WO2020048406A1

WO2020048406A1 - Valve and pump

Info

Publication number: WO2020048406A1
Application number: PCT/CN2019/103872
Authority: WO
Inventors: 韩杰; 李来志
Original assignee: 沈阳耐蚀合金泵股份有限公司
Priority date: 2018-09-04
Filing date: 2019-08-30
Publication date: 2020-03-12
Also published as: CN110454611A; CN108953753A

Abstract

A valve and a pump (1000, 2011), wherein the valve comprises: a housing assembly (10) provided with a fluid channel (111) thereon; an opening/closing assembly (20) capable of at least partially extending into or retracting from the fluid channel (111) so as to control the flow rate of the fluid channel (111); an execution assembly (30) connected to the opening/closing assembly (20) so as to control the degree of extension or retraction of the opening/closing assembly (20); a blocking assembly (40) comprising at least one deformable body (41, 42, 1410), the deformable body (41, 42, 1410) being disposed between the opening/closing assembly (20) and the housing assembly (10) to prevent leakage of the fluid medium inside the fluid channel (111), effectively addressing the issue of potential medium leakage in the prior art due to low sealing performance of a valve.

Description

Valve, pump

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on September 4, 2018, with application number 201811027325.3, and application name "valve", the entire contents of which are incorporated herein by reference.

Technical field

The invention relates to the technical field of machinery manufacturing, and in particular to a valve and a pump.

Background technique

With the development of society, the application of the valve is very extensive, and the conveying medium is becoming more and more complicated. While we require reducing wear, we also require higher sealing performance of the valve.

However, the traditional valve has a lower sealing performance and cannot meet the sealing requirements. When the sealing performance is not good, there will be a problem of medium leakage, and a lot of economic losses will occur. Even when the medium is toxic or corrosive, the leakage of toxic or corrosive substances may endanger people's lives.

Summary of the Invention

The main purpose of the present invention is to provide a valve and a pump, so as to solve the problem that the valve in the prior art has a low sealing performance and is prone to media leakage.

In order to achieve the above object, a valve is provided according to the present invention, which includes: a housing assembly provided with a fluid channel; an opening-closing component, the opening-closing component extending at least partially telescopically into the fluid channel to control The flow of the fluid channel; the execution component, which is connected to the opening and closing component to control the amount of expansion and contraction of the opening and closing component; the shielding component, the shielding component includes at least one deformed body, the deformed body is disposed between the opening and closing component and the shell component, To prevent leakage of fluid medium in the fluid channel.

Further, the first end of the deformed body is hermetically connected to the opening and closing component, and the second end of the deformed body is hermetically connected to the housing component to prevent leakage of the fluid medium.

Further, the housing assembly includes a valve body, and the fluid passage is disposed in the valve body. An opening and closing passage communicating with the fluid passage is provided in the middle of the valve body, and the opening and closing assembly is at least partially disposed in the opening and closing passage.

Further, the opening and closing assembly includes: a valve stem, the first end of the valve stem is connected to the execution assembly, and the execution assembly drives the valve stem near or away from the fluid channel; the valve disc, the valve disc is connected to the second end of the valve stem, and the valve disc may be Telescopically extends into the fluid channel to control the flow rate of the fluid channel; a sealing structure is provided in the fluid channel to cooperate with the valve flap.

Further, the middle part of the fluid is provided with an opening and closing port that cooperates with the valve flap, the opening and closing port is arranged at an angle with the axis of the fluid channel, and the sealing structure is a first sealing seat disposed inside the opening and closing port.

Further, the sealing structure is a groove provided on the inner wall of the valve body and cooperating with the valve disc and a bush provided on the groove and adapted to the valve disc to improve the sealing performance of the valve disc.

Further, the housing assembly further includes a valve cover, the valve cover is disposed at an end of the opening and closing channel away from the fluid channel; when two deformed bodies are provided, the first deformed body and the second deformed body are included, and the first deformed body and the second deformed body are provided. The bodies are respectively disposed on both sides of the valve cover.

Further, the housing assembly further includes an end cover. The end cover is disposed on a side of the valve body away from the valve cover, and the end cover is provided with a groove matched with the opening and closing component.

Further, the connection between the valve body and the valve cover is a first connection port, and the connection between the valve body and the end cover is a second connection port. The structure of the first connection port and the second connection port is the same, so that Port and the second connection port to modify the valve body of the valve.

Further, the two ends of the first deformed body are respectively sealed, the first end of the first deformed body is provided with a first flange, the valve disc is provided with a circular recess matching the first flange, and the valve disc is provided with a A pressure plate fitted with a circular recess, the pressure plate is fixed on the valve flap by a first fastener to clamp the first flange; the second end of the first deformed body is provided with a second flange, and the second flange is provided at Between the valve body and the valve cover, the valve body and the valve cover are fixed and clamped by the second flange so that the fluid medium cannot contact the valve stem.

Further, the housing assembly further includes a bracket, the first end of the bracket is connected to the valve cover, the second end of the bracket is connected to the actuator, the two ends of the second deformed body are respectively sealed, and the third end of the second deformed body is provided with a third A flange, a third flange is provided between the valve cover and the bracket, and the valve cover and the bracket are fixed and clamped by the third fastener; the second end of the second deformed body is provided with a fourth flange, An inner hole is provided in the fourth flange, an embedded part is provided in the inner hole, a tapered hole ring is provided on the valve stem, and a seal is provided between the embedded part and the tapered hole ring. The embedded part and the tapered hole ring pass through. A fourth fastener secures and clamps the gasket.

Further, the two ends of the first deformed body are respectively sealed, and the first end of the first deformed body is provided with a first flange, an inner hole is provided in the first flange, an embedded part is provided in the inner hole, and the valve rod is close to the valve. A split plate is provided at the position of the flap. The split plate is provided with a square hole and the valve stem is relatively static. The tapered hole ring is fixed and clamped by a fifth fastener; the second end of the first deformed body is provided with a second flange, the second flange is provided between the valve body and the valve cover, and the valve body and the valve cover The second flange is fixed and clamped by the sixth fastener, so that the fluid medium cannot contact a part of the valve stem on the side of the split plate away from the valve body.

Further, a first end of the first deformed body is sealingly connected to the valve stem, and a second end of the first deformed body is sealedly connected between the valve body and the valve cover.

Further, the housing assembly further includes a bracket, the bracket is connected to the valve cover, and is located on a side of the valve cover away from the valve body; the first end of the second deformed body is sealingly connected to the valve stem, and the second end of the second deformed body Sealed between bracket and bonnet.

Further, the valve stem is provided with a mounting groove, and the first end of the first deformed body and / or the second deformed body is installed at the position of the mounting groove through an elastic seal.

Further, a sealing ring is provided at a junction between the valve cover and the valve stem.

Further, the execution component is provided as an electric actuator, a hydraulic cylinder, an air cylinder, or a manual control mechanism.

Further, the deformed body is made of a rubber material or a deformable metal structure.

Further, the shielding component is provided as two deformation bodies, the deformation body near the execution component is a rubber elastic body or a bellows component, and the deformation body far from the execution component is a bellows component.

Further, the opening-closing component includes a valve stem and a valve flap, a first end of the rubber elastic body is sealingly connected with the housing component, and a second end of the rubber elastic body is sealingly connected with the valve rod. The first end of the bellows assembly is hermetically connected to the housing assembly, and the second end of the bellows assembly is hermetically connected to the valve stem.

Further, the bellows assembly includes: a bellows; an inner support sleeve, the inner support sleeve is disposed between the bellows and the valve stem; an isolation disk, the isolation disk is disposed between the inner support sleeve and the shell component, and the isolation disk and the inner support The sleeve and the shell component are sealed and connected respectively; the first end of the bellows is connected to the isolation disc, and the second end of the bellows is sealedly connected to the valve stem.

Further, the inner side of the inner support sleeve is sealedly connected with the valve stem, and a shielding cavity is formed between the bellows and the valve stem.

Further, at least one water-cooled sealed cavity is provided between the rubber elastic body and the bellows assembly, and the water-cooled sealed cavity communicates with a water-cooled circuit.

Further, at least two sets of static seals are provided on both sides of the water-cooled sealed cavity, and at least one dynamic seal is provided in the water-cooled sealed cavity.

The invention also provides a valve. The valve is a butterfly valve, which includes: a housing component, a fluid channel is provided on the housing component; an opening and closing component, the opening and closing component is at least partially in the fluid channel, and a part of The closing area of the closing component can be adjusted to control the flow of the fluid channel; the execution component, which is connected to the opening and closing component, to control the closing area of the opening and closing component; the shielding component, the shielding component includes at least one deformed body, and the deformed body is arranged at Between the opening and closing assembly and the housing assembly to prevent leakage of the fluid medium in the fluid passage.

Further, the flange of the first end of the deformed body is clamped by the bearing seat and the bracket of the butterfly valve to form a static seal; the second end of the deformed body is connected to the opening and closing component and forms a static seal.

Further, the opening-closing assembly includes an upper valve stem, and the second end of the deformed body is fixed to the upper valve stem through a third fixing component; the second end of the deformed body has flanges, and at least one end surface of the upper and lower ends of the flange A raised annular structure is provided on the ring structure, and at least one of the annular structures is matched with a groove-like structure provided on the third fixing component to form at least one sealing weir.

Further, the opening and closing assembly includes an upper valve stem, a lower valve stem, and a valve disc. The lower valve stem is provided with flanges, and thrust bearings are provided at the upper and lower ends of the flange, so as to reduce the Friction.

Further, the opening and closing assembly includes an upper valve stem, a lower valve stem, and a valve disc, and the lower valve stem passes through the valve body; an upper shaft sleeve and a lower shaft sleeve are provided between the valve body and the lower valve stem; An upper shaft sleeve installation groove is provided on one side, and the upper shaft sleeve is installed in the upper shaft sleeve installation groove through a mounting component; a side of the valve body remote from the actuator is provided with a lower shaft sleeve installation groove, and the lower shaft sleeve is installed on the lower shaft through an end cover. Cover the installation slot.

The invention also provides a valve. The valve is a ball valve, which comprises: a housing component, a fluid channel is provided on the housing component; an opening and closing component, the opening and closing component is at least partially in the fluid channel, and a part of the fluid channel is opened in the fluid channel. The closing area of the closing component can be adjusted to control the flow of the fluid channel; the execution component, which is connected to the opening and closing component, to control the closing area of the opening and closing component; the shielding component, the shielding component includes at least one deformed body, and the deformed body is arranged at Between the opening and closing assembly and the housing assembly to prevent leakage of the fluid medium in the fluid passage.

Further, the flange at the first end of the deformed body is clamped by the end cap of the ball valve and the limit seat to form a static seal; the second end of the deformed body is connected to the opening and closing component and forms a static seal.

The invention also provides a valve. The valve is the valve described above, and a flap door is arranged on the pipeline where the valve is located.

Further, the shutter includes a driving structure; a lifter, the lifter is connected to the driving structure; a valve body, the valve body is a hollow structure, one side of the valve body is connected to the lifter, and a fluid passage is provided inside the valve body; a sleeve The sleeve and the sleeve are detachably connected to the output end of the lift, and a connecting rope is provided on the side of the sleeve away from the lift; the valve flap is arranged on the side of the fluid passage, and the valve flap is close to the lift One side is rotatably connected to the valve body, and the valve flap has a first position to block the fluid passage and a second position to open the fluid passage; a shielding component, the shielding component is disposed between the sleeve and the valve body; wherein the connecting rope and the valve flap Connected to switch the position of the disc by a lift.

The invention also provides a pump, which includes a shielding component, and the shielding component is the shielding component described above.

By applying the technical solution of the present invention, the arrangement of the shielding component between the opening and closing component and the housing component can shield the fluid medium in the fluid channel while the opening and closing component controls the flow rate of the fluid channel to prevent the fluid medium in the fluid channel. It flows out from the gap between the opening and closing assembly and the housing assembly, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect of the fluid medium with the opening and closing of the valve during the work of the opening and closing assembly. The technical solution of the present invention effectively solves the problem that the valve in the prior art has low sealing performance and is prone to media leakage.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 is a schematic structural diagram of a first embodiment of a valve according to the present invention; FIG.

FIG. 2 shows an enlarged view of the shielding assembly at A in FIG. 1; FIG.

3 is a schematic structural diagram of a second embodiment of a valve according to the present invention;

4 is a schematic structural diagram of a third embodiment of a valve according to the present invention;

5 is a schematic structural diagram of a fourth embodiment of a valve according to the present invention;

6 is a schematic structural diagram of a fifth embodiment of a valve according to the present invention;

FIG. 7 is a schematic structural diagram of a sixth embodiment of a valve according to the present invention when it is opened; FIG.

FIG. 8 shows an enlarged view at B in FIG. 7;

9 shows a schematic structural diagram of a valve according to a sixth embodiment of the present invention when closed;

10 is a schematic structural diagram of a valve according to a seventh embodiment of the present invention;

FIG. 11 shows an enlarged view of the first fixing component and the deformed body in the valve according to the seventh embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a valve according to an eighth embodiment of the present invention; FIG.

13 is a schematic structural diagram of a valve according to a ninth embodiment of the present invention;

14 shows an enlarged view of a valve stem flange and a thrust bearing in Embodiment 9 of the present invention;

15 shows an enlarged view of a fitting structure of an upper valve stem and a lower valve stem in a ninth embodiment of the present invention;

16 shows an enlarged view of a modified body of the valve in the ninth embodiment of the present invention after installation;

FIG. 17 is a schematic structural diagram of a valve in Embodiment 10 of the present invention; FIG.

18 is a schematic structural diagram of a valve in Embodiment 11 of the present invention;

FIG. 19 shows an enlarged view of a shield assembly and a valve stem in a valve according to an eleventh embodiment of the present invention; FIG.

20 shows an enlarged view of a bellows assembly in a valve according to an eleventh embodiment of the present invention when it is connected to a valve stem;

21 is a schematic structural diagram of a valve in Embodiment 12 of the present invention;

22 to 27 are schematic structural diagrams of various sealing forms of a valve disc and a valve body in the present invention;

FIG. 28 is a schematic structural diagram of a butterfly valve in a thirteenth embodiment of the present invention; FIG.

FIG. 29 is a schematic structural diagram of a ball valve in a fourteenth embodiment of the present invention; FIG.

30 to 32 are schematic structural diagrams of a plunger pump according to a fifteenth embodiment of the present invention;

FIG. 33 is a schematic structural diagram of a shot gate in Embodiment 16 of the present invention.

The above drawings include the following reference signs:

10. Housing components; 11. Valve body; 111. Fluid passage; 12. Valve cover; 13. Bracket; 14. End cover; 15. Bearing seat; 16. Limit seat; 20. Opening and closing assembly; 21. Valve Rod; 211, guide block; 212, mounting groove; 22, valve disc; 23, valve seat; 24, spherical opening and closing member; 30, executive component; 40, shielding component; 41, first deformed body; 411, ring Structure; 42, second deformed body; 43, embedded parts; 44, cone ring; 45, gasket; 50, sealing structure; 51, first sealing seat; 52, groove; 53, bushing; 54, Second seal seat; 60, bearing; 70, pressure relief hole; 80, elastic seal; 90, seal ring; 100, first fixing component; 101, first fixing plate; 102, second fixing plate; 103, groove Structure; 200, second fixing component; 201, third fixing plate; 202, fourth fixing plate; 300, third fixing component; 301, fifth fixing plate; 302, sixth fixing plate; 400, upper valve stem 401, lower stem; 402, stem flange; 403, thrust bearing; 404, upper bushing; 405, packing assembly; 406, lower bushing; 407, split ring; 500, mounting assembly; 600 Triangular gaskets; 700, spiral grooves; 701, top wire; 800, bellows components; 801, bellows; 802, inner support sleeves; 803, isolation discs; 900, water-cooled shielding cavity; 1000, plunger pumps; 1100, Housing; 1200, input shaft; 1201, crankshaft; 1202, connecting rod mechanism; 1300, piston rod; 1301, cylinder liner; 1410, deformed body; 1411, first flange; 1412, second flange; 1420, live Flange; 1430, fixed structure; 1500, inlet pipe; 2000, flap door; 2001, reducer; 2002, lift; 2003, sleeve; 2005, valve cover; 2006, valve body; 2007, pulley; 2008 , Connecting rope; 2009, valve disc; 2010, cleaning interface; 2011, centrifugal pump.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

Example one,

As shown in FIG. 1 and FIG. 2, a valve in Embodiment 1 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

By applying the technical solution of the first embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow rate of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the first embodiment effectively solves the problem that the valve in the prior art has a low sealing performance and is prone to media leakage.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the first end of the deformed body is hermetically connected to the opening and closing assembly 20, and the second end of the deformed body is hermetically connected to the housing assembly 10 to prevent a fluid medium. Give way. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is disposed in the valve body 11, and a middle portion of the valve body 11 is provided with an opening communicating with the fluid passage 111. Closed passage, the opening and closing assembly 20 is at least partially disposed in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the opening and closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the opening-closing assembly 20 is disposed at an angle with the axis of the fluid passage 111, and an opening-closing port that is matched with the valve flap 22 is provided in the middle of the fluid. The arrangement of the opening and closing port can better cooperate with the valve flap 22.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the opening and closing port is disposed at an angle with the axis of the fluid channel 111, and the sealing structure is a first sealing seat 51 that is disposed inside the opening and closing port. The above structure can reduce the resistance of the opening-closing component 20 to the fluid medium, thereby reducing the impact of the fluid medium on the shielding component 40 and improving the stability of the shielding component 40. The arrangement of the first sealing seat 51 can improve the sealing performance between the opening and closing port and the valve flap 22.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the housing assembly 10 further includes a valve cover 12, and the valve cover 12 is disposed at an end of the opening and closing channel away from the fluid channel 111. When two deformed bodies are provided, the first deformed body 41 and the second deformed body 42 are included. The first deformed body 41 and the second deformed body 42 are respectively disposed on both sides of the valve cover 12. The arrangement of the valve cover 12 in the above structure can make the opening-closing assembly 20 more stable and reliable on the one hand, and on the other hand, the deformed body can be installed through the valve cover 12. The interaction between the valve cover 12 and the valve body 11 can improve the sealing performance of the deformed body to achieve a better shielding effect. The arrangement of the first deformed body 41 and the second deformed body 42 can form a double-layer shielding effect to achieve a better shielding effect. More deformation bodies can be provided, and two is the preferred solution of this embodiment.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the two ends of the first deformed body 41 are respectively sealed, the first end of the first deformed body 41 is provided with a first flange, and the valve flap 22 is provided with The circular recessed platform matched with the first flange, the valve plate 22 is provided with a pressure plate matched with the circular recessed platform, and the pressure plate is fixed on the valve plate 22 by a first fastener to clamp the first flange. The second end of the first deformed body 41 is provided with a second flange. The second flange is provided between the valve body 11 and the valve cover 12. The valve body 11 and the valve cover 12 are fixed and clamped by the second fastener. Two flanges so that the fluid medium cannot contact the valve stem 21. The above structure can prevent the fluid medium from completely contacting the valve stem 21 through the arrangement of the first deformed body 41, and also prevents the fluid medium from leaking to the outside through the through hole of the valve cover 12, thereby ensuring the safety of the valve. The arrangement of the first deformed body 41 may form a first protective barrier. The valve stem 21 of the above structure can be made of general materials to reduce processing costs.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the housing assembly 10 further includes a bracket 13, a first end of the bracket 13 is connected to the valve cover 12, and a second end of the bracket 13 is connected to the execution component 30. The two ends of the second deformable body 42 are sealed respectively. The first end of the second deformable body 42 is provided with a third flange. The third flange is provided between the valve cover 12 and the bracket 13. The valve cover 12 and the bracket 13 pass through the third The fastener secures and clamps the third flange. A fourth flange is provided at the second end of the second deforming body 42. An inner hole is provided in the fourth flange. An embedded piece 43 is provided in the inside hole. A tapered ring ring 44 is provided on the valve stem 21. A seal 45 is provided between 43 and the tapered ring 44. The embedded piece 43 and the tapered ring 44 are fixed and clamped by a fourth fastener. The arrangement of the second deformed body 42 in the above structure can further improve the shielding effect of the valve. Even if the first deformed body 41 is accidentally damaged, a second protective barrier can be formed to ensure that the fluid medium will not leak through the valve. The aforementioned gasket 45 is preferably a triangular gasket 45 or an “O” -shaped gasket 45, so that the second deformed body 42 and the valve stem 21 have a better sealing effect.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, a through hole is opened in the valve cover 12, the valve rod 21 passes through the through hole, and a second sealing seat is provided between the valve rod 21 and the valve cover 12. 54 to prevent the fluid medium from leaking from the gap between the valve stem 21 and the valve cover 12. The arrangement of the second sealing seat 54 can prevent the fluid medium from leaking from the gap between the valve stem 21 and the valve cover 12, so that a third protective barrier can be formed. The arrangement of the first protective barrier, the second protective barrier and the third protective barrier can shield the fluid medium to the greatest extent.

It is worth noting that one or two of the first protective barrier, the second protective barrier, and the third protective barrier can be set according to the actual situation, or a plurality of the same protective barrier can be set, or a mixture of random types and random numbers can be set. .

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the valve stem 21 is provided with a guide block 211 slidingly connected to the bracket 13, and the bracket 13 and the guide block 211 are provided with a matching chute and Slide rail to prevent the valve stem 21 from rotating. The above structure can make the movement of the valve rod 21 more stable and reliable.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the parts of the housing assembly 10 and the opening and closing assembly 20 that are in contact with the fluid medium are made of stainless steel or special alloy. The above structure can replace the components that do not contact the medium with ordinary materials, which can save valuable materials, reduce costs, and have a broad market prospect. The above structure is the preferred solution of this embodiment, and the metal part of the entire valve can also be made of stainless steel or special alloy according to requirements.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, the execution component 30 is configured as an electric actuator, a hydraulic cylinder, an air cylinder, or a manual control mechanism. The execution component 30 can be matched according to the needs of actual working conditions. This embodiment has a margin electric actuator.

As shown in FIG. 1 and FIG. 2, in the technical solution of the first embodiment, a stem nut is provided on the execution component 30, the stem 30 is driven by the execution component 30 to rotate, the stem nut is threadedly connected to the stem 21, and the stem nut The outer circle is provided with a bearing 60 adapted to the stem nut. The execution component 30 in the above structure is an electric actuator, and the arrangement of the valve stem nut can drive the valve stem 21 to expand and contract in a rotating manner. The bearing 60 is set as a thrust ball bearing to better cooperate with the stem nut. The chute and slide rail of the stem 21 on the bracket 13 and the guide block 211 can only move in a straight line, so under the action of the electric actuator The valve stem 21 can only perform telescopic movement, and then drive the valve flap 22 to open and close the valve.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the deformed body is made of a rubber material or a deformable metal structure. Specifically, the rubber material may be butyl rubber or natural rubber, and the variable metal structure may be provided as a corrugated tube or other deformable structure made of stainless steel or a special alloy.

As shown in FIGS. 1 and 2, in the technical solution of the first embodiment, the deformed body has at least one layer. In the above structure, the deformed body can be formed by stacking multiple layers of materials, so that the advantages of each material can be combined and the shielding effect can be better. In addition, the material selection range of the deformed body can be expanded, for example, a corrugated tube made of ordinary material plated with at least one layer of rubber material.

Example two,

As shown in FIG. 3, a valve in Embodiment 2 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

Applying the technical solution of the second embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the second embodiment effectively solves the problem that the sealing performance of the valve in the prior art is low and the medium is easy to leak.

As shown in FIG. 3, in the technical solution of the second embodiment, the first end of the deformed body is tightly connected to the opening and closing component 20, and the second end of the deformed body is tightly connected to the housing component 10 to prevent leakage of the fluid medium. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 3, in the technical solution of the second embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is provided in the valve body 11, and an opening and closing passage communicating with the fluid passage 111 is provided in the middle of the valve body 11. The opening and closing assembly 20 is disposed at least partially in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIG. 3, in the technical solution of the second embodiment, the opening-closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 3, in the technical solution of the second embodiment, the housing assembly 10 further includes a valve cover 12, and the valve cover 12 is disposed at an end of the opening and closing channel away from the fluid channel 111. When two deformed bodies are provided, the first deformed body 41 and the second deformed body 42 are included. The first deformed body 41 and the second deformed body 42 are respectively disposed on both sides of the valve cover 12. The arrangement of the valve cover 12 in the above structure can make the opening-closing assembly 20 more stable and reliable on the one hand, and on the other hand, the deformed body can be installed through the valve cover 12. The interaction between the valve cover 12 and the valve body 11 can improve the sealing performance of the deformed body to achieve a better shielding effect. The arrangement of the first deformed body 41 and the second deformed body 42 can form a double-layer shielding effect to achieve a better shielding effect. More deformation bodies can be provided, and two is the preferred solution of this embodiment.

As shown in FIG. 3, in the technical solution of the second embodiment, the two ends of the first deformed body 41 are respectively sealed, the first end of the first deformed body 41 is provided with a first flange, and the first flange is provided with an inner hole. An embedded piece 43 is provided in the inner hole, a valve plate 21 is provided with a split plate at a position close to the valve flap 22, a square hole is provided with a square hole and the valve rod 21 is relatively stationary, and a tapered ring ring 44 is connected to the split plate. A seal 45 is provided between the embedded piece 43 and the tapered ring 44. The embedded piece 43 and the tapered ring 44 are fixed and clamped by a fifth fastener. The second end of the first deformed body 41 is provided with a second flange. The second flange is provided between the valve body 11 and the valve cover 12. The valve body 11 and the valve cover 12 are fixed and clamped by a sixth fastener. Two flanges, so that the fluid medium cannot contact a part of the valve stem 21 on the side of the split plate away from the valve body 11. In the above structure, the fluid medium can only contact part of the valve stem 21 through the arrangement of the first deformed body 41, and the fluid medium cannot leak to the outside through the through hole of the valve cover 12, thereby ensuring the safety of the valve. The arrangement of the first deformed body 41 may form a first protective barrier. The valve stem 21 of the above structure can be made of general material without contacting the fluid medium, so as to reduce the processing cost.

As shown in FIG. 3, in the technical solution of the second embodiment, the housing assembly 10 further includes a bracket 13, a first end of the bracket 13 is connected to the valve cover 12, and a second end of the bracket 13 is connected to the execution component 30. The two ends of the second deformable body 42 are sealed respectively. The first end of the second deformable body 42 is provided with a third flange. The third flange is provided between the valve cover 12 and the bracket 13. The valve cover 12 and the bracket 13 pass through the third The fastener secures and clamps the third flange. A fourth flange is provided at the second end of the second deforming body 42. An inner hole is provided in the fourth flange. An embedded piece 43 is provided in the inside hole. A tapered ring ring 44 is provided on the valve stem 21. A seal 45 is provided between 43 and the tapered ring 44. The embedded piece 43 and the tapered ring 44 are fixed and clamped by a fourth fastener. The arrangement of the second deformed body 42 in the above structure can further improve the shielding effect of the valve. Even if the first deformed body 41 is accidentally damaged, a second protective barrier can be formed to ensure that the fluid medium will not leak through the valve. The aforementioned gasket 45 is preferably a triangular gasket 45 or an “O” -shaped gasket 45, so that the second deformed body 42 and the valve stem 21 have a better sealing effect.

As shown in FIG. 3, in the technical solution of the second embodiment, the valve cover 12 is provided with a through hole, the valve rod 21 passes through the through hole, and a second sealing seat 54 is provided between the valve rod 21 and the valve cover 12. The fluid medium is prevented from leaking from the gap between the valve stem 21 and the valve cover 12. The arrangement of the second sealing seat 54 can prevent the fluid medium from leaking from the gap between the valve stem 21 and the valve cover 12, so that a third protective barrier can be formed. The arrangement of the first protective barrier, the second protective barrier and the third protective barrier can shield the fluid medium to the greatest extent.

It is worth noting that one or two of the first protective barrier, the second protective barrier, and the third protective barrier can be set according to the actual situation, or a plurality of the same protective barrier can be set, or a mixture of random types and random numbers . As shown in FIG. 3, in the technical solution of the second embodiment, the parts of the casing assembly 10 and the opening and closing assembly 20 that are in contact with the fluid medium are made of stainless steel or special alloy. The above structure can replace the components that do not contact the medium with ordinary materials, which can save valuable materials, reduce costs, and have a broad market prospect. The above structure is the preferred solution of this embodiment, and the metal part of the entire valve can also be made of stainless steel or special alloy according to requirements.

As shown in FIG. 3, in the technical solution of the second embodiment, the execution component 30 is configured as an electric actuator, a hydraulic cylinder, a cylinder, or a manual control mechanism. The execution component 30 can be matched according to the needs of actual working conditions. This embodiment has a margin electric actuator.

As shown in FIG. 3, in the technical solution of the second embodiment, a stem nut is provided on the execution component 30. The execution component 30 drives the stem nut to rotate, the stem nut is threadedly connected to the stem 21, and the stem nut is provided in an outer circle. There is a bearing 60 adapted to the stem nut. The execution component 30 in the above structure is an electric actuator, and the arrangement of the valve stem nut can drive the valve stem 21 to expand and contract in a rotating manner. The bearing 60 is set as a thrust ball bearing to better cooperate with the stem nut. The chute and slide rail of the stem 21 on the bracket 13 and the guide block 211 can only move in a straight line, so under the action of the electric actuator The valve stem 21 can only perform telescopic movement, and then drive the valve flap 22 to open and close the valve.

As shown in FIG. 3, in the technical solution of the second embodiment, the valve flap 22 is provided with a pressure relief hole 70 to balance the pressure in the fluid passage 111. The arrangement of the pressure relief hole 70 in the above structure can make the valve flap 22 more stable and reliable when controlling the flow rate of the fluid passage 111.

As shown in FIG. 3, in the technical solution of the second embodiment, the actuator assembly 30 drives the valve stem 21 to move along the axis of the valve stem 21. Straight grooves are provided on both sides of the valve 22, and ribs matching the straight grooves are provided inside the valve body 11 to make the valve flap 22 and the valve body 11 slide relative to each other. The relative sliding of the valve flap 22 and the valve body 11 realizes the valve opening and closing action. The above structure can realize the opening and closing of the valve by sliding the valve flap 22 relative to the valve body 11, and the formation of the sealing pair can have better sealing performance when the valve is closed.

As shown in FIG. 3, in the technical solution of the second embodiment, the deformed body is made of a rubber material or a deformable metal structure. Specifically, the rubber material may be butyl rubber or natural rubber, and the variable metal structure may be provided as a corrugated tube or other deformable structure made of stainless steel or a special alloy.

As shown in FIG. 3, in the technical solution of the second embodiment, the deformed body has at least one layer. In the above structure, the deformed body can be formed by stacking multiple layers of materials, so that the advantages of each material can be combined and the shielding effect can be better. In addition, the material selection range of the deformed body can be expanded, for example, a corrugated tube made of ordinary material plated with at least one layer of rubber material.

Example three,

As shown in FIG. 4, a valve in Embodiment 3 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

By applying the technical solution of the third embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the third embodiment effectively solves the problem that the valve in the prior art has a low sealing performance and is prone to media leakage.

As shown in FIG. 4, in the technical solution of the third embodiment, the first end of the deformed body is hermetically connected to the opening-closing assembly 20, and the second end of the deformed body is hermetically connected to the housing assembly 10 to prevent leakage of the fluid medium. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 4, in the technical solution of the third embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is provided in the valve body 11, and an opening and closing passage communicating with the fluid passage 111 is provided in the middle of the valve body 11. The opening and closing assembly 20 is disposed at least partially in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIG. 4, in the technical solution of the third embodiment, the opening-closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 3, in the technical solution of the second embodiment, the sealing structure is a groove 52 provided on the inner wall of the valve body 11 and cooperating with the valve disc 22 and a groove 52 provided on the groove 52 and adapted to the valve disc 22 The bushing 53 is used to improve the sealing performance of the valve flap 22. The arrangement of the bushing 53 can improve the sealing between the groove 52 and the valve flap 22. The groove 52 is preferably a complete circular groove, and the bushing 53 is adapted to the groove 52. Further, the bushing 53 may be a metal ring with a certain hardness and welded to the valve body 11, and the center angle of the bushing 53 and the fluid passage 111 is close to 5 °.

It is worth noting that the valve flap 22 and the groove 52 in this embodiment are slidingly connected, and the valve is opened and closed by sliding in and out of the valve flap 22. The material of the bushing 53 may be one of engineering plastics such as polytetrafluoroethylene, para-polystyrene, carbon fiber, PTA, PFA, etc .; the bushing 53 has a certain angle and is close to 2 °. Preferably, the valve flap 22 has a certain angle and is close to 2 °. A pressure relief hole 70 is provided in the middle of the valve flap 22 to balance the pressure in the cavity of the valve body 11 and communicate with the inlet of the fluid passage 111.

As shown in FIG. 4, in the technical solution of the third embodiment, the two ends of the deformed body are respectively sealed, and the first end of the deformed body is provided with a first flange, and an inner hole is provided in the first flange and an inner hole is provided. Embedded parts 43, the valve stem 21 is provided with a split plate near the valve flap 22. The split plate is provided with a square hole that is relatively stationary with the valve stem 21. A conical ring 44 is connected to the split plate. A sealing gasket 45 is provided between the tapered hole rings 44, and the embedded piece 43 and the tapered ring 44 are fixed and clamped by a fifth fastener. The second end of the deformed body is provided with a second flange. The second flange is provided between the valve body 11 and the execution assembly 30. The valve body 11 and the execution assembly 30 are fixed and clamped by the sixth fastener. In order to prevent the fluid medium from contacting a part of the valve stem 21 on the side of the half-plate away from the valve body 11.

As shown in FIG. 4, in the technical solution of the third embodiment, the parts of the housing assembly 10 and the opening and closing assembly 20 that are in contact with the fluid medium are made of stainless steel or a special alloy. The above structure can replace the components that do not contact the medium with ordinary materials, which can save valuable materials, reduce costs, and have a broad market prospect. The above structure is the preferred solution of this embodiment, and the metal part of the entire valve can also be made of stainless steel or special alloy according to requirements.

As shown in FIG. 4, in the technical solution of the third embodiment, the execution component 30 is configured as an electric actuator, a hydraulic cylinder, a cylinder, or a manual control mechanism. This embodiment is preferably a hydraulic cylinder, an air cylinder, or a manual control mechanism. When a hydraulic cylinder or an air cylinder is used, the telescopic rod can be directly used as the valve rod 21. The manual control mechanism can be set as a link mechanism, or it can be ratcheted to improve the effect of automatic sealing.

As shown in FIG. 4, in the technical solution of the third embodiment, the valve flap 22 is provided with a pressure relief hole 70 to balance the pressure in the fluid passage 111. The arrangement of the pressure relief hole 70 in the above structure can make the valve flap 22 more stable and reliable when controlling the flow rate of the fluid passage 111.

As shown in FIG. 4, in the technical solution of the third embodiment, the actuator assembly 30 drives the valve stem 21 to move along the axis of the valve stem 21, and an end of the valve stem 21 away from the actuator assembly 30 has an inverted trapezoidal shape that cooperates with the valve flap 22. Straight grooves are provided on both sides of the valve 22, and ribs matching the straight grooves are provided inside the valve body 11 to make the valve flap 22 and the valve body 11 slide relative to each other. The relative sliding of the valve flap 22 and the valve body 11 realizes the valve opening and closing action. The above structure can realize the opening and closing of the valve by sliding the valve flap 22 relative to the valve body 11, and the formation of the sealing pair can have better sealing performance when the valve is closed.

As shown in FIG. 4, in the technical solution of the third embodiment, the deformed body is made of a rubber material or a deformable metal structure. Specifically, the rubber material may be butyl rubber or natural rubber, and the variable metal structure may be provided as a corrugated tube or other deformable structure made of stainless steel or a special alloy.

As shown in FIG. 4, in the technical solution of the third embodiment, the deformed body has at least one layer. In the above structure, the deformed body can be formed by stacking multiple layers of materials, so that the advantages of each material can be combined and the shielding effect can be better. In addition, the material selection range of the deformed body can be expanded, for example, a corrugated tube made of ordinary material plated with at least one layer of rubber material.

Embodiment 4

As shown in FIG. 5, a valve in Embodiment 4 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

By applying the technical solution of the fourth embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the fourth embodiment effectively solves the problem that the sealing performance of the valve in the prior art is low and the medium is easy to leak.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the first end of the deformed body is hermetically connected to the opening-closing assembly 20, and the second end of the deformed body is hermetically connected to the housing assembly 10 to prevent leakage of the fluid medium. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is provided in the valve body 11, and an opening and closing passage communicating with the fluid passage 111 is provided in the middle of the valve body 11. The opening and closing assembly 20 is disposed at least partially in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the opening and closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the opening-closing assembly 20 is disposed at an angle with the axis of the fluid channel 111, and an opening-closing port that is matched with the valve flap 22 is provided in the middle of the fluid. The arrangement of the opening and closing port can better cooperate with the valve flap 22. Further, the valve flap 22 may be made of a flexible and deformable material, so as to change the flow curve of the fluid medium by changing the shape, such as equal percentage, linearity, fast opening, and the like.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the opening-closing port is disposed at an angle with the axis of the fluid channel 111, and the sealing structure is a first sealing seat 51 disposed inside the opening-closing port. The above structure can reduce the resistance of the opening-closing component 20 to the fluid medium, thereby reducing the impact of the fluid medium on the shielding component 40 and improving the stability of the shielding component 40. The arrangement of the first sealing seat 51 can improve the sealing performance between the opening and closing port and the valve flap 22. The opening and closing port of this embodiment is preferably parallel to the axis of the fluid passage 111.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the two ends of the deformed body are respectively sealed, and the first end of the deformed body is provided with a first flange. The first flange is provided with an inner hole and the inner hole is provided with the inner hole. Embedded parts 43, the valve stem 21 is provided with a split plate near the valve flap 22. The split plate is provided with a square hole that is relatively stationary with the valve stem 21. A conical ring 44 is connected to the split plate. A sealing gasket 45 is provided between the tapered hole rings 44, and the embedded piece 43 and the tapered ring 44 are fixed and clamped by a fifth fastener. The second end of the deformed body is provided with a second flange. The second flange is provided between the valve body 11 and the execution assembly 30. The valve body 11 and the execution assembly 30 are fixed and clamped by the sixth fastener. In order to prevent the fluid medium from contacting a part of the valve stem 21 on the side of the half-plate away from the valve body 11.

As shown in FIG. 5, in the technical solution of the fourth embodiment, parts of the casing assembly 10 and the opening-closing assembly 20 that are in contact with the fluid medium are made of stainless steel or a special alloy. The above structure can replace the components that do not contact the medium with ordinary materials, which can save valuable materials, reduce costs, and have a broad market prospect. The above structure is the preferred solution of this embodiment, and the metal part of the entire valve can also be made of stainless steel or special alloy according to requirements.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the execution component 30 is configured as an electric actuator, a hydraulic cylinder, an air cylinder, or a manual control mechanism. This embodiment is preferably a hydraulic cylinder, an air cylinder, or a manual control mechanism. When a hydraulic cylinder or an air cylinder is used, the telescopic rod can be directly used as the valve rod 21. The manual control mechanism can be set as a link mechanism, or it can be ratcheted to improve the effect of automatic sealing.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the deformed body is made of a rubber material or a deformable metal structure. Specifically, the rubber material may be butyl rubber or natural rubber, and the variable metal structure may be provided as a corrugated tube or other deformable structure made of stainless steel or a special alloy.

As shown in FIG. 5, in the technical solution of the fourth embodiment, the deformed body has at least one layer. In the above structure, the deformed body can be formed by stacking multiple layers of materials, so that the advantages of each material can be combined and the shielding effect can be better. In addition, the material selection range of the deformed body can be expanded, for example, a corrugated tube made of ordinary material plated with at least one layer of rubber material.

Embodiment 5

As shown in FIG. 6, a valve in Embodiment 5 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

Applying the technical solution of the fifth embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the fifth embodiment effectively solves the problem that the valve in the prior art has a low sealing performance and is prone to media leakage.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the first end of the deformed body is hermetically connected to the opening and closing component 20, and the second end of the deformed body is hermetically connected to the housing component 10 to prevent leakage of the fluid medium. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is provided in the valve body 11, and an opening and closing passage communicating with the fluid passage 111 is provided in the middle of the valve body 11. The opening and closing assembly 20 is disposed at least partially in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the opening-closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the housing assembly 10 further includes a valve cover 12, and the valve cover 12 is disposed at an end of the opening and closing channel away from the fluid channel 111. When two deformed bodies are provided, the first deformed body 41 and the second deformed body 42 are included. The first deformed body 41 and the second deformed body 42 are respectively disposed on both sides of the valve cover 12. The arrangement of the valve cover 12 in the above structure can make the opening-closing assembly 20 more stable and reliable on the one hand, and on the other hand, the deformed body can be installed through the valve cover 12. The interaction between the valve cover 12 and the valve body 11 can improve the sealing performance of the deformed body to achieve a better shielding effect. The arrangement of the first deformed body 41 and the second deformed body 42 can form a double-layer shielding effect to achieve a better shielding effect. More deformation bodies can be provided, and two is the preferred solution of this embodiment.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the housing assembly 10 further includes an end cover 14. The end cover 14 is disposed on a side of the valve body 11 away from the valve cover 12. The end cover 14 is opened and closed. The component 20 is fitted with a sealing groove. The arrangement of the end cap 14 in the above structure can facilitate the inspection and maintenance of the valve. Further, the sealing groove is provided to better cooperate with the opening-closing component 20 and improve the sealing performance of the opening-closing component 20 to the fluid passage 111.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the connection between the valve body 11 and the valve cover 12 is a first connection port, and the connection between the valve body 11 and the end cover 14 is a second connection port. The structure of the port is the same as that of the second connection port, so that the valve body 11 is modified by replacing the first connection port with the second connection port. The above structure can make the modification of the positive and negative valve body 11 convenient and quick, and the valve can be modified according to actual needs. It is worth noting that the execution component 30 does not need to be changed during the modification process of this embodiment.

It is worth noting that the valve flap 22 is provided with at least one, and the middle of the fluid passage 111 is provided with an opening and closing port that cooperates with the valve flap 22. When a plurality of valve flaps 22 are provided, a stabilizer bar extends from the bottom of the last valve flap 22 away from the valve cover 12, and the stabilizer bar cooperates with a sealing groove on the end cover 14 to stabilize the opening and closing assembly 20. Preferably, two valve flaps 22 and two opening and closing ports are provided, and a stabilizer bar is extended at the bottom of the valve flap 22 away from the valve cover 12. Such a setting of the opening-closing assembly 20 has a small unbalanced force, allows a large pressure drop, and has a large flow coefficient. A smaller execution component 30 can be selected at the same flow coefficient. As shown in FIG. 6, in the technical solution of the fifth embodiment, the opening-closing assembly 20 is disposed at an angle with the axis of the fluid passage 111, and an opening-closing port that is matched with the valve flap 22 is provided in the middle of the fluid. The arrangement of the opening and closing port can better cooperate with the valve flap 22. Further, the valve flap 22 may be made of a flexible and deformable material to change the flow curve of the fluid medium by changing the shape, such as equal percentage, linearity, and quick opening.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the opening and closing port is disposed at an angle with the axis of the fluid channel 111, and the sealing structure is a first sealing seat 51 that is disposed inside the opening and closing port. The above structure can reduce the resistance of the opening-closing component 20 to the fluid medium, thereby reducing the impact of the fluid medium on the shielding component 40 and improving the stability of the shielding component 40. The arrangement of the first sealing seat 51 can improve the sealing performance between the opening and closing port and the valve flap 22. The opening and closing port of this embodiment is preferably parallel to the axis of the fluid passage 111.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the two ends of the deformed body are respectively sealed, and the first end of the deformed body is provided with a first flange, an inner hole is provided in the first flange, and an inner hole is provided in the inner hole. Embedded parts 43, the valve stem 21 is provided with a split plate near the valve flap 22. The split plate is provided with a square hole that is relatively stationary with the valve stem 21. A conical ring 44 is connected to the split plate. A sealing gasket 45 is provided between the tapered hole rings 44, and the embedded piece 43 and the tapered ring 44 are fixed and clamped by a fifth fastener. The second end of the deformed body is provided with a second flange. The second flange is provided between the valve body 11 and the execution assembly 30. The valve body 11 and the execution assembly 30 are fixed and clamped by the sixth fastener. In order to prevent the fluid medium from contacting a part of the valve stem 21 on the side of the half-plate away from the valve body 11.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the parts of the housing assembly 10 and the opening and closing assembly 20 that are in contact with the fluid medium are made of stainless steel or special alloy. The above structure can replace the components that do not contact the medium with ordinary materials, which can save valuable materials, reduce costs, and have a broad market prospect. The above structure is the preferred solution of this embodiment, and the metal part of the entire valve can also be made of stainless steel or special alloy according to requirements.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the execution component 30 is configured as an electric actuator, a hydraulic cylinder, a cylinder, or a manual control mechanism. This embodiment is preferably a hydraulic cylinder, an air cylinder, or a manual control mechanism. When a hydraulic cylinder or an air cylinder is used, the telescopic rod can be directly used as the valve rod 21. The manual control mechanism can be set as a link mechanism, or it can be ratcheted to improve the effect of automatic sealing.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the deformed body is made of a rubber material or a deformable metal structure. Specifically, the rubber material may be butyl rubber or natural rubber, and the variable metal structure may be provided as a corrugated tube or other deformable structure made of stainless steel or a special alloy.

As shown in FIG. 6, in the technical solution of the fifth embodiment, the deformed body has at least one layer. In the above structure, the deformed body can be formed by stacking multiple layers of materials, so that the advantages of each material can be combined and the shielding effect can be better. In addition, the material selection range of the deformed body can be expanded, for example, a corrugated tube made of ordinary material plated with at least one layer of rubber material.

Embodiment Six,

As shown in FIGS. 7 and 9, a valve in Embodiment 6 includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40. The housing assembly 10 is provided with a fluid passage 111. The opening-and-closing assembly 20 extends at least partially telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The execution component 30 is connected to the opening and closing component 20 to control the amount of expansion and contraction of the opening and closing component 20. The shielding assembly 40 includes at least one deformed body, and the deformed body is disposed between the opening-closing assembly 20 and the housing assembly 10 to prevent leakage of the fluid medium in the fluid passage 111.

By applying the technical solution of the sixth embodiment, the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can shield the fluid medium in the fluid passage 111 while the opening and closing assembly 20 controls the flow of the fluid passage 111. , To prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening and closing assembly 20 and the housing assembly 10, so that the leakage of the medium due to the low sealing performance of the valve can be avoided. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the sixth embodiment effectively solves the problem that the valve in the prior art has low sealing performance and is prone to media leakage.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the first end of the deformed body is hermetically connected to the opening and closing assembly 20, and the second end of the deformed body is hermetically connected to the housing assembly 10 to prevent fluid medium. Give way. The above structure can better shield and seal the fluid medium, thereby preventing the fluid medium from leaking from the gap between the opening-closing assembly 20 and the housing assembly 10.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the housing assembly 10 includes a valve body 11, a fluid passage 111 is disposed in the valve body 11, and a middle portion of the valve body 11 is provided with an opening communicating with the fluid passage 111. Closed passage, the opening and closing assembly 20 is at least partially disposed in the opening and closing passage. The fluid channel 111 is provided to communicate with an external pipe. The opening-closing passage is provided for installing the opening-closing assembly 20 so as to better control the flow of the fluid passage 111.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the opening-closing assembly 20 includes a valve stem 21 and a valve flap 22. The first end of the valve stem 21 is connected to the execution assembly 30, and the execution assembly 30 drives the valve stem 21 toward or away from the fluid passage 111. The valve flap 22 is connected to the second end of the valve stem 21, and the valve flap 22 extends telescopically into the fluid passage 111 to control the flow of the fluid passage 111. The fluid passage 111 is provided with a sealing structure that cooperates with the valve flap 22. The above structure controls the flow of the fluid passage 111 by controlling the amount of expansion and contraction of the valve flap 22. When the flow is zero, the valve is in a closed state. The cooperation of the sealing structure can better control the flow and improve the tightness of the valve in the closed state.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the opening-closing assembly 20 is disposed at an angle with the axis of the fluid passage 111, and an opening-closing port that is matched with the valve flap 22 is provided in the middle of the fluid. The arrangement of the opening and closing port can better cooperate with the valve flap 22.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the opening and closing port is disposed at an angle with the axis of the fluid channel 111, and the sealing structure is a first sealing seat 51 that is disposed inside the opening and closing port. The above structure can reduce the resistance of the opening-closing component 20 to the fluid medium, thereby reducing the impact of the fluid medium on the shielding component 40 and improving the stability of the shielding component 40. The arrangement of the first sealing seat 51 can improve the sealing performance between the opening and closing port and the valve flap 22.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the housing assembly 10 further includes a valve cover 12, and the valve cover 12 is disposed at an end of the opening and closing channel away from the fluid channel 111. When two deformed bodies are provided, the first deformed body 41 and the second deformed body 42 are provided. The first deformed body 41 and the second deformed body 42 are provided on both sides of the valve cover 12, respectively. The arrangement of the valve cover 12 in the above structure can make the opening-closing assembly 20 more stable and reliable on the one hand, and on the other hand, the deformed body can be installed through the valve cover 12. The interaction between the valve cover 12 and the valve body 11 can improve the sealing performance of the deformed body to achieve a better shielding effect. The arrangement of the first deformed body 41 and the second deformed body 42 can form a double-layer shielding effect to achieve a better shielding effect. More deformation bodies can be provided, and two is the preferred solution of this embodiment.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the first end of the first deformed body is hermetically connected to the valve stem, and the second end of the first deformed body is hermetically connected to the valve body and the valve cover. between. The housing assembly further includes a bracket, which is connected to the valve cover and is on a side of the valve cover away from the valve body. A first end of the second deformed body is hermetically connected to the valve stem, and a second end of the second deformed body is hermetically connected between the bracket and the valve cover. The above structure enables the first deformed body and the second deformed body to be stably installed inside the valve, thereby ensuring the tightness of the valve. And the installation of the two denatured bodies in this embodiment is simpler and more convenient.

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, the valve stem is provided with a mounting groove, and the first end of the first deformed body and / or the second deformed body is installed in the mounting groove through an elastic seal. position. With the above structure, the deformed body can be more stably installed on the valve stem to ensure the tightness of the first deformed body and the second deformed body, thereby ensuring the tightness of the valve. .

As shown in FIG. 7 to FIG. 9, in the technical solution of the sixth embodiment, a sealing ring is provided at a junction between the valve cover and the valve stem. The above structure can further add a layer of sealing, thereby making the sealing of the valve more stable and reliable. Further, the seal ring is provided as an annular rubber seal, which ensures that the seal is formed without affecting the movement of the valve stem. Further, other parts having a joint with the valve stem may be provided with a seal ring. For example: a sealing ring can also be provided at the junction of the bracket and the valve stem; or when a connection plate is provided between the bracket and the valve cover, and the connection plate and the valve stem have an interface, a sealing ring can also be provided here.

Example Seven,

The difference between this embodiment and Embodiments 1 to 6 lies in:

As shown in FIG. 10 and FIG. 11, the valve in this embodiment is provided with a deformed body, that is, a first deformed body 41. A first end of the first deformed body 41 is formed by clamping the valve cover 12 and the valve body 11. Static seal.

The second end of the first deformed body 41 is mounted on the valve stem, and the second end of the first deformed body 41 has a flange, and the flange is mounted on the valve stem through the first fixing assembly 100.

The first fixing assembly 100 includes a first fixing plate 101 and a second fixing plate 102, and a flange is provided between the first fixing plate 101 and the second fixing plate 102. The first fixing plate 101 is detachably connected to the valve stem, and the second fixing plate 102 is connected to the first fixing plate 101 through a fastener and clamps the flange.

At least one end surface of the upper and lower ends of the flange is provided with at least one convex ring structure 411, preferably a semicircular cross-section ring, through cooperation with the groove-shaped structure 103 provided on the first fixing assembly 100, so that Form at least one sealed weir. The groove-shaped structure 103 is preferably provided as a circular groove.

It is worth noting that the structure of the ring with a semi-circular cross section can also be set as a recessed ring-like structure 411, and a corresponding convex edge structure is provided on the corresponding first fixing component 100. The above-mentioned ring-shaped structure 411 page may be provided in other shapes in cross section.

When the lower end surface of the flange is provided with at least one raised semi-circular cross-section ring, the end surface of the first fixing plate 101 close to the flange is provided with groove-shaped structures 103 having a number of the above-mentioned rings. When the upper end surface of the flange is provided with at least one raised semi-circular cross-section ring, the end surface of the second fixing plate 102 close to the flange is provided with groove-shaped structures 103 not less than the number of the above-mentioned rings. Preferably, a plurality of raised semicircular cross-section rings are provided on the upper and lower end faces of the flange.

Further, an opening is provided on a portion of the first fixing plate 101 near the valve stem and the flange, and a triangular seal 600 is provided on the opening. The triangular seal 600 can not only close to the end surface of the first deformed body 41 but also communicate with the valve. The rod is snug to form a static seal.

Embodiment eight,

The difference between this embodiment and the seventh embodiment lies in:

As shown in FIG. 12, a second deformed body 42 is added to the valve of this embodiment. The first end of the second deformed body 42 is clamped by the guide bracket 13 and the bearing seat 15 on which the bearing is mounted to form a static seal. The connection manner of the second end of the second deformed body 42 is the same as that of the second end of the first deformed body 41 in the seventh embodiment.

Specifically, the second end of the second deformed body 42 is mounted on the valve stem, and the second end of the second deformed body 42 has a flange, and the flange is mounted on the valve stem through the second fixing assembly 200. The structure of the second fixing component 200 is the same as or similar to that of the first fixing component 100.

The second fixing assembly 200 includes a third fixing plate 201 and a fourth fixing plate 202, and a flange is provided between the third fixing plate 201 and the fourth fixing plate 202. The third fixing plate 201 is detachably connected to the valve stem, and the fourth fixing plate 202 is connected to the first fixing plate 101 through a fastener and clamps the flange.

At least one end surface of the upper and lower ends of the flange is provided with at least one raised semicircular cross-section ring on at least one end surface, and at least one sealing weir is formed by cooperating with the groove-shaped structure 103 provided on the second fixing component 200. The groove-shaped structure 103 is preferably provided as a circular groove.

When the lower end surface of the flange is provided with at least one raised semicircular cross-section ring, the end surface of the third fixing plate 201 close to the flange is provided with groove-shaped structures 103 having the number of the above-mentioned rings. When the upper end surface of the flange is provided with at least one raised semicircular cross-section ring, the end surface of the fourth fixing plate 202 close to the flange is provided with groove-shaped structures 103 having a number of rings as described above. Preferably, a plurality of raised semicircular cross-section rings are provided on the upper and lower end faces of the flange.

Further, an opening is provided on a portion of the third fixing plate 201 near the valve stem and the flange, and a triangular seal 600 is provided on the opening. The triangular seal 600 can not only close to the end surface of the second deformed body 42 but also communicate with the valve. The rod is snug to form a static seal.

It is worth noting that, in this embodiment, when the first deformed body 41 is damaged and the medium leaks to the inner cavity of the guide bracket 13, the deformed body II can also be sealed.

Further, two sealing rings are provided between the valve cover 12 and the valve stem, and when the internal cavity of the valve body 11 leaks, a first protective barrier is formed.

Further, the semi-circular cross-section ring at the second end of the deformed body can both reduce the sealing pressure and prevent the flange from moving.

Further, at least two deforming bodies are provided, which can further effectively isolate the leakage of the medium. Unlike the packing seal, this structure can solve the problem of running and leaking to the greatest extent, and even permanently solve the problem of running and leaking.

Embodiment Nine,

The difference between this embodiment and the first to eighth embodiments is that the valve in this embodiment is provided as a butterfly valve, preferably a three-eccentric butterfly valve, and specifically relates to a new sealing method of the three-eccentric butterfly valve.

What needs to be known is that butterfly valves are widely used in various fields of industry due to their light weight, short structure length, low cost, and excellent performance. They have replaced gate valves, ball valves, and regulating valves. It is especially suitable for large caliber and large circulation coefficient. Triple eccentric butterfly valve is the development direction of butterfly valve in the future. It has the characteristics of non-friction opening, long life and high pressure resistance, which is suitable for various severe working conditions.

However, the traditional triple eccentric butterfly valve uses packing seals, and there are still problems such as aging of the packing and leakage, which not only wastes resources, but also pollutes the environment.

As shown in FIGS. 13 to 16, the butterfly valve provided by the present invention is provided with a deformed body. The flange at the first end of the deformed body is clamped by the bearing seat 15 and the bracket 13 to form a static seal. The flange at the second end of the deformed body is up and down. The end surface has a plurality of raised annular structures 411, preferably semicircular cross-section rings, which are matched with the groove-like structure 103 of the third fixing component 300 and fixed at the outer circle of the valve stem to form a static seal. The groove-like structure 103 is preferably a circular groove. The structure of the third fixing component 300 is the same as or similar to that of the first fixing component 100 and the second fixing component 200.

The above solution solves the problem that the rotary valve packing is used for a long time, and the inner hole wear becomes large and leaks.

It should be noted that the butterfly valve in this embodiment includes a housing assembly 10, an opening and closing assembly 20, an execution assembly 30, and a shielding assembly 40.

Wherein, the housing assembly 10 is provided with a fluid passage 111, the opening-closing assembly 20 is at least partially located in the fluid passage 111, and a cross-sectional area of a part of the opening-closing assembly 20 in the fluid passage 111 is adjustable to control the fluid passage 111 The execution component 30 is connected to the opening and closing component 20 to control the cross-sectional area of the opening and closing component 20; the shielding component 40 includes at least one deformed body, and the deformed body is disposed between the opening and closing component 20 and the housing component 10 to prevent The fluid medium in the fluid passage 111 leaks.

Further, the housing assembly 10 includes a valve body 11, a bracket 13, and a bearing seat 15. The fluid passage 111 is disposed in the valve body 11; the bracket 13 is mounted on the valve body 11; and the bearing seat 15 is disposed on the bracket 13 away from the valve body 11. Side; the actuator 30 is mounted on the bearing seat 15 side away from the bracket 13. The first end of the opening-closing assembly 20 is connected to the execution assembly 30, and the rest passes through the bearing seat 15, the bracket 13, and the valve body 11, and is partially located inside the valve body 11. A part of the opening-closing assembly 20 in the fluid passage 111 is provided with a valve flap 22. By rotating this part of the opening-closing assembly 20, the valve flap 22 is caused to rotate in the fluid passage 111, thereby changing a cross-sectional area.

Further, the butterfly valve of this embodiment includes an upper valve stem 400 and a lower valve stem 401. The lower valve stem 401 is provided with flanges, and thrust bearings 403 are provided at the upper and lower ends of the flange. During the 22 process, friction can be reduced and torque reduced. Preferably, the above-mentioned flange is provided as a complete annular structure 411 or a partially annular structure 411. For example, the lower valve stem 401 of a butterfly valve mostly rotates reciprocally at 90 °, and may be provided as a partially annular structure 411 within a stroke range. The above-mentioned flange can also position the lower valve stem 401 to form a certain protection for the valve flap 22 inside the fluid passage 111.

Specifically, the flange on the lower valve stem 401 is installed on the bracket 13 or the valve body 11. When the flange is installed on the valve body 11, the valve body 11 is provided with a mounting groove 212 opening, a flange, and an adapted thrust bearing. 403 is mounted on the mounting groove 212 of the valve body 11 through the mounting assembly. Further, the mounting assembly includes an annular structure having an “L” -shaped cross section and a fastener for fixing the annular structure to the valve body 11, and the fastener may be provided as a screw or a bolt.

Further, a plurality of sealing rings are provided on the flange end surface of the valve body 11 and the outer circle of the lower valve stem 401 to prevent leakage of the medium.

Further, the lower valve stem 401 has a spiral groove, and the position, angle, and direction are the keys to controlling the opening of the rotary valve by 90 °;

Further, a lower end of the upper valve stem 400 is provided with a guide sleeve. When the electric actuator drives the upper valve stem 400 to perform a linear lifting movement, when the guide sleeve moves downward, the lower valve stem 401 opens with the valve flap 22, and when the guide sleeve moves upward, the lower valve stem 401 closes with the valve flap 22. The linear motion of the electric actuator is converted into a rotational motion of the lower valve stem 401. Any kind of drive device with a straight stroke can realize the control of the rotary valve, thus replacing the packing seal and changing to a static seal.

Further, linear grooves are provided on both sides of the outer circle of the guide sleeve to restrict the guide sleeve from sliding up and down. A top wire 701 is provided at the other end of the circumference, and is inserted into the spiral groove 700 of the lower valve stem 401. Not only for guiding, but also as an important component for transmitting torque.

Embodiment 10,

The difference between this embodiment and Embodiments 1 to 8 lies in:

As shown in FIG. 17, in the technical solution of the tenth embodiment, the shielding assembly 40 is provided as two deformed bodies. The deformed body near the actuator 30 is a rubber elastic body or a bellows assembly 800, and the deformed body far from the actuator 30 is Bellows assembly 800. In the above structure, the rubber elastic body or the bellows assembly 800 can form a barrier between the fluid medium and the outside atmosphere to ensure zero leakage of the valve. The arrangement manner of the rubber elastic body may be the same as that of the first deformed body and the second deformed body in the above embodiment.

As shown in FIG. 17, in the technical solution of the tenth embodiment, the opening-closing assembly 20 includes a valve stem 21 and a valve flap 22, a first end of the rubber elastic body is sealedly connected to the housing assembly 10, and a second end of the rubber elastic body Sealed with the valve stem. The first end of the bellows assembly 800 is sealedly connected to the housing assembly 10, and the second end of the bellows assembly 800 is sealedly connected to the valve stem. The above structure can form two barriers and improve the sealing performance of the valve. The arrangement manner of the bellows assembly 800 in this embodiment may be the same as or similar to the arrangement manner of the first deformed body and the second deformed body in the above embodiment. The bellows assembly 800 is preferably a metal bellows. Further, it may be provided as a metal bellows with an insulating skin.

It is worth noting that the housing assembly 10 includes a valve body 11 and a plurality of connection structures. A fluid passage 111 is provided in the valve body 11. A plurality of connection structures are provided between the valve body 10 and the execution assembly 30. The valve body 10 is cooperatively connected to the shielding assembly 40. The plurality of connection structures are provided with a valve cover 12, a bracket 13, an end cover 14, and / or a bearing seat.

Embodiment 11

The difference between this embodiment and Embodiment 10 lies in:

As shown in FIGS. 18 to 20, in the technical solution of the eleventh embodiment, the bellows assembly 800 includes a bellows member 801, an inner support sleeve 802, and an isolation disc 803. The inner support sleeve 802 is disposed between the bellows 801 and the valve stem. The isolation disk 803 is disposed between the inner support sleeve 802 and the housing component 10, and the isolation disk 803 is sealedly connected to the inner support sleeve 802 and the housing component 10, respectively. A first end of the corrugated pipe member 801 is connected to the isolation disc 803, and a second end of the corrugated pipe member 801 is sealedly connected to the valve stem 21. The above structure can make the installation of the bellows assembly 800 more stable and reliable. The connection of the bellows 801 can be connected by welding, preferably automatic welding. At both ends of the corrugated pipe fitting 801, connection flanges are provided. The corrugated pipe fitting 801 is welded to the connection flange, and the joints of the connection flange are provided with a sealing structure, such as a seal ring, a gasket or a sealing rib. The above-mentioned sealed connection can be formed with a static gasket by means of a sealing gasket or the like. For example, a sealing structure is provided between the isolation disc 803 and the valve stem 21 and the valve body 11 to form a plurality of static seals.

As shown in FIGS. 18 to 20, in the technical solution of the eleventh embodiment, the inner side of the inner support sleeve 802 is sealedly connected to the valve stem 21, and a shielding cavity is formed between the bellows 801 and the valve stem 21. The shielding cavity can further improve the reliability of the valve. This can form two static seals and improve the tightness of the valve.

As shown in FIG. 18 to FIG. 20, in the technical solution of the eleventh embodiment, at least one water-cooled sealed cavity 900 is provided between the two deformed bodies, and the water-cooled sealed cavity 900 communicates with a water-cooled circuit. The water-cooled circuit in the above structure can make cooling water continuously pass through the water-cooled sealed cavity 900, which can reduce the temperature transmission of the valve stem and ensure the strength of the valve stem.

As shown in FIG. 18 to FIG. 20, in the technical solution of the eleventh embodiment, at least two sets of static seals are provided on both sides of the water-cooled sealed cavity 900, and at least one dynamic seal is provided in the water-cooled sealed cavity 900. The above structure can improve the stability of the water-cooled sealed cavity 900 while ensuring the tightness of the water-cooled sealed cavity 900.

One end of the water-cooled sealed cavity 900 in this embodiment has a common static seal with the rubber elastic body, that is, the rubber elastic body exists as one wall surface of the water-cooled sealed cavity 900.

Embodiment 12

The difference between this embodiment and the eleventh embodiment lies in:

As shown in FIG. 21, in the technical solution of the twelfth embodiment, the water-cooled sealed cavity 900 in this embodiment exists independently. Specifically, when two deformation bodies are provided, the water-cooled sealed cavity 900 is provided at two Between deformers. When the number of deformed bodies is set larger, the water-cooled sealed cavity 900 is disposed between two adjacent deformed bodies. A corresponding number of water-cooled sealed cavities 900 may be provided as required.

It is worth noting that the water-cooled sealed cavity 900 is provided between a plurality of connection structures. For example, when the plurality of connection structures are provided as the valve cover 12, the bracket 13, and the end cover 14, the bracket 13 is located between the valve cover 12 and the end cover 14. A static seal is provided on both sides of the bracket 13, a communication hole of a water-cooling circuit is provided on the bracket 13, and a water-cooled sealing cavity 900 is provided in the bracket 13. The static seal here forms a static seal with the valve stem 21 at the same time.

It is worth noting that the guide sleeve structure can be set according to the way of setting the valve stem. When the valve stem needs to be provided with a stem nut, an anti-rotation structure can be provided.

As shown in FIG. 22 to FIG. 27, in the technical solution of the invention, six types of sealing methods are provided between the valve seat 23 and the valve flap 22. Including a plane seal, a first soft seal, a second soft seal, a double valve disc structure, a hard alloy layer structure and a throttle structure. The above-mentioned sealing method is a preferred solution and can be adjusted as required.

specifically:

As shown in FIG. 22, the sealing method here is a flat seal. The sealing surface accuracy of this sealing method is relatively easy to obtain and easy to process. It is a metal-to-metal sealing method with high hardness, high applicable temperature, and long life. Suitable for water treatment, light industry, petroleum, chemical and other occasions.

As shown in FIG. 23, the sealing method here is the first soft seal, and the applicable temperature is ≤300 ° C. It is a non-metal-to-metal sealing method. The sealing is reliable. It is generally used in low-pressure occasions and has a good sealing effect. There is no need to increase the hardness of the seal seat.

As shown in Figure 24, the sealing method here is a second soft seal. A non-metallic gasket is embedded in the valve flap 22 to make line contact with the convex portion of the metal valve seat 23, which makes it easier to seal. Nursery rhymes are suitable for low pressure and no more than At 300 ℃, the gasket is easy to replace.

As shown in Figure 25, the sealing method here is a double-valve structure. The double-valve can effectively reduce the opening and closing torque. It is suitable for high pressure and large caliber. It adopts a metal cone seal and belongs to line contact. Fibers, etc. can cut the media. At the same time, it can improve the sealing surface hardness, long life and erosion resistance.

As shown in Figure 26, the sealing method here is a cemented carbide layer structure. The valve flap 22 in this structure is overlaid with a layer of cemented carbide. The semicircular cross section of the cemented carbide and the metal valve seat is convex and annular. Wire sealing, good sealing effect and long life. With the function of cutting materials.

As shown in Figure 27, the sealing method here is a throttling structure. The structure of the valve disc 22 has a function of adjusting the flow rate, and is used in conjunction with a positioner. The rising height of 22 and the annular cross section between the valve seat 23 are changed to adjust the flow rate. When sealing, the flange of the valve flap 22 and the valve seat 23 form a conical seal.

Embodiment 13

The difference between this embodiment and the ninth embodiment lies in:

As shown in FIG. 28, in the technical solution of the twelfth embodiment, the lower valve stem passes through the valve body, and the valve body and the lower valve stem have two extrusion positions, and the two contact positions are provided with an upper shaft sleeve and a lower shaft. Bushing.

The valve body 11 is provided with an upper sleeve installation groove on the side close to the execution component 30. The upper sleeve installation groove is installed in the upper sleeve installation groove through the installation component 500. The installation component 500 includes a sealing gland and a sealing gland. It is a ring structure, and the cross section of one side of this ring structure is "L" shape. A sealing structure is provided between the sealing gland and the valve stem 21, and a sealing structure is also provided between the sealing gland and the valve body 11. The sealing structure is installed on the valve body 11 through a fixing member, and the fixing member is preferably provided as a fixing bolt. A packing assembly 405 is provided between a part of the sealing gland in the upper sleeve installation groove and the upper bushing 404. The packing assembly 405 includes a lower packing close to the upper bushing 404, an upper packing close to the sealing gland, and an upper and a lower packing. The elastic member is preferably a spring.

The valve body 11 is provided with a mounting hole for mounting a lower valve stem 401 on a side remote from the actuator 30. A mounting hole 212 for a lower shaft sleeve 406 is provided in the mounting hole. The lower shaft sleeve 406 is installed under the valve body 11 through the end cover 14. In the mounting groove 212 of the shaft sleeve 406, a split ring 407 is provided between the end cover 14 and the lower shaft sleeve 406. The end cover 14 is mounted on the valve body 11 by bolts, and closes the lower valve stem 401.

Embodiment 14

The difference between this embodiment and any one of Embodiments 1 to 13 is that:

As shown in FIG. 29, in the technical solution of the twelfth embodiment, an end cover and a limit seat are provided between the execution component and the valve body. The first end of the shielding component is preferably disposed between the limit seat and the end cover, and can be adjusted as required. The second end of the shielding component is disposed on the valve stem, preferably on the upper valve stem.

The opening and closing assembly in this embodiment includes an upper valve stem, a lower valve stem, and a spherical opening and closing member. The spherical opening and closing member is equivalent to the valve flap in the above embodiment, and has a first position for opening the fluid passage and a first position for closing the fluid passage Two positions.

The position where the spherical opening-closing member contacts the upper valve stem is only a spiral groove. The spiral groove is provided on the spherical opening-closing member or the upper valve stem, and a pin-shaped structure adapted to the spiral groove is provided correspondingly. When the spiral groove is provided on the upper valve stem, the pin-like structure is detachably connected to the spherical opening and closing member. The spherical opening and closing member is provided with a matching groove adapted to the upper valve stem. The above structure can control the upper and lower valve rods to perform a telescopic movement through the execution component to control the rotation of the spherical opening and closing member, so as to achieve the opening and closing effect. The position, angle and direction of the spiral groove are the key to control the opening of the rotary valve by 90 °.

It is worth noting that the matching manner of the spherical opening-closing member and the upper valve stem in this embodiment can also be adjusted as required, for example, the turbine worm, the gear set, and the connecting rod set.

The shielding component in this embodiment has the same or similar structure as the shielding component in the above embodiment.

It is worth noting that a limit position structure is provided at the position where the limit seat and the upper valve rod cooperate in this embodiment. The limit structure includes a bayonet structure provided on the limit base and a limit groove provided on the upper valve stem. The bayonet structure is detachably connected to the limit base. The limiting groove is a straight groove. After the limiting groove is matched with the bayonet structure, the idle upper valve stem can only be moved along the axis of the upper valve stem.

The lower valve stem in this embodiment may be integrated with the end cover. In this embodiment, an upper shaft sleeve and a lower shaft sleeve are provided to protect the upper and lower valve stems.

Embodiment 15

The difference between this embodiment and any one of Embodiments 1 to 14 is that:

As shown in FIG. 30 to FIG. 32, in the technical solution of the fifteenth embodiment, a plunger pump 1000 is provided in this embodiment. The plunger pump 1000 is provided with a shielding assembly 40 similar to that in the above embodiment.

The shielding assembly 40 is specifically disposed between the piston rod 1300 and the cylinder liner 1301, and the specific arrangement manner is set according to the structure of the actual plunger pump 1000.

The shielding assembly 40 in this embodiment includes a deformed body 1410, a living flange 1420 installed on the cylinder liner 1301, and a fixing structure 1430 provided on the piston rod 1300. Among them, a first flange 1411 and a second flange 1412 are respectively provided at both ends of the deformed body 1410, and the first flange 1411 of the deformed body 1410 is clamped between the cylinder liner 1301 and the living flange 1420 to form a static seal. At the other end, the second flange 1412 of the deformed body 1410 is fixed on the outer circle of the piston rod 1300 through a fixing structure 1430. The fixing structure 1430 includes a limit plate provided on the periphery of the piston rod 1300. The second flange 1412 has a built-in flange. A cone seal and a built-in flange clamp the triangular seal to form a relatively static seal. The shielding cavity is composed of a cylinder liner 1301, a deformed body 1410, and a triangular sealing gasket, and the medium is prevented from leaking outward.

The deformed body 1410 is provided with at least one layer. The deformed body 1410 may be provided as an elastic colloid. When multiple elastic colloids are provided, including the first elastic colloid and the second elastic colloid, the first elastic colloid material may be composed of a pressure-resistant rubber with fabric. It may also be butyl rubber or natural rubber, and any other rubber or metal may be used. The other elastic colloids are made of the same material or similar to the first elastic colloid. The specific setting method needs to be adaptively changed according to the specific conditions of the location.

The working principle of the plunger pump 1000: the pinion of the input shaft 1200 engages with the large gear on the crankshaft 1201 for decelerating rotation, and is converted into the reciprocating movement of the plunger through the link mechanism 1202. The liquid enters the pump cavity through the liquid inlet pipe 1500, and changes the volume change in the pump cavity into a pressure change, thereby realizing the suction action.

However, the plunger pump 1000 also has some disadvantages. The piston rod 1300 has a large contact area with the seal in the inner hole of the cylinder liner 1301. As the working time increases, the inner hole of the seal will wear and increase, and the gap with the piston rod 1300 will increase. Larger, affecting pump operation and leaking media. The patent solution mainly improves the above disadvantages and can achieve the effect of increasing the service life of the plunger pump 1000. Specifically, a shielding assembly 40 is provided. The seal can be replaced with the shield assembly 40, or both the seal and the shield assembly 40 can be provided.

In addition, the shielding assembly 40 in this embodiment is the same as or similar in structure to the shielding assembly 40 in the above embodiment, and only the setting position and size are adaptively adjusted according to the plunger pump. This embodiment is not limited to the plunger pump, and any pump type device that needs to be provided with a sealed structure can be provided with the shielding assembly in this embodiment as required.

Embodiment 16

The difference between this embodiment and any one of Embodiments 1 to 15 is that:

As shown in FIG. 33, in the technical solution of the fifteenth embodiment, the valve 2000 is provided on the pipeline where the valve is located.

The above-mentioned flapping door 2000 includes a drive structure; a lifter 2002, which is connected to the drive structure; a valve body 2006, the valve body 2006 is a hollow structure, one side of the valve body 2006 is connected to the lifter 2002, and the valve body 2006 A fluid passage is provided on the inside; the sleeve 2003, the sleeve 2003 is detachably connected to the output end of the lifter 2002, and the connecting rope 2008 is provided on the side of the sleeve 2003 away from the lifter 2002; the valve disc 2009, the valve disc 2009 It is arranged on one side of the fluid passage. The side of the valve flap 2009 near the lifter 2002 is rotatably connected to the valve body 2006. The valve flap 2009 has a first position for blocking the fluid passage and a second position for opening the fluid passage; the shielding assembly 40 The shielding assembly 40 is disposed between the sleeve 2003 and the valve body 2006; wherein the connecting rope 2008 is connected to the valve flap 2009 to switch the position of the valve flap 2009 through the lifter 2002. The shielding component 40 is the same as or similar to the shielding component 40 of the above embodiment.

In the above structure, a reducer 2001 is provided between the driving structure and the lifter 2002, and the reducer 2001 is preferably a planetary reducer 2001. A pulley 2007 for guiding the connecting rope 2008 is provided inside the valve body 2006, and the pulley 2007 is fixed inside the valve body 2006.

The inside of the valve body 2006 is provided with a mounting cylinder, the valve disc 2009 is installed on the mounting cylinder, and the centrifugal pump 2011 is provided on the side of the mounting cylinder remote from the valve disc 2009. A cleaning interface 2010 is provided below the installation cylinder. A valve cover 2005 is provided between the lifter 2002 and the valve body 2006.

The shielding assembly 40 includes a deformed body. The first end of the deformed body is installed between the valve cover 2005 and the lifter 2002, and the second end of the deformed body is fixed on the sleeve 2003. The specific setting method of the deformed body is the same as the above embodiment Or similar.

It should be noted that the bearing seat 15 in the present invention may be provided separately, or may be provided integrally with the housing of the bracket 13 or the execution assembly 30, and the specific setting manner is adjusted according to actual needs. In the present invention, a sealing structure is at least partially provided between the contact surfaces between the parts or between the sealing surfaces. The sealing structure is preferably provided as a sealing rubber ring, and can also be provided as a sealing structure of other materials or other structures according to requirements. A sealing groove structure with a mounting sealing structure will be opened.

All embodiments of the present invention are provided with at least one shielding component having the same structure or similar structure, and the shielding component is not limited to the technical solution of the disclosed embodiment, and has the same or similar shielding component as the shielding component in this embodiment. The solutions belong to the protection scope of the present invention.

From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: the arrangement of the shielding assembly 40 between the opening and closing assembly 20 and the housing assembly 10 can control the fluid passage 111 in the opening and closing assembly 20 While shielding the fluid medium in the fluid channel 111 to prevent the fluid medium in the fluid channel 111 from flowing out of the gap between the opening-closing assembly 20 and the housing assembly 10, so as to avoid the low sealing performance of the valve. The resulting media leak. The setting of the deformed body can keep the shielding effect on the fluid medium with the opening and closing of the valve during the operation of the opening and closing assembly 20. The technical solution of the present invention effectively solves the problem that the valve in the prior art has low sealing performance and is prone to media leakage.

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

A valve, comprising:

A housing component (10), which is provided with a fluid channel (111);

An opening-closing component (20), the opening-closing component (20) extending at least partially telescopically into the fluid channel (111) to control the flow of the fluid channel (111);

An execution component (30), the execution component (30) is connected to the opening and closing component (20) to control the amount of expansion and contraction of the opening and closing component (20);

A shielding assembly (40), the shielding assembly (40) including at least one deformed body, the deformed body being disposed between the opening and closing component (20) and the housing component (10) to prevent the fluid The fluid medium in the channel (111) leaks.
The valve according to claim 1, characterized in that a first end of the deformed body is tightly connected with the opening and closing component (20), and a second end of the deformed body is connected with the housing component (10) Seal the connection to prevent leakage of the fluid medium.
The valve according to claim 1, wherein the housing assembly (10) includes a valve body (11), the fluid passage (111) is disposed in the valve body (11), and the valve body (11) An opening-closing passage communicating with the fluid passage (111) is provided in the middle, and the opening-closing assembly (20) is at least partially disposed in the opening-closing passage.
The valve according to claim 3, wherein the opening and closing assembly (20) comprises:

A valve stem (21), a first end of the valve stem (21) being connected to the actuator assembly (30), the actuator assembly (30) driving the valve stem (21) toward or away from the fluid channel 111);

A valve flap (22), which is connected to the second end of the valve stem (21), and the valve flap (22) extends telescopically into the fluid channel (111) to control The flow rate of the fluid channel (111);

A sealing structure (50) is provided in the fluid channel (111) to cooperate with the valve flap (22).
The valve according to claim 4, wherein an opening and closing port that cooperates with the valve flap (22) is provided in a middle portion of the fluid passage, and the opening and closing port is in an axis with the fluid passage (111). Angled, the sealing structure (50) is a first sealing seat (51) disposed inside the opening and closing port.
The valve according to claim 4, characterized in that the sealing structure (50) is a groove (52) provided on an inner wall of the valve body (11) and cooperating with the valve disc (22), and a setting A bushing (53) on the groove (52) and adapted to the valve disc (22) to improve the sealing performance of the valve disc (22).
The valve according to claim 4, characterized in that the housing assembly (10) further comprises a valve cover (12), the valve cover (12) is provided in the opening and closing channel away from the fluid channel (111) One end

When two deformed bodies are provided, the first deformed body (41) and the second deformed body (42) are provided, and the first deformed body (41) and the second deformed body (42) are respectively provided in the deformed body. Both sides of the valve cover (12).
The valve according to claim 7, characterized in that the housing assembly (10) further comprises an end cover (14), the end cover (14) is disposed on the valve body (11) away from the valve cover On one side of (12), the end cover (14) is provided with a sealing groove matched with the opening and closing component (20).
The valve according to claim 8, characterized in that the connection between the valve body (11) and the valve cover (12) is a first connection port, and the valve body (11) and the end cover (11) 14) The connection point is a second connection port, and the first connection port has the same structure as the second connection port, so that the valve can be positively adjusted by replacing the first connection port and the second connection port. Reverse valve body (11).
The valve according to claim 7, characterized in that both ends of the first deformed body (41) are respectively sealed, a first end of the first deformed body (41) is provided with a first flange, and the valve The flap (22) is provided with a circular recessed platform that cooperates with the first flange, and the valve flap (22) is provided with a pressure plate that cooperates with the circular recessed platform, and the pressure plate is fastened by first A piece is fixed on the valve flap (22) to clamp the first flange;

A second flange is provided at a second end of the first deformed body (41), and the second flange is provided between the valve body (11) and the valve cover (12), the valve body (11) and the valve cover (12) are fixed and clamped by a second fastener so that the fluid medium cannot contact the valve stem (21).
The valve according to claim 10, wherein the housing assembly (10) further comprises a bracket (13), the first end of the bracket (13) is connected to the valve cover (12), and the bracket (13) the second end is connected to the execution component (30);

The two ends of the second deformed body (42) are respectively sealed. A first flange of the second deformed body (42) is provided with a third flange, and the third flange is provided between the valve cover (12) and the valve cover (12). Between the bracket (13), the valve cover (12) and the bracket (13) are fixed by a third fastener and clamp the third flange;

A fourth flange is provided at a second end of the second deformed body (42), and an inner hole is provided in the fourth flange, and an embedded part (43) is provided in the inner hole, and the valve stem (21) is provided with a tapered ring (44), a gasket (45) is provided between the embedded part (43) and the tapered ring (44), and the embedded part (43) and the The tapered ring (44) is fixed and clamped by a fourth fastener (45).
The valve according to claim 7, characterized in that both ends of the first deformed body (41) are sealed respectively, a first end of the first deformed body (41) is provided with a first flange, and the first An inner hole is provided in a flange, an embedded part (43) is provided in the inner hole, and a valve plate (21) is provided with a split plate near the valve disc (22). The plate is provided with a square hole that is relatively stationary with the valve stem (21). A conical hole ring (44) is connected to the split plate, and the embedded piece (43) and the conical hole ring (44) are connected. A sealing gasket (45) is provided, and the embedded piece (43) and the tapered ring (44) are fixed and clamped by a fifth fastener;

A second flange is provided at a second end of the first deformed body (41), and the second flange is provided between the valve body (11) and the valve cover (12), the valve body (11) and the valve cover (12) are fixed and clamped by a sixth fastener so that the fluid medium cannot contact the split plate away from the valve body (11) One part of said valve stem (21).
The valve according to claim 7, characterized in that a first end of the first deformed body (41) is sealingly connected to the valve stem (21), and a second of the first deformed body (41) An end seal is connected between the valve body (11) and the valve cover (12).
The valve according to claim 13, characterized in that the housing assembly (10) further comprises a bracket (13), the bracket (13) is connected to the valve cover (12) and is located in the valve cover (12) a side far from the valve body (11);

A first end of the second deformed body (42) is hermetically connected to the valve stem (21), and a second end of the second deformed body (42) is hermetically connected to the bracket (13) and the bracket. Between the bonnet (12).
The valve according to claim 14, characterized in that the valve stem (21) is provided with a mounting groove (212), the first deformed body (41) and / or the second deformed body (42) The first end is mounted at a position of the mounting groove (212) by an elastic seal (80).
The valve according to any one of claims 7 to 15, characterized in that a sealing ring is provided at a junction between the valve cover (12) and the valve stem (21).
The valve according to claim 1, characterized in that the execution component (30) is provided as an electric actuator, a hydraulic cylinder, an air cylinder or a manual control mechanism.
The valve according to claim 1, wherein the deformed body is made of a rubber material or a deformable metal structure.
The valve according to claim 4, characterized in that the housing assembly (10) further comprises a valve cover (12), and when the deformed body is provided as one, including a first deformed body (41), the first A first end of a deformed body (41) is clamped by the valve cover (12) and the valve body (11) to form a static seal;

A second end of the first deformed body (41) is mounted on the valve stem (21), a second end of the first deformed body (41) has a flange, and the flange passes through a first fixing component (100) Installed on the valve stem (21);

A convex ring structure (411) is provided on at least one end surface of the upper and lower ends of the flange, and at least one of the ring structure (411) is provided through the ring structure (411). The groove-like structure (103) on the first fixing component (100) cooperates to form at least one sealing weir.
The valve according to claim 19, wherein when two deformed bodies are provided, the first deformed body (41) and the second deformed body (42) are included; the first deformed body (41) ) Is set in the same manner as the first deformable body (41) described in claim 19;

The housing assembly (10) further includes a bracket (13) and a bearing seat (15), and the first end of the second deformed body (42) is clamped by the bracket (13) and the bearing seat (15). And form a static seal;

The second end of the second deformed body (42) is arranged in the same manner as the second end of the first deformed body (41).
The valve according to claim 19 or 20, wherein the first fixing assembly (100) comprises a first fixing plate (101) and a second fixing plate (102);

The flange is disposed between the first fixing plate (101) and the second fixing plate (102), and the first fixing plate (101) is detachably connected to the valve stem (21);

The second fixing plate (102) is connected to the first fixing plate (101) by a fastener and clamps the flange.
The valve according to claim 21, wherein a portion of the first fixing plate (101) near the valve stem (21) and the flange is provided with an opening, and a triangular seal is provided on the opening (600), the triangular gasket (600) forms a static seal with the end face of the first deformed body (41) and the valve stem (21) at the same time.
The valve according to claim 1, characterized in that the shielding assembly (40) is provided as two of the deformed bodies, and the deformed body near the execution component (30) is a rubber elastic body or a bellows assembly (800), the deformed body far from the execution component (30) is the bellows component (800).
The valve according to claim 23, wherein the opening and closing assembly (20) comprises a valve stem (21) and a valve disc (22), a first end of the rubber elastic body and the housing assembly ( 10) Sealed connection, the second end of the rubber elastic body is sealingly connected with the valve stem;

A first end of the bellows assembly (800) is hermetically connected to the housing assembly (10), and a second end of the bellows assembly (800) is hermetically connected to the valve stem.
The valve of claim 24, wherein the bellows assembly (800) comprises:

Corrugated pipe fittings (801);

An inner support sleeve (802), which is disposed between the bellows (801) and the valve stem;

Isolation disk (803), the isolation disk (803) is disposed between the inner support sleeve (802) and the housing assembly (10), the isolation disk (803) and the inner support sleeve (802) ) And the shell assembly (10) are sealed and connected respectively;

A first end of the bellows (801) is connected to the isolation disc (803), and a second end of the bellows (801) is sealingly connected to the valve stem (21).
The valve according to claim 25, characterized in that the inner side of the inner support sleeve (802) is sealedly connected with the valve stem (21), and between the bellows (801) and the valve stem (21) Form a shield cavity.
The valve according to claim 1, wherein the shielding assembly (40) is provided as two of the deformed bodies, and at least one water-cooled sealed cavity (900) is provided between the two deformed bodies, and The water-cooled sealed cavity (900) communicates with a water-cooled circuit.
The valve according to claim 27, wherein at least two sets of static seals are provided on both sides of the water-cooled seal cavity (900), and at least one dynamic seal is provided in the water-cooled seal cavity (900).
A valve, which is a butterfly valve, is characterized in that it includes:

A housing component (10), which is provided with a fluid channel (111);

Hoisting / closing component (20), the hoisting / closing component (20) is at least partially located in the fluid channel (111), and the cross-sectional area of a part of the hoisting / closing component (20) in the fluid channel (111) is adjustable To control the flow of the fluid channel (111);

An execution component (30), the execution component (30) is connected to the opening and closing component (20), so as to control a cross-sectional area of the opening and closing component (20);

A shielding assembly (40), the shielding assembly (40) including at least one deformed body, the deformed body being disposed between the opening and closing component (20) and the housing component (10) to prevent the fluid The fluid medium in the channel (111) leaks.
The valve according to claim 29, wherein the flange of the first end of the deformed body is clamped by the bearing seat (15) and the bracket (13) of the butterfly valve and forms a static seal;

The second end of the deformed body is connected to the opening and closing assembly (20) and forms a static seal.
The valve according to claim 30, wherein the opening and closing assembly (20) includes an upper valve stem (400), and the second end of the deformed body is fixed to the upper part by a third fixing assembly (300). On the valve stem (400);

The second end of the deformed body has a flange, and at least one end surface of the flange is provided with a convex ring structure (411) on at least one end surface, and at least one of the ring structure (411) is provided. The annular structure (411) cooperates with a groove-like structure (103) provided on the third fixing component (300) to form at least one sealing weir.
The valve according to claim 30, wherein the opening and closing assembly (20) comprises an upper valve stem (400), a lower valve stem (401), and a valve disc (22), and the lower valve stem (401) A flange is provided on the upper side, and thrust bearings (403) are provided on the upper and lower ends of the flange, so as to reduce the friction force of the valve stem (21) during the process of opening the valve flap (22).
The valve according to claim 30, wherein the opening and closing assembly (20) comprises an upper valve stem (400), a lower valve stem (401), and a valve disc (22), and the lower valve stem (401) Passing through the valve body (11);

An upper shaft sleeve (404) and a lower shaft sleeve (406) are provided between the valve body (11) and the lower valve stem (401);

An upper shaft sleeve mounting groove is provided on a side of the valve body (11) near the execution component (30), and the upper shaft sleeve (404) is installed in the upper shaft sleeve mounting groove through a mounting component (500). ;

The valve body (11) is provided with a lower sleeve mounting groove on a side remote from the execution component (30), and the lower sleeve (406) is installed in the lower sleeve mounting groove through an end cover (14). .
A valve, the valve is a ball valve, characterized in that it includes:

A housing component (10), which is provided with a fluid channel (111);

Hoisting / closing component (20), the hoisting / closing component (20) is at least partially located in the fluid channel (111), and the cross-sectional area of a part of the hoisting / closing component (20) in the fluid channel (111) is adjustable To control the flow of the fluid channel (111);

An execution component (30), the execution component (30) is connected to the opening and closing component (20), so as to control a cross-sectional area of the opening and closing component (20);

A shielding assembly (40), the shielding assembly (40) including at least one deformed body, the deformed body being disposed between the opening and closing component (20) and the housing component (10) to prevent the fluid The fluid medium in the channel (111) leaks.
The valve according to claim 34, wherein the flange of the first end of the deformed body is clamped by the end cover (14) and the limit seat (16) of the ball valve and forms a static seal;

The second end of the deformed body is connected to the opening and closing assembly (20) and forms a static seal.
The valve according to claim 30, wherein the opening and closing assembly (20) comprises an upper valve stem (400), a lower valve stem (401), and a spherical opening and closing member (24), the spherical opening and closing member (24) disposed between the upper valve stem (400) and the lower valve stem (401).
A valve, which is the valve according to any one of claims 1 to 32, characterized in that the pipeline where the valve is located is provided with a flapper (2000).
The valve according to claim 37, wherein the flapper (2000) comprises:

Drive structure

A lifting machine (2002), said lifting machine (2002) being connected to said driving structure;

A valve body (2006), the valve body (2006) is a hollow structure, one side of the valve body (2006) is connected to the lift (2002), and a fluid passage is provided inside the valve body (2006) ;

A sleeve (2003), the sleeve (2003) is detachably connected to an output end of the lift (2002), and the sleeve (2003) is provided on a side remote from the lift (2002) With connecting rope (2008);

A valve flap (2009), the valve flap (2009) is disposed on one side of the fluid passage, and the valve flap (2009) is rotatably connected to the valve body (2006) on a side close to the lift (2002) The valve flap (2009) has a first position to block the fluid channel and a second position to open the fluid channel;

A shielding assembly (40), which is disposed between the sleeve (2003) and the valve body (2006);

Wherein, the connecting rope (2008) is connected to the valve disc (2009) to switch the position of the valve disc (2009) by the lifter (2002).
A pump includes a shielding assembly (40), wherein the shielding assembly (40) is the shielding assembly (40) according to any one of claims 1 to 38.