CN115899274A

CN115899274A - Regulating valve

Info

Publication number: CN115899274A
Application number: CN202211391392.XA
Authority: CN
Inventors: 吴世荣; 周伟; 董现金
Original assignee: Neway Valve Suzhou Co Ltd
Current assignee: Neway Valve Suzhou Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-04-04
Also published as: WO2024098733A1; ZA202306013B

Abstract

The invention relates to the technical field of valves, in particular to a regulating valve. The valve comprises a valve body, a valve cover, an opening and closing structure and an actuating mechanism, wherein a first mounting surface is arranged on the valve body, a sunken part is sunken in the first mounting surface from outside to inside, and the valve body further comprises a first cavity and a second cavity; the valve cover is provided with a clamping part matched with the concave part, the clamping part is provided with a second mounting surface, and the second mounting surface is flush with the first mounting surface; the opening and closing structure is slidably arranged on the valve cover, one end of the opening and closing structure extends into the valve body, and the opening and closing structure separates or communicates the first cavity and the second cavity through lifting to control the opening and closing of the valve; the actuating mechanism comprises an actuating structure and a support, the actuating end of the actuating structure is connected with the opening and closing structure to drive the opening and closing structure to lift, the support is provided with a limiting surface, and the support is connected with the valve body through a connecting structure to enable the limiting surface to abut against the first mounting surface and the second mounting surface. The regulating valve provided by the invention adopts the clamping type valve cover, reduces the connecting structure, reduces the height of the valve and has a wide application range.

Description

Regulating valve

Technical Field

The invention relates to the technical field of valves, in particular to a regulating valve.

Background

The regulating valve, also known as a control valve, is operated by power to change the flow of fluid by receiving a control signal output by a regulating control unit, and generally comprises an actuator and a valve. The regulating valve automatically controls the opening of the valve according to the regulating position signal, so as to regulate the medium flow, the pressure and the liquid level, and is widely applied to the fields of nuclear power, shipbuilding and petrochemical industry.

The existing regulating valve generally needs to consider a plurality of factors such as size space, weight, anti-seismic requirement, online replacement, factory manufacturing cost and the like in practical application of various fields. For example, the nuclear power field considers the functions of installation space, shock resistance, control performance, online maintenance and replacement adjustment; installation space and weight are considered in the shipbuilding field; the petrochemical industry field considers size space, weight, on-line replacement, manufacturing cost, delivery standard requirements and the like.

However, in combination with the current demands of various fields, the conventional regulating valve has a complex valve structure, a high total height, a large volume and more connecting parts, and is inconvenient to use in equipment in various fields limited by space and weight.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is that the regulating valve in the prior art has the disadvantages of complex structure, high total height, large volume and limited use.

In order to solve the above problems, the present invention provides a regulator valve including:

the valve comprises a valve body, a first mounting surface, a first cavity and a second cavity, wherein the valve body is provided with the first mounting surface, the first mounting surface is recessed from outside to inside and provided with a recessed part, and the valve body also comprises the first cavity and the second cavity which are suitable for medium circulation; the valve cover is provided with a clamping portion, the clamping portion is matched with the recessed portion, the clamping portion is provided with a second mounting surface, and the second mounting surface is flush with the first mounting surface; the opening and closing structure is slidably arranged on the valve cover, one end of the opening and closing structure extends into the valve body, and the opening and closing structure separates or communicates the first cavity and the second cavity through lifting to control the opening and closing of the valve; the actuating mechanism comprises an actuating structure and a support, the actuating structure is arranged on the support, and a driving end of the actuating structure is connected with the opening and closing structure to drive the opening and closing structure to lift; the support is provided with a limiting surface and is connected with the valve body through a connecting structure so that the limiting surface is in limiting butt joint with the first mounting surface and the second mounting surface.

Optionally, in the above-mentioned regulating valve, in the valve cover formed by extending from the second mounting surface to the side away from the actuator along the axial direction of the opening and closing structure, the cross-sectional dimension of the side away from the actuator is smaller than the cross-sectional dimension of the side close to the actuator.

Optionally, in the above-mentioned regulating valve, the recessed portion is formed as a stepped groove, and the recessed portion includes: a first mating face, a first step face, and a second mating face; the shaping of joint portion is the stair structure, joint portion includes: a third mating face, a second step face, and a fourth mating face;

the first step surface and the second step surface are oppositely abutted, the first matching surface and the third matching surface are mutually matched, and the second matching surface and the fourth matching surface are mutually matched.

Optionally, the above regulating valve further comprises: a seal disposed between the first and second step surfaces.

Optionally, the regulating valve is configured such that, along an axial direction of the opening and closing structure, a cross-sectional dimension of the clamping portion, which is formed by extending from the second mounting surface to a side away from the actuating mechanism, is gradually reduced.

Optionally, in the above-mentioned adjusting valve, the clamping portion is configured as a table structure, and the recessed portion is formed as a groove adapted to the clamping portion.

Optionally, in the regulating valve described above, the opening and closing structure includes a valve rod and a valve flap fixedly connected; the governing valve still includes: the valve seat is arranged between the first cavity and the second cavity in the valve body and comprises a guide surface, a mounting groove and a sealing surface, and the guide surface is positioned at the outer edge of the valve seat; the mounting groove is positioned on the upper end surface of the valve seat and is suitable for being matched with a tool; the sealing surface is positioned at the position where the inner wall of the valve seat is contacted with the valve clack and is suitable for being matched with the valve clack to realize sealing and medium flow regulation; the valve flap has a closed state abutting against the valve seat to close the valve and an open state spaced from the valve seat to open the valve.

Optionally, in the above-mentioned regulating valve, a mounting cavity is formed at a position on the valve cover close to the valve rod, and a sealing assembly is mounted in the mounting cavity, and the sealing assembly includes:

a packing disposed between the valve stem and a bonnet;

the compressing piece is arranged on the packing piece and matched with the valve cover to compress the packing piece;

the first backing ring is installed between the bottom end of the installation cavity and the padding piece, and the second backing ring is installed between the padding piece and the pressing piece.

Optionally, the above-mentioned regulating valve further includes a fixing assembly, disposed at a position where the driving end of the actuating structure is connected to the valve rod, and adapted to fixedly connect the driving end of the actuating structure to the valve rod, where the fixing assembly includes:

the first fixing piece and the second fixing piece are relatively fixedly arranged on two sides of a joint of the driving end of the execution structure and the valve rod, a first fixing hole is formed in the first fixing piece, and a second fixing hole is correspondingly formed in the second fixing piece;

and the connecting piece is detachably arranged in the first fixing hole and the second fixing hole in a penetrating manner and is suitable for connecting the first fixing piece and the second fixing piece so as to fix the driving end and the valve rod of the execution structure.

Optionally, in the above-mentioned regulating valve, a switch display portion is disposed on a bracket of the actuating mechanism, an indication portion is disposed on one side of the first fixing member and/or the second fixing member, which is close to the switch display portion, and the indication portion and the switch display portion are adapted to cooperate with an indication valve to indicate an opening and closing state when the opening and closing structure is lifted and lowered.

Optionally, in the above-mentioned adjusting valve, a limiting member is disposed on a bracket of the actuating mechanism, and the switch display portion is disposed on the limiting member; the fixed component is close to one side of the limiting part is formed with a notch matched with the limiting part, and when the driving end of the actuating mechanism drives the opening and closing structure to ascend and descend, the limiting part slides in the notch and is suitable for limiting the vertical motion of the actuating mechanism.

The invention has the following advantages:

1. according to the regulating valve provided by the invention, the valve body is provided with the sunken part, the valve cover is provided with the clamping part which is matched with the valve cover, the first mounting surface on the valve body is flush with the second mounting surface on the upper surface of the clamping part, the lower end surface of the support of the actuating mechanism is abutted against the first mounting surface of the valve body and the second mounting surface of the valve cover, the support of the actuating mechanism and the valve body are fixed, the valve cover is compressed, the typical structures of the support, the valve cover and the valve body which are in up-and-down butt joint are eliminated, connecting parts and spaces are reduced, the structure is simplified, the overall height of the regulating valve is lowered, the size is reduced, the use convenience is enhanced, and the application range is expanded.

2. According to the regulating valve provided by the invention, the clamping part of the valve cover is arranged to be of the step structure, so that the valve cover is clamped between the valve body and the support, the cantilever support of the opening and closing structure can be effectively reduced at the lower end part, and the hardened surface is arranged at the inner wall part contacted with the lifting and closing structure, so that the valve cover has a reliable guiding effect, the opening and closing structure can move up and down more accurately, the use of other guiding structures can be reduced, and the structure is further simplified.

3. According to the regulating valve provided by the invention, the sealing element is arranged between the first step surface and the second step surface, when the valve cover is subjected to moment in the vertical direction, the moment is transmitted to the sealing element, the sealing element is transversely expanded after being pressed and is sealed with the valve cover by adhering to the upper side in the vertical direction, and the lower side of the sealing element is sealed with the valve body, so that the sealing property of the valve shell is ensured, and the connection reliability of the valve cover and the valve body is enhanced.

4. According to the regulating valve provided by the invention, the valve rod and the valve clack are integrally formed, so that the coaxial tolerance is favorably ensured in processing, meanwhile, connecting parts between the valve clack and the valve rod are reduced, and meanwhile, the sealing property between the valve clack and the valve seat is enhanced.

5. According to the regulating valve provided by the invention, the valve seat is in threaded connection with the valve body, the number of used pressing ring parts is reduced, and the position where the inner wall of the valve seat is in contact with the valve clack is processed and hardened to form a sealing surface, so that the sealing performance is enhanced.

6. According to the regulating valve provided by the invention, the sealing assembly is arranged to ensure the sealing between the valve rod and the valve cover, the first backing ring, the packing element, the second backing ring and the pressing element are arranged on the sealing assembly from bottom to top at one time, and the two backing rings are respectively arranged above and below the packing element, so that when the torque applied to the pressing element from the outside is transmitted to the packing element, the packing element is not damaged, the packing element is effectively protected, the service life of the sealing assembly is prolonged, and the sealing performance is ensured; adopt threaded connection between compressing tightly piece and the valve gap, reduce additional connecting elements and space, simplify the structure.

7. According to the regulating valve provided by the invention, a section of straight surface is processed in the pressing piece, then a section of inclined surface is processed, the straight surface can play a role in guiding and supporting the middle position of the valve rod of the cantilever beam after the valve is assembled, and the inclined surface is processed after the straight surface is processed for one section, so that the valve rod is prevented from being blocked due to long straight surface.

8. The regulating valve provided by the invention adopts the fixing components consisting of the clamping block components and the bolts which are arranged oppositely from front to back to fix the driving end of the executing structure and the valve rod together, so that the action of the executing structure is quickly transmitted to the valve rod, and the regulating valve adopts the bolt connection, is convenient and stable in connection and has strong reliability.

9. According to the regulating valve provided by the invention, the switch mark is fixedly arranged on the support of the executing mechanism, the indicating groove is arranged on the first fixing piece fixed with the executing structure, the indicating groove vertically moves along with the vertical lifting of the executing structure, points to different positions indicated by the switch, and feeds back the on-off state of the valve.

10. According to the regulating valve provided by the invention, the limiting plate is arranged on the support, the switch display part is arranged on the limiting plate, the notch is formed in one side, close to the limiting plate, of the fixing assembly, the position change of the limiting plate relative to the notch in the vertical direction is realized when the driving end of the actuating mechanism drives the opening and closing structure to ascend and descend, the vertical movement of the limiting actuating mechanism is limited, the actuating structure and the opening and closing structure are prevented from rotating in the movement, and the loosening of fastening and the inaccurate regulation and control in the regulating valve are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a regulator valve provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of a valve flap and valve seat connection provided in an embodiment of the present invention;

FIG. 4 is a cross-sectional schematic view of a valve seat provided in an embodiment of the present invention;

FIG. 5 is a schematic top view of a valve seat provided in an embodiment of the present invention;

FIG. 6 is a cross-sectional schematic view of a compression member provided in an embodiment of the present invention;

FIG. 7 is a schematic top view of a compression member provided in an embodiment of the invention;

FIG. 8 is a schematic front view of a securing assembly provided in an embodiment of the invention;

FIG. 9 is a schematic top view of a securing assembly provided in an embodiment of the invention;

description of reference numerals:

1-a valve body; 11-a first mounting surface; 121-a first mating face; 122 — a first step surface; 123-a second mating face; 13-a first cavity; 14-a second cavity;

2-valve cover; 21-a clamping part; 211-a second mounting surface; 212-a third mating face; 213-a second step surface; 214-a fourth mating face; 22-a mounting cavity;

3-an opening and closing structure; 31-a valve stem; 32-a valve flap;

4-an actuator; 41-an execution structure; 42-a scaffold; 421-switch display part; 422-a stop;

5-a linking structure;

6-a seal;

7-a valve seat; 71-a guide surface; 72-mounting groove; 73-sealing face;

8-a sealing assembly; 81-elements of packing; 82, pressing pieces; 821-straight surface; 822-a bevel; 83-a first grommet; 84-a second grommet;

9-a fixed component; 91-a first fixture; 92-a second fixture; 93-a connector; 94-an indication part; 95-notch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

With reference to fig. 1 to 9, the present embodiment provides a regulator valve, including:

the valve comprises a valve body 1, a valve cover 2, an opening and closing structure 3 and an actuating mechanism 4, wherein the valve body 1 is provided with a first mounting surface 11, the first mounting surface 11 is recessed from outside to inside to form a recessed part, and the valve body 1 further comprises a first cavity 13 and a second cavity 14 which are suitable for medium circulation; the valve cover 2 is provided with a clamping portion 21, the clamping portion 21 is matched with the concave portion, the clamping portion 21 is provided with a second mounting surface 211, and the second mounting surface 211 is flush with the first mounting surface 11; the opening and closing structure 3 is slidably arranged on the valve cover 2, one end of the opening and closing structure extends into the valve body 1, and the opening and closing structure 3 separates or communicates the first cavity 13 and the second cavity 14 through lifting to control the opening and closing of the valve; the actuating mechanism 4 comprises an actuating structure 41 and a support 42, the actuating structure 41 is installed on the support 42, a driving end of the actuating structure 41 is connected with the opening and closing structure 3 to drive the opening and closing structure 3 to lift, the support 42 is provided with a limiting surface, and the support 42 is connected with the valve body 1 through the connecting structure 5 to enable the limiting surface to be in limiting contact with the first installation surface 11 and the second installation surface 211.

Specifically, as shown in fig. 1, the valve body 1 includes an inlet channel and an outlet channel through which fluid passes, and an installation opening at an upper end, the first cavity 13 is communicated with the outside through the inlet channel, the second cavity 14 is communicated with the outside through the outlet channel, and the installation opening at the upper end is formed by sinking from outside to inside to form a sinking portion; the valve cover 2 is formed with a through hole for the opening and closing structure 3 to slide through along the axis direction, the valve cover 2 is installed at the installation opening at the upper end of the valve body 1 through the matching of the clamping part 21 and the concave part, namely, the lower end of the valve cover 2 extends into the valve body 1, compared with the case that the valve cover 2 is directly butted with the upper end of the valve body 1, the valve cover 2 has better connection stability, meanwhile, the reduced valve cover 2 can shorten the whole height of the regulating valve and reduce the cost; second installation face 211 and the 11 parallel and level of first installation face of joint portion 21 upper end, spacing face butt of support 42 lower extreme sets up to square flange structure on first installation face 11 and second installation face 211 with cooperating under 1 up end of valve body and the support 42, set up 4 screw holes according to standard processing on the valve body 1, set up corresponding 4 preformed holes on the support 42, be in the same place support 42 and 1 fixed connection of valve body through 4 bolts, the connection is stable, the convenient to detach installation, realize simultaneously that the clamp of valve gap 2 is fixed, need not to connect through other connecting piece 93 between support 42 and the valve gap 2, simplify the structure.

The number of the threaded holes, the prepared holes and the bolts is consistent, and is not limited specifically.

In the embodiment, the actuating mechanism 4 is integrally structured with the actuating structure 41 and the support 42, the support 42 is connected with the valve body 1 through a bolt and presses the valve cover 2, the bolt is acted by a transverse moment in an assembling link and is converted into a vertical moment through a thread between the bolt and the valve body 1, the moment is transmitted to the support 42 of the actuating mechanism 4, and the support 42 presses the valve cover 2 to transmit the moment to the valve cover 2.

The type of the executing mechanism 41 is not specifically limited, and the corresponding executing mechanism 4 may be selected according to the field requirement, and in order to meet the actual situation, the type of the executing mechanism 4 in this embodiment is a straight-stroke mechanism.

For the shape forming of the clamping portion 21, the present embodiment includes two types, the first type is that the cross-sectional dimension of the clamping portion 21 is along the axial direction of the opening and closing structure 3, and has a sudden change part; secondly, the size of the clamping part 21 is gradually changed along the axial direction of the opening and closing structure 3.

When the first type of the clamping portion 21 is formed in this embodiment, in the valve cap 2 formed by extending from the second mounting surface 211 to the side far away from the actuator 4 along the axial direction of the opening and closing structure 3, the cross-sectional dimension of the side far away from the actuator 4 is smaller than the cross-sectional dimension of the side near the actuator 4.

Specifically, as shown in fig. 2, the recess formed in the valve body 1 is provided as a stepped groove including a first mating surface 121, a first stepped surface 122, and a second mating surface 123; correspondingly, the clip portion 21 is formed in a step structure, the clip portion 21 includes a third mating surface 212, a second step surface 213 and a fourth mating surface 214, as shown in fig. 1, the first step surface 122 and the second step surface 213 are disposed in an up-down opposite abutting manner, the first mating surface 121 and the third mating surface 212 are disposed in a clearance fit manner, and the second mating surface 123 and the fourth mating surface 214 are disposed in a clearance fit manner.

Stair structure's setting, not only satisfy with valve gap 2 joint between valve body 1 and support 42, the valve gap 2 of second fitting surface 123 and fourth fitting surface 214 department can effectively reduce the cantilever support of opening and close structure 3, the inner wall part that opening and close structure 3 and contact with the oscilaltion of valve gap 2 lower extreme sets up the sclerosis face simultaneously, valve gap 2 has reliable guide effect, make to open and close structure 3 more for accurate upper and lower action, can reduce simultaneously and use other guide structure, further retrench the structure.

The above-mentioned hardened surface forming method is not specifically limited, and in order to meet the practical requirements, the build-up welding forming is adopted in the embodiment, and the processing is simple.

In this embodiment, the sealing member 6 is disposed between the first step surface 122 and the second step surface 213, the type of the sealing member 6 is not limited, and a gasket is selected in this embodiment to meet the practical requirement; when valve gap 2 received vertical direction moment, moment transmitted sealing member 6, sealing member 6 pressurized back lateral expansion and paste vertical direction upside and valve gap 2 sealed, downside and valve body 1 sealed, guarantee valve housing's leakproofness, reinforcing valve gap 2 and valve body 1's reliability of being connected.

As an alternative embodiment, when the second type of the clamping portion 21 is formed, the cross-sectional dimension of the clamping portion 21 formed by extending from the second mounting surface 211 to the side far away from the actuator 4 along the axial direction of the opening and closing structure 3 is gradually reduced.

Specifically, the clamping portion 21 is provided in a truncated cone structure with a gradually decreasing cross-sectional dimension from top to bottom, such as a truncated cone, a truncated pyramid, or a truncated cone, but is not limited thereto; the recess is shaped as a groove adapted to the snap-in portion 21.

As shown in fig. 1, the opening and closing structure 3 of the present embodiment includes a valve rod 31 and a valve flap 32 that are fixedly connected, and the valve rod 31 and the valve flap 32 adopt an integrated structure, which is beneficial to ensuring coaxial tolerance in processing and reducing connecting parts between the valve flap 32 and the valve rod 31. In addition, the governing valve in this embodiment still includes: the valve seat 7 is installed between the first cavity 13 and the second cavity 14 in the valve body 1, as shown in fig. 3 to 5, the valve seat 7 is arranged on the valve body 1 in a step structure, the valve seat 7 comprises a guide surface 71, an installation groove 72 and a sealing surface 73, the guide surface 71 is a threaded surface located on the outer edge of the valve seat 7 and is in threaded connection with the valve body 1, and the number of used pressing ring parts is reduced; the mounting groove 72 is positioned on the upper end surface of the valve seat 7 and is processed into a cross-shaped rotary tool groove, so that the tool for applying torque when screwing or disassembling the valve seat 7 and the valve body 1 can be conveniently used; the sealing surface 73 is positioned in the valve seat 7 and connected with the valve clack 32 and is suitable for being matched with the valve clack 32 to realize sealing and medium flow regulation, and the position of the sealing surface 73 can be used for increasing a hardened structure according to the use working condition in consideration of material hardness and wear resistance.

In this embodiment, the valve is closed when the valve flap 32 abuts against the valve seat 7, and the valve is opened when the valve flap 32 is spaced from the valve seat 7.

As shown in fig. 1, a mounting cavity 22 is formed in a position, close to the valve rod 31, on the inner wall of the bonnet 2, a sealing assembly 8 is mounted in the mounting cavity 22, the valve rod 31 penetrates through the sealing assembly 8, the sealing assembly 8 is provided with a first backing ring 83, a packing element 81, a second backing ring 84 and a pressing element 82 from bottom to top, wherein the first backing ring 83 and the bonnet 2 are automatically aligned through a processing conical surface, the packing element 81 is mounted above the first backing ring 83, the second backing ring 84 is mounted above the packing element 81 and used for being matched with the pressing element 82 to press the packing element 81 to transmit torque, the pressing element 82 is provided with a pressing sleeve with external threads, an internal thread is arranged at the upper end of the bonnet 2, and the second backing ring 84 is in threaded connection with the pressing element 82 to pre-tighten the internal thread.

Specifically, as shown in fig. 7, the upper end of the pressing member 82 is hexagonal, and is used for applying an external torque to the pressing member 82 during the assembling process, the pressing member 82 receives an external transverse torque, the external transverse torque is converted into a vertical torque through a thread structure and is transmitted to the second backing ring 84, the second backing ring 84 transmits the torque to the packing member 81, and the packing member 81 is deformed and expanded transversely due to the action of the vertical torque, so that the sealing between the packing member 81 and the valve rod 31, the sealing between the packing member 81 and the valve cover 2, and the upper sealing of the parts of the valve cover 2 are ensured.

In addition, as shown in fig. 6, a section of straight surface 821 is machined in the pressing member 82, then a section of inclined surface 822 is machined, the straight surface 821 can play a role in guiding and supporting the middle position of the cantilever beam valve rod 31 after the valve is assembled, the inclined surface 822 is machined after the straight surface 821 is machined for one section, the valve rod 31 is prevented from being locked due to the long straight surface 821, and meanwhile due to the special design of the pressing member 82, bolting parts and spaces between the conventional valve cover 2 and the pressing member 82 are reduced.

As shown in fig. 8 and fig. 9, the regulating valve provided in this embodiment further includes a fixing assembly 9 at a connection between the actuating structure 41 and the valve rod 31, for fixing the driving end of the actuating structure 41 and the valve rod 31, and the fixing assembly 9 is configured as a clamping block assembly, and specifically includes: front and back relatively set up first mounting 91 and second mounting 92 in the drive end of executive structure 41 and valve rod 31 junction both sides, and connecting piece 93, be provided with first fixed orifices on the first mounting 91, be provided with the second fixed orifices on the second mounting 92, connecting piece 93 detachably wears to establish and installs in first fixed orifices and second fixed orifices, be connected first mounting 91 with second mounting 92 and then with the drive end of executive structure 41 and valve rod 31 fixed together, make the action of executive structure 41 transmit to valve rod 31 fast, connecting piece 93 adopts the bolt, convenient and stable connection, high reliability.

Specifically, the driving end of the actuating structure 41 is a push rod, and push rod threads are formed on the upper half portions of the first fixing piece 91 and the second fixing piece 92, and valve rod 31 threads are formed on the lower half portions of the first fixing piece and the second fixing piece, and are respectively connected with the driving end push rod and the valve rod 31, so that the connection between the push rod of the actuating mechanism 4 and the valve rod 31 is realized, the torque of the actuating structure 41 is transmitted to the opening and closing structure 3, and the opening and closing actions of the valve are controlled. A gap is reserved between the threads of the push rod and the threads of the valve rod 31, so that abrasion is reduced, the connection reliability is enhanced, and the service life of the valve is prolonged. Two first fixing holes processed on the front surface of the first fixing member 91 are through holes suitable for the connecting member 93 to pass through, and a second fixing hole of the second fixing member 92 is a threaded hole for the connecting member 93 to be selected and fastened.

In this embodiment, the bracket 42 of the actuator 4 may be provided with a switch display portion 421, and the first fixing member 91 is provided with an indication portion 94 on a side close to the switch display portion 421, so that when the actuator 41 acts, the indication portion 94 cooperates with the opening/closing mark of the switch display portion 421 to indicate the valve opening/closing state along with the vertical movement of the first fixing member 91.

Of course, the indication portion 94 may be disposed on the second fixing member 92, as long as it can cooperate with the switch display portion 421 on the bracket 42 to feed back the valve switch state.

The type of the indicating portion 94 in this embodiment is not particularly limited, and in order to be practical, the indicating portion 94 in this embodiment is formed into an indicating groove by machining, so that the forming is stable and reliable.

As shown in fig. 1 and 8, a stopper 422 is provided on the bracket 42 of the actuator 4, and the switch display portion 421 is provided on the stopper 422; the fixed component 9 is formed with a notch 95 matched with the limiting part 422 at one side close to the limiting part 422, when the driving end of the executing mechanism 4 drives the opening and closing structure 3 to ascend and descend, the limiting part 422 has position change in the vertical direction relative to the notch 95, the executing mechanism 4 is limited in vertical movement, the executing structure 41 and the opening and closing structure 3 are prevented from rotating in movement, and loosening in fastening and inaccurate adjustment control inside the adjusting valve are avoided.

The assembly steps of the regulating valve provided in this embodiment are as follows:

s1: screwing the valve seat 7 into the valve body 1 through a screwing tool and fastening;

s1: the valve rod 31 passes through a middle through hole of the valve cap 2, the first backing ring 83, the packing element 81 and the second backing ring 84 are sequentially placed in the installation cavity 22 of the valve cap 2, and the valve rod is pre-tightened by the threads between the pressing element 82 and the valve cap 2.

S1: the sealing member 6 is put on the first step surface 122 of the recess processed by the valve body 1, the assembled valve cover 2 assembly is put on the valve body 1, the actuating mechanism 4 is pressed on the valve cover 2, the actuating mechanism 4 and the valve body 1 are fastened and connected by the connecting member 93 through bolts, and the bolts are pre-tightened.

S1: the actuator 4 is operated to output force to push the valve rod 31 and the valve seat 7 to be sealed, meanwhile, a middle cavity bolt between the support 42 and the valve body 1 is fastened, the fixing assembly 9 is locked, and the installation is completed.

When the valve or change the valve rod 31 part of regulation need be disassembled, directly disassemble between and the valve body 1 between connection structure 5, the lumen bolt promptly takes out valve upper portion from the pipeline, according to the demand replacement part or disassemble fixed subassembly 9 once more and change valve gap 2 seal assembly 8 etc..

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A regulator valve, comprising:

the valve body (1), a first mounting surface (11) is arranged on the valve body (1), a concave part is recessed on the first mounting surface (11) from outside to inside, and the valve body (1) further comprises a first cavity (13) and a second cavity (14) suitable for medium circulation;

the valve cover (2), the valve cover (2) is provided with a clamping portion (21), the clamping portion (21) is matched with the recessed portion, the clamping portion (21) is provided with a second mounting surface (211), and the second mounting surface (211) is flush with the first mounting surface (11);

the opening and closing structure (3) is slidably arranged on the valve cover (2), one end of the opening and closing structure extends into the valve body (1), and the opening and closing structure (3) separates or communicates the first cavity (13) and the second cavity (14) through lifting so as to control the opening and closing of the valve;

the actuating mechanism (4) comprises an actuating structure (41) and a support (42), the actuating structure (41) is installed on the support (42), and a driving end of the actuating structure (41) is connected with the opening and closing structure (3) to drive the opening and closing structure (3) to lift; the support (42) is provided with a limiting surface, and the support (42) is connected with the valve body (1) through a connecting structure (5) so that the limiting surface is in limiting contact with the first mounting surface (11) and the second mounting surface (211).

2. The regulating valve according to claim 1, wherein in the valve cover (2) formed by extending the second mounting surface (211) to the side away from the actuator (4) along the axial direction of the opening and closing structure (3), the cross-sectional dimension of the side away from the actuator (4) is smaller than the cross-sectional dimension of the side close to the actuator (4).

3. The regulator valve according to claim 2, wherein the recess is shaped as a stepped groove, the recess comprising: a first mating surface (121), a first step surface (122), and a second mating surface (123); joint portion (21) shaping is the stair structure, joint portion (21) include: a third mating surface (212), a second step surface (213), and a fourth mating surface (214);

the first step surface (122) and the second step surface (213) are arranged in an opposite abutting mode, the first matching surface (121) and the third matching surface (212) are arranged in a matched mode, and the second matching surface (123) and the fourth matching surface (214) are arranged in a matched mode.

4. The regulator valve according to claim 3, further comprising:

a seal (6), the seal (6) being disposed between the first step surface (122) and the second step surface (213).

5. The regulating valve according to claim 1, characterized in that the cross-sectional dimension of the clamping portion (21) formed by extending from the second mounting surface (211) to the side away from the actuating mechanism (4) is gradually reduced along the axial direction of the opening and closing structure (3).

6. The regulating valve according to claim 5, characterized in that the clamping portion (21) is provided as a table structure, and the recess is shaped as a groove adapted to the clamping portion (21).

7. The regulating valve according to any one of claims 1-6, characterized in that the opening and closing structure (3) comprises a fixedly connected valve stem (31) and flap (32);

the governing valve still includes: the valve seat (7) is installed between the first cavity (13) and the second cavity (14) in the valve body (1), the valve seat (7) comprises a guide surface (71), an installation groove (72) and a sealing surface (73), and the guide surface (71) is located on the outer edge of the valve seat (7); the mounting groove (72) is positioned on the upper end surface of the valve seat (7) and is suitable for being matched with a tool; the sealing surface (73) is positioned at the position where the inner wall of the valve seat (7) is contacted with the valve clack (32) and is suitable for being matched with the valve clack (32) to realize sealing and medium flow regulation;

the valve flap (32) has a closed state in which it abuts against the valve seat (7) to close the valve and an open state in which it is spaced from the valve seat (7) to open the valve.

8. The regulating valve according to claim 7, wherein the valve cover (2) is formed with a mounting cavity (22) at a position close to the valve stem (31), the mounting cavity (22) is internally provided with a sealing assembly (8), and the sealing assembly (8) comprises:

a packing (81), the packing (81) being disposed between the valve stem (31) and the valve cap (2);

the pressing piece (82) is installed on the packing piece (81), and the pressing piece (82) is matched with the valve cover (2) to press the packing piece (81);

a first backing ring (83) and a second backing ring (84), wherein the first backing ring (83) is installed between the bottom end of the installation cavity (22) and the packing element (81), and the second backing ring (84) is installed between the packing element (81) and the pressing element (82).

9. The regulator valve according to claim 8, further comprising a fixing assembly (9) disposed at a position where the actuating end of the actuating structure (41) is connected to the valve stem (31) and adapted to fixedly connect the actuating end of the actuating structure (41) to the valve stem (31), the fixing assembly (9) comprising:

the first fixing piece (91) and the second fixing piece (92) are relatively fixedly arranged on two sides of the joint of the driving end of the execution structure (41) and the valve rod (31), a first fixing hole is formed in the first fixing piece (91), and a second fixing hole is correspondingly formed in the second fixing piece (92);

and the connecting piece (93) is detachably arranged in the first fixing hole and the second fixing hole in a penetrating way and is suitable for connecting the first fixing piece (91) and the second fixing piece (92) so as to fix the driving end of the execution structure (41) and the valve rod (31).

10. The regulating valve according to claim 9, wherein a switch display portion (421) is arranged on the bracket (42) of the actuator (4), an indicating portion (94) is arranged on one side of the first fixing member (91) and/or the second fixing member (92) close to the switch display portion (421), and the indicating portion (94) and the switch display portion (421) are adapted to cooperate to indicate the on-off state of the valve when the opening and closing structure (3) is lifted and lowered.

11. The regulating valve according to claim 10, wherein a limiting member (422) is provided on the bracket (42) of the actuator (4), and the switch display portion (421) is provided on the limiting member (422);

fixed subassembly (9) be close to one side shaping of locating part (422) have with locating part (422) matched with notch (95) actuating mechanism's (4) drive when opening and close structure (3) lift, locating part (422) slide in notch (95) are suitable for spacingly actuating mechanism (4) vertical movement.