CN216618604U

CN216618604U - High leakproofness prevents shunt valve of leakage

Info

Publication number: CN216618604U
Application number: CN202123055263.7U
Authority: CN
Inventors: 蔡露露
Original assignee: Suzhou Baitai Material Technology Co ltd
Current assignee: Suzhou Baitai Material Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-27
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a high-sealing leakage-proof shunt valve which comprises a valve body, wherein the middle parts of the left side and the lower end of an outer cylindrical surface of the valve body are respectively connected with a first flange plate in an inserting manner, the right side of the valve body is provided with a buffer part, the left part and the right part of the outer cylindrical surface of the buffer part are respectively connected with a connecting pipe and a second flange plate in an inserting manner, the left end of the connecting pipe extends into the valve body, the upper end of the valve body is fixedly connected with an end cover through a bolt, the middle part of the upper end of the end cover is provided with a rotating part, and an inner cavity of the valve body is provided with a baffle plate. According to the high-sealing leakage-proof shunt valve, the PTFE anticorrosive coating is arranged, so that corrosive liquid cannot corrode the valve core, the service life of the valve core is ensured, and the buffering part is arranged, so that irregular water shock wave vibration caused by external water hammer and surge generated by the fluid in a transmission system can be eliminated, and the service life of the valve is ensured.

Description

High leakproofness prevents shunt valve of leakage

Technical Field

The utility model relates to the technical field of shunt valves, in particular to a high-tightness leakage-proof shunt valve.

Background

The shunt valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, is used for controlling the fluid, is a valve used in an extremely complicated automatic control system from a simplest stop valve, has various varieties and specifications, has a nominal diameter from an extremely tiny instrument valve to an industrial pipeline valve with the diameter of 10m, and can be used for controlling the medium such as water, steam, oil products, gas, slurry and the like.

The prior shunt valve has the following disadvantages: 1. the valve core in the existing shunt valve is mostly made of stainless steel, and is easy to corrode by corrosive liquid to cause valve leakage after long-term use, and the sealing ring is easy to age and corrode to cause valve rod leakage after long-term use; 2. most of the existing shunt valves are directly connected with a liquid inlet pipeline, and irregular water shock waves generated by the external water hammer and surge of fluid possibly generated in a transmission system vibrate, so that destructive shock waves are generated, and the service life of the valves is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a high-tightness leakage-proof shunt valve which can effectively solve the problems in the background technology.

In order to realize the purpose, the utility model adopts the technical scheme that:

the utility model provides a high leakproofness prevents shunt valve of leakage, includes the valve body, the outer face of cylinder left side and the lower extreme middle part of valve body all alternate and are connected with first ring flange, the right side of valve body is provided with the buffering part, the outer face of cylinder left part and the outer face of cylinder right part of buffering part alternate respectively and are connected with connecting pipe and second ring flange, the left end of connecting pipe extends to in the valve body, bolt fixedly connected with end cover is passed through to the upper end of valve body, the upper end middle part of end cover is provided with rotating member, the baffle is installed to the inner chamber of valve body, rotating member runs through the lower extreme and the swing joint of baffle of end cover in proper order has the case main part, the inner wall swing joint of case main part and valve body.

Preferably, rotating part includes the screw rod, the screw rod screw thread is installed on the end cover, the screw rod lower extreme extends to in the valve body, the knob is installed to the upper end of screw rod, the fixed dog that has cup jointed in the surface lower part of screw rod, the lower extreme swing joint of dog has the valve rod, the outer face of cylinder upper portion movable sleeve of valve rod is equipped with the spring, the spring is located between dog and the baffle, the outer face of cylinder lower part movable sleeve of valve rod is equipped with four hydrogenated nitrile butadiene rubber sealing rings that are the linear array and distribute, the lower extreme of valve rod run through the lower extreme of baffle and with case main part swing joint.

Preferably, the buffer component comprises a tank body, the upper end of the tank body is connected with a valve pipe in an inserting manner, the inner wall of the tank body is movably connected with a gasket, an anti-seismic spring is jointly connected between the upper end of the gasket and the upper inner wall surface of the tank body, and the left part and the right part of the outer cylindrical surface of the tank body are respectively connected with a connecting pipe and a second flange in an inserting manner.

Preferably, the middle part of the upper end of the baffle is provided with a circular through groove, and the inner wall of the circular through groove is provided with four annular grooves distributed in an annular array.

Preferably, four hydrogenated nitrile rubber sealing rings are respectively positioned in the four annular grooves.

Preferably, the valve core main body comprises a stainless steel layer, and a PTFE anti-corrosion coating is arranged on the outer surface of the stainless steel layer.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the high-sealing leakage-proof shunt valve, the PTFE anticorrosive coating is arranged to ensure that corrosive liquid cannot corrode the valve core, the PTFE anticorrosive coating has the advantages of high temperature resistance, good compactness, low friction coefficient, high insulating strength and the like, and can resist various organic solvents such as acid and alkali, the corrosion resistance of the valve core is further improved, the service life of the valve core is ensured, the hydrogenated nitrile rubber sealing ring is arranged to prevent the liquid from seeping out of the valve rod, the hydrogenated nitrile rubber sealing ring has excellent performances such as high strength, tear resistance, wear resistance, high heat resistance, acid and alkali resistance, and the like, and meanwhile, the four hydrogenated nitrile rubber sealing rings are arranged to further improve the sealing performance of the valve rod and ensure that the liquid cannot leak out of the valve core;

2. according to the high-tightness leakage-proof shunt valve, the buffering component is arranged to eliminate irregular water shock wave vibration caused by external water hammer and surge generated by fluid in a transmission system, when shock waves are transmitted into the tank body, the water shock waves act on the gasket, the gasket moves upwards to compress the anti-seismic spring, and the gasket moves up and down under the triple action of gas with certain pressure, the anti-seismic spring and the irregular water shock waves to form dynamic balance, so that the irregular water shock wave vibration is effectively eliminated, the influence of the water shock wave vibration on the valve is avoided, and the service life of the valve is ensured.

Drawings

FIG. 1 is a schematic view of an overall structure of a high-sealing and leakage-proof diverter valve according to the present invention;

FIG. 2 is a schematic cross-sectional view of a valve body of a high-sealing and leak-proof diverter valve according to the present invention;

FIG. 3 is a schematic diagram of the overall structure of the buffering component of the high-tightness and leak-proof shunt valve according to the present invention;

FIG. 4 is a schematic cross-sectional view of a valve body of a high-sealing leakage-proof shunt valve according to the present invention;

fig. 5 is an enlarged view of the structure at a point a of the high-tightness and leakage-proof shunt valve of the present invention.

In the figure: 1. a valve body; 2. a first flange plate; 3. an end cap; 4. a rotating member; 5. a valve core main body; 6. a buffer member; 7. a connecting pipe; 8. a second flange plate; 9. a baffle plate; 41. a knob; 42. a screw; 43. a stopper; 44. a spring; 45. a valve stem; 46. hydrogenated nitrile rubber seal rings; 61. a tank body; 62. an anti-seismic spring; 63. a gasket; 64. a valve tube; 51. a PTFE anticorrosive coating; 52. a stainless steel layer; 91. an annular groove; 92. a circular through groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

As shown in fig. 1-5, a high leakproofness prevents shunt valve of leakage, including valve body 1, the outer face of cylinder left side and the lower extreme middle part of valve body 1 all alternate and are connected with first ring flange 2, the right side of valve body 1 is provided with buffer unit 6, the outer face of cylinder left part and the outer face of cylinder right part of buffer unit 6 alternate respectively and are connected with connecting pipe 7 and second ring flange 8, the left end of connecting pipe 7 extends to in the valve body 1, bolt fixedly connected with end cover 3 is passed through to the upper end of valve body 1, the upper end middle part of end cover 3 is provided with rotatable parts 4, baffle 9 is installed to the inner chamber of valve body 1, rotatable parts 4 run through the lower extreme of end cover 3 and the lower extreme of baffle 9 in proper order and swing joint case main part 5, case main part 5 and the inner wall swing joint of valve body 1.

Rotating part 4 includes screw rod 42, screw rod 42 threaded mounting is on end cover 3, the screw rod 42 lower extreme extends to in the valve body 1, knob 41 is installed to the upper end of screw rod 42, the fixed dog 43 that has cup jointed in surface lower part of screw rod 42, the lower extreme swing joint of dog 43 has valve rod 45, the outer face of cylinder upper portion activity cover of valve rod 45 is equipped with spring 44, spring 44 is located between dog 43 and the baffle 9, the outer face of cylinder lower part activity cover of valve rod 45 is equipped with four hydrogenated nitrile rubber sealing rings 46 that are linear array and distribute, the lower extreme of valve rod 45 runs through the lower extreme of baffle 9 and with case main part 5 swing joint, hydrogenated nitrile rubber sealing ring 46 is used for preventing that liquid from oozing from valve rod 45.

The buffer component 6 comprises a tank body 61, a valve pipe 64 is inserted and connected to the upper end of the tank body 61, a gasket 63 is movably connected to the inner wall of the tank body 61, an anti-seismic spring 62 is jointly connected between the upper end of the gasket 63 and the inner wall of the tank body 61, the left part and the right part of the outer cylindrical surface of the tank body 61 are respectively inserted and connected with the connecting pipe 7 and the second flange 8, a circular through groove 92 is formed in the middle of the upper end of the baffle 9, four annular grooves 91 distributed in an annular array are formed in the inner wall of the circular through groove 92, four hydrogenated nitrile rubber seal rings 46 are respectively located in the four annular grooves 91, the valve pipe 64 is used for introducing gas into the tank body 61, the buffer component 6 is used for eliminating irregular water shock wave shock caused by external water hammer and surge generated by a transmission system, and the service life of the valve is guaranteed.

The valve core main body 5 comprises a stainless steel layer 52, a PTFE anticorrosive coating 51 is arranged on the outer surface of the stainless steel layer 52, and the PTFE anticorrosive coating 51 is used for avoiding corrosive liquid from corroding the valve core and ensuring that the valve core cannot be damaged.

It should be noted that, the utility model is a high-tightness and leak-proof shunt valve, when in use, gas is introduced into the tank body 1 through the valve pipe 64, the second flange 8 is connected with the liquid inlet pipeline, liquid can enter the tank body 61, in the process, the liquid vibrates in the water hammer and the irregular water shock wave generated by surge generated by the transmission system, when the shock wave is transmitted into the tank body 61, the water shock wave acts on the gasket 63, the gasket 63 moves upwards to compress the anti-shock spring 62, the gasket 63 moves up and down under the triple action of the gas with a certain pressure, the anti-shock spring 62 and the irregular water shock, so as to form a dynamic balance, then the liquid enters the valve body 1 from the connecting pipe 7 and flows out from the two first flanges 2, the corrosive liquid can not corrode the valve core main body 5 by arranging the PTFE anticorrosive coating 51, the PTFE anticorrosive coating 51 has high-temperature resistance, and good corrosion resistance, The compactness is good, the coefficient of friction is low, advantages such as high dielectric strength, but some characteristics such as various organic solvents of anti acid and alkali, the corrosion resistance of case main part 5 is further improved, it has avoided liquid to ooze from valve rod 45 to set up hydrogenated nitrile rubber sealing washer 46, hydrogenated nitrile rubber sealing washer 46 has high strength, tear resistance, wear-resisting, good performance such as resistant high heat and anti acid-base, set up four hydrogenated nitrile rubber sealing washers 46 simultaneously and further improved the leakproofness of valve rod 45 department, when needing to close the valve, rotate knob 41, drive screw rod 42 and dog 43 and rotate downwards, dog 43 drives valve rod 45 and moves downwards, and then compression spring 44, valve rod 45 drives case main part 5 and moves downwards, and then plugs up the liquid of connecting pipe 7 department.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a shunt valve that high leakproofness is prevented leaking, includes valve body (1), its characterized in that: the middle parts of the left side and the lower end of the outer cylindrical surface of the valve body (1) are respectively and alternately connected with a first flange (2), a buffer component (6) is arranged on the right side of the valve body (1), a connecting pipe (7) and a second flange plate (8) are respectively inserted and connected on the left part of the outer cylindrical surface and the right part of the outer cylindrical surface of the buffer component (6), the left end of the connecting pipe (7) extends into the valve body (1), the upper end of the valve body (1) is fixedly connected with an end cover (3) through a bolt, the middle part of the upper end of the end cover (3) is provided with a rotating part (4), the inner cavity of the valve body (1) is provided with a baffle plate (9), the rotating part (4) sequentially penetrates through the lower end of the end cover (3) and the lower end of the baffle plate (9) and is movably connected with a valve core main body (5), and the valve core main body (5) is movably connected with the inner wall of the valve body (1).

2. A high leak tightness and leak resistance diverter valve according to claim 1, wherein: rotating part (4) include screw rod (42), screw rod (42) thread mounting is on end cover (3), screw rod (42) lower extreme extends to in valve body (1), knob (41) are installed to the upper end of screw rod (42), the fixed cover in surface lower part of screw rod (42) has dog (43), the lower extreme swing joint of dog (43) has valve rod (45), the outer face upper portion movable sleeve of cylinder of valve rod (45) is equipped with spring (44), spring (44) are located between dog (43) and baffle (9), the outer face lower part movable sleeve of cylinder of valve rod (45) is equipped with four hydrogenated nitrile rubber sealing rings (46) that are linear array and distribute, the lower extreme of valve rod (45) runs through the lower extreme of baffle (9) and with case main part (5) swing joint.

3. A high leak tightness and leak resistance diverter valve according to claim 2, wherein: buffer unit (6) are including a jar body (61), the upper end interlude of the jar body (61) is connected with valve pipe (64), the inner wall swing joint of the jar body (61) has packing ring (63), be connected with antidetonation spring (62) between the upper end of packing ring (63) and the last internal face of the jar body (61) jointly, the outer face left part of cylinder and the outer face right part of cylinder of the jar body (61) are connected with connecting pipe (7) and second ring flange (8) interlude respectively.

4. A high leak tightness and leak tightness shunt valve according to claim 3, wherein: a circular through groove (92) is formed in the middle of the upper end of the baffle (9), and four annular grooves (91) distributed in an annular array are formed in the inner wall of the circular through groove (92).

5. A high leak tightness and leak resistance diverter valve according to claim 4, wherein: the four hydrogenated nitrile rubber sealing rings (46) are respectively positioned in the four annular grooves (91).

6. A high leak tightness and leak resistance diverter valve according to claim 5, wherein: the valve core main body (5) comprises a stainless steel layer (52), and a PTFE (polytetrafluoroethylene) anticorrosive coating (51) is arranged on the outer surface of the stainless steel layer (52).