CN212718028U

CN212718028U - Stop valve

Info

Publication number: CN212718028U
Application number: CN202021358278.3U
Authority: CN
Inventors: 陈定余; 陈郎; 李学州; 唐大春
Original assignee: Zhejiang Legang Mining Industry Machinery Co ltd
Current assignee: Zhejiang Legang Mining Industry Machinery Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-16
Anticipated expiration: 2030-07-10

Abstract

The application relates to a stop valve, which belongs to the technical field of valves and comprises a valve body, wherein an oil inlet cavity and an oil outlet cavity are arranged in the valve body, a first through hole communicated with the oil inlet cavity and the oil outlet cavity is arranged in the oil outlet cavity, all be provided with filtering component in the oil inlet of oil feed chamber and the oil outlet of oil cavity, filtering component includes filter screen and ring cover, the ring channel has all been seted up along the axis direction to the inner wall of oil inlet and the inner wall of oil-out, the filter screen is located the ring channel and cooperates with the ring channel butt, the ring cover stops the filter screen, the side that the filter screen was kept away from to the ring cover all flushes with the side of the oil inlet of valve body and the side of oil-out, all be provided with the filtering component that can filter impurity at the oil inlet and the oil-out of stop valve in this application, impurity has been reduced to the influence of the inside leakproofness of stop.

Description

Stop valve

Technical Field

The application relates to the technical field of valves, in particular to a stop valve.

Background

The stop valve is a tool which makes the sealing surface of the valve clack and the sealing surface of the valve seat tightly fit by the pressure of a valve rod to prevent medium from flowing, belongs to a forced sealing valve and is one of the most widely used valves.

The existing stop valve is usually directly communicated in a pipeline, and the interior of the stop valve is rarely provided with a structure capable of filtering impurities in oil.

The above related technical solutions have the following drawbacks: because often contain impurity in the fluid, impurity can influence stop valve inner structure's leakproofness, shortens stop valve's life.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence of impurity to the inside leakproofness of stop valve, prolonged the life of stop valve, this application provides a stop valve.

The application provides a stop valve adopts following technical scheme: the utility model provides a stop valve, includes the valve body, has seted up oil feed chamber and oil outlet chamber in the valve body, and the first through-hole of intercommunication oil feed chamber and oil outlet chamber is seted up to the oil outlet chamber, all be provided with filter assembly in the oil feed of oil feed chamber and the oil outlet of oil outlet chamber, filter assembly includes filter screen and ring cover, and the ring channel has all been seted up along the axis direction to the inner wall of oil inlet and the inner wall of oil-out, and the filter screen is located the ring channel and cooperates with the ring channel butt, and the ring cover backstops the filter screen, and the side that the filter screen was kept away from to.

By adopting the technical scheme, when the stop valve is communicated, oil flows through the oil inlet cavity, the first through hole and the oil outlet cavity in sequence, then the stop valve is discharged, the first through hole is cut off, the stop valve can be closed, and the oil stops flowing; the filter screen can filter impurities in the oil, so that the influence of the impurities on the sealing property of the interior of the stop valve is reduced, and the service life of the stop valve is prolonged; after the stop valve is installed in a hydraulic pipeline, the pipeline side walls connected with two ends of the stop valve are butted against the ring sleeve in the axial direction, so that the ring sleeve is limited, and the ring sleeve is used for limiting the filter screen; when the filter screen is blocked and needs to be cleaned or replaced, the stop valve is detached from the hydraulic pipeline, the ring sleeve and the filter screen are sequentially taken out from the annular groove, the cleaned filter screen or a new filter screen is installed back into the annular groove, the ring sleeve is installed back into the annular groove, and finally the stop valve is installed back into the hydraulic pipeline.

Preferably: the filter screen has been seted up a plurality of filtration holes, and the filter screen deviates from the inside one side of valve body and has set firmly the pull ring.

Through adopting above-mentioned technical scheme, when demolising the filter screen or installing the filter screen, can take out the filter screen from the ring channel or install the filter screen to the ring channel inside with the help of the pull ring more easily.

Preferably: the inner wall of the ring sleeve is provided with an arc groove.

By adopting the technical scheme, when the ring sleeve is detached or installed, the ring sleeve can be taken out from the annular groove or installed in the annular groove more easily by virtue of the arc groove.

Preferably: the valve body is provided with a second through hole communicated with the oil inlet cavity, the second through hole is opposite to the first through hole, the second through hole is internally and threadedly connected with a valve sleeve, the valve sleeve comprises a connecting part and a supporting part, the connecting part is in threaded connection with the inner wall of the second through hole, the valve sleeve is internally and threadedly connected with a valve rod, one end of the valve rod is in butt fit with the first through hole, the other end of the valve rod, which is far away from the first through hole, is fixedly connected with a rotating part, the rotating part is in threaded connection with the valve sleeve.

By adopting the technical scheme, the valve body supports the valve sleeve through the threaded connection between the connecting part and the inner wall of the second through hole, and the fixed connection between the valve body and the valve sleeve is realized through the threaded connection between the connecting part and the valve body; the valve sleeve is connected with the thread of the rotating part through the connecting part to support the valve rod, and the valve sleeve is matched with the upper surface of the supporting part through the abutting joint of the lower surface of the rotating part to further support the valve rod; the valve rod can reciprocate in the second through-hole after the valve barrel internal rotation, and the break-away or the butt of control valve rod and first through-hole can control the break-make of stop valve.

Preferably: the supporting part is on a parallel with the inner wall of the valve sleeve axis trend and is provided with a clamping groove, a sealing ring is matched with the clamping in the clamping groove and comprises a clamping portion and a sealing portion, and the clamping portion is matched with the clamping groove in a clamping mode.

By adopting the technical scheme, the clamping part is clamped and matched with the clamping groove to support and limit the sealing ring, so that the possibility that the sealing ring falls off from the valve sleeve is reduced; the sealing ring increases the sealing performance of the rotating fit position of the valve sleeve and the valve rod.

Preferably: the valve rod is kept away from the one end rigid coupling of rotation portion and has the valve clack of hemisphere shape, and valve clack and first through-hole butt cooperation.

By adopting the technical scheme, the valve clack is separated from the first through hole, the oil inlet cavity is communicated with the oil outlet cavity, and the stop valve is communicated; the valve clack is abutted against the first through hole, the oil inlet cavity and the oil outlet cavity are communicated and cut off, and the stop valve is disconnected.

Preferably: the butt joint of the first through hole and the valve clack is in an inwards concave spherical shape.

Through adopting above-mentioned technical scheme, the first through-hole of the spherical shape of indent has increased the area of contact of first through-hole and valve clack, has increased the leakproofness of valve clack and first through-hole butt cooperation department.

Preferably: the upper surface of the rotating part is provided with a clamping groove.

Through adopting above-mentioned technical scheme, when need to twist the valve rod, need insert the joint recess with the help of the spanner in, rotate the spanner and just can twist the valve rod, reduced the valve rod by wrong the possibility of twisting or intentionally artificial twisting.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the filtering component, the influence of impurities on the sealing property of the interior of the stop valve is reduced, and the service life of the stop valve is prolonged;

2. by arranging the sealing ring, the sealing performance of the rotary matching part of the valve sleeve and the valve rod is improved by the sealing ring;

3. through setting up first through-hole and valve clack butt cooperation department into the spherical shape of indent, increased the area of contact of first through-hole and valve clack, increased the leakproofness of valve clack and first through-hole butt cooperation department.

Drawings

FIG. 1 is a cross-sectional view of a shut-off valve in an embodiment of the present application;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure, 1, a valve body; 11. an oil inlet cavity; 111. an oil inlet; 12. an oil outlet cavity; 121. an oil outlet; 122. a first through hole; 13. an annular groove; 14. a second through hole; 2. a filter assembly; 21. filtering with a screen; 211. a filtration pore; 212. a pull ring; 22. sleeving a ring; 221. an arc groove; 3. a valve housing; 31. a support portion; 32. a connecting portion; 311. a clamping groove; 4. a seal ring; 41. a sealing part; 42. a clamping part; 5. a valve stem; 51. a rotating part; 52. clamping the groove; 53. and the valve clack.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

Referring to fig. 1, for the stop valve that this application discloses, including valve body 1, valve barrel 3, valve rod 5 and filtering component 2, valve barrel 3 is located 1 inside and with 1 threaded connection of valve body, valve rod 5 is located 1 inside and with 3 threaded connection of valve barrel of valve body, valve body 1 includes oil feed chamber 11 and oil outlet chamber 12, oil feed chamber 11 sets up to oil inlet 111 with the junction of external pipeline, oil outlet chamber 12 sets up to oil-out 121 with the junction of external pipeline, filtering component 2 is fixed to be set up in oil inlet 111 and oil-out 121 of valve body 1.

Referring to fig. 1, the oil outlet chamber 12 is provided with a first through hole 122 for communicating the oil inlet chamber 11 and the oil outlet chamber 12, oil enters the oil inlet chamber 11 through the oil inlet 111, enters the oil outlet chamber 12 through the first through hole 122, and finally flows out of the stop valve through the oil outlet 121, and the on-off of the first through hole 122 is controlled to control the on-off of the oil flow.

Referring to fig. 1, the valve body 1 is provided with a second through hole 14 communicated with the oil inlet cavity 11, the second through hole 14 is internally threaded with a valve sleeve 3, the valve sleeve 3 comprises a connecting portion 32 and a supporting portion 31, the connecting portion 32 is in threaded connection with the inner wall of the second through hole 14, and the supporting portion 31 is located at one end of the connecting portion 32 close to the inside of the valve body 1.

Referring to fig. 1, a valve rod 5 is connected to the valve sleeve 3 through an internal thread, a rotating portion 51 located inside the valve sleeve 3 is fixedly connected to one end of the valve rod 5, the rotating portion 51 is in threaded connection with the valve sleeve 3, the lower surface of the rotating portion 51 is in abutting fit with the upper surface of the supporting portion 31, and the supporting portion 31 is in rotating fit with the valve rod 5; clamping grooves 52 are formed in one end, perpendicular to the axis of the valve rod 5, of the rotating portion 51, the valve rod 5 can be screwed by a wrench matched with the clamping grooves 52, and the on-off of the first through hole 122 is controlled.

Referring to fig. 1, the valve rod 5 penetrates through the valve sleeve 3, the other end of the valve rod 5, which is far away from the rotating portion 51, is fixedly connected with a hemispherical valve flap 53, the valve flap 53 is in butt fit with the first through hole 122, the butt fit or separation of the valve flap 53 and the first through hole 122 can control the on-off of the stop valve, the first through hole 122 at the butt fit position of the valve flap 53 is set to be a concave spherical surface shape, the contact area between the valve flap 53 and the first through hole 122 is increased, and the sealing performance at the butt fit position of the valve flap 53 and the first through hole 122 is increased.

Referring to fig. 1 and 2, joint groove 311 has been seted up to the inner wall that supporting part 31 is on a parallel with valve barrel 3 axis, joint cooperation has sealing washer 4 in the joint groove 311, sealing washer 4 includes sealing 41 and joint portion 42, joint portion 42 and the cooperation of joint groove 311 joint, joint portion 42 can carry on spacingly and support to sealing washer 4 with the joint cooperation of joint groove 311, sealing 41 cooperates with the outer wall butt of valve rod 5, sealing washer 4 can increase the leakproofness of valve rod 5 and supporting part 31 normal running fit department.

Referring to fig. 1, an annular groove 13 is formed in the valve body 1 from an oil inlet 111 of the valve body 1, the same annular groove 13 is formed in the valve body 1 from an oil outlet 121 of the valve body 1, the same filtering assemblies 2 are fixedly arranged in the two annular grooves 13, each filtering assembly 2 comprises a filtering net 21 and an annular sleeve 22, the filtering net 21 is provided with a plurality of filtering holes 211, the filtering net 21 is located at the bottom of the annular groove 13, the filtering net 21 is in butt fit with the annular groove 13, a pull ring 212 is fixedly connected to one side of the filtering net 21, which is far away from the interior of the valve body 1, and the filtering net 21 can; the ring sleeve 22 is located in the annular groove 13 and is in butt fit with the annular groove 13, the ring sleeve 22 stops the filter screen 21, the side, far away from the inside of the valve body 1, of the ring sleeve 22 is flush with the side of the valve body 1, the inner wall of the ring sleeve 22 is provided with the arc groove 221, and the ring sleeve 22 can be easily taken out of the annular groove 13 through the arc groove 221.

The implementation principle of the embodiment is as follows: when the stop valve needs to be switched on, a wrench is inserted into the clamping groove 52, the valve rod 5 is unscrewed by the wrench, the valve rod 5 drives the valve clack 53 to be separated from the first through hole 122, the oil inlet cavity 11 is switched on with the oil outlet cavity 12, and oil can flow from the oil inlet cavity 11 to the oil outlet cavity 12 and flow out of the stop valve; when the flow of oil in the hydraulic pipeline needs to be cut off, the valve rod 5 is screwed by virtue of a wrench, so that the valve clack 53 is tightly abutted with the first through hole 122, the oil inlet cavity 11 is disconnected from the oil outlet cavity 12, the oil is cut off in the oil inlet cavity 11, and the oil stops flowing; the filtering assemblies 2 in the oil inlet 111 and the oil outlet 121 can filter impurities in oil, so that the content of the impurities entering the valve body 1 is reduced, the influence of the impurities on the sealing property of the interior of the stop valve is reduced, and the service life of the stop valve is prolonged; when the screen 21 is clogged and needs to be cleaned or replaced, the connection between the shut-off valve and the pipe is removed, the collar 22 is removed from the annular groove 13 by means of the arc groove 221, and the screen 21 is removed from the annular groove 13 by means of the pull ring 212.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a stop valve, includes valve body (1), offers oil feed chamber (11) and goes out oil chamber (12) in valve body (1), goes out oil chamber (12) and sets up first through-hole (122) that communicate oil feed chamber (11) and go out oil chamber (12), its characterized in that: the oil inlet (111) of the oil inlet cavity (11) and the oil outlet (121) of the oil outlet cavity (12) are internally provided with a filtering component (2), the filtering component (2) comprises a filter screen (21) and a ring sleeve (22), the inner wall of the oil inlet (111) and the inner wall of the oil outlet (121) are provided with an annular groove (13) along the axis direction, the filter screen (21) is positioned in the annular groove (13) and is in butt fit with the annular groove (13), the ring sleeve (22) stops the filter screen (21), and the side face, far away from the filter screen (21), of the ring sleeve (22) is flush with the side face of the oil inlet (111) and the side face of the oil outlet (.

2. A shut-off valve as claimed in claim 1, wherein: a plurality of filtration holes (211) have been seted up in filter screen (21), and one side that filter screen (21) deviates from valve body (1) inside has set firmly pull ring (212).

3. A shut-off valve as claimed in claim 1, wherein: an arc groove (221) is formed in the inner wall of the ring sleeve (22).

4. A shut-off valve as claimed in claim 1, wherein: second through-hole (14) with oil feed chamber (11) intercommunication is seted up in valve body (1), second through-hole (14) are just to first through-hole (122), second through-hole (14) female connection has valve barrel (3), valve barrel (3) are including connecting portion (32) and supporting part (31), the inner wall threaded connection of connecting portion (32) and second through-hole (14), valve barrel (3) female connection has valve rod (5), the one end and the first through-hole (122) butt cooperation of valve rod (5), the other end rigid coupling that first through-hole (122) was kept away from in valve rod (5) has rotation portion (51), rotation portion (51) and valve barrel (3) threaded connection, the lower surface of rotation portion (51) and the upper surface butt of supporting part (31).

5. A shut-off valve as claimed in claim 4, wherein: supporting part (31) are on a parallel with the inner wall of valve barrel (3) axis trend and have been seted up joint groove (311), and joint cooperation has sealing washer (4) in joint groove (311), and sealing washer (4) are including joint portion (42) and sealing part (41), joint portion (42) and joint groove (311) joint cooperation.

6. A shut-off valve as claimed in claim 4, wherein: one end, far away from the rotating part (51), of the valve rod (5) is fixedly connected with a hemispherical valve clack (53), and the valve clack (53) is in butt fit with the first through hole (122).

7. A shut-off valve as claimed in claim 6, wherein: the abutting joint of the first through hole (122) and the valve clack (53) is in an inwards concave spherical shape.

8. A shut-off valve as claimed in claim 4, wherein: the upper surface of the rotating part (51) is provided with a clamping groove (52).