CN213145392U

CN213145392U - Stop valve

Info

Publication number: CN213145392U
Application number: CN202021572469.XU
Authority: CN
Inventors: 竺旭曙; 彭宇; 何通
Original assignee: Ningbo Bolev Hydraulics Co ltd
Current assignee: Ningbo Bolev Hydraulics Co ltd
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2021-05-07
Anticipated expiration: 2030-08-01

Abstract

The utility model relates to a stop valve, including the valve body and rotate set up in the handle of valve body outer end, connecting channel has been seted up at the valve body middle part, connecting channel one end is the entering end, and the other end is for letting out the end, the connecting channel internal rotation be provided with the valve block that connecting channel opened and closed, the valve block is being close to the installation annular has been seted up to the week side of entering end, the embedded sealing washer that is equipped with of installation annular, the periphery side butt of sealing washer in the connecting channel inner wall. The sealing device has the characteristics of low production cost, better sealing property and the like.

Description

Stop valve

Technical Field

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

Background

At present, a stop valve, also called a stop valve, is the most widely used valve, and is popular because of small friction force between sealing surfaces in the opening and closing process, durability, small opening height, easy manufacture, convenient maintenance, and suitability for medium and low pressure as well as high pressure.

The stop valve is an extremely important cut-off valve, the sealing of the stop valve is realized by applying torque to a valve rod, and the valve rod applies pressure to a valve clack in the axial direction, so that a sealing surface of the valve clack is tightly attached to a sealing surface of a valve seat, and the leakage of a medium along a gap between the sealing surfaces is prevented.

Prior art is shown as figure 7 and figure 8, the stop valve middle part is interface channel 3, and the stop valve is connected with valve block 6 at 3 internal rotations of interface channel, and sealing washer 18 has all been inlayed at valve block 6 both ends, and the side end rotation is provided with handle 2 on the stop valve, and handle 2 is connected in the side of valve block 6 through pivot 10 for pivoted valve block 6 is with interface channel 3 shutoff, and the sealing washer 18 at both ends seals up the gap between valve block 6 and the interface channel 3, reduces the seepage of liquid.

The above prior art solutions have the following drawbacks: the shut-off valve is usually applied to shut off the flow of liquid, so one end of the shut-off valve usually bears a large pressure, while the other end usually has no pressure, and the two ends of the valve plate are provided with sealing rings, which actually play a role in sealing the sealing ring at the high-pressure end, and the two sealing rings increase the production cost without having a large actual effect.

SUMMERY OF THE UTILITY MODEL

In order to reduce manufacturing cost, this application provides a stop valve.

The above object of the present application is achieved by the following technical solutions:

the utility model provides a stop valve, include the valve body and rotate set up in the handle of valve body outer end, connecting channel has been seted up at the valve body middle part, connecting channel one end is the entering end, and the other end is for letting out the end, the connecting channel internal rotation be provided with the valve block that connecting channel opened and closed, the valve block is being close to the week side of entering end has seted up the installation annular, the embedded sealing washer that is equipped with of installation annular, the periphery side butt of sealing washer in the connecting channel inner wall.

Through adopting above-mentioned technical scheme, when ending liquid through this stop valve, install the stop valve in the place that needs used, make the entering end of interface channel be connected to the one end that liquid got into, the end of will letting out is connected to liquid exhaust one end, twist grip makes the valve block take place to rotate, when the axis of valve block is perpendicular with interface channel's axis, the stop valve is in the state of opening, make liquid can follow the entering end and get into, discharge from the end of letting out behind the interface channel, when the axis of valve block is with interface channel's axis coincidence, the sealing washer of valve block week side supports the inner wall in the interface channel tightly, thereby realize sealedly. Become the single-deck sealing washer with dual sealing washer in this scheme, reduced the use of sealing washer quantity when sealing, reduced the processing to the valve block simultaneously for the manufacturing cost of stop valve reduces.

Preferably, a first pressure guide inclined plane is arranged at the side end of the valve plate, close to the inlet end, of the mounting ring groove.

Through adopting above-mentioned technical scheme, the valve block sets up first pressure inclined plane at one side that the mounting ring groove is close to the entering end for when the valve block is ended connecting channel, originally applied to the pressure in the sealing washer outside. Partial application in the outside of sealing washer in the effect on first pressure inclined plane of leading for the sealing washer produces certain deformation, thereby makes the sealing washer more tight with the lateral wall subsides of interface channel, thereby increases sealed effect.

Preferably, the valve plate side end is in the installation annular groove is far away from the entering end and is provided with a second pressure guide inclined plane, and the second pressure guide inclined plane and the inner wall of the connecting channel form a conical annular groove for deformation insertion of the sealing ring.

Through adopting above-mentioned technical scheme, second direction inclined plane and connecting channel inner wall form the toper annular, when the sealing washer produces deformation under the effect of first pressure inclined plane of leading, the sealing washer of deformation is directly pegged graft to the toper annular in, and pressure is big more, and the degree of sealing washer deformation is big more, and the sealing washer is pegged graft to the degree of toper annular more deeply, and sealed effect just also is better, and this scheme is effectual has promoted the sealed effect under the high pressure.

Preferably, the handle is connected to the valve plate through a rotating shaft, an arc-shaped groove is formed in one end, close to the rotating shaft, of the handle, and a positioning column which is inserted into the arc-shaped groove and slides in the inserting mode is arranged at the side end of the valve body in a protruding mode.

Through adopting above-mentioned technical scheme, the arc wall is seted up in the one end that the pivot is connected to the handle for the reference column is pegged graft in the arc wall, and when rotating the handle, the reference column slides in the arc wall, when the reference column supports to connect to arc wall one end, the stop valve is the open mode, when the reference column supports to connect to the other end of arc wall, the stop valve is the closed mode, makes opening of stop valve and the position of closing more accurate through the reference column, thereby makes things convenient for the use of stop valve.

Preferably, the valve body is provided with an indexing pin on one side of the handle, and a positioning groove for the indexing pin to be inserted is formed in the side end of the handle.

Through adopting above-mentioned technical scheme, this stop valve can not frequent opening and closing when using, be in a state for a long time usually, when the stop valve is in the closure state, the index pin directly pegs graft in the constant head tank to make the stop valve be located at the closure state, can't rotate the handle this moment, this scheme makes the stop valve be the closure state and the index pin peg graft in the constant head tank when, can not touch because of the outside and cause the handle to rotate, cause the stop valve accident to open, make the use of stop valve safer, it is more secure.

Preferably, the valve body is provided with a first mounting hole and a second mounting hole on the periphery side of the connecting passage.

Through adopting above-mentioned technical scheme, the valve body is through fixing the stop valve on the pipeline after passing first mounting hole with the bolt, and the pipeline of the other end passes through the bolt fastening on the second mounting hole, and this scheme makes that the stop valve can be firm be connected with the pipeline at both ends.

Preferably, the first mounting hole and the second mounting hole are coaxial and are countersunk, the second mounting hole and the first mounting hole form a ring table for abutting against the head of the bolt, and the valve body is provided with connecting threads at one end of the second mounting hole far away from the first mounting hole.

Through adopting above-mentioned technical scheme, with first mounting hole and the coaxial setting of second mounting hole, when making stop valve with the pipe connection, penetrate the second mounting hole with the bolt and make the bolt head butt in ring platform department, and the pole portion of bolt wears out first mounting hole and installs with the pipeline, when the piping erection of the stop valve other end, pass the bolt behind the pipeline lug connection in connecting thread department, thereby it is fixed with the pipeline, this scheme is with coaxial seting up first mounting hole and second mounting hole, set up too many holes on the valve body has been reduced, the processing cost of valve body has been reduced on the one hand, on the other hand can not cause the structural strength of valve body to descend because set up too much mounting hole.

Preferably, a screw is arranged at one end, far away from the handle, of the side end of the valve body, the screw penetrates into the connecting channel and is rotatably inserted into the side end of the valve plate, and the screw is coaxial with the rotating axis of the valve plate.

Through adopting above-mentioned technical scheme, set up the screw in the one end of valve body for the rotation of valve block uses pivot and screw as the axle, improves valve block pivoted stability on the one hand, and on the other hand improves the compressive capacity of valve block.

To sum up, the beneficial technical effect of this application does:

1. the sealing rings at two ends of the valve plate are changed into the sealing rings arranged at one end, so that the using number of the sealing rings of the stop valve is reduced, and meanwhile, the machining process of the valve plate is reduced, and the production cost of the stop valve is reduced;

2. the first pressure guide inclined plane and the second pressure guide inclined plane are arranged at two ends of the mounting ring groove, so that the liquid pressure is overlarge, the sealing ring deforms and is embedded into the conical ring groove, and the sealing effect is enhanced;

3. the first mounting hole and the second mounting hole are coaxially arranged to be countersunk, the outer end of the second mounting hole is provided with connecting threads, and therefore when the stop valve is connected with pipelines at two ends, the first mounting hole and the second mounting hole which are countersunk can be connected, so that too many holes are formed in the valve body, the processing cost of the valve body is reduced, and the structural strength of the valve body cannot be reduced due to the fact that too many mounting holes are formed.

Drawings

FIG. 1 is a schematic view of a shut-off valve in an open position;

FIG. 2 is a cut-away view of the shut-off valve taken in the middle line;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic structural view of a valve body;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;

FIG. 6 is a schematic view of the stop valve from another perspective;

FIG. 7 is a schematic diagram of a shut-off valve according to the prior art;

fig. 8 is an enlarged view of fig. 7 at B.

In the figure: 1. a valve body; 2. a handle; 3. a connecting channel; 4. an entrance end; 5. a discharge end; 6. a valve plate; 7. a first mounting hole; 8. a second mounting hole; 9. a ring platform; 10. a rotating shaft; 11. an arc-shaped slot; 12. a positioning column; 13. a limiting seat; 14. an index pin; 15. positioning a groove; 16. a screw; 17. mounting a ring groove; 18. a seal ring; 19. a first pressure guide inclined plane; 20. a second pressure guide inclined plane; 21. a conical ring groove; 22. and connecting threads.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1 and 2, the stop valve comprises a valve body 1 and a handle 2 rotatably arranged at the outer end of the valve body 1, a connecting channel 3 is arranged in the middle of the valve body 1, one end of the connecting channel 3 is an inlet end 4, the other end of the connecting channel is an outlet end 5, and a valve plate 6 is arranged in the connecting channel 3.

Referring to fig. 1 and 5, the valve body 1 is provided with a first mounting hole 7 on the periphery of the connecting channel 3, the axis of the first mounting hole 7 is parallel to the axis of the connecting channel 3, the valve body 1 is provided with a second mounting hole 8 on the outer side of the first mounting hole 7, the second mounting hole 8 is coaxial with the first mounting hole 7, and the second mounting hole 8 and the first mounting hole 7 are countersunk, so that the bottom wall of the second mounting hole 8 forms a ring platform 9.

After the bolt inserts second mounting hole 8, first mounting hole 7 is worn out with the pipe connection in the pole portion of bolt, and the head butt of bolt is on loop platform 9, make the one end of stop valve with the pipe connection, valve body 1 is provided with connecting thread 22 in the one end that first mounting hole 7 was kept away from in second mounting hole 8, make the bolt can pass behind the pipeline directly be connected with connecting thread 22, thereby with the other end of stop valve with the pipe connection, the same reason can be kept away from the one end of second mounting hole 8 at first mounting hole 7 and carry out the same setting with second mounting hole 8, make 1 both ends of valve body all can carry out this kind of mounting means.

Referring to fig. 1 and 2, a rotating shaft 10 is inserted into the side end of a valve body 1 in a rotating mode, one end of the rotating shaft 10 penetrates into the connecting channel 3 in a direction towards the axis of the connecting channel 3, the outer end of the rotating shaft 10 is fixed with a handle 2 through a bolt, the inner end of the rotating shaft 10 is directly inserted into the side end of a valve plate 6, one end of the valve plate 6 is connected with the bolt through a thread, the bolt is directly inserted into the side end of the rotating shaft 10, the handle 2, the rotating shaft 10 and the valve plate 6 are in transmission connection, and when the handle 2 is rotated, the valve plate 6 rotates.

Referring to fig. 1 and 6, the handle 2 has been seted up the arc 11 of waist type at the side that is close to valve body 1 one end, and the arc angle of arc 11 is 90, and the welding of valve body 1 side has a reference column 12, and reference column 12 just pegs graft in arc 11 for when rotating handle 2 to the one end of reference column 12 butt arc 11, valve block 6 is in the state of opening completely, and when rotating to the other end of reference column 12 butt arc 11, valve block 6 will connect passageway 3 and seal.

Valve body 1 passes through the bolt fastening in reference column 12 one side and has spacing seat 13, there is index pin 14 at spacing seat 13 middle part through screw thread horizontally connect, can make index pin 14 move to handle 2 one end under the effect of screw thread through rotating index pin 14, handle 2 is close to the side of 1 one end of valve body and offers the constant head tank 15 that supplies index pin 14 to peg graft, peg graft when constant head tank 15 when index pin 14, valve block 6 is coaxial with interface channel 3, the stop valve is the closed condition this moment.

Referring to fig. 1 and 2, a screw 16 penetrates through the valve body 1 at the end of one side far away from the handle 2 through threads, the screw 16 penetrates through the connecting channel 3 and is rotatably inserted at the side end of the valve plate 6, and the screw 16 is coaxial with the rotating shaft 10, so that the valve plate 6 rotates by taking the screw 16 and the rotating shaft 10 as shafts, and is more stable.

Referring to fig. 2 and 3, when the stop valve is in a closed state, the valve sheet 6 is provided with an installation ring groove 17 on the periphery side close to the inlet end 4, an annular sealing ring 18 is embedded in the installation ring groove 17, the outer side of the sealing ring 18 abuts against the inner wall of the connecting channel 3, the valve sheet 6 is provided with a first pressure guide inclined plane 19 on one side of the installation ring groove 17 close to the inlet end 4, the inner end of the first pressure guide inclined plane 19 is located in the middle of the sealing ring 18, so that the hydraulic pressure directly acts on the sealing ring 18 under the action of the first pressure guide inclined plane 19 to deform the sealing ring 18, the valve plate 6 is provided with a second pressure guide inclined plane 20 at one side of the mounting ring groove 17 far away from the inlet end 4, the second pressure guide inclined plane is higher than the first pressure guide inclined plane 19, the second pressure guide inclined plane 20 and the inner wall of the connecting channel 3 form a tapered ring groove 21, so that the deformed sealing ring 18 can be directly inserted into the conical ring groove 21 for sealing.

The implementation principle of the embodiment is as follows:

when liquid is stopped by the stop valve, a bolt penetrates into the second mounting hole 8 and the head of the bolt is abutted against the annular table 9, the rod part of the bolt penetrates out of the first mounting hole 7 to be mounted with a pipeline, when the pipeline at the other end of the stop valve is mounted, the bolt penetrates through the pipeline and then is directly connected to the connecting thread 22, so that the pipeline is fixed, the inlet end 4 of the connecting channel 3 is connected to one end where the liquid enters, the outlet end 5 is connected to one end where the liquid is discharged, the valve plate 6 is rotated by rotating the handle 2, when the positioning column 12 is abutted against one end of the arc-shaped groove 11, the axis of the valve plate 6 is perpendicular to the axis of the connecting channel 3, at the moment, the stop valve is in an open state, so that the liquid can enter from the inlet end 4 and be discharged from the outlet end 5 after passing through the connecting channel 3, the handle 2 is rotated, so that the positioning column 12 is abutted against the other end of the arc, the sealing ring 18 on the periphery of the valve plate 6 abuts against the inner wall of the connecting channel 3, when the sealing ring 18 deforms under the action of the first pressure guide inclined surface 19 due to the high pressure of liquid, the deformed sealing ring 18 is directly inserted into the conical ring groove 21, the larger the pressure is, the larger the deformation degree of the sealing ring 18 is, the deeper the sealing ring 18 is inserted into the conical ring groove 21, so that sealing is performed, and the indexing pin 14 can be inserted into the positioning groove 15 to be fixed.

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, include valve body (1) and rotate set up in handle (2) of valve body (1) outer end, connect channel (3) have been seted up at valve body (1) middle part, connect channel (3) one end is into end (4), and the other end is for letting out end (5), connect channel (3) internal rotation be provided with valve block (6) that connect channel (3) were opened and were closed, its characterized in that: valve block (6) are being close to the week side of entering end (4) has seted up installation annular (17), embedded sealing washer (18) that is equipped with in installation annular (17), the week side butt of sealing washer (18) in connect passageway (3) inner wall.

2. The shut-off valve of claim 1, wherein: the side end of the valve plate (6) is arranged on a first pressure guide inclined surface (19) of the mounting ring groove (17) close to the inlet end (4).

3. The shut-off valve of claim 2, wherein: valve block (6) side is in installation annular (17) are kept away from it leads pressure inclined plane (20) to get into end (4) and is provided with the second, the second lead press inclined plane (20) with connect channel (3) inner wall forms confession sealing washer (18) deformation conical ring groove (21) of pegging graft.

4. The shut-off valve of claim 1, wherein: the handle (2) is connected with the valve plate (6) through a rotating shaft (10), the handle (2) is close to one end of the rotating shaft (10) and is provided with an arc-shaped groove (11), and the side end of the valve body (1) is convexly provided with a positioning column (12) which is inserted and slides in the arc-shaped groove (11).

5. The shut-off valve of claim 1, wherein: the valve body (1) is provided with an indexing pin (14) on one side of the handle (2), and a positioning groove (15) for the insertion of the indexing pin (14) is formed in the side end of the handle (2).

6. The shut-off valve of claim 1, wherein: the valve body (1) is provided with a first mounting hole (7) and a second mounting hole (8) on the periphery side of the connecting channel (3).

7. The shut-off valve of claim 6, wherein: first mounting hole (7) with second mounting hole (8) are coaxial to be the countersunk head form, second mounting hole (8) with first mounting hole (7) form ring platform (9) that supply the head butt of bolt, valve body (1) is in second mounting hole (8) are kept away from the one end of first mounting hole (7) is provided with connecting thread (22).

8. The shut-off valve of claim 1, wherein: the valve body (1) side is being kept away from one end of handle (2) is provided with screw (16), screw (16) penetrate to connect channel (3) and rotate peg graft in valve block (6) side, screw (16) with valve block (6) axis of rotation is coaxial.