CN216768548U

CN216768548U - Welding stop valve

Info

Publication number: CN216768548U
Application number: CN202220385487.XU
Authority: CN
Inventors: 项进博; 项杉杉; 项诗妍
Original assignee: Jingkai Valve Co ltd
Current assignee: Jingkai Valve Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-06-17
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a welding stop valve which comprises a valve body, a valve cover arranged on the valve body, an inlet channel and an outlet channel formed in the valve body, a valve rod arranged in the valve cover and extending into the valve body, and a valve clack arranged on the valve rod, wherein a cage sleeve is arranged in the valve body, a plurality of noise reduction holes are distributed on the cage sleeve, a hand wheel is arranged on the valve rod, the orthographic projection of the inlet channel is positioned on the outer peripheral wall of the cage sleeve, the cage sleeve is circumferentially and rotatably arranged in the valve body, a plurality of linkage grooves are formed in the outer peripheral wall of the cage sleeve, the linkage grooves are circumferentially arranged around the center of the cage sleeve at intervals, a driving ring is rotatably sleeved outside the valve body, and a linkage assembly driving the cage sleeve to rotate is arranged between the driving ring and the linkage grooves. The utility model has the following advantages and effects: the utility model can avoid the blocking phenomenon of the cage sleeve, thereby improving the universality and the practicability of the valve.

Description

Welding stop valve

Technical Field

The utility model relates to a valve, in particular to a welding stop valve.

Background

The shut-off valve is a force-sealed valve, so that when the valve is closed, pressure must be applied to the flap to force the sealing surface from leaking. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod bending can occur.

The existing stop valve weakens the flow impact force of fluid by arranging a cage in a valve body and distributing a plurality of noise reduction holes on the cage so as to achieve the purpose of noise reduction. Because the cleanliness degrees of fluid media in different working conditions are different, when the fluid media contain more impurities, the impurities easily block the noise reduction holes when flowing through the cage sleeve, particularly block one surface of the cage sleeve facing the inflow channel, and finally influence the flow of the media or even cause the blocking. Therefore, the universality and the practicability of the existing stop valve are poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a welding stop valve which can avoid the blocking phenomenon of a cage sleeve so as to improve the universality and practicability of the valve.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a welding stop valve, includes the valve body, sets up in the valve gap of valve body, forms in the runner that advances and go out the runner of valve body, installs in the valve gap and extend into the valve stem in the valve body and set up in the valve clack of valve rod, it has a plurality of holes of making an uproar to fall to be equipped with cage cover, cage cover in the valve body to distribute, be equipped with the hand wheel on the valve rod, the orthographic projection of runner is located the periphery wall of cage cover, cage cover circumferential direction sets up in the valve body, the periphery wall of cage cover is equipped with the linkage groove, the linkage groove is around being provided with a plurality ofly in the centre of a circle interval of cage cover, the external rotation cover of valve body is equipped with the drive ring, be equipped with between drive ring and the linkage groove and drive the cage cover pivoted linkage subassembly.

By adopting the technical scheme, the fluid medium flows towards the peripheral wall of the cage sleeve through the inflow channel and passes through the cage sleeve to achieve the purpose of reducing noise, and impurities in the fluid medium are mainly gathered and blocked at the position of the peripheral wall of the cage sleeve towards the inflow channel. The rotating driving ring is matched with the linkage assembly and the linkage groove to drive the cage to rotate, and the position of the cage blocked by impurities is rotated to the position staggered with the flow inlet channel, so that the blockage can be avoided, and the service life of the valve is prolonged. When the position of the cage sleeve blocked by the impurities is rotated to the other side back to the flow inlet channel, the reverse impact force formed by the impurities at the position blocked by the fluid can play a role in clearing the impurities blocked at the position, so that the blocking phenomenon of the cage sleeve is avoided, and the universality and the practicability of the valve are improved.

Further setting the following steps: including setting up in the linkage hole of valve body and intercommunication drive ring and linkage groove, the linkage hole encircles around extending in the cage cover centre of a circle and forms a rectangular arc, the linkage subassembly sets up in the slide opening of drive ring and towards linkage hole reciprocating motion's gangbar including setting up in the slide opening of drive ring and sliding.

By adopting the technical scheme, the driving linkage rod is inserted into the linkage groove through the linkage hole, then the driving ring is rotated, the driving ring is matched with the linkage groove through the clamping formed by the linkage rod and the linkage groove and is used for driving the cage sleeve to rotate, when the linkage rod rotates to the other end from one end of the linkage hole, the linkage rod is pulled out from the linkage groove, and the cage sleeve is driven to rotate in a one-way mode by repeating the operation to complete the driving operation of the cage sleeve.

Further setting the following steps: the valve body is characterized in that a driving spring for driving the linkage rod to move back to one side of the linkage groove is arranged in the sliding hole, when the driving spring is in an unstressed state, the linkage rod is separated from the linkage groove, one end of the driving spring is fixedly connected with the sliding hole, the other end of the driving spring is fixedly connected with the linkage rod, and a sealing assembly is arranged in the valve body.

Through adopting above-mentioned technical scheme, the motion of drive spring drive gangbar dorsad linkage groove makes it not constitute the linkage with the linkage groove, makes the operation linkage subassembly that the staff can be more convenient control the cage cover, prevents through the sealing member that sets up that the valve from taking place to leak, guarantees sealing stability.

Further setting the following steps: including setting up the packing ring that just is located the cage top between valve body and valve rod, seal assembly is including setting up first sealing washer between valve body and cage periphery wall and setting up the second sealing washer between packing ring and cage, first sealing washer is located linkage hole below, first sealing washer and second sealing washer are graphite material.

Through adopting above-mentioned technical scheme, first sealing washer cooperation second sealing washer is located the both sides in linkage hole respectively to this linkage hole that comes to seal the formation prevents that linkage hole position from taking place to leak. The graphite material has specific excellent self-lubricating property, so that the rotation of the cage sleeve cannot be influenced by the existing first sealing ring and the second sealing ring, and the convenience of operation is ensured.

Further setting the following steps: the packing gasket is fixedly provided with a sealing part extending into the space between the inner peripheral wall of the cage sleeve and the valve rod, the sealing part is respectively abutted against the inner peripheral wall of the cage sleeve and the outer peripheral wall of the valve rod, one end surface of the sealing part, back to the packing gasket, is inwards recessed to form a stress expansion ring groove, and the sealing part is made of elastic materials.

Through adopting above-mentioned technical scheme, thereby medium pressure gets into the outside elastic expansion deformation that takes place of drive atress expansion annular, makes the sealing portion can be inseparabler support tightly in cage and valve rod to reach better sealed effect.

Further setting the following steps: the inner wall of the valve body is provided with a cleaning brush, and the cleaning brush extends into the noise reduction hole.

Through adopting above-mentioned technical scheme, the cage rotates and makes and fall the hole of making an uproar and clearance brush contact, plays better clearance effect to falling the impurity in the hole of making an uproar.

Further setting the following steps: the valve cover is sleeved on the valve body, a split ring is arranged between the valve cover and the valve body, and a locking bolt is arranged between the valve cover and the valve body.

Through adopting above-mentioned technical scheme, it is spacing to open the ring to constitute valve gap and valve body, and the locking bolt who cooperates the setting again locks, realizes the convenient equipment of valve gap and valve body, also makes the later maintenance dismouting of valve body more convenient.

In conclusion, the utility model has the following beneficial effects: the utility model can avoid the blocking phenomenon of the cage sleeve, thereby improving the universality and the practicability of the valve.

Drawings

FIG. 1 is a sectional view of the embodiment;

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

fig. 3 is a partial structural diagram of the embodiment.

In the figure: 1. a valve body; 2. a valve cover; 3. a flow inlet channel; 4. discharging the flow channel; 5. a valve stem; 6. a valve flap; 7. a cage sleeve; 8. a noise reduction hole; 9. a hand wheel; 10. a linkage groove; 11. a drive ring; 12. a linkage assembly; 121. a slide hole; 122. a linkage rod; 13. a linkage hole; 14. a drive spring; 15. a packing washer; 16. a first seal ring; 17. a second seal ring; 18. a sealing part; 19. a stress expansion ring groove; 20. cleaning the brush; 21. opening the ring; 22. and locking the bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, a welding stop valve includes a valve body 1, a valve cover 2 sleeved on the valve body 1, an inlet passage 3 and an outlet passage 4 formed in the valve body 1, a valve rod 5 installed on the valve cover 2 and extending into the valve body 1, and a valve flap 6 installed at a lower end of the valve rod 5. A cage 7 is arranged in the valve body 1, a plurality of noise reduction holes 8 are distributed on the cage 7, and a hand wheel 9 is fixedly arranged on the valve rod 5. A split ring 21 is arranged between the valve cover 2 and the valve body 1, a locking bolt 22 is connected to the valve cover 2 in a threaded manner, and the locking bolt 22 abuts against the valve body 1. The orthographic projection of the flow inlet channel 3 is located on the peripheral wall of the cage sleeve 7, the cage sleeve 7 is arranged in the valve body 1 in a circumferential rotating mode, the peripheral wall of the cage sleeve 7 is provided with a linkage groove 10, the linkage grooves 10 are arranged in a plurality of mode of surrounding the circle center of the cage sleeve 7 at intervals, a driving ring 11 is rotatably sleeved outside the valve body 1, and a linkage assembly 12 for driving the cage sleeve 7 to rotate is arranged between the driving ring 11 and the linkage groove 10.

The valve body 1 is provided with a linkage hole 13 for communicating the driving ring 11 and the linkage groove 10, the linkage hole 13 surrounds the center of the cage 7 and extends to form a long arc, and the linkage assembly 12 comprises a slide hole 121 arranged on the driving ring 11 and a linkage rod 122 arranged in the slide hole 121 in a sliding manner and moving towards the linkage hole 13 in a reciprocating manner. A driving spring 14 for driving the linkage rod 122 to move back to one side of the linkage groove 10 is arranged in the sliding hole 121, and when the driving spring 14 is in an unstressed state, the linkage rod 122 is separated from the linkage groove 10; one end of the driving spring 14 is fixedly connected with the slide hole 121, the other end is fixedly connected with the linkage rod 122, and a sealing assembly is arranged in the valve body 1. Be equipped with the packing ring 15 that is located the cage 7 top between valve body 1 and the valve rod 5, the seal assembly is including setting up first sealing washer 16 between valve body 1 and the cage 7 periphery wall and setting up the second sealing washer 17 between packing ring 15 and cage 7, and first sealing washer 16 is located linkage hole 13 below, and first sealing washer 16 and second sealing washer 17 are graphite material.

The packing gasket 15 is fixedly provided with a sealing part 18 extending between the inner peripheral wall of the cage 7 and the valve rod 5, the sealing part 18 abuts against the inner peripheral wall of the cage 7 and the outer peripheral wall of the valve rod 5 respectively, one end surface of the sealing part 18, which is back to the packing gasket 15, is recessed inwards to form a stress expansion ring groove 19, and the sealing part 18 is made of elastic material, specifically rubber. The inner wall of the valve body 1 is fixedly provided with a cleaning brush 20, and the cleaning brush 20 extends into the noise reduction hole 8.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a welding stop valve, includes valve body (1), sets up in valve gap (2) of valve body (1), forms in the runner of advancing (3) and the runner of going out (4) of valve body (1), installs in valve gap (2) and extend into valve rod (5) in valve body (1) and set up in valve clack (6) of valve rod (5), it has a plurality of holes of making an uproar (8) of falling to distribute on cage cover (7) to be equipped with cage cover (7) in valve body (1), be equipped with hand wheel (9) on valve rod (5), its characterized in that: the orthographic projection of the runner (3) is located the peripheral wall of the cage (7), the cage (7) circumferential direction sets up in the valve body (1), the peripheral wall of cage (7) is equipped with linkage groove (10), linkage groove (10) are around being provided with a plurality ofly in the centre of a circle interval ring of cage (7), it is equipped with driving ring (11) to rotate the cover outside valve body (1), be equipped with between driving ring (11) and linkage groove (10) and drive cage (7) pivoted linkage subassembly (12).

2. The welding shut-off valve of claim 1, wherein: including setting up in linkage hole (13) of valve body (1) and intercommunication drive ring (11) and linkage groove (10), linkage hole (13) are around encircleing in cage (7) centre of a circle and extend and form a rectangular arc, linkage subassembly (12) set up in slide opening (121) of drive ring (11) and slip in slide opening (121) and towards linkage hole (13) reciprocating motion's gangbar (122).

3. The welding shut-off valve of claim 2, wherein: the valve is characterized in that a driving spring (14) for driving the linkage rod (122) to move back to one side of the linkage groove (10) is arranged in the sliding hole (121), when the driving spring (14) is in a non-stressed state, the linkage rod (122) is separated from the linkage groove (10), one end of the driving spring (14) is fixedly connected with the sliding hole (121), the other end of the driving spring is fixedly connected with the linkage rod (122), and a sealing assembly is arranged in the valve body (1).

4. The welding shut-off valve of claim 3, wherein: including setting up packing ring (15) between valve body (1) and valve rod (5) and being located cage cover (7) top, seal assembly is including setting up first sealing washer (16) between valve body (1) and cage cover (7) periphery wall and setting up second sealing washer (17) between packing ring (15) and cage cover (7), first sealing washer (16) are located linkage hole (13) below, first sealing washer (16) are graphite material with second sealing washer (17).

5. The welding shut-off valve of claim 4, wherein: fixed sealing portion (18) that are provided with on packing ring (15) and extend into between cage (7) internal perisporium and valve rod (5), sealing portion (18) support in cage (7) internal perisporium and valve rod (5) periphery wall respectively mutually, the one end of sealing portion (18) packing ring (15) dorsad is inwards sunken to form a atress inflation annular (19), sealing portion (18) are elastic material.

6. The welding shut-off valve of claim 1, wherein: the inner wall of the valve body (1) is provided with a cleaning brush (20), and the cleaning brush (20) extends into the noise reduction hole (8).

7. The welding shut-off valve of claim 1, wherein: the valve cover (2) is sleeved on the valve body (1), a split ring (21) is arranged between the valve cover (2) and the valve body (1), and a locking bolt (22) is arranged between the valve cover (2) and the valve body (1).