CN216242378U

CN216242378U - Positive pressure internal balance stop valve

Info

Publication number: CN216242378U
Application number: CN202122924353.9U
Authority: CN
Inventors: 杨志海; 许可业; 许显宗; 张奇
Original assignee: Zhejiang Yongnai Valve Co ltd
Current assignee: Zhejiang Yongnai Valve Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-08
Anticipated expiration: 2031-11-25

Abstract

The utility model discloses a positive pressure internal balance stop valve, which comprises a valve body, wherein a valve cover is movably arranged at the top of the valve body, a valve rod is enabled to have a downward displacement force by rotating a bevel gear set, so that the valve rod integrally descends towards the inside of the valve body, the valve rod descends to enable a valve clack thrust plate to push a small valve clack and a large valve clack to descend so as to be contacted with the bottom wall of the valve body, water in the valve body is isolated or circulated, the intercepting effect is realized, waterproof sealing treatment is carried out at the joint of the valve cover and the valve body through a wound gasket so that the sealing performance of the whole stop valve structure is stronger, meanwhile, the joint of the valve rod and the large valve clack is reinforced through the small valve clack thrust plate, on the premise of improving the sealing performance, the firmness of the device is stronger, meanwhile, because the structures at two sides of the valve rod in the valve body are in a symmetrical state, the situation that overhigh water pressure caused by the extrusion of other components when water flows through the inside the valve body is avoided, thereby prolonging the service life of the stop valve.

Description

Positive pressure internal balance stop valve

Technical Field

The utility model relates to the technical field of stop valve equipment, in particular to a positive pressure internal balance stop valve.

Background

The stop valve, also called stop valve, is one of the most widely used valves, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also for high pressure. The structure length of stop valve is greater than the gate valve, and fluid resistance is big simultaneously, and long-term operation, sealing reliability is not strong.

To this end, the chinese utility model with the granted publication No. 201620197401.5 discloses a stop valve, which solves the problem that the decorative cover is not easy to be attached to the wall surface when the installation position of the valve body is deviated, and the technical proposal is that the stop valve comprises a valve body, the outer edge of the valve body is provided with a connecting screw thread, the outer edge of the valve body is sleeved with the decorative cover, one end of the connecting screw thread near the decorative cover extends with an adjusting screw thread, the adjusting screw thread is connected with the inner circle screw thread of the decorative cover,

stop valve in the above-mentioned case, the dress trim cover can change its position on adjusting the screw thread through rotating, guarantees that the valve body is under different mounted positions, and the dress trim cover can laminate with the wall. However, when water in the valve body is circulated, the water pressure is easy to be unbalanced, so that the valve body is damaged, the service life of the valve body is shortened, and therefore a positive pressure internal balance stop valve is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a positive pressure internal balance stop valve to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a positive pressure internal balance stop valve comprises a valve body, wherein a valve cover is movably arranged at the top of the valve body;

a double-headed bolt is movably inserted between the two ends of the valve cover and the top of the valve body, hexagonal nuts are arranged at the two ends of the double-headed bolt in a threaded manner, a valve rod is movably inserted in the middle of the valve body and the valve cover, one third of the valve rod is positioned in the valve body, and a bevel gear set is movably sleeved on the valve rod at the upper end of the valve cover;

and a winding gasket is movably arranged at the joint of the valve cover and the valve body.

Preferably, a packing pressing plate is movably sleeved at the joint of the valve rod and the valve cover, the bottom of the packing pressing plate is movably clamped with the packing pressing sleeve, two ends of the packing pressing plate are in through connection through a swing bolt, nuts are in threaded connection with two ends of the swing bolt, and the nuts and the end part of the swing bolt are reinforced through pin blocks.

Preferably, a first packing and a second packing are in contact connection with the side of the valve rod positioned in the valve cover, the top of the first packing is in contact with the bottom of the second packing, and the first packing and the second packing are embedded in the inner wall of the valve cover close to the two sides of the valve rod.

Preferably, an inner hexagon screw is embedded in the middle of the valve rod above the valve cover, and the outer end of the inner hexagon screw is fixedly connected with the clamping block.

Preferably, a small valve clack is fixedly connected to one end of the valve rod located inside the valve body, a valve clack thrust plate is filled between the small valve clack and one end face of the valve rod, the small valve clack is embedded in the large valve clack, and the bottom face of the large valve clack is in contact connection with the inner bottom wall of the valve body.

Preferably, a rotating handle is movably arranged on one side of the bevel gear set, and the bevel gear set is a whole assembly and is used for providing steering power for the valve rod.

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

carry out water-tight seal through the winding gasket and handle the leakproofness that makes whole stop valve structure stronger at the junction of valve gap and valve body, consolidate through little valve clack and valve clack thrust plate in the junction of valve rod and big valve clack simultaneously, under the prerequisite that improves the leakproofness, make the tightness of device stronger, simultaneously because the structure of the inside valve rod both sides of valve body is the symmetric state, can not produce the too high condition of water pressure because of the extrusion of other subassemblies when making rivers pass through the valve body is inside, thereby prolong the life of stop valve.

Drawings

FIG. 1 is a sectional view of the structure of the present invention.

In the figure: 1. a valve body; 2. a small valve flap; 3. a valve clack thrust plate; 4. a valve stem; 5. a large valve flap; 9. winding the gasket; 10. a valve cover; 11. a stud bolt; 12. a hexagonal head nut; 13. filling one; 14. a second filler; 15. pressing and sleeving the filler; 16. a packing press plate; 17. a socket head cap screw; 18. a clamping block; 19. a bevel gear set; 20. a pin block; 21. a nut; 22. and (4) a swing bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.

Referring to fig. 1, the present invention provides a technical solution: a positive pressure internal balance stop valve comprises a valve body 1, wherein a valve cover 10 is movably arranged at the top of the valve body 1;

a stud bolt 11 is movably inserted between the two ends of the valve cover 10 and the top of the valve body 1, a hexagon nut 12 is installed at the two ends of the stud bolt 11 in a threaded manner, a valve rod 4 is movably inserted between the valve body 1 and the middle of the valve cover 10, one third of the valve rod 4 is positioned in the valve body 1, and a bevel gear set 19 is movably sleeved on the valve rod 4 at the upper end of the valve cover 10;

a winding gasket 9 is movably arranged at the joint of the valve cover 10 and the valve body 1, a packing pressing plate 16 is movably sleeved at the joint of the valve rod 4 and the valve cover 10, the bottom of the packing pressing plate 16 is movably clamped with a packing pressing sleeve 15, two ends of the packing pressing plate 16 are in through connection through an eyelet bolt 22, nuts 21 are in threaded connection with two ends of the eyelet bolt 22, and the nuts 21 and the ends of the eyelet bolt 22 are reinforced through pin blocks 20.

And a first packing 13 and a second packing 14 are connected beside the valve rod 4 inside the valve cover 10 in a contact manner, the top of the first packing 13 is contacted with the bottom of the second packing 14, and the first packing 13 and the second packing 14 are embedded in the inner wall of the valve cover 10 close to two sides of the valve rod 4.

The valve rod 4's of valve gap 10 top embedded socket head cap screw 17 in the middle part, and socket head cap screw 17 outer end rigid coupling clamp splice 18, the one end of the valve rod 4 that is located valve body 1 inside is served the rigid coupling little valve clack 2, and packs valve clack thrust plate 3 between the terminal surface of little valve clack 2 and valve rod 4, little valve clack 2 is embedded in big valve clack 5, the interior diapire of valve body 1 is connected in the bottom surface contact of big valve clack 5.

A rotating handle is movably arranged on one side of the bevel gear set 19, the bevel gear set 19 is an integral assembly and is used for providing steering power for the valve rod 4,

the first filler 13 and the winding gasket 9 are made of flexible graphite, and the second filler 14 is made of woven graphite.

The working principle is as follows: when the device is normally used, the valve rod 4 has downward displacement force by rotating the bevel gear set 19, so that the valve rod 4 integrally descends to the inside of the valve body 1, the valve rod 4 descends to enable the valve clack thrust plate 3 to push the small valve clack 2 and the large valve clack 5 to descend, so that the valve rod is contacted with the bottom wall of the valve body 1 to separate or circulate water in the valve body 1, the effect of cutting is achieved, waterproof sealing treatment is performed at the joint of the valve cover 10 and the valve body 1 through the winding gasket 9 to enable the sealing performance of the whole stop valve structure to be stronger, meanwhile, the joint of the valve rod 4 and the large valve clack 5 is reinforced through the small valve clack 2 and the thrust plate 3, on the premise of improving the sealing performance, the firmness of the device is stronger, meanwhile, as the structures at two sides of the valve rod 4 in the valve body 1 are in a symmetrical state, the situation that overhigh water pressure is generated due to the extrusion of other components when water flows through the inside the valve body 1 is avoided, thereby prolonging the service life of the stop valve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a balanced stop valve in malleation, includes valve body (1), valve body (1) top movable mounting valve gap (10), its characterized in that:

the double-headed bolt (11) is movably inserted between the two ends of the valve cover (10) and the top of the valve body (1), hexagonal nuts (12) are installed at the two ends of the double-headed bolt (11) in a threaded mode, the valve rod (4) is movably inserted in the middle of the valve body (1) and the valve cover (10), one third of the valve rod (4) is located inside the valve body (1), and a bevel gear set (19) is movably sleeved on the valve rod (4) at the upper end of the valve cover (10);

and a winding gasket (9) is movably arranged at the joint of the valve cover (10) and the valve body (1).

2. The positive pressure internal balance shut-off valve of claim 1, wherein: the packing pressing plate (16) is movably sleeved at the joint of the valve rod (4) and the valve cover (10), the bottom of the packing pressing plate (16) is movably clamped with the packing pressing sleeve (15), two ends of the packing pressing plate (16) are in through connection through the swing bolt (22), nuts (21) are in threaded connection with two ends of the swing bolt (22), and the end parts of the nuts (21) and the swing bolt (22) are reinforced through pin blocks (20).

3. A positive pressure internal balance shut off valve according to claim 2, wherein: and a first packing (13) and a second packing (14) are in contact connection beside the valve rod (4) positioned in the valve cover (10), the top of the first packing (13) is in contact with the bottom of the second packing (14), and the first packing (13) and the second packing (14) are embedded in the inner wall of the valve cover (10) close to the two sides of the valve rod (4).

4. The positive pressure internal balance shut-off valve of claim 1, wherein: an inner hexagon screw (17) is embedded in the middle of the valve rod (4) above the valve cover (10), and a clamping block (18) is fixedly connected to the outer end of the inner hexagon screw (17).

5. The positive pressure internal balance shut-off valve of claim 1, wherein: the valve is characterized in that one end of a valve rod (4) inside a valve body (1) is fixedly connected with a small valve clack (2), a valve clack thrust plate (3) is filled between the small valve clack (2) and one end face of the valve rod (4), the small valve clack (2) is embedded in a large valve clack (5), and the bottom face of the large valve clack (5) is in contact connection with the inner bottom wall of the valve body (1).

6. The positive pressure internal balance shut-off valve of claim 1, wherein: and a rotating handle is movably arranged on one side of the bevel gear set (19), and the bevel gear set (19) is a whole assembly and is used for providing steering power for the valve rod (4).