CN219317784U

CN219317784U - Full lining corrugated pipe stop valve

Info

Publication number: CN219317784U
Application number: CN202222181047.5U
Authority: CN
Inventors: 冯风雷
Original assignee: Zhejiang Aluwei Fluid Technology Co ltd
Current assignee: Zhejiang Aluwei Fluid Technology Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-07-07
Anticipated expiration: 2032-08-18

Abstract

The utility model relates to the field of valves and discloses a full-lining corrugated pipe stop valve which comprises a valve body, a valve clack, a valve seat, a valve rod, a sealing pot, a corrugated pipe assembly, a valve cover, a positioning piece, a valve nut and a hand wheel. The beneficial effects of the utility model are as follows: (1) The vulcanized rubber has strong corrosion resistance, can be suitable for various liquids and gases with stronger corrosiveness, and prevents the metal in the hair body from being corroded to influence the tightness; (2) the tightness of the valve clack and the valve seat is enhanced; (3) The hydraulic hammer effect generated when the bellows stop valve is opened and closed can be dealt with to a certain extent.

Description

Full lining corrugated pipe stop valve

Technical Field

The utility model relates to the field of valves, in particular to a full-lining corrugated pipe stop valve.

Background

The stop valve is one of the most widely used valves, and is suitable for medium and low pressure and high pressure as well as popular in the market due to small friction force between sealing surfaces in the opening and closing process, durability, small opening height, easy manufacture and convenient maintenance. The closing principle of the stop valve is that the valve clack sealing surface is tightly attached to the valve seat sealing surface by means of the valve lever pressure, so that medium circulation is prevented. The bellows stop valve is one type of stop valve, and a bellows is added at the sealing position of a valve rod on the basis of the stop valve to increase the sealing effect of the stop valve. At present, the sealing of the corrugated pipe stop valve is sealed by the pressure collected by the valve rod, the joint of liquid or gas with stronger corrosiveness is easy to rust, the leakage condition is easy to occur, and in addition, the water hammer phenomenon also easily causes the damage of the valve body, the valve clack and other parts.

Disclosure of Invention

The utility model aims to provide the corrugated pipe stop valve which has better sealing performance and stronger rust resistance and can better resist the water hammer effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a full inside lining bellows stop valve, includes valve body, valve clack, disk seat, valve rod, sealing bowl, bellows subassembly, valve gap, spacer, valve nut and hand wheel, the disk seat is fixed to be set up in the valve body, the valve clack with valve rod fixed connection, the valve gap with valve body fixed connection, the intake chamber of valve body, play water cavity, disk seat and valve gap inner chamber all cover have the one deck vulcanized rubber inside lining, the valve gap includes lid and two lid ears, lid and lid ear fixed connection, the lid top trompil of valve gap, the valve rod stretches out the valve gap from the trompil of valve lid top, the valve gap with the inboard of the trompil junction of valve cover is provided with sealing bowl, spacer sliding connection is two between the lid ear, the spacer with the valve rod passes through the round pin hub connection, the bellows subassembly ring is established on the valve rod, and sets up in the sealing bowl, the valve nut is encircleed and is established the valve rod top, the valve nut with valve rod threaded connection, the hand wheel with the female fixed connection of valve.

Preferably, a fat injection port is arranged at the middle position of the two cover lugs.

Preferably, the grease filling port is mounted on the valve cover through threads.

Preferably, the vulcanized rubber liner has a thickness of greater than 1cm.

Preferably, a water hammer eliminating piston is fixedly connected below the valve clack.

Preferably, the water hammer eliminating piston comprises a shell and a piston, wherein the piston is in sliding connection with the shell, and a limiting piece is arranged on the shell.

Preferably, the piston outer ring is provided with a vulcanized rubber protection ring.

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

(1) The water inlet cavity, the water outlet cavity, the valve seat and the valve cover inner cavity of the valve body are all covered with a layer of vulcanized rubber lining, so that the vulcanized rubber has strong corrosion resistance, can be suitable for various liquids and gases with strong corrosivity, and prevents metal in the valve body from being corroded to influence the tightness; (2) The vulcanized rubber is soft and elastic, when the valve clack contacts with the valve seat, the valve rod can deform the vulcanized rubber lining to a certain extent by downward pressure of the valve clack, and then the elastic force of the vulcanized rubber lining is combined to generate upward extrusion elastic force, so that the vulcanized rubber lining is tightly attached to the valve clack, and the tightness of the valve clack and the valve seat is enhanced; (3) Meanwhile, the soft characteristic of the lining of the vulcanized rubber can deal with the water hammer effect generated when the corrugated pipe stop valve is opened and closed to a certain extent.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic view of a valve cover according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a water hammer eliminating piston according to an embodiment of the present utility model;

fig. 4 is a schematic top view of a piston according to an embodiment of the present utility model.

In the figure: 1. a valve body; 101. a water inlet cavity; 102. a water outlet cavity, 2, a valve clack; 3. a valve seat; 4. a valve stem; 5. sealing the pot; 51. a bellows assembly; 6. a valve cover; 61. a cover body; 62. covering the lug; 7. a positioning sheet; 71. a pin shaft; 8. a valve nut; 9. a hand wheel; 10. a vulcanized rubber liner; 11. a fat injection port; 12. a water hammer eliminating piston; 1201. a housing; 1202. a piston; 1203. a metal fixing member; 1204. and a vulcanized rubber protection ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, the upstream and downstream medium flow directions are both standard, the upstream refers to the source direction of the medium, and the downstream refers to the destination direction of the medium, and the medium flow directions in fig. 1 and 2 of the present embodiment flow from left to right. Referring to fig. 1 and 2, the valve comprises a valve body 1, a valve clack 2, a valve seat 3, a valve rod 4, a sealing pot 5, a corrugated pipe assembly 51, a valve cover 6, a locating plate 7, a valve nut 8 and a hand wheel 9, wherein the valve seat 3 is fixedly arranged in the valve body 1, the valve clack 2 is fixedly connected with the valve rod 4, the valve cover 6 is fixedly connected with the valve body 1, a water inlet cavity 101, a water outlet cavity 102, the valve seat 3 and a valve cover cavity of the valve body 1 are all covered with a layer of vulcanized rubber lining 10, the valve cover 6 comprises a cover body 61 and two cover lugs 62, the cover body 61 and the cover lugs 62 are fixedly connected, the hole above the cover body 61 of the valve rod 6 is perforated, the valve rod 4 extends out of the hole above the valve cover 6, the sealing pot 5 is arranged on the inner side of the connecting part of the hole of the valve cover 6, the locating plate 7 is slidingly connected between the two cover lugs 62, the locating plate 7 is connected with the valve rod 4 through a pin 71, the corrugated pipe assembly 51 is annularly arranged on the valve rod 4, the valve cover 5 is fixedly connected with the valve nut 8 by the hand wheel 8, and the valve nut 8 is fixedly connected with the valve nut 8. The valve clack 2 is controlled to lift through the hand wheel 9, wherein the valve nut 8 is fixedly connected with the hand wheel 9, when the hand wheel 9 is rotated, the valve nut 8 is driven to rotate together, the valve rod 4 cannot rotate due to the limitation of the positioning sheet 7, relative rotation is generated between the valve rod 4 and the valve nut 8, and the valve rod 4 can move up and down to drive the valve clack 2 to move up and down due to the fact that the valve nut 8 is in threaded connection with the valve rod 4, so that the valve clack 2 is controlled to be opened and closed, and the sealing bowl 5 and the corrugated pipe assembly 51 are used for sealing the joint of the valve rod 4 and the valve cover 6. In the utility model, the water inlet cavity 101, the water outlet cavity 102, the valve seat 3 and the valve cover inner cavity of the valve body 1 are all covered with a layer of vulcanized rubber lining 10, so that the vulcanized rubber has strong corrosion resistance, can adapt to various liquids and gases with strong corrosivity, and prevents metal in the valve body from being corroded to influence the tightness. On the other hand, vulcanized rubber is soft and elastic, when the valve clack 2 is in contact with the valve seat 3, the valve rod 4 can deform the vulcanized rubber lining 10 to a certain extent by pressing the valve clack 2 downwards, and the elastic force of upward extrusion can be generated by combining the elasticity of the vulcanized rubber lining 10, so that the vulcanized rubber lining 10 is tightly attached to the valve clack, and the tightness of the valve clack 2 and the valve seat 3 is enhanced. Meanwhile, the soft characteristic of the vulcanized rubber lining 10 can deal with the water hammer effect generated when the corrugated pipe stop valve is opened and closed to a certain extent.

In order to facilitate the situation that lubricant is required to be added because of difficult rotation caused by rust friction and the like in the use process of the utility model, a grease filling port 11 is arranged between two cover lugs 62 of the valve cover 6, and the grease filling port 11 is arranged on the valve cover 6 through threads.

In order to further cope with the water hammer effect, the utility model also adds the water hammer eliminating piston 12 below the valve clack 2, the water hammer eliminating piston 12 is fixedly connected below the valve clack 2, the water hammer eliminating piston 12 comprises a shell 1201 and a piston 1202, the piston 1202 is in sliding connection with the shell 1201, and a limiting piece is arranged on the shell 1201. When the valve is closed again, the piston 1202 is pushed to move forwards by the medium fluid due to the force generated forward by inertia, the air pressure in the piston 1202 is compressed, the outward force is generated to resist the thrust of the medium fluid, and the piston 1202 is repeatedly pushed out by the two forces, so that the impact force of the medium fluid due to inertia is counteracted, and the water hammer effect is effectively eliminated.

Finally, the piston 1202 includes a metal fixing member 1203 and a vulcanized rubber protection ring 1204, the vulcanized rubber protection ring 1204 is disposed on the outer ring, and the metal fixing member 1203 is disposed on the inner ring. The piston 1202 slides in contact with the housing 1201 by the vulcanized rubber guard 1204 without damaging the housing 1201 and the piston 1202 itself.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a full inside lining bellows stop valve, its characterized in that includes valve body (1), valve clack (2), disk seat (3), valve rod (4), sealing bowl (5), bellows subassembly (51), valve gap (6), spacer (7), valve nut (8) and hand wheel (9), disk seat (3) are fixed to be set up in valve body (1), valve clack (2) with valve rod (4) fixed connection, valve gap (6) with valve body (1) fixed connection, inlet chamber (101), outlet chamber (102), valve seat (3) and valve gap inner chamber of valve body (1) are all covered with one deck vulcanized rubber inside lining (10), valve gap (6) include lid (61) and two lugs (62), lid (61) and lug (62) fixed connection, the top trompil of lid (61) top of valve gap (6), valve rod (4) stretch out valve gap (6) from the trompil of valve gap (6) top, valve gap (6) with valve gap (6) are provided with sealing bowl (7) are connected between two lugs (7) through the spacer (71), the bellows assembly (51) is arranged on the valve rod (4) in a surrounding mode, the bellows assembly is arranged in the sealing pot (5), the valve nut (8) is arranged above the valve rod (4) in a surrounding mode, the valve nut (8) is in threaded connection with the valve rod (4), and the hand wheel (9) is fixedly connected with the valve nut (8).

2. The full-lining corrugated pipe stop valve according to claim 1, wherein a grease filling port (11) is arranged at the middle position of the two cover lugs (62).

3. A full liner bellows shut off valve according to claim 2 wherein the grease filling port (11) is threadably mounted to the valve cap (6).

4. A full liner bellows stop valve according to claim 1 wherein the vulcanized rubber liner (10) is greater than 1cm thick.

5. The full-lining corrugated pipe stop valve according to claim 1, wherein a water hammer eliminating piston (12) is fixedly connected below the valve clack (2).

6. The full liner bellows stop valve of claim 5 wherein the water hammer eliminating piston (12) includes a housing (1201) and a piston (1202), the piston (1202) being slidably coupled to the housing (1201), the housing (1201) being provided with a stop.

7. The full liner bellows stop valve of claim 6 wherein the piston (1202) includes a metal fixture (1203) and a vulcanized rubber guard ring (1204), the vulcanized rubber guard ring (1204) being disposed on an outer ring and the metal fixture (1203) being disposed on an inner ring.