CN219432451U

CN219432451U - Bellows stop valve

Info

Publication number: CN219432451U
Application number: CN202320362315.5U
Authority: CN
Inventors: 吴曙刚; 童维峰; 张萍; 曹伟
Original assignee: Ningbo Falante Valve Co ltd
Current assignee: Ningbo Falante Valve Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-07-28
Anticipated expiration: 2033-03-02

Abstract

The utility model discloses a corrugated pipe stop valve, which belongs to the technical field of stop valves and comprises a stop valve body, wherein a valve rod limiting upper cover assembly is fixedly arranged at the top of the stop valve body through bolts, a threaded hole is formed in the surface of the valve rod limiting upper cover assembly, a threaded valve rod is meshed with the threaded hole, a hand wheel is fixedly arranged at one end of the threaded valve rod, the other end of the threaded valve rod extends into the stop valve body through the threaded hole and is fixedly arranged on the surface of the top of a mounting plate, a valve clack is fixedly arranged on the surface of the bottom of the mounting plate, the threaded valve rod is positioned in the corrugated pipe at the inner part of the stop valve body, and the hand wheel cannot rotate due to the fact that the valve clack is jacked up by the valve rod limiting upper cover assembly to drive the threaded valve rod to rotate due to overlarge pressure in a valve cavity, so that the air tightness of the stop valve is not affected.

Description

Bellows stop valve

Technical Field

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

Background

The stop valve is also called a stop valve, and belongs to a forced sealing valve, so that when the valve is closed, pressure is applied to a valve clack to force a sealing surface not to leak, when a medium enters the valve from the lower part of the valve clack, the resistance which needs to be overcome by the operation force is the friction force of a valve rod and a filler and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so that the diameter of the valve rod is larger, otherwise, the valve rod is subject to bending fault, and the valve rod is divided into three types according to the connection mode: flange connection, screw thread connection and welding connection, after the self-sealing valve appears, the medium flow direction of the stop valve is changed from the upper part of the valve clack to the valve cavity, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, the diameter of the valve rod can be correspondingly reduced, meanwhile, under the action of medium, the valve in the form is also more strict, the valve in China is 'three-way' provided, the flow direction of the stop valve is uniformly regulated, when the stop valve is opened from top to bottom, the opening height of the valve clack is 25% -30% of the nominal diameter, the flow rate is maximum, the valve is up to the full opening position, so the full opening position of the stop valve is determined by the stroke of the valve clack, the opening and closing part of the stop valve is a plug-shaped valve clack, the upper surface of the seal is plane or the sea cone, the valve clack moves linearly along the center line of the valve seat, and the movement form of the valve rod, (the general name: hidden rod) and lifting rotary rod type can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, therefore, the shutoff stop valve of the type is very suitable for being used for cutting off or adjusting and throttling, has very reliable cutting off function because the valve rod of the type has relatively short opening or closing stroke, and is very suitable for adjusting the flow because the change of the valve seat through hole and the stroke of the valve clack are in a proportional relation, and the application number is as follows: CN202022463456.5 discloses a novel bellows stop valve, including stop valve body and valve gap, the valve pocket has been seted up at stop valve body top, stop valve body top and valve gap are through two bolt fixed connection, two annular plates of valve pocket inside wall fixedly connected with, first screw hole has been seted up at annular plate top, two screw hole inside wall threaded connection has the bellows, bellows top and valve gap top fixed connection, bellows lateral wall threaded connection has the screw thread piece, screw thread piece bottom fixedly connected with valve clack. According to the utility model, under the mutual matching of the bolts, the annular plates, the corrugated pipes, the thread blocks, the valve rods, the valve clacks and the thread blocks, the first threaded holes on the two annular plates are in threaded connection with the corrugated pipes, and compared with the traditional corrugated pipes, the device ensures that the corrugated pipes are more stable and are not easy to damage.

However, the inventor has found that, in the above scheme, by rotating the rotary handle, the rotary handle drives the valve rod to rotate, the valve rod rotates to drive the valve clack and the threaded block to rotate, the threaded block rotates to enable the valve clack to move, so that the valve clack and the inner wall of the valve body are in contact and close to finish blocking fluid flow, and the threaded block is connected with the corrugated pipe through threaded engagement, so that when the fluid pressure in the valve cavity is high, the valve clack can be jacked up to drive the threaded block to rotate and rise, thereby affecting the overall air tightness of the stop valve.

How to invent a bellows stop valve to improve these problems becomes a urgent problem for those skilled in the art.

Disclosure of Invention

In order to make up the defects, the utility model provides a corrugated pipe stop valve, which aims to solve the problems that when a rotary handle is rotated, the rotary handle drives a valve rod to rotate, the valve rod rotates to drive a valve clack and a threaded block to rotate, the threaded block rotates to enable the valve clack to move to enable the valve clack to be in contact with the inner wall of a valve body to finish blocking fluid flow, and the threaded block is connected with a corrugated pipe through threaded engagement, so that when the fluid pressure in a valve cavity is high, the valve clack can be jacked up to drive the threaded block to rotate and rise, and the integral air tightness of the stop valve is affected.

The utility model is realized in the following way: the utility model provides a bellows stop valve, includes the stop valve body, stop valve body top has the spacing upper cover subassembly of valve rod through bolt fixed mounting, the spacing upper cover subassembly surface of valve rod is provided with the screw hole and the meshing is installed the screw thread valve rod in the screw hole, the one end fixed mounting of screw thread valve rod has the hand wheel, the other end of screw thread valve rod extends to inside the stop valve body and fixed mounting in mounting panel top surface through the screw hole, mounting panel bottom surface fixed mounting has the valve clack, screw thread valve rod is located inside the part of stop valve body and is located the bellows, bellows top fixed mounting is in the spacing upper cover subassembly bottom surface of valve rod, bellows other end fixed mounting is in mounting panel upper surface.

In a preferred technical scheme of the utility model, the stop valve body comprises a valve body, a partition plate is arranged on the inner wall of the vertical part of the valve body, through holes are formed in the surface of the partition plate, and annular mounting grooves which are concave inwards are formed in the inner wall of openings at two sides of the valve body.

In a preferred embodiment of the present utility model, a filter screen plate is slidably mounted in each of the mounting grooves, and the diameter of the outer wall of each filter screen plate is identical to the diameter of the inner wall of the mounting groove.

In a preferred technical scheme of the utility model, a side cover is arranged on one side of each filter screen plate, each side cover is fixedly arranged at openings on two sides of a valve body through bolts, through communication holes are formed in the surfaces of the side covers, a limiting ring is arranged on one side of each side cover facing the valve body, the diameter of the inner wall of each limiting ring is consistent with that of the inner wall of the communication hole, the diameter of the outer wall of each limiting ring is consistent with that of the inner wall of a mounting groove, and the sum of the length of each limiting ring and the thickness of the filter screen plate is consistent with the depth of the mounting groove.

In a preferred technical scheme of the utility model, the valve rod limiting upper cover assembly comprises an upper cover body fixedly mounted at an opening at the top of a valve body through bolts, mounting frames are arranged on outer walls of two sides of the upper cover body, a first sliding groove is formed in the upper surface of each mounting frame, and the bottom end of a moving rod is slidably mounted in each first sliding groove.

In a preferred technical scheme of the utility model, each movable rod is provided with a limiting block in a sliding manner, a limiting groove is formed in the surface of one side of each limiting block facing the hand wheel, and a limiting plate is arranged at the top end of each movable rod.

In a preferred technical scheme of the utility model, each limiting groove is a semicircular groove, the diameter of each limiting groove is matched with the diameter of the outer ring of the hand wheel, and an anti-skid rubber pad is arranged in each limiting groove.

In a preferred technical scheme of the utility model, mounting blocks are arranged on two side surfaces of the bottom end of each movable rod, the connecting part of each mounting block and the bottom end of each movable rod is slidably arranged in a second chute, and each second chute is arranged on two side surfaces of the mounting frame in a penetrating manner and is communicated with the first chute.

In a preferred technical scheme of the utility model, the surface of each installation block is provided with a threaded hole, screws are installed in the threaded holes of the two installation blocks which are positioned at the two ends of the upper cover body and positioned at the same side in a meshed manner, one end of each screw is provided with a limiting rod head, and the other end of each screw is provided with a fastening nut in a meshed manner.

The beneficial effects of the utility model are as follows: according to the corrugated pipe stop valve obtained through the design, when the corrugated pipe stop valve is used, the clamping and clamping of the hand wheel are completed through the valve rod limiting upper cover assembly, so that the hand wheel cannot rotate, the phenomenon that the valve clack is jacked to drive the threaded valve rod to rotate due to overlarge pressure in the valve cavity is avoided, the air tightness of the stop valve is affected, the filter screen plate can also filter fluid entering the valve cavity, and the filter screen plate can be taken, placed and cleaned by disassembling the side cover, and is relatively convenient to use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a schematic perspective view of an overall cross-sectional structure provided by an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of the whole structure of a valve rod limiting upper cover assembly according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of the whole cross-sectional structure of a stop valve according to an embodiment of the present utility model.

In the figure: 1-a stop valve body; 2-a valve rod limiting upper cover assembly; 3-threaded valve stem; 4-a hand wheel; 5-mounting plates; 6-a valve clack; 7-a bellows; 8-a filter screen plate; 9-side covers; 101-valve body; 102-dividing plates; 103-through holes; 104-mounting grooves; 201-an upper cover body; 202-mounting frame; 203-a first chute; 204-moving the rod; 205-limiting blocks; 206-a limit groove; 207-limiting plates; 208-mounting blocks; 209-a second chute; 210-a screw; 211-a limit rod head; 212-tightening the nut; 901-stop collar.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a bellows stop valve, including stop valve body 1, stop valve body 1 top is through the spacing upper cover subassembly 2 of bolt fixed mounting valve rod, the spacing upper cover subassembly 2 surface of valve rod is provided with the screw hole and the meshing is installed screw thread valve rod 3 in the screw hole, the one end fixed mounting of screw thread valve rod 3 has hand wheel 4, the other end of screw thread valve rod 3 extends to stop valve body 1 inside and fixed mounting in mounting panel 5 top surface through the screw hole, mounting panel 5 bottom fixed surface installs valve clack 6, screw thread valve rod 3 is located stop valve body 1 inside part and is located bellows 7 inside, bellows 7 top fixed mounting is in the spacing upper cover subassembly 2 bottom surface of valve rod, bellows 7 other end fixed mounting is in mounting panel 5 upper surface.

Referring to fig. 1, 2 and 4, the stop valve body 1 includes a valve body 101, a partition plate 102 is disposed on an inner wall of a vertical portion of the valve body 101, the partition plate 102 is used for dividing a valve cavity, a through hole 103 is formed on a surface of the partition plate 102, fluid can flow in the valve body 101 through the through hole 103, a diameter of the through hole 103 is adapted to a diameter of a valve clack 6, when the valve clack 6 is clamped in the through hole 103, the valve cavity forms two independent sealed spaces to prevent fluid flow, annular mounting grooves 104 recessed inwards are disposed on inner walls of openings on two sides of the valve body 101, a filter screen 8 is slidably mounted in each mounting groove 104, an outer wall diameter of each filter screen 8 is identical to an inner wall diameter of the mounting groove 104, impurities in fluid entering the valve body 101 can be filtered after the filter screen 8 is mounted in the mounting grooves 104, thereby reducing a possibility that the impurities enter the valve cavity 901, a service life of the stop valve can be prolonged, each filter screen 8 is provided with a side cap 9, each side cap 9 is fixedly mounted on the openings on two sides of the valve body 101 through bolts, through the through holes through the cap 9 is formed on the surface, a connecting pipe is connected to enable the fluid to pass through the inner wall of each side cap 9 to be provided with an annular mounting groove 104, and the diameter of each filter screen 901 is identical to the diameter of the inner wall of the filter screen 101, and the inner wall is identical to the diameter of the mounting ring 901 is identical to the inner wall diameter of the filter screen 101 when the filter screen 101 is mounted on the side of the filter screen 101, and the inner wall is identical to the inner wall is mounted with the inner wall of the side wall of the filter screen 101, and the filter screen is mounted ring is fixed to the side diameter of the side wall has a diameter of the side wall is identical to the side wall is 1, and the side 1 is fixed to the diameter of the side 1, when the side is attached to the side is attached ring is attached to the side 1 is attached to the side and the side is attached to the side 101.

Referring to fig. 3, the valve rod limiting upper cover assembly 2 includes an upper cover body 201 fixedly mounted at an opening at the top of the valve body 101 through bolts, mounting frames 202 are provided on outer walls of two sides of the upper cover body 201, a first sliding groove 203 is provided on an upper surface of each mounting frame 202, a bottom end of a moving rod 204 is slidably mounted in each first sliding groove 203, the moving rod 204 can slide in the first sliding groove 203, thereby adjusting a distance between the moving rod 204 and the hand wheel 4, a limiting block 205 is slidably mounted on each moving rod 204, a limiting groove 206 is provided on a surface of each limiting block 205 facing the hand wheel 4, a limiting plate 207 is provided on a top end of each moving rod 204, each limiting groove 206 is a semicircular groove with a diameter adapted to a diameter of an outer ring of the hand wheel 4, an anti-slip rubber pad is provided in each limiting groove 206, the limiting block 205 can perform height adjustment of the relative moving rod 204, when the limit grooves 206 on two sides are clamped on the outer ring surface of the hand wheel 4, the hand wheel 4 can be clamped in opposite directions, the anti-slip rubber pads arranged on the inner wall of the limit grooves 206 can enhance the friction force between the limit grooves 206 and the hand wheel 4, prevent the hand wheel 4 from rotating, and avoid the displacement of the valve clack 6, thereby enhancing the air tightness of the stop valve, the two side surfaces of the bottom end of each moving rod 204 are provided with the mounting blocks 208, the connecting part of each mounting block 208 and the bottom end of the moving rod 204 is slidably arranged in the second sliding groove 209, each second sliding groove 209 penetrates through the two side surfaces of the mounting frame 202 and is communicated with the first sliding groove 203, so that the moving rod 204 can be driven to synchronously move when the mounting blocks 208 move, the surfaces of each mounting block 208 are provided with threaded holes, the threaded directions of the threaded holes arranged on the surfaces of the mounting blocks 208 on two ends of the upper cover body 201 are opposite, screw rods 210 are installed in the threaded holes of the two second sliding grooves 209 positioned at two ends of the upper cover body 201 and positioned at the same side in a meshed manner, a limit rod head 211 is arranged at one end of each screw rod 210, a fastening nut 212 is installed at the other end of each screw rod 210 in a meshed manner, and when the screw rods 210 are rotated, installation blocks 208 at two ends can be driven to slide in opposite directions, so that the distance between two limit blocks 205 can be adjusted, the two limit blocks 205 can be opened or closed to clamp and loosen the hand wheel 4, the positions of the two installation blocks 208 can be fixed through the limitation of the fastening nut 212 and the limit rod head 211, the hand wheel 4 is fastened, the valve clack 6 is jacked up due to overlarge fluid pressure in the stop valve to drive the threaded valve rod 3 to rotate, and the air tightness of the stop valve in use is guaranteed.

Working principle: when the stop valve is required to be closed to stop fluid flow, the threaded valve rod 3 can be driven to rotate through the rotation of the hand wheel 4, the threaded valve rod 3 is driven to move towards the inside of the valve body 101 through the relation that the threaded valve rod 3 is meshed with the threaded hole formed in the surface of the upper cover body 201, so that the valve clack 6 is driven to move towards the through hole 103 to be matched with the partition plate 102 in a sealing and clamping mode, separation of the valve cavity is completed, fluid flow in the valve cavity is stopped, the two side limiting blocks 205 are adjusted to be at the same height as the hand wheel 4, the two side mounting blocks 208 are driven to relatively slide through the rotation screw 210 to drive the two side moving rods 204 to synchronously slide, the limiting grooves 206 are clamped on the two side surfaces of the outer ring of the hand wheel 4, the two side mounting blocks 208 are fixed through the fastening nuts 212 and the limiting heads 211, clamping and clamping of the hand wheel 4 are completed, the hand wheel 4 cannot rotate, the valve clack 6 is driven to rotate due to the fact that the pressure in the valve cavity is not too large, fluid entering the valve cavity is filtered, the filter screen 8 can be removed, and the filter screen 8 is relatively convenient to clean.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a bellows stop valve, its characterized in that, includes the stop valve body, stop valve body top is through the spacing upper cover subassembly of bolt fixed mounting valve rod, the spacing upper cover subassembly surface of valve rod is provided with the screw hole and the meshing is installed the screw thread valve rod in the screw hole, the one end fixed mounting of screw thread valve rod has the hand wheel, the other end of screw thread valve rod extends to inside the stop valve body and fixed mounting in mounting panel top surface through the screw hole, mounting panel bottom surface fixed mounting has the valve clack, screw thread valve rod is located inside the part of stop valve body and is located the bellows, bellows top fixed mounting is in the spacing upper cover subassembly bottom surface of valve rod, bellows other end fixed mounting is in the mounting panel upper surface.

2. The bellows stop valve of claim 1, wherein: the stop valve body comprises a valve body, a partition plate is arranged on the inner wall of the vertical part of the valve body, through holes are formed in the surface of the partition plate, and annular mounting grooves which are sunken inwards are formed in the inner wall of openings at two sides of the valve body.

3. The bellows stop valve of claim 2, wherein: and each filter screen plate is slidably mounted in each mounting groove, and the diameter of the outer wall of each filter screen plate is consistent with the diameter of the inner wall of each mounting groove.

4. A bellows stop valve according to claim 3, wherein: every filter screen plate one side is provided with the side cap, every the side cap passes through bolt fixed mounting in valve body both sides opening part and surface has seted up the intercommunicating pore that runs through, every the side cap is provided with the spacing ring towards one side of valve body, every spacing ring inner wall diameter is unanimous with intercommunicating pore inner wall diameter, every spacing ring outer wall diameter is unanimous with mounting groove inner wall diameter, every spacing ring length is unanimous with mounting groove depth with the sum of filter screen plate thickness.

5. The bellows stop valve of claim 1, wherein: the valve rod limiting upper cover assembly comprises an upper cover body fixedly mounted at the top opening of the valve body through bolts, mounting frames are arranged on the outer walls of two sides of the upper cover body, first sliding grooves are formed in the upper surfaces of the mounting frames, and the bottom ends of moving rods are slidably mounted in the first sliding grooves.

6. The bellows stop valve of claim 5, wherein: each movable rod is provided with a limiting block in a sliding mode, each limiting block faces one side surface of the hand wheel and is provided with a limiting groove, and the top end of each movable rod is provided with a limiting plate.

7. The bellows stop valve of claim 6, wherein: each limiting groove is a semicircular groove, the diameter of each limiting groove is matched with the diameter of the outer ring of the hand wheel, and an anti-slip rubber pad is arranged in each limiting groove.

8. The bellows stop valve of claim 7, wherein: every the movable rod bottom both sides surface sets up the installation piece, every the installation piece with the junction sliding mounting of movable rod bottom is in the second spout, every the second spout runs through and sets up in mounting bracket both sides surface and be linked together with first spout.

9. The bellows stop valve of claim 8, wherein: screw rods are installed in the threaded holes of the two installation blocks, which are located at the two ends of the upper cover body and located at the same side in a meshed mode, a limit rod head is arranged at one end of each screw rod, and a fastening nut is installed at the other end of each screw rod in a meshed mode.