CN220727216U

CN220727216U - High-temperature-resistant corrosion-resistant axial flow check valve

Info

Publication number: CN220727216U
Application number: CN202322437177.5U
Authority: CN
Inventors: 王会想; 袁翠峰; 张中正
Original assignee: Zhongbo Valve Group Co ltd
Current assignee: Zhongbo Valve Group Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-05
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a high-temperature-resistant corrosion-resistant axial flow check valve, which relates to the technical field of axial flow check valves and comprises a valve body, wherein a connecting pipe is fixedly connected to the side wall of the valve body, a rectangular box is fixedly connected to the outer wall of the connecting pipe, and a filter screen penetrating through the inside of the rectangular box is arranged in the connecting pipe.

Description

High-temperature-resistant corrosion-resistant axial flow check valve

Technical Field

The utility model relates to the technical field of axial flow check valves, in particular to a high-temperature-resistant corrosion-resistant axial flow check valve.

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure; belongs to automatic valves, which are also called check valves, one-way valves, reflux valves or isolation valves. The movement modes of the valve clack are divided into lifting type and swing type; the lifting check valve is similar to a stop valve in structure, and only lacks a valve rod for driving the valve clack; medium flows in from the inlet end and flows out from the outlet end; when the inlet pressure is greater than the sum of the weight of the valve clack and the flow resistance thereof, the valve is opened; on the contrary, when the medium flows backwards, the valve is closed, so that the backflow of water can be prevented.

Through retrieving, application number 201920824348.0 discloses an axial-flow check valve, including the valve body, be equipped with disk seat, valve clack and water conservancy diversion body in the valve body, the valve clack is fixed on the disk seat, and is equipped with the round pin axle on the valve clack, the water conservancy diversion body is located on the round pin axle, and is equipped with the spring, characterized by between water conservancy diversion body and the valve clack: the periphery of the edge of the valve clack is equally divided into a plurality of guide rods, and the guide body is provided with a through hole for allowing the guide rods to pass through. The axial flow type check valve is more stable in structure and free of noise.

But this axial flow type check valve does not filter the impurity in the rivers, make impurity get into the inside of check valve, cause the jam, lead to the valve clack to form sealedly with the unable laminating of valve body interior terminal surface, sealing performance is poor, can lead to the backward flow of water, this axial flow type check valve does not have the high temperature resistant corrosion resistant layer of check valve moreover, when fluid is high temperature, can scald personnel, rivers can corrode the valve body simultaneously, the life of valve body has been reduced, then, have so, the structure defect to present is studied the improvement, proposes a high temperature resistant corrosion resistant axial flow type check valve.

Disclosure of Invention

The utility model aims to provide a high-temperature-resistant corrosion-resistant axial flow check valve so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high temperature resistant corrosion-resistant axial flow check valve, includes the valve body, the lateral wall fixedly connected with connecting pipe of valve body, the outer wall fixedly connected with rectangle case of connecting pipe, the inside of connecting pipe is provided with the filter screen that runs through with rectangle incasement portion, the top fixedly connected with connecting plate of filter screen, the top fixedly connected with handle of connecting plate, the top fixedly connected with fixed block of rectangle case, the inside of fixed block runs through there is the pull rod, the outer wall fixedly connected with slider of pull rod, the lateral wall fixedly connected with and the spacing spring of fixed block lateral wall fixedly connected with of slider.

Preferably, the inside of valve body is provided with the insulating layer, the inner wall fixedly connected with anticorrosive coating of insulating layer, the inner wall fixedly connected with dead lever of anticorrosive coating, the one end fixedly connected with piston cylinder body of dead lever, the inner wall sliding connection of piston cylinder body has the piston, the lateral wall fixedly connected with of piston and piston cylinder body inner wall fixedly connected's reset spring, the lateral wall fixedly connected with valve rod of piston, the lateral wall fixedly connected with valve clack of valve rod, the lateral wall fixedly connected with inlet tube of connecting pipe, the lateral wall fixedly connected with outlet pipe of valve body.

Preferably, the sliding block and the rectangular box form a sliding structure through the pull rod and the limiting spring.

Preferably, the connecting plate and the rectangular box form a clamping structure through a pull rod.

Preferably, the top end of the rectangular box is provided with a sliding groove which is attached to the side wall of the sliding block.

Preferably, the fixing rods are provided with four groups, and the positions of the four groups of fixing rods are distributed at equal intervals relative to the outer wall of the piston cylinder body.

Preferably, the piston and the piston cylinder form a sliding structure through the valve rod and the valve clack.

Preferably, the valve clack is conical.

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

1. according to the utility model, the filter screen and the pull rod are arranged, when impurities filtered by the filter screen are excessive, the filter screen is required to be cleaned, at the moment, the pull rod is pulled to two sides to drive the sliding block to move left and right against the elasticity of the limiting spring, the sliding groove which is attached to the side wall of the sliding block is arranged at the top end of the rectangular box, the purpose of limiting the sliding block is achieved, when the pull rod is far away from the connecting plate, the filter screen is taken out from the connecting pipe through the handle to be cleaned, then the cleaned filter screen is inserted into the original position, the pull rod is loosened, the elasticity of the limiting spring is recovered, and the pull rod is inserted back into the groove of the side wall of the connecting plate to fix the filter screen and the connecting plate, so that the purpose of cleaning the filter screen is achieved conveniently;

2. according to the utility model, through arranging the piston and the return spring, water flows into the connecting pipe through the water inlet pipe and flows into the valve body through the filter screen, at the moment, the valve clack pushes the valve rod under the action of the water flow, so that the piston compresses the elasticity of the return spring and moves along the inner wall of the piston cylinder body, the water flow passes through and flows to the water outlet pipe, when the flow of the water flow is smaller or stops, the return spring can restore the elasticity, the valve clack is restored to the original position through the piston and the valve rod, the valve body is plugged, and the valve clack is tapered, so that the width of the valve clack is increased, and the sealing reliability of the check valve is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of an axial flow check valve;

FIG. 2 is a schematic overall cross-sectional structural view of an axial flow check valve;

FIG. 3 is a schematic diagram of a tie rod and a connecting plate;

fig. 4 is a schematic cross-sectional view of a valve body.

In the figure: 1. a valve body; 2. a connecting pipe; 3. a rectangular box; 4. a filter screen; 5. a connecting plate; 6. a handle; 7. a fixed block; 8. a pull rod; 9. a slide block; 10. a limit spring; 11. a thermal insulation layer; 12. an anti-corrosion layer; 13. a fixed rod; 14. a piston cylinder; 15. a piston; 16. a return spring; 17. a valve stem; 18. a valve flap; 19. a water inlet pipe; 20. and a water outlet pipe.

Description of the embodiments

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.

Embodiment one: as shown in fig. 1-3, the high-temperature-resistant corrosion-resistant axial flow check valve comprises a valve body 1, wherein a connecting pipe 2 is fixedly connected to the side wall of the valve body 1, a rectangular box 3 is fixedly connected to the outer wall of the connecting pipe 2, a filter screen 4 penetrating through the interior of the rectangular box 3 is arranged in the connecting pipe 2, a connecting plate 5 is fixedly connected to the top end of the filter screen 4, a handle 6 is fixedly connected to the top end of the connecting plate 5, a fixing block 7 is fixedly connected to the top end of the rectangular box 3, a pull rod 8 penetrates through the interior of the fixing block 7, a sliding block 9 is fixedly connected to the outer wall of the pull rod 8, and a limit spring 10 fixedly connected to the side wall of the fixing block 7 is fixedly connected to the side wall of the sliding block 9.

Further, the sliding block 9 and the rectangular box 3 form a sliding structure through the pull rod 8 and the limit spring 10, and when the sliding block is in operation, the pull rod 8 is pulled to two sides to drive the sliding block 9 to overcome the elasticity of the limit spring 10 to move left and right.

Further, the connecting plate 5 forms a clamping structure with the rectangular box 3 through the pull rod 8, when in operation, the pull rod 8 is loosened, the limit spring 10 can restore the elasticity, so that the pull rod 8 is inserted back into the groove on the side wall of the connecting plate 5, and the filter screen 4 and the connecting plate 5 are fixed, thereby achieving the purpose of conveniently cleaning the filter screen 4.

Further, the top of the rectangular box 3 is provided with a sliding groove attached to the side wall of the sliding block 9, and in operation, the sliding of the sliding block 9 is limited by the sliding groove attached to the side wall of the sliding block 9.

Embodiment two: as shown in fig. 1, fig. 2 and fig. 4, the inside of the valve body 1 is provided with the insulating layer 11, the inner wall fixedly connected with the anticorrosive layer 12 of the insulating layer 11, the inner wall fixedly connected with the dead lever 13 of the anticorrosive layer 12, the one end fixedly connected with the piston cylinder 14 of dead lever 13, the inner wall sliding connection of the piston cylinder 14 has the piston 15, the lateral wall fixedly connected with of the piston 15 and the reset spring 16 fixedly connected with the inner wall of the piston cylinder 14, the lateral wall fixedly connected with the valve rod 17 of the piston 15, the lateral wall fixedly connected with the valve clack 18 of the valve rod 17, the lateral wall fixedly connected with the inlet tube 19 of the connecting tube 2, the lateral wall fixedly connected with the outlet tube 20 of the valve body 1, during operation, the rivers enter the connecting tube 2 through the inlet tube 19, flow into the valve body 1 through the filter screen 4, at this moment, the valve clack 18 promotes the valve rod 17 under the effect of rivers, make its piston 15 compress the elasticity of reset spring 16 and move along the inner wall of the piston cylinder 14, realize that the rivers through and flow to outlet tube 20, when the flow of rivers is less or stop, reset spring 16 can resume elasticity, make its 18 resume normal position, realize the valve body through the lateral wall fixedly connected with the valve clack 17, the valve clack, and the valve clack is made to have a sealing shape through setting up the valve clack, and the valve flap has improved.

Further, the fixing rods 13 are provided with four groups, the positions of the four groups of fixing rods 13 are distributed at equal intervals with respect to the outer wall of the piston cylinder 14, and in operation, the piston cylinder 14 is fixed by the four groups of fixing rods 13.

Further, the piston 15 and the piston cylinder 14 form a sliding structure through the valve rod 17 and the valve clack 18, and when in operation, the valve clack 18 pushes the valve rod 17 under the action of water flow, so that the piston 15 compresses the elastic force of the return spring 16 and moves along the inner wall of the piston cylinder 14.

Further, the valve clack 18 is tapered, and when the check valve works, the width of the valve clack 18 is increased by arranging the valve clack 18 to be tapered, so that the sealing reliability of the check valve is improved.

Working principle: when the high-temperature-resistant corrosion-resistant axial flow check valve is used, firstly, water flows into the connecting pipe 2 through the water inlet pipe 19 and flows into the valve body 1 through the filtering screen 4, at the moment, the valve clack 18 pushes the valve rod 17 under the action of the water flow, so that the piston 15 compresses the elastic force of the return spring 16 and moves along the inner wall of the piston cylinder 14, the water flows pass through and flow to the water outlet pipe 20, when the flow of the water flow is smaller or stops, the return spring 16 restores the elastic force, the valve clack 18 is restored to the original position through the piston 15 and the valve rod 17, the valve body 1 is plugged, the valve clack 18 is in a cone shape, the width of the valve clack is increased, and therefore, the sealing reliability of the check valve is improved; by arranging the anti-corrosion layer 12, the valve body 1 is prevented from being corroded by water, and the service life of the valve body 1 is prolonged.

When the impurity that filter screen 4 was filtered is too much, need wash filter screen 4, pull rod 8 to both sides makes it drive slider 9 overcome spacing spring 10's elasticity and control the removal this moment, through be provided with the spout that laminates mutually with slider 9 lateral wall on the top of rectangle case 3, play spacing purpose to slider 9's slip, when pull rod 8 kept away from connecting plate 5, take out the clearance from connecting pipe 2 filter screen 4 through handle 6, then insert the normal position with filter screen 4 after the clearance, loosen pull rod 8, spacing spring 10 can resume the elasticity, make its pull rod 8 insert back in the recess of connecting plate 5 lateral wall, fix filter screen 4 and connecting plate 5, thereby reach the purpose of being convenient for clear filter screen 4.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a high temperature resistant corrosion-resistant axial flow check valve, includes valve body (1), its characterized in that: the utility model discloses a valve body, including valve body (1), connecting pipe (2), outer wall fixedly connected with rectangle case (3) of connecting pipe (2), the inside of connecting pipe (2) is provided with filter screen (4) that run through with rectangle case (3) inside, the top fixedly connected with connecting plate (5) of filter screen (4), the top fixedly connected with handle (6) of connecting plate (5), the top fixedly connected with fixed block (7) of rectangle case (3), the inside of fixed block (7) is run through there is pull rod (8), the outer wall fixedly connected with slider (9) of pull rod (8), the lateral wall fixedly connected with of slider (9) and spacing spring (10) of fixed block (7) lateral wall fixedly connected with.

2. A high temperature and corrosion resistant axial flow check valve as defined in claim 1, wherein: the inside of valve body (1) is provided with insulating layer (11), the inner wall fixedly connected with anticorrosive coating (12) of insulating layer (11), the inner wall fixedly connected with dead lever (13) of anticorrosive coating (12), the one end fixedly connected with piston cylinder body (14) of dead lever (13), the inner wall sliding connection of piston cylinder body (14) has piston (15), the lateral wall fixedly connected with of piston (15) and reset spring (16) of piston cylinder body (14) inner wall fixedly connected, the lateral wall fixedly connected with valve rod (17) of piston (15), the lateral wall fixedly connected with valve clack (18) of valve rod (17), the lateral wall fixedly connected with inlet tube (19) of connecting pipe (2), the lateral wall fixedly connected with outlet pipe (20) of valve body (1).

3. A high temperature and corrosion resistant axial flow check valve as defined in claim 1, wherein: the sliding block (9) and the rectangular box (3) form a sliding structure through the pull rod (8) and the limiting spring (10).

4. A high temperature and corrosion resistant axial flow check valve as defined in claim 1, wherein: the connecting plate (5) and the rectangular box (3) form a clamping structure through a pull rod (8).

5. A high temperature and corrosion resistant axial flow check valve as defined in claim 1, wherein: the top of the rectangular box (3) is provided with a chute attached to the side wall of the sliding block (9).

6. A high temperature and corrosion resistant axial flow check valve as defined in claim 2, wherein: the fixing rods (13) are provided with four groups, and the positions of the four groups of fixing rods (13) are distributed at equal intervals relative to the outer wall of the piston cylinder body (14).

7. A high temperature and corrosion resistant axial flow check valve as defined in claim 2, wherein: the piston (15) and the piston cylinder (14) form a sliding structure through the valve rod (17) and the valve clack (18).

8. A high temperature and corrosion resistant axial flow check valve as defined in claim 2, wherein: the valve clack (18) is conical.