CN215596483U

CN215596483U - High-temperature-resistant check valve

Info

Publication number: CN215596483U
Application number: CN202121451339.5U
Authority: CN
Inventors: 黄吴平
Original assignee: Quanzhou Elite Valve Industry Co ltd
Current assignee: Quanzhou Elite Valve Industry Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-21
Anticipated expiration: 2031-06-29

Abstract

The utility model belongs to the technical field of check valves, and particularly relates to a high-temperature-resistant check valve which comprises a valve body and a sealing block, wherein a first channel and a second channel are respectively arranged on the surfaces of two sides of the valve body, and a high-temperature-resistant anti-corrosion layer is fixedly sleeved on the inner wall of the valve body. This high temperature resistant check valve, inner wall through setting up ring groove is provided with guiding orientation device, and guiding orientation device is including annular fixture block, the surface of annular fixture block and ring groove's inner wall activity joint, it is corrosion-resistant to have anti high temperature, prevent the effect of liquid backward flow, current check valve has been solved under the condition of carrying high temperature or corrosive liquid for a long time, the case is easily destroyed by high temperature or is corroded and reveals, thereby easily lead to the liquid backward flow, and lack direction and location structure between case and the disk seat, the skew appears when easily making both contacts, easily produce sealed space, thereby easily lead to the liquid backward flow, cause engineering disasters' problem.

Description

High-temperature-resistant check valve

Technical Field

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

Background

The check valve is a valve which automatically opens and closes a valve clack depending on the flow of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve.

The existing check valve has the advantages that under the condition of conveying high temperature or corrosive liquid for a long time, the valve core is easy to be damaged by high temperature or corroded to leak, so that liquid backflow is easy to cause, a guiding structure and a positioning structure are lacked between the valve core and the valve seat, the valve core and the valve seat are easy to deviate when in contact, a sealing gap is easy to generate, and liquid backflow is easy to cause the problem of engineering disasters.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-temperature-resistant check valve, which is based on the technical problems that a valve core is easy to be damaged by high temperature or corroded and leaked under the condition of conveying high-temperature or corrosive liquid for a long time, so that liquid backflow is easy to cause, a guide and positioning structure is lacked between the valve core and a valve seat, the valve core and the valve seat are easy to deviate when contacting, a sealing gap is easy to generate, so that liquid backflow is easy to cause, and engineering disasters are caused.

The utility model provides a high-temperature-resistant check valve which comprises a valve body and a sealing block, wherein a first channel and a second channel are respectively arranged on the surfaces of two sides of the valve body;

the inner wall of the annular clamping groove is provided with a guiding and positioning device, the guiding and positioning device comprises an annular clamping block, and the outer surface of the annular clamping block is movably clamped with the inner wall of the annular clamping groove.

Preferably, the high-temperature-resistant anti-corrosion layer is made of polytetrafluoroethylene materials, a filter screen is fixedly sleeved on the inner wall of the annular fixture block, an annular sealing groove is formed in the surface of one side of the sealing block, a sealing ring is fixedly sleeved on the inner wall of the annular sealing groove, the outer surface of the sealing ring is higher than the surface of one side of the sealing block, and the surface of one side of the sealing block is in extrusion contact with the surface of the other side of the sealing ring;

through above-mentioned technical scheme, sealed piece all uses high temperature resistant anticorrosive metal material with the sealing ring to make, and the cooperation of ring groove and annular fixture block is used, plays the effect of being convenient for dismantle the filter screen.

Preferably, the outer surface of each sealing block is provided with a guide sliding chute, the inner walls of the guide sliding chutes are connected with guide sliding blocks in a sliding manner, and the surface of one side of each guide sliding block is fixedly connected with a positioning rod;

through above-mentioned technical scheme, the direction spout uses with direction slider cooperation locating lever, plays the stability when improving the sealing block and remove.

Preferably, the surface of one end of the positioning rod is fixedly connected with the inner wall of the valve body, the surface of the other side of the sealing block is fixedly connected with a guide post, the outer surface of the guide post is movably sleeved with a guide ring, and the outer surface of the guide ring is fixedly connected with a fan-shaped fixed block;

through above-mentioned technical scheme, the cooperation of guide post and guide ring is used, plays the horizontal stability when further improving sealed piece and removing.

Preferably, the fan-shaped fixed blocks are distributed in an annular array by taking the axis of the guide ring as the center, and the outer surfaces of the fan-shaped fixed blocks are fixedly connected with the inner wall of the valve body;

through above-mentioned technical scheme, fan-shaped fixed block plays support and fixed to the guide ring.

Preferably, the surface of one side of the guide ring is fixedly connected with a return spring, and the free ends of one ends of the return springs are fixedly connected with the surface of the other side of the sealing block;

through above-mentioned technical scheme, reset spring plays the effect that drives sealed piece and reset and remove.

The beneficial effects of the utility model are as follows:

inner wall through setting up ring groove is provided with guiding orientation device, and guiding orientation device is including annular fixture block, the surface of annular fixture block and ring groove's inner wall activity joint, reached and to have anti high temperature corrosion-resistant, prevent the effect of liquid backward flow, current check valve has been solved under the condition of carrying high temperature or corrosive liquid for a long time, the case is easily destroyed by high temperature or is corroded and reveals, thereby easily lead to the liquid backward flow, and lack direction and location structure between case and the disk seat, the skew appears when easily making both contacts, easily produce sealed space, thereby easily lead to the liquid backward flow, cause engineering disasters' problem.

Drawings

FIG. 1 is a schematic view of a high temperature resistant check valve;

FIG. 2 is a perspective view of a sealing block structure of a high temperature resistant check valve;

FIG. 3 is a sectional view of a valve body structure of a high temperature resistant check valve

FIG. 4 is an enlarged view of the structure of the high temperature check valve at A in FIG. 3;

fig. 5 is an exploded view of a seal block structure of a high temperature resistant check valve.

In the figure: 1. a valve body; 2. a sealing block; 3. a first channel; 4. a second channel; 5. a high temperature resistant, corrosion resistant layer; 6. a seal ring; 7. an annular neck; 8. an annular fixture block; 81. a filter screen; 82. an annular seal groove; 83. a seal ring; 84. a guide chute; 85. a guide slider; 86. positioning a rod; 87. a guide post; 88. a guide ring; 89. a fan-shaped fixed block; 810. a return spring.

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.

Referring to fig. 1-5, a high temperature resistant check valve comprises a valve body 1 and a sealing block 2, wherein a first channel 3 and a second channel 4 are respectively arranged on the two side surfaces of the valve body 1, a high temperature resistant anti-corrosion layer 5 is fixedly sleeved on the inner wall of the valve body 1, polytetrafluoroethylene is arranged inside the high temperature resistant anti-corrosion layer 5, a sealing ring 6 is fixedly sleeved on the inner wall of the valve body 1, and an annular clamping groove 7 is arranged on one side surface of the sealing ring 6;

the inner wall of the annular clamping groove 7 is provided with a guiding and positioning device, the guiding and positioning device comprises an annular clamping block 8, and the outer surface of the annular clamping block 8 is movably clamped with the inner wall of the annular clamping groove 7.

Further, high temperature resistant anticorrosion layer 5 is made by polytetrafluoroethylene material, filter screen 81 has been cup jointed to the inner wall of annular fixture block 8 is fixed, annular seal groove 82 has been seted up to a side surface of seal block 2, seal ring 83 has been cup jointed to the inner wall of annular seal groove 82 is fixed, the surface of seal ring 83 is higher than a side surface of seal block 2, a side surface of seal block 2 and the opposite side surface extrusion contact of sealing ring 6, seal block 2 all uses high temperature resistant anticorrosive metal material with sealing ring 6 to make, ring groove 7 uses with the cooperation of annular fixture block 8, play the effect of being convenient for dismantle filter screen 81.

Further, the direction spout 84 has all been seted up to the surface of sealed piece 2, and the equal sliding connection of the inner wall of a plurality of direction spouts 84 has guide slider 85, and the equal fixedly connected with locating lever 86 in a side surface of a plurality of guide slider 85, guide spout 84 and guide slider 85 cooperate locating lever 86 to use, play the stability when improving sealed piece 2 and remove.

Further, the one end surface of locating lever 86 all with valve body 1's inner wall fixed connection, the opposite side fixed surface of sealed piece 2 is connected with guide post 87, guide ring 88 has been cup jointed in the surface activity of guide post 87, the fan-shaped fixed block 89 of the equal fixedly connected with in surface of guide ring 88, guide post 87 uses with the cooperation of guide ring 88, plays the horizontal stability when further improving sealed piece 2 and remove.

Further, fan-shaped fixed block 89 all uses the axis of guide ring 88 to be the annular array distribution as the center, and the surface of a plurality of fan-shaped fixed blocks 89 all with the inner wall fixed connection of valve body 1, fan-shaped fixed block 89 plays support and fixed to guide ring 88.

Further, the equal fixedly connected with reset spring 810 in a side surface of guide ring 88, the one end free end of a plurality of reset springs 810 all with the other side fixed surface of seal block 2 be connected, reset spring 810 plays the effect that drives seal block 2 and reset and remove.

Inner wall through setting up ring groove 7 is provided with guiding orientation device, and guiding orientation device is including annular fixture block 8, the surface of annular fixture block 8 and ring groove 7's inner wall activity joint, reached to have high temperature resistant corrosion-resistant, prevent the effect of liquid backward flow, current check valve has been solved under the condition of carrying high temperature or corrosive liquid for a long time, the case is easily destroyed by high temperature or is corroded and reveals, thereby easily lead to the liquid backward flow, and lack direction and location structure between case and the disk seat, the skew appears when easily making both contacts, easily produce sealed space, thereby easily lead to the liquid backward flow, cause the problem of engineering disasters.

The working principle is as follows: high temperature resistant anti-corrosion coating 5 plays and protects 1 inside of valve body, liquid gets into valve body 1 through first passageway 3, rethread filter screen 81 filters impurity, the pressure that the liquid flow produced this moment makes sealed piece 2 remove, sealed piece 2 cooperates locating lever 86 steady movement through direction spout 84 and direction slider 85, it makes sealed piece 2 horizontal spacing removal to drive guide post 87 cooperation guide ring 88 simultaneously, sealed piece 2 drives sealing washer 83 and removes to 6 after-separating with the sealing ring. At this moment, the reset spring 810 begins to contract, liquid flows into the valve body 1 through the inner wall of the sealing ring 6 and then flows out of the valve body 1 through the second channel 4, when pressure generated by liquid flowing disappears, the reset spring 810 drives the sealing block 2 and the guide post 87 to reset and move, the sealing block 2 is matched with the positioning rod 86 to stably move through the guide sliding groove 84 and the guide sliding block 85, the sealing block 2 drives the sealing ring 83 to move until the sealing ring is in extrusion contact with the sealing ring 6, and at this moment, the liquid stops flowing.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a high temperature resistant check valve, includes valve body (1) and sealed piece (2), its characterized in that: the valve comprises a valve body (1), wherein a first channel (3) and a second channel (4) are respectively formed in the surfaces of the two sides of the valve body (1), a high-temperature-resistant anti-corrosion layer (5) is fixedly sleeved on the inner wall of the valve body (1), a sealing ring (6) is fixedly sleeved on the inner wall of the valve body (1), and an annular clamping groove (7) is formed in the surface of one side of the sealing ring (6);

the inner wall of ring groove (7) is provided with guiding and positioning device, and guiding and positioning device is including annular fixture block (8), the surface of annular fixture block (8) with the inner wall activity joint of ring groove (7).

2. A high temperature resistant check valve as defined in claim 1 wherein: high temperature resistant anticorrosion layer (5) are made by polytetrafluoroethylene material, filter screen (81) have been cup jointed to the inner wall of annular fixture block (8) is fixed, annular seal groove (82) have been seted up on a side surface of sealed piece (2), sealing washer (83) have been cup jointed to the inner wall of annular seal groove (82), the surface of sealing washer (83) is higher than a side surface of sealed piece (2), a side surface of sealed piece (2) with the opposite side surface extrusion contact of sealing ring (6).

3. A high temperature resistant check valve as defined in claim 1 wherein: the surface of sealing piece (2) has all been seted up direction spout (84), and is a plurality of the equal sliding connection of inner wall of direction spout (84) has direction slider (85), and is a plurality of the equal fixedly connected with locating lever (86) in one side surface of direction slider (85).

4. A high temperature resistant check valve as defined in claim 3 wherein: a plurality of the one end surface of locating lever (86) all with the inner wall fixed connection of valve body (1), the opposite side fixed surface of sealed piece (2) is connected with guide post (87), the surface activity of guide post (87) has cup jointed guide ring (88), the equal fixedly connected with fan-shaped fixed block (89) of surface of guide ring (88).

5. The high temperature resistant check valve of claim 4, wherein: a plurality of fan-shaped fixed block (89) all use the axis of guide ring (88) to be the annular array distribution as the center, a plurality of the surface of fan-shaped fixed block (89) all with the inner wall fixed connection of valve body (1).

6. The high temperature resistant check valve of claim 4, wherein: the surface of one side of guide ring (88) all fixedly connected with reset spring (810), a plurality of the one end free end of reset spring (810) all with the opposite side fixed surface of sealing block (2) is connected.