CN214946556U

CN214946556U - Fixing structure of low-temperature ball valve

Info

Publication number: CN214946556U
Application number: CN202121385611.4U
Authority: CN
Inventors: 李浩霆; 李斌
Original assignee: Chengdu Weideng Valve Technology Co ltd
Current assignee: Chengdu Weideng Valve Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-11-30
Anticipated expiration: 2031-06-22

Abstract

The utility model relates to a ball valve technical field just discloses a fixed knot of low temperature ball valve constructs, including the body, the circular port that runs through the body is seted up to the excircle department lateral wall of body, and the turn trough that is the arc form is seted up to the inside of body, and the inside of turn trough is rotated and is connected with the spheroid, and the seal groove that communicates each other with the turn trough is seted up at both ends around the inside wall of body, and the inside of two seal grooves is provided with the sealed piece that is the annular echelonment. The utility model discloses in, with the rotary trough and seal the space between the groove on fill up, because the flow of gas or liquid is not necessarily stable, when the flow is less, extruded part can resume on the sealed piece, promote the connecting block, and the sealed piece of rotary trough inside is by the part of extrusion inflation, because the part of extrusion inflation is too much, the sealed piece that is in the rotary trough inside can block in the inside of rotary trough, promote the sealed effect that the connecting block just can improve sealed piece through the flow of gas or liquid, the effect that improves life has been reached.

Description

Fixing structure of low-temperature ball valve

Technical Field

The utility model relates to a ball valve technical field especially relates to a fixed knot of low temperature ball valve constructs.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves.

The retrieved application number CN201621394795.X discloses a valve seat sealing structure of a ball valve, in particular to a valve seat sealing structure of a hard sealing ball valve. The ball valve comprises a valve body, a ball body, a valve seat sealing ring, a screw, a valve seat gland gasket, a valve seat gland, a spring support ring and a spring which are assembled together. Is characterized in that: the required spring is less, so the cost is low and the sealing effect is better. If the same number of springs is used, the sealing grade of the prior art structure can only be V grade, and the utility model discloses the sealing grade of structure can obtain VI grade.

However, the inventor finds that the technical scheme still has at least the following defects:

the disk seat sealing ring directly laminates with the spheroid, through spring extrusion disk seat sealing ring, reaches and improves sealed effect, but at the in-process of in-service use, the inside liquid of ball valve or gaseous state that is in the high flow rate for a long time, so the spring can be in the state of shrink always, when the inside velocity of flow of ball valve reduces, the spring can't resume the condition that leads to sealed effect to reduce and take place.

Therefore, a fixing structure of the low-temperature ball valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a fixed knot of low temperature ball valve constructs.

In order to realize the above-mentioned purpose, the utility model discloses a following technical scheme, a fixed knot of low temperature ball valve constructs, which comprises a body, the circular port that runs through the body is seted up to the excircle department lateral wall of body, the turn trough that is the arc form is seted up to the inside of body, the inside rotation of turn trough is connected with the spheroid, the seal groove that communicates each other with the turn trough is seted up at both ends around the inside wall of body, the inside of two seal grooves is provided with the sealed piece that is annular echelonment, the inside wall of two sealed pieces closely laminates with the lateral wall that the turn trough position corresponds respectively, the lateral wall of two sealed pieces all laminates with the inside wall of turn trough each other, the inside of body is provided with two connecting blocks that are the rectangle.

Preferably, two the equal fixed mounting in one end of connecting block that is close to the body inside wall has the connecting plate, the equal fixed mounting in one end that is close to the body inside wall on the connecting plate have with seal groove sliding connection's clamp plate, a lateral wall face that is close to the seal block on the clamp plate closely laminates with the seal block.

Preferably, two the equal fixed mounting of lateral wall of seal groove has the sealing strip that is annular "S" form, and the one end that is close to the center on two sealing strips links together with the lateral wall of turn trough, and the outside convex part on two sealing strips closely laminates with the inside wall of turn trough.

Preferably, the outer side wall of the body is fixedly provided with a bearing corresponding to the top wall surface of the ball body, and the inner side wall of the bearing is fixedly provided with a T-shaped rotating rod.

Preferably, the bottom end of the rotating rod penetrates through the outer side wall of the body, extends into the rotating groove, and is fixedly connected with the top end of the outer side wall of the ball body.

Preferably, a pyramid-shaped guide block is fixedly mounted on one side wall surface of each of the two adjacent connecting blocks.

Advantageous effects

The utility model provides a fixed knot of low temperature ball valve constructs. The method has the following beneficial effects:

(1) when liquid or gas flows in the body, the connecting block is arranged in the body, because the connecting block is rectangular, the contact area between the connecting block and the flowing gas or liquid is large, when the flowing liquid or gas in the body is in contact with the connecting block, the connecting block can be pushed to move along the gas, the connecting block is fixedly connected with a pressing plate through the connecting plate, the pressing plate is attached to the sealing groove, when the connecting block moves, the pressing plate moves along the sealing groove to press the sealing block, so that the sealing block is compressed, when the sealing block is pressed, the sealing block in the rotary groove can expand outwards, the sealing block is in an annular step shape, and a part which is enough to expand is arranged in the rotary groove to fill up a gap between the rotary groove and the sealing groove, because the flow of the gas or the liquid is not necessarily stable, when the flow is small, extruded part can resume on the sealed piece, promotes the connecting block, lets the connecting block resume the normal position, and the sealed piece of the inside of rotary trough is by the expanded part of extrusion, because the expanded part of extrusion is too much, is in the sealed piece of the inside of rotary trough and can block in the inside of rotary trough, can not resume, promotes the sealed effect that the connecting block just can improve sealed piece through the flow of gas or liquid, has reached the effect that improves life.

(2) The sealing strips are fixedly arranged on the two sealing blocks and are in an S shape, two ends of each sealing strip are fixedly connected with the sealing blocks and the side wall of the ball body respectively, the outer side wall of each sealing block is tightly attached to the inner side wall of the rotary groove, when the sealing blocks are extruded, the sealing strips can be compressed similarly, the sealing thickness is improved, and the sealing effect is further improved, the two connecting blocks are both pushed by gas or liquid in the body, the pushing directions of the two connecting blocks are the same, one connecting block can extrude the sealing blocks, the other connecting block can pull the sealing blocks, because the pressing plates are in sliding connection with the sealing grooves, the pressing plates can not slide due to the limitation of the sealing grooves, but the gas or liquid in the body can enter the sealing grooves, and the sealing blocks can be extruded from the outside through the blocking of the pressing plates, the sealing block is contracted towards the inside of the rotary groove, and the sealing block in the rotary groove is expanded, so that the effect of improving the sealing effect is achieved.

(3) This fixed knot of low temperature ball valve constructs, the equal fixed mounting of a lateral wall face that two connecting blocks approached mutually has the guide block that is the pyramid form, can outdiffusion when keeping away from on the lateral wall face of guide block on the inside gas of body or gaseous promotion connecting block, then continue forward promotion, gas or liquid can be close to the guide block, thereby improve the velocity of flow, when gas or liquid directly promote the guide block, with their diffusion of guiding all around through the guide block, reduce the influence to the velocity of flow, when having reached the sealed effect of improvement, reduce the loss of the velocity of flow.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

FIG. 1 is a front view of the present invention;

fig. 2 is a sectional view of the present invention;

fig. 3 is a front view of the sphere of the present invention.

Illustration of the drawings:

1. a body; 2. rotating the groove; 3. a sphere; 4. a bearing; 5. a rotating rod; 6. a sealing groove; 7. a sealing block; 8. a sealing strip; 9. connecting blocks; 10. a connecting plate; 11. a guide block; 12. and (7) pressing a plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): a fixing structure of a low-temperature ball valve is disclosed, as shown in figures 1-3, comprising a body 1, a circular hole penetrating through the body 1 is arranged on the outer side wall of the body 1, an arc-shaped rotating groove 2 is arranged in the body 1, a ball 3 is rotatably connected in the rotating groove 2, a bearing 4 corresponding to the top wall of the ball 3 is fixedly arranged on the outer side wall of the body 1, a T-shaped rotating rod 5 is fixedly arranged on the inner side wall of the bearing 4, the bottom end of the rotating rod 5 penetrates through the outer side wall of the body 1 and extends to the inside of the rotating groove 2 to be fixedly connected with the top end of the outer side wall of the ball 3, sealing grooves 6 communicated with the rotating groove 2 are arranged at the front end and the rear end of the inner side wall of the body 1, sealing blocks 7 in annular ladder shape are arranged in the two sealing grooves 6, the inner side walls of the two sealing blocks 7 are respectively and tightly attached to the outer side walls corresponding to the position of the rotating groove 2, the lateral wall of two sealed pieces 7 all laminates with the inside wall of turn trough 2 each other, the equal fixed mounting of the lateral wall of two seal grooves 6 has sealing strip 8 that is annular "S" form, the one end that is close to the center on two sealing strip 8 links together with the lateral wall of turn trough 2, the inside of two sealing strip 8 goes up outside convex part and the inside wall of turn trough 2 and closely laminates, the inside of body 1 is provided with two connecting blocks 9 that are the rectangle, the equal fixed mounting of the one end that is close to body 1 inside wall of two connecting blocks 9 has connecting plate 10, the equal fixed mounting of a lateral wall that two connecting blocks 9 approach mutually has guide block 11 that is the pyramid form, the equal fixed mounting of one end that is close to body 1 inside wall on connecting plate 10 has clamp plate 12 with seal groove 6 sliding connection, a lateral wall that is close to sealed piece 7 on clamp plate 12 closely laminates with sealed piece 7.

The utility model discloses a theory of operation:

when in use: when liquid or gas flows in the body 1, the connecting block 9 is arranged in the body 1, because the connecting block 9 is rectangular, the contact area between the connecting block 9 and the flowing gas or liquid is large, when the flowing liquid or gas in the body 1 contacts the connecting block 9, the connecting block 9 is pushed to move along the gas, the connecting block 9 is fixedly connected with a pressing plate 12 through a connecting plate 10, the pressing plate 12 is attached to the sealing groove 6, when the connecting block 9 moves, the pressing plate 12 moves along the sealing groove 6 to press the sealing block 7, so that the sealing block 7 is compressed, when the sealing block 7 is pressed, the sealing block 7 in the rotary groove 2 expands outwards, the sealing block 7 is in an annular step shape, a sufficient expansion part is arranged in the rotary groove 2 to fill the gap between the rotary groove 2 and the sealing groove 6, because the flow rate of the gas or liquid is not necessarily stable, when flow is less, the extruded part can resume on the sealed piece 7, promotes connecting block 9, lets connecting block 9 resume the normal position, and the sealed piece 7 of the inside of rotary trough 2 is by the expanded part of extrusion, because the expanded part of extrusion is too much, is in the sealed piece 7 of the inside of rotary trough 2 and can block in the inside of rotary trough 2, can not resume, promotes connecting block 9 through the flow of gas or liquid and just can improve the sealed effect of sealed piece 7, has reached the effect that improves life.

The two sealing blocks 7 are fixedly provided with the sealing strips 8, the sealing strips 8 are S-shaped, two ends of each sealing strip 8 are respectively fixedly connected with the sealing blocks 7 and the side wall of the ball body 3, the outer side walls of the sealing blocks 7 are tightly attached to the inner side walls of the rotary groove 2, when the sealing blocks 7 are extruded, the sealing strips 8 can be compressed, the sealing thickness is improved, and the sealing effect is further improved, the two connecting blocks 9 are both pushed by gas or liquid in the body 1, the pushing directions of the two connecting blocks 9 are the same, so that one connecting block 9 can extrude the sealing block 7, the other connecting block 9 can pull the sealing block 7, because the pressing plate 12 is in sliding connection with the sealing groove 6, the pressing plate 12 can not slide due to the limitation of the sealing groove 6, but the gas or liquid in the body 1 can enter the sealing groove 6 and be blocked by the pressing plate 12, the sealing block 7 can be extruded from the outside, so that the sealing block 7 contracts towards the inside of the rotary groove 2, and the sealing block 7 in the rotary groove 2 expands, thereby achieving the effect of improving the sealing effect.

Equal fixed mounting of a lateral wall face that two connecting blocks 9 are close to mutually has the guide block 11 that is the pyramid form, can outdiffusion when keeping away from on the lateral wall face of guide block 11 on body 1 inside gas or gaseous promotion connecting block 9, then continue forward promotion, gas or liquid can be close to guide block 11, thereby improve flow velocity, when gas or liquid directly promote guide block 11, with their diffusion of guiding all around through guide block 11, reduce the influence to flow velocity, when having reached the sealed effect of improvement, reduce the loss of velocity of flow.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fixed knot of low temperature ball valve constructs, includes body (1), its characterized in that: the circular port that runs through body (1) is seted up to the excircle department lateral wall of body (1), runner (2) that are the arc form are seted up to the inside of body (1), the inside rotation of runner (2) is connected with spheroid (3), seal groove (6) that communicate each other with runner (2) are seted up at both ends around the inside wall of body (1), the inside of two seal grooves (6) is provided with sealed piece (7) that are annular echelonment, the lateral wall that the inside wall of two sealed pieces (7) corresponds with runner (2) position respectively closely laminates, the lateral wall of two sealed pieces (7) all laminates each other with the inside wall of runner (2), the inside of body (1) is provided with two connecting blocks (9) that are the rectangle.

2. The fixing structure of a cryogenic ball valve according to claim 1, wherein: two the equal fixed mounting in one end that is close to body (1) inside wall of connecting block (9) has connecting plate (10), the equal fixed mounting in one end that is close to body (1) inside wall on connecting plate (10) have with seal groove (6) sliding connection's clamp plate (12), a lateral wall face that is close to sealed piece (7) on clamp plate (12) closely laminates with sealed piece (7).

3. The fixing structure of a cryogenic ball valve according to claim 1, wherein: two the equal fixed mounting of lateral wall of seal groove (6) has sealing strip (8) that are annular "S" form, and the one end that is close to the center on two sealing strips (8) links together with the lateral wall of turn trough (2), and outside convex part is closely laminated with the inside wall of turn trough (2) on two sealing strips (8).

4. The fixing structure of a cryogenic ball valve according to claim 1, wherein: the outer side wall of the body (1) is fixedly provided with a bearing (4) corresponding to the top wall surface of the ball body (3), and the inner side wall of the bearing (4) is fixedly provided with a rotating rod (5) shaped like a T.

5. The fixing structure of a cryogenic ball valve according to claim 4, wherein: the bottom end of the rotating rod (5) penetrates through the outer side wall of the body (1) and extends to the inside of the rotating groove (2) to be fixedly connected with the top end of the outer side wall of the ball body (3).

6. The fixing structure of a cryogenic ball valve according to claim 1, wherein: and pyramid-shaped guide blocks (11) are fixedly arranged on the side wall surfaces of the two connecting blocks (9) which approach each other.