CN219102039U - Leak-proof self-sealing valve - Google Patents

Abstract

The utility model relates to the field of valves and discloses an anti-leakage self-sealing valve which comprises a valve body, wherein the inner wall of the valve body is fixedly connected with a valve seat, the top end of the valve body is fixedly connected with a valve cover, the top end of the valve cover is rotationally connected with a valve rod extending into the valve body, the top end of the valve rod is fixedly connected with a hand wheel, the bottom end of the valve rod is fixedly connected with a valve core, two sides of the surface of the valve body are fixedly connected with connecting flanges, two sides of the valve body are movably connected with external pipelines, and one side of the surface of the external pipeline is fixedly connected with a fixing flange. This prevent leaking self sealss valve, after the case card is to the inside valve body that realizes of disk seat, the elasticity that can utilize fixed spring this moment for movable block descends and drives the closing plate and firmly closes on the disk seat top, is convenient for shelter from sealed on disk seat top, avoids case or sealing washer to take place wearing and tearing the back, leads to the decline with the inside leakproofness of disk seat, and then can avoid taking place to leak the phenomenon.

Description

Leak-proof self-sealing valve

Technical Field

The utility model relates to the field of valves, in particular to an anti-leakage self-sealing valve.

Background

The valve is a control component in the fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, splitting flow or overflow pressure relief and the like, and with the increasing development of the pipeline system industry in China, the demand of the valve is increased, and the demand of the valve is also increased, so that the valve has wide application in a plurality of industries at present.

In the chinese utility model patent: the utility model provides an authorized bulletin number CN214171366U is an anti-leakage self-sealing valve, which comprises a valve shell, there is the upper cover body valve housing upper end through bolt fixed mounting, upper cover body upper end threaded connection has the screw rod, screw rod upper end fixed mounting has the hand wheel, screw rod lower extreme screw thread runs through and extends to inside the valve housing, the inboard upper end fixed mounting of valve housing has the linkage, the inboard bottom fixed mounting of valve housing has the baffle, the empty slot has been seted up to the baffle inside, and this valve leak protection is effectual, is worth promoting.

The following problems exist in the prior art:

1. in the prior art, the valve is inconvenient to self-seal and leak-proof, after the sealing ring on the valve core is worn, the self-seal leak-proof performance is reduced, and after the flowing pressure of external media is large, the leakage of the media can be generated, so that the use of the valve is inconvenient.

2. In the prior art, the valve is inconvenient to limit and clamp, the valve is often connected with an external pipeline through a flange, the flange is needed to be connected with the aid of bolts and nuts, threads are easy to loosen after the valve is used for a long time, the valve body is not firmly connected with the external pipeline, and medium leakage is caused when the valve is severe.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an anti-leakage self-sealing valve which has the advantages of being convenient for self-sealing and leakage prevention, being convenient for anti-loosening treatment and the like, and solves the problems in the prior art.

(II) technical scheme

In order to achieve the purposes of self-sealing leakage prevention and limiting clamping, the utility model provides the following technical scheme: the utility model provides an anti-leakage self-sealing valve, includes the valve body, the inner wall fixedly connected with disk seat of valve body, the top fixedly connected with valve gap of valve body, the valve gap top rotates and is connected with the valve rod that extends to the valve body inside, the top fixedly connected with hand wheel of valve rod, the bottom fixedly connected with case of valve rod, the lower extreme swing joint of valve rod surface has self-sealing structure, the both sides fixedly connected with flange dish on valve body surface, the inside swing joint of flange dish has locking structure, one side swing joint of flange dish has lock nut, the both sides swing joint of valve body has outside pipeline, one side fixedly connected with fixed flange dish on outside pipeline surface, fixed flange dish one side swing joint has the locking bolt with lock nut matched with.

The self-sealing structure comprises a fixed box, fixed box fixed connection is at the lower extreme on valve rod surface, the fixed slot has been seted up to the inside of fixed box, the interior roof fixedly connected with fixed spring of fixed slot, fixed spring bottom fixedly connected with extends to the outside movable block of fixed box, the valve rod surface fixedly connected with closing plate of movable block bottom, after the valve core card is closed to the inside valve body realization valve body of disk seat, usable fixed spring's elasticity this moment for movable block descends and drives the closing plate and firmly closes on the disk seat top, is convenient for shelter from the seal to the disk seat top, avoids behind case or the sealing washer wearing and tearing, leads to the decline with the inside leakproofness of disk seat, and then can avoid taking place the outward leakage phenomenon.

Preferably, a sliding structure is formed between the sealing plate and the surface of the valve rod, and the top end of the sealing plate is fixedly connected with the bottom end of the movable block, so that the sealing plate can be conveniently and tightly covered on the top end of the valve seat under the action of the elastic force of the fixed spring.

Preferably, a limit groove is formed in the fixing box on one side of the fixing groove, and a limit block matched with the limit groove is fixedly connected to one side of the movable block, so that the movable block can slide up and down more stably.

Preferably, the movable block is in a sliding structure through the process between the limit block and the inside of the limit groove, and four movable blocks are distributed at equal angles, so that the movable block is convenient to be fixedly connected with the sealing plate, and the connection tightness of the movable block and the sealing plate is improved.

Preferably, the surface of the valve core is fixedly connected with a sealing ring, the shape of the top view of the sealing ring is O-shaped, the sealing performance of the valve core clamped inside the valve seat is improved, and the leakage phenomenon is avoided.

Preferably, the locking structure includes the constant head tank, the constant head tank is offered around inside flange dish, and flange dish surface swing joint has the locating lever that extends to the constant head tank inside, locating lever bottom fixedly connected with extends to the outside locating piece of constant head tank, and the locating lever surface winding of locating piece one end has positioning spring, locking bolt inside one side offered with locating piece matched with locating hole, through locking bolt and lock nut, realize the installation between flange dish and the fixed flange dish after, reuse positioning spring's elasticity for the locating piece decline card is inside to the locating hole, and then can avoid the rotation or the removal of locking bolt, further improves the installation fastness between flange dish and the fixed flange dish, improves the fastening effect that outside pipeline and valve body are connected.

Preferably, a clamping structure is formed between the positioning block and the inside of the positioning hole, and the height of the positioning block is smaller than the depth of the inside of the positioning groove, so that the positioning block has enough moving space to be capable of moving to be completely separated from the inside of the positioning hole.

Preferably, the lower extreme fixedly connected with rubber piece of valve body inner wall one side, and the shape of rubber piece is the arc, when reducing the medium inflow valve body inside, because of the too fast wearing and tearing that lead to the valve body inner wall of velocity of flow, extension valve body's life.

Advantageous effects

Compared with the prior art, the utility model provides an anti-leakage self-sealing valve, which comprises the following components

The beneficial effects are that:

1. this prevent leaking self sealss valve, through the self sealss structure that sets up, when the case card is to the inside valve body of realizing of disk seat, the closing plate can be covered on the disk seat top and make movable block slip compression fixed spring, and then the elasticity of usable fixed spring for the movable block descends and drives the closing plate and firmly covers on the disk seat top, be convenient for to the shielding seal on disk seat top, avoid case or sealing washer to take place wearing and tearing after, lead to the decline with the inside leakproofness of disk seat, and then can avoid taking place leaking the phenomenon, guarantee the high-efficient leakproofness of valve body, improve its practicality, thereby solve inconvenient self sealss leak protection's problem.

2. This prevent leaking self sealss valve through the locking structure that sets up, through lock bolt and lock nut, realizes that the installation between flange dish and the fixed flange dish is fixed, the elasticity of reuse positioning spring for the locating piece descends the card to the locating hole inside, and then can avoid lock bolt's rotation or removal, further improve the installation fastness between flange dish and the fixed flange dish, reducible lock bolt rotates simultaneously and the screw thread between the lock nut becomes flexible the possibility, improves the fastening effect that outside pipeline and valve body are connected, and then can avoid leading to the possibility that the medium leaked because of the installation is not hard up between outside pipeline and the valve body, thereby solve inconvenient spacing chucking's problem.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic side sectional view of the present utility model;

FIG. 3 is a schematic view of a three-dimensional structure of a valve core of the present utility model;

FIG. 4 is a schematic view of a partially enlarged structure of the self-sealing structure of the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

In the figure: 1. a hand wheel; 2. a valve cover; 3. a self-sealing structure; 301. a fixed box; 302. a sealing plate; 303. a movable block; 304. a fixing groove; 305. a fixed spring; 306. a limiting block; 307. a limit groove; 4. an outer pipe; 5. a locking bolt; 6. an anti-loosening structure; 601. a positioning rod; 602. a positioning block; 603. positioning holes; 604. a positioning spring; 605. a positioning groove; 7. a valve body; 8. a valve core; 9. a seal ring; 10. a rubber block; 11. a lock nut; 12. a connecting flange plate; 13. a valve seat; 14. a fixed flange; 15. a valve rod.

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.

Example 1

The preferred embodiments of the leak-proof self-sealing valve provided by the present utility model are shown in fig. 1 to 5: the utility model provides an anti-leakage self-sealing valve, including valve body 7, the inner wall fixedly connected with disk seat 13 of valve body 7, the top fixedly connected with valve gap 2 of valve body 7, valve gap 2 top rotation is connected with the valve rod 15 that extends to the inside of valve body 7, the top fixedly connected with hand wheel 1 of valve rod 15, the bottom fixedly connected with case 8 of valve rod 15, the lower extreme swing joint on valve rod 15 surface has self-sealing structure 3, the both sides fixedly connected with flange dish 12 on valve body 7 surface, the inside swing joint of flange dish 12 has locking structure 6, one side swing joint of flange dish 12 has lock nut 11, the both sides swing joint of valve body 7 has outside pipeline 4, one side fixedly connected with mounting flange dish 14 on outside pipeline 4 surface, mounting flange dish 14 one side swing joint has lock bolt 5 with lock nut 11 matched with.

The self-sealing structure 3 comprises a fixed box 301, the lower end on the surface of a valve rod 15 is fixedly connected with the fixed box 301, a fixed groove 304 is formed in the fixed box 301, a fixed spring 305 is fixedly connected to the inner top wall of the fixed groove 304, a movable block 303 extending to the outer portion of the fixed box 301 is fixedly connected to the bottom end of the fixed spring 305, a sealing plate 302 is fixedly connected to the surface of the valve rod 15 at the bottom end of the movable block 303, after the valve body 7 is closed towards the inner portion of a valve seat 13 by means of clamping of a valve core 8, the elastic force of the fixed spring 305 can be utilized at this moment, the movable block 303 descends to drive the sealing plate 302 to firmly cover the top end of the valve seat 13, shielding and sealing of the top end of the valve seat 13 is facilitated, so that the inner tightness of the valve seat 13 is reduced after abrasion of the valve core 8 or a sealing ring 9 is avoided, and the leakage phenomenon can be avoided.

In this embodiment, a sliding structure is formed between the sealing plate 302 and the surface of the valve rod 15, and the top end of the sealing plate 302 is fixedly connected with the bottom end of the movable block 303, so that the sealing plate 302 can be conveniently and tightly covered on the top end of the valve seat 13 under the elastic force of the fixed spring 305 through the sliding of the sealing plate 302 on the surface of the valve rod 15.

In this embodiment, a limiting groove 307 is formed inside the fixed box 301 at one side of the fixed groove 304, and a limiting block 306 matched with the limiting groove 307 is fixedly connected to one side of the movable block 303, so that the movable block 303 slides up and down more stably by sliding the limiting block 306 inside the limiting groove 307.

In this embodiment, the movable blocks 303 are in sliding structure through the process between the limiting blocks 306 and the inside of the limiting grooves 307, and the movable blocks 303 are distributed in four equal angles, so that the movable blocks 303 are distributed in four equal angles, and the movable blocks 303 are convenient to be fixedly connected with the sealing plate 302, so that the connection tightness of the movable blocks and the sealing plate is improved.

In this embodiment, the surface of the valve core 8 is fixedly connected with the sealing ring 9, and the shape of the top view of the sealing ring 9 is O-shaped, and by setting the O-shaped sealing ring 9, the tightness of the valve core 8 clamped inside the valve seat 13 is improved, and the leakage phenomenon is avoided.

Example 2

On the basis of embodiment 1, a preferred embodiment of the leak-proof self-sealing valve provided by the present utility model is shown in fig. 1 to 5: the locking structure 6 includes the constant head tank 605, the constant head tank 605 is offered around the inside of flange 12, and flange 12 surface swing joint has the locating lever 601 that extends to the inside of constant head tank 605, locating lever 601 bottom fixedly connected with extends to the outside locating piece 602 of constant head tank 605, and the winding of locating lever 601 surface of locating piece 602 one end has positioning spring 604, locking bolt 5 inside one side offered with locating piece 602 matched with locating hole 603, through locking bolt 5 and lock nut 11, realize that flange 12 and flange 14 between the installation fixed, reuse positioning spring 604's elasticity, make locating piece 602 decline card to the locating hole 603 inside, and then can avoid locking bolt 5's rotation or removal, further improve the installation fastness between flange 12 and the flange 14, improve the fastening effect that outside pipeline 4 and valve body 7 are connected.

In this embodiment, a locking structure is formed between the positioning block 602 and the inside of the positioning hole 603, and the height of the positioning block 602 is smaller than the depth of the inside of the positioning slot 605, and by setting the deeper positioning slot 605, the positioning block 602 has enough moving space to be able to move to be completely separated from the inside of the positioning hole 603.

In addition, the lower extreme fixedly connected with rubber piece 10 of valve body 7 inner wall one side, and the shape of rubber piece 10 is the arc, through setting up curved rubber piece 10, when reducing the medium inflow valve body 7 inside, because of the too fast wearing and tearing that lead to valve body 7 inner wall of velocity of flow, extension valve body 7's life.

When the locking device is used, the positioning rod 601 is pulled to drive the positioning spring 604 to be compressed upwards until the positioning spring 604 completely enters the positioning groove 605, then the positioning rod 601 is loosened after the installation and fixation between the connecting flange plate 12 and the fixed flange plate 14 are realized through the locking bolt 5 and the locking nut 11, the positioning rod 602 is enabled to be downwards clamped into the positioning hole 603 by utilizing the elasticity of the positioning spring 604, further the rotation or the movement of the locking bolt 5 can be avoided, the installation firmness between the connecting flange plate 12 and the fixed flange plate 14 is further improved, meanwhile, the possibility of loosening of threads between the rotation of the locking bolt 5 and the locking nut 11 can be reduced, and further the possibility of medium leakage caused by installation looseness between the external pipeline 4 and the valve body 7 can be avoided;

then medium enters the valve body 7 through the external pipeline 4, at the moment, when the medium flows into the valve body 7, the arc-shaped rubber block 10 can be utilized, so that the abrasion of the inner wall of the valve body 7 caused by the too high flow speed is reduced, the service life of the valve body 7 is prolonged, and the medium flows from the valve seat 13 to the upper part of the valve body 7 and is conveyed out again through the external pipeline 4;

when the valve body 7 needs to be closed, the hand wheel 1 can be rotated to drive the valve rod 15 to rotate, so that the valve core 8 is clamped into the valve seat 13, the sealing performance of the valve core 8 clamped into the valve seat 13 is improved by using the O-shaped sealing ring 9, when the valve core 8 is clamped into the valve seat 13 to realize the closing of the valve body 7, the sealing plate 302 can be covered on the top end of the valve seat 13, the movable block 303 can slide in the fixed groove 304 to compress the fixed spring 305, the elasticity of the fixed spring 305 can be used, the movable block 303 can be lowered to drive the sealing plate 302 to firmly cover the top end of the valve seat 13, the top end of the valve seat 13 is conveniently shielded and sealed, the phenomenon of external leakage can be avoided because the sealing performance of the sealing plate 8 or the sealing ring 9 is reduced inside the valve seat 13 after abrasion is avoided.

In sum, the anti-leakage self-sealing valve can improve the sealing effect on the valve seat 13, avoid the leakage phenomenon caused by abrasion of the valve core 8 or the sealing ring 9, improve the tightness of the installation between the external pipeline 4 and the valve body 7, and avoid the leakage of a medium from the connecting part caused by looseness.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an leak protection self sealss valve, includes valve body (7), its characterized in that: the valve is characterized in that a valve seat (13) is fixedly connected to the inner wall of the valve body (7), a valve cover (2) is fixedly connected to the top end of the valve body (7), a valve rod (15) extending to the inside of the valve body (7) is rotationally connected to the top end of the valve cover (2), a hand wheel (1) is fixedly connected to the top end of the valve rod (15), a valve core (8) is fixedly connected to the bottom end of the valve rod (15), a self-sealing structure (3) is movably connected to the lower end of the surface of the valve rod (15), connecting flanges (12) are fixedly connected to the two sides of the surface of the valve body (7), locking structures (6) are movably connected to the inner sides of the connecting flanges (12), locking nuts (11) are movably connected to one side of the connecting flanges (12), an outer pipeline (4) is movably connected to one side of the surface of the outer pipeline (4), and a locking bolt (5) matched with the locking nuts (11) is movably connected to one side of the fixing flange (14).

The self-sealing structure (3) comprises a fixed box (301), the fixed box (301) is fixedly connected to the lower end of the surface of the valve rod (15), a fixed groove (304) is formed in the fixed box (301), a fixed spring (305) is fixedly connected to the inner top wall of the fixed groove (304), a movable block (303) extending to the outer portion of the fixed box (301) is fixedly connected to the bottom end of the fixed spring (305), and a sealing plate (302) is fixedly connected to the surface of the valve rod (15) at the bottom end of the movable block (303).

2. The leak-proof self-sealing valve as defined in claim 1, wherein: a sliding structure is formed between the sealing plate (302) and the surface of the valve rod (15), and the top end of the sealing plate (302) is fixedly connected with the bottom end of the movable block (303).

3. The leak-proof self-sealing valve as defined in claim 1, wherein: a limiting groove (307) is formed in the fixing box (301) on one side of the fixing groove (304), and a limiting block (306) matched with the limiting groove (307) is fixedly connected to one side of the movable block (303).

4. A leak-proof self-sealing valve as defined in claim 3, wherein: the movable block (303) is in a sliding structure in the process between the limiting block (306) and the inside of the limiting groove (307), and four movable blocks (303) are distributed at equal angles.

5. The leak-proof self-sealing valve as defined in claim 1, wherein: the surface of the valve core (8) is fixedly connected with a sealing ring (9), and the shape of the top view of the sealing ring (9) is O-shaped.

6. The leak-proof self-sealing valve as defined in claim 1, wherein: locking structure (6) are including constant head tank (605), constant head tank (605) are offered around inside flange (12), and flange (12) surface swing joint has locating lever (601) that extend to inside constant head tank (605), locating lever (601) bottom fixedly connected with extends to locating piece (602) outside constant head tank (605), and locating lever (601) surface winding of locating piece (602) one end has positioning spring (604), locating hole (603) with locating piece (602) matched with are offered to inside one side of locking bolt (5).

7. The leak-proof self-sealing valve as defined in claim 6, wherein: a clamping structure is formed between the positioning block (602) and the inside of the positioning hole (603), and the height of the positioning block (602) is smaller than the depth of the inside of the positioning groove (605).

8. The leak-proof self-sealing valve as defined in claim 1, wherein: the lower end of one side of the inner wall of the valve body (7) is fixedly connected with a rubber block (10), and the shape of the rubber block (10) is arc-shaped.

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