CN219345535U

CN219345535U - Leakage-proof stop valve

Info

Publication number: CN219345535U
Application number: CN202320332838.5U
Authority: CN
Inventors: 蹇福丙; 王渊; 杜鹏
Original assignee: Chongqing Yuhong Intelligent Technology Co ltd
Current assignee: Chongqing Yuhong Intelligent Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-14
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses a leakage-proof stop valve, which relates to the technical field of stop valves, and is characterized in that through the arrangement of an elastic sealing ring, when a through hole on a valve seat is closed by the lower end of a valve clack under the pressure action of a valve rod, flexible sealing is realized between the valve clack and an inclined surface of the valve seat, so that the mutual abrasion between the valve clack and the valve seat is reduced to a great extent, meanwhile, the deformation degree of the elastic sealing ring is increased by a deformation hole, so that the elastic sealing ring is easier to be attached to the inner side wall of the through hole of the valve seat, when the inner side wall of the through hole of the valve seat is worn by a conveying medium, the elastic sealing ring can realize a good sealing effect under the action of the pressure again, and the elastic sealing ring can be replaced in time when worn, compared with the replacement of the whole valve clack, the maintenance cost of the stop valve is reduced, and meanwhile, the structural strength of the edge of the valve clack is enhanced, so that the valve clack is not easy to deform, and the condition of medium leakage is avoided.

Description

Leakage-proof stop valve

Technical Field

The utility model belongs to the technical field of stop valves, and particularly relates to a leakage-proof stop valve.

Background

The stop valve belongs to a forced sealing valve, most of the bottom surface of the valve clack of the stop valve at the present stage is conical, and the stop valve is sealed by abutting and compacting the conical surface on the valve clack and the conical surface on the valve sleeve.

After the stop valve is used for a long time, the conical surface of the valve clack and the through hole of the valve seat are easily affected by conveying media to be worn, the worn valve clack cannot completely close the through hole of the valve seat, the condition of medium leakage occurs, and if the valve clack of the stop valve or the stop valve needs to be replaced after the wear occurs, the maintenance cost is high.

Disclosure of Invention

The utility model aims to provide a leakage-proof stop valve, which solves the problems that the conical surface of a valve clack and a through hole of a valve seat are easy to be worn by conveying media after the conventional stop valve is used for a long time, the worn valve clack cannot completely close the through hole of the valve seat, the condition of medium leakage occurs, and the stop valve or the valve clack of the stop valve needs to be replaced after the abrasion occurs, and the maintenance cost is high.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a leakage-proof stop valve, which comprises a stop valve body, wherein the stop valve body comprises a valve rod, a valve clack and a valve seat, a through hole is formed in the valve seat, the valve rod drives the valve clack to do linear motion in the vertical direction, the valve clack closes the through hole in the valve seat, the lower end of the valve clack is in a frustum shape, an elastic sealing ring is detachably and fixedly embedded on an inclined plane at the lower end of the valve clack, a deformation hole is formed in the elastic sealing ring, and the outer wall of the elastic sealing ring is abutted against the inner side wall of the through hole in the valve seat.

Further, the inclined plane of valve clack lower extreme is seted up the mounting groove, and the elastic sealing ring can dismantle the fixed embedding and locate in the mounting groove, and the width after the elastic sealing ring compression is bigger than the distance between the mounting groove inner wall to the inner wall of through-hole on the disk seat.

Further, the outer side wall of the elastic sealing ring is parallel to the frustum side wall at the lower end of the valve clack and the inner side wall of the through hole on the valve seat.

Further, the upper surface of the valve clack is integrally formed with a reinforcing rib, and the reinforcing rib is positioned at the edge of the upper end of the valve clack.

Further, the valve clack upper surface is fixed with through the bolt and props the cover, props the cover upper end butt cover and establishes in the valve rod lower extreme, props cover lower extreme lateral wall and strengthening rib inside wall and supports tightly.

Further, the stop valve body further comprises a valve body, a filling valve cover and a hand wheel, the upper end of the valve body is provided with an opening, the filling valve cover is fixedly connected with the upper end of the valve body through a sealing flange and is communicated with the opening at the upper end of the valve body, the valve rod movably penetrates through the upper end of the filling valve cover to form sealing, the hand wheel is rotationally connected with the upper end of the filling valve cover, and the valve seat is fixedly connected with the inner wall of the valve body and separates the valve body into a left chamber and a right chamber.

The utility model has the following beneficial effects:

1. according to the utility model, through the arrangement of the elastic sealing ring, when the lower end of the valve clack closes the through hole on the valve seat under the pressure action of the valve rod, flexible sealing is realized between the valve clack and the inclined surface of the valve seat, so that the mutual abrasion between the valve clack and the valve seat is reduced to a great extent, meanwhile, the deformation degree of the elastic sealing ring is increased by the deformation hole, so that the elastic sealing ring is more easily attached to the inner side wall of the through hole of the valve seat, when the inner side wall of the through hole of the valve seat is worn by a conveying medium, a good sealing effect can be realized under the action of the elastic sealing ring, and the elastic sealing ring can be replaced in time when being worn, so that compared with the replacement of the whole valve clack, the maintenance cost of the stop valve is greatly reduced, and the good leakage prevention effect is realized.

2. According to the utility model, the structural strength of the edge of the valve clack is enhanced by the reinforcing ribs, so that the edge of the valve clack is not easy to deform under pressure, the valve clack has stronger pressure bearing capacity, and the condition that the valve clack deforms to cause medium leakage is not easy to occur.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a leak-proof shut-off valve;

FIG. 2 is a schematic view of a semi-sectional structure of a leak-proof shut-off valve;

FIG. 3 is a cross-sectional view of a flap and an elastic sealing ring and a cage of a leak-proof shut-off valve;

FIG. 4 is an enlarged view of the structure of FIG. 3 at A;

in the drawings, the list of components represented by the various numbers is as follows:

1. a valve body; 2. a filler valve cover; 3. a hand wheel; 4. a valve stem; 5. a valve flap; 501. a mounting groove; 502. reinforcing ribs; 6. a valve seat; 7. an elastic sealing ring; 701. a deformation hole; 8. and (5) supporting the cover.

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.

Referring to fig. 1-4, the utility model relates to a leakage-proof stop valve, which comprises a stop valve body, wherein the stop valve body comprises a valve rod 4, a valve clack 5 and a valve seat 6, a through hole is formed in the valve seat 6, the valve rod 4 drives the valve clack 5 to do linear motion in the vertical direction, the valve clack 5 closes the through hole on the valve seat 6, the stop valve body further comprises a valve body 1, a filler valve cover 2 and a hand wheel 3, an opening is formed in the upper end of the valve body 1, the filler valve cover 2 is fixedly communicated with the upper end opening of the valve body 1 through a sealing flange, the valve rod 4 movably penetrates through the upper end of the filler valve cover 2 and forms a seal, the hand wheel 3 is rotationally connected with the upper end of the filler valve cover 2, the valve seat 6 is fixedly connected with the inner wall of the valve body 1 and separates the valve body 1 into a left cavity and a right cavity, a worker only needs to rotate the hand wheel 3 to enable the valve rod 4 to move up and down, so as to drive the valve clack 5 to do linear motion in the vertical direction, when the valve clack 5 ascends, the valve clack 5 is separated from the valve seat 6, so that substances in the valve seat 1 circulate through the through hole on the valve seat 6, when the valve clack 5 descends, the valve clack 5 is tightly, the upper end of the valve seat 1 is tightly, the valve seat 1 is tightly pressed against the valve seat 6, and the valve seat 1, and the two cavities are separated, and the valve body are not separated, and the valve body;

the valve clack 5 lower extreme is the frustum form, can dismantle fixedly on the inclined plane of valve clack 5 lower extreme and inlay and be equipped with elastic sealing ring 7, and elastic sealing ring 7 adopts elastic material to make, possesses good elasticity performance and deformability, and it is to be noted that, the elastic material that this elastic sealing ring 7 adopted does not produce the reaction with the medium that this stop valve carried, and specific material can select according to the transport medium, and elastic sealing ring 7 inside is provided with deformation hole 701, and elastic sealing ring 7 outer wall supports tightly with the through-hole inside wall on the disk seat 6.

Through the setting of elastic sealing ring 7, when the through-hole on valve seat 6 is closed to valve clack 5 lower extreme under the pressure action of valve rod 4, realize flexible seal between the inclined plane of valve clack 5 and valve seat 6, to a great extent reduces the mutual wearing and tearing between valve clack 5 and the valve seat 6, simultaneously, deformation hole 701 has increased the deformation degree of elastic sealing ring 7, make elastic sealing ring 7 more easily laminate with the through-hole inside wall of valve seat 6, when the through-hole inside wall of valve seat 6 receives the transmission medium wearing and tearing, elastic sealing ring 7 can realize good sealed effect under the effect of the pressure again, and elastic sealing ring 7 can in time change when wearing and tearing, compare in changing whole valve clack 5 maintenance cost greatly reduced, thereby reduce the maintenance cost of this stop valve when playing good leak prevention effect.

As shown in fig. 2 and fig. 4, the inclined surface at the lower end of the valve clack 5 is provided with a mounting groove 501, the elastic sealing ring 7 is detachably and fixedly embedded in the mounting groove 501, a part of space occupied by the elastic sealing ring 7 is saved, the compressed width of the elastic sealing ring 7 is larger than the distance from the inner wall of the mounting groove 501 to the inner wall of the through hole on the valve seat 6, the specific range is between 1mm and 1cm, the specific range needs to be selected according to the inner diameter of the through hole on the valve seat 6, the smaller the inner diameter of the through hole on the valve seat 6 is, the larger the inner diameter of the through hole on the valve seat 6 is, and the larger the range is, so that the elastic sealing ring 7 plays a good sealing role on the through hole on the valve seat 6 after being compressed under pressure.

As shown in fig. 2-4, the outer side wall of the elastic sealing ring 7 is parallel to the frustum side wall at the lower end of the valve clack 5 and the inner side wall of the through hole on the valve seat 6, so that the elastic sealing ring 7 is tightly attached to the inner side wall of the through hole on the valve seat 6, and the situation that most of the warping cannot play a good sealing role after the elastic sealing ring 7 is deformed is avoided.

As shown in fig. 3-4, the upper surface of the valve clack 5 is integrally formed with a reinforcing rib 502, the outer side wall of the reinforcing rib 502 is an arc surface, the reinforcing rib 502 is positioned at the edge of the upper end of the valve clack 5, the reinforcing rib 502 enhances the structural strength of the edge of the valve clack 5, and the edge of the valve clack 5 is not easy to deform under pressure, so that the valve clack 5 has stronger pressure bearing capacity, and the condition that the deformation of the valve clack 5 causes medium leakage is not easy to occur.

As shown in fig. 2-3, the upper surface of the valve clack 5 is fixed with a supporting cover 8 through a bolt, the upper end of the supporting cover 8 is abutted and sleeved at the lower end of the valve rod 4, the side wall of the lower end of the supporting cover 8 abuts against the inner side wall of the reinforcing rib 502, the supporting cover 8 further provides supporting force for the valve clack 5 so as to counteract partial pressure born by the lower end of the valve clack 5, and meanwhile, the side wall of the lower end of the supporting cover 8 abuts against the inner side wall of the reinforcing rib 502 to further avoid the deformation condition of the lower end of the supporting cover 8, so that the supporting cover 8 provides stable supporting force.

One specific application of this embodiment is: in daily use, the staff only need rotate hand wheel 3 for valve rod 4 up-and-down motion, thereby drive valve clack 5 and do vertical direction's rectilinear motion, when valve clack 5 rises, thereby make the through-hole on valve seat 6 open, make the material in the valve body 1 circulate through the through-hole on valve seat 6, when valve clack 5 descends, valve clack 5 supports tightly with valve seat 6, make the through-hole on valve seat 6 of valve clack 5 closure, thereby make two control cavity separation in the valve body 1, the material does not circulate in valve body 1, thereby realize the switching operation of stop valve, when the through-hole on valve seat 6 is closed under the pressure effect of valve rod 4 to the valve clack 5 lower extreme, realize flexible seal between the inclined plane of valve clack 5 and valve seat 6, to a great extent reduce the mutual wear between valve clack 5 and the valve seat 6, simultaneously, deformation hole 701 has increased the degree of elastic sealing ring 7, make elastic sealing ring 7 more easily laminate with the through-hole inside wall of valve seat 6, when the through-hole inside wall of valve seat 6 receives the transport medium wearing and tearing, thereby the elastic sealing ring 7 can realize under the influence again, and good sealing ring 7 can be replaced in time when the valve clack 5 is good in time replaced in the effect of the cost of the valve seat, thereby the cost is greatly reduced.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a stop valve of preventing leaking, includes the stop valve body, the stop valve body includes valve rod (4), valve clack (5) and disk seat (6), the through-hole has been seted up on disk seat (6), valve rod (4) drive valve clack (5) and do vertical direction's rectilinear motion, the through-hole on valve seat (6) is closed to valve clack (5), its characterized in that: the valve clack (5) lower extreme is the frustum form, can dismantle on the inclined plane of valve clack (5) lower extreme and fixedly inlay and be equipped with elastic sealing ring (7), elastic sealing ring (7) inside is provided with deformation hole (701), elastic sealing ring (7) outer wall supports tightly with the through-hole inside wall on disk seat (6).

2. The leakage-proof stop valve according to claim 1, wherein an installation groove (501) is formed in an inclined plane at the lower end of the valve clack (5), the elastic sealing ring (7) is detachably and fixedly embedded in the installation groove (501), and the width of the elastic sealing ring (7) after compression is larger than the distance between the inner wall of the installation groove (501) and the inner wall of the through hole on the valve seat (6).

3. The leakage-proof stop valve according to claim 2, wherein the outer side wall of the elastic sealing ring (7) is parallel to the frustum side wall of the lower end of the valve clack (5) and the inner side wall of the through hole on the valve seat (6).

4. A leak-proof shut-off valve according to claim 1, characterized in that the upper surface of the flap (5) is integrally formed with a reinforcing rib (502), the reinforcing rib (502) being located at the upper end edge of the flap (5).

5. The leakage-proof stop valve according to claim 4, wherein a supporting cover (8) is fixed on the upper surface of the valve clack (5) through bolts, the upper end of the supporting cover (8) is abutted and sleeved at the lower end of the valve rod (4), and the side wall of the lower end of the supporting cover (8) is abutted against the inner side wall of the reinforcing rib (502).

6. The anti-leakage stop valve according to claim 1, wherein the stop valve body further comprises a valve body (1), a filler valve cover (2) and a hand wheel (3), an opening is formed in the upper end of the valve body (1), the filler valve cover (2) is fixed to the upper end of the valve body (1) through a sealing flange and is communicated with the opening in the upper end of the valve body (1), the valve rod (4) movably penetrates through the upper end of the filler valve cover (2) to form a seal, the hand wheel (3) is rotatably connected with the upper end of the filler valve cover (2), and the valve seat (6) is fixed to the inner wall of the valve body (1) and separates the valve body (1) into a left chamber and a right chamber.