CN220060611U

CN220060611U - Valve seat with double sealing structure

Info

Publication number: CN220060611U
Application number: CN202320654418.9U
Authority: CN
Inventors: 宋庆昌
Original assignee: Tianjin Pengjia Valve Fittings Co ltd
Current assignee: Tianjin Pengjia Valve Fittings Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-11-21
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a valve seat with a double sealing structure, which comprises a sphere, wherein soft sealing elements are arranged on the left side and the right side of the sphere, hard sealing elements are arranged on the opposite sides of the soft sealing elements in a penetrating way, sealing installation seats are arranged on the opposite sides of the soft sealing elements in a penetrating way in a sliding way, the soft sealing elements are arranged on the opposite sides of the soft sealing elements in a penetrating way in a sliding way, jacking columns which are uniformly distributed at equal angles are arranged on the opposite sides of the sealing installation seats in a penetrating way in a sliding way, the jacking columns are contacted with the hard sealing elements, and installation seat cover plates are arranged on the opposite sides of the sealing installation seats. According to the utility model, the hard sealing element and the sealing mounting seat are connected in a sliding way, so that a movable range is provided for the soft sealing element and the hard sealing element, when the ball body is rotated, the injection of hydraulic oil into the communicating pipe can be stopped, the extrusion force between the soft sealing element and the ball body is reduced to be very low, and the friction force born by the soft sealing element can be reduced.

Description

Valve seat with double sealing structure

Technical Field

The utility model relates to the technical field of valve seats, in particular to a valve seat with a double sealing structure.

Background

The disk seat is the interior face part that can dismantle of valve for support case closes the position entirely, and constitute sealed pair, general disk seat diameter is the maximum circulation diameter of valve, and the disk seat material of say ball valve, butterfly valve is very extensive, all kinds of rubber, plastics, metal material all can regard as the disk seat material, for example: EPDM, NBR, NR, PTFE, PEEK, PFA, SS315, STELLITE, etc.

At present, a valve seat generally adopts a sealing structure, and generally adopts one of soft sealing and hard sealing, the tightness of the hard sealing is not very good but wear-resistant, and the tightness of the soft sealing is relatively good but is easy to wear, so that the technical problem existing in the prior art is solved by introducing the valve seat with the double sealing structure.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a valve seat with a double sealing structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a disk seat with dual seal structure, includes the spheroid, the spheroid left and right sides all is provided with soft sealing member, two soft sealing member is all run through and is provided with hard sealing member in opposite directions one side, two hard sealing member is all run through and sliding connection has sealed mount pad and soft sealing member to run through and with sealed mount pad sliding connection, two sealed mount pad is all run through and sliding connection has equiangular evenly distributed's jack-prop and hard sealing member contact in opposite directions one side opposite directions, two sealed mount pad is all provided with the mount pad apron in opposite directions one side, two adjacent one side of mount pad apron all is provided with second annular fluting and jack-prop right-hand member and second annular fluting is corresponding, all run through and fixedly connected with communicating pipe before the middle part of mount pad apron top is partial, the spheroid front side middle part is run through and is provided with first through-hole.

For further description of the above technical solution:

and one side of the soft sealing piece, which is close to the sphere, is provided with an arc surface which is matched with the outer wall of the sphere.

For further description of the above technical solution:

and a limiting ring is arranged in the middle of the matched position of the soft sealing element and the hard sealing element and fixedly connected with the hard sealing element.

For further description of the above technical solution:

two seal mount pad opposite sides all run through and sliding connection have equiangular evenly distributed's sealing washer and jack-prop run through respectively and with sealing washer fixed connection.

For further description of the above technical solution:

the two opposite sides of the sealing installation seat are respectively provided with a first annular slot, and the two first annular slots correspond to the two second annular slots respectively.

For further description of the above technical solution:

the arc lateral wall that the jack-prop was kept away from hard sealing member one side all runs through and is provided with evenly distributed's second through-hole.

For further description of the above technical solution:

one side of the top column far away from the hard sealing piece penetrates through and is provided with a cavity, and the cavity, the second through hole and the communicating pipe are communicated.

For further description of the above technical solution:

two the mount pad apron is all run through and are provided with equiangular evenly distributed's fixing bolt and fixing bolt runs through and with seal mount pad threaded connection in one side that is on the back mutually.

The utility model has the following beneficial effects:

1. according to the utility model, the hard sealing element and the sealing mounting seat are connected in a sliding way, so that a movable range is provided for the soft sealing element and the hard sealing element, when the ball body is rotated, the injection of hydraulic oil into the communicating pipe can be stopped (pressure relief) firstly, and then the hydraulic pressure born by the jacking column can disappear, so that the extrusion force between the soft sealing element and the ball body is reduced to be very low when the ball body is rotated, the friction force born by the soft sealing element can be reduced, the abrasion is reduced, and the service life of the soft sealing element is prolonged.

2. According to the utility model, the hydraulic oil with the specified pressure is injected into the communicating pipe, so that the hydraulic oil enters the cavity and extrudes the jacking column, then the jacking column extrudes the hard sealing element, the hard sealing element drives the soft sealing element to extrude the ball body, and good sealing performance can be ensured even the soft sealing element is worn by compensating the wearing part of the soft sealing element.

Drawings

FIG. 1 is a schematic illustration of a valve seat with dual seal structure according to the present utility model;

FIG. 2 is an exploded right side view of a valve seat with dual seal construction in accordance with the present utility model;

FIG. 3 is an exploded left side view of a valve seat with dual seal construction in accordance with the present utility model;

fig. 4 is a partial cross-sectional view of a valve seat with a dual seal structure in accordance with the present utility model.

Legend description:

1. a first through hole; 2. a sphere; 3. a soft seal; 4. sealing the mounting seat; 5. a communicating pipe; 6. a fixing bolt; 7. a mounting seat cover plate; 8. a hard seal; 9. a top column; 10. a first annular slot; 11. a second annular slot; 12. an arc surface; 13. a seal ring; 14. a second through hole; 15. a confinement ring; 16. a cavity.

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.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, one embodiment provided by the present utility model is: the utility model provides a disk seat with dual seal structure, including spheroid 2, spheroid 2 left and right sides all is provided with soft sealing member 3, two soft sealing member 3 are all run through and are provided with hard sealing member 8 on one side of being opposite to each other, when the function of switching is realized to the spheroid 2 needs to select, at first through setting up into sliding connection between hard sealing member 8 and the seal mount pad 4, make soft sealing member 3 and hard sealing member 8 can be in the cavity of seal mount pad 4 can left or right movable space, two soft sealing member 8 are all run through and sliding connection have seal mount pad 4 and soft sealing member 3 run through and with seal mount pad 4 sliding connection on opposite sides, two seal mount pad 4 are all run through and sliding connection has equiangular evenly distributed's spliced pole 9 and hard sealing member 8 contact on opposite sides, when rotatory spheroid 2, can stop earlier to the hydraulic oil of appointed pressure of communicating pipe 5 injection, then hydraulic pressure that spliced pole 9 received can make at spheroid 2 rotatory extrusion force, thereby very low to the space that can reduce between soft sealing member 3 and the spheroid 2, thereby two seal member 8 run through and soft sealing member 3 run through and seal mount pad 4 are provided with two and two side of being opposite to each other, annular seal mount pad 7 is provided with two and two side of face-to be connected with annular seal mount pad 7, annular front side 11 is set up with two and is corresponding top 7, two side of face seal mount pad 11 is set up with annular front side 7, two side is opposite to seal mount pad 11 and is connected with annular front end 11, and is provided with annular front end 11.

The side that soft sealing member 3 is close to spheroid 2 all is provided with arcwall face 12 and arcwall face 12 cooperatees with the outer wall of spheroid 2, after the rotatory appointed state of spheroid 2, through the hydraulic oil that pours into appointed pressure into communicating pipe 5, make first annular fluting 10 and the inside hydraulic oil that fills of second annular fluting 11, the middle part of soft sealing member 3 and hard sealing member 8 cooperation department is provided with restriction ring 15 and hard sealing member 8 fixed connection, two seal mount pad 4 are all run through and sliding connection have equiangular evenly distributed's sealing washer 13 and jack post 9 run through respectively and with sealing washer 13 fixed connection, hydraulic oil enters into cavity 16 and extrudes jack post 9, make jack post 9 slide along seal mount pad 4 and extrude hard sealing member 8, two seal mount pad 4 are all provided with first annular fluting 10 and two first annular fluting 10 respectively corresponding with two second annular fluting 11, the arc lateral wall that hard sealing member 8 one side was kept away from to jack post 9 all runs through and is provided with evenly distributed's second through hole 14, hard sealing member 8 can drive soft sealing member 3, thereby seal member 3 is formed with equiangular evenly distributed's sealing washer 13 and jack post 9 and runs through and with sealing washer 13 fixed connection, hydraulic oil enters into cavity 16 and extrudes jack post 9, make jack post 9 slide along seal mount pad 4 and extrude hard sealing member 8, two seal mount pad 4 are provided with equal angular distribution 6, and is located between the equal angular seal mount pad 6 and the equal angle is located with cavity 6.

Working principle: when the ball 2 needs to be selected to realize the opening and closing functions, firstly, the hard sealing element 8 and the sealing installation seat 4 are connected in a sliding mode, so that the soft sealing element 3 and the hard sealing element 8 can move leftwards or rightwards in the cavity of the sealing installation seat 4, when the ball 2 is rotated, the injection of hydraulic oil with specified pressure into the communicating pipe 5 can be stopped, then the hydraulic pressure born by the jacking column 9 can disappear, when the ball 2 is rotated, the extrusion force between the soft sealing element 3 and the ball 2 is reduced to be very low, the abrasion of the soft sealing element 3 can be reduced, when the ball 2 is rotated to a specified state, the hydraulic oil with specified pressure is injected into the communicating pipe 5, so that the first annular groove 10 and the second annular groove 11 are filled with the hydraulic oil, then the hydraulic oil enters into the cavity 16 and extrudes the jacking column 9, so that the jacking column 9 slides along the sealing installation seat 4 and extrudes the hard sealing element 8, and then the hard sealing element 8 can drive the soft sealing element 3 to extrude the ball 2, and good sealing performance is formed.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. Valve seat with double seal structure, including spheroid (2), its characterized in that: the ball body (2) is provided with soft sealing elements (3) on the left and right sides, two soft sealing elements (3) are penetrated and provided with hard sealing elements (8) on one side opposite to each other, one end of each hard sealing element (8) opposite to each other is penetrated and connected with a sealing installation seat (4) in a sliding manner, the soft sealing elements (3) are penetrated and connected with the sealing installation seat (4) in a sliding manner, two sealing installation seats (4) are penetrated and connected with jacking columns (9) which are uniformly distributed at equal angles on one side opposite to each other in a sliding manner, the jacking columns (9) are contacted with the hard sealing elements (8), two seal mount pad (4) all are provided with mount pad apron (7) on one side that is opposite to each other, two mount pad apron (7) adjacent one side all is provided with second annular fluting (11) and jack-prop (9) right-hand member and second annular fluting (11) are corresponding, mount pad apron (7) top middle part is all run through before leaning on and fixedly connected with communicating pipe (5), spheroid (2) front side middle part runs through and is provided with first through-hole (1).

2. A valve seat with double seal structure according to claim 1, wherein: the side of the soft sealing piece (3) close to the sphere (2) is provided with an arc-shaped surface (12), and the arc-shaped surface (12) is matched with the outer wall of the sphere (2).

3. A valve seat with double seal structure according to claim 1, wherein: the middle part of the matching position of the soft sealing element (3) and the hard sealing element (8) is provided with a limiting ring (15), and the limiting ring (15) is fixedly connected with the hard sealing element (8).

4. A valve seat with double seal structure according to claim 1, wherein: two sealing installation seats (4) are penetrated through on one side opposite to each other and are connected with sealing rings (13) which are uniformly distributed at equal angles in a sliding manner, and jacking columns (9) are respectively penetrated through and fixedly connected with the sealing rings (13).

5. A valve seat with double seal structure according to claim 1, wherein: the two opposite sides of the sealing installation seat (4) are respectively provided with a first annular slot (10), and the two first annular slots (10) respectively correspond to the two second annular slots (11).

6. A valve seat with double seal structure according to claim 1, wherein: the arc-shaped side walls of the side, far away from the hard sealing piece (8), of the top column (9) are penetrated and provided with second through holes (14) which are uniformly distributed.

7. A valve seat with double seal structure according to claim 1, wherein: one side of the top column (9) far away from the hard sealing piece (8) penetrates through and is provided with a cavity (16), and the cavity (16), the second through hole (14) and the communicating pipe (5) are communicated.

8. A valve seat with double seal structure according to claim 1, wherein: two the opposite sides of the mounting seat cover plate (7) are penetrated and provided with fixing bolts (6) which are uniformly distributed at equal angles, and the fixing bolts (6) penetrate and are in threaded connection with the sealing mounting seat (4).