CN220268463U

CN220268463U - Rubber lining soft sealing structure of butterfly valve

Info

Publication number: CN220268463U
Application number: CN202320915642.9U
Authority: CN
Inventors: 闫荣健
Original assignee: Tianjin Jinkaiyuan Valve Manufacturing Co ltd
Current assignee: Tianjin Jinkaiyuan Valve Manufacturing Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-12-29
Anticipated expiration: 2033-04-21

Abstract

The utility model provides a rubber lining soft sealing structure of a butterfly valve, which comprises the following components: the sealing assembly consists of a compensation part, a sealing part and a jogged part, the outer side surface of the sealing part is provided with a first groove, the compensation part is fixedly connected in the first groove, the jogged part is fixedly connected with the inner side of the sealing part, meanwhile, the jogged part is fixedly connected in the jogged groove through a limiting part, the jogged groove is provided with the side surface of the valve plate, the sealing assembly is correspondingly provided with a sealing hole relative to the position of the valve rod, the valve rod is movably connected in the sealing hole, the valve seat is symmetrically connected with two sides of the inner cavity of the valve body, one side, close to the valve plate, of the valve seat is fixedly connected with a first sealing ring, the first sealing ring is movably connected in the first sealing groove, and meanwhile, the position, relative to the first sealing ring, of the valve plate is correspondingly provided with the first sealing groove. According to the utility model, the sealing property between the valve plate and the valve body can be effectively enhanced through the matching of the sealing component and the valve seat.

Description

Rubber lining soft sealing structure of butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a rubber lining soft sealing structure of a butterfly valve.

Background

The butterfly valve is also called as a flap valve, is a regulating valve with a simple structure, can be used for controlling the opening and closing of low-pressure pipeline media, and is a valve which is characterized in that a closing member is a disc and rotates around a valve shaft to be opened and closed, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like; the butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve body in the valve body, so that the purpose of opening and closing or adjusting is achieved; but current butterfly valve is sealed mainly relies on the rubber circle cladding in the valve plate circumference outside to realize, and this rubber circle is simple structure's annular generally, and long-time use can make rubber frequent compression and ageing to corresponding wearing and tearing also can appear in its edge, contains impurity such as sand grain, iron fillings again like medium in the pipeline simultaneously, and this structure can lose sealed effect, influences life.

Disclosure of Invention

In order to overcome the defects in the prior art, a rubber lining soft sealing structure of a butterfly valve is provided so as to solve the problems in the background art.

In order to achieve the above object, a rubber lining soft sealing structure of a butterfly valve is provided, comprising: the valve comprises a sealing assembly and a valve seat, wherein the valve body is movably connected with a valve rod through a sealing bearing, the valve rod is movably connected with a valve plate, the valve plate is movably connected with the valve body through the valve rod, meanwhile, the side face of the valve body is fixedly connected with the sealing assembly, the sealing assembly consists of a compensation part, a sealing part and a jogging part, the outer side face of the sealing part is provided with a groove I, the compensation part is fixedly connected with the inner side of the sealing part, the jogging part is fixedly connected with the jogging part through a limiting part, the jogging groove is provided with the side face of the valve plate, the position of the sealing assembly relative to the valve rod is correspondingly provided with a sealing hole, the valve rod is movably connected with the sealing hole, the valve seat is symmetrically connected with two sides of an inner cavity of the valve body, one side, close to the valve plate, of the valve seat is fixedly connected with a sealing ring I, the sealing ring I is movably connected with the sealing groove I, and meanwhile the position of the valve plate relative to the sealing ring I is correspondingly provided with the sealing groove I.

Preferably, the valve seats are two groups, the two groups of valve seats are of semicircular structures, the two groups of valve seats are distributed in a central symmetry mode relative to the valve rod, and meanwhile the distance between the two groups of valve seats is matched with the thickness of the valve body.

Preferably, the outer arc surface of the valve body is provided with a jogged groove, the jogged groove is of a circular ring structure, the shaft section of the jogged groove is of a square structure, two groups of limit grooves are symmetrically arranged at one ends, far away from the opening, of the two sides of the jogged groove, and the sections of the two groups of limit grooves are of arc structures.

Preferably, the embedded part is of a circular ring structure, the sizes of the embedded part and the embedded groove are matched, the embedded part is correspondingly connected with the limiting part relative to the position of the limiting groove, the two groups of limiting parts are of a circular ring structure, and meanwhile, the shaft section of the limiting plate is of an arc structure.

Preferably, the sealing part is of a circular ring structure, the inner diameter of the sealing part is matched with the diameter of the valve plate, the outer diameter of the sealing part is matched with the size of the inner cavity of the valve body, the position of the inner arc surface of the sealing part, which is opposite to the embedded groove, is correspondingly connected with the embedded part, and the shaft section formed by combining the sealing part and the embedded part is of a convex structure.

Preferably, the middle part of the outer arc surface of the sealing part is provided with a first groove, the first groove is of a circular ring structure, the axial section of the first groove is of an isosceles trapezoid structure, the whole compensating part fixedly connected in the first groove is of a circular ring structure, and the axial section of the compensating part is of a sector ring structure.

Preferably, the compensating groove is correspondingly formed in the position of the inner cavity surface of the valve body relative to the compensating part, the axial section of the compensating groove is of an arc-shaped structure, two groups of sealing grooves I symmetrically formed in the surface of the valve plate are of circular ring structures, and meanwhile, the sections of the sealing ring I and the sealing groove I are of isosceles trapezoid structures.

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of disk seat and sealing ring one for the sealing component that the valve plate side was connected can obtain effectual support, thereby when reducing the pressure that liquid impacted sealing component was too big, make sealing component edge appear the probability of warping, and then reduce sealing component and appear revealing the probability, simultaneously, through the cooperation of sealing part, gomphosis portion and spacing portion, can effectively strengthen the steadiness that valve plate and sealing component connect, the setting of compensation portion simultaneously, can strengthen the sealed effect of junction between sealing part and the valve body, when ageing or wearing and tearing appear in sealing part edge, the effect of secondary seal can be realized to the compensation portion, avoid the liquid infiltration that sealing part revealed to the other end of valve plate, strengthen sealed effect, sealing component passes through the dual seal structure that sealing part and compensation portion constitute moreover, can effectively reduce impurity to sealing component's influence.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present utility model.

Fig. 2 is a schematic side view of an embodiment of the present utility model.

Fig. 3 is a schematic top view of an embodiment of the present utility model.

Fig. 4 is an enlarged schematic view at a of fig. 3 according to an embodiment of the present utility model.

Fig. 5 is an enlarged schematic view at B of fig. 2 according to an embodiment of the present utility model.

In the figure: 1. a valve body; 2. a valve plate; 3. a seal assembly; 4. a valve seat; 5. a valve stem; 6. a compensation unit; 7. a sealing part; 8. a fitting portion; 9. a limit part; 10. a first seal groove; 11. and a first sealing ring.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

Referring to fig. 1 to 5, the present utility model provides a rubber lining soft sealing structure of a butterfly valve, comprising: the valve comprises a sealing assembly 3 and a valve seat 4, wherein the valve body 1 is movably connected with a valve rod 5 through a sealing bearing, the surface of the valve rod 5 is fixedly connected with a valve plate 2, the valve plate 2 is movably connected in the valve body 1 through the valve rod 5, meanwhile, the side surface of the valve body 1 is fixedly connected with the sealing assembly 3, the sealing assembly 3 consists of a compensating part 6, a sealing part 7 and a jogged part 8, the outer side surface of the sealing part 7 is provided with a groove I, the compensating part 6 is fixedly connected in the groove I, the inner side of the sealing part 7 is fixedly connected with the jogged part 8, meanwhile, the jogged part 8 is fixedly connected in a jogged groove through a limiting part 9, the jogged groove is provided with a side surface of the valve plate 2, the sealing assembly 3 is correspondingly provided with a sealing hole, the valve rod 5 is movably connected in the sealing hole, the valve seat 4 is symmetrically connected with two sides of an inner cavity of the valve body 1, the valve seat 4 is close to one side of the valve plate 2 and is fixedly connected with a sealing ring I11, the sealing ring I10 is movably connected in a sealing groove I10, and meanwhile, the position of the valve plate 2 relative to the sealing ring I11 is correspondingly provided with a sealing ring.

In this embodiment, the sealing component 3 is fixedly connected with the outer arc surface of the valve plate 2 through the adhesive, thereby the connection stability between the sealing component 3 and the valve plate 2 can be further enhanced, when two ends of the valve body 1 are required to be communicated, the valve plate 2 is fixedly connected with the valve plate 2 through the rotation of the valve rod 5, the valve plate 2 drives the sealing component 3 to synchronously rotate, the butterfly valve can be opened, wherein the sealing layer in the sealing component 3 is extruded and deformed by the inner wall of the valve body 1, then the normal rotation of the valve plate 2 is ensured, the compensating part 6 in the sealing component 3 is extruded and deformed by the side edge of the compensating groove, the elasticity of the compensating part 6 can be enhanced, the loss generated by the deformation of the compensating part 6 is less than the loss generated by the deformation of the sealing part 7, so when the edge of the sealing part 7 is aged or worn due to long-term use, the compensating part 6 still has a good sealing effect, so part of liquid leaked at the edge of the sealing part 7 can be intercepted by the compensating part 6 when flowing into the groove one, and then the liquid can be prevented from penetrating to the other end of the valve body 1, thereby the sealing effect and the service life of the butterfly valve are enhanced.

As a preferred embodiment, the valve seats 4 are two groups, the two groups of valve seats 4 are all in a semicircular structure, the two groups of valve seats 4 are distributed in a central symmetry manner relative to the valve rod 5, and meanwhile, the distance between the two groups of valve seats 4 is matched with the thickness of the valve body 1.

In this embodiment, as shown in fig. 1 and 3, the valve seat 4 is provided, so that the sealing component 3 at the edge of the valve plate 2 can be supported by a corresponding structure, and then the problem that the liquid breaks the sealing at the edge of the sealing component 3 when the water pressure in the valve body 1 is too large can be effectively avoided, thereby enhancing the sealing stability of the butterfly valve.

As a preferred implementation mode, the outer arc surface of the valve body 1 is provided with an embedded groove, the embedded groove is of a circular ring structure, the shaft section of the embedded groove is of a square structure, two groups of limit grooves are symmetrically arranged at one ends, far away from the opening, of the two sides of the embedded groove, and the sections of the two groups of limit grooves are of arc structures.

In the present embodiment, as shown in fig. 2 and 4, the setting of the limit groove enables the fitting portion 8 to be fixedly connected in the fitting groove through the limit portion 9, so that the connection stability between the seal assembly 3 and the valve plate 2 can be enhanced.

As a preferred embodiment, the embedded part 8 is in a circular ring structure, the sizes of the embedded part 8 and the embedded groove are matched, the position of the embedded part 8 relative to the limit groove is correspondingly connected with the limit part 9, the two groups of limit parts 9 are all in a circular ring structure, and the axial section of the limit plate is in an arc structure.

In this embodiment, as shown in fig. 2 and 4, the sizes of the fitting portion 8 and the fitting groove are adapted, so that the stability of the fitting portion 8 during connection can be enhanced, the tightness of the connection between the sealing assembly 3 and the valve plate 2 can also be enhanced, and meanwhile, the arc-shaped structure of the limiting portion 9 can reduce the loading and unloading difficulty of the fitting portion 8.

As a preferred embodiment, the sealing part 7 is in a circular ring structure, the inner diameter of the sealing part 7 is matched with the diameter of the valve plate 2, the outer diameter of the sealing part 7 is matched with the size of the inner cavity of the valve body 1, the position of the inner arc surface of the sealing part 7 corresponding to the embedded groove is correspondingly connected with the embedded part 8, and the shaft section formed by combining the sealing part 7 and the embedded part 8 is in a convex structure.

In this embodiment, as shown in fig. 2 and 4, the sealing portion 7 is provided, so that a good tightness is provided between the valve plate 2 and the valve body 1, and the cooperation of the sealing portion 7 and the embedded portion 8 can effectively increase the actual contact area between the sealing assembly 3 and the valve plate 2, so that the connection stability between the sealing assembly 3 and the valve plate 2 can be enhanced, and the tightness of two groups of connection positions can be enhanced.

As a preferred embodiment, a groove one is formed in the middle of the outer arc surface of the sealing part 7, the groove one is in a circular ring structure, the axial section of the groove one is in an isosceles trapezoid structure, the whole compensating part 6 fixedly connected in the groove one is in a circular ring structure, and the axial section of the compensating part 6 is in a fan ring structure.

In this embodiment, like fig. 2 and fig. 4, the compensating part 6 can effectively strengthen self elasticity through the cavity of inside, then can reduce the loss that self deformation brought, make compensating part 6's life be greater than sealing part 7 then, can carry out corresponding interception to the liquid that sealing part 7 edge was revealed, thereby ensure that sealing component 3 is whole still possesses better sealed effect, also can avoid sealing part 7 a certain place to appear revealing, just need change the problem of whole sealing member, reduce the maintenance cost.

As a preferred implementation manner, the position of the inner cavity surface of the valve body 1 relative to the compensating part 6 is correspondingly provided with a compensating groove, the axial section of the compensating groove is of an arc-shaped structure, two groups of sealing grooves I10 symmetrically arranged on the surface of the valve plate 2 are of circular ring structures, and meanwhile, the sections of the sealing ring I11 and the sealing groove I10 are of isosceles trapezoid structures.

In this embodiment, as shown in fig. 3 and 4, the first sealing ring 11 and the first sealing groove 10 are provided, so that a corresponding sealing effect can be provided between the valve seat 4 and the valve plate 2, and then the sealing assembly 3 can be assisted to perform a corresponding sealing.

According to the rubber lining soft sealing structure of the butterfly valve, the sealing assembly 3 is matched with the valve seat 4, so that the sealing performance between the valve plate 2 and the valve body 1 can be effectively enhanced, and when leakage occurs at the edge of the sealing part 7 due to aging or abrasion, the whole sealing assembly 3 can still have good sealing performance.

Claims

1. A rubber-lined soft sealing structure of a butterfly valve, comprising: sealing component (3) and disk seat (4), through sealing bearing swing joint valve rod (5) in valve body (1), fixed surface of valve rod (5) connects valve plate (2), and valve plate (2) pass through valve rod (5) swing joint in valve body (1), side fixed connection sealing component (3) of valve body (1), its characterized in that simultaneously: the sealing assembly (3) consists of a compensation part (6), a sealing part (7) and an embedding part (8), the outer side surface of the sealing part (7) is provided with a first groove, the compensation part (6) is fixedly connected in the first groove, the inner side of the sealing part (7) is fixedly connected with the embedding part (8), meanwhile, the embedding part (8) is fixedly connected in the embedding groove through a limiting part (9), the embedding groove is formed in the side surface of the valve plate (2), the sealing assembly (3) is correspondingly provided with a sealing hole at the position corresponding to the valve rod (5), the valve rod (5) is movably connected in the sealing hole, the valve seat (4) is symmetrically connected to the two sides of the inner cavity of the valve body (1), one side, close to the valve plate (2), of the valve seat (4) is fixedly connected with a first sealing ring (11), the first sealing ring (11) is movably connected in the first sealing groove (10), and meanwhile, the valve plate (2) is correspondingly provided with the first sealing groove (10) at the position corresponding to the first sealing ring (11).

2. The rubber lining soft sealing structure of the butterfly valve according to claim 1, wherein the valve seats (4) are two groups, the two groups of valve seats (4) are of semicircular structures, the two groups of valve seats (4) are distributed in a central symmetry mode relative to the valve rod (5), and meanwhile the distance between the two groups of valve seats (4) is matched with the thickness of the valve body (1).

3. The rubber lining soft sealing structure of a butterfly valve according to claim 1, wherein the outer arc surface of the valve body (1) is provided with a jogged groove, the jogged groove is in a circular ring structure, the shaft section of the jogged groove is in a square structure, meanwhile, two groups of limit grooves are symmetrically arranged at one ends of two sides of the jogged groove far away from the opening, and the sections of the two groups of limit grooves are in arc structures.

4. The rubber lining soft sealing structure of the butterfly valve according to claim 1, wherein the embedded part (8) is of a circular ring structure, the embedded part (8) is matched with the embedded groove in size, the embedded part (8) is correspondingly connected with the limiting part (9) relative to the limiting groove, the two groups of limiting parts (9) are of circular ring structures, and meanwhile, the shaft section of the limiting plate is of an arc structure.

5. The rubber lining soft sealing structure of the butterfly valve according to claim 1, wherein the sealing part (7) is of a circular ring structure, the inner diameter of the sealing part (7) is matched with the diameter of the valve plate (2), the outer diameter of the sealing part (7) is matched with the size of the inner cavity of the valve body (1), the position of the inner arc surface of the sealing part (7) opposite to the embedded groove is correspondingly connected with the embedded part (8), and the shaft section formed by combining the sealing part (7) and the embedded part (8) is of a convex structure.

6. The rubber lining soft sealing structure of the butterfly valve according to claim 1, wherein a groove I is formed in the middle of an outer arc surface of the sealing part (7), the groove I is of a circular ring structure, the shaft section of the groove I is of an isosceles trapezoid structure, the whole of a compensation part (6) fixedly connected in the groove I is of a circular ring structure, and the shaft section of the compensation part (6) is of a fan ring structure.

7. The rubber lining soft sealing structure of the butterfly valve according to claim 1, wherein the compensating groove is correspondingly formed on the surface of the inner cavity of the valve body (1) relative to the compensating part (6), the axial section of the compensating groove is of an arc-shaped structure, two groups of sealing grooves I (10) symmetrically formed on the surface of the valve plate (2) are of circular ring structures, and meanwhile, the sections of the sealing ring I (11) and the sealing groove I (10) are of isosceles trapezoid structures.