CN218480242U

CN218480242U - Sealing structure for valve body

Info

Publication number: CN218480242U
Application number: CN202222625371.1U
Authority: CN
Inventors: 吉远宏; 李平泉; 吉远东; 吉辉; 吉勇
Original assignee: Jiangsu Fenghe Machinery Manufacturing Co ltd
Current assignee: Jiangsu Fenghe Machinery Manufacturing Co ltd
Priority date: 2022-10-06
Filing date: 2022-10-06
Publication date: 2023-02-14
Anticipated expiration: 2032-10-06

Abstract

The utility model relates to a valve body seal structure technical field specifically is a seal structure that valve body was used, include: the pneumatic actuator comprises a pneumatic actuator main body, a valve rod penetrates out of the bottom end of the pneumatic actuator main body, a sealing shell is arranged outside the valve rod, and a valve body is connected below the sealing shell. The utility model discloses a pneumatic actuator main part drives the valve rod and rotates, thereby it is closed to the valve body switch to make the valve rod drive the valve plate, the valve rod bottom end cover is established the bearing and is convenient for the valve rod and is rotated, simultaneously the bearing outside is equipped with on protective housing and the welding valve body, avoid the medium to reveal, the sealed shell of welding between pneumatic actuator main part and the valve body, avoid the medium to follow the hole that the valve rod was worn out the valve body and reveal, when the valve rod rotates simultaneously, drive linking piece downstream through the flank of thread, make linking piece promote the rubber piece, penetrate through the through hole and accept the board, and compress tightly on the valve rod wears the hole, avoid the medium to take place to permeate and reveal, accept the fixed stay of being convenient for of board welding sealed shell inner wall side.

Description

Sealing structure for valve body

Technical Field

The utility model relates to a valve body seal structure technical field specifically is a seal structure that valve body was used.

Background

The valve is a control device for medium delivery, like different types such as common electromagnetic valves, ball valves and butterfly valves, the valve has different functions such as cutoff, drainage, backflow prevention and pressure relief, and the like, and the types from simple to complex are numerous and numerous, so that the valve can deliver and control gas, liquid and the like, but the valve has certain sealing property due to the permeability of the gas and the liquid.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure that valve body was used to it receives the impact of extrusion or medium to appear deformation to propose the sealing washer in solving above-mentioned background art, leads to appearing certain gap and leads to the medium infiltration, is simultaneously in sealed the valve body, also can have the infiltration of medium and the problem of revealing in the junction of valve rod and valve body.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing structure for a valve body, comprising: the pneumatic actuator main part, the valve rod has been worn out to the bottom of pneumatic actuator main part, and the outside of valve rod is provided with sealed shell, the below of sealed shell is connected with the valve body, and the inside of valve body is provided with the valve plate, the bottom cover of valve rod is equipped with the bearing, and the outer wall of valve rod is fixed with the screw thread face, the external connection of screw thread face links up the piece, and links up the bottom of piece and be provided with the block rubber, the below of block rubber is provided with accepts the board, and accepts the inner wall of board and seted up the through hole, the inside top of sealed shell is provided with the packing layer, and the inside below of sealed shell is connected with first sealed pad, the spout has been seted up to the inner wall of sealed shell, and the inside arrangement of spout has the slider.

Preferably, the valve rod penetrates into the interior of the joint block, and the valve rod is in threaded connection with the joint block through a threaded surface.

Preferably, the rubber block and the valve rod form a sliding structure through the connection block, and the rubber block is connected with the connection block in an adhesive mode.

Preferably, the sealing shell is connected with the first sealing gasket in an adhesion mode, and the first sealing gasket is tightly attached to the valve rod.

Preferably, the sliding block is connected with the connecting block in a welding mode, and the sliding block forms a sliding structure with the sliding groove through the connecting block.

Preferably, the inner wall of the valve body is connected with a sealing ring, one side of the valve plate is provided with a blocking block, and the outer wall of the blocking block is connected with a second sealing gasket.

Preferably, the valve plate is tightly attached to the second sealing gasket, and the second sealing gasket is connected with the blocking block in an adhesive mode.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a pneumatic actuator main part drives the valve rod and rotates, thereby it is closed to the valve body switch to make the valve rod drive the valve plate, the valve rod bottom end cover is established the bearing and is convenient for the valve rod and is rotated, simultaneously the bearing outside is equipped with on protective housing and the welding valve body, avoid the medium to reveal, the sealed shell of welding between pneumatic actuator main part and the valve body, avoid the medium to follow the hole that the valve rod was worn out the valve body and reveal, when the valve rod rotates simultaneously, drive linking piece downstream through the flank of thread, make linking piece promote the rubber piece, penetrate through the through hole and accept the board, and compress tightly on the valve rod wears the hole, avoid the medium to take place to permeate and reveal, accept the fixed stay of being convenient for of board welding sealed shell inner wall side.

The utility model discloses a be equipped with the packing layer in the sealed shell that sets up and further improve the leakproofness, the contact surface of valve rod and valve body is equipped with first sealed pad simultaneously, avoids the medium to wear out the hole through the valve rod and reveals, links up a welded slider, slides at sealed shell through the spout, is convenient for when linking up a direction, keeps linking up a stable slip.

The utility model discloses valve body inner wall welding blocks the piece, and the shape that blocks the piece is identical with the valve plate, and when the valve plate was closed, closely the laminating avoided the medium to reveal with blocking the piece, blocks that the piece is equipped with two turns and improves the seal, blocks simultaneously that the piece is sealed with the contact surface bonding second of valve plate and fills up, further improves the seal, when the built-in sealing washer of valve body is convenient for with connections such as pipeline, plays the seal.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic view of the rubber block structure of the present invention;

fig. 4 is a schematic view of the top view structure of the present invention.

In the figure: 1. a pneumatic actuator body; 2. a valve stem; 3. a valve body; 4. a valve plate; 5. a bearing; 6. sealing the shell; 7. a joining block; 8. a threaded surface; 9. a rubber block; 10. a bearing plate; 11. a through hole; 12. a filler layer; 13. a chute; 14. a slider; 15. a first gasket; 16. a seal ring; 17. a blocking block; 18. a second gasket.

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.

Referring to fig. 1 to 3, a sealing structure for a valve body includes: the pneumatic actuator comprises a pneumatic actuator body 1, a valve rod 2 penetrates through the bottom end of the pneumatic actuator body 1, a sealing shell 6 is arranged outside the valve rod 2, a valve body 3 is connected below the sealing shell 6, a valve plate 4 is arranged inside the valve body 3, a bearing 5 is sleeved at the bottom end of the valve rod 2, a threaded surface 8 is fixed on the outer wall of the valve rod 2, an engagement block 7 is connected outside the threaded surface 8, a rubber block 9 is arranged at the bottom of the engagement block 7, a receiving plate 10 is arranged below the rubber block 9, a through hole 11 is formed in the inner wall of the receiving plate 10, the valve rod 2 penetrates into the engagement block 7, the valve rod 2 is in threaded connection with the engagement block 7 through the threaded surface 8, a sliding structure is formed between the rubber block 9 and the valve rod 2 through the engagement block 7, the rubber block 9 is in adhesive connection with the engagement block 7, the valve rod 2 is driven to rotate through the pneumatic actuator body 1, and therefore the valve rod 2 drives the valve plate 4 to close the valve body 3, the bottom end of the valve rod 2 is sleeved with a bearing 5 to facilitate the rotation of the valve rod 2, meanwhile, the bearing 5 is externally provided with a protective shell and welded on the valve body 3 to avoid medium leakage, a sealing shell 6 is welded between the pneumatic actuator main body 1 and the valve body 3 to avoid the leakage of the medium along with the penetration of the valve rod 2 out of the hole of the valve body 3, simultaneously, the valve rod 2 drives the connecting block 7 to move downwards through the thread surface 8 when rotating, so that the connecting block 7 pushes the rubber block 9, the connecting plate 10 penetrates through the through hole 11 and is tightly pressed on the penetration hole of the valve rod 2 to avoid the penetration and leakage of the medium, the connecting plate 10 is welded on the inner wall side of the sealing shell 6 to facilitate the fixed support, a packing layer 12 is arranged above the inside of the sealing shell 6, a first sealing gasket 15 is connected below the inside of the sealing shell 6, a chute 13 is arranged on the inner wall of the sealing shell 6, a sliding block 14 is arranged inside the chute 13, and the sealing shell 6 is bonded with the first sealing gasket 15, first sealed 15 and the valve rod 2 of filling up closely laminates, slider 14 and linking piece 7 welded connection, slider 14 constitutes sliding construction through linking up between piece 7 and the spout 13, be equipped with packing layer 12 in the sealed shell 6 and further improve the leakproofness, valve rod 2 is equipped with first sealed 15 with the contact surface of valve body 3 simultaneously, avoid the medium to wear to go out the hole and reveal through valve rod 2, link up 7 welded slider 14 of piece, slide at sealed shell 6 through spout 13, be convenient for when linking up 7 guides of piece, keep linking up 7 steady slip of piece.

As shown in fig. 1, 2 and 4, a sealing structure for a valve body includes: the inner wall of the valve body 3 is connected with a sealing ring 16, one side of the valve plate 4 is provided with a blocking block 17, the outer wall of the blocking block 17 is connected with a second sealing gasket 18, the valve plate 4 is tightly attached to the second sealing gasket 18, the second sealing gasket 18 is in adhesive connection with the blocking block 17, the blocking block 17 is welded on the inner wall of the valve body 3, the shape of the blocking block 17 is matched with that of the valve plate 4, when the valve plate 4 is closed, the blocking block 17 is tightly attached to the blocking block 17 to avoid medium leakage, the blocking block 17 is provided with two turning parts to improve the tightness, meanwhile, the second sealing gasket 18 is bonded on the contact surface of the blocking block 17 and the valve plate 4, the tightness is further improved, and when the sealing ring 16 is embedded in the valve body 3 and is convenient to be connected with a pipeline and the like, and the tightness is achieved.

The working principle is as follows: when the sealing structure is used, firstly, the valve rod 2 is controlled to rotate by the pneumatic actuator main body 1, the valve rod 2 penetrates into the valve body 3 and penetrates through the valve plate 4 and is connected with the valve body 4 in a welding mode, the valve plate 4 is driven by the valve rod 2 to close and open the valve body 3, the bearing 5 is sleeved at the bottom end of the valve rod 2 to keep the valve rod 2 to rotate stably, the outer portion of the bearing 5 is provided with a protective shell to avoid medium leakage, meanwhile, the sealing shell 6 is welded between the pneumatic actuator main body 1 and the valve body 3 to protect the valve rod 2 and avoid medium leakage, the valve rod 2 penetrates through the connecting block 7, the contact surface of the connecting block 7 is provided with a threaded surface 8 and is connected with threads, the connecting block 7 is convenient to push to slide downwards when the valve rod 2 rotates, the rubber block 9 is driven to seal the connecting plate 10 through the through hole 11, the valve rod 2 penetrates through the valve body 3, and the leakage condition is avoided when the medium circulates, meanwhile, the valve rod 2 penetrates through the contact surface of the valve body 3 to adhere to the first sealing gasket 15, the sealing performance is further improved, the sliding block 14 welded on the outer wall of the connecting block 7 is clamped in the sliding groove 13 formed in the sealing shell 6, the connecting block 7 is kept stable when sliding, meanwhile, the packing layer 12 is arranged inside the sealing shell 6, sealing materials are conveniently led in to play a role in sealing performance, when a valve needs to be closed, the valve body 3 can be opened through reverse rotation of the valve rod 2, the rubber block 9 returns to the original position under the driving of the connecting block 7, the inner wall of the valve body 3 is provided with the sealing ring 16 when being connected with a pipeline, certain sealing performance is achieved, meanwhile, the blocking block 17 is welded on the inner wall of the valve body 3, the edge gap of the blocking 17 is matched with the valve plate 4, tight adhesion is facilitated, the permeation of media is reduced, two turning positions are arranged, the sealing performance is convenient to improve, and meanwhile, the sealing performance is improved by adhering the second sealing gasket 18 on the contact surface of the blocking 17 and the valve plate 4.

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

Claims

1. A sealing structure for a valve body, comprising: the pneumatic actuator main body (1) is characterized in that a valve rod (2) penetrates out of the bottom end of the pneumatic actuator main body (1), a sealing shell (6) is arranged outside the valve rod (2), a valve body (3) is connected to the lower portion of the sealing shell (6), a valve plate (4) is arranged inside the valve body (3), a bearing (5) is sleeved at the bottom end of the valve rod (2), a threaded surface (8) is fixed to the outer wall of the valve rod (2), the outer portion of the threaded surface (8) is connected with a connecting block (7), a rubber block (9) is arranged at the bottom of the connecting block (7), a connecting plate (10) is arranged below the rubber block (9), a through hole (11) is formed in the inner wall of the connecting plate (10), a packing layer (12) is arranged above the inner portion of the sealing shell (6), a first sealing gasket (15) is connected to the lower portion of the inner portion of the sealing shell (6), a sliding groove (13) is formed in the inner wall of the sealing shell (6), and a sliding block (14) is arranged inside the sliding groove (13).

2. A sealing structure for a valve body according to claim 1, wherein the valve rod (2) penetrates into the inside of the engagement block (7), and the valve rod (2) is screwed with the engagement block (7) through the screw surface (8).

3. A sealing arrangement for a valve body according to claim 1, characterized in that the rubber block (9) forms a sliding arrangement with the valve stem (2) via the adapter block (7), and that the rubber block (9) is adhesively connected to the adapter block (7).

4. A sealing structure for a valve body according to claim 1, wherein the sealing housing (6) is adhesively bonded to the first packing (15), and the first packing (15) is closely fitted to the valve stem (2).

5. A sealing structure for a valve body according to claim 1, wherein the slider (14) is welded to the engagement block (7), and the slider (14) forms a sliding structure with the sliding groove (13) through the engagement block (7).

6. A sealing structure for a valve body according to claim 1, characterized in that the inner wall of the valve body (3) is connected with a sealing ring (16), one side of the valve plate (4) is provided with a blocking block (17), and the outer wall of the blocking block (17) is connected with a second sealing gasket (18).

7. A sealing structure for a valve body according to claim 1 or 6, characterized in that the valve plate (4) is tightly attached to the second gasket (18), and the second gasket (18) is adhesively connected to the stopper (17).