CN210068980U

CN210068980U - Ventilation valve

Info

Publication number: CN210068980U
Application number: CN201920603520.XU
Authority: CN
Inventors: 周文
Original assignee: Wenzhou Longdao Industrial Control Valve Co Ltd
Current assignee: Wenzhou Longdao Industrial Control Valve Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-14
Anticipated expiration: 2029-04-29

Abstract

The utility model relates to a ventilation valve, including valve body, dish board, pivot, it has the shaft hole to open on the valve body, and the pivot is passed the shaft hole and is connected fixedly with the dish board, and the both sides of dish board are equipped with the supplementary fixing device that the symmetry set up, supplementary fixing device includes card portion and sealing, and oval through-hole has been seted up to the card portion, and one side that the sealing is close to the valve body inner wall is equipped with the arc recess, is equipped with the sealing strip that the cross-section is the U-shaped in the arc recess, and the side that the sealing strip was kept away from to the arc recess is equipped with the overhead through-hole, is equipped with the spring in the overhead through-hole, and the one end that the sealing is close to card portion is equipped with the recess that slides, and the interior week of sealing is equipped. The matching position of the disc plate and the inner wall of the valve body is sealed by arranging the auxiliary fixing device.

Description

Ventilation valve

Technical Field

The utility model belongs to the technical field of ventilation equipment technique and specifically relates to a ventilation valve.

Background

The ventilation valve is a valve, is usually applied to various ventilation and dust removal pipelines for bidirectional opening and closing and gas regulation equipment, and is suitable for gas regulation, ventilation and dust removal and environmental protection systems in industries such as metallurgy, mine, cement, chemical industry, power generation, industrial furnace and the like. As a pipe control device for regulating the flow rate or shutting off the gas medium, a horizontal installation is generally adopted.

The existing ventilation valve is in the time of the closure of a disc plate and the attachment of the inner wall of a valve body, a gap exists between the two, the good blocking effect is difficult to play, the prior art generally adopts the stop blocks and the disc plate matching clamping devices which are symmetrically distributed on two sides of the disc plate, but the wear is caused by frequent opening and closing of the sticking surfaces of the stop blocks, the stop blocks can only be replaced after the stop blocks are used for a period of time, the resource waste is caused, meanwhile, the impact force on the stop blocks can be generated when the stop blocks are matched with the disc plate, and the past stop blocks are easy to deform and cause sealing failure.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a ventilation valve to overcome above defect.

The utility model provides a technical scheme that its technical problem adopted is:

a ventilation valve comprises a valve body, a disc plate and a rotating shaft, wherein the valve body is provided with a shaft hole, the rotating shaft penetrates through the shaft hole to be fixedly connected with the disc plate, and the both sides of dish board are equipped with the supplementary fixing device that the symmetry set up, supplementary fixing device includes the card portion of putting and set up in the sealing of card portion one side fixed with valve body inner wall connection, evenly distributed's oval through-hole is seted up to the card portion of putting, one side that the sealing is close to the valve body inner wall is equipped with the arc recess, be equipped with the sealing strip that the cross-section is the U-shaped in the arc recess, the side that the sealing strip was kept away from to the arc recess is equipped with the overhead through-hole, be equipped with the spring of conflict sealing strip in the overhead through-hole, the one end that the sealing is close to the card portion of putting is equipped with the recess that slides, the interior week of sealing is equipped with and slides the arc.

The periphery of pivot is equipped with the annular groove, and the annular groove intussuseption is filled with solid lubricant.

The end face of the sealing strip is arranged beyond the end face of the arc-shaped auxiliary part.

A gap is arranged between the arc-shaped auxiliary part and the oval through hole.

Owing to adopted above-mentioned technical scheme, a ventilation valve seals dish board and valve body inner wall cooperation department through setting up supplementary fixing device, and the setting up of oval through-hole makes supplementary fixing device wholly can carry out the regulation of position simultaneously, and the spring fit sealing strip plays the cushioning effect, the utility model discloses simple structure, simple to operate, the effectual sealed problem of having solved the ventilation valve.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the disc 2 and its mating components shown in fig. 1.

Fig. 3 is an exploded view of the locking portion 4, the sealing portion 5 and the sealing tape 6 in fig. 2.

Fig. 4 is an exploded view of the clamping portion 4, the sealing portion 5 and the arc auxiliary member 7 of fig. 3.

In the figure: 1. a valve body; 2. a plate; 3. a rotating shaft; 31. an annular groove; 4. a clamping part; 41. an elliptical through hole; 5. a sealing part; 51. an arc-shaped groove; 52. an overhead via; 53. a spring; 54. a sliding groove; 6. a sealing strip; 7. an arc-shaped auxiliary member; 71. and a limiting bulge.

Detailed Description

The present invention will be described in more detail with reference to the following examples, which are illustrated in the accompanying drawings. This example is merely a description of the best mode of carrying out the invention and is not intended to limit the scope of the invention in any way.

As shown in fig. 1 to 4, a ventilation valve comprises a valve body 1, a disc 2, and a rotating shaft 3, wherein the valve body 1 is provided with a shaft hole, the rotating shaft 3 passes through the shaft hole to be connected and fixed with the disc 2, and two sides of the disc 2 are provided with auxiliary fixing devices symmetrically arranged, the auxiliary fixing devices comprise a clamping portion 4 fixedly connected with the inner wall of the valve body 1 and a sealing portion 5 arranged at one side of the clamping portion 4, the clamping portion 4 is provided with evenly distributed oval through holes 41, one side of the sealing portion 5 close to the inner wall of the valve body 1 is provided with an arc groove 51, a sealing strip 6 with a U-shaped cross section is arranged in the arc groove 51, the side of the arc groove 51 far away from the sealing strip 6 is provided with an overhead through hole 52, a spring 53 abutting against the sealing strip 6 is arranged in the overhead through hole 52, one end of the sealing portion 5 close to the clamping portion 4 is provided with a sliding, the edge of one end of the arc-shaped auxiliary part 7, which is far away from the clamping part 4, is provided with a limiting bulge 71 which extends to abut against the surface of the sealing strip 6. The arc-shaped auxiliary member 7 cooperates with the sealing part 5 to play a role of limiting the motion trail of the sealing strip 6, and the arc-shaped auxiliary member 7 is placed into the sliding groove 54 through a rotating clamp.

The periphery of the rotating shaft 3 is provided with an annular groove 31, and the annular groove 31 is filled with a solid lubricant. The lubricating function is realized when the rotating shaft 3 rotates.

The end face of the sealing strip 6 is arranged beyond the end face of the arc-shaped auxiliary member 7.

A gap is arranged between the arc auxiliary member 7 and the oval through hole 41. Avoiding touching the screw for fixing the holding portion 4.

The specific working principle is as follows:

the rotation of the shaft 3 causes the disc 2 to abut against the sealing strip 6, during which the disc 2 first contacts the sealing strip 6, is slidably arranged in the arc-shaped groove 51 and buffers the impact force through the spring 53.

Owing to adopted above-mentioned technical scheme, a ventilation valve comes to seal dish board 2 and 1 inner wall cooperation department of valve body through setting up supplementary fixing device, and oval through-hole 41's setting makes supplementary fixing device wholly can carry out the regulation of position simultaneously, and spring 53 cooperates sealing strip 6 to play the cushioning effect, the utility model discloses simple structure, simple to operate has effectually solved the sealed problem of ventilation valve.

It is to be understood that the above examples are merely illustrative for clarity of description and are not limiting on the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims

1. The utility model provides a ventilation valve, includes valve body (1), dish board (2), pivot (3), its characterized in that: the valve body (1) is provided with a shaft hole, the rotating shaft (3) penetrates through the shaft hole to be fixedly connected with the disc plate (2), the two sides of the disc plate (2) are provided with auxiliary fixing devices which are symmetrically arranged, each auxiliary fixing device comprises a clamping part (4) fixedly connected with the inner wall of the valve body (1) and a sealing part (5) arranged on one side of the clamping part (4), the clamping parts (4) are provided with evenly distributed oval through holes (41), one side, close to the inner wall of the valve body (1), of each sealing part (5) is provided with an arc-shaped groove (51), a sealing strip (6) with a U-shaped cross section is arranged in each arc-shaped groove (51), the side, far away from the sealing strip (6), of each arc-shaped groove (51) is provided with an overhead through hole (52), a spring (53) for abutting against the sealing strip (6) is arranged in each overhead through hole (52, the inner periphery of the sealing part (5) is provided with an arc auxiliary part (7) matched with the sliding groove (54), and the edge of one end, far away from the clamping part (4), of the arc auxiliary part (7) is provided with a limiting bulge (71) extending to the surface of the abutting sealing strip (6).

2. A vent valve according to claim 1, wherein: the periphery of the rotating shaft (3) is provided with an annular groove (31), and the annular groove (31) is filled with solid lubricant.

3. A vent valve according to claim 1, wherein: the end face of the sealing strip (6) is arranged beyond the end face of the arc-shaped auxiliary part (7).

4. A vent valve according to claim 1, wherein: a gap is arranged between the arc-shaped auxiliary part (7) and the oval through hole (41).