CN217056355U

CN217056355U - Dust-proof and tar-proof valve for pipeline

Info

Publication number: CN217056355U
Application number: CN202123413753.XU
Authority: CN
Inventors: 董园园
Original assignee: Shanghai Yujie Machinery Co ltd
Current assignee: Shanghai Yujie Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-26
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a dust-proof and tar-proof valve for pipeline, which comprises a valve body with a step-shaped inner hole, wherein a valve clack for plugging the small hole is arranged in the large hole of the valve body, a rotating shaft runs through the top of the valve body, the rotating shaft is installed on the valve body through a bearing, the rotating shaft is positioned above the small hole, the valve clack is fixedly connected with the rotating shaft through a shaft sleeve part, the shaft sleeve part comprises a shaft sleeve sleeved outside the rotating shaft and a connecting plate for connecting the shaft sleeve and the valve clack, and a gap is arranged between the shaft sleeve and the valve body; the rotating shaft is connected with the driving device, and a rubber layer is arranged on the surface of the valve clack. The utility model discloses simple structure, when the medium flows from the macropore end to the aperture end, closes the valve, and the medium plays the effect of self sealss to the valve clack, under long-time service conditions, the scale deposit in the pivot because preset between axle sleeve and the valve body gappedly, the scale deposit can not influence the rotation of pivot in the pivot yet.

Description

Dust-proof and tar-proof valve for pipeline

Technical Field

The utility model relates to a valve relates to a dust prevention tar prevention valve for pipeline particularly.

Background

In a pipeline of fan equipment, the existing pipeline valve adopts a rotating shaft to penetrate through the center of a valve body, and a valve clack rotates around the central rotating shaft to realize opening and closing, so that the pipeline valve with the structure has poor sealing performance; when the gas medium contains substances such as dust, tar and the like, scaling in the pipeline is easily caused, and the rotating shaft is inconvenient to rotate; in addition, the valve clack of the existing pipeline valve is inconvenient to maintain and replace.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a pipeline is with preventing dust tar valve door to solve the problem among the prior art.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

the dust-proof and tar-proof valve for the pipeline is characterized by comprising a valve body with a step-shaped inner hole, wherein a valve clack used for plugging the small hole is arranged in a large hole of the valve body, a rotating shaft penetrates through the top of the valve body, the rotating shaft is installed on the valve body through a bearing, the rotating shaft is positioned above the small hole, the valve clack is fixedly connected with the rotating shaft through a shaft sleeve part, the shaft sleeve part comprises a shaft sleeve sleeved outside the rotating shaft and a connecting plate for connecting the shaft sleeve and the valve clack, and a gap is formed between the shaft sleeve and the valve body; the rotating shaft is connected with the driving device, and a rubber layer is arranged on the surface of the valve clack.

In the preferred embodiment of the present invention, the shaft sleeve is fixedly connected to the rotating shaft through a bolt.

In the preferred embodiment of the present invention, the valve flap is connected to the connecting plate by welding.

In a preferred embodiment of the present invention, the contact surface of the valve flap and the orifice is an arc-shaped sealing surface.

In the preferred embodiment of the present invention, the bearing inner side of the rotating shaft is provided with a sealing ring to prevent dust from entering.

In a preferred embodiment of the present invention, the driving device is a hand wheel.

The driving device drives the rotating shaft to rotate, so that the valve clack is driven to turn over, and the valve is opened or closed.

The utility model discloses simple structure, loss of pressure is little, and when the medium flows from the macropore end to the micropore end, closes the valve, the medium plays the effect of self sealss to the valve clack, when opening the valve, the utility model discloses a mode at valve clack upsets to the valve body top does not influence medium pressure, and under long-time service conditions, the scale deposit in the pivot owing to preset the clearance between axle sleeve and the valve body, the scale deposit can not influence the rotation of pivot yet in the pivot. When the valve clack is maintained and replaced, only the valve clack and the shaft sleeve part are required to be replaced together, the operation is simple, and the maintenance cost is reduced.

The features of the present invention will be apparent from the drawings and from the detailed description of the preferred embodiments which follows.

Drawings

Fig. 1 is a schematic perspective view of a dust and tar preventing valve for a pipeline.

Fig. 2 is a schematic sectional view of a dust and tar preventing valve for a pipeline.

Fig. 3 is another schematic sectional view of the dust and tar preventing valve for pipeline.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments and not all embodiments of the present application; and the structures shown in the drawings are merely schematic and do not represent objects. It should be noted that all other embodiments obtained by a person skilled in the art based on these embodiments of the present invention belong to the protection scope of the present application.

It is to be noted that the term "comprises," "comprising," or any other variation thereof in this document is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical or equivalent elements in a process, method, article, or apparatus that comprises the element.

The terms "upper", "lower", "inner", "outer", and the like do not constitute absolute spatial relationship limitations, but are merely a concept of relative position. As will be appreciated by those skilled in the art.

Referring to fig. 1 to 3, the dust and tar preventing valve for a pipeline includes a valve body 100 having a stepped inner hole 110, and flanges 120 are provided at both ends of the valve body 100 to facilitate connection with the pipeline.

A valve clack 130 for plugging the small hole is arranged in the large hole of the valve body, and the contact surface of the valve clack and the small hole is an arc-shaped sealing surface. A rotating shaft 140 penetrates through the top of the valve body 110, the rotating shaft 140 is mounted on the valve body 110 through a bearing, the rotating shaft 140 is located above the small hole 111, and a sealing ring is arranged on the inner side of the bearing of the rotating shaft to prevent dust from entering.

The valve flap 130 is fixedly connected to the rotating shaft 140 through a shaft sleeve member, in this embodiment, the shaft sleeve member includes a shaft sleeve 151 sleeved outside the rotating shaft 140, and a connecting plate 152 connecting the shaft sleeve 151 and the valve flap 130, and the shaft sleeve 151 is fixedly connected to the rotating shaft 140 through a bolt. The valve flap 130 is connected to the connection plate 152 by welding. When the valve clack 130 is maintained and replaced, only the valve clack 130 and the shaft sleeve part need to be replaced together, the operation is simple, and the maintenance cost is reduced.

A gap 160 is arranged between the shaft sleeve 151 and the valve body 100; under the condition of long-time use, the rotating shaft is scaled, and the rotating shaft 140 cannot be influenced by the scaling on the rotating shaft due to the preset gap 160 between the shaft sleeve and the valve body.

The rotating shaft is connected with a driving device, and the rotating shaft is driven to rotate by the driving device, in this embodiment, the driving device is a hand wheel.

When the valve is used, the driving device drives the rotating shaft to rotate, so that the valve clack is driven to turn over, and the valve is opened or closed.

When the medium flows from the macropore end to the micropore end, closes the valve, the medium plays the effect of self sealss to the valve clack, when opening the valve, the utility model discloses a mode at valve clack upwards upset to valve body top does not influence medium pressure.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that all the embodiments and descriptions are provided in the present invention, and that various changes and modifications can be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The dust-proof and tar-proof valve for the pipeline is characterized by comprising a valve body with a step-shaped inner hole, wherein a valve clack used for plugging the small hole is arranged in a large hole of the valve body, a rotating shaft penetrates through the top of the valve body, the rotating shaft is installed on the valve body through a bearing, the rotating shaft is positioned above the small hole, the valve clack is fixedly connected with the rotating shaft through a shaft sleeve part, the shaft sleeve part comprises a shaft sleeve sleeved outside the rotating shaft and a connecting plate for connecting the shaft sleeve and the valve clack, and a gap is formed between the shaft sleeve and the valve body; the rotating shaft is connected with the driving device, and a rubber layer is arranged on the surface of the valve clack.

2. The dust and tar preventing valve for the pipeline as recited in claim 1, wherein the shaft sleeve is fixedly connected with the rotating shaft through a bolt.

3. The dust and tar preventing valve for pipeline of claim 1, wherein the valve flap is connected to the connection plate by welding.

4. The dust and tar resistant pipeline valve as claimed in claim 1, wherein the contact surface between the valve flap and the orifice is an arc-shaped sealing surface.

5. The valve of claim 1, wherein a seal ring is disposed inside the bearing of the shaft.

6. The valve of claim 1, wherein the driving device is a handwheel.