CN113928864A

CN113928864A - Air closing valve capable of adjusting air closing quantity

Info

Publication number: CN113928864A
Application number: CN202111173824.5A
Authority: CN
Inventors: 黄肇雄; 姚江韬; 张媛媛; 刘莉莉; 李强
Original assignee: Gaomi Yinying New Material Co ltd
Current assignee: Gaomi Yinying New Material Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-01-14
Anticipated expiration: 2041-10-09
Also published as: CN113928864B

Abstract

The invention discloses an air seal valve capable of adjusting air seal volume, which belongs to the field of air seal valves and comprises a machine shell and a rotating shaft, wherein a plurality of blades are uniformly distributed on the circumference of the rotating shaft, and the end parts of the blades are provided with wear-resistant materials and are contacted with the machine shell. In order to solve the problems, the same position of the circumference of each blade is provided with a channel, a circumferential pipeline penetrates through the channel, the circumferential pipeline between every two adjacent blades is provided with an external pipeline, the external pipeline faces the direction away from the rotating shaft, the external pipeline is provided with ball valves, the two ends of the ball valves can be communicated by opening the quantity of the ball valves with opposite circumferences, and the vibrating screen obtains normal negative pressure so as to regulate and control the leakage amount.

Description

Air closing valve capable of adjusting air closing quantity

Technical Field

The invention relates to the field of air seal valves, in particular to an air seal valve capable of adjusting air seal volume.

Background

The rotor of the traditional airlock is formed by welding six to eight blades on a main shaft, is often arranged at the discharge outlet of a discharger which works under negative pressure, plays a role in quantitative conveying by the rotation of an impeller in a shell, and plays a role in sealing, so that air is prevented from being sucked from the discharge outlet in the pneumatic conveying process, and the normal discharge of the discharger is ensured.

However, for different working condition requirements, especially when different materials are discharged, certain requirements may be imposed on the leakage amount of the air lock valve, and some air lock valves generally available in the market have small leakage amount and large leakage amount of some products, but the leakage amount of none of the air lock valves can be adjusted.

For example, when the air seal valve faces a negative pressure conveying system and is arranged between the vibrating screen and the discharger, the vibrating screen has almost no negative pressure due to low leakage amount and more dust leakage because the sealing performance of most air seal valves is better. Therefore, the air-lock valve is required to meet the requirement of arbitrarily adjusting the leakage amount.

In view of the problems in the prior art, the invention designs and manufactures the air seal valve capable of adjusting the air seal volume by combining years of design and use experience of related fields and assisting with over-strong professional knowledge, so as to overcome the defects.

Disclosure of Invention

For the problems in the prior art, the air-seal valve capable of adjusting the air-seal volume can realize the random adjustment of the leakage volume.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an air closing valve capable of adjusting air closing quantity comprises a shell and a rotating shaft, wherein a plurality of blades are uniformly distributed on the circumference of the rotating shaft, and the end parts of the blades are provided with wear-resistant materials and are in contact with the shell;

every blade circumference same position all is equipped with a passageway, run through a circumference pipeline in the passageway, all be equipped with external pipeline on the circumference pipeline between every adjacent blade, the pivot direction is kept away from to external pipeline orientation, be equipped with the ball valve on the external pipeline.

Preferably, the length of the end part of the circumscribed pipeline from the rotating shaft is 7/10-8/10 of the length of the vane.

Preferably, there is no gap between the circumferential duct and the channel.

Preferably, the circumferential duct has an overall diameter greater than the vane length.

The invention has the advantages that:

1. according to the invention, through opening the number of the ball valves with opposite circumferences or opening all the ball valves at different opening degrees, the intercommunication of the two ends of the ball valves can be realized, the vibrating screen obtains certain negative pressure, the purpose of regulating and controlling the leakage amount is realized, the whole structure is simple, and the normal conveying is not influenced.

2. When the air seal valve is used for conveying without leakage amount, normal conveying requirements of the air seal valve can be met only by turning off all the ball valves, and when the air seal valve is used for conveying with different leakage amounts, the application range of the whole air seal valve is wider although the ball valves need to be manually adjusted.

Drawings

Fig. 1 is a schematic view of an airlock valve inorganic casing capable of adjusting the amount of air to be shut.

In the figure: 1-rotating shaft, 2-blade, 3-circumferential pipeline, 4-external pipeline and 5-ball valve.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the air seal valve capable of adjusting air seal volume comprises a machine shell and a rotating shaft 1, wherein a plurality of blades 2 are uniformly distributed on the circumference of the rotating shaft 1, and the end parts of the blades 2 are provided with wear-resistant materials and almost contact with the machine shell.

Because the air seal valve is arranged between the vibrating screen and the discharger with negative pressure, the sealing performance of the air seal valve is good, the leakage rate is low, the vibrating screen almost has no negative pressure, and the dust leakage of the vibrating screen is more. In order to solve the problems, a channel is arranged at the same position of the circumference of each blade 2, a circumferential pipeline 3 penetrates through the channel, the overall diameter of the circumferential pipeline 3 is preferably larger than the length of each blade 2, no gap exists between the circumferential pipeline 3 and the channel, an external pipeline 4 is arranged on the circumferential pipeline 3 between every two adjacent blades 2, the external pipeline 4 faces the direction away from the rotating shaft 1, ball valves 5 are arranged on the external pipeline 4, and the quantity of the ball valves 5 which are opposite in circumference is opened, so that the two ends of each ball valve 5 can be communicated, the vibrating screen obtains normal negative pressure, and the leakage amount is further regulated and controlled; or the leakage amount can be regulated and controlled by opening all the ball valves 5 at different opening degrees, the whole structure is simple, and normal conveying is not influenced.

In order to prevent the material to be conveyed from entering the circumferential pipe 3 through the outer pipe 4, the length of the end of the outer pipe 4 from the rotating shaft 1 is preferably set to 7/10-8/10 of the length of the blade 2, even if the end of the outer pipe 4 is as close as possible to the inner wall of the casing.

When the air seal valve is used for conveying without leakage amount, the normal conveying requirement of the air seal valve can be met only by turning off all the ball valves 5, and when the air seal valve is used for conveying with different leakage amounts, although the ball valves 5 need to be manually adjusted, the application range of the whole air seal valve is wider.

It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should also be understood that various alterations, modifications and/or variations can be made to the present invention by those skilled in the art after reading the technical content of the present invention, and all such equivalents fall within the protective scope defined by the claims of the present application.

Claims

1. The air seal valve capable of adjusting the air seal volume is characterized by comprising a shell and a rotating shaft, wherein a plurality of blades are uniformly distributed on the circumference of the rotating shaft, and the end parts of the blades are provided with wear-resistant materials and are in contact with the shell;

2. The airlock of claim 1 wherein the distance from the end of said circumscribing pipe to the axis of rotation is 7/10-8/10 of the length of the vanes.

3. An adjustable air-closing rate valve according to claim 1 wherein there is no gap between said circumferential duct and said passageway.

4. An adjustable air-closing rate air-closing valve according to claim 1 wherein the overall diameter of said circumferential duct is greater than the length of said vanes.