Rotary valve

A technology for shutting down and switching fans, which is applied in the field of shutting down fans, and can solve the problems of poor sealing of the main body of the switch impeller, increased wear of the impeller blades, and easy leakage of materials, etc.

Inactive Publication Date: 2018-10-09
RUSHAN HANWEI BIO TECHN & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the fact that when the fan is closed and unloaded, the main body of the switch impeller is not tightly sealed, and the material is easy to leak, and when the unloading is opened, the wear of the impeller blades is likely to be aggravated, and the service life of the impeller blades is shortened, which is not conducive to the large workload of the fan shutdown, For the techn...

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the examples.

[0015] Such as figure 1 , figure 2 , image 3 Shown, be a kind of embodiment of the present invention, be provided with shut-off fan seat body 2, shut-off fan seat body 2 is provided with circular inner cavity body 15, and circular inner cavity body 15 upper end is provided with feed inlet 4, and circular inner cavity body The lower end of the cavity 15 is provided with a discharge port 5, the circular inner cavity 15 is provided with a switch impeller main body 6, the switch impeller main body 6 is provided with a power spindle 3, and the switch impeller main body 6 is provided with an impeller bushing 14 and an impeller blade 13 The outer side of the impeller blade 13 away from the impeller shaft sleeve 14 is provided with a sealing scraper 11 . The power spindle 3 is connected to the blower base body 2 through the left bearing seat 1 of the power spindle and the right bearin...

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Abstract

The invention provides a rotary valve. The rotary valve solves the technical problems that an existing rotary valve is provided with a sealing scraping plate, a switch impeller body is not completelysealed and materials easily leak during stopping discharging, and impeller blades are easily highly abraded during starting discharging, and thus the service lives of the impeller blades are decreased, and the rotary valve cannot work for a long time and under high workload. The rotary valve is provided with a rotary valve seat body which is provided with a circular inner chamber, wherein a feeding port is formed in the upper end of the circular inner chamber, and a discharging port is formed in the lower end of the circular inner chamber; a switch impeller main body consisting of an impellershaft sleeve and impeller blades is arranged in the circular inner chamber; the impeller shaft sleeve is connected to a power main shaft; the impeller blades are arranged on the outer circumference ofthe impeller shaft sleeve; and a sealing scraping plate is arranged at the outside of each impeller blade. The rotary valve is widely applicable to discharging starting and stopping of a spray dryer.

Description

technical field [0001] The invention relates to a shut-off fan, in particular to a shut-off fan for a spray dryer. Background technique [0002] We know that the main body of the switch impeller of the existing fan is mainly made of steel plate or plastic, and there is no sealing scraper. When the discharge is closed, the main body of the switch impeller is not tightly sealed, and the material is easy to leak. When the discharge is opened, it is easy to cause impeller blades Aggravated wear will shorten the service life of the impeller blades, which is not conducive to the large workload and long-term work of the fan. Contents of the invention [0003] The present invention aims at the fact that when the fan is closed and unloaded, the main body of the switch impeller is not tightly sealed, and the material is easy to leak, and when the unloading is opened, the wear of the impeller blades is likely to be aggravated, and the service life of the impeller blades is shortened,...

Claims

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Application Information

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IPC IPC(8): B65G29/00
CPCB65G29/00
Inventor 孙春燕宫本强徐晓庆
Owner RUSHAN HANWEI BIO TECHN & SCI
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