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An Effective Loss Reduction Type Closed Fan

A technology for closing fans and reducing losses, applied in conveyors, conveying bulk materials, transportation and packaging, etc., can solve the problems of reducing the practicability of closing fans, leakage of air at the connection, poor sealing effect, etc. Guaranteed air-tight performance and sealing effect

Active Publication Date: 2021-01-22
安徽省碧绿春生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing shut-off fan has poor sealing effect. When the shut-off fan is in use, due to the poor seal, air leakage and material leakage are prone to occur at the joints at both ends, which reduces the practicability of the shut-off fan; Excessive friction, easy to damage

Method used

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  • An Effective Loss Reduction Type Closed Fan
  • An Effective Loss Reduction Type Closed Fan

Examples

Experimental program
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Effect test

Embodiment 1

[0022] In this embodiment, the fan blade 3 includes a first splint 3-1, a second splint 3-2, a scraper 3-3 and an elastic sealing strip 3-4, and the first splint 3-1 and the second splint 3-2 are connected to each other. Installed parallel to the shaft 2, the width of the gap between the first splint 3-1 and the second splint 3-2 is equal to the thickness of the scraper 3-3, and the elastic sealing strip 3-4 is bonded to the shaft 2 and is located on the second splint. Between the first splint 3-1 and the second splint 3-2, the scraper 3-3 is inserted into the gap between the first splint 3-1 and the second splint 3-2 and bonded to the elastic sealing strip 3-4. The scraper 3-3 extends along the radial direction of the rotating shaft 2 in the width direction. In this way, during the rotation of the rotating shaft 2, the scraper 3-3 expands and contracts with the change of the inner diameter of the side of the housing 1, ensuring that the fan blade 3 divides the space inside th...

Embodiment 2

[0025] In the embodiment, the fan blade 3 is composed of a blade and a film, the blade is installed on the rotating shaft 2 , and the film is installed on the side of the blade away from the rotating shaft 2 . The soft sheet has a rubber construction. In this way, the gap between the blade and the housing 1 can be sealed by the film, ensuring the air-closing performance, avoiding the blade from scratching the inner wall of the housing, and reducing wear and tear.

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Abstract

The invention discloses a loss effectively reducing type rotary valve. The loss effectively reducing type rotary valve comprises a housing, a rotating shaft and an even number of blades, wherein the housing is composed of a first end surface and a second end surface which are parallel to each other, and a side surface enclosing the first end surface and the second end surface; the projection of the side surface onto the plane perpendicular to the rotating shaft is an elliptical surface cut by a first plane and a second plane which are parallel to each other and both perpendicular to the majoraxis of the elliptical surface; the housing is provided with a feeding port and a discharging port on the first plane and the second plane respectively; the rotating shaft is mounted inside the housing and coincides with the central axis of the elliptical surface. According to the loss effectively reducing type rotary valve, the housing is in an elliptical structure, and when rotating from the minor axis direction to the major axis direction of the elliptical surface, the blades can be expanded gradually to ensure tightness isolated by the blades between the feeding port and the discharging port and meanwhile to avoid excessive wearing between the blades and the inner wall of the housing, thereby prolonging the service life of the blades.

Description

technical field [0001] The invention relates to the technical field of closed fans, in particular to an effective loss reduction type closed fan. Background technique [0002] Shut-off fans are also called unloaders, air lock valves, and rotary valves. Shut-off fans are divided into three categories: ordinary type, pressure-resistant type, and high-temperature-resistant type. Shut-off fans are used to install the discharge port of the unloader that works under negative pressure. The upper part accepts the material discharged from the unloader, relies on the rotating impeller to transport the material, and also plays the role of sealing to prevent the air from being sucked in from the discharge port during the pneumatic conveying process, so as to ensure the normal discharge of the unloader. [0003] At present, the existing shut-off fan has poor sealing effect. When the shut-off fan is in use, due to the poor seal, air leakage and material leakage are prone to occur at the j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G53/46B65G53/34
CPCB65G53/34B65G53/4616
Inventor 董传宁杨银
Owner 安徽省碧绿春生物科技有限公司
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