Anti-backflow axial flow pump
By setting up a reverse flow preventing assembly in front of the water outlet of the axial flow pump, the problem of water reflux during shutdown is solved, and the effect of preventing water reflux is achieved, and the pump body is kept dry.
Patent Information
- Application Number
- CN202420464988.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-03-11
AI Technical Summary
When the axial flow pump is shut down, the water in the conveying pipeline will flow back into the inside of the pump body, causing water accumulation in the pump body and affecting subsequent work.
A reverse flow anti-absorbent axial flow pump is designed, and anti-reflow components are provided in front of the water outlet, including a base cylinder, a partition plate, a through hole, a barrier door, a rotary sleeve, a shaft, a limiting plate and a torsion spring. These components work together to enable the barrier door to close and block through holes when the water flows down, preventing backflow.
It effectively prevents the backflow of water, keeps the pump body dry, and ensures the normal operation of the axial flow pump.
Smart Images
Figure CN222478975U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of axial flow pumps, in particular to an anti-backflow axial flow pump. Background Art
[0002] An axial flow pump is a pump that transports the liquid along the axial direction by the force exerted by the blades of the rotating impeller on the liquid. Current axial flow pumps still expose some problems during use. When the axial flow pump is shut down, the water in the delivery pipe will flow back into the pump body, causing water accumulation in the pump body, affecting subsequent work.
[0003] Therefore, an anti-backflow axial flow pump is needed to improve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-backflow axial flow pump to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An anti-backflow axial flow pump comprises an axial flow pump body, a water outlet is provided on the upper side of the front of the axial flow pump body, and an anti-backflow component is installed on the front of the water outlet;
[0007] The backflow prevention component includes a base cylinder arranged at the front side of the water outlet, a partition plate is installed in the middle of the interior of the base cylinder, a through hole is opened in the middle of the partition plate, a blocking door is symmetrically arranged on the front side of the partition plate and in front of the through hole, a rotating sleeve is arranged on the outside of the blocking door, a rotating shaft is sleeved inside the rotating sleeve, limit plates are arranged at the upper and lower ends of the rotating shaft, and a torsion spring is sleeved on the outer wall of the rotating shaft and on the upper and lower sides of the rotating sleeve.
[0008] As a preferred solution of the present invention, the partition plate and the inner wall of the base tube are designed as an integrally formed structure.
[0009] As a preferred solution of the present utility model, the connection structure between the limit plate and the partition plate is a fixed connection.
[0010] As a preferred solution of the present utility model, the connection between the rotating shaft and the limiting plate is a fixed connection.
[0011] As a preferred solution of the utility model, the rotating shaft passes through the rotating sleeve, and the rotating sleeve and the rotating shaft are connected in a rotational manner.
[0012] As a preferred solution of the utility model, the two ends of the torsion spring are fixedly connected to the partition plate and the barrier door respectively.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. In the utility model, the rotating sleeve, rotating shaft, limiting plate and torsion spring are arranged to drive the barrier door to do hinge movement, so that when the water is flowing forward, the barrier door can be opened from the rear by the impact force of the water. When the water flows backward, the impact force is lost at the rear, and the torsion spring will close the barrier door and block the through hole. In summary, the above design can make the axial flow pump body have the function of preventing backflow. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;
[0016] Figure 2 This is a partial structural diagram of the backflow prevention component of the utility model;
[0017] Figure 3 This is an enlarged schematic diagram of structure A of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the partition plate of the utility model.
[0019] In the figure: 1, axial flow pump body; 2, water outlet; 3, backflow prevention assembly; 301, base cylinder; 302, partition plate; 303, through hole; 304, blocking door; 305, rotating sleeve; 306, rotating shaft; 307, limit plate; 308, torsion spring. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0021] For examples, see Figure 1-4 , the utility model provides a technical solution:
[0022] An anti-backflow axial flow pump comprises an axial flow pump body 1, a water outlet 2 is provided on the upper side of the front of the axial flow pump body 1, and an anti-backflow component 3 is installed on the front of the water outlet 2;
[0023] The backflow prevention component 3 includes a base tube 301 arranged on the front side of the water outlet 2, a partition plate 302 is installed in the middle of the base tube 301, a through hole 303 is opened in the middle of the partition plate 302, a blocking door 304 is symmetrically arranged on the front side of the partition plate 302 and in front of the through hole 303, a rotating sleeve 305 is arranged on the outside of the blocking door 304, a rotating shaft 306 is sleeved inside the rotating sleeve 305, and limit plates 307 are arranged at the upper and lower ends of the rotating shaft 306, and a torsion spring 308 is sleeved on the outer wall of the rotating shaft 306 and on the upper and lower sides of the rotating sleeve 305.
[0024] The locking cam 306 is connected to the locking cam 307 by the spring 308, and the locking cam 308 is connected to the locking cam 309 by the spring 310.
[0025] The working process of the utility model is as follows: when the axial flow pump body 1 is started, water will enter the base cylinder 301 from the water outlet 2, and then the water will pass through the through hole 303 to impact the blocking door 304. At this time, the blocking door 304 will be opened by the impact force of the water, and then the water will flow normally. When the water flows back, the back of the blocking door 304 loses the impact force. At this time, the torsion spring 308 will rebound and turn the blocking door 304 to be close to the front of the partition plate 302, thereby blocking the through hole 303. At this time, the backflow of water is prevented. The rotating sleeve 305, the rotating shaft 306, the limiting plate 307 and the torsion spring 308 can drive the blocking door 304 to do hinge movement, so that when the water is flowing forward, the blocking door 304 can be opened from the rear by the impact force of the water. When the water flows back, the torsion spring 308 will close the blocking door 304 and block the through hole 303 due to the loss of impact force at the rear. In summary, the design can enable the axial flow pump body 1 to have the function of preventing backflow.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-backflow axial flow pump, comprising an axial flow pump body (1), characterized in that: A water outlet (2) is provided on the upper side of the front face of the axial flow pump body (1), and a backflow prevention component (3) is installed on the front face of the water outlet (2); The backflow prevention component (3) comprises a base tube (301) arranged at the front side of the water outlet (2), a partition plate (302) is installed in the middle of the base tube (301), a through hole (303) is opened in the middle of the partition plate (302), a blocking door (304) is symmetrically arranged on the front side of the partition plate (302) and in front of the through hole (303), a rotating sleeve (305) is arranged on the outside of the blocking door (304), a rotating shaft (306) is sleeved inside the rotating sleeve (305), limit plates (307) are arranged at the upper and lower ends of the rotating shaft (306), and a torsion spring (308) is sleeved on the outer wall of the rotating shaft (306) and on the upper and lower sides of the rotating sleeve (305).
2. The anti-backflow axial flow pump according to claim 1, characterized in that: The partition plate (302) and the inner wall of the base tube (301) are designed as an integrally formed structure.
3. The anti-backflow axial flow pump according to claim 1, characterized in that: The connection structure between the limiting plate (307) and the partition plate (302) is a fixed connection.
4. The anti-backflow axial flow pump according to claim 1, characterized in that: The connection between the rotating shaft (306) and the limiting plate (307) is a fixed connection.
5. The anti-backflow axial flow pump according to claim 1, characterized in that: The rotating shaft (306) passes through the rotating sleeve (305), and the rotating sleeve (305) and the rotating shaft (306) are connected in a rotational manner.
6. The anti-backflow axial flow pump according to claim 1, characterized in that: The two ends of the torsion spring (308) are fixedly connected to the partition plate (302) and the barrier door (304) respectively.