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Drainage backflow preventing device

A backflow prevention device and shaft installation technology are applied in water supply installations, indoor sanitary pipe installations, buildings, etc., which can solve the problems of easy damage to the device, easy water backflow in main and auxiliary water pipes, harsh conditions for backflow prevention and deodorization, etc. To achieve the effect of convenient disassembly and assembly, good drainage effect, and not easy to block

Pending Publication Date: 2020-06-19
JIANGSU MEIJIA MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The technical problem to be solved by the present invention is to provide a sewage anti-backflow device, which solves the problems of the prior art anti-backflow device and anti-odor conditions, the main and auxiliary water pipes are prone to water backflow, and the device itself is easy to be damaged. question

Method used

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  • Drainage backflow preventing device
  • Drainage backflow preventing device
  • Drainage backflow preventing device

Examples

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Embodiment Construction

[0033] The invention discloses a sewer backflow prevention device, which is installed in the sewer elbow 10, such as Figure 1-4 As shown, the elbow can include various types of interfaces, which can be connected with dishwashers, overflow outlets, and water purifiers. The anti-backflow device installed in the water can make the elbow and other pipes isolated and closed when there is no water flow , when the water flow is large, rapid drainage can be carried out. A positioning rib for positioning is provided on the inner wall of the elbow. The diameter is smaller than the diameter of the inner circle of the elbow 10, and the outer wall of the inner pipe 1 is provided with an axial groove 14 for cooperating with the reinforcing rib of the elbow for installation.

[0034] The inner pipe 1 is provided with a tubular structure 11 that allows liquid to pass through. The tubular structure 11 is placed in the inner pipe 1 and extended in the installation direction of the water elbow ...

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Abstract

The invention discloses a drainage backflow preventing device which is installed on a drainage bent pipe. The backflow preventing device comprises an inner pipe matched with the drainage bent pipe, apipe-shaped structure for flowing of liquid is arranged in the inner pipe, the pipe-shaped structure is arranged in the inner pipe and extends in the direction of the drainage bent pipe, a water inletand outlet, installed on the side of the drainage bent pipe, of the pipe-shaped structure is provided with a rocking cover, and when the backflow preventing device is in a closed state, the rocking cover completely covers the water inlet and outlet. A torsion spring is arranged between the rocking cover and the inner pipe for fixing, closing performance of the device is improved, the device can be closed without being affected by any factors, the service life of the device is prolonged by adopting the torsion spring, the strength is high, oxidation resistance and rust prevention are good, thestructure is firm and reliable, and damage is not likely to occur.

Description

technical field [0001] The invention relates to the technical field of sewer equipment, in particular to a sewer backflow prevention device. Background technique [0002] The sewer anti-backflow elbow device is a measure to prevent the main and auxiliary water pipes from reciprocating and causing reverse water. It can isolate the main and auxiliary water tanks of the sewer and perform harmless treatment, effectively avoiding the occurrence of poor drainage of the main water tank. Problem with connected plumbing overflowing into secondary sink. At present, the anti-backflow device in the water is realized by the counterweight, but at this time the elbow must be completely parallel to the ground, and no inclination is allowed. If the elbow is inclined, the counterweight will fail to prevent backflow if it is placed on an inclination and deodorant effect. Contents of the invention [0003] Purpose of the invention: The technical problem to be solved by the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03C1/22E03C1/28E03C1/298
CPCE03C1/22E03C1/28E03C1/298
Inventor 许诺吴文涛许昌友
Owner JIANGSU MEIJIA MOTOR