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Anti-siphon backflow flushing valve

A flush valve, anti-siphon technology, applied in flush toilets, water supply devices, flushing equipment with water tanks, etc. The effect of siphoning backflow, reducing step cost, enhancing structural strength

Pending Publication Date: 2022-02-01
乐清市兴丰电子厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the anti-siphon backflow function of the above-mentioned flush valve all depends on the vacuum breaker, and the structure of the vacuum breaker on the flush valve is usually relatively simple and fragile, and a part of the structure is exposed to the outside world, which is easy to The anti-siphon valve plate is stuck due to foreign objects or structural strength problems
If the anti-siphon valve is stuck or the anti-siphon effect is not good and cannot be opened, the sewage in the storage tank will appear siphon backflow when the water supply network is cut off, polluting the tap water system

Method used

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  • Anti-siphon backflow flushing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, with reference to figure 1 , figure 2 , The water inlet valve body 1 and the upper flush valve body 2 and the lower flush valve body 3 on both sides are injection molded as a whole. A conduction pipe 6 is connected between the upper flush valve body 2 and the lower flush valve body 3, and the conduction pipe 6 is integrally formed on one side of the water inlet valve body 1 and the two flush valve bodies by injection molding, and the upper flush water The cavity 22 and the lower flush water cavity 31 are directly connected by the conduction pipe 6, so that the upper flush water port and the lower flush water port of the toilet are connected to form a normally open flow channel, which has the effect of pressure relief and emptying.

[0034] The conduit 6 includes a long hole section 61 extending along the length direction of the water inlet chamber 11 , and a short hole section 62 connecting the long hole section 61 and the flushing chamber. The long h...

Embodiment 2

[0040] Embodiment two, refer to figure 2 , Figure 6 The difference between this embodiment and Embodiment 1 is that the water inlet valve body 1 and the upper flush valve body 2 and the lower flush valve body 3 on both sides can be integrally formed, or can be split and detachable by bolts and nuts. connected. The outer walls of the upper flush valve body 2 and the lower flush valve body 3 are provided with connecting holes 25 penetrating from the inner wall of the flushing chamber toward the outside, and the two ends of the conduction pipe 6 are respectively inserted into the two connecting holes 25, and then It is fixed by screw sleeves or other fasteners to facilitate disassembly and replacement.

Embodiment 3

[0041] Embodiment 3, the difference between this embodiment and Embodiment 2 is that the conduction tube 6 is a transparent tube made of transparent material, and the transparent conduction tube 6 is convenient for the user to observe the flow direction of the internal liquid and confirm that the upper flush water chamber 22 And whether it is emptied in the lower flush water chamber 31. However, in the scheme where the conduction pipe 6 is integrally formed with the valve body, the conduction pipe 6 can be integrally formed on the valve body through a two-color injection molding process.

[0042] The implementation principles of the three embodiments of the present application are as follows: when the toilet is flushed each time, the two electromagnetic valves 5 are all closed, because the upper flushing port of the toilet is connected to the outside air, and the position of the conduction pipe 6 is higher than that of the toilet tank. Therefore, the accumulated water in the u...

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Abstract

The invention relates to an anti-siphon backflow flushing valve. The anti-siphon backflow flushing valve comprises a water inlet valve body, an upper flushing valve body and a lower flushing valve body. A water inlet cavity is formed in the water inlet valve body, and an upper flushing cavity and a lower flushing cavity which are communicated with the water inlet cavity are formed in the upper flushing valve body and the lower flushing valve body respectively; electromagnetic valves are arranged on the upper flushing valve body and the lower flushing valve body; a communication pipe is arranged between the upper flushing valve body and the lower flushing valve body, and the communication pipe is communicated with the upper flushing cavity and the lower flushing cavity, so that an upper flushing opening and a lower flushing opening of a closestool are communicated to form a normally-open flow channel, the pressure relief and emptying effects are achieved, and accumulated water in the upper flushing pipe and the lower flushing pipe can be directly discharged downwards into a sewage pool through the lower flushing opening. When the closestool is in a static state and is installed at a high floor, and water supply of the water supply pipe network is cut off, the water supply pipe network can only suck air from the upper flushing opening through the communication pipe, accumulated water or dirt in a water storage pool cannot be sucked back, and the possibility that a public water supply pipe network system is polluted during siphon backflow is eradicated fundamentally.

Description

technical field [0001] The present application relates to the technical field of flush valves, in particular to an anti-siphon backflow flush valve. Background technique [0002] The jet siphon toilets on the market are provided with upper and lower flushing ports, and the water flow from the upper flushing port flows downward in a vortex pattern; the lower flushing port is located in the water storage tank and is aligned with the sewage outlet. The water flow in the upper flush nozzle and the lower flush nozzle realizes flushing through two independent and unrelated solenoid valves. The water flow from the flushing port forms a siphon to flush the dirt directly into the sewage outlet. After the flushing is completed, the two independent upper flushing water pipes and the lower flushing water pipe are kept full due to the effect of atmospheric pressure to prepare for the next cycle. [0003] The above-mentioned jet siphon toilet is usually equipped with a flush valve with t...

Claims

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Application Information

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IPC IPC(8): E03D1/36E03D9/16E03D11/17
CPCE03D1/36E03D9/16E03D11/17E03D2201/40
Inventor 黄锋
Owner 乐清市兴丰电子厂
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