Anti-backflow device

Abstract

The utility model relates to the technical field of massage bathtub equipment, and discloses an anti-backflow device which comprises a shell, an inlet and an outlet which are communicated with the interior of the shell are formed in the two sides of the shell respectively, a plurality of liquid accumulation cavities are formed in the shell and are communicated with one another, a partition plate is arranged in each liquid accumulation cavity, and the partition plates are arranged in the shell. An up-down rotary and coiled channel is formed from the inlet to the outlet; according to the utility model, by optimizing the structure of the internal liquid accumulation cavity, the occurrence probability of a water flow backward flowing phenomenon is effectively reduced, so that the probability that the air pump is damaged due to water flow backward flowing is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to massage bath equipment technical field especially relates to a prevent back flow device. BACKGROUND

[0002] With the continuous progress of science and technology, people's demand for quality of life is higher and higher, massage bath gradually popular, use time is also more and more frequent. The air pump of massage cylinder is one of its core components, mainly through the injection of air to realize the unique hydrotherapy effect; in order to prevent the water flow back flow and damage the air pump when the air pump stops working, the water level changes or the air pressure changes, it is usually necessary to set up the prevent back flow device, the structure of the existing prevent back flow device is unreasonable, the air pump is damaged by the water flow back flow. Therefore, an urgent need to reduce the prevent back flow device of water flow back flow. SUMMARY

[0003] The utility model discloses a prevent back flow device, through the optimization of its internal liquid accumulation cavity structure, effectively reduce the occurrence probability of water flow back flow phenomenon, thereby reduce the probability of air pump damage by water flow back flow.

[0004] The utility model discloses the following technical scheme:

[0005] A prevent back flow device, including the casing, the casing both sides are provided with the entrance and the exit with its inside lead through respectively, the casing is provided with a plurality of liquid accumulation cavities in, wherein a plurality of the liquid accumulation cavities lead through, every liquid accumulation cavity is provided with the baffle, to form the channel that rotates and coils from the entrance to the exit.

[0006] Preferably, the adjacent liquid accumulation cavities are lead through by the overflow port arranged above them.

[0007] Preferably, the height of the overflow port is not lower than the height of the outlet.

[0008] Preferably, the height of the overflow port is higher than the height of the outlet.

[0009] Preferably, the inlet is located in the upper portion of one side of the casing.

[0010] Preferably, the outlet is located in the upper portion of the side of the casing away from the inlet, and the opening thereof is arranged downward.

[0011] Preferably, the liquid accumulation cavities are of the same height.

[0012] Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a plurality of effusion cavities are arranged and a partition is arranged in the effusion cavity, a spiral winding channel can be formed in the shell from the outlet to the inlet, on the one hand, the storage space is increased, on the other hand, the path of water flow in the shell to the inlet is prolonged, the probability that the air pump is damaged due to water level backflow caused by water level change is effectively reduced, and the service life of the equipment is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a sectional view of the embodiment of the application. DETAILED DESCRIPTION

[0014] The utility model will be clearly and completely described below in combination with the drawings and embodiments:

[0015] As Figure 1 shown, the utility model discloses a kind of anti backflow device, including shell 1, the inlet 2 and outlet 3 of being communicated with its inside are respectively arranged in the both sides of shell 1, inlet 2 end is communicated with air pump, for air flow to be blown into bathtub;In the embodiment, inlet 2 is located in the upper portion of one side of shell 1, and outlet 3 is located in the upper portion of the side of shell 1 away from inlet 2, and its opening is arranged downward, and inlet 2 and outlet 3 are all arranged in upper portion, and the probability of water flow backflow can be reduced by increasing the height of water flow into and discharge;Multiple effusion cavities 4 are arranged in the shell 1, to increase the storage space of water flow, wherein multiple effusion cavities 4 are communicated between them, to ensure that from inlet 2 to outlet 3 is smooth, so that air flow is normally blown during use;Multiple effusion cavities 4 are preferably arranged as the same height structure;Partition 5 is arranged in each effusion cavity 4, to form spiral winding channel from inlet 2 to outlet 3, which can effectively increase the flow path of water flow into shell 1 to inlet 2, thereby further reducing the probability that water flow overflows from inlet 2 into air pump, and ensuring the service life of air pump.

[0016] Among them, adjacent effusion cavities 4 are communicated by overflow port 6 arranged above, to improve overflow height and reduce the probability that water flow backflows into air pump;Partition 5 is arranged at the top of effusion cavity 4, and the bottom is provided with a gap with the bottom of effusion cavity 4, to form a communication channel, so that spiral winding channel can be formed from outlet 3 to inlet 2, to increase the path of water flow backflow and reduce the probability of water flow overflow;In addition, the height of overflow port 6 is not lower than the height of outlet 3, preferably higher than the height of outlet 3, to further increase the overflow height and reduce the probability of water flow backflow, and ensure the normal work of air pump.

[0017] Further, the bottom of the liquid accumulation cavity 4 in the embodiment is preferably provided as a circular arc structure, and the top of the overflow port 6 is also preferably provided as a circular arc structure, so that the water in the liquid accumulation cavity 4 is smoothly blown out by opening the air pump during work, the existence of cleaning dead angles is reduced, and the smooth air flow from the outlet 3 during work is facilitated. The bottom of the liquid accumulation cavity 4 and the top of the overflow port 6 in the embodiment can also be provided as other structures according to actual needs, and the specific adjustment can be made according to the use needs.

[0018] In use, the anti-backflow device is connected to the air pump, and the air flow blown out by the air pump enters the anti-backflow device, which blows out the residual water in the liquid accumulation cavity 4 from the channel and sprays it into the bathtub through the air nozzle. When the air pump stops working, due to the shaking of the water, part of the backflow water will overflow the high position of the outlet 3 and reach the liquid accumulation cavity 4. Since the overflow port 6 is higher than the water level at this time, the backflow water will not overflow the overflow port 6 when the liquid accumulation cavity 4 near the outlet 3 is not filled. When the liquid accumulation cavity 4 near the outlet 3 is full, part of the backflow water continues to overflow the overflow port 6 and reaches the next liquid accumulation cavity 4. Since the inlet 2 is higher than the water level, the backflow water will not overflow the position of the inlet 2 when the liquid accumulation cavity 4 is not filled. Therefore, through the optimized structure, the water backflowing to the air pump is almost zero, thereby protecting the air pump from damage.

Claims

1. A backwash prevention device, characterized by: The application relates to a shell with an inlet and an outlet on two sides, respectively, and a plurality of liquid accumulation cavities in the shell, wherein the liquid accumulation cavities are communicated with each other, and a partition is arranged in each liquid accumulation cavity to form a channel winding up and down from the inlet to the outlet.

2. The backflow preventer of claim 1, wherein: The adjacent liquid accumulation cavities are communicated through an overflow port arranged above the liquid accumulation cavities.

3. The backflow preventer of claim 2, wherein: The height of the overflow port is not lower than the height of the outlet.

4. The backflow preventer of claim 3, wherein: The height of the overflow port is higher than the height of the outlet.

5. The backflow preventer of claim 1, wherein: The inlet is arranged at the upper part of one side of the shell.

6. The backflow preventer of claim 1, wherein: The outlet is arranged at the upper part of the side of the shell away from the inlet, and the outlet is arranged downward.

7. The backflow preventer of claim 1, wherein: The liquid accumulation cavities have the same height.

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