water purifier waterproof pressure switch

Abstract

The invention discloses a waterproof pressure switch of a water purifier. The waterproof pressure switch comprises a pressure driving portion, a lever, a spring device, a travel switch and a shell. The pressure driving portion comprises a piston. The head of the piston is connected with an elastic membrane in an abutting mode. A protruding arc surface is formed on the side, away from the head, of the piston. A sunken arc surface matched with the protruding arc surface is formed at the position, corresponding to the arc surface of the piston, on the upper surface of the lever. Due to the two matched arc surfaces, the piston and the lever are connected in an abutting mode. The shell comprises a main shell and an auxiliary shell. The main shell is in a cuboid shape. An opening through which the travel switch is allowed to pass is formed in one face of the main shell. The face, adjacent to the opening, of the main shell and a communicating pipe are integrally formed. The auxiliary shell is in a hollow prismatic shape and connected to the opening in a sleeving mode. A waterproof gasket is arranged between the auxiliary shell and the main shell in a padded mode. The waterproof pressure switch of the water purifier can have the advantages of being stable in performance, precise in preset pressure control, good in waterproof performance and the like.

Description

technical field [0001] The invention relates to a water purifier accessory, in particular to a water purifier waterproof pressure switch. Background technique [0002] The working principle of the pressure regulating switch is actually an automatic controller that receives a pressure signal and acts. It has a pressure setting function. When the pressure of the equipment system reaches or exceeds the upper limit set by the pressure controller, the controller will automatically cut off The circuit makes the equipment stop to play an automatic protection role. When the system pressure is lower than the lower limit of the set pressure, the controller automatically turns on the circuit to make the equipment return to normal work. [0003] In the prior art, the pressure switch of the water purifier generally includes a casing and internal components, wherein the internal components include a pressure driving part and a travel switch part, wherein the pressure driving part includes...

AI Technical Summary

Problems solved by technology

The pressure switch in the prior art usually has the defects of small adjustment range for preset pressure and low precision

At the same time, the structural design of the existing pressure switch is generally rough, and the stability and durability are poor.

Moreover, after the existing pressure switch is installed, the connecting pipe is arranged above the casing, and the surrounding environment is very humid, and as figure 1 As shown, the casing of the existing pressure switch usually includes a cover plate and a box body, the cover plate is arranged above the box body, the middle pipe passes through the cover plate and communicates with the inside of the box body, the cover plate is simply covered on the box body In this way, there will be a gap between the cover plate and the box body, and the external water will flow into the inside of the box body from the gap between the cover plate and the box body, which will eventually lead to the short circuit damage of the travel switch inside the box body.

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