new water pump pressure switch

Water pump pressure switch is a pressure switch that can be opened and closed automatically.

1:General pressure switch

The pressure difference of the pressure switch used in the automatic water pump is not large, generally within 0.05Mpa,The distance between the action position of the pressure switch and the release position is also not large,Because of the small difference of this kind of water pump pressure switch, the pressure holding water volume is small and the pressure holding time is short.

Due to leaks and other reasons, the pressure in the pump system quickly drops from the closing pressure（ the pressure when the water pressure rises and the water pump pressure switch cuts off the power) to the opening pressure(the pressure when the water pressure decreases and the water pump pressure switch is turned on）. ,The water pump will start on its own in a short time every few minutes. There are defects such as frequent starting, small control range, huge structure, etc., which greatly affects the service life of the pump and also brings transportation Great inconvenience.

2：The composition of the new water pump pressure switch

The pressure difference of the new water pump pressure switch is large, and the distance between the action position of the pressure switch and the release position is large, and it can be adjusted within a certain range，It is a long-life, small, compact water pump pressure switch.

The new water pump pressure switch includes a pressure tank, a pressure propulsion component installed in the pressure tank, a stroke control device, and an electric control device.One end of the pressure tank has a pressure fluid inlet, and the other end has a pressure tank back cover. The back cover is connected with the back encasement, and the electric control device is located in the back encasement.The pressure propulsion device is composed of a piston arranged in the pressure tank and an elastic device that biases the piston;The stroke control device is composed of a positioning sleeve, an adjusting sleeve, an adjusting screw, a limit nut, and a control wheel. The positioning sleeve and the piston are connected with a stopper.The outside of the positioning sleeve is in sliding fit with the inner wall of the pressure tank, wherein the positioning sleeve and the adjusting sleeve have a mating surface that can slide along the axial direction.The adjusting screw is slidably supported in a hole arranged on the back cover, one end is screwed with the adjusting sleeve, and the other end is connected with the control wheel; the electric control device is composed of a magnetic switch and a relay arranged in the back cover.

3：The working principle of the new water pump pressure switch

The working process of the new type water pump pressure switch is as follows: when the water pump starts, water enters the pressure tank, and the pressure inside the pipe increases due to the closure of the water outlet of the pipe, and the force acting on the piston also increases. After the force of the water on the piston exceeds the sum of the pre-pressure of the spring and the frictional force, the piston is pushed to move to the right, thereby moving the positioning sleeve until the piston contacts the adjusting sleeve, and pushing the adjusting screw to move to the right, and the control wheel moves accordingly. So that the insert (magnet) of the control wheel leaves the magnetic switch, the magnetic switch shrapnel is disconnected, so that the relay is disconnected, and the water pump is shut down when the power is cut off. At this time, the water pressure is the brake pressure.When the pressure in the tube is reduced due to water leakage, etc., the piston moves to the left under the action of the spring force, and the adjustment sleeve is dragged through the steps of the positioning hole to drive the adjustment screw to move to the left so that the control wheel at the end of the adjustment screw is close to the magnetic switch , Due to the attraction of the magnet, the magnetic switch shrapnel is combined (energized) to start the water pump.

4：The working advantages of the new water pump pressure switch

The advantage of the new water pump pressure switch is to use the cooperation between the pressure propulsion component and the stroke control device and the electric control device, as well as its unique internal structure, to realize the function of automatically adjusting the opening and closing of the water pump within a large pressure difference range, and it can also According to the needs of different pumps, the automatic switch of the water pump can adjust the start and brake pressure within a certain range.It avoids the frequent start of the water pump and prolongs the service life of the switch; at the same time, because the electric control device adopts a switch that is not easy to wear and uses a magnetic control, thus further ensuring the accuracy and durability of the water pump pressure switch; the utility model also has The advantages of compact structure, beautiful appearance and small size.