CN202707456U

CN202707456U - Electronic pressure switch of water pump

Info

Publication number: CN202707456U
Application number: CN 201220435399
Authority: CN
Inventors: 赵华勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-30
Filing date: 2012-08-30
Publication date: 2013-01-30
Anticipated expiration: 2022-08-30

Abstract

The utility model relates to an electronic pressure switch of a water pump. The electronic pressure switch of the water pump comprises a lower frame, an upper under frame, a pressure bag, a pushing rod, a fixing plate, a support, a spring, a moving plate, a regulating rod and a control circuit, wherein the lower under frame and the upper under frame are fixedly connected, and the lower under frame is provided with a threaded through opening; the upper under frame is provided with a through opening and a lower stationary contact; the pressure bag is arranged between the lower under frame and the upper under frame and is pressed and matched by the lower under frame and the upper under frame, the lower end surface of the pressure bag is communicated with the threaded through opening of the lower under frame, and the upper end surface of the pressure bag is arranged in the through opening on the upper under frame; the bottom end of the pushing rod is arranged in the through opening of the upper under frame and is arranged on the upper end surface of the pressure bag, the top end of the pushing rod is provided with the spring, a step is arranged on the pressure bag, the step is provided with an upper movable contact and a lower movable contact, and the lower movable contact is align to the lower stationary contact on the upper under frame; the fixing plate is fixedly connected with the upper under frame, the fixing plate is provided with an upper stationary contact, and the upper stationary contact is aligned to the upper movable contact on the pushing rod; the support is fixedly connected with the upper under frame, the support is provided with the moving plate, a moving pair is formed by the moving plate and the support, the support is provided with one through opening, and the moving plate is provided with one threaded through opening; the regulating rod is arranged in the through opening of the support and is in threaded connection with the moving plate; and one end of the spring is arranged at the top end of the pushing rod, and the other end of the spring is arranged at the bottom end of the moving plate. According to the electronic pressure switch of the water pump, disclosed by the utility model, the distance between the power-on position and the power-off position of the water pump is enlarged, the frequency that the water pump is automatically started under the condition that a water faucet is switched off is greatly reduced, and the service lives of the electronic pressure switch and the water pump are effectively prolonged.

Description

The water pump electron pressure switch

Technical field

The utility model relates to a kind of pressure switch for water pump, specifically a kind of water pump electron pressure switch.

Background technique

In family supplied water, the normal employing in self-priming pump dress pressure switch achieved automation, when water tap is opened, and the energising of pressure switch action water pump, when water tap was closed, pressure switch place hydraulic pressure increases made again pressure switch action water pump close.Pressure switch control power on/off is automatically to realize by the pressure of water, but the pressure difference of existing pressure switch control power on/off is all little, generally in 0.05Mpa, its poor journey, the pump on-position and the de-energized distance that are pressure switch are also little, cause when the pump de-energized, owing to reasons such as water leakages, pressure switch will be back to on-position from de-energized at short notice starts water pump voluntarily, pressure switch action water pump cuts out, cause like this pressure switch when water tap is closed, can move frequently.This work frequently has a strong impact on the life-span of pressure switch and pump.

Summary of the invention

The purpose of this utility model is to provide a kind of pump on-position and de-energized apart from large water pump electron pressure switch.

The utility model is achieved in that this pressure switch for water pump comprises lower underframe, upper underframe, pressure bladder, push rod, fixed plate, support, spring, shifting board, adjustable lever and a control circuit; Described lower underframe and upper underframe are connected, and a screw thread port is arranged on it; One port and stationary contact are once arranged on the described upper underframe; Described pressure bladder is placed between lower underframe and the upper underframe, and by lower underframe and upper underframe compression fit, its lower end surface communicates with the screw thread port of lower underframe, and the upper-end surface is placed in the port on the underframe; Described push rod bottom is placed in the port on the underframe, and is placed in the upper-end surface of pressure bladder, and spring is being settled on the top, and step is arranged on it, and movable contact and lower movable contact on one are arranged on the step, and lower movable contact is facing to the lower stationary contact on the upper underframe; Described fixed plate and upper underframe are connected, and upper stationary contact is arranged on it, and upper stationary contact is facing to the upper movable contact on the push rod; Described support and upper underframe are connected, and are settling shifting board on the support, and shifting board and support form sliding pair, and a port is arranged on the support, and a screw thread port is arranged on the shifting board; Described adjustable lever is placed in the port on the support, and is threaded connection with shifting board; Described spring one end is placed in the push rod top, and the other end is placed in the shifting board bottom; Described control circuit comprises the D.C. regulated power supply that transformer, triode D1-D4, capacitor C 1 form, and also comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, upper stationary contact, upper movable contact, lower movable contact, lower stationary contact, triode Q1, triode Q2, relay K M1, relay K M2 and relay K M3; Resistance R 1 is connected with resistance R 2 and is accessed the D.C. regulated power supply end, and resistance R 1 and the branch of connecting of resistance R 2 are connected movable contact and lower movable contact; Relay K M1 coil one termination D.C. regulated power supply is anodal, and the other end is through relay K M2 coil access triode Q1 collector electrode; Relay K M2 often opens movable contact under joint one termination, stationary contact under another termination; The base stage of triode Q1 connects lower stationary contact; Resistance R 3 one termination D.C. regulated power supply negative poles, the other end is through the normally closed joint access of relay K M3 triode Q1 emitter; Relay K M3 coil one termination D.C. regulated power supply is anodal, the other end access triode Q2 collector electrode; The base stage of triode Q2 connects stationary contact; Resistance R 4 one termination D.C. regulated power supply negative poles, the other end access triode Q2 emitter.

The utility model should be connected with self-priming pump when installing, the rotation adjustable lever, promote the engaging pressure that the shifting board Compress Spring is regulated pressure switch by screw thread, it is like this work: when water tap is opened, pump housing internal pressure reduces, the screw thread passage port hydraulic pressure that is lower underframe in the pressure switch reduces, spring can push away push rod and move down, lower movable contact to the push rod contacts with the lower stationary contact on the upper underframe, triode Q1 base stage energising this moment, the coil electricity of relay K M1 and relay K M2 is with the power end energising of often driving the water pump that joint is connected of relay K M1.When water tap is closed, pump housing internal pressure increases, the screw thread passage port hydraulic pressure that is lower underframe in the pressure switch increases, pressure bladder can push away push rod and rise, lower movable contact on the push rod separates with lower stationary contact on the upper underframe, because the joint of often opening of relay K M2 is connected, triode Q1 base stage continues energising, the power end of water pump continues energising, the upper movable contact that push rod rises on the push rod contacts with upper stationary contact on the fixed plate, triode Q2 base stage energising this moment, the coil electricity of relay K M3, the normally closed joint of relay K M3 disconnects, and causing relay K M1 coil blackout is the power end outage of water pump.

The invention has the beneficial effects as follows: increase pump on-position and de-energized distance, the automatically actuated frequency of pump greatly reduces in the situation so that close at water tap, Effective Raise the working life of pressure switch and pump.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the pump de-energized structural representation of the utility model pressure switch.

Fig. 2 is the pump on-position structural representation of the utility model pressure switch.

Fig. 3 is the control circuit wiring diagram of the utility model electron pressure switch.

Embodiment

Fig. 1 and Fig. 2 are the overall structure schematic diagram of the utility model pressure switch.Known by figure, this pressure switch for water pump comprises lower underframe 1, upper underframe 2, pressure bladder 3, push rod 4, fixed plate 5, support 6, spring 7, shifting board 8, adjustable lever 9 and a control circuit; Described lower underframe 1 is connected with upper underframe 2, and a screw thread port 16 is arranged on it; One port 15 and stationary contact 14 are once arranged on the described upper underframe 2; Described pressure bladder 3 is placed between lower underframe 1 and the upper underframe 2, and by lower underframe 1 and upper underframe 2 compression fit, its lower end surface communicates with the screw thread port 16 of lower underframe 1, and the upper-end surface is placed in the port 15 on the underframe 2; Described push rod 4 bottoms are placed in the port 15 on the underframe 2, and being placed in the upper-end surface of pressure bladder 3, spring 7 is being settled on the top, and step 12 is arranged on it, movable contact 11 and lower movable contact 13 on one are arranged on the step 12, and lower movable contact 13 is facing to the lower stationary contact 14 on the upper underframe 2; Described fixed plate 5 is connected with upper underframe 2, and upper stationary contact 10 is arranged on it, and upper stationary contact 10 is facing to the upper movable contact 11 on the push rod 4; Described support 6 is connected with upper underframe 2, is settling shifting board 8 on the support 6, and shifting board 8 forms sliding pair with support 6, and a port is arranged on the support 6, and a screw thread port is arranged on the shifting board 8; Described adjustable lever 9 is placed in the port on the support 6, and is threaded connection with shifting board 8; Described spring 7 one ends are placed in push rod 4 tops, and the other end is placed in shifting board 8 bottoms.

Fig. 3 is the control circuit wiring diagram of the utility model electron pressure switch.Known by figure, described control circuit comprises the D.C. regulated power supply that transformer, triode D1-D4, capacitor C 1 form, and also comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, upper stationary contact 10, upper movable contact 11, lower movable contact 13, lower stationary contact 14, triode Q1, triode Q2, relay K M1, relay K M2 and relay K M3; Resistance R 1 is connected with resistance R 2 and is accessed the D.C. regulated power supply end, and resistance R 1 is connected movable contact 11 and lower movable contact 13 with the branch of connecting (being the A point) of resistance R 2; Relay K M1 coil one termination D.C. regulated power supply is anodal, and the other end is through relay K M2 coil access triode Q1 collector electrode; Relay K M2 often opens movable contact 13 under joint one termination, and stationary contact 14 under another termination; The base stage of triode Q1 connects lower stationary contact 14; Resistance R 3 one termination D.C. regulated power supply negative poles, the other end is through the normally closed joint access of relay K M3 triode Q1 emitter; Relay K M3 coil one termination D.C. regulated power supply is anodal, the other end access triode Q2 collector electrode; The base stage of triode Q2 connects stationary contact 10; Resistance R 4 one termination D.C. regulated power supply negative poles, the other end access triode Q2 emitter.

In addition to the implementation, the present invention also has other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation one-tenth, all drop in the protection domain of requirement of the present invention.

Claims

1. water pump electron pressure switch, it is characterized in that: this pressure switch for water pump comprises lower underframe (1), upper underframe (2), pressure bladder (3), push rod (4), fixed plate (5), support (6), spring (7), shifting board (8), adjustable lever (9) and a control circuit; Described lower underframe (1) is connected with upper underframe (2), and a screw thread port (16) is arranged on it; One port (15) and stationary contact (14) are once arranged on the described upper underframe (2); Described pressure bladder (3) is placed between lower underframe (1) and the upper underframe (2), by lower underframe (1) and upper underframe (2) compression fit, its lower end surface communicates with the screw thread port (16) of lower underframe (1), and the upper-end surface is placed in the port (15) on the underframe (2); Described push rod (4) bottom is placed in the port (15) on the underframe (2), and be placed in the upper-end surface of pressure bladder (3), spring (7) is being settled on the top, step (12) is arranged on it, movable contact on one (11) and lower movable contact (13) are arranged on the step (12), and lower movable contact (13) is facing to the lower stationary contact (14) on the upper underframe (2); Described fixed plate (5) is connected with upper underframe (2), and upper stationary contact (10) is arranged on it, and upper stationary contact (10) is facing to the upper movable contact (11) on the push rod (4); Described support (6) is connected with upper underframe (2), is settling shifting board (8) on the support (6), and shifting board (8) forms sliding pair with support (6), and support has a port on (6), and a screw thread port is arranged on the shifting board (8); Described adjustable lever (9) is placed in the port on the support (6), and is threaded connection with shifting board (8); Described spring (7) one ends are placed in push rod (4) top, and the other end is placed in shifting board (8) bottom;

Described control circuit comprises the D.C. regulated power supply that transformer, triode D1-D4, capacitor C 1 form, and also comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, upper stationary contact (10), upper movable contact (11), lower movable contact (13), lower stationary contact (14), triode Q1, triode Q2, relay K M1, relay K M2 and relay K M3; Resistance R 1 is connected with resistance R 2 and is accessed the D.C. regulated power supply end, and resistance R 1 and the branch of connecting of resistance R 2 are connected movable contact (11) and lower movable contact (13); Relay K M1 coil one termination D.C. regulated power supply is anodal, and the other end is through relay K M2 coil access triode Q1 collector electrode; Relay K M2 often opens movable contact (13) under joint one termination, stationary contact under another termination (14); The base stage of triode Q1 connects lower stationary contact (14); Resistance R 3 one termination D.C. regulated power supply negative poles, the other end is through the normally closed joint access of relay K M3 triode Q1 emitter; Relay K M3 coil one termination D.C. regulated power supply is anodal, the other end access triode Q2 collector electrode; The base stage of triode Q2 connects stationary contact (10); Resistance R 4 one termination D.C. regulated power supply negative poles, the other end access triode Q2 emitter.