CN209976756U - Electronic pressure controller convenient to adjust - Google Patents

Abstract

The utility model discloses an electronic pressure controller convenient to adjust, including casing and the control circuit board that has into, water outlet interface, the casing includes a pressure chamber and the pressurizer who is connected with the pressure chamber, it communicates the pressure chamber to advance, water outlet interface, still be equipped with the pressure sensor who is connected with the control circuit board electricity in the casing, flow sensor, when the flow signal value that flow sensor output is less than or equal to the shut down flow value of settlement, control circuit board exports a shut down signal to the water pump, the pressurizer makes the water pressure of pressure chamber maintain the state when the water pump shuts down, when water outlet interface has the flow to form, the pressurizer makes the water pressure of pressure chamber descend gradually; when the pressure signal value output by the pressure sensor is smaller than or equal to the set starting pressure value, the control circuit board outputs a starting signal to the water pump. The utility model discloses can reduce the start-up frequency of water pump effectively to make the pressure of supply channel remain stable, ensure the water supply of water pump and the demand phase-match of demand end simultaneously.

Description

Electronic pressure controller convenient to adjust

Technical Field

The utility model relates to a water pump control technical field, concretely relates to electronic pressure controller of convenient regulation.

Background

In the existing water supply system of the water pump, in order to realize the normal operation and automatic control of the water pump, a pressure controller for controlling the operation state of the water pump is generally required to be configured. The pressure controller usually includes a plastic casing, set up a water inlet interface and a water outlet interface that can connect in the water supply line on the casing, set up in the casing and include one with advance, the sealed chamber that the delivery port communicates, one is sealed with the pressure chamber and separates, be equipped with the pressure sensor of detectable water pressure in the pressure chamber, be equipped with corresponding control circuit board in the sealed chamber. When the water pump starts to work, the pressure cavity communicated with the water inlet and outlet ports in the shell is filled with water to generate certain water pressure, and the pressure sensor in the pressure cavity can detect the water pressure and transmit a pressure signal to the control circuit board. When the water pump is just powered on, the pressure in the pressure cavity is zero, the control circuit board outputs a starting signal to the water pump, and the water pump starts to operate, so that water is supplied to a water supply system; when the pressure signal output by the pressure sensor is greater than a set value, the water supply is greater than the requirement, the control circuit board can output a stop signal to the water pump at the moment, and the water pump stops supplying water to the water supply system, so that the overhigh water pressure of the water supply system is avoided, and the water pump is prevented from being overloaded; when the pressure of the water supply system detected by the pressure sensor is lower than a set value, the water pump is shut down, namely the water supply is less than the requirement, at the moment, the control circuit board can output a starting signal to the water pump, and the water pump starts to operate and supplies water to the water supply system. That is, the pressure controller can realize the automatic control of water pump, ensures the water supply demand of water supply system, avoids the overload of water pump simultaneously.

However, the existing water pump pressure controller has the following defects: because the pressure controller outputs the 'on' or 'off' signal, when the water demand of the water supply system is discontinuous and unstable, the water pump needs to be frequently started and stopped to meet the water supply demand, on one hand, the water pump is easily damaged due to frequent starting, and on the other hand, when the water pump restarts to supply water, the water pressure of the water supply pipeline has a process of gradually rising from low to high, thereby affecting the stability of the water pressure and the flow. When a user just opens the faucet, transient no-water and hysteresis phenomena are easy to occur. Secondly, because the length of water supply line, the crooked degree and the structural quantity of valve, tap etc. all can form certain pressure drop, consequently, the demand situation of water end can have great error through the water pressure judgement of measuring the water supply end, therefore leads to the water supply of water pump to be unable to match with the true demand of water end completely difficultly easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing water pump pressure controller can make the water pump frequently start and be difficult to maintain the pressure stability of supply channel and be difficult to realize the water supply of water pump and the demand of demand end and match completely, providing an electronic pressure controller who conveniently adjusts, can reduce the start-up frequency of water pump effectively, and make the pressure maintenance of supply channel stable, ensure the water supply of water pump and the demand phase-match of demand end simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electronic pressure controller convenient for adjustment comprises a shell with a water inlet interface and a water outlet interface, and a control circuit board arranged in the shell, wherein the shell comprises a pressure cavity, the water inlet interface and the water outlet interface are coaxially communicated with the pressure cavity, the shell is also internally provided with a pressure sensor capable of detecting the water pressure of the pressure cavity and a flow sensor capable of detecting the flow of the water inlet interface or the water outlet interface, the pressure sensor and the flow sensor are electrically connected with the control circuit board, when the flow signal value output by the flow sensor is less than or equal to a set shutdown flow value, the control circuit board outputs a shutdown signal to a water pump, a pressure maintaining device at the moment enables the water pressure of the pressure cavity to be maintained in a state when the water pump is shut down, and when the flow is formed at the water outlet interface, the pressure maintaining; when the pressure signal value output by the pressure sensor is smaller than or equal to the set starting pressure value, the control circuit board outputs a starting signal to the water pump.

First, the utility model discloses a controller includes a flow sensor and a pressure sensor, like this, when the casing through the interface of intaking and go out water interface connection in the supply channel, the discharge of flow sensor detectable pipeline, and pressure sensor is the water pressure in the detectable pressure chamber then. When the valve is closed at the demand end, so that the flow is gradually reduced to a set shutdown flow value, even the flow is completely reduced to zero, the flow sensor outputs a flow signal to the control circuit board, and the control circuit board outputs a shutdown signal to the water pump, so that the water pump is timely shut down, and the overload phenomenon of the water pump is avoided. When the valve at the demand end is opened again to gradually increase the water output, the water pressure in the water supply pipeline and the pressure cavity is reduced. When the water pressure of the pressure cavity is equal to or even lower than the set starting pressure value, the control circuit board can output a starting signal to the water pump according to the received signal of the pressure sensor, so that the water pump is started, water supply is supplemented in time, and the water supply requirement of a demand end is met.

In the prior art, the on-off of a water pump is usually controlled by a pressure sensor, and when the water supply is insufficient and the pressure is reduced, a starting signal is output to start the water pump; when the demand is reduced and the pressure is increased, a shutdown signal is output to stop the water pump. However, the change of the pipeline pressure cannot completely reflect the water supply requirement of the system, and when the water output of the water pump is greater than the requirement of the demand end, even if the demand end has a normal water supply requirement, the water supply pipeline has a normal flow, and the pipeline pressure may increase. If the water pump is closed by outputting a shutdown signal at the moment, the problem that the water supply requirement of a demand end cannot be met is caused, and when the pressure of the water supply pipeline needs to be reduced, the water pump is restarted, so that the water pump is frequently started, and the pressure of the water supply pipeline generates large fluctuation.

And the controller of the utility model controls the water pump to be closed through detecting the flow signal and controls the water pump to be started through detecting the pressure signal. Therefore, as long as the flow value of the water supply pipeline is larger than the set shutdown flow value, the controller enables the water pump to be in a working state all the time, and therefore the water supply requirement of a demand end is guaranteed. It will be appreciated that the water flow rate of the water supply line is the basis for truly reflecting the demand for water at the demand side. Therefore the utility model discloses can ensure water supply system's water supply demand and maintain the pressure stability of supply channel, and then reduce the frequency of opening and close of water pump.

Preferably, the housing comprises an adjusting cavity arranged side by side with the pressure cavity, an isolation diaphragm with elasticity is arranged between the pressure cavity and the adjusting cavity, so that the pressure cavity and the adjusting cavity are sealed and isolated, and an adjusting spring abutting against the isolation diaphragm is arranged in the adjusting cavity.

In the existing water supply system of the water pump, when the valve is opened at the demand end to discharge water, the water pressure in the controller cannot be rapidly reduced in a complete synchronization manner, that is, a hysteresis effect exists in the control of the starting of the water pump by the pressure sensor, so that the instability of the water pressure and the water flow at the demand end is caused. The utility model comprises an adjusting cavity which is arranged side by side with a pressure cavity, thus, when the water pump works, water enters the pressure cavity and the pressure rises, the water pressure of the pressure cavity acts on the isolating diaphragm, so that the isolating diaphragm overcomes the elasticity of the adjusting spring and protrudes and deforms towards one side of the adjusting cavity, and the volume of the pressure cavity is increased at the moment; when the water pump is shut down, the elastic force of the isolation diaphragm and the elastic force of the adjusting spring enable the water pressure in the pressure cavity and the pressure of the water supply pipeline to be maintained at the pressure value when the water pump is shut down, and the water supply pipeline is in a pressure maintaining state at the moment; when the demand end opens the valve to start water outlet, the elastic force formed by the isolation diaphragm and the adjusting spring can ensure that the pressure of the pressure chamber and the pressure of the water supply pipeline keep a gentle descending process in a short time. At the moment, the pressure diaphragm outputs water in the pressure cavity outwards through the water outlet interface so as to supplement the short water supply requirement of the water supply pipeline before the water pump is started, thereby avoiding the short fluctuation of water pressure and water flow at the demand end; when the water pressure of the pressure cavity detected by the pressure sensor is reduced to be equal to or even lower than a set starting pressure value, the control circuit board outputs a starting signal to the water pump according to the received signal of the pressure sensor, so that the water pump is started to supply water timely, the water supply requirement of a demand end is met, the water pressure of the pressure cavity rises again at the moment, and the isolation diaphragm bulges and deforms towards one side of the adjusting cavity again. It can be understood that we can make the isolation diaphragm as soft as possible to reduce its elastic modulus, and then be convenient for the deformation of isolation diaphragm, make the pressure chamber can output sufficient water volume to the water supply line before the water pump starts up, avoid the flow of water supply line to appear disconnected cliff formula sudden change, and the regulating spring then can make the pressure chamber maintain sufficient pressure.

Preferably, the flow sensor comprises a flow floater inserted at the inner end of the water inlet interface in an axially movable manner, a limit baffle is arranged in the pressure cavity, a check spring is arranged between the flow floater and the limit baffle, magnetic steel is arranged on the flow floater, and a reed pipe corresponding to the magnetic steel is arranged on the control circuit board.

When the water pump supplies water for the water supply pipeline, water flow enters the pressure cavity through the water inlet interface, and at the moment, the water flow impacts the flow floater, so that the flow floater inserted at the inner end of the water inlet interface overcomes the elastic force of the check spring and moves towards one side of the limiting baffle. That is, when the water supply line supplies water normally, the flow float stays at a position close to one side of the limit baffle; when the water flow of the water supply pipeline is reduced, the impact of the water flow on the flow floater is reduced, and the flow floater moves towards one side of the water inlet connector by the check spring; when the flow is gradually reduced to a set shutdown flow value, even the flow is completely reduced to zero, the magnetic steel on the flow floater is close to the reed pipe of the control circuit board, the reed pipe can output a signal to the control circuit board, and the control circuit board can output a shutdown signal to the water pump so as to timely shut down the water pump and avoid the overload phenomenon of the water pump. The flow float at this time stays at a position close to the water inlet port side. It can be understood that the control circuit board and the pressure cavity can be separated and hermetically arranged, so that short circuit of the control circuit board is avoided, and the magnetic steel and the reed pipe can realize non-contact induction, so that output of flow signals is facilitated.

Preferably, the shell comprises a pressure barrel body and a control box body arranged on the pressure barrel body, the pressure cavity is formed in the pressure barrel body, and the control circuit board is arranged on the inner side wall, close to the pressure barrel body, of the control box body.

Through the connection of the control box body and the pressure barrel body, the isolation and the sealing of the control box body and the pressure cavity can be conveniently realized, the short circuit and the damage of a control circuit board in the control box body are avoided, and meanwhile, the reed pipe on the control circuit board in the installation shell can be ensured to be close to the magnetic steel on the flow floater in the pressure cavity as much as possible.

Preferably, the control box body comprises a switch box body and a switch panel arranged at the opening of the switch box body, and a joint ring is arranged at the joint of the switch panel and the switch box body.

On one hand, the joint ring is beneficial to realizing the sealing connection between the switch panel and the switch box body, and on the other hand, the switch panel and the switch box body can form an obvious boundary line, so that the thickness of the control box body is obviously reduced visually, and the appearance attractiveness of the whole pressure controller is improved.

Preferably, the pressure sensor comprises an adjusting knob which can rotate from a lowest trigger pressure position to a highest trigger pressure position, and when the adjusting knob is located at the lowest trigger pressure position, the pressure signal value output by the pressure sensor is less than or equal to a set minimum starting pressure value; when the adjusting knob is located at the highest triggering pressure position, the pressure signal value output by the pressure sensor is smaller than or equal to the set maximum starting pressure value.

It is known that when the pressure in the pressure chamber reaches a value, the pressure sensor can output a pressure signal by the control circuit board. The utility model discloses a pressure sensor includes an adjust knob, and through rotating adjust knob, we can conveniently adjust the minimum trigger pressure and the highest trigger pressure that pressure sensor corresponds, and control circuit board then can set up corresponding minimum start pressure value and the biggest start pressure value to be applicable to the water supply system of the water pump of different power and different demands.

Preferably, a deformation groove is arranged on the bottom wall of the outer side of the pressure barrel body, a pressure through hole communicated with the pressure cavity is arranged on the bottom wall of the deformation groove, the pressure sensor comprises an adjusting pipe seat arranged on the side wall of the control box body and corresponding to the deformation groove, the adjusting pipe seat comprises a sealing ring rib positioned in the deformation groove and an adjusting pipe extending from the sealing ring rib to the side far away from the deformation groove, the axis of the adjusting pipe is vertical to the axis of the water inlet and outlet interfaces, an elastic diaphragm is arranged between the sealing ring rib and the deformation groove, a touch rod elastically pressing the elastic diaphragm is arranged in the adjusting pipe, a radial through hole is arranged on the side wall of the adjusting pipe, the control circuit board comprises a microswitch arranged at the position corresponding to the radial through hole, the touch rod comprises a starting section, a pressure maintaining section and a touch surface, a touch ball is arranged in the radial through hole, the outer side of the touch ball is attached to a touch key of the microswitch, when the water pressure of the pressure cavity is less than or equal to a set starting pressure value, the touch rod pushes the elastic membrane to move to a starting position towards one side of the deformation groove, the touch ball at the moment is attached to a starting section of the touch surface, and the touch key of the microswitch pops outwards; when the water pressure of pressure chamber is greater than the start pressure value of settlement, elastic diaphragm pushes the touch rod and moves to the start pressure position towards keeping away from deformation recess one side, and the pressure maintaining section of touching surface is leaned on to the touch ball this moment, touches the touch key that the micro-gap switch was pressed to the touch ball.

The utility model discloses a pressure sensor adopts the mode of electromechanical combination, and ultimate signal is exported by micro-gap switch, and micro-gap switch's the key that touches is then controlled by corresponding mechanical structure. Because the bottom wall of the deformation groove is provided with a pressure through hole communicated with the pressure cavity, when the pressure of the pressure cavity and the water supply pipeline is greater than a set starting pressure value or the water supply pipeline is in a pressure maintaining state, the water pressure of the pressure cavity acts on the elastic diaphragm through the pressure through hole to make the elastic diaphragm protrude and deform, thereby pushing the touch rod to move axially, at the moment, the pressure maintaining section on the touch surface of the touch rod is attached to the touch ball, the touch ball moves outwards along the radial direction in the radial through hole of the adjusting pipe to press down the touch key of the micro switch, at the moment, the micro switch can output an electric signal to the control circuit board, and the control circuit board enables. When the valve is opened at the demand end to discharge water, the water pressure of the pressure cavity is gradually reduced, at the moment, the elastic diaphragm retracts to elastically recover, and the touch rod moves in the axial direction in the reverse direction. When the water pressure of the pressure cavity is smaller than or equal to the set starting pressure value, the starting section of the touch surface of the touch rod is attached to the touch ball, the touch key of the microswitch pops outwards, the microswitch can output an electric signal to the control circuit board at the moment, and the control circuit board enables the water pump to start. That is, the actuating surface acts like a cam to control the actuation of the microswitch actuating member

As preferred, the control box body pastes and is equipped with the installation through-hole on the lateral wall that leans on pressure staving outside diapire, the opening internal thread connection that the deformation recess was kept away from to the control tube has the regulating pin, is equipped with the regulation pressure spring between regulating pin and touch rod, the regulating pin tip is equipped with the adjusting part who stretches out the control box body outward, the adjusting part includes the outer tube of echelonment, connects at the outer tube tip and stretches out the outer adjust knob of control box body, and the tip at the regulating tube is established to the main aspects cover of outer tube, and the one end splined connection that the pressure spring was kept away from to the regulating pin is.

It can be understood that when the water pressure in the pressure chamber acts on the elastic diaphragm, the elastic diaphragm can be protruded and deformed outwards only by overcoming the pre-pressing force formed by the adjusting spring on the touch rod, so that when the adjusting knob is rotated, the outer sleeve sleeved on the end part of the adjusting pipe can be driven to rotate, and the adjusting pin connected with the spline of the outer sleeve is driven to rotate in the adjusting pipe. The adjusting pin is in threaded connection with the adjusting pipe, and the adjusting pin moves axially at the same time, so that the pre-compression force of the adjusting spring can be changed, and the starting pressure value of the pressure sensor can be conveniently set and adjusted.

As preferred, be equipped with adjusting hole on the control box body, adjust knob's the inner is equipped with two at least group location joint structures, location joint structure includes that two are located the location arch in adjusting hole, is located the buckle that two location between the arch and the tip has the trip, forms positioning groove between two location archs, be equipped with the protruding muscle in axial location on the lateral wall of outer tube tip, the protruding muscle part screens in positioning groove in location, the inside wall of control box body is caught to the trip of buckle.

The utility model discloses an adjust knob passes through the buckle and forms the joint with the control box body to make things convenient for its assembly. In particular, the positioning convex rib on the outer side wall of the outer sleeve is clamped in a positioning clamping groove formed by two positioning bulges on the adjusting knob, so that the adjusting knob can transmit torque to the outer sleeve, and the positioning bulges in the adjusting through hole can conveniently position the adjusting knob in the adjusting through hole of the control box body. When we rotate adjusting knob, the trip of buckle can move on the inside wall of control box body, makes adjusting knob and control box body remain the joint state all the time, can not cause the hindrance to adjusting knob's rotation simultaneously.

Therefore, the utility model discloses following beneficial effect has: the starting frequency of the water pump can be effectively reduced, the pressure of a water supply pipeline is kept stable, and meanwhile the water supply of the water pump is ensured to be matched with the requirement of a demand end.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic sectional view of the present invention.

Fig. 4 is a schematic view of a structure of the pressure holding device.

Fig. 5 is a schematic diagram of one configuration of a flow sensor.

Fig. 6 is a schematic diagram of a pressure sensor.

Fig. 7 is a schematic diagram of one construction of the adjustment knob.

In the figure: 1. the device comprises a shell 11, a pressure cavity 12, a water inlet interface 13, a water outlet interface 14, a lower barrel 141, an adjusting cavity 15, a pressure barrel 152, a limit baffle 153, a deformation groove 154, a pressure through hole 16, a control box 161, an installation through hole 162, a sealing tube 163, a switch box 164, a switch panel 165, a joint ring 2, a control circuit board 21, a micro switch 211, a touch key 4, an isolation diaphragm 41, an adjusting spring 42, a pressure plate 5, a pressure stabilizing cavity 51, an input pipeline 52, an output pipeline 53, a one-way valve 54, a piston 55, a piston rod 56, a balance pressing block 57, a buffer pressure spring 6, a flow floater 61, a check spring 62, a magnetic steel 64, a sliding section 641, a flange 642, a sealing ring 65, a guide post 66, a guide strip 7, an adjusting tube seat 71, The adjusting device comprises an adjusting pipe 721, a radial through hole 73, an elastic membrane 74, a touch rod 741, a starting section 742, a pressure maintaining section 75, an adjusting pressure spring 76, a touch ball 77, an adjusting pin 78, an outer sleeve 781, a positioning convex rib 8, an adjusting knob 81, a positioning bulge 82, a buckle 83, a sealing cylinder 831 and a sealing ring groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, 2 and 3, an electronic pressure controller convenient for adjustment comprises a housing 1 made of plastic and a control circuit board 2 arranged in the housing, wherein the housing comprises a pressure chamber 11 and a pressure maintaining device connected with the pressure chamber, and a water inlet port 12 and a water outlet port 13 which are communicated with the pressure chamber are coaxially arranged on the housing. In addition, a pressure sensor for detecting the water pressure of the pressure cavity and a flow sensor for detecting the flow of the water inlet interface or the water outlet interface are also required to be arranged in the shell, the pressure sensor and the flow sensor are electrically connected with the control circuit board, so that flow signals and pressure signals can be output to the control circuit board, and the control circuit board correspondingly outputs signals for controlling the water pump to start or stop.

When the water pump is used, a water inlet connector of the shell is connected to an output port of the water pump, and a water outlet connector of the shell is connected with a downstream water supply pipeline. When the water pump starts to supply water, water flow enters the pressure cavity from the water inlet interface and flows out from the water outlet interface to enter a downstream water supply pipeline. That is, the water pump controller is connected in series in the water supply line.

When the water pump is in a starting state, if the downstream water demand is extremely low, even the valve is completely closed to stop water outlet, the water flow of the water supply pipeline is reduced to zero at the moment, thus, the flow signal value output by the flow sensor is smaller than or equal to the set shutdown flow value, the control circuit board outputs a shutdown signal to the water pump, so that the water pump stops running, and the pressure maintaining device maintains the water pressure of the pressure cavity in a state when the water pump is shut down. When the downstream begins to discharge water and the water outlet interface has flow formation, the pressure maintaining device gradually reduces the water pressure of the pressure cavity; when the pressure signal value output by the pressure sensor is smaller than or equal to the set starting pressure value, the control circuit board outputs a starting signal to the water pump, so that the water pump is started to meet the downstream water supply requirement.

Preferably, the housing includes a lower barrel 14 and a pressure barrel 15, one end of the lower barrel is open, the lower barrel and the pressure barrel are opposite to each other, a regulation chamber 141 is formed in the lower barrel, the pressure chamber is formed in the pressure barrel, and an isolation diaphragm 4 is disposed between the lower barrel and the opposite opening of the pressure barrel, so that the pressure chamber and the regulation chamber are sealed and isolated. In addition, an adjusting spring 41 is provided in the adjusting chamber, which presses against the isolating diaphragm. The isolating diaphragm, the adjusting cavity and the adjusting spring form the pressure maintaining device.

When the water pump works, water enters the pressure cavity and the pressure rises, the water pressure of the pressure cavity acts on the isolating diaphragm, so that the isolating diaphragm overcomes the elasticity of the adjusting spring and protrudes and deforms towards one side of the adjusting cavity, and the volume of the pressure cavity is increased; when the water pump is shut down, the elastic force of the isolation diaphragm and the elastic force of the adjusting spring enable the water pressure in the pressure cavity and the pressure of the water supply pipeline to be maintained at the pressure value when the water pump is shut down, and the water supply pipeline is in a pressure maintaining state at the moment; when the demand end opens the valve to start water outlet, the elastic force formed by the isolation diaphragm and the adjusting spring can ensure that the pressure of the pressure chamber and the pressure of the water supply pipeline keep a gentle descending process in a short time. At the moment, the pressure diaphragm outputs water in the pressure cavity outwards through the water outlet interface so as to supplement the short water supply requirement of the water supply pipeline before the water pump is started, thereby avoiding the short fluctuation of water pressure and water flow at the demand end; when the water pressure of the pressure cavity detected by the pressure sensor is reduced to be equal to or even lower than a set starting pressure value, the control circuit board outputs a starting signal to the water pump according to the received signal of the pressure sensor, so that the water pump is started to supply water timely, the water supply requirement of a demand end is met, the water pressure of the pressure cavity rises again at the moment, and the isolation diaphragm bulges and deforms towards one side of the adjusting cavity again.

Certainly, the two sides of the isolation diaphragm can be respectively provided with the pressing plates 42, the pressing plates on the two sides are fixedly connected through screws, the pressing plate close to the adjusting spring is provided with the positioning convex column, so that the adjusting spring is reliably positioned, and the adjusting spring is pressed on the pressing plates at the moment, so that the isolation diaphragm is prevented from being damaged.

Preferably, a control box 16 is arranged on the outer bottom wall of the pressure barrel body, the control box comprises a switch box body and a switch panel arranged at the opening of the switch box body, a joint ring is arranged at the joint of the switch panel and the switch box body, and the colors of the switch box body, the switch panel and the joint ring are not consistent. On one hand, the joint ring is beneficial to realizing the sealing connection between the switch panel and the switch box body, and on the other hand, the switch panel and the switch box body can form an obvious boundary line, so that the thickness of the control box body is obviously reduced visually, and the appearance attractiveness of the whole pressure controller is improved. And the control circuit board is arranged in the control box body, so that the control box body and the pressure cavity can be isolated and sealed, and the control circuit board in the control box body is prevented from being short-circuited and damaged.

As another preferable scheme, as shown in fig. 4, the pressure maintaining device includes a pressure maintaining chamber 5 vertically arranged, an output pipeline 52 and an input pipeline 51 communicated with the pressure chamber are arranged on the bottom wall of the pressure maintaining chamber, a one-way valve 53 communicated towards one side of the pressure chamber is arranged on the output pipeline, and a one-way valve communicated towards one side of the pressure maintaining chamber is arranged on the input pipeline, so that water in the pressure chamber can only enter the pressure maintaining chamber through the input pipeline, and water in the pressure maintaining chamber can only enter the pressure chamber through the output pipeline. In addition, a piston 54 which can move up and down is arranged in the pressure stabilizing cavity, a piston rod 55 which is vertically upward is arranged on the upper side of the piston, a balance pressing block 56 is arranged at the upper end of the piston rod, and a buffer pressure spring 57 is arranged between the piston and the bottom wall of the pressure stabilizing cavity.

Therefore, water in the pressure cavity enters the pressure stabilizing cavity through the input pipeline, and the water pressure of the pressure stabilizing cavity is kept consistent with that of the pressure cavity. When the water pump is in a working state or the water supply pipeline is in a pressure maintaining state with higher pressure, the piston is in a higher position in the pressure stabilizing cavity. When the valve is opened at the demand end to discharge water, the water pressure of the water supply pipeline and the pressure cavity begins to fall, and the water pressure of the pressure stabilizing cavity is higher than that of the pressure cavity at the moment, so that the water of the pressure stabilizing cavity enters the pressure cavity through the output pipeline and then enters the water supply pipeline through the water outlet interface, the flow stability of the water supply pipeline can be maintained, the balancing weight enables the piston to overcome the elasticity of the buffer spring and gradually move downwards, the elasticity of the buffer spring is gradually increased at the moment, and therefore the pressure of the piston acting on the water stored in the pressure stabilizing cavity is gradually reduced, and the water pressure of the pressure stabilizing cavity and the pressure cavity can be gradually. When the water pressure of the pressure cavity is reduced to be equal to or even lower than a set starting pressure value, the control circuit board outputs a starting signal to the water pump according to the received signal of the pressure sensor, so that the water pump is started to supply water in time, the water supply requirement of a demand end is met, the water pressure of the pressure cavity rises again at the moment, the water in the pressure cavity is supplied to the pressure stabilizing cavity through the input pipeline, the piston is pushed to move upwards gradually, the elastic force of the buffer spring is reduced gradually, and the water pressure of the pressure stabilizing cavity and the pressure cavity rises gradually.

It can be understood that water in the pressure stabilizing cavity forms circulation through the input pipeline and the output pipeline, so that the distance between the input pipeline and the output pipeline at the bottom of the pressure stabilizing cavity can be enlarged as much as possible, and therefore, a water storage dead angle formed in the pressure stabilizing cavity can be effectively avoided.

For the convenience of flow sensor can accurately detect the shut down flow value to make control circuit board to water pump output stop signal, as shown in fig. 5, the utility model discloses a flow sensor includes flow float 6, but flow float axial displacement inserts and establishes the inner that stretches into the pressure chamber at the interface of intaking, and the inherent axial of pressure chamber corresponds flow float department and sets up limit baffle 152 of connection on the pressure chamber inside wall, thereby makes flow float have one and is close to the trigger position of the interface of intaking, a holding position who is close to limit baffle. In addition, a check spring 61 is provided between the flow float and the limit baffle, a magnetic steel 62 is provided on the flow float, and a reed pipe (not shown) corresponding to the magnetic steel is provided on the control circuit board.

When the water pump supplies water for the water supply pipeline, water flow enters the pressure cavity through the water inlet interface, and impacts the flow floater at the moment, so that the flow floater inserted at the inner end of the water inlet interface overcomes the elastic force of the check spring and moves towards one side of the limiting baffle until the flow floater is completely positioned at a holding position by the limiting baffle. At the moment, the magnetic steel is far away from the reed switch, so the reed switch can not output signals to the control circuit board, and the water pump continuously operates to supply water; when the downstream water supply demand is reduced and the water flow of the water supply pipeline is reduced, the impact effect of the water flow on the flow floater is reduced, and the check spring enables the flow floater to move towards one side of the water inlet interface; when the flow is gradually reduced to a set shutdown flow value, even the flow is completely reduced to zero, the flow floater moves to a trigger position, the magnetic steel on the flow floater is close to the reed pipe of the control circuit board, the reed pipe can output a signal to the control circuit board, and the control circuit board can output a shutdown signal to the water pump, so that the water pump can be timely shut down, and the overload phenomenon of the water pump is avoided.

Preferably, control circuit board sets up on the inside wall that the control box body is close to pressure staving outside diapire, and the axis of the interface of intaking is parallel with the diapire that is close to the control box body on the pressure staving, and the magnet steel then sets up and is close to pressure staving diapire one side on the flow float to the tongue tube can be close to the magnet steel as far as possible when making the flow float be in the trigger position.

Further, the flow floater comprises a cylindrical sliding section 64 inserted in the water inlet interface, and a guide post 65 in a regular quadrangular prism shape extending from the outer end face of the sliding section to the limiting baffle, wherein a guide hole matched with the guide post is formed in the limiting baffle, the non-return spring is sleeved on the guide post to prevent the non-return spring from being distorted, and the end part of the guide post extends out of the non-return spring and is connected in the guide hole in a sliding mode. In addition, a flange 641 is disposed on the side surface of the sliding section exposed from the water inlet port, and a sealing ring 642 is disposed on the end surface of the flange close to the water inlet port. When the flow is zero, the non-return spring pushes the sliding section to enable the sealing ring to be tightly pressed between the flange plate and the end face of the water inlet interface. Thereby can avoid the rivers in the water supply pipeline behind the water pump shut down to flow into the pressure chamber through water outlet port backward flow effectively, flow out from water inlet port, make flow sensor play a check valve's effect simultaneously to cut off the water supply pipeline when the water pump stop work, prevent that the high pressure water backward flow in the water supply pipeline from causing the harm to the water pump.

In addition, we can set 3 guide bars 66 evenly distributed in the circumferential direction on the inner end edge of the sliding section in the water inlet interface. Like this, when the flow float received the impact of rivers and when staying the holding position, the slip section shifted out into water interface, and the gib block and the interface of intaking at this moment form sliding connection, avoid the flow float to deviate from in the interface of intaking on the one hand, and on the other hand makes the rivers accessible gib block that the interface of intaking got into space entering pressure chamber between the gib block, outwards flow from the interface of intaking again.

To facilitate the arrangement of the pressure sensor, as shown in fig. 6, a circular deformation groove 153 may be formed on the bottom wall of the outer side of the pressure barrel, and a pressure through hole 154 communicating with the pressure chamber may be formed on the bottom wall of the deformation groove. In addition, we can also set up the installation through-hole 161 corresponding to the deformation recess on the lateral wall that the control box body leans on the outside diapire of pressure staving, and pressure sensor is including setting up the regulation tube socket 7 in the installation through-hole, adjusts the tube socket including being located the sealed ring muscle 71 of deformation recess, by sealed ring muscle towards keeping away from the regulation pipe 72 that deformation recess one side extended. In addition, an elastic diaphragm 73 made of silica gel is arranged between the sealing ring rib and the deformation groove, so that the deformation groove and the adjusting pipe seat are sealed and isolated. An axially movable touch rod 74 and an adjusting pressure spring 75 capable of driving the touch rod to move are arranged in the adjusting pipe, so that the end part of the touch rod is elastically pressed against the elastic diaphragm. In addition, the side wall of the adjusting tube is provided with a radial through hole 721, the control circuit board comprises a microswitch 21 with an elastically resettable touch key 211, and the touch key of the microswitch is arranged opposite to the radial through hole. The side of the touch rod close to the radial through hole comprises a touch surface with a start section 741 and a pressure maintaining section 742, a movable touch ball 76 is arranged in the radial through hole, the inner side of the touch ball is abutted against the touch surface, and the outer side of the touch ball is abutted against the touch key of the micro switch.

Stop when the water pump, thereby the demand end stops to go out water and makes the supply channel be in when the pressurize state, the water pressure of pressure chamber is greater than the start pressure value of settlement, the water of pressure chamber passes through in the pressure through-hole gets into the deformation recess, and on the elastic diaphragm, make the elastic diaphragm towards the evagination deformation of regulating tube one side, thereby promote the touch rod and overcome the elasticity of adjusting the pressure spring and axial displacement to starting the pressurize position, the pressurize section on the contact surface of touch rod pastes and touches the ball this moment, the messenger touches the ball and radially moves outwards and pushes down micro-gap switch's touch key in the radial through-hole of regulating tube, micro-gap switch at this moment can be to the signal of telecommunication of control circuit board output, control circuit board. That is, the water pump is stopped to maintain the pressure in the water supply line.

When the valve is opened at the demand end to discharge water, the water pressure of the water supply pipeline and the pressure cavity is gradually reduced, at the moment, the elastic diaphragm retracts and elastically recovers, and the touch rod moves in the axial direction in the reverse direction. When the water pressure of the pressure cavity is smaller than or equal to the set starting pressure value, the pressure spring is adjusted to enable the touch rod to push the elastic membrane to move to the starting position towards one side of the deformation groove, the starting section of the touch surface of the touch rod moves to the position corresponding to the touch ball, the touch key of the microswitch pops outwards to be attached to the starting section, the microswitch outputs an electric signal to the control circuit board, and the control circuit board enables the water pump to be started. That is, the actuating surface acts like a cam to control the switching of the microswitch.

Preferably, the axis of the adjusting pipe is perpendicular to the axis of the water inlet and outlet interfaces, so that the impact force of the water flow on the pressure sensor is effectively avoided.

In order to facilitate adjustment of the starting pressure value set by the pressure controller, the adjusting pipe is connected with an adjusting pin 77 in an opening internal thread far away from the deformation groove, an adjusting pressure spring is arranged between the adjusting pin and the touch rod, and an adjusting part extending out of the control box body is arranged at the end part of the adjusting pin so as to rotate the adjusting pin by rotating the adjusting part. In addition, the adjusting part comprises an outer sleeve 78 with a second-level ladder, the large end of the outer sleeve is sleeved at the end part of the adjusting pipe, the small end of the outer sleeve is provided with an adjusting knob 8 extending out of the control box body, and one end of the adjusting pin, far away from the adjusting pressure spring, is connected in an inner hole at the small end of the outer sleeve through a spline. When the adjusting knob is rotated, the outer sleeve can be driven to rotate, and therefore the adjusting pin connected with the outer sleeve through the spline is driven to rotate in the adjusting pipe. Because the adjusting pin is in threaded connection with the adjusting pipe, the adjusting pin moves axially at the same time, so that the precompression and the precompression of the adjusting spring can be changed, and the starting pressure value of the pressure sensor can be conveniently set and adjusted.

Preferably, as shown in fig. 6 and 7, an adjusting through hole may be formed in the control box, four sets of positioning and clamping structures are disposed at the inner end of the adjusting knob, each positioning and clamping structure includes two positioning protrusions 81 located in the adjusting through hole, a positioning slot is formed between the two positioning protrusions, an axial positioning protruding rib 781 is disposed on the outer side wall of the small end of the outer sleeve, and the positioning protruding rib is partially clamped in the positioning slot, so that the adjusting knob can transmit torque to the outer sleeve. In addition, a buckle 82 with a clamping hook at the end part can be arranged between the two positioning bulges, the clamping hook of the buckle is hooked on the inner side wall of the control box body, and the outer side of the buckle and the outer side of the positioning convex rib are positioned on the same circle matched with the adjusting through hole. That is to say, the buckle is located the radial ascending outside of positioning slot, and the location bead screens is then located the radial ascending inboard of positioning slot. When we rotate the adjusting knob, the clamping hook of the clamping buckle can move on the inner side wall of the control box body, so that the adjusting knob and the control box body are always kept in a clamping state.

Finally, we can also arrange a sealing tube 162 extending along the axial direction at the edge of the adjusting through hole, and the inner end of the adjusting knob is provided with a sealing cylinder 83 which is rotatably arranged in the sealing tube, so that the adjusting knob can be reliably positioned in the adjusting through hole. In addition, a sealing ring groove 831 is arranged on the outer side surface of the sealing cylinder, and a sealing ring tightly attached to the inner side wall of the sealing pipe is arranged in the sealing ring groove, so that external liquid, water vapor and the like can be prevented from entering the control box body. In addition, the positioning protrusion and the buckle are arranged on the end surface of the sealing cylinder, and the hook of the buckle hooks the inner end surface of the sealing tube, so that the hook can be well matched with the control box body, and the adjusting knob can smoothly rotate.

Claims (9)

1. An electronic pressure controller convenient for adjustment comprises a shell with a water inlet interface and a water outlet interface, and a control circuit board arranged in the shell, and is characterized in that the shell comprises a pressure cavity, the water inlet interface and the water outlet interface are coaxially communicated with the pressure cavity, a pressure sensor capable of detecting the water pressure of the pressure cavity and a flow sensor capable of detecting the flow of the water inlet interface or the water outlet interface are also arranged in the shell, the pressure sensor and the flow sensor are electrically connected with the control circuit board, when the flow signal value output by the flow sensor is less than or equal to a set shutdown flow value, the control circuit board outputs a shutdown signal to a water pump, a pressure maintaining device at the moment enables the water pressure of the pressure cavity to be maintained in a state when the water pump is shut down, and when the flow is formed at the water outlet interface, the pressure; when the pressure signal value output by the pressure sensor is smaller than or equal to the set starting pressure value, the control circuit board outputs a starting signal to the water pump.

2. An adjustable electronic pressure controller as claimed in claim 1, wherein the housing includes an adjustment chamber arranged side by side with the pressure chamber, an isolation diaphragm having elasticity is provided between the pressure chamber and the adjustment chamber to seal the pressure chamber and the adjustment chamber, and an adjustment spring is provided in the adjustment chamber to press the isolation diaphragm.

3. The electronic pressure controller convenient for adjustment according to claim 1, wherein the flow sensor comprises a flow float inserted in the inner end of the water inlet port in an axially movable manner, a limit baffle is arranged in the pressure chamber, a check spring is arranged between the flow float and the limit baffle, magnetic steel is arranged on the flow float, and a reed pipe corresponding to the magnetic steel is arranged on the control circuit board.

4. The electronic pressure controller convenient for adjustment according to claim 1, wherein the housing comprises a pressure barrel body and a control box body arranged on the pressure barrel body, the pressure chamber is formed in the pressure barrel body, and the control circuit board is arranged on the inner side wall of the control box body close to the pressure barrel body.

5. The electronic pressure controller convenient for adjustment according to claim 4, wherein the control box body comprises a switch box body and a switch panel arranged at the opening of the switch box body, and a joint ring is arranged at the joint of the switch panel and the switch box body.

6. The electronic pressure controller convenient for adjustment according to claim 1, wherein the pressure sensor comprises an adjusting knob capable of rotating from a lowest triggering pressure position to a highest triggering pressure position, and when the adjusting knob is located at the lowest triggering pressure position, the pressure sensor outputs a pressure signal value smaller than or equal to a set minimum starting pressure value; when the adjusting knob is located at the highest triggering pressure position, the pressure signal value output by the pressure sensor is smaller than or equal to the set maximum starting pressure value.

7. The electronic pressure controller of claim 4, wherein the outer bottom wall of the pressure barrel is provided with a deformation groove, the bottom wall of the deformation groove is provided with a pressure through hole communicated with the pressure chamber, the pressure sensor comprises an adjusting tube seat arranged on the side wall of the control box body corresponding to the deformation groove, the adjusting tube seat comprises a sealing ring rib arranged in the deformation groove and an adjusting tube extending from the sealing ring rib to the side far away from the deformation groove, the axis of the adjusting tube is perpendicular to the axis of the water inlet and outlet ports, an elastic diaphragm is arranged between the sealing ring rib and the deformation groove, a touch rod elastically pressing the elastic diaphragm is arranged in the adjusting tube, the side wall of the adjusting tube is provided with a radial through hole, the control circuit board comprises a micro switch arranged at a position corresponding to the radial through hole, the touch rod comprises a start section, a pressure maintaining section and a touch surface, a touch ball is arranged in the radial through hole, the inner side of the touch ball is attached to the touch surface, the outer side of the touch ball is attached to a touch key of the micro switch, when the water pressure of the pressure cavity is less than or equal to a set starting pressure value, the touch rod pushes the elastic membrane to move to a starting position towards one side of the deformation groove, the touch ball is attached to a starting section of the touch surface at the moment, and the touch key of the micro switch is popped outwards; when the water pressure of pressure chamber is greater than the start pressure value of settlement, elastic diaphragm pushes the touch rod and moves to the start pressure position towards keeping away from deformation recess one side, and the pressure maintaining section of touching surface is leaned on to the touch ball this moment, touches the touch key that the micro-gap switch was pressed to the touch ball.

8. The electronic pressure controller convenient for adjustment according to claim 7, wherein the control box body is provided with a mounting through hole on a side wall of a bottom wall of the outer side of the pressure barrel body, the adjusting tube is internally threaded with an adjusting pin in an opening far away from the deformation groove, an adjusting pressure spring is arranged between the adjusting pin and the touch rod, an adjusting part extending out of the control box body is arranged at the end part of the adjusting pin, the adjusting part comprises a step-shaped outer sleeve, an adjusting knob connected at the small end of the outer sleeve and extending out of the control box body, the large end of the outer sleeve is sleeved at the end part of the adjusting tube, and one end of the adjusting pin far away from the adjusting pressure spring is splined in an inner hole.

9. The electronic pressure controller convenient for adjustment according to claim 8, wherein the control box body is provided with an adjustment through hole, the inner end of the adjustment knob is provided with at least two sets of positioning and clamping structures, the positioning and clamping structures comprise two positioning protrusions located in the adjustment through hole, and a buckle located between the two positioning protrusions and having a clamping hook at an end portion, a positioning clamping groove is formed between the two positioning protrusions, an axial positioning convex rib is arranged on an outer side wall of the small end of the outer sleeve, the positioning convex rib is partially clamped in the positioning clamping groove, and the clamping hook of the buckle hooks an inner side wall of the control box body.

Images