CN209083535U - Fluid pump controller - Google Patents

Abstract

The utility model relates to a kind of fluid pump controllers, including the casing assembly formed by the first shell, second housing and top cover, have runner in the first shell, one end of the first shell is equipped with water inlet connecting pin, and the other end of the first shell is equipped with water outlet connecting pin；The water inlet connecting pin of runner, which is equipped with, can incude its interior fluid flowing and the valve mechanism of the motor start and stop that control fluid pump, runner has pump housing pressure detecting mouth, first shell is equipped with the Fluid pressure detection sensor of hydraulic variation in induction runner and control panel whether controlling the electric motor starting of fluid pump, Fluid pressure detection sensor is connected to pump housing pressure detecting mouth and is formed by confined space after being located at the first shell and second housing fastening, to facilitate user that fluid pump controller is mounted directly in existing fluid pump, it avoids control panel and the generation of damaged condition occurs because meeting casing assembly leak, improve security performance when fluid pump controller uses.

Description

Fluid pump controller

Technical field

The utility model relates to fluid pump field more particularly to a kind of fluid pump controller, the fluid pump controller is special Suitable in water pump.

Background technique

Fluid pump is a kind of device that fluid is transported by the rotation of motor, and automatic fluid pump then refers to fluid by automatic The fluid pump of control.

Automatic control for realization to fluid pump, can generally install pressure switch at the fluid outlet passage of the pump housing, and At the fluid feed channel of the pump housing install check-valves, by pressure switch in the pump housing together with check-valves interoperation, play Automatically the effect stopped.Pressure switch be it is hydraulic for detecting the fluid in fluid outlet passage, in fluid outlet passage It is hydraulic be higher than setting value when, cut off the motor power of fluid pump, motor stalls；Hydraulic in fluid outlet passage is lower than When setting value, the power supply of fluid pump motor, electric motor starting rotation are connected.Such as under the small traffic conditions of fluid, once there is fluid Outflow, pump startup, but because the discharge of fluid is smaller, manifold pressure moment can be made to become larger, motor is shut down at once；With small stream The fluid of amount continues to flow out, and makes pump startup, and so circulation causes the frequent starting pumped, can damage to motor.

However, existing fluid pump still has some shortcomings: due to needing to install pressure in the pump housing of fluid pump Power switch and check-valves, to complete control to fluid pump, and it is very limited to pump intracorporal space, so install pressure switch and Check-valves will undoubtedly increase the structure complexity of fluid pump, the manufacture difficulty and manufacturing cost of larger fluid pump.

In addition, existing as Chinese invention patent CN201210321001.7 discloses a kind of water-aspirator pressure sensor (pressure Switch), including shell, flexible sheet, magnetic core, inductance coil, spring, inductance sleeve and regulating valve；Upper part of the housing is equipped with first Cavity, and lower part is then equipped with the first through hole being connected with the first cavity；Inductance lower cartridge is equipped with the second cavity, and top Then it is equipped with the second internal thread hole being connected with the second cavity；Flexible sheet is located at the first cavity bottom of shell；Inductance sleeve Lower part is inserted in the first cavity of shell, and flexible sheet is pushed down in lower end surface, which may also function as the effect of sealing, It can make the good seal performance between the inductance sleeve and the first cavity of shell, water will not leak out from there；Spring can be stretched Contracting ground is located in the second cavity of inductance sleeve；Inductance coil is fixed on the second cavity lower port inner wall of inductance sleeve, Lead-out wire is pierced by out of inductance sleeve the second cavity and is electrically connected with pressure detection circuit；Magnetic core is axially displaceably located at inductance In the inner cavity of coil, magnetic core lower end surface is in contact with flexible sheet, which is in contact with lower spring end；Under regulating valve End is equipped with the second external screw thread compatible with the second internal thread hole of inductance sleeve；Regulating valve lower end is screwed into the second of inductance sleeve In internal thread hole, which is in contact with spring upper end.

When work, water enters from the first through hole of shell lower end, and the pressure of water forces flexible sheet to generate toward magnetic core side To raised deformation, the deformation of the flexible sheet pushes magnetic core up to move and compressed spring, because magnetic core deviates inductance coil Displacement, magnetic linkage are reduced, and the inductance of inductance coil is caused also to reduce；The actual pressure that pressure detection circuit calculates water outlet accordingly is big It is small, to provide corresponding control signal output feed pump.That is, disclosed in patent of invention CN201210321001.7 Scheme is to deviate the displacement of inductance coil under flow action using magnetic core to obtain the inductance of inductance coil in the second cavity Situation of change, and then the actual pressure size of water is calculated according to this inductance situation of change by pressure detection circuit again.

However, water-aspirator pressure sensor plan disclosed in foregoing invention patent CN201210321001.7 still has not Foot place: due to needing inductance coil to be arranged in the second cavity of water-aspirator pressure sensor and by the lead-out wire of inductance coil It is pierced by out of inductance sleeve the second cavity and is electrically connected with pressure detection circuit, this will make adding for water-aspirator pressure sensor Work difficulty increases, and reduces the processing and manufacturing efficiency of sensor；In addition, due to needing by the shifting between inductance coil and magnetic core Position obtains the inductance situation of change in the second cavity, and after inductance is tested out, then goes to judge pressure, inductance ratio More sensitive, the coherence request of magnetic is problematic, and technique is bad does.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of fluid pump controller for the above-mentioned prior art, should Fluid pump controller not only facilitates user that the fluid pump controller is mounted directly in existing fluid pump, utilizes the fluid pump The control to fluid pump work can be completed in controller, but also can effectively promote security performance when its work.

Technical solution adopted by the utility model to solve the above technical problems is as follows: fluid pump controller, which is characterized in that Including the casing assembly formed by the first shell, second housing and top cover, there is runner in first shell, outside described first One end of shell is equipped with the water inlet connecting pin that connect to the water inlet end with fluid pump, the other end of the first shell equipped with to it is outer The water outlet connecting pin of water receiving pipe connection；

The water inlet connecting pin of the runner, which is equipped with, can incude its interior fluid flowing and the valve of the motor start and stop that control fluid pump Door；The runner has pump housing pressure detecting mouth；

First shell be equipped with induction runner in hydraulic variation Fluid pressure detection sensor and according in runner The control panel whether electric motor starting of the induction result control fluid pump of hydraulic variation；

The Fluid pressure detection sensor is arranged at the pump housing pressure detecting mouth and Fluid pressure detection sensing Device is formed by confined space after being located at the first shell and second housing fastening.

With improvement, in the fluid pump controller, sealing plate is installed on first shell, is had on sealing plate For the mounting hole that Fluid pressure detection sensor passes through, have between the pump housing pressure detecting mouth and sealing plate along the pump housing pressure The waterproof grommet of the setting of direction arround power detection mouth.

It improves again, in the fluid pump controller, first shell has the bottom cavity for placing control panel, institute It states after control panel is located at the first shell and top cover fastening and is formed by confined space.

Further, in the fluid pump controller, the Fluid pressure detection sensor include shell, capping, Flexible sheet, post rod parts and spring, the top of the shell are provided with cavity, and the lower end of shell is provided with passing through for connection cavity Through-hole, the through hole are connected by pump housing pressure detecting mouth with runner, and the capping is mutually fastened with shell and the envelope Lid covers the top opening of cavity, and the flexible sheet is fixed on the bottom of cavity and blocks being connected to for through hole and cavity, institute It states post rod parts to be axially displaceably located in capping, the spring acts on post rod parts and makes the lower part of post rod parts always It is kept in contact the trend of flexible sheet；

The Fluid pressure detection sensor further includes magnetic part and the magnetic field strength to connect the control panel Detection device, the magnetic part are located on post rod parts, the magnetic field strength detection device with magnetic part is mutually isolated sets It sets, the magnetic field strength detection device can induce the magnetic that magnetic part is generated close to or far from the magnetic field strength detection device Field variation.

Still further, the capping has the first chamber being individually formed and the second chamber positioned at the capping upper end Room, the post rod parts non-rotatingly and are axially displaceably located in the first chamber of capping；The magnetic part is located at top The end of rod unit, the magnetic field strength detection device is located in the second chamber of capping, and magnetic field strength detection device is fixed The side of locating displacement space when magnetic part axially moves.

With improvement, the fluid pump controller further includes the briquetting with inner cavity, the briquetting be located at the lower end of capping and Flexible sheet is pushed down, the movement being axially moveable for post rod parts is collectively formed with the inner cavity by the first chamber and briquetting that cover Space.

Further, in the fluid pump controller, leading of being connected with first chamber is formed in the capping To chamber, the directed cavity forms displacement space when magnetic part axially moves, and the directed cavity is in that can limit mandril Component rotates flat；The post rod parts have integrally formed base portion, rod body part and guide part；The guide part with Directed cavity matches just, so that the guide part occurs freely to move axially in directed cavity.

Specifically, in the fluid pump controller, the flexible sheet is in the cup-like structure of middle part indent, the bullet The female parts of property diaphragm are located at the lower section of the bottom of post rod parts；Alternatively, the flexible sheet is fixed on by position limiting structure The bottom of cavity.

Again with improvement, in the fluid pump controller, the valve mechanism includes being set in runner and having spring part The check-valves for remaining turned-off the water inlet connecting pin trend of runner is held on top, and check-valves is equipped with magnet, is equipped in the first shell and magnetic Iron cooperation to control tongue tube whether electric motor starting, check-valves be in close water inlet connecting pin in the state of, it is described Magnet does not incude tongue tube, and tongue tube does not control motor work；It is moved in check-valves along the flow direction of fluid and opens water inlet In the state of connecting pin, the magnet incudes tongue tube, and tongue tube control motor is in starting state always.

Compared with the prior art, the advantages of the present invention are as follows:

Firstly, fluid pump controller in the utility model cross all by the first shell of casing assembly, second housing and Third shell is arranged to mutually dismantle the structure of assembling, facilitates each component in replacement intelligent controller, especially keeps away Control panel is exempted from and the generation of damaged condition has occurred because meeting casing assembly leak, has improved when entire fluid pump controller uses Security performance；

Secondly, the fluid pump controller in the utility model has the first shell of runner by setting, and in runner Water inlet connecting pin, which is arranged valve mechanism and penetrates through at the pump housing pressure detecting mouth of runner, is connected with Fluid pressure detection sensor, To facilitate user that the fluid pump controller is mounted directly in existing fluid pump, the fluid pump controller is utilized The control to fluid pump work is completed, the structure of fluid pump is simplified, is operated more convenient；

User only needs the fluid pump controller by one to be respectively installed in different fluid pumps, it will be able to complete to more The job control of the existing fluid pump of number, realizes the control effect of " one-to-many ", greatly reduces the repacking for existing fluid pump Cost；

In addition, the fluid pump controller in the utility model at the pump housing pressure detecting mouth of fluid outlet passage by setting The Fluid pressure detection sensor for improving structure is set, which includes shell, capping, flexible sheet, top Rod unit and spring, flexible sheet is fixed on the cavity bottom of shell and post rod parts is axially displaceably arranged in cover Interior, the end of post rod parts is fixed with magnetic part, and setting can induce magnetic part with post rod parts in capping Axial movement and the magnetic field strength detection device of changes of magnetic field generated, magnetic field strength detection device is by the change of magnetic field strength feelings The control panel that condition is sent to fluid pump controller processes, strong according to the magnetic field in Fluid pressure detection sensor by the control panel The prevailing fluid pressure value in Fluid pressure detection sensor is accurately calculated in degree situation of change, that is, pumps intracorporal fluid pressure The change in fluid pressure situation in fluid pump not only can be more accurately detected in power, to guarantee to fluid pressure in the pump housing The automatic control of fluid pump controller convection current body pump work is realized in the accurate detection of power；

Again, Fluid pressure detection sensor employed in the utility model had not both needed the inside cavity in its shell Inductance coil is set, does not also need to draw inductance coil to the external of shell, it is possible thereby to be effectively reduced Fluid pressure detection The processing and manufacturing difficulty of sensor, improve processing and manufacturing efficiency, while the structure of Fluid pressure detection sensor accomplished electricity every From the safety that ensure that fluid detection；The components of Fluid pressure detection sensor used by the fluid pump controller are few, Structure is simple, at low cost and high reliablity；

Finally, the utility model is mainly the pressure for utilizing fluid pressure to generate the bottom surface of flexible sheet, which exists In transmittance process, some can be reached under the balance of spring force and fixes position；Due to the end of post rod parts be fixed with it is removable Magnetic part, magnetic part can generate magnetic field in the cavity；By using magnetic field strength detection device come intracorporal to chamber Magnetic field strength measures, and relevant displacement is calculated by control panel, which assesses current shape by control panel State simultaneously calculates current fluid pressure value, to reach the accurate detection for Fluid pressure.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of fluid pump controller in the utility model embodiment；

Fig. 2 is that fluid pump controller shown in Fig. 1 removes the schematic diagram after second shell；

Fig. 3 is the schematic diagram after removing sealing plate from structure shown in Fig. 2；

Fig. 4 is the cross-sectional view of structure shown in Fig. 2；

Fig. 5 is the decomposition diagram of Fluid pressure detection sensor in the present embodiment；

Fig. 6 is the cross-sectional view of Fluid pressure detection sensor in the present embodiment；

Fig. 7 is the structural schematic diagram of first shell；

Fig. 8 is the structural schematic diagram of second shell.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

As shown in FIG. 1 to FIG. 8, fluid pump controller in the present embodiment, including by the first shell 1, second housing 2 and top The casing assembly that lid 3 is formed, the first shell 1 is interior with runner 4, and one end of the first shell 1 is equipped with to the water inlet with fluid pump The water inlet connecting pin 5 of connection is held, the other end of the first shell 1 is equipped with the water outlet connecting pin 6 to connect with external water pipe；Water inlet Connecting pin 5 to the straight through tube region between water outlet connecting pin 6 is the runner 4 formed for liquid flowing, the stream in the embodiment Body is water；The water inlet connecting pin 5 of runner 4, which is equipped with, can incude its interior fluid flowing and the valve knot of the motor start and stop that control fluid pump Structure 7；Runner 4 has pump housing pressure detecting mouth 8；The Fluid pressure that first shell 1 is equipped with hydraulic variation in induction runner, which detects, to be passed Sensor 9 and according to the induction result of variation hydraulic in runner control fluid pump electric motor starting whether control panel 10；Fluid Press detection sensor 9 is arranged at pump housing pressure detecting mouth 8 and the Fluid pressure detection sensor 9 is located at 1 He of the first shell Second housing 2 is formed by confined space after fastening.

In order to which Fluid pressure detection sensor 9 to be installed at pump housing pressure detecting mouth 8, and ensure the fluid in runner Will not be flowed out from fastening place of the first shell and second housing, avoid damage the first shell 1 control panel, the first of the present embodiment Sealing plate 11 is installed on shell 1, there is the mounting hole 12 passed through for Fluid pressure detection sensor, pump housing pressure on sealing plate 11 Waterproof grommet 13 with the setting of the direction arround the pump housing pressure detecting mouth between power detection mouth 8 and sealing plate 11.Separately Outside, first shell 1 of the present embodiment also has a bottom cavity 14 for placing control panel 10, control panel 10 be located at the first shell 1 with Top cover 3 is formed by confined space after fastening.

Specifically, the Fluid pressure detection sensor 9 in the present embodiment includes shell 15, capping 16, flexible sheet 17, top Rod unit 18 and spring 19, the top of shell 15 are provided with cavity 20, and the lower end of shell 15 is provided with the perforation of connection cavity 20 Hole 21, through hole 21 are connected by pump housing pressure detecting mouth 8 with runner 4, capping 16 and the mutually fastening of shell 15 and capping 16 The top opening of cavity 20 is covered, flexible sheet 17 is fixed on the bottom of cavity and blocks being connected to for through hole 21 and cavity 20, Post rod parts 18 are axially displaceably located in capping 16, and spring 19 acts on post rod parts 18 and the lower part of post rod parts is made to begin It is kept in contact the trend of flexible sheet eventually；

Moreover, the Fluid pressure detection sensor 9 in the present embodiment further includes magnetic part 22 and to connect The magnetic field strength detection device 23 of control panel 10, magnetic part 22 are located on post rod parts 18, magnetic field strength detection device 23 with The mutually isolated setting of magnetic part 22, magnetic field strength detection device 23 can induce magnetic part close to or far from the magnetic field strength Detection device and the changes of magnetic field generated.

As needed, the magnetic field strength detection device 23 in the embodiment uses linear hall sensor.Wherein, referring to figure Shown in 4, valve mechanism 7 includes being set in runner 4 and having the top of spring part 31 to hold the water inlet connecting pin trend for remaining turned-off runner Check-valves 32, check-valves 32 are equipped with magnet 33, be equipped in the first shell 1 with magnet 33 cooperate to control electric motor starting and No tongue tube, in the state that check-valves 32 is in and closes water inlet connecting pin 5, magnet 33 does not incude tongue tube, and tongue tube is not Control motor work；In the state that check-valves is moved along the flow direction of fluid and opens water inlet connecting pin, the magnet 33 sense Tongue tube is answered, tongue tube control motor is in starting state always.

Specifically, the capping 16 in the present embodiment has the first chamber 24 being individually formed and positioned at the capping upper end Second chamber 25, post rod parts 18 non-rotatingly and are axially displaceably located in the first chamber 24 of capping；Magnetic part 22 Positioned at the end of post rod parts 18, magnetic field strength detection device 23 is located in the second chamber 25 of capping, and magnetic field strength detects Device 23 is fixed on the side of locating displacement space when magnetic part 22 axially moves, thus come detect magnetic part 22 with The axial movement of post rod parts 18 and the changes of magnetic field generated.

Magnetic part 22 in the present embodiment is embedded in the end of post rod parts 18.For example, it is directed to magnetic part 22, it can An accommodating cavity is arranged in the end of post rod parts 18, then magnetic part 22 is fixed in the accommodating cavity；So set, User can also be facilitated to do replacement operation to the magnetic part in the accommodating cavity on post rod parts 18 as needed.

It is substantially parallel between direction when magnetic part 22 axially moves and the axial line of second chamber 25, it therefore ensures that The side of magnetic field strength detection device 23 in the second chamber 25 locating displacement space when axially moving positioned at magnetic part. It should be noted that the top of magnetic part 22, the i.e. magnetic cannot be arranged in the magnetic field strength detection device 23 in the present embodiment The side of magnetic part 22 can only be arranged in field intensity detection device 23.

The Fluid pressure detection sensor is installed on water pump for convenience, to measure the hydraulic pressure value in water pump, may be used also It is adapted and one end is fastened on extension 34 in shell 15, is extended with pump housing pressure detecting mouth with enabling the lower end of shell 15 have Portion 34, which is located on the periphery of through hole 21 and extension 34, has external screw thread.The extension 34 is fastened on the pump housing by its external screw thread At pressure detecting mouth 8, to realize the purpose being installed to the Fluid pressure detection sensor on water pump.Specifically, extend It can have external screw thread on the outer wall in portion 34, there is internal screw thread on the inner wall of pump housing pressure detecting mouth 8, so that extension is outer Screw thread can be adapted with the internal screw thread of pump housing pressure detecting mouth, reach and Fluid pressure detection sensor is facilitated to install on water pump With the effect of disassembly.

In addition, the Fluid pressure detection sensor 9 can also include the briquetting 26 with inner cavity, briquetting 26 is located at capping 16 Lower end and push down flexible sheet 17, to be collectively formed by the inner cavity of the first chamber 24 covered and briquetting 26 for post rod parts edge The mobile space of axial movement.

In order to enable post rod parts can more steadily axially move in capping, it in the present embodiment, can be with The directed cavity 27 being connected with first chamber 24 is formed in capping 16, directed cavity 27 forms magnetic part 22 and axially moves When the displacement space, directed cavity 27 be in can limit post rod parts rotation it is flat.It is flat by the way that directed cavity 27 to be arranged to It is flat-shaped, post rod parts can be effectively avoided and rotate when being axially moveable, and then improve magnetic part in moving process In produced magnetic field strength it is regularly changing, then realize magnetic field strength detection device to cover in magnetic field strength accurate inspection It surveys.

Wherein, the post rod parts 18 in the present embodiment have integrally formed base portion 28, rod body part 29 and guide part 30； Guide part 30 matches just with directed cavity 27, so that the guide part 30 occurs freely to move axially in directed cavity 27, thus It may further ensure that stability of the post rod parts 18 when axially moving, it is ensured that the stabilization of 22 moving direction of magnetic part. The rod body part 29 and guide part 30 of post rod parts 18 are respectively positioned in the inner cavity of spring 19, so that post rod parts 18 can be with To apply the pressure of variation to spring 19 into the water flow in first chamber 24.

Flexible sheet 17 in the present embodiment is in the cup-like structure of middle part indent, and the female parts of the flexible sheet 17 are located at The lower section of the bottom of post rod parts 18；Alternatively, flexible sheet 17 is fixed on the bottom of cavity 20 by position limiting structure.Specifically, In the Fluid pressure detection sensor of the present embodiment, flexible sheet 17 is pushed down by the lower end surface of capping 16, so that elastic Diaphragm is firmly secured at the bottom of cavity 20.In addition, the flexible sheet 17 in the present embodiment can be fixed using position limiting structure In the bottom of the cavity 20.For example, groove 35 is arranged in the bottom of cavity 20, accordingly, flexible sheet 17 has adaptation limit should Groove 35 simultaneously enters the lug boss 36 in groove 35.Certainly, the groove 35 on cavity bottom preferably uses ring-shaped groove, elasticity Lug boss 36 on diaphragm 17 is also accordingly ring-shaped protrusion, and it is steady when cavity bottom is fixed to thereby enhance flexible sheet Determine effect.Flexible sheet 17 in the embodiment selects the diaphragm of rubber mass.

In order to facilitate the actual needs of wiring, it is also possible that the second chamber 25 in the present embodiment is substantially in inverted L Type, the i.e. second chamber 25 include transverse chambers 251 and the longitudinal chamber being connected to the transverse chambers 251, magnetic field strength detection device 23 are located in longitudinal chamber, thus, it is possible to which the conducting wire that wiring needs is placed into transverse chambers 251.

Fluid pump controller in the present embodiment has the first shell 1 of runner by setting, and connects in the water inlet of runner It connects 5 setting valve mechanism of end and is penetrated through at the pump housing pressure detecting mouth of runner and be connected with Fluid pressure detection sensor, thus Facilitate user that the fluid pump controller is mounted directly in existing fluid pump, can be completed using the fluid pump controller Control to fluid pump work simplifies the structure of fluid pump, operates more convenient；User only needs the fluid pump control Device processed is respectively installed in different fluid pumps, it will be able to be completed the job control to most existing fluid pumps, be realized " a pair of It is more " control effect, i.e. control of the fluid intelligent controller to multiple existing fluid pumps, and then greatly reduce for existing There is the repacking cost of fluid pump.Moreover, the present embodiment is also by setting the first shell 1, second housing 2 and third shell 3 It is set to the structure that can mutually dismantle assembling, each component replaced in the intelligent controller is facilitated, particular avoids controlling There is the generation of damaged condition because meeting shell leak in plate, improves security performance when entire fluid pump controller uses.

It explains below to the working principle of fluid pump controller in the present embodiment:

After the fluid pump controller is installed in fluid pump, the fluid pump controller is entered when pumping intracorporal fluid Fluid outlet passage when, Fluid pressure detection sensor can under the action of by Fluid pressure, by magnetic field strength detect fill It sets and the change of magnetic field strength situation of acquired magnetic part is sent to control panel, once control panel judgement pump is intracorporal current When Fluid pressure is higher than setting value, the motor power of fluid pump, motor stalls are cut off in control panel order；Once control panel is sentenced When the disconnected intracorporal prevailing fluid pressure of pump is lower than setting value, even if there is the water flow of small flow to flow in the pump housing, control panel order Connect the power supply of fluid pump motor, electric motor starting rotation.

It is described as follows for the working principle of Fluid pressure detection sensor in the present embodiment:

Using the Fluid pressure detection sensor structure in the present embodiment, flexible sheet can be made by through through hole When the water impact of entrance, the middle part female parts of the flexible sheet can be heaved towards the base portion direction of post rod parts, be heaved Flexible sheet push the post rod parts done in the mobile space of capping it is axial move up movement, further such that magnetic part 22 Generated magnetic field strength generates variation because of the axial movement of magnetic part in the mobile space of capping；

Certainly, when the water flow entered through through hole reduces, water flow suffered by the middle part female parts of flexible sheet is rushed Hitting power can reduce, magnetic part 22 also with post rod parts towards moving under the axial movement in flexible sheet direction, thus Magnetic part generated magnetic field strength in the mobile space of capping is again led to generate because of the axial movement of magnetic part Variation；Magnetic part 22 is in the mobile space of capping as change of magnetic field strength situation caused by water flow size is by being located at the Detected by magnetic field strength detection device 23 in two chambers 25, and the stream is sent to via the magnetic field strength detection device 23 The control panel of body pump intelligence sensor processes, the mobile sky of capping is calculated according to the variation of magnetic field strength by control panel Between hydraulic pressure value, i.e. current hydraulic pressure value in Fluid pressure detection sensor；When the current hydraulic pressure value of control panel judgement gained is higher than When preset value, control panel just orders the motor power of cutting fluid pump, so that motor stalls；When control panel judges institute When obtaining current hydraulic pressure value lower than preset value, control panel order connects the motor power of fluid pump, so that electric motor starting rotates.Its In, the magnetic field strength detection device 23 of Fluid pressure detection sensor is wired to control panel 10 in the present embodiment.Tool Body, by the way that wire connection hole 100 is arranged on the first shell 1, then utilize the conducting wire across the wire connection hole 100 magnetic Field intensity detection device 23 is connected together with the control panel 10 in bottom cavity 14.

Specifically, fluid pressure is calculated by following formula in the control panel of fluid pump intelligence sensor in the present embodiment Power: V_OUT=KX；Wherein, V_OUT indicates the intracorporal fluid pressure value of chamber, and K indicates the coefficient of elasticity of cavity inner spring, and X is indicated The displacement of cavity inner spring.

For the Fluid pressure detection sensor in the present embodiment, shell 15 is adopted a split structure with capping 16.Specifically Ground can be provided in capping 16 and mutually fit with the first internal screw thread by the way that the first internal screw thread is arranged in the cavity 20 of shell 15 Capping is fixed in the cavity of shell, so that shell and envelope by the first external screw thread matched to realize by screw thread engagement Lid tightens together；It is of course also possible to be provided with the second external screw thread in the outside of shell 15, be provided in capping 16 with second outside Compatible second internal screw thread of screw thread, the shell 15 are engaged by screw thread with capping 16 and are fixed.

It should be noted that the Fluid pressure detection sensor in the present embodiment is felt using magnetic field strength detection device 23 Magnetropism component 22 generated change of magnetic field strength situation, the Fluid pressure detection sensor in the mobile space of capping 16 It does not need that inductance coil is arranged inside it, does not need more to draw inductance coil to the external of shell；Certainly, due to not needing Inductance coil is set in the cavity of Fluid pressure detection sensor, and this reduces the processing systems of Fluid pressure detection sensor Difficulty is made, processing and manufacturing efficiency is improved.

In addition, due to the end that magnetic part 22 has been arranged in post rod parts 18, and by magnetic field strength detection device 23 be arranged in capping second chamber in and the magnetic field strength detection device be fixed on it is locating when magnetic part axially moves The side of displacement space, so as to effectively save the space of Fluid pressure detection sensor in the axial direction.

Certainly, the Fluid pressure detection sensor in the embodiment can be not only used for the detection of water flow pressure, can be with Pressure detecting for fluid oil and other fluids.

Claims (9)

1. fluid pump controller, which is characterized in that outer including being formed by the first shell (1), second housing (2) and top cover (3) Shell component has runner (4) in first shell (1), one end of first shell (1) be equipped with to fluid pump into The water inlet connecting pin (5) of water end (W.E.) connection, the other end of the first shell (1) are equipped with the water outlet connecting pin to connect with external water pipe (6)；

Water inlet connecting pin (5) be equipped with can incude fluid in runner flow and the valve mechanism of the motor start and stop that control fluid pump (7)；The runner (4) has pump housing pressure detecting mouth (8)；

First shell (1) be equipped with induction runner in hydraulic variation Fluid pressure detection sensor (9) and according to runner Control panel (10) whether the electric motor starting of the induction result control fluid pump of interior hydraulic variation；

The Fluid pressure detection sensor (9) is arranged at the pump housing pressure detecting mouth (8) and Fluid pressure detection passes Sensor (9) is formed by confined space after being located at the first shell (1) and second housing (2) fastening.

2. fluid pump controller according to claim 1, which is characterized in that be equipped with sealing on first shell (1) Plate (11) has the mounting hole (12) passed through for Fluid pressure detection sensor, the pump housing pressure detecting on sealing plate (11) Waterproof grommet (13) with the setting of the direction arround the pump housing pressure detecting mouth between mouth (8) and sealing plate (11).

3. fluid pump controller according to claim 1, which is characterized in that first shell (1), which has, places control The bottom cavity (14) of plate (10), the control panel (10) be located at the first shell (1) and top cover (3) fastening after be formed by it is closed In space.

4. fluid pump controller according to claim 1, which is characterized in that Fluid pressure detection sensor (9) packet Shell (15), capping (16), flexible sheet (17), post rod parts (18) and spring (19), the top of the shell (15) is included to set It is equipped with cavity (20), the lower end of shell (15) is provided with the through hole (21) of connection cavity (20), and the through hole (21) passes through Pump housing pressure detecting mouth (8) is connected with runner (4), the capping (16) and shell (15) mutually fastening and described capping (16) Cover cavity (20) top opening, the flexible sheet (17) be fixed on the bottom of cavity (20) and block through hole (21) and The connection of cavity (20), the post rod parts (18) are axially displaceably located in capping (16), and the spring (19) acts on Post rod parts (18) simultaneously make the lower part of post rod parts remain the trend of contact resilient diaphragm；

The Fluid pressure detection sensor (9) further includes magnetic part (22) and the magnetic to connect the control panel (10) Field intensity detection device (23), the magnetic part (22) are located on post rod parts (18), the magnetic field strength detection device (23) with magnetic part (22) mutually isolated setting, the magnetic field strength detection device (23) can induce magnetic part it is close or The changes of magnetic field generated far from the magnetic field strength detection device.

5. fluid pump controller according to claim 4, which is characterized in that the capping (16) has the be individually formed One chamber (24) and second chamber (25) positioned at the capping upper end, the post rod parts (18) can move non-rotatingly and axially It is located in the first chamber (24) of capping dynamicly；The magnetic part (22) is located at the end of post rod parts (18), the magnetic field Intensity detecting device (23) is located in the second chamber (25) of capping, and magnetic field strength detection device (23) is fixed on magnetic part (22) side of locating displacement space when axially moving.

6. fluid pump controller according to claim 5, which is characterized in that further include the briquetting (26) with inner cavity, institute It states briquetting (26) to be located at the lower end of capping (16) and push down flexible sheet (17), by the first chamber covered (24) and briquetting (26) mobile space being axially moveable for post rod parts is collectively formed in inner cavity.

7. fluid pump controller according to claim 6, which is characterized in that be formed with and the first chamber in the capping (16) The directed cavity (27) that room (24) is connected, the displacement that the directed cavity (27) is formed when magnetic part axially moves are empty Between, the directed cavity (27) be in can limit post rod parts rotation it is flat；The post rod parts (18) have integrally formed Base portion (28), rod body part (29) and guide part (30)；The guide part (30) matches just with directed cavity (27), so that this is led Free axial movement occurs in directed cavity (27) to portion (30).

8. according to the described in any item fluid pump controllers of claim 4~7, which is characterized in that the flexible sheet (17) is in The cup-like structure of middle part indent, the female parts of the flexible sheet (17) are located at the lower section of the bottom of post rod parts (18)；Or Person, the flexible sheet (17) are fixed on the bottom of cavity (20) by position limiting structure.

9. fluid pump controller according to claim 1, which is characterized in that the valve mechanism (7) includes being set to runner (4) in and spring part (31) top holds the check-valves (32) for remaining turned-off the water inlet connecting pin trend of runner, on check-valves (32) Be equipped with equipped with magnet (33), in the first shell (1) with magnet (33) cooperate to control tongue tube whether electric motor starting, Check-valves (32), which is in, closes in the state of water inlet connecting pin (5), and the magnet (33) does not incude tongue tube, and tongue tube does not control Motor work；In the state that check-valves is moved along the flow direction of fluid and opens water inlet connecting pin (5), the magnet (33) Incude tongue tube, tongue tube control motor is in starting state always.