CN104847960A - Photoelectric liquid sensor and water pump with same - Google Patents
Photoelectric liquid sensor and water pump with same Download PDFInfo
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- CN104847960A CN104847960A CN201510291102.8A CN201510291102A CN104847960A CN 104847960 A CN104847960 A CN 104847960A CN 201510291102 A CN201510291102 A CN 201510291102A CN 104847960 A CN104847960 A CN 104847960A
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- Prior art keywords
- optical fiber
- valve
- light
- receive
- fixed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
- F04B53/1022—Disc valves having means for guiding the closure member axially
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/104—Flap valves the closure member being a rigid element oscillating around a fixed point
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a photoelectric liquid sensor. The photoelectric liquid sensor is characterized by comprising a transmitting optical fiber and a receiving optical fiber which are bilaterally oppositely arranged at an interval, the outer end of the transmitting optical fiber and the outer end of the receiving optical fiber are led out of a fluid, a light-emitting diode used for lighting the transmitting optical fiber is arranged at the position, adjacent to the transmitting optical fiber, out of the fluid, the receiving optical fiber is capable of receiving the light transmitted by the transmitting optical fiber and transmitting the light to a photoelectric conversion module, a shielding piece capable of moving under the action of the fluid is arranged between the transmitting optical fiber and the receiving optical fiber, and whether the receiving optical fiber can receive the light transmitted from the transmitting optical fiber or not is determined by vertical motion of the shielding piece. The diameter of the transmitted light is quite small due to the features of the light transmitted by the fiber, the light can be sensed if only the shielding piece slightly moves by a distance, and sensitivity is quite high. Compared with a traditional magnetic water flow sensor, the photoelectric liquid sensor has the advantages of freeness from affection of external magnetic field, operation is stable, the fiber is less prone to damage, and the part easy to be damaged is the light-emitting diode which is quite convenient to maintain. The invention further relates to a water pump provided with the above sensor.
Description
Technical field
The present invention relates to a kind of photoelectric current body sensor, and there is the water pump of this sensor.
Background technique
Water switch is the one of fluid switch, for water flow sensing unit, it is a kind of sensing means current being converted to switch type electrical signal after reaching certain flow, can be used for the water circulation control of electric water heater, solar water heater, air conditioner and other water systems, water inlet and outlet control, water computer heating control, pump switch control, solenoid valve break-make controls or the process such as water outlet power-off, water outlet energising control.Whether the amount (flow, namely flow of fluid pressure) whether flowed in order to liquid in signal piping and flow reaches requirement, exports the state of the break-make of (providing) signal by switch electric contact simultaneously.Device systems have no signal by detection or control electric current from then on switch by (the switching state of water switch electric contact), judge the working condition of pipe-line system, provide corresponding control or the method for operation or measure; Following monitoring function can be realized: media flow, reduce/improve flow velocity; Medium in the presence/absence of; Media flow/static; Monitoring fluids within pipes flow velocity size, cutout are monitored or prevent the idle running of pump.
Its main structure of water switch in water switch cavity, is provided with one with the magnet of water (flow) direction motion, to arrange the dry reed-pipe that can be triggered by magnet outside water switch cavity.Flow through water switch entrance at current, promote magnet movement, magnet triggers dry reed-pipe action, and dry reed-pipe sends signal, whether controls electric motor starting.
There is following defect in existing water switch: 1, the action of magnet needs certain stroke and time, therefore sensitive not; 2, the magnetic field in the external world can not work under the environment having magnetic field, because can cause the misoperation of water switch; 3, need larger initial kinetic energy could promote magnet to move, as this water switch is used in water pump, in the working procedure of water pump small water flow, water switch akinesia; 4, dry reed-pipe is fragile, and water switch entirety is positioned at pump case in addition, its damage after not easily maintain and replace; 5, there iing the water environment of impurity to apply, easily blocked by impurity in the passage of magnet slippage, adsorbing and stuck; 6, electrical properties insulation is poor, and Security cannot ensure.In sum, traditional water switch can make further improvements.
Safety check refers to and relies on medium flowing itself and automatic open and close flap, is used for the valve preventing medium from flowing backwards, also known as check valve, one-way valve, reflux valve and back pressure valve.Safety check belongs to a kind of automatic valve, and its Main Function prevents medium from flowing backwards, prevents pump and drive motor reversion, and the releasing of vessel media.
The safety check used in existing water pump, generally be arranged in water intake, its structure comprises the valve seat having valve port, be located in the valve rod of the also upper and lower slippage of energy on valve seat, one end of valve rod is connected with the valve block in order to shutoff valve port, valve block is positioned at the below of valve seat, valve rod is also arranged with and makes valve rod keep moving to make valve block block the spring of valve port trend.When having current normal through water intake, the impulse force meeting ejection valve block of current, valve block and valve rod can overcome the elastic force of spring, towards the direction slippage of opening valve port, now valve port is opened, current enter in the pump housing by valve port, finally flow out, when motor no longer works from the outlet of the pump housing, current no longer flow into from water intake, valve rod can under the action of the spring, and band moving valve plate blocks valve port direction and moves, and prevents current from flowing backwards.
It only has an one-way cock structure with this safety check, water pump operationally, because of under a lot of environment, water pump draws up the water come, it is with a lot of impurity, if having impurity buildups in the keying position of valve, whole one-way cock will be caused to fit badly, at this moment whole one-way cock does not just have closing function, and the water in the pump housing can flow backwards from check-valve port and damage impeller and motor.And the diversion in the pump housing can be run off, do not have diversion in the self-priming pump pump housing, self-priming pump can lose self-absorption function.Water pump can not normally use.Safety check is when valve port is opened in addition, and be complete opening state, valve port place does not block, and operationally, some harder impurity, as finger stone can enter the impeller that can collide motor in pump case with current via safety check, serious meeting makes impeller failure to water pump.
Summary of the invention
Technical problem to be solved by this invention be provide for above-mentioned prior art present situation that a kind of sensitivity is higher, Security good, structure is simple, low price and non-damageable photoelectricity water flow sensing unit.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of photoelectric current body sensor, it is characterized in that: comprise the transmission optical fiber of left and right relative spacing setting and receive optical fiber, the outer end sending optical fiber and reception optical fiber all guides to outside fluid, and be provided with to illuminate the light emitting diode sending optical fiber in the contiguous fiber position place that sends outward at fluid, reception optical fiber can receive the light sending optical fiber transmission, and also will receive light is sent to photoelectric conversion module, send optical fiber and receive between optical fiber and be provided with mobile block piece under fluid matasomatism, moving up and down decision and whether block at transmission optical fiber and receive between optical fiber by block piece, whether final decision receives optical fiber can receive the light transmitted from generation optical fiber.
Moving up and down decision and whether block at transmission optical fiber and receive between optical fiber by block piece, whether final decision receives optical fiber can receive the light transmitted from generation optical fiber, and block piece can be able to move under fluid matasomatism, because optical fiber transmits the characteristic of light, its light diameter transmitted is very little, as long as therefore mobile a little some distance of block piece just can be sensed, sensitivity is quite high, compared with traditional magnet-type water flow sensing unit, it does not affect by external magnetic field, working stability, and optical fiber is not fragile, its fragile parts are light emitting diode, and the maintain and replace of light emitting diode is quite convenient.In water, apply the feature of monitoring current according to fluid sensor, optical fiber is led water body outside and is connected luminous body by this sensor.Because directly light luminescence in water receives with optical fiber again, and send optical fiber lead-in light again by the reception of reception optical fiber, in water, application is very distinguishing, and Security and the temperature tolerance of this programme are better.
Whether one end of above-mentioned block piece is hinged, realize blocking at transmission optical fiber and receive between optical fiber by the deflection of block piece under flow action.Because one end of block piece is hinged, make block piece form the lever construction of an enlarging course, by the enlarging course of lever, ensure that small water flow is maximum by block piece displacement amount.
Second technical problem to be solved by this invention is to provide a kind of water pump with aforementioned Photon-Electron fluid sensor and reasonable in design, this water pump can under small water flow state sensed control pump working, working sensitivity is high, not fragile, do not affect by external magnetic field, working stability and advantage easy to maintenance.What is more important, is drawn out in controller by optical fiber from water, there is not the problems such as the insulation difference of any electrical properties, substantially increases Security.
There is a water pump for aforementioned Photon-Electron water flow sensing unit, comprise the pump housing with water intake and water outlet, in water intake, be provided with the valve seat with intake tunnel, in the intake tunnel of valve seat, be provided with the first check valve assembly only allowed in the flow direction pump housing; It is characterized in that: described first check valve assembly comprises is located at the inner valve gap that also can overturn of valve seat, and valve gap coordinates with the upper end open of the intake tunnel of valve seat, and valve gap relies on deadweight or torsion spring to keep pressing down the upper end open trend of covering intake tunnel; The opening end sidewall of described valve gap has the convex baffle plate in side, sends optical fiber and receive optical fiber to introduce in the pump housing and to be positioned at the baffle plate left and right sides; Under the state that valve gap is closed, baffle plate blocks the conducting sending optical fiber and receive between optical fiber, the light transmitted from transmission optical fiber can not be received to make reception optical fiber, under valve gap opening state, described baffle plate opens the conducting sending optical fiber and receive between optical fiber, can receive to make reception optical fiber the light transmitted from transmission optical fiber.
The inner sidewall of above-mentioned valve seat is provided with two spaced walls, described baffle plate stretches between two walls, the light output end sending optical fiber is located on one of them wall, the light receiver end receiving optical fiber is located on another wall, and the light input end sending optical fiber and the light output end receiving optical fiber pass the rear extraction pump housing from the perforation the pump housing.
More than introduce and specifically arrange structure for sending optical fiber and receiving optical fiber after pump case, wall provides suitable installation position to the optical fiber introduced, and is convenient to the assembling location of optical fiber.
Be equipped with in perforation on the above-mentioned pump housing and be fixed with a plug, the periphery of plug is arranged with the seal ring coordinated with aperture seal, and the light input end of described transmission optical fiber and the light output end of reception optical fiber draw the pump housing through after plug.Plug passes the pump housing to optical fiber guiding function, and leaking of preventing from passing that the pump housing causes because of optical fiber, combine closely between optical fiber and plug.
As improvement, be provided with sealing case in the above-mentioned pump housing, the transmission optical fiber and the reception optical fiber that are positioned at the pump housing are hidden in sealing box, and finally pass from one end of sealing case.Optical fiber is hidden in the inner by sealing case, prevents optical fiber to be subjected to displacement by water impact, also guarantees that optical fiber can not by aqueous corrosion, the working life of extended fiber.
Above-mentioned sealing case is made up of end box and upper cover, what detachable upper cover unloaded is fixed on end box, the two ends of end box are fixed with the wall of two on valve seat respectively and are positioned at the outside of wall, there is in the end box first passage for sending fiber containment, and for receiving the second channel of fiber containment, first passage and second channel converge in one end.End box and wall fixed and is positioned at outside wall, can not be formed the unlatching of valve gap while effectively guaranteeing hermetic fiber and interfere.
On above-mentioned valve seat, the exterior edge face of two walls is respectively equipped with for transmission optical fiber and the groove receiving optical fiber embedding, and is fixed with clamping plate in the exterior edge face of described two walls by screw, and transmission optical fiber and reception fiber gripper are fixed in corresponding groove by these clamping plate.Its structure be fixed on by optical fiber on wall being another kind of structural type, this fixed structure is simply easy to assembly.
The connection side of above-mentioned valve gap has and flexibly connects sheet, and this flexibly connects sheet and is fixed on valve seat.What flexibly connect sheet is arranged so that valve gap can be unlocked, and flexibly connect sheet itself and have certain elastic-restoring force, it is the linkage structure of a kind of valve gap and valve seat, certainly being also rotationally connected of bearing pin can be adopted, just adopt being rotationally connected of bearing pin, its bearing pin portion is easily blocked by impurity, causes unlatching to have some setbacks and maybe can not open.
As improvement, the second check valve assembly only allowed in the flow direction pump housing is also provided with in the intake tunnel of above-mentioned valve seat, second check valve assembly comprises the pedestal with valve port, pedestal is fixed on the external port place of intake tunnel, the outer end of intake tunnel is communicated with the external world by valve port, valve port is equipped with the valve rod of the upper and lower slippage of energy, the end being positioned at the valve rod above pedestal is connected with the valve block assembly in order to shutoff valve port, is positioned at the valve rod below pedestal is arranged with to make valve rod keep moving down to make valve block assembly block the spring of valve port trend.The two groups of check valve assemblies arranged step by step are from inside to outside provided with in the intake tunnel of valve seat, and each group check valve assembly all only allows current to flow in the pump housing, therefore when one of them check valve assembly is put by impurity, other check valve assembly also plays a role, the possibility of simultaneously being shelved by impurity because of each check valve assembly is very low, therefore uses water pump to use safer.
Further improvement, said base is fixed with the filter screen covered by valve port.It arranges filter screen at valve port place, effectively prevents larger impurity by valve port, enters the pump housing interior to damage impeller, makes this water pump use safety further.
The exterior edge face of said base has inner fovea part, and valve port is through the bottom surface of inner fovea part, and described filter screen is shelved and is compressed on the end face of inner fovea part by described spring; Inner fovea part has certain effect of contraction to filter screen, prevent filter screen from offseting, filter screen is suppressed by spring simultaneously, when current pass through, filter screen and pedestal are firmly fixed, when not having current to pass through by the pressure energy of the additional spring of impulse force of current, the elastic force of spring itself is utilized to fix also enough by filter screen and valve seat, it utilizes pedestal itself to be fixed filter screen, and without the need to additionally filter screen and valve seat being fixed, structure is advantages of simple more.Certain filter screen also can be fixed in valve port, and this just needs supernumerary structure filter screen and valve port to be fixed, as extruding, and welding etc.
The periphery of said base is provided with the seal ring that flexible material is made, and the exterior edge face of seal ring and valve seat is fitted fixing, and the inner ring surface of seal ring is provided with annular caulking groove, and in the annular caulking groove of the periphery embedding sealing ring of pedestal, the outer periphery of filter screen enter annular caulking groove simultaneously.
Above-mentioned valve block assembly comprises the sealing gasket that fixed tray and flexible material are made, and described fixed tray and valve rod are fixed, and sealing gasket is fixed on fixed tray; Described sealing gasket is plate-like, and the periphery of sealing gasket has extended annular wall downwards, and sealing gasket is fitted on fixed tray, and described annular wall is coated on fixed tray periphery.Fixed tray is that hard material is made, and by being easily with ovable valve stem to move after water impact, and sealing gasket is flexible material, and is covered with whole fixed tray, guarantees sealing.The interior edge face of described pedestal has inwardly protruded boss part, and described valve port is through this boss part, and under the state that the interior edge face of sealing gasket and boss part is fitted, sealing gasket blocks valve port.
The second check valve assembly only allowed in the flow direction pump housing is also provided with in the intake tunnel of above-mentioned valve seat, second check valve assembly comprises the supplementary base with auxiliary valve port, supplementary base is fixed on the external port place of intake tunnel, the outer end of intake tunnel is communicated with the external world by auxiliary valve port, the inner of supplementary base is provided with the auxiliary valve gap that can overturn, auxiliary valve gap coordinates with auxiliary valve port, and auxiliary valve gap relies on deadweight or torsion spring to keep pressing down the trend of covering auxiliary valve port.It is the second check valve assembly of another kind of structural type, and this second check valve assembly is substantially identical with the first check valve assembly, has opening degree large, opens the advantage that dynamics is little.Certainly the check valve assembly of other structure existing can also be adopted.
The outer end of above-mentioned supplementary base is fixed with the auxiliary filter screen covered by auxiliary valve port.
The connection side of above-mentioned auxiliary valve gap has auxiliary flexible connecting sheet, and this auxiliary flexible connecting sheet is fixed in supplementary base.
Compared with prior art, the invention has the advantages that: 1, optical wavelength is short especially, range of diffraction is little, and the span of goods of furniture for display rather than for use and optical fiber luminescent end is little, easily blocks.
2, valve gap is that upper end is fixed, and rotate around upper end, lower end is blocking of optical fiber, according to lever principle, under the promotion of the little primary quantity of fluid, lower end can reach maximum displacement amount, be easy to the lower end of pushing goods of furniture for display rather than for use open, cause optical fiber printing opacity, material is thus formed highly sensitive water-flow signal and produce.
3, optical fiber surface flat smooth and also surface of contact minimum, chemical characteristics stablize, surface can not produce chemical reaction, flowing liquid in optical fiber luminescent end the most easily washed away by liquid, not easily produce incrustation scale, ensure that transmission of light is good.
4, optical fiber luminescent end and goods of furniture for display rather than for use lower end have span to exist, and without any mechanical friction, ensure that sensor does not have mechanical contact, long service life.
5, structure is simple, low price.
Impurity absorption in water easily causes water switch to lose efficacy by the material of 6, traditional water flow sensing unit easy demagnetization of long-term work and magnetic under the interference at extraneous magnetic or in the water of high-temperature.
7, photoelectricity water flow sensing unit adopts goods of furniture for display rather than for use formula structure to carry out shading, applies, can also apply as water pump check valve, and ensure that water flow is when gross area is opened at the feed-water end of water pump, and flow is not by loss.And traditional water flow sensing unit is because the structure such as piston type or impeller type all can reduce or suppress inflow to obtain initial start power ability actuating signal, so just cause the loss of flow of inlet water.
8, the water flow sensing unit such as dry reed-pipe, because it has mechanical hysteresis effect to exist, reaction does not have photoelectric sensor rapid.
9, be drawn out to from water in controller by optical fiber, there is not the problems such as the insulation difference of any electrical properties, substantially increase Security, fragile parts are light emitting diode in addition, and light emitting diode is positioned at the controller outside pump case, maintain and replace is quite convenient.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of photoelectricity water flow sensing unit embodiment;
Fig. 2 is the perspective view one of water pump first embodiment;
Fig. 3 is the perspective view two of water pump first embodiment;
Fig. 4 is the perspective view of valve seat part in water pump first embodiment;
Fig. 5 is the perspective view after Fig. 4 removes upper cover;
Fig. 6 is the perspective view after water pump first embodiment's valve seat part is provided with optical fiber;
Fig. 7 is the axial stereochemical structure sectional view of Fig. 6;
Fig. 8 is the side direction stereochemical structure sectional view of Fig. 6;
Fig. 9 is the three-dimensional exploded view of the second check valve assembly in water pump first embodiment;
Figure 10 is the perspective view of the second check valve assembly in water pump second embodiment;
Figure 11 is the sectional perspective exploded view of the second check valve assembly in water pump second embodiment;
Figure 12 is the axial stereochemical structure sectional view of the second check valve assembly in water pump second embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Figure 1, be a preferred embodiment of the present invention.
A kind of photoelectricity water flow sensing unit, comprise the transmission optical fiber 1 of left and right relative spacing setting and receive optical fiber 2, the outer end sending optical fiber 1 and reception optical fiber 2 all guides to outside water body, and be provided with to illuminate the light emitting diode 3 sending optical fiber 1 in contiguous optical fiber 1 position that sends outward at water body, reception optical fiber 2 can receive the light sending optical fiber 1 transmission, and also will receive light is sent to photoelectric conversion module 4, send optical fiber 1 and receive between optical fiber 2 and be provided with mobile block piece 5 under flow action, moving up and down decision and whether block at transmission optical fiber 1 and receive between optical fiber 2 by block piece 5, whether final decision receives optical fiber 2 can receive the light transmitted from generation optical fiber 1.
By LED light emitting diode 3 luminescence, illuminate and send optical fiber 1 and be delivered to reception optical fiber 2 through sending optical fiber 1.The light received is sent to photoelectric conversion module 4 and receives by reception optical fiber 2, and photoelectric conversion module 4 converts optical signal to electrical signal, sends to the control circuit part of equipment, with the break-make of control apparatus.Moved up and down by the block piece 5 sent between optical fiber 1 and reception optical fiber 2 and determine whether receive optical fiber 2 can receive the light transmitted from generation optical fiber 1, send optical fiber 1 when block piece 5 is blocked in and receives optical fiber 2, receive optical fiber 2 and can not receive the light transmitted from generation optical fiber 1, send optical fiber 1 when block piece 5 leaves and receive optical fiber 2, receive optical fiber 2 and receive the light transmitted from generation optical fiber 1, and be sent to photoelectric conversion module 4.
As shown in Fig. 2 ~ 9, be a kind of first specific embodiment with the water pump of aforementioned Photon-Electron water flow sensing unit:
Comprise the pump housing 6 with water intake 61 and water outlet 62, in water intake 61, be provided with the valve seat 7 with intake tunnel 71, in the intake tunnel 71 of valve seat 7, be provided with the first check valve assembly only allowed in the flow direction pump housing 6.
First check valve assembly comprises is located at the inner and valve gap 8 that can overturn of valve seat 7, and the connection side of valve gap 8 has and flexibly connects sheet 82, flexibly connects sheet 82 and is fixed on valve seat 7.Valve gap 8 coordinates with the upper end open of the intake tunnel 71 of valve seat 7, and valve gap 8 relies on deadweight to keep pressing down the upper end open trend of covering intake tunnel 11, and valve gap 8 is closed current and do not entered the pump housing 6, and valve gap 8 is opened, and current enter the pump housing by valve seat 7.
The inner sidewall of valve seat 7 is provided with two spaced walls 72, the opening end sidewall of valve gap 8 has the convex and baffle plate 81 stretched between two walls 72 in side, valve gap 8 and on baffle plate 81 form block piece 5, the light output end sending optical fiber 1 is located on one of them wall 72, the light receiver end receiving optical fiber 2 is located on another wall 72, and the light input end sending optical fiber 1 and the light output end receiving optical fiber 2 pass the rear extraction pump housing 6 from the perforation 63 pump housing 6; Be equipped with in perforation 63 on the pump housing 6 and be fixed with a plug 10, the periphery of plug 10 is arranged with and bores a hole 63 seal rings be sealed and matched 101, and the light input end of described transmission optical fiber 1 and the light output end receiving optical fiber 2 draw the pump housing 6 through after plug 10.The outer end of plug 10 is provided with outside thread, and the perforation 63 that the outer end of plug 10 passes on the pump housing 6 is threaded with nut 18, afterwards to be fixed in the perforation 63 of the pump housing by plug 10.Enter in Direct box after the light input end sending optical fiber 1 and the light output end receiving optical fiber 2 draw the pump housing 6, aforementioned light emitting diode 3 and photoelectric conversion module 4 are located in Direct box, and this part is not display in drawing.
Under the state that valve gap 8 is closed, baffle plate 81 blocks the conducting sending optical fiber 1 and receive between optical fiber 2, the light transmitted from transmission optical fiber 2 can not be received to make reception optical fiber 1, under valve gap 8 opening state, described baffle plate 81 opens the conducting sending optical fiber 1 and receive between optical fiber 2, can receive to make reception optical fiber 2 light transmitted from transmission optical fiber 1.
Be provided with sealing case 9 in the pump housing 6, the transmission optical fiber 1 and the reception optical fiber 2 that are positioned at the pump housing 6 are hidden in sealing box 9, and finally pass from one end of sealing case 9.Sealing case 9 is made up of end box 91 and upper cover 92, upper cover 92 is dismountable to be fixed on end box 91, the two ends of end box 91 are fixed with the wall of two on valve seat 7 72 respectively and are positioned at the outside of wall 72, there is in end box 91 first passage 911 for sending optical fiber 1 accommodation, and for receiving the second channel 912 of optical fiber 2 accommodation, first passage 911 and second channel 912 converge in one end.
The second check valve assembly only allowed in the flow direction pump housing 6 is also provided with in the intake tunnel 71 of valve seat, second check valve assembly comprises the pedestal 11 with valve port 111, pedestal 11 is fixed on the external port place of intake tunnel 71, the outer end of intake tunnel 71 is communicated with the external world by valve port 111, valve port 111 is equipped with the valve rod 12 of the upper and lower slippage of energy, the end being positioned at the valve rod 12 above pedestal 11 is connected with the valve block assembly in order to shutoff valve port 111, being positioned at the valve rod 12 below pedestal 11 is arranged with makes valve rod 12 keep moving down to make valve block assembly block the spring 14 of valve port 111 trend.
Pedestal 11 is fixed with the filter screen 13 covered by valve port 111.The exterior edge face of pedestal 11 has inner fovea part 112, and valve port 111 is through the bottom surface of inner fovea part 112, and filter screen 13 is shelved and is compressed on the end face of inner fovea part 112 by spring 14.The periphery of pedestal 11 is provided with the seal ring 15 that flexible material is made, seal ring 15 and the exterior edge face of valve seat 7 are fitted fixing, the inner ring surface of seal ring 15 is provided with annular caulking groove 151, and in the annular caulking groove 151 of the periphery embedding sealing ring 15 of pedestal 11, the outer periphery of filter screen 13 enter annular caulking groove 151 simultaneously; Valve block assembly comprises the sealing gasket 17 that fixed tray 16 and flexible material are made, and fixed tray 16 is fixed with valve rod 12, and sealing gasket 17 is fixed on fixed tray 16; Sealing gasket 17 is in plate-like, and the periphery of sealing gasket 17 has extended annular wall 171 downwards, and sealing gasket 17 is fitted on fixed tray 16, and annular wall 171 is coated on fixed tray 16 periphery; The interior edge face of described pedestal 11 has inwardly protruded boss part 113, and valve port 111 is through this boss part 113, and under the state that sealing gasket 7 and the interior edge face of boss part 13 are fitted, sealing gasket 17 blocks valve port 111.
Whether determine whether receive optical fiber 2 can receive the light transmitted from generation optical fiber 1 by the unlatching of valve gap 8, the light diameter transmitted because of optical fiber is very little, therefore valve gap 8 just can control pump working after opening very little angle, sensitivity is high, just energy is sensed to make water pump under small water flow state, compared with traditional magnet-type water flow sensing unit, it does not affect by external magnetic field, little by impurity interference in current, pump working is stablized, and optical fiber is not fragile, fragile parts are light emitting diode 3, and light emitting diode 3 is positioned at pump case, and maintain and replace is quite convenient outward.
As shown in Figure 10 ~ 12, be a kind of second specific embodiment with the water pump of aforementioned Photon-Electron water flow sensing unit:
The difference of the present embodiment and first embodiment is: on valve seat 7, the exterior edge face of two walls 72 is respectively equipped with the groove 721 for sending optical fiber 1 and the embedding of reception optical fiber 2, and being fixed with clamping plate 23 in the exterior edge face of two walls 72 by screw, transmission optical fiber 1 and reception optical fiber 2 are fixedly clamped in corresponding groove 721 by these clamping plate 23.
The second check valve assembly only allowed in the flow direction pump housing 6 is also provided with in the intake tunnel 71 of valve seat, second check valve assembly comprises the supplementary base 19 with auxiliary valve port 191, supplementary base 19 is fixed on the external port place of intake tunnel 71, the outer end of intake tunnel 71 is communicated with the external world by auxiliary valve port 191, the inner of supplementary base 19 is provided with the auxiliary valve gap 20 that can overturn, the connection side of auxiliary valve gap 20 has auxiliary flexible connecting sheet 22, and this auxiliary flexible connecting sheet 22 is fixed in supplementary base 19.Auxiliary valve gap 20 coordinates with auxiliary valve port 191, and auxiliary valve gap 20 relies on deadweight or torsion spring to keep pressing down the trend of covering auxiliary valve port 191.The outer end of supplementary base 19 is fixed with the auxiliary filter screen 21 covered by auxiliary valve port 191.
Although more than describe in detail the preferred embodiments of the present invention, should be expressly understood that, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a photoelectric current body sensor, it is characterized in that: comprise the transmission optical fiber (1) of left and right relative spacing setting and receive optical fiber (2), the outer end sending optical fiber (1) and reception optical fiber (2) all guides to outside fluid, and be provided with to illuminate the light emitting diode (3) sending optical fiber (1) in contiguous optical fiber (1) position that sends outward at fluid, receive optical fiber (2) can receive transmission optical fiber (1) light that transmits also will receive light is sent to photoelectric conversion module (4), send optical fiber (1) and receive between optical fiber (2) and be provided with mobile block piece (5) under fluid matasomatism, moving up and down decision and whether block between transmission optical fiber (1) and reception optical fiber (2) by block piece (5), whether final decision receives optical fiber (2) can receive the light transmitted from generation optical fiber (1).
2. photoelectric current body sensor according to claim 1, it is characterized in that: one end of described block piece (5) is hinged, realize whether blocking in transmission optical fiber (1) by the deflection of block piece under fluid matasomatism and receive between optical fiber (2).
3. one kind has the water pump of photoelectric current body sensor as claimed in claim 2, comprise the pump housing (6) with water intake (61) and water outlet (62), be provided with the valve seat (7) with intake tunnel (71) in water intake (61), in the intake tunnel (71) of valve seat (7), be provided with the first check valve assembly only allowed in the flow direction pump housing (6); It is characterized in that: described first check valve assembly comprises is located at the inner valve gap (8) that also can overturn of valve seat (7), valve gap (8) coordinates with the upper end open of the intake tunnel (71) of valve seat (7), and valve gap (8) relies on deadweight or torsion spring to keep pressing down the upper end open trend of covering intake tunnel (11); The opening end sidewall of described valve gap (8) has the convex baffle plate in side (81), described transmission optical fiber (1) and receive optical fiber (2) and to introduce in the pump housing and to be positioned at baffle plate (81) left and right sides; Under the state that valve gap (8) is closed, described baffle plate (81) blocks the conducting sending optical fiber (1) and receive between optical fiber (2), the light transmitted from transmission optical fiber (2) can not be received to make reception optical fiber (1), under valve gap (8) opening state, described baffle plate (81) opens the conducting sending optical fiber (1) and receive between optical fiber (2), can receive to make reception optical fiber (2) light transmitted from transmission optical fiber (1).
4. water pump according to claim 3, it is characterized in that: the inner sidewall of described valve seat (7) is provided with two spaced walls (72), described baffle plate (81) stretches between two walls (72), the light output end sending optical fiber (1) is located on one of them wall (72), the light receiver end receiving optical fiber (2) is located on another wall (72), the light input end sending optical fiber (1) and the light output end receiving optical fiber (2) pass the rear extraction pump housing (6) from the perforation (63) the pump housing (6).
5. water pump according to claim 4, it is characterized in that: be equipped with in the perforation (63) on described pump case (6) and be fixed with a plug (10), the seal ring (101) that the periphery of plug (10) is arranged with and bore a hole (63) are sealed and matched, the light input end of described transmission optical fiber (1) and the light output end of reception optical fiber (2) draw the pump housing (6) afterwards through plug (10).
6. water pump according to claim 4, it is characterized in that: in the described pump housing (6), be provided with sealing case (9), the transmission optical fiber (1) and reception optical fiber (2) that are positioned at the pump housing (6) are hidden in sealing box (9), and finally pass from one end of sealing case (9); Described sealing case (9) is made up of end box (91) and upper cover (92), upper cover (92) is dismountable to be fixed on end box (91), the two ends of end box (91) are fixed with two walls (72) on valve seat (7) and are positioned at the outside of wall (72) respectively, there is in end box (91) first passage (911) held for transmission optical fiber (1), and for the second channel (912) that reception optical fiber (2) is held, first passage (911) and second channel (912) converge in one end.
7. water pump according to claim 4, it is characterized in that: the exterior edge face of upper two walls (72) of described valve seat (7) is respectively equipped with the groove (721) embedded for transmission optical fiber (1) and reception optical fiber (2), and being fixed with clamping plate (23) in the exterior edge face of described two walls (72) by screw, these clamping plate (23) will send optical fiber (1) and receive optical fiber (2) and be fixedly clamped in corresponding groove (721).
8. water pump according to claim 3, is characterized in that: the connection side of described valve gap (8) has and flexibly connects sheet (82), and this flexibly connects sheet (82) and is fixed on valve seat (7).
9. water pump according to claim 3, it is characterized in that: in the intake tunnel (71) of described valve seat, be also provided with the second check valve assembly only allowed in the flow direction pump housing (6), second check valve assembly comprises the pedestal (11) with valve port (111), pedestal (11) is fixed on the external port place of intake tunnel (71), the outer end of intake tunnel (71) is communicated with the external world by valve port (111), valve port (111) is equipped with the valve rod (12) of the upper and lower slippage of energy, the end of valve rod (12) being positioned at pedestal (11) top is connected with the valve block assembly in order to shutoff valve port (111), be positioned at pedestal (11) below valve rod (12) on be arranged with make valve rod (12) keep move down to make valve block assembly block the spring (14) of valve port (111) trend.
10. water pump according to claim 8, is characterized in that: described pedestal (11) is fixed with the filter screen (13) covered by valve port (111); The exterior edge face of described pedestal (11) has inner fovea part (112), valve port (111) is through the bottom surface of inner fovea part (112), and described filter screen (13) is shelved and is compressed on the end face of inner fovea part (112) by described spring (14).
11. water pumps according to claim 9, it is characterized in that: the periphery of described pedestal (11) is provided with the seal ring (15) that flexible material is made, seal ring (15) and the exterior edge face of valve seat (7) are fitted fixing, the inner ring surface of seal ring (15) is provided with annular caulking groove (151), in the annular caulking groove (151) of periphery embedding sealing ring (15) of pedestal (11), the outer periphery of filter screen (13) enter annular caulking groove (151) simultaneously; Described valve block assembly comprises the sealing gasket (17) that fixed tray (16) and flexible material are made, described fixed tray (16) is fixed with valve rod (12), and sealing gasket (17) is fixed on fixed tray (16); Described sealing gasket (17) is in plate-like, the periphery of sealing gasket (17) has extended annular wall (171) downwards, sealing gasket (17) is fitted on fixed tray (16), and described annular wall (171) is coated on fixed tray (16) periphery; The interior edge face of described pedestal (11) has inwardly protruded boss part (113), described valve port (111) is through this boss part (113), under the state that sealing gasket (7) and the interior edge face of boss part (13) are fitted, sealing gasket (17) blocks valve port (111).
12. water pumps according to claim 3, it is characterized in that: in the intake tunnel (71) of described valve seat, be also provided with the second check valve assembly only allowed in the flow direction pump housing (6), second check valve assembly comprises the supplementary base (19) with auxiliary valve port (191), supplementary base (19) is fixed on the external port place of intake tunnel (71), the outer end of intake tunnel (71) is communicated with the external world by auxiliary valve port (191), the inner of supplementary base (19) is provided with the auxiliary valve gap (20) that can overturn, auxiliary valve gap (20) coordinates with auxiliary valve port (191), auxiliary valve gap (20) relies on deadweight or torsion spring to keep pressing down the trend of covering auxiliary valve port (191).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510291102.8A CN104847960B (en) | 2015-05-29 | 2015-05-29 | Water pump with photoelectricity fluid sensor |
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| CN201510291102.8A CN104847960B (en) | 2015-05-29 | 2015-05-29 | Water pump with photoelectricity fluid sensor |
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| CN104847960A true CN104847960A (en) | 2015-08-19 |
| CN104847960B CN104847960B (en) | 2017-06-13 |
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| CN106090416B (en) * | 2016-07-21 | 2018-05-22 | 浙江新控泵业有限公司 | The photoelectricity fluid sensor of scale-deposit-preventing and the water pump with the sensor |
| CN114658665A (en) * | 2022-04-26 | 2022-06-24 | 新界泵业(浙江)有限公司 | Anticorrosive external mixing type self-priming pump |
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| Publication number | Publication date |
|---|---|
| CN104847960B (en) | 2017-06-13 |
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Address after: The town of Zhejiang province 317525 Daxi road Wenling City, No. 518 Patentee after: Zhejiang new control pump industry Limited by Share Ltd Address before: 317500 Zhejiang city of Wenling province Huaqiao Village No. 595 North Street Patentee before: ZHEJIANG SINCONTROL PUMP INDUSTRY CO., LTD. |