US20210332822A1 - Flow controllable liquid pump and working method thereof - Google Patents
Flow controllable liquid pump and working method thereof Download PDFInfo
- Publication number
- US20210332822A1 US20210332822A1 US16/931,851 US202016931851A US2021332822A1 US 20210332822 A1 US20210332822 A1 US 20210332822A1 US 202016931851 A US202016931851 A US 202016931851A US 2021332822 A1 US2021332822 A1 US 2021332822A1
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- Prior art keywords
- liquid pump
- runner
- plug
- fluid
- inlet
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Classifications
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
- F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
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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
-
- 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
-
- 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
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0203—Magnetic flux
-
- 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
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
Definitions
- the invention relates to the technical field of pumps, and more particularly, to a liquid pump.
- diaphragm type micro water pump The working principle of diaphragm type micro water pump is as follows: a motor inside the pump drives the pump to do circular motion, and a mechanical means makes a diaphragm (the diaphragm takes many forms) inside the water pump do reciprocating motion, thereby compressing and stretching air inside the pump chamber. A pressure differential is created between a water outlet or a water inlet and external atmospheric pressure under the effect of a one-way valve. Then water is pushed into the water inlet and is discharged out from the water outlet under the effect of the pressure differential.
- Such a micro water pump has been well used in many industries, such as small home appliances, and medical equipments. However, for those micro water pumps, it is difficult to precisely adjust the water flow.
- the micro water pump comprises an upper cover, a valve seat, a water bag seat, base shell, water bags, a curved rod, a drive shaft, an eccentric wheel, motor and an output circuit board.
- the motor is installed on the base shell, a motor shaft of the motor extends into the base shell and is directly connected to the eccentric wheel inside the base shell.
- the eccentric wheel is connected to the curved rod through the drive shaft.
- the water bags are installed on a support at an upper end of the curved rod, wherein the support radiates outward.
- the water bags are installed on the water bag seat.
- the water bag seat is sealingly installed on the base shell.
- the valve seat is sealingly installed on the water bag seat.
- the valve seat has water inlets and water outlets for each of the water bags.
- One-way valves are respectively disposed on the water inlets and the water outlets.
- the upper cover is sealingly installed on the valve seat.
- the upper cover forms a water outlet port and a water inlet port.
- the water inlet port communicates with each of the water inlets, and the water outlet port communicates with each of the water outlets.
- the photoelectric shield and the photoelectric switch work together to detect the rotational speed of the motor.
- the photoelectric switch is electrically connected to the output circuit board.
- the output circuit board is configured for being electrically connected to the external motor controller, and for sending the information of the rotational speed of the motor to the external motor controller.
- the rotational speed of the motor is detected by the photoelectric switch.
- the output circuit board sends the rotational speed to the external motor controller, so as to enable the motor controller to precisely control the rotational speed of the motor.
- the photoelectric switch has the advantages of long detection distance, few restrictions on the objects to be detected, short response time, so as to implement the non-contact detection.
- the unclosed photoelectric detection switch is prone to be affected by pollutants, which may affect the precise detection of the flow.
- the conventional micro liquid pumps are fixed with three screws only between an upper cover and a middle cover. Therefore, although the upper cover and the middle cover may press a gasket arranged therebetween at a position where the screws are installed, since the pressure applied on the screws is reduced at the position where the screws are located, the gasket may not be tightly pressed, so that the liquid pump is not tightly sealed.
- the conventional flow controllable liquid pump has a flow control device arranged inside the casing of the pump.
- the flow control device When the flow control device is contaminated and needs to be cleaned, or when the flow control device requires maintenance, the only way is to remove the pump casing.
- other structures may be damaged when the pump casing is removed.
- an object of the present invention is to provide a flow adjustable liquid pump.
- a liquid pump comprising: a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet being respectively communicate with the pump chamber, the pump chamber being configured for introducing the fluid from the fluid inlet into the pump chamber and/or discharging the fluid from the pump chamber to the fluid outlet by periodical varying of the volume of the pump chamber;
- a driving mechanism driving the pump chamber to vary the volume of the pump chamber periodically by periodical rotating of the driving mechanism
- runner being driven by the driving mechanism and rotating periodically therewith, the periodical rotation of the runner causing a magnetic pole arranged thereon to change periodically;
- a Hall sensor monitoring the periodic change of the magnetic pole to generate a signal matching the rotation number of the driving mechanism.
- the flexible component deforms reciprocately along a direction of its axis vary the volume periodically;
- the liquid pump further comprises a transmission component
- the driving mechanism drives the transmission component to rotate
- the transmission component has an inclined surface
- an angle is formed between the inclined surface and a radial surface of the flexible component
- the inclined surface rotates about the axis so that the flexible component deforms reciprocately along the direction of its axis.
- the driving mechanism is a motor
- a motor shaft of the motor is fixedly connected to the runner
- the liquid pump further comprises a connecting rod for connecting the runner and the transmission component, an axis of the connecting rod form an angle with respect to an axis of the motor shaft.
- liquid pump wherein a shaft hole is formed in the runner along the direction of its axis, the motor shaft is arranged inside the shaft hole; an inclined hole is formed in the runner, the connecting rod is arranged inside the inclined hole, an axis of the inclined hole form an angle with respect to an axis of the motor shaft;
- the inclined hole is a blind hole, and the inclined hole forms a step structure at a surface of the runner.
- each of the magnet mounting columns is provided with a magnet therein, and the magnet rotates periodically with the runner, so as to cause a periodic change in the magnetic pole.
- the shaft hole comprises a first shaft hole portion for receiving the motor shaft, and a second shaft hole portion communicating with the first shaft hole portion and passing through a surface of the runner, wherein an internal diameter of the first shaft hole potion is greater than that of the second shaft hole portion, and the first shaft hole portion is coaxial with the second shaft hole portion.
- a liquid pump comprising: an upper cover, a middle cover, and a lower cover sealingly connected to one another from top to bottom, and
- a casing arranged at a lower end of the lower cover, a socket portion being formed on an outer peripheral wall of the casing, an accommodating cavity being formed inside the socket portion, one end of the accommodating cavity being provided with an opening, and the other end of the accommodating cavity being provided with a button hole;
- a motor a runner, and a magnet
- a motor shaft of the motor passing through a lower end of the casing and extending to an interior of the casing and being fixedly connected to the runner, wherein, an outer peripheral wall of the runner includes two first planes parallel to each other, two magnet mounting columns are symmetrically disposed on each of the two first planes, each of the magnet mounting columns is provided with the magnet therein, the motor rotates periodically to drive the runner, so as to cause a periodic change in the magnetic pole;
- the Hall sensor disposed inside the accommodating cavity, wherein the Hall sensor has a buckle matching the button hole, and the Hall sensor monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of the motor.
- an inner wall of the accommodating cavity which is closer to the casing, is provided with a limit clamping block, the limit clamping block extends from one end of the accommodating cavity to the other end thereof.
- the middle cover is provided with three inlet channels and three outlet channels, all the three inlet channels communicate with the fluid inlet, all the three outlet channels communicate with the fluid outlet;
- the three outlet channels are arranged at the center of the middle cover, and the three inlet channels are arranged about a periphery of the three outlet channels.
- the liquid pump further comprises a pump chamber mechanism, wherein the pump chamber mechanism is disposed between the middle cover and the casing, the pump chamber mechanism comprises, which are arranged from top to bottom, a mounting part, a connecting part, a squeezing part, an extending part, and a liming part;
- the mounting part is arranged between the middle cover and the lower cover; the connecting part, the squeezing part, the extending part, and the limiting part are received inside the lower cover and/or the casing;
- the connecting part is a flexible part, the connecting part has a hollow structure, the connecting part deforms reciprocately along the direction of its axis to vary the volume periodically, so as to introduce the fluid from the fluid inlet into the connecting part and/or discharging the fluid from the connecting part to the fluid outlet.
- the pump chamber mechanism comprises the mounting part and three connecting parts connected with the mounting part, and each of the connecting parts is connected to a squeezing part, an extending part, and a limiting part in series;
- each of the connecting parts communicates with one of the inlet channels and one of the outlet channels only;
- the connecting parts are cylindrical or bowl-shaped, the squeezing part is cylindrical.
- the liquid pump further comprises a plug, the plug is arranged at a middle portion of an upper surface of the middle cover, the plug allows a one-way flow of the fluid from the connecting part to the outlet channel;
- a plug slot is arranged at the middle portion of the upper surface of the middle cover, the plug is disposed inside the plug slot, the outlet channels are also disposed inside the plug slot, a triangular plug positioning column is also disposed inside the plug slot;
- the plug comprises:
- the plug sealing surface is an arc-shaped surface, a concave side of the plug sealing surface is arranged opposite to the three outlet channels;
- the plug positioning block being triangular and arranged in the middle of a convex side of the plug sealing surface
- a triangular fixing hole opening into an interior of the plug positioning block from the concave side of the plug sealing surface, wherein the triangular fixing hole matches the plug positioning column;
- each of the reinforces support sections extends from an edge of the plug positioning block to an outer edge of the convex side of the plug sealing surface;
- the three reinforced support sections divide the plug sealing surface into three plug sealing areas, and each of the plug sealing areas directly faces one of the three outlet channels.
- the liquid pump further comprises three umbrella valves, wherein the three umbrellas valves are arranged at a lower surface of the middle cover and arranged about the circumference of the plug, each of the connecting parts is provided with one of the three umbrella valves, each of the umbrella valves allows a one-way flow of the fluid from the inlet channel to the connecting part;
- each of the umbrella valves comprises:
- umbrella valve sealing surface wherein the umbrella valve sealing surface is an arc-shaped surface, a concave side of the umbrella valve sealing surface directly faces the three inlet channels, a convex side of the umbrella valve sealing surface directly faces the connecting parts;
- a spherical fixing section connected to the umbrella valve connecting section, and confining the umbrella valves to the middle cover through the umbrella valve support part, the umbrella valve connecting section, and the spherical fixing section.
- each of the inlet channels comprises: a crescent-shaped inlet sink, a plurality of inlet holes formed in the inlet sink, an umbrella valve positioning hole formed in the inlet sink;
- the umbrella connecting section is arranged inside the umbrella valve positioning hole, the umbrella valve support part and the spherical fixing section are arranged at two sides of the umbrella valve positioning hole, respectively;
- the plurality of inlet holes are formed around the umbrella valve positioning hole, and the umbrella valve sealing surface covers the plurality of inlet holes.
- each of the outlet channels comprises: a waist-shaped outlet hole, and a limited rod connecting inner walls of two sides of the outlet hole.
- the lower cover comprises: a lower cover plate, and a lower cover side wall connected to an outer edge of the lower cover plate, wherein three through grooves are formed on the lower cover plate for receiving the connecting parts, each of the through grooves is provided with one of the connecting parts;
- a lower surface of the lower cover plate extends downwardly from an outer edge of the through grooves to form a holding part for protecting the connecting parts
- a lower surface of the mounting part has a positioning part, and an upper surface of the lower cover plate is provided with a positioning groove matching the positioning part.
- the liquid pump further comprises an impeller, the impeller has an inclined plane, an angel is formed between the inclined plane and a plane where the mounting part is located, the impeller rotates around an axis of the motor shaft to cause the connecting part to deform reciprocately along a direction of its axis;
- each of the annular structures is sleeved on the extending part, and the annular structures are defined between the squeezing part and the limiting part;
- the impeller rotates about the axis of the motor shaft to cause the three annular structures to displace reciprocately along a direction of the axis, to cause the connecting part to deform reciprocately along a direction of its axis.
- the liquid pump further comprises a connecting rod, the connecting rod connects the runner and the impeller, an angle is formed between an axis of the connecting rod and the axis of the motor shaft;
- an upper end of the connecting rod is close to the axis of the motor shaft, and a lower end of the connecting rod is away from the axis of the motor shaft.
- a working method of the liquid pump wherein the liquid pump comprises: an upper cover, a middle cover, and a lower cover which are connected to one another from top to bottom, the liquid pump further comprises a motor, a runner, a magnet, and a Hall sensor, a motor shaft of the motor passes through the casing and is fixedly connected to the runner inside the casing, the magnets are arranged respectively on two sides of the runner, the Hall sensor monitors the magnet;
- the upper cover is provided with a fluid inlet and a fluid outlet;
- the middle cover is provided with at least one inlet channel and at least one outlet channel, the inlet channel communicates with the fluid inlet, and the outlet channel communicates with the fluid outlet;
- the liquid pump further comprises a leather cup, the leather cup communicates with the inlet channel and the outlet channel, a first one-way valve is provided between the inlet channel and the leather cup, a second one-way valve is provided between the leather cup and the outlet channel;
- the liquid pump further comprises an impeller, the impeller is connected to the runner, an upper surface of the impeller is an inclined surface, an outer edge of the impeller is connected to the leather cup through a connection point;
- the working method comprises:
- the motor drives the runner to rotate, the runner drives the impeller to rotate about the axis of the motor shaft of the motor, the rotation of the impeller is converted into a reciprocating motion of the connection point to drive the leather cup to deform reciprocately, the leather cup is configured for introducing the fluid from the fluid inlet into the leather cup and/or discharging the fluid from the leather cup to the fluid outlet by periodical varying of the volume of the leather cup;
- the Hall sensor monitors the periodic change of the magnetic pole to generate a pulse signal matching the rotation number of the motor
- the flow rate of the liquid pump is controlled by inputting instructions to the motor and by obtaining the number of cycles of the pulse signal.
- the present invention has the beneficial effects over the prior art:
- the Hall sensor together with the magnet, monitors the rotational speed of the motor, thereby controlling the motor to implement a precise control of the flow rate.
- the one-way control of three outlet channels can be achieved by setting a plug, so that the internal space and costs of the liquid pump are saved.
- each pump chamber mechanism may work independently without interfering with each other, and the internal space and costs of the liquid pump are saved.
- the runner is designed such that quick assembly and disassembly of all the components are achieved, and a precise measurement and control of the working track of all the components are achieved.
- FIG. 1 is a perspective view of a liquid pump according to the present invention
- FIG. 2 is a perspective view of a liquid pump according to the present invention.
- FIG. 3 is a perspective view of a liquid pump according to the present invention.
- FIG. 4 is a cross-sectional view of a liquid pump according to the present invention.
- FIG. 4 a is a cross-sectional view of a liquid pump according to the present invention.
- FIG. 5 is an exploded view of a liquid pump according to the present invention.
- FIG. 6 is an exploded view of a liquid pump according to the present invention.
- FIG. 7 is a perspective view of an upper cover of a liquid pump according to the present invention.
- FIG. 8 is a perspective view of an upper cover of a liquid pump according to the present invention.
- FIG. 9 is a perspective view of a seal ring of a liquid pump according to the present invention.
- FIG. 10 is a perspective view of a plug of a liquid pump according to the present invention.
- FIG. 11 is a perspective view of a plug of a liquid pump according to the present invention.
- FIG. 12 a is a perspective view of a middle cover of a liquid pump according to the present invention.
- FIG. 12 b is a perspective view of a middle cover of a liquid pump according to the present invention.
- FIG. 13 is a perspective view of a middle cover of a liquid pump according to the present invention.
- FIG. 14 is a perspective view of an umbrella valve of a liquid pump according to the present invention.
- FIG. 15 is a perspective view of an umbrella valve of a liquid pump according to the present invention.
- FIG. 16 is a perspective view of an impeller of a liquid pump according to the present invention.
- FIG. 17 is a perspective view of an impeller of a liquid pump according to the present invention.
- FIG. 18 is a perspective view of a pump chamber mechanism of a liquid pump according to the present invention.
- FIG. 19 is a perspective view of a pump chamber mechanism of a liquid pump according to the present invention.
- FIG. 19 a is a cross-sectional view of a pump chamber mechanism of a liquid pump according to the present invention.
- FIG. 19 b is a cross-sectional view of a pump chamber mechanism of a liquid pump according to the present invention.
- FIG. 20 is a perspective view of a lower cover of a liquid pump according to the present invention.
- FIG. 20 a is a perspective view of a lower cover of a liquid pump according to the present invention.
- FIG. 21 is a perspective view of a connecting rod, a runner, and a magnet of a liquid pump according to the present invention.
- FIG. 22 is a perspective view of a connecting rod, a runner, and a magnet of a liquid pump according to the present invention.
- FIG. 22 a is a cross-sectional view of a runner of a liquid pump according to the present invention.
- FIG. 23 is a perspective view of a casing, a motor, and a Hall sensor of a liquid pump according to the present invention.
- FIG. 24 a is a perspective view of a casing of a liquid pump according to the present invention.
- FIG. 24 b is a perspective view of a casing of a liquid pump according to the present invention.
- “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
- the term “plurality” means a number greater than one.
- a preferred embodiment of a liquid pump comprising an upper cover 100 , a middle cover 101 , and a lower cover 102 sealingly connected to one another from top to bottom, and further comprising: a casing 103 , arranged at a lower end of the lower cover 102 , a socket portion 1031 being formed on an outer peripheral wall of the casing 103 , an accommodating cavity being formed inside the socket portion 1031 , one end of the accommodating cavity being provided with an opening, and the other end of the accommodating cavity being provided with a button hole 1032 .
- a middle cover 101 , and a lower cover 102 , and the casing 103 are fixedly connected by means of a plurality of screws located at an outer edge thereof.
- the upper cover 100 is removably connected to the middle cover 101 by means of a plurality of buckles located at an outer edge thereof.
- a seal ring 113 is provided between the upper cover 101 and the lower cover 102 , and an outer edge of the seal ring 113 preferably has a plurality of avoiding slots 1131 to avoid the screws.
- the casing 103 also has a fixing structure for fixing the entire liquid pump to other mechanisms/devices.
- the fixing structure comprises: a triangular first plate 1035 which is radially arranged, a second plate 1036 vertically connected to the first plate 1035 , and at least one third plate 1037 for connecting the first plate 1035 and the second plate 1036 for reinforcement.
- a fixing hole or a threaded hole is formed in the second plate 1036 .
- the third plate 1037 abuts against or is fixed to an outer wall of the motor 104 with respect to the other side of the first plate 1035 .
- a motor 104 passes through a lower end of the casing 103 and extends to an interior of the casing 103 and is fixedly connected to the runner 105 , wherein, an outer peripheral wall of the runner 105 includes two first planes parallel to each other, two magnet mounting columns 1051 are disposed on each of the two first planes.
- the two magnet mounting columns 1051 are hollow cylindrical structures. Axes of the two magnet mounting columns 1051 are preferably arranged perpendicular to the axis of the casing 103 .
- the two magnet mounting columns 1051 are symmetrically disposed. Each of the magnet mounting columns 1051 is provided with a magnet 106 therein, and the two magnets 106 have different magnetic poles.
- the motor 104 rotates periodically to drive the runner 105 , so as to cause a periodic change in the magnetic pole.
- the liquid pump further comprises: a Hall sensor 107 disposed inside the accommodating cavity, wherein the Hall sensor 107 has a buckle 1071 matching the button hole 1032 , and the Hall sensor 107 monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of the motor 104 .
- inner walls on both sides of the accommodating cavity are respectively provided with collision strips 1033 , two sides of the Hall sensor 107 abut against the collision strips 1033 respectively.
- the collision strips 1033 limits the position of the Hall sensor 107 .
- an inner wall of the accommodating cavity which is closer to the cylindrical portion of the casing 103 , is provided with a limit clamping block 1034 , the limit clamping block 1034 extends from one end of the accommodating cavity to the other end thereof.
- the collision strips 1033 limits the position of the Hall sensor 107 .
- the upper cover 100 is provided with a fluid inlet 1001 and a fluid outlet 1002 .
- the middle cover 101 is provided with three inlet channels 1011 and three outlet channels 1012 , all the three inlet channels 1011 communicate with the fluid inlet 1001 , all the three outlet channels 1012 communicate with the fluid outlet 1002 .
- the three outlet channels 1012 are arranged at the center of the middle cover 101 , and the three inlet channels 1011 are arranged about a periphery of the three outlet channels 1012 .
- the seal ring 113 has an avoiding slot 1132 for avoiding the inlet channels 1011 and avoiding slots 1133 for the outlet channels 1012 .
- the avoiding slot 1132 located at a center of the seal ring 113 , and the avoiding slot 1132 is circular; the avoiding slots 1133 are disposed around the avoiding slot 1132 , and they are crescent-shaped.
- the liquid pump further comprises: a pump chamber mechanism 108 , wherein the pump chamber mechanism 108 is disposed between the middle cover 101 and the casing 103 , the pump chamber mechanism 108 comprises, which are arranged from top to bottom, a mounting part 1081 , a connecting part 1082 , a squeezing part 1083 , an extending part 1084 , and a liming part 1085 .
- the mounting part 1081 is arranged between the middle cover 101 and the lower cover 103 ; the connecting part 1082 , the squeezing part 1083 , the extending part 1084 , and the limiting part 1085 are received inside the lower cover 102 and/or the casing 103 .
- the connecting part 1082 is a flexible part, the connecting part 1082 has a hollow structure, the connecting part 1082 deforms reciprocately along the direction of its axis to vary the volume periodically, so as to introduce the fluid from the fluid inlet into the connecting part 1082 and/or discharging the fluid from the connecting part to the fluid outlet 1002 .
- the movement of the squeezing part 1083 in a horizontal direction shown in FIG. 19 makes the connecting part 1082 deform, leading to the change of the volume of the connecting part 1082 .
- the connecting part 1082 periodically changes the volume thereof accordingly.
- the pump chamber mechanism 108 comprises a mounting part 1081 and three connecting parts 1082 connected with the mounting part 1081 , and each of the connecting parts 1082 is connected to a squeezing part 1083 , an extending part 1084 , and a limiting part 1085 in series.
- each of the connecting parts 1082 communicates with one of the inlet channels 1011 and one of the outlet channels 1012 only, therefore, in each of the connecting parts 1082 , fluid enters the connecting part 1082 from a separate inlet channel 1011 , and discharges to the connecting part 1082 from a separate outlet channel 1012 , that is, each of the connecting parts 1082 is configured for the entering and discharging the fluid without mutual interference.
- the connecting parts 1082 are cylindrical or bowl-shaped, and the squeezing part 1083 is cylindrical.
- the liquid pump further comprises a plug 109 , the plug 109 is arranged at a middle portion of an upper surface of the middle cover 101 , the plug 109 allows a one-way flow of the fluid from the connecting part 1082 to the outlet channel 1012 .
- a plug slot 1013 is arranged at the middle portion of the upper surface of the middle cover 101 , the plug 109 is disposed inside the plug slot 1013 , the outlet channels 1012 are also disposed inside the plug slot 1012 , a triangular plug positioning column 1014 is also disposed inside the plug slot 1013 .
- the plug 109 comprises: a plug sealing surface 1091 , the plug sealing surface 1091 is an arc-shaped surface, a concave side of the plug sealing surface 1091 is arranged opposite to the three outlet channels 1012 .
- the plug 109 comprises: a plug positioning block 1092 , the plug positioning block 1092 is triangular and is arranged in the middle of a convex side of the plug sealing surface 1091 .
- the plug 109 comprises: a triangular fixing hole 1093 , opening into an interior of the plug positioning block 1092 from the concave side of the plug sealing surface 1091 , wherein the triangular fixing hole 1093 matches the plug positioning column 1014 .
- the plug 109 comprises: three reinforced support sections 1094 , wherein lower surfaces of the three reinforced support sections 1094 are connected to the convex side of the plug sealing surface 1091 , each of the reinforces support sections 1094 extends from an edge of the plug positioning block 1092 to an outer edge of the convex side of the plug sealing surface 1091 .
- the three reinforced support sections 1094 divide the plug sealing surface 1091 into three plug sealing areas, and each of the plug sealing areas directly faces one of the three outlet channels 1012 .
- the connecting part 1082 deforms due to the pushing force of the squeezing part 1083 , the volume of the connecting part 1082 is reduced, the fluid in the connecting part 1082 moves toward the outlet channel 1012 ; the plug sealing surface 1091 is deformed due to the squeezing force, and the outlet channel 1012 is exposed, so that the fluid is discharged out.
- the connecting part 1082 deforms due to the pulling force of the squeezing part 1083 , the volume of the connecting part 1082 is increased, negative pressure forms inside of the connecting part 1082 .
- the plug sealing surface 1091 is an arc-shaped surface, the corresponding plug sealing area of the plug sealing surface 1091 is absorbed on the middle cover 102 , the outlet channel 1012 is blocked, so as to prevent the backflow of the fluid. Therefore, the plug 109 serves as the one-way valve.
- the structure of the plug 109 allows the plus 109 to function as a one-way valve for the three outlet channels 1012 .
- the structure of the plug sealing area allows the three outlet channels 1012 which function as one-way valves do not interfere with each other.
- the liquid pump further comprises three umbrella valves 110 , wherein the three umbrella valves 110 are arranged at a lower surface of the middle cover 101 and arranged about the circumference of the plug 109 , each of the connecting parts 1082 is provided with one of the three umbrella valves 110 , each of the umbrella valves 110 allows a one-way flow of the fluid from the inlet channel 1011 to the connecting part 1082 .
- each of the umbrella valves 110 comprises: an umbrella valve sealing surface 1101 , wherein the umbrella valve sealing surface 1101 is an arc-shaped surface, a concave side of the umbrella valve sealing surface 1101 directly faces the three inlet channels 1011 , a convex side of the umbrella valve 1101 sealing surface directly faces the connecting parts 1082 .
- each of the umbrella valves 110 comprises: an umbrella valve support part 1102 , connected to the concave side of the umbrella valve sealing surface 1101 .
- each of the umbrella valves 110 comprises: an umbrella valve connecting section 1103 , connected to the umbrella valve support part 1102 .
- each of the umbrella valves 110 comprises: a spherical fixing section 1104 , connected to the umbrella valve connecting section 1103 , and confining the umbrella valves 110 to the middle cover 101 through the umbrella valve support part 1102 , the umbrella valve connecting section 1103 , and the spherical fixing section 1104 .
- the connecting part 1082 deforms due to the pulling force of the squeezing part 1083 , the volume of the connecting part 1082 is increased, negative pressure forms inside of the connecting part 1082 , the external fluid moves toward the inlet channel 1011 . Since the umbrella valve sealing surface 1101 is an arc-shaped structure, the fluid pushes out the umbrella valve sealing surface 1101 , then the inlet channel 1101 opens, the fluid enters into the connecting part 1082 , so that the fluid enters.
- the connecting part 1082 deforms due to the pressing force of the squeezing part 1083 , the volume of the connecting part 1082 is reduced, the fluid presses the umbrella valve sealing surface 1101 against the inlet channel 1011 , the inlet channel 1011 is blocked, so as to prevent the backflow of the fluid. Therefore, the umbrella valve 110 serves as the one-way valve.
- each of the inlet channels 1101 comprises: a crescent-shaped inlet sink 1011 a , a plurality of inlet holes 1011 b formed in the inlet sink 1011 a , an umbrella valve positioning hole 1011 c formed in the inlet sink 1011 a.
- the umbrella connecting section 1103 is arranged inside the umbrella valve positioning hole 1011 c , the umbrella valve support part 1102 and the spherical fixing section 1104 are arranged at two sides of the umbrella valve positioning hole 1011 c , respectively.
- the plurality of inlet holes 1011 b are formed around the umbrella valve positioning hole 1011 c , and the umbrella valve sealing surface 1101 covers the plurality of inlet holes 1011 b.
- each of the outlet channels 1012 comprises: a waist-shaped outlet hole 1012 a , and a limited rod 1012 b connecting inner walls of two sides of the outlet hole 1012 a .
- the limited rod 1012 b is configured to prevent the plug sealing surface 1091 of the plug being sucked into the outlet hole 1012 a.
- the waist-shaped outlet hole 1012 a is replaced by a small round hole.
- the small round hole can also prevent the plug sealing surface 1091 being sucked into the small round hole.
- the hole diameter of the outlet hole is smaller than that of the waist-shaped outlet hole 1012 a.
- the inlet channel 1011 and the outlet channel 1012 integrally form a substantially round structure to match the shape of the connecting part 1082 .
- an inlet channel 1011 and an outlet channel 1012 are configured for each of the connecting parts 1082 while the internal space of the liquid pump is saved as much as possible.
- the lower cover 102 comprises: a lower cover plate 1021 , and a lower cover side wall 1022 connected to an outer edge of the lower cover plate 1021 , wherein three through grooves 1023 are formed on the lower cover plate 1021 for receiving at least the connecting parts 1082 , each of the through grooves 1023 is provided with one of the connecting parts 1082 .
- a lower surface of the lower cover plate 1021 extends downwardly from an outer edge of the through grooves 1023 to form a holding part 1024 for protecting the connecting parts 1082 .
- a lower surface of the mounting part 1081 has a positioning part 1081 a , and an upper surface of the lower cover plate 1021 is provided with a positioning groove 1025 matching the positioning part 1081 a.
- the liquid pump further comprises an impeller 111 , the impeller 111 has an inclined surface, that is, a left surface of the impeller 111 shown in FIG. 16 .
- An angel is formed between the inclined surface and a plane where the mounting part 1081 is located, the impeller 111 rotates around an axis of the motor shaft to cause the connecting part 1082 to deform reciprocately along a direction of its axis.
- annular structures 1111 are arranged at an outer edge of the impeller 111 , each of the annular structures 1111 is sleeved on the extending part 1084 , and the annular structures 1111 are defined between the squeezing part 1083 and the limiting part 1085 .
- the impeller 111 comprises: an impeller connecting part 1112 , an impeller body 1113 and the above-mentioned annular structures 1111 arranged at an outer edge of the impeller body 1113 .
- a connecting rod slot 1115 is formed in the impeller connecting part 1112 for connecting to the connecting rod 112 as described below.
- the impeller body 1113 is substantially triangular.
- the annular structures 1111 are respectively arranged at three corners of the impeller body 1113 .
- a measuring slot 1114 is formed at a center of the impeller body 1113 .
- the measuring slot 1114 communicates with the connecting rod slot 1115 .
- the measuring slot 1114 is coaxial with the connecting rod slot 1115 , so as to facilitate the measurement of the distance between the connecting rod 112 and the annular structures 1111 .
- the impeller 111 rotates around the axis of the motor shaft to cause the three annular structures 1111 to displace reciprocately along a direction of the axis, and thus to cause the connecting part 1082 to deform reciprocately along a direction of its axis.
- the impeller 111 since the impeller 111 is inclined, when rotating or eccentrically rotating around a horizontal axis shown in FIG. 16 , the impeller 111 is capable of transforming the rotation or eccentric rotation thereof into the movement of the annular structures 1111 in the horizontal direction shown in FIG. 16 , so as to generate the pushing force on the squeezing part 1083 or to generate pulling force on the limiting part 1085 , thereby reducing or expanding the volume of the connecting part 1082 .
- the liquid pump further comprises a connecting rod 112 connecting the runner 105 and the impeller 111 , an axis of the connecting rod 112 form an angle with respect to an axis of the motor shaft.
- an upper end of the connecting rod 112 is close to the axis of the motor shaft, and a lower end of the connecting rod 112 is away from the axis of the motor shaft.
- a shaft hole 1052 is formed in the runner 105 along a direction of its axis, the motor shaft is arranged inside the shaft hole 1052 ; an inclined hole 1053 is formed in the runner 105 , the connecting rod 112 is arranged inside the inclined hole 1053 , an axis of the inclined hole 1053 form an angle with respect to an axis of the shaft hole 1052 .
- the inclined hole 1053 is a blind hole, and the inclined hole 1053 forms a step structure 1053 a at a surface of the runner.
- the step structure 1053 a is arranged such that the abrasion can be prevented.
- the step structure 1053 a comprises: a step expanding portion having a diameter greater than that of the inclined hole 1053 , and a step connecting portion having a diameter gradually decreasing toward the inclined hole 1053 .
- One end of the step connecting portion, with a larger diameter, has a diameter equal to that of the step expanding portion, and the other end of the step connecting portion, with a smaller diameter, has a diameter equal to that of the inclined hole 1053 .
- two opposite magnet mounting columns 1051 are arranged on two sides of the runner 105 along a direction of its axis, each of the magnet mounting columns 1051 is provided with a magnet 106 therein, and the magnet 106 rotates periodically with the runner 105 , so as to cause a periodic change in the magnetic pole.
- the shaft hole 1052 comprises a first shaft hole portion 1052 a for receiving the motor shaft, and a second shaft hole portion 1052 b communicating with the first shaft hole portion 1052 a and passing through a surface of the runner 105 , wherein an internal diameter of the first shaft hole potion 1052 a is greater than that of the second shaft hole portion 1052 b , and the first shaft hole portion 1052 a is coaxial with the second shaft hole portion 1052 b.
- the second shaft hole portion 1052 b is not necessarily for the accommodation or installation of the motor shaft.
- the second shaft hole portion 1052 b is arranged to facilitate the measurement of a distance between the motor shaft and the inclined hole 1053 , so as to achieve the precise control of the movement of the liquid pump.
- a surface of the runner 105 which is away from the motor 104 , extends outwardly to form a stepped portion 1054 of the runner.
- the stepped portion 1054 of the runner is disposed such that the entire runner 105 can be easily detached integrally.
- a working method of the liquid pump comprises: an upper cover 100 , a middle cover 101 , a lower cover 102 and a casing 103 connected to one another from top to bottom, the liquid pump further comprises a motor 104 , a runner 105 , a magnet 106 , and a Hall sensor 107 , a motor shaft of the motor 104 passes through the casing 103 and is fixedly connected to the runner 105 inside the casing 103 , the magnets 106 are arranged on two sides of the runner 105 respectively, the Hall sensor 107 monitors the magnet 106 .
- the upper cover 100 is provided with a fluid inlet 1001 and a fluid outlet 1002 ;
- the middle cover 101 is provided with at least one inlet channel 1011 and at least one outlet channel 1012 , the inlet channel 1011 communicates with the fluid inlet 1001 , and the outlet channel 1012 communicates with the fluid outlet 1002 .
- the liquid pump further comprises a leather cup (i.e., the pump chamber mechanism 108 ), the leather cup communicates with the inlet channel 1011 and the outlet channel 1012 , a first one-way valve (i.e., the umbrella valve 110 ) is provided between the inlet channel 1011 and the leather cup, a second one-way valve (i.e., the plug 109 ) is provided between the leather cup and the outlet channel 1012 ;
- a leather cup i.e., the pump chamber mechanism 108
- the leather cup communicates with the inlet channel 1011 and the outlet channel 1012
- a first one-way valve i.e., the umbrella valve 110
- a second one-way valve i.e., the plug 109
- the liquid pump further comprises an impeller 111 , the impeller 111 is connected to the runner 105 , an upper surface of the impeller 111 is an inclined surface, an outer edge of the impeller 111 is connected to the leather cup through a connection point;
- the working method comprises:
- the motor 104 drives the runner 105 to rotate
- the runner 105 drives the impeller 111 to rotate around the axis of the motor shaft of the motor 104
- the inclined surface of the impeller 111 the rotation of the is converted into a reciprocating motion of the connection point to drive the leather cup to deform reciprocately
- the leather cup is configured for introducing the fluid 1001 from the fluid inlet 1001 into the leather cup and/or discharging the fluid from the leather cup to the fluid outlet 1002 by periodical varying of the volume of the leather cup;
- the magnet 106 rotates with the runner 105 so as to cause a periodic change in the magnetic pole
- the Hall sensor 107 monitors the periodic change of the magnetic pole to generate a pulse signal matching the rotation number of the motor 104 ;
- the flow rate of the liquid pump is controlled by inputting instructions to the motor 104 and by obtaining the number of cycles of the pulse signal.
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Abstract
The invention discloses a flow controllable liquid pump and working method thereof. The liquid pump comprises a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet respectively communicate with the pump chamber, the pump chamber is configured for introducing the fluid from the fluid inlet into the pump chamber and/or discharging the fluid from the pump chamber to the fluid outlet by periodical varying of the volume of the pump chamber; the liquid pump further comprises: a driving mechanism, the driving mechanism drives the pump chamber to vary the volume periodically by periodical rotating of the driving mechanism; a runner, the runner is driven by the driving mechanism and rotates periodically therewith; and a Hall sensor, the Hall sensor monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of the driving mechanism.
Description
- The invention relates to the technical field of pumps, and more particularly, to a liquid pump.
- The working principle of diaphragm type micro water pump is as follows: a motor inside the pump drives the pump to do circular motion, and a mechanical means makes a diaphragm (the diaphragm takes many forms) inside the water pump do reciprocating motion, thereby compressing and stretching air inside the pump chamber. A pressure differential is created between a water outlet or a water inlet and external atmospheric pressure under the effect of a one-way valve. Then water is pushed into the water inlet and is discharged out from the water outlet under the effect of the pressure differential. Such a micro water pump has been well used in many industries, such as small home appliances, and medical equipments. However, for those micro water pumps, it is difficult to precisely adjust the water flow.
- It is known that people skilled in the art have studied the control of flow of the water pump, and a micro water pump in which flow can be precisely controlled has been developed. The micro water pump comprises an upper cover, a valve seat, a water bag seat, base shell, water bags, a curved rod, a drive shaft, an eccentric wheel, motor and an output circuit board. The motor is installed on the base shell, a motor shaft of the motor extends into the base shell and is directly connected to the eccentric wheel inside the base shell. The eccentric wheel is connected to the curved rod through the drive shaft. The water bags are installed on a support at an upper end of the curved rod, wherein the support radiates outward. The water bags are installed on the water bag seat. The water bag seat is sealingly installed on the base shell. The valve seat is sealingly installed on the water bag seat. The valve seat has water inlets and water outlets for each of the water bags. One-way valves are respectively disposed on the water inlets and the water outlets. The upper cover is sealingly installed on the valve seat. The upper cover forms a water outlet port and a water inlet port. The water inlet port communicates with each of the water inlets, and the water outlet port communicates with each of the water outlets. When the water pump works, the motor drives the eccentric wheel to move, and the movement is transferred to the curved rod via the drive shaft, then the water bags are driven to allow water come in or out. Furthermore, the eccentric wheel or the motor shaft corresponds to a photoelectric switch in a radial direction to form a photoelectric shield. The photoelectric shield and the photoelectric switch work together to detect the rotational speed of the motor. The photoelectric switch is electrically connected to the output circuit board. The output circuit board is configured for being electrically connected to the external motor controller, and for sending the information of the rotational speed of the motor to the external motor controller. When the pump works, the rotational speed of the motor is detected by the photoelectric switch. The output circuit board sends the rotational speed to the external motor controller, so as to enable the motor controller to precisely control the rotational speed of the motor. Thus, different amount of stable water flow under different back pressures can be obtained.
- The photoelectric switch has the advantages of long detection distance, few restrictions on the objects to be detected, short response time, so as to implement the non-contact detection. However, the unclosed photoelectric detection switch is prone to be affected by pollutants, which may affect the precise detection of the flow.
- In addition, the conventional micro liquid pumps are fixed with three screws only between an upper cover and a middle cover. Therefore, although the upper cover and the middle cover may press a gasket arranged therebetween at a position where the screws are installed, since the pressure applied on the screws is reduced at the position where the screws are located, the gasket may not be tightly pressed, so that the liquid pump is not tightly sealed.
- The conventional flow controllable liquid pump has a flow control device arranged inside the casing of the pump. When the flow control device is contaminated and needs to be cleaned, or when the flow control device requires maintenance, the only way is to remove the pump casing. However, it should be noted that other structures may be damaged when the pump casing is removed.
- There is no effective solution to the above-mentioned problems that the photoelectric switch of the liquid pump is easily polluted and the flow control device is not easy to replace.
- Given that the foregoing problems exist in the prior art, an object of the present invention is to provide a flow adjustable liquid pump.
- For this purpose, the technical solution provided in the present invention is as follows:
- a liquid pump, comprising: a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet being respectively communicate with the pump chamber, the pump chamber being configured for introducing the fluid from the fluid inlet into the pump chamber and/or discharging the fluid from the pump chamber to the fluid outlet by periodical varying of the volume of the pump chamber;
- further comprising: a driving mechanism, the driving mechanism driving the pump chamber to vary the volume of the pump chamber periodically by periodical rotating of the driving mechanism;
- further comprising:
- a runner, the runner being driven by the driving mechanism and rotating periodically therewith, the periodical rotation of the runner causing a magnetic pole arranged thereon to change periodically; and
- a Hall sensor, monitoring the periodic change of the magnetic pole to generate a signal matching the rotation number of the driving mechanism.
- In the above-mentioned liquid pump, wherein at least a part of the pump chamber is made of a flexible component, the flexible component deforms reciprocately along a direction of its axis vary the volume periodically;
- the liquid pump further comprises a transmission component, the driving mechanism drives the transmission component to rotate, the transmission component has an inclined surface, an angle is formed between the inclined surface and a radial surface of the flexible component, and the inclined surface rotates about the axis so that the flexible component deforms reciprocately along the direction of its axis.
- In the above-mentioned liquid pump, wherein the driving mechanism is a motor, a motor shaft of the motor is fixedly connected to the runner;
- the liquid pump further comprises a connecting rod for connecting the runner and the transmission component, an axis of the connecting rod form an angle with respect to an axis of the motor shaft.
- In the above-mentioned liquid pump, wherein a shaft hole is formed in the runner along the direction of its axis, the motor shaft is arranged inside the shaft hole; an inclined hole is formed in the runner, the connecting rod is arranged inside the inclined hole, an axis of the inclined hole form an angle with respect to an axis of the motor shaft;
- wherein, the inclined hole is a blind hole, and the inclined hole forms a step structure at a surface of the runner.
- In the above-mentioned liquid pump, wherein two opposite magnet mounting columns are arranged on two sides of the runner along the direction of its axis, each of the magnet mounting columns is provided with a magnet therein, and the magnet rotates periodically with the runner, so as to cause a periodic change in the magnetic pole.
- In the above-mentioned liquid pump, wherein the shaft hole comprises a first shaft hole portion for receiving the motor shaft, and a second shaft hole portion communicating with the first shaft hole portion and passing through a surface of the runner, wherein an internal diameter of the first shaft hole potion is greater than that of the second shaft hole portion, and the first shaft hole portion is coaxial with the second shaft hole portion.
- In the above-mentioned liquid pump, wherein a surface of the runner, which is away from the driving mechanism, extends outwardly to form a stepped portion of the runner.
- A liquid pump, comprising: an upper cover, a middle cover, and a lower cover sealingly connected to one another from top to bottom, and
- further comprising: a casing, arranged at a lower end of the lower cover, a socket portion being formed on an outer peripheral wall of the casing, an accommodating cavity being formed inside the socket portion, one end of the accommodating cavity being provided with an opening, and the other end of the accommodating cavity being provided with a button hole;
- a motor, a runner, and a magnet, a motor shaft of the motor passing through a lower end of the casing and extending to an interior of the casing and being fixedly connected to the runner, wherein, an outer peripheral wall of the runner includes two first planes parallel to each other, two magnet mounting columns are symmetrically disposed on each of the two first planes, each of the magnet mounting columns is provided with the magnet therein, the motor rotates periodically to drive the runner, so as to cause a periodic change in the magnetic pole;
- a Hall sensor disposed inside the accommodating cavity, wherein the Hall sensor has a buckle matching the button hole, and the Hall sensor monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of the motor.
- In the above-mentioned liquid pump, wherein inner walls on both sides of the accommodating cavity are respectively provided with collision strips, two sides of the Hall sensor abut against the collision strips;
- an inner wall of the accommodating cavity, which is closer to the casing, is provided with a limit clamping block, the limit clamping block extends from one end of the accommodating cavity to the other end thereof.
- In the above-mentioned liquid pump, wherein the upper cover is provided with a fluid inlet and a fluid outlet;
- the middle cover is provided with three inlet channels and three outlet channels, all the three inlet channels communicate with the fluid inlet, all the three outlet channels communicate with the fluid outlet;
- the three outlet channels are arranged at the center of the middle cover, and the three inlet channels are arranged about a periphery of the three outlet channels.
- The liquid pump further comprises a pump chamber mechanism, wherein the pump chamber mechanism is disposed between the middle cover and the casing, the pump chamber mechanism comprises, which are arranged from top to bottom, a mounting part, a connecting part, a squeezing part, an extending part, and a liming part;
- the mounting part is arranged between the middle cover and the lower cover; the connecting part, the squeezing part, the extending part, and the limiting part are received inside the lower cover and/or the casing;
- the connecting part is a flexible part, the connecting part has a hollow structure, the connecting part deforms reciprocately along the direction of its axis to vary the volume periodically, so as to introduce the fluid from the fluid inlet into the connecting part and/or discharging the fluid from the connecting part to the fluid outlet.
- In the above-mentioned liquid pump, wherein the pump chamber mechanism comprises the mounting part and three connecting parts connected with the mounting part, and each of the connecting parts is connected to a squeezing part, an extending part, and a limiting part in series;
- each of the connecting parts communicates with one of the inlet channels and one of the outlet channels only; and
- the connecting parts are cylindrical or bowl-shaped, the squeezing part is cylindrical.
- The liquid pump further comprises a plug, the plug is arranged at a middle portion of an upper surface of the middle cover, the plug allows a one-way flow of the fluid from the connecting part to the outlet channel;
- a plug slot is arranged at the middle portion of the upper surface of the middle cover, the plug is disposed inside the plug slot, the outlet channels are also disposed inside the plug slot, a triangular plug positioning column is also disposed inside the plug slot;
- the plug comprises:
- a plug sealing surface, the plug sealing surface is an arc-shaped surface, a concave side of the plug sealing surface is arranged opposite to the three outlet channels;
- a plug positioning block, the plug positioning block being triangular and arranged in the middle of a convex side of the plug sealing surface;
- a triangular fixing hole, opening into an interior of the plug positioning block from the concave side of the plug sealing surface, wherein the triangular fixing hole matches the plug positioning column;
- three reinforced support sections, wherein lower surfaces of the three reinforced support sections are connected to the convex side of the plug sealing surface, each of the reinforces support sections extends from an edge of the plug positioning block to an outer edge of the convex side of the plug sealing surface;
- the three reinforced support sections divide the plug sealing surface into three plug sealing areas, and each of the plug sealing areas directly faces one of the three outlet channels.
- The liquid pump further comprises three umbrella valves, wherein the three umbrellas valves are arranged at a lower surface of the middle cover and arranged about the circumference of the plug, each of the connecting parts is provided with one of the three umbrella valves, each of the umbrella valves allows a one-way flow of the fluid from the inlet channel to the connecting part;
- each of the umbrella valves comprises:
- an umbrella valve sealing surface, wherein the umbrella valve sealing surface is an arc-shaped surface, a concave side of the umbrella valve sealing surface directly faces the three inlet channels, a convex side of the umbrella valve sealing surface directly faces the connecting parts;
- an umbrella valve support part, connected to the concave side of the umbrella valve sealing surface;
- an umbrella valve connecting section, connected to the umbrella valve support part; and
- a spherical fixing section, connected to the umbrella valve connecting section, and confining the umbrella valves to the middle cover through the umbrella valve support part, the umbrella valve connecting section, and the spherical fixing section.
- In the above-mentioned liquid pump, wherein each of the inlet channels comprises: a crescent-shaped inlet sink, a plurality of inlet holes formed in the inlet sink, an umbrella valve positioning hole formed in the inlet sink;
- wherein, the umbrella connecting section is arranged inside the umbrella valve positioning hole, the umbrella valve support part and the spherical fixing section are arranged at two sides of the umbrella valve positioning hole, respectively;
- the plurality of inlet holes are formed around the umbrella valve positioning hole, and the umbrella valve sealing surface covers the plurality of inlet holes.
- In the above-mentioned liquid pump, wherein each of the outlet channels comprises: a waist-shaped outlet hole, and a limited rod connecting inner walls of two sides of the outlet hole.
- In the above-mentioned liquid pump, wherein the lower cover comprises: a lower cover plate, and a lower cover side wall connected to an outer edge of the lower cover plate, wherein three through grooves are formed on the lower cover plate for receiving the connecting parts, each of the through grooves is provided with one of the connecting parts;
- a lower surface of the lower cover plate extends downwardly from an outer edge of the through grooves to form a holding part for protecting the connecting parts;
- a lower surface of the mounting part has a positioning part, and an upper surface of the lower cover plate is provided with a positioning groove matching the positioning part.
- The liquid pump further comprises an impeller, the impeller has an inclined plane, an angel is formed between the inclined plane and a plane where the mounting part is located, the impeller rotates around an axis of the motor shaft to cause the connecting part to deform reciprocately along a direction of its axis;
- In the above-mentioned liquid pump, wherein three annular structures are arranged at an outer edge of the impeller, each of the annular structures is sleeved on the extending part, and the annular structures are defined between the squeezing part and the limiting part;
- the impeller rotates about the axis of the motor shaft to cause the three annular structures to displace reciprocately along a direction of the axis, to cause the connecting part to deform reciprocately along a direction of its axis.
- The liquid pump further comprises a connecting rod, the connecting rod connects the runner and the impeller, an angle is formed between an axis of the connecting rod and the axis of the motor shaft;
- wherein, an upper end of the connecting rod is close to the axis of the motor shaft, and a lower end of the connecting rod is away from the axis of the motor shaft.
- A working method of the liquid pump, wherein the liquid pump comprises: an upper cover, a middle cover, and a lower cover which are connected to one another from top to bottom, the liquid pump further comprises a motor, a runner, a magnet, and a Hall sensor, a motor shaft of the motor passes through the casing and is fixedly connected to the runner inside the casing, the magnets are arranged respectively on two sides of the runner, the Hall sensor monitors the magnet;
- the upper cover is provided with a fluid inlet and a fluid outlet; the middle cover is provided with at least one inlet channel and at least one outlet channel, the inlet channel communicates with the fluid inlet, and the outlet channel communicates with the fluid outlet;
- the liquid pump further comprises a leather cup, the leather cup communicates with the inlet channel and the outlet channel, a first one-way valve is provided between the inlet channel and the leather cup, a second one-way valve is provided between the leather cup and the outlet channel;
- the liquid pump further comprises an impeller, the impeller is connected to the runner, an upper surface of the impeller is an inclined surface, an outer edge of the impeller is connected to the leather cup through a connection point;
- the working method comprises:
- the motor drives the runner to rotate, the runner drives the impeller to rotate about the axis of the motor shaft of the motor, the rotation of the impeller is converted into a reciprocating motion of the connection point to drive the leather cup to deform reciprocately, the leather cup is configured for introducing the fluid from the fluid inlet into the leather cup and/or discharging the fluid from the leather cup to the fluid outlet by periodical varying of the volume of the leather cup;
- the magnet rotates with the runner so as to cause a periodic change in the magnetic pole, the Hall sensor monitors the periodic change of the magnetic pole to generate a pulse signal matching the rotation number of the motor;
- the flow rate of the liquid pump is controlled by inputting instructions to the motor and by obtaining the number of cycles of the pulse signal.
- By adopting the above-mentioned technical solutions, the present invention has the beneficial effects over the prior art:
- 1. the Hall sensor, together with the magnet, monitors the rotational speed of the motor, thereby controlling the motor to implement a precise control of the flow rate.
- 2. The one-way control of three outlet channels can be achieved by setting a plug, so that the internal space and costs of the liquid pump are saved.
- 3. With the arrangement of umbrellas valves and inlet channels and outlet channels in the present invention, each pump chamber mechanism may work independently without interfering with each other, and the internal space and costs of the liquid pump are saved.
- 4. The runner is designed such that quick assembly and disassembly of all the components are achieved, and a precise measurement and control of the working track of all the components are achieved.
- The accompanying drawings, together with the specification, illustrate exemplary embodiments of the present disclosure, and, together with the description, serve to explain the principles of the present invention.
-
FIG. 1 is a perspective view of a liquid pump according to the present invention; -
FIG. 2 is a perspective view of a liquid pump according to the present invention; -
FIG. 3 is a perspective view of a liquid pump according to the present invention; -
FIG. 4 is a cross-sectional view of a liquid pump according to the present invention; -
FIG. 4a is a cross-sectional view of a liquid pump according to the present invention; -
FIG. 5 is an exploded view of a liquid pump according to the present invention; -
FIG. 6 is an exploded view of a liquid pump according to the present invention; -
FIG. 7 is a perspective view of an upper cover of a liquid pump according to the present invention; -
FIG. 8 is a perspective view of an upper cover of a liquid pump according to the present invention; -
FIG. 9 is a perspective view of a seal ring of a liquid pump according to the present invention; -
FIG. 10 is a perspective view of a plug of a liquid pump according to the present invention; -
FIG. 11 is a perspective view of a plug of a liquid pump according to the present invention; -
FIG. 12a is a perspective view of a middle cover of a liquid pump according to the present invention; -
FIG. 12b is a perspective view of a middle cover of a liquid pump according to the present invention; -
FIG. 13 is a perspective view of a middle cover of a liquid pump according to the present invention; -
FIG. 14 is a perspective view of an umbrella valve of a liquid pump according to the present invention; -
FIG. 15 is a perspective view of an umbrella valve of a liquid pump according to the present invention; -
FIG. 16 is a perspective view of an impeller of a liquid pump according to the present invention; -
FIG. 17 is a perspective view of an impeller of a liquid pump according to the present invention; -
FIG. 18 is a perspective view of a pump chamber mechanism of a liquid pump according to the present invention; -
FIG. 19 is a perspective view of a pump chamber mechanism of a liquid pump according to the present invention; -
FIG. 19a is a cross-sectional view of a pump chamber mechanism of a liquid pump according to the present invention; -
FIG. 19b is a cross-sectional view of a pump chamber mechanism of a liquid pump according to the present invention; -
FIG. 20 is a perspective view of a lower cover of a liquid pump according to the present invention; -
FIG. 20a is a perspective view of a lower cover of a liquid pump according to the present invention; -
FIG. 21 is a perspective view of a connecting rod, a runner, and a magnet of a liquid pump according to the present invention; -
FIG. 22 is a perspective view of a connecting rod, a runner, and a magnet of a liquid pump according to the present invention; -
FIG. 22a is a cross-sectional view of a runner of a liquid pump according to the present invention; -
FIG. 23 is a perspective view of a casing, a motor, and a Hall sensor of a liquid pump according to the present invention; -
FIG. 24a is a perspective view of a casing of a liquid pump according to the present invention; and -
FIG. 24b is a perspective view of a casing of a liquid pump according to the present invention. - In the accompanying drawings: 100 upper cover; 1001 fluid inlet; 1002 fluid outlet; 101 middle cover; 1011 inlet channel; 1011 a inlet sink; 1011 b inlet hole; 1011 c umbrella valve positioning hole; 1012 outlet channel; 1012 a outlet hole; 1012 b limited rob; 1013 plug slot; 1014 plug positioning column; 102 lower cover; 1021 lower cover plate; 1022 lower cover side wall; 1023 through grooves; 1024 holding part; 1025 positioning groove; 103 casing; 1031 socket part; 1032 button hole; 1033 collision strip; 1034 limit clamping block; 1035 first plate; 1036 second plate; 1037 third plate; 104 motor; 105 runner; 1051 magnet mounting column; 1052 shaft hole; 1052 a first shaft hole portion; 1052 b second shaft hole portion; 1053 inclined hole; 1053 a step structure; 1054 runner stepped portion; 106 magnet; 107 Hall sensor; 108 pump chamber mechanism; 1081 mounting part; 1081 a positioning part; 1082 connecting part; 1083 squeezing part; 1084 extending part; 1085 limiting part; 109 plug; 1091 plug sealing surface; 1092 plug positioning block; 1093 triangular fixing hole; 1094 reinforced support sections; 110 umbrella valve; 1101 umbrella valve sealing surface; 1102 umbrella valve support part; 1103 umbrella valve connecting section; 1104 spherical fixing section; 111 impeller; 1111 annular structure; 1112 impeller connecting part; 1113 impeller body; 1114 measurement slot; 112 connecting rod; 113 seal ring; 1131 avoiding slot; 1132 avoiding slot; 1133 avoiding slot.
- The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” or “includes” and/or “including” or “has” and/or “having” when used herein, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.
- Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
- As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.
- As used herein, the term “plurality” means a number greater than one.
- Hereinafter, certain exemplary embodiments according to the present disclosure will be described with reference to the accompanying drawings.
- Referring to
FIGS. 1 to 24 b, a preferred embodiment of a liquid pump is provided, comprising anupper cover 100, amiddle cover 101, and alower cover 102 sealingly connected to one another from top to bottom, and further comprising: acasing 103, arranged at a lower end of thelower cover 102, asocket portion 1031 being formed on an outer peripheral wall of thecasing 103, an accommodating cavity being formed inside thesocket portion 1031, one end of the accommodating cavity being provided with an opening, and the other end of the accommodating cavity being provided with abutton hole 1032. - Preferably, a
middle cover 101, and alower cover 102, and thecasing 103 are fixedly connected by means of a plurality of screws located at an outer edge thereof. Theupper cover 100 is removably connected to themiddle cover 101 by means of a plurality of buckles located at an outer edge thereof. - A
seal ring 113 is provided between theupper cover 101 and thelower cover 102, and an outer edge of theseal ring 113 preferably has a plurality of avoidingslots 1131 to avoid the screws. - Preferably, the
casing 103 also has a fixing structure for fixing the entire liquid pump to other mechanisms/devices. The fixing structure comprises: a triangularfirst plate 1035 which is radially arranged, asecond plate 1036 vertically connected to thefirst plate 1035, and at least onethird plate 1037 for connecting thefirst plate 1035 and thesecond plate 1036 for reinforcement. A fixing hole or a threaded hole is formed in thesecond plate 1036. - Preferably, when the
casing 103 is assembled, thethird plate 1037 abuts against or is fixed to an outer wall of themotor 104 with respect to the other side of thefirst plate 1035. - Furthermore, as a preferred embodiment, a
motor 104, arunner 105, and amagnet 106, a motor shaft of themotor 104 passes through a lower end of thecasing 103 and extends to an interior of thecasing 103 and is fixedly connected to therunner 105, wherein, an outer peripheral wall of therunner 105 includes two first planes parallel to each other, twomagnet mounting columns 1051 are disposed on each of the two first planes. Preferably, the twomagnet mounting columns 1051 are hollow cylindrical structures. Axes of the twomagnet mounting columns 1051 are preferably arranged perpendicular to the axis of thecasing 103. The twomagnet mounting columns 1051 are symmetrically disposed. Each of themagnet mounting columns 1051 is provided with amagnet 106 therein, and the twomagnets 106 have different magnetic poles. Themotor 104 rotates periodically to drive therunner 105, so as to cause a periodic change in the magnetic pole. - Furthermore, as a preferred embodiment, the liquid pump further comprises: a
Hall sensor 107 disposed inside the accommodating cavity, wherein theHall sensor 107 has abuckle 1071 matching thebutton hole 1032, and theHall sensor 107 monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of themotor 104. - Furthermore, as a preferred embodiment, inner walls on both sides of the accommodating cavity are respectively provided with
collision strips 1033, two sides of theHall sensor 107 abut against the collision strips 1033 respectively. The collision strips 1033 limits the position of theHall sensor 107. - Furthermore, as a preferred embodiment, an inner wall of the accommodating cavity, which is closer to the cylindrical portion of the
casing 103, is provided with alimit clamping block 1034, thelimit clamping block 1034 extends from one end of the accommodating cavity to the other end thereof. The collision strips 1033 limits the position of theHall sensor 107. - Furthermore, as a preferred embodiment, the
upper cover 100 is provided with afluid inlet 1001 and afluid outlet 1002. - Furthermore, as a preferred embodiment, the
middle cover 101 is provided with threeinlet channels 1011 and threeoutlet channels 1012, all the threeinlet channels 1011 communicate with thefluid inlet 1001, all the threeoutlet channels 1012 communicate with thefluid outlet 1002. - Furthermore, as a preferred embodiment, the three
outlet channels 1012 are arranged at the center of themiddle cover 101, and the threeinlet channels 1011 are arranged about a periphery of the threeoutlet channels 1012. - Preferably, the
seal ring 113 has an avoidingslot 1132 for avoiding theinlet channels 1011 and avoidingslots 1133 for theoutlet channels 1012. Wherein, the avoidingslot 1132 located at a center of theseal ring 113, and the avoidingslot 1132 is circular; the avoidingslots 1133 are disposed around the avoidingslot 1132, and they are crescent-shaped. - Furthermore, as a preferred embodiment, the liquid pump further comprises: a
pump chamber mechanism 108, wherein thepump chamber mechanism 108 is disposed between themiddle cover 101 and thecasing 103, thepump chamber mechanism 108 comprises, which are arranged from top to bottom, a mountingpart 1081, a connectingpart 1082, a squeezingpart 1083, an extendingpart 1084, and aliming part 1085. - Furthermore, as a preferred embodiment, the mounting
part 1081 is arranged between themiddle cover 101 and thelower cover 103; the connectingpart 1082, the squeezingpart 1083, the extendingpart 1084, and the limitingpart 1085 are received inside thelower cover 102 and/or thecasing 103. - Furthermore, as a preferred embodiment, the connecting
part 1082 is a flexible part, the connectingpart 1082 has a hollow structure, the connectingpart 1082 deforms reciprocately along the direction of its axis to vary the volume periodically, so as to introduce the fluid from the fluid inlet into the connectingpart 1082 and/or discharging the fluid from the connecting part to thefluid outlet 1002. The movement of the squeezingpart 1083 in a horizontal direction shown inFIG. 19 makes the connectingpart 1082 deform, leading to the change of the volume of the connectingpart 1082. When the squeezingpart 1083 periodically moves back and forth in the horizontal direction shown inFIG. 19 , the connectingpart 1082 periodically changes the volume thereof accordingly. - Furthermore, as a preferred embodiment, the
pump chamber mechanism 108 comprises a mountingpart 1081 and three connectingparts 1082 connected with the mountingpart 1081, and each of the connectingparts 1082 is connected to a squeezingpart 1083, an extendingpart 1084, and a limitingpart 1085 in series. - Furthermore, as a preferred embodiment, each of the connecting
parts 1082 communicates with one of theinlet channels 1011 and one of theoutlet channels 1012 only, therefore, in each of the connectingparts 1082, fluid enters the connectingpart 1082 from aseparate inlet channel 1011, and discharges to the connectingpart 1082 from aseparate outlet channel 1012, that is, each of the connectingparts 1082 is configured for the entering and discharging the fluid without mutual interference. - Furthermore, as a preferred embodiment, the connecting
parts 1082 are cylindrical or bowl-shaped, and the squeezingpart 1083 is cylindrical. - Furthermore, as a preferred embodiment, the liquid pump further comprises a
plug 109, theplug 109 is arranged at a middle portion of an upper surface of themiddle cover 101, theplug 109 allows a one-way flow of the fluid from the connectingpart 1082 to theoutlet channel 1012. - Furthermore, as a preferred embodiment, a
plug slot 1013 is arranged at the middle portion of the upper surface of themiddle cover 101, theplug 109 is disposed inside theplug slot 1013, theoutlet channels 1012 are also disposed inside theplug slot 1012, a triangularplug positioning column 1014 is also disposed inside theplug slot 1013. - Furthermore, as a preferred embodiment, the
plug 109 comprises: aplug sealing surface 1091, theplug sealing surface 1091 is an arc-shaped surface, a concave side of theplug sealing surface 1091 is arranged opposite to the threeoutlet channels 1012. - Furthermore, as a preferred embodiment, the
plug 109 comprises: aplug positioning block 1092, theplug positioning block 1092 is triangular and is arranged in the middle of a convex side of theplug sealing surface 1091. - Furthermore, as a preferred embodiment, the
plug 109 comprises: atriangular fixing hole 1093, opening into an interior of theplug positioning block 1092 from the concave side of theplug sealing surface 1091, wherein thetriangular fixing hole 1093 matches theplug positioning column 1014. - Furthermore, as a preferred embodiment, the
plug 109 comprises: three reinforcedsupport sections 1094, wherein lower surfaces of the three reinforcedsupport sections 1094 are connected to the convex side of theplug sealing surface 1091, each of the reinforcessupport sections 1094 extends from an edge of theplug positioning block 1092 to an outer edge of the convex side of theplug sealing surface 1091. - Furthermore, as a preferred embodiment, the three reinforced
support sections 1094 divide theplug sealing surface 1091 into three plug sealing areas, and each of the plug sealing areas directly faces one of the threeoutlet channels 1012. - Specifically, when the connecting
part 1082 deforms due to the pushing force of the squeezingpart 1083, the volume of the connectingpart 1082 is reduced, the fluid in the connectingpart 1082 moves toward theoutlet channel 1012; theplug sealing surface 1091 is deformed due to the squeezing force, and theoutlet channel 1012 is exposed, so that the fluid is discharged out. - On the other hand, when the connecting
part 1082 deforms due to the pulling force of the squeezingpart 1083, the volume of the connectingpart 1082 is increased, negative pressure forms inside of the connectingpart 1082. Since theplug sealing surface 1091 is an arc-shaped surface, the corresponding plug sealing area of theplug sealing surface 1091 is absorbed on themiddle cover 102, theoutlet channel 1012 is blocked, so as to prevent the backflow of the fluid. Therefore, theplug 109 serves as the one-way valve. - Specifically, the structure of the
plug 109 allows theplus 109 to function as a one-way valve for the threeoutlet channels 1012. In the meantime, the structure of the plug sealing area allows the threeoutlet channels 1012 which function as one-way valves do not interfere with each other. - Furthermore, as a preferred embodiment, the liquid pump further comprises three
umbrella valves 110, wherein the threeumbrella valves 110 are arranged at a lower surface of themiddle cover 101 and arranged about the circumference of theplug 109, each of the connectingparts 1082 is provided with one of the threeumbrella valves 110, each of theumbrella valves 110 allows a one-way flow of the fluid from theinlet channel 1011 to the connectingpart 1082. - Furthermore, as a preferred embodiment, each of the
umbrella valves 110 comprises: an umbrellavalve sealing surface 1101, wherein the umbrellavalve sealing surface 1101 is an arc-shaped surface, a concave side of the umbrellavalve sealing surface 1101 directly faces the threeinlet channels 1011, a convex side of theumbrella valve 1101 sealing surface directly faces the connectingparts 1082. - Furthermore, as a preferred embodiment, each of the
umbrella valves 110 comprises: an umbrellavalve support part 1102, connected to the concave side of the umbrellavalve sealing surface 1101. - Furthermore, as a preferred embodiment, each of the
umbrella valves 110 comprises: an umbrellavalve connecting section 1103, connected to the umbrellavalve support part 1102. - Furthermore, as a preferred embodiment, each of the
umbrella valves 110 comprises: aspherical fixing section 1104, connected to the umbrellavalve connecting section 1103, and confining theumbrella valves 110 to themiddle cover 101 through the umbrellavalve support part 1102, the umbrellavalve connecting section 1103, and thespherical fixing section 1104. - Specifically, when the connecting
part 1082 deforms due to the pulling force of the squeezingpart 1083, the volume of the connectingpart 1082 is increased, negative pressure forms inside of the connectingpart 1082, the external fluid moves toward theinlet channel 1011. Since the umbrellavalve sealing surface 1101 is an arc-shaped structure, the fluid pushes out the umbrellavalve sealing surface 1101, then theinlet channel 1101 opens, the fluid enters into the connectingpart 1082, so that the fluid enters. On the other hand, when the connectingpart 1082 deforms due to the pressing force of the squeezingpart 1083, the volume of the connectingpart 1082 is reduced, the fluid presses the umbrellavalve sealing surface 1101 against theinlet channel 1011, theinlet channel 1011 is blocked, so as to prevent the backflow of the fluid. Therefore, theumbrella valve 110 serves as the one-way valve. - Furthermore, as a preferred embodiment, each of the
inlet channels 1101 comprises: a crescent-shapedinlet sink 1011 a, a plurality ofinlet holes 1011 b formed in theinlet sink 1011 a, an umbrellavalve positioning hole 1011 c formed in theinlet sink 1011 a. - Furthermore, as a preferred embodiment, the
umbrella connecting section 1103 is arranged inside the umbrellavalve positioning hole 1011 c, the umbrellavalve support part 1102 and thespherical fixing section 1104 are arranged at two sides of the umbrellavalve positioning hole 1011 c, respectively. - Furthermore, as a preferred embodiment, the plurality of
inlet holes 1011 b are formed around the umbrellavalve positioning hole 1011 c, and the umbrellavalve sealing surface 1101 covers the plurality ofinlet holes 1011 b. - Furthermore, as a preferred embodiment, each of the
outlet channels 1012 comprises: a waist-shapedoutlet hole 1012 a, and a limited rod 1012 b connecting inner walls of two sides of theoutlet hole 1012 a. The limited rod 1012 b is configured to prevent theplug sealing surface 1091 of the plug being sucked into theoutlet hole 1012 a. - In another preferred embodiment, the waist-shaped
outlet hole 1012 a is replaced by a small round hole. The small round hole can also prevent theplug sealing surface 1091 being sucked into the small round hole. However, in this case, the hole diameter of the outlet hole is smaller than that of the waist-shapedoutlet hole 1012 a. - Furthermore, as a preferred embodiment, preferably, the
inlet channel 1011 and theoutlet channel 1012 integrally form a substantially round structure to match the shape of the connectingpart 1082. In this way, aninlet channel 1011 and anoutlet channel 1012 are configured for each of the connectingparts 1082 while the internal space of the liquid pump is saved as much as possible. - Furthermore, as a preferred embodiment, the
lower cover 102 comprises: alower cover plate 1021, and a lowercover side wall 1022 connected to an outer edge of thelower cover plate 1021, wherein three throughgrooves 1023 are formed on thelower cover plate 1021 for receiving at least the connectingparts 1082, each of the throughgrooves 1023 is provided with one of the connectingparts 1082. - Furthermore, as a preferred embodiment, a lower surface of the
lower cover plate 1021 extends downwardly from an outer edge of the throughgrooves 1023 to form a holdingpart 1024 for protecting the connectingparts 1082. - Furthermore, as a preferred embodiment, a lower surface of the mounting
part 1081 has apositioning part 1081 a, and an upper surface of thelower cover plate 1021 is provided with apositioning groove 1025 matching thepositioning part 1081 a. - Furthermore, as a preferred embodiment, the liquid pump further comprises an
impeller 111, theimpeller 111 has an inclined surface, that is, a left surface of theimpeller 111 shown inFIG. 16 . An angel is formed between the inclined surface and a plane where the mountingpart 1081 is located, theimpeller 111 rotates around an axis of the motor shaft to cause the connectingpart 1082 to deform reciprocately along a direction of its axis. - Furthermore, as a preferred embodiment, three
annular structures 1111 are arranged at an outer edge of theimpeller 111, each of theannular structures 1111 is sleeved on the extendingpart 1084, and theannular structures 1111 are defined between the squeezingpart 1083 and the limitingpart 1085. - Specifically, the
impeller 111 comprises: animpeller connecting part 1112, animpeller body 1113 and the above-mentionedannular structures 1111 arranged at an outer edge of theimpeller body 1113. A connectingrod slot 1115 is formed in theimpeller connecting part 1112 for connecting to the connectingrod 112 as described below. Preferably, theimpeller body 1113 is substantially triangular. Theannular structures 1111 are respectively arranged at three corners of theimpeller body 1113. - Preferably, a
measuring slot 1114 is formed at a center of theimpeller body 1113. Themeasuring slot 1114 communicates with the connectingrod slot 1115. Themeasuring slot 1114 is coaxial with the connectingrod slot 1115, so as to facilitate the measurement of the distance between the connectingrod 112 and theannular structures 1111. - Furthermore, as a preferred embodiment, the
impeller 111 rotates around the axis of the motor shaft to cause the threeannular structures 1111 to displace reciprocately along a direction of the axis, and thus to cause the connectingpart 1082 to deform reciprocately along a direction of its axis. - Specifically, since the
impeller 111 is inclined, when rotating or eccentrically rotating around a horizontal axis shown inFIG. 16 , theimpeller 111 is capable of transforming the rotation or eccentric rotation thereof into the movement of theannular structures 1111 in the horizontal direction shown inFIG. 16 , so as to generate the pushing force on the squeezingpart 1083 or to generate pulling force on the limitingpart 1085, thereby reducing or expanding the volume of the connectingpart 1082. - Furthermore, as a preferred embodiment, the liquid pump further comprises a connecting
rod 112 connecting therunner 105 and theimpeller 111, an axis of the connectingrod 112 form an angle with respect to an axis of the motor shaft. - Furthermore, as a preferred embodiment, an upper end of the connecting
rod 112 is close to the axis of the motor shaft, and a lower end of the connectingrod 112 is away from the axis of the motor shaft. - The above descriptions are only the preferred embodiments of the invention, not thus limiting the embodiments and scope of the invention.
- The invention can also be embodied in the following embodiments apart from the above-mentioned embodiments:
- In a further embodiment of the present invention, referring to
FIGS. 1 to 24 b, ashaft hole 1052 is formed in therunner 105 along a direction of its axis, the motor shaft is arranged inside theshaft hole 1052; aninclined hole 1053 is formed in therunner 105, the connectingrod 112 is arranged inside theinclined hole 1053, an axis of theinclined hole 1053 form an angle with respect to an axis of theshaft hole 1052. - In a further embodiment of the present invention, the
inclined hole 1053 is a blind hole, and theinclined hole 1053 forms astep structure 1053 a at a surface of the runner. Thestep structure 1053 a is arranged such that the abrasion can be prevented. - Specifically, the
step structure 1053 a comprises: a step expanding portion having a diameter greater than that of theinclined hole 1053, and a step connecting portion having a diameter gradually decreasing toward theinclined hole 1053. One end of the step connecting portion, with a larger diameter, has a diameter equal to that of the step expanding portion, and the other end of the step connecting portion, with a smaller diameter, has a diameter equal to that of theinclined hole 1053. - In a further embodiment of the present invention, two opposite
magnet mounting columns 1051 are arranged on two sides of therunner 105 along a direction of its axis, each of themagnet mounting columns 1051 is provided with amagnet 106 therein, and themagnet 106 rotates periodically with therunner 105, so as to cause a periodic change in the magnetic pole. - In a further embodiment of the present invention, the
shaft hole 1052 comprises a firstshaft hole portion 1052 a for receiving the motor shaft, and a secondshaft hole portion 1052 b communicating with the firstshaft hole portion 1052 a and passing through a surface of therunner 105, wherein an internal diameter of the firstshaft hole potion 1052 a is greater than that of the secondshaft hole portion 1052 b, and the firstshaft hole portion 1052 a is coaxial with the secondshaft hole portion 1052 b. - Specifically, the second
shaft hole portion 1052 b is not necessarily for the accommodation or installation of the motor shaft. The secondshaft hole portion 1052 b is arranged to facilitate the measurement of a distance between the motor shaft and theinclined hole 1053, so as to achieve the precise control of the movement of the liquid pump. - In a further embodiment of the present invention, a surface of the
runner 105, which is away from themotor 104, extends outwardly to form a steppedportion 1054 of the runner. The steppedportion 1054 of the runner is disposed such that theentire runner 105 can be easily detached integrally. - In a further embodiment of the present invention, a working method of the liquid pump is provided, wherein the liquid pump comprises: an
upper cover 100, amiddle cover 101, alower cover 102 and acasing 103 connected to one another from top to bottom, the liquid pump further comprises amotor 104, arunner 105, amagnet 106, and aHall sensor 107, a motor shaft of themotor 104 passes through thecasing 103 and is fixedly connected to therunner 105 inside thecasing 103, themagnets 106 are arranged on two sides of therunner 105 respectively, theHall sensor 107 monitors themagnet 106. - The
upper cover 100 is provided with afluid inlet 1001 and afluid outlet 1002; themiddle cover 101 is provided with at least oneinlet channel 1011 and at least oneoutlet channel 1012, theinlet channel 1011 communicates with thefluid inlet 1001, and theoutlet channel 1012 communicates with thefluid outlet 1002. - In the method, the liquid pump further comprises a leather cup (i.e., the pump chamber mechanism 108), the leather cup communicates with the
inlet channel 1011 and theoutlet channel 1012, a first one-way valve (i.e., the umbrella valve 110) is provided between theinlet channel 1011 and the leather cup, a second one-way valve (i.e., the plug 109) is provided between the leather cup and theoutlet channel 1012; - in the method, the liquid pump further comprises an
impeller 111, theimpeller 111 is connected to therunner 105, an upper surface of theimpeller 111 is an inclined surface, an outer edge of theimpeller 111 is connected to the leather cup through a connection point; - the working method comprises:
- the
motor 104 drives therunner 105 to rotate, therunner 105 drives theimpeller 111 to rotate around the axis of the motor shaft of themotor 104, by the inclined surface of theimpeller 111 the rotation of the is converted into a reciprocating motion of the connection point to drive the leather cup to deform reciprocately, the leather cup is configured for introducing the fluid 1001 from thefluid inlet 1001 into the leather cup and/or discharging the fluid from the leather cup to thefluid outlet 1002 by periodical varying of the volume of the leather cup; - the
magnet 106 rotates with therunner 105 so as to cause a periodic change in the magnetic pole, theHall sensor 107 monitors the periodic change of the magnetic pole to generate a pulse signal matching the rotation number of themotor 104; - the flow rate of the liquid pump is controlled by inputting instructions to the
motor 104 and by obtaining the number of cycles of the pulse signal. - The above descriptions are only the preferred embodiments of the invention, not thus limiting the embodiments and scope of the invention. Those skilled in the art should be able to realize that the schemes obtained from the content of specification and drawings of the invention are within the scope of the invention.
Claims (20)
1. A liquid pump, comprising: a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet being respectively communicate with the pump chamber, the pump chamber being configured for introducing the fluid from the fluid inlet into the pump chamber and/or discharging the fluid from the pump chamber to the fluid outlet by periodical varying of volume of the pump chamber;
further comprising: a driving mechanism, the driving mechanism driving the pump chamber to vary the volume of the pump chamber periodically by periodical rotating of the driving mechanism;
further comprising:
a runner, the runner being driven by the driving mechanism and rotating periodically therewith, the periodical rotation of the runner causing a magnetic pole arranged thereon to change periodically; and
a Hall sensor, monitoring the periodic change of the magnetic pole to generate a signal matching the rotation number of the driving mechanism.
2. The liquid pump of claim 1 , wherein at least a part of the pump chamber is made of a flexible component, the flexible component deforms reciprocately along a direction of its axis to vary the volume periodically;
the liquid pump further comprises a transmission component, the driving mechanism drives the transmission component to rotate, the transmission component has an inclined surface, an angle is formed between the inclined surface and a radial surface of the flexible component, and the inclined surface rotates about the axis so that the flexible component deforms reciprocately along the direction of its axis.
3. The liquid pump of claim 2 , wherein the driving mechanism is a motor, a motor shaft of the motor is fixedly connected to the runner;
the liquid pump further comprises a connecting rod for connecting the runner and the transmission component, an axis of the connecting rod form an angle with respect to an axis of the motor shaft.
4. The liquid pump of claim 3 , wherein a shaft hole is formed in the runner along the direction of its axis, the motor shaft is arranged inside the shaft hole; an inclined hole is formed in the runner, the connecting rod is arranged inside the inclined hole, an axis of the inclined hole form an angle with respect to an axis of the motor shaft;
wherein, the inclined hole is a blind hole, and the inclined hole forms a step structure at a surface of the runner.
5. The liquid pump of claim 3 , wherein two opposite magnet mounting columns are arranged on two sides of the runner along the direction of its axis, each of the magnet mounting columns is provided with a magnet therein, and the magnet rotates periodically with the runner, so as to cause a periodic change in the magnetic pole.
6. The liquid pump of claim 4 , wherein the shaft hole comprises a first shaft hole portion for receiving the motor shaft, and a second shaft hole portion communicating with the first shaft hole portion and passing through a surface of the runner, wherein an internal diameter of the first shaft hole potion is greater than that of the second shaft hole portion, and the first shaft hole portion is coaxial with the second shaft hole portion.
7. The liquid pump of claim 1 , wherein a surface of the runner, which is away from the driving mechanism, extends outwardly to form a stepped portion of the runner.
8. A liquid pump, comprising: an upper cover, a middle cover, and a lower cover sealingly connected to one another from top to bottom, and
further comprising: a casing, arranged at a lower end of the lower cover, a socket portion being formed on an outer peripheral wall of the casing, an accommodating cavity being formed inside the socket portion, one end of the accommodating cavity being provided with an opening, and the other end of the accommodating cavity being provided with a button hole;
a motor, a runner, and a magnet, a motor shaft of the motor passing through a lower end of the casing and extending to an interior of the casing and being fixedly connected to the runner, wherein, an outer peripheral wall of the runner includes two first planes parallel to each other, two magnet mounting columns are symmetrically disposed on each of the two first planes, each of the magnet mounting columns is provided with the magnet therein, the motor rotates periodically to drive the runner, so as to cause a periodic change in the magnetic pole;
a Hall sensor disposed inside the accommodating cavity, wherein the Hall sensor has a buckle matching the button hole, and the Hall sensor monitors the periodic change of the magnetic pole to generate a signal matching the rotation number of the motor.
9. The liquid pump of claim 6 , wherein inner walls on both sides of the accommodating cavity are respectively provided with collision strips, two sides of the Hall sensor abut against the collision strips;
an inner wall of the accommodating cavity, which is closer to the casing, is provided with a limit clamping block, the limit clamping block extends from one end of the accommodating cavity to the other end thereof.
10. The liquid pump of claim 6 , wherein the upper cover is provided with a fluid inlet and a fluid outlet;
the middle cover is provided with three inlet channels and three outlet channels, all the three inlet channels communicate with the fluid inlet, all the three outlet channels communicate with the fluid outlet;
the three outlet channels are arranged at the center of the middle cover, and the three inlet channels are arranged about a periphery of the three outlet channels.
11. The liquid pump of claim 10 , further comprising: a pump chamber mechanism, wherein the pump chamber mechanism is disposed between the middle cover and the casing, the pump chamber mechanism comprises, which are arranged from top to bottom, a mounting part, a connecting part, a squeezing part, an extending part, and a liming part;
the mounting part is arranged between the middle cover and the lower cover; the connecting part, the squeezing par, the extending part, and the limiting part are received inside the lower cover and/or the casing;
the connecting part is a flexible part, the connecting part has a hollow structure, the connecting part deforms reciprocately along the direction of its axis to vary the volume periodically, so as to introduce the fluid from the fluid inlet into the connecting part and/or discharging the fluid from the connecting part to the fluid outlet.
12. The liquid pump of claim 11 , wherein the pump chamber mechanism comprises the mounting part and three connecting parts connected with the mounting part, and each of the connecting parts is connected to a squeezing part, an extending part, and a limiting part in series;
each of the connecting parts communicates with one of the inlet channels and one of the outlet channels only; and
the connecting parts are cylindrical or bowl-shaped, the squeezing part is cylindrical.
13. The liquid pump of claim 12 , further comprising: a plug, the plug being arranged at a middle portion of an upper surface of the middle cover, the plug allows a one-way flow of the fluid from the connecting part to the outlet channel;
a plug slot is arranged at the middle portion of the upper surface of the middle cover, the plug is disposed inside the plug slot, the outlet channels are also disposed inside the plug slot, a triangular plug positioning column is also disposed inside the plug slot;
the plug comprises:
a plug sealing surface, the plug sealing surface is an arc-shaped surface, a concave side of the plug sealing surface is arranged opposite to the three outlet channels;
a plug positioning block, the plug positioning block being triangular and arranged in the middle of a convex side of the plug sealing surface;
a triangular fixing hole, opening into an interior of the plug positioning block from the concave side of the plug sealing surface, wherein the triangular fixing hole matches the plug positioning column;
three reinforces support sections, wherein lower surfaces of the three reinforced support sections are connected to the convex side of the plug sealing surface, each of the reinforces support sections extends from an edge of the plug positioning block to an outer edge of the convex side of the plug sealing surface;
the three reinforced support sections divide the plug sealing surface into three plug sealing areas, and each of the plug sealing areas directly faces one of the three outlet channels.
14. The liquid pump of claim 13 , further comprising: three umbrella valves, wherein the three umbrellas valves are arranged at a lower surface of the middle cover and arranged about the circumference of the plug, each of the connecting parts is provided with one of the three umbrella valves, each of the umbrella valves allows a one-way flow of the fluid from the inlet channel to the connecting part;
each of the umbrella valves comprises:
an umbrella valve sealing surface, wherein the umbrella valve sealing surface is an arc-shaped surface, a concave side of the umbrella valve sealing surface directly faces the three inlet channels, a convex side of the umbrella valve sealing surface directly faces the connecting parts;
an umbrella valve support part, connected to the concave side of the umbrella valve sealing surface;
an umbrella valve connecting section, connected to the umbrella valve support part; and
a spherical fixing section, connected to the umbrella valve connecting section, and confining the umbrella valves to the middle cover through the umbrella valve support part, the umbrella valve connecting section, and the spherical fixing section.
15. The liquid pump of claim 14 , wherein each of the inlet channels comprises: a crescent-shaped inlet sink, a plurality of inlet holes formed in the inlet sink, an umbrella valve positioning hole formed in the inlet sink;
wherein, the umbrella connecting section is arranged inside the umbrella valve positioning hole, the umbrella valve support part and the spherical fixing section are arranged at two sides of the umbrella valve positioning hole, respectively;
the plurality of inlet holes are formed around the umbrella valve positioning hole, and the umbrella valve sealing surface covers the plurality of inlet holes.
16. The liquid pump of claim 15 , wherein each of the outlet channels comprises: a waist-shaped outlet hole, and a limited rod connecting inner walls of two sides of the outlet hole.
17. The liquid pump of claim 11 , wherein the middle cover comprises: a lower cover plate, and a lower cover side wall connected to an outer edge of the lower cover plate, wherein three through grooves are formed on the lower cover plate for receiving at least the connecting parts, each of the through grooves is provided with one of the connecting parts;
a lower surface of the lower cover plate extends downwardly from an outer edge of the through grooves to form a holding part for protecting the connecting parts;
a lower surface of the mounting part has a positioning part, and an upper surface of the lower cover plate is provided with a positioning groove matching the positioning part.
18. The liquid pump of claim 11 , further comprising: an impeller, the impeller having an inclined plane, an angel is formed between the inclined plane and a plane where the mounting part is located, the impeller rotates around an axis of the motor shaft to cause the connecting part to deform reciprocately along a direction of its axis;
three annular structures are arranged at an outer edge of the impeller, each of the annular structures is sleeved on the extending part, and the annular structures are defined between the squeezing part and the limiting part;
the impeller rotates about the axis of the motor shaft to cause the three annular structures to displace reciprocately along a direction of the axis, to cause the connecting part to deform reciprocately along a direction of its axis.
19. The liquid pump of claim 18 , further comprising: a connecting rod connecting the runner and the impeller, an angle being formed between an axis of the connecting rod and the axis of the motor shaft;
wherein, an upper end of the connecting rod is close to the axis of the motor shaft, and a lower end of the connecting rod is away from the axis of the motor shaft.
20. A working method of the liquid pump, wherein the liquid pump comprises: an upper cover, a middle cover, and a lower cover which are connected to one another from top to bottom, the liquid pump further comprises a motor, a runner, a magnet, and a Hall sensor, a motor shaft of the motor passes through the casing and is fixedly connected to the runner inside the casing, the magnets are arranged respectively on two sides of the runner, the Hall sensor monitors the magnet;
the upper cover is provided with a fluid inlet and a fluid outlet; the middle cover is provided with at least one inlet channel and at least one outlet channel, the inlet channel communicates with the fluid inlet, and the outlet channel communicates with the fluid outlet;
the liquid pump further comprises a leather cup, the leather cup communicates with the inlet channel and the outlet channel, a first one-way valve is provided between the inlet channel and the leather cup, a second one-way valve is provided between the leather cup and the outlet channel;
the liquid pump further comprises an impeller, the impeller is connected to the runner, an upper surface of the impeller is an inclined surface, an outer edge of the impeller is connected to the leather cup through a connection point;
the working method comprises:
the motor drives the runner to rotate, the runner drives the impeller to rotate about the axis of the motor shaft of the motor, the rotation of the impeller is converted into a reciprocating motion of the connection point to drive the leather cup to deform reciprocately, the leather cup is configured for introducing the fluid from the fluid inlet into the leather cup and/or discharging the fluid from the leather cup to the fluid outlet by periodical varying of the volume of the leather cup;
the magnet rotates with the runner so as to cause a periodic change in the magnetic pole, the Hall sensor monitors the periodic change of the magnetic pole to generate a pulse signal matching the rotation number of the motor;
the flow rate of the liquid pump is controlled by inputting instructions to the motor and by obtaining the number of cycles of the pulse signal.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN202010352154.2 | 2020-04-28 | ||
CN202010352154.2A CN111734611A (en) | 2020-04-28 | 2020-04-28 | Flow-controllable liquid pump and working method thereof |
Publications (1)
Publication Number | Publication Date |
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US20210332822A1 true US20210332822A1 (en) | 2021-10-28 |
Family
ID=72646871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US16/931,851 Abandoned US20210332822A1 (en) | 2020-04-28 | 2020-07-17 | Flow controllable liquid pump and working method thereof |
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US (1) | US20210332822A1 (en) |
CN (1) | CN111734611A (en) |
Families Citing this family (1)
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CN114962225A (en) * | 2022-05-17 | 2022-08-30 | 宁波捷尔天电气有限公司 | Small-size high pressure diaphragm pump |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US16373A (en) * | 1857-01-13 | btjrnham | ||
US5501110A (en) * | 1992-06-26 | 1996-03-26 | The Torrington Company | Torsion measuring device for a rotating shaft |
US7520720B2 (en) * | 2004-07-28 | 2009-04-21 | Sta-Rite Industries, Llc | Pump |
US20110274566A1 (en) * | 2009-02-12 | 2011-11-10 | The Board Of Trustees Of The University Of Illinois | Magnetically driven micropump |
US20130034452A1 (en) * | 2011-08-04 | 2013-02-07 | Kazuki Itahara | Diaphragm pump |
US9739271B2 (en) * | 2013-10-24 | 2017-08-22 | Koge Electronics Co., Ltd | Automatic depressurizing pump |
US10260494B2 (en) * | 2014-10-20 | 2019-04-16 | Ying Lin Cai | Eccentric roundel structure for three-compressing-chamber diaphragm pump |
US20190376497A1 (en) * | 2017-03-24 | 2019-12-12 | Hanon Systems | Compressor |
-
2020
- 2020-04-28 CN CN202010352154.2A patent/CN111734611A/en active Pending
- 2020-07-17 US US16/931,851 patent/US20210332822A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US16373A (en) * | 1857-01-13 | btjrnham | ||
US5501110A (en) * | 1992-06-26 | 1996-03-26 | The Torrington Company | Torsion measuring device for a rotating shaft |
US7520720B2 (en) * | 2004-07-28 | 2009-04-21 | Sta-Rite Industries, Llc | Pump |
US20110274566A1 (en) * | 2009-02-12 | 2011-11-10 | The Board Of Trustees Of The University Of Illinois | Magnetically driven micropump |
US20130034452A1 (en) * | 2011-08-04 | 2013-02-07 | Kazuki Itahara | Diaphragm pump |
US9739271B2 (en) * | 2013-10-24 | 2017-08-22 | Koge Electronics Co., Ltd | Automatic depressurizing pump |
US10260494B2 (en) * | 2014-10-20 | 2019-04-16 | Ying Lin Cai | Eccentric roundel structure for three-compressing-chamber diaphragm pump |
US20190376497A1 (en) * | 2017-03-24 | 2019-12-12 | Hanon Systems | Compressor |
Also Published As
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CN111734611A (en) | 2020-10-02 |
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