CN213235392U

CN213235392U - Flow-controllable liquid pump

Info

Publication number: CN213235392U
Application number: CN202020677175.7U
Authority: CN
Inventors: 刘光跃; 王天龙; 邵军钰; 高立
Original assignee: NINGBO JLT ELECTRIC CO Ltd
Current assignee: NINGBO JLT ELECTRIC CO Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-05-18
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a controllable type liquid pump of flow, include: a fluid inlet, a fluid outlet and a pump chamber, the fluid inlet and the fluid outlet being in communication with the pump chamber, respectively, the pump chamber introducing fluid from the fluid inlet into the pump chamber and/or discharging fluid from the pump chamber from the fluid outlet by a periodic volume change; the liquid pump further includes: a drive mechanism that drives the pump chamber by periodic rotation to perform periodic volume change; the runner is driven by the driving mechanism and rotates periodically along with the driving mechanism, and the periodic rotation of the runner causes the periodic change of the magnetic poles arranged on the runner; the hall sensor monitors the periodic change in the magnetic pole to generate a signal that matches the rotation of the drive mechanism. The utility model discloses a rotational speed of the cooperation monitoring motor of hall sensor and magnet to accurate flow control is realized to the control motor.

Description

Flow-controllable liquid pump

Technical Field

The utility model relates to a technical field of pump especially relates to a liquid pump.

Background

The diaphragm type miniature water pump is characterized by that it uses motor to provide circular motion, and utilizes a mechanical device to make the diaphragm (diaphragm form is lots) in the interior of water pump implement reciprocating motion so as to compress and stretch the air in the pump cavity, under the action of one-way valve plate a pressure difference is produced between water outlet or water inlet and external atmospheric pressure, and under the action of pressure difference the water is pressed into water inlet, and then discharged from water outlet. The miniature water pump is well applied to occasions such as small household appliances, medical appliances and the like, but the existing miniature water pump is generally difficult to achieve accurate regulation of flow.

Although the flow control of the water pump has been studied by the manufacturers, a micro water pump capable of accurately controlling the flow is developed, which comprises an upper cover, a valve seat, a water bag seat, a base shell, a water bag, a curved rod, a driving shaft, an eccentric wheel, a motor and an output circuit board: the motor is arranged on the base shell, a motor shaft of the motor extends into the base shell and then is directly connected with an eccentric wheel in the base shell, the eccentric wheel is connected with a curved bar through a driving shaft, a bracket at the upper end of the curved bar, which is outwards radial, is provided with a water bag, the water bag is arranged on a water bag seat, the water bag seat is arranged on the base shell in a sealing way, a valve seat is arranged on the water bag seat in a sealing way, a water inlet hole and a water outlet hole are arranged on the valve seat corresponding to each water bag, and a one-way valve is respectively; the upper cover is hermetically arranged on the valve seat, the upper cover forms a water outlet interface and a water inlet interface, the water inlet interface is communicated with each water inlet hole, and the water outlet interface is communicated with each water outlet hole. When the water pump works, the motor drives the eccentric wheel to be transmitted to the curved rod through the driving shaft, and then the water sac is driven to realize water inlet and outlet. Further, a photoelectric shielding sheet is formed on the eccentric wheel or the motor shaft in the radial direction corresponding to the photoelectric switch, the photoelectric shielding sheet is matched with the photoelectric switch to detect the motor rotating speed, the photoelectric switch is electrically connected with an output circuit board, and the output circuit board is used for being electrically connected with an external motor controller and sending motor rotating speed information to the external motor controller; when the water pump works, the rotating speed of the motor is detected through the photoelectric switch, the output circuit board sends the rotating speed to the motor controller outside, so that the motor controller can accurately control the rotating speed of the motor, and stable water flow under different back pressures with different amounts is obtained.

The photoelectric switch has the advantages of long detection distance, less limitation on a detected object and short response time, and can realize non-contact detection. However, the unclosed photodetection switch is very susceptible to contamination, which affects the accurate detection of the flow.

In addition, the conventional micro-fluid pump is fixed between the upper cover and the middle cover with only three screws. Therefore, although the upper cover and the middle cover press the gasket between the upper cover and the middle cover at the position where the screws are installed, the gasket is easily bulged at the position between the screws due to the reduction of the pressure of the screws, resulting in a less tight seal of the liquid pump.

In addition, the flow control device of the traditional liquid pump capable of controlling the flow is arranged in the shell of the pump body, and when the flow control device is polluted and needs to be cleaned, or when the flow control device needs to be maintained, only the pump shell is disassembled, and other structures in the pump shell are damaged easily.

Aiming at the problems that the liquid pump photoelectric switch has poor anti-pollution capacity and the flow control device is not easy to replace, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a flow rate controllable liquid pump.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

a liquid pump, comprising: a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet communicating with the pump chamber, respectively, the pump chamber introducing fluid from the fluid inlet into the pump chamber and/or discharging fluid from the pump chamber from the fluid outlet by a periodic volume change;

the liquid pump further includes: a drive mechanism that drives the pump chamber by periodic rotation to perform periodic volume change;

it is characterized by also comprising:

a runner that is driven by the drive mechanism and that periodically rotates in accordance with the drive mechanism, the periodic rotation of the runner causing periodic changes in magnetic poles provided on the runner;

a Hall sensor that monitors the periodic variation of the magnetic poles to generate a signal that matches the number of revolutions of the drive mechanism.

The liquid pump described above, wherein at least a part of the pump chamber is formed by a flexible member that is reciprocally deformed in an axial direction thereof to effect a periodic volume change;

further comprising: the driving mechanism drives the transmission component to rotate, the transmission component is provided with an inclined plane, an included angle is formed between the inclined plane and the radial surface of the flexible component, and the flexible component is caused to deform in a reciprocating mode along the axial direction of the flexible component through the rotation of the inclined plane around the axial direction.

In the above liquid pump, the driving mechanism is a motor, and a motor shaft of the motor is fixedly connected to the rotating wheel;

further comprising: the connecting rod is connected with the rotating wheel and the transmission part, and an included angle is formed between the axis of the connecting rod and the axis of the motor shaft.

In the above liquid pump, the rotating wheel is provided with a shaft hole along an axial direction thereof, and the motor shaft is arranged in the shaft hole; the rotating wheel is provided with an inclined hole, the connecting rod is arranged in the inclined hole, and an included angle is formed between the axis of the inclined hole and the axis of the shaft hole;

the inclined hole is a blind hole, and a step structure is formed on the surface of the rotating wheel by the inclined hole.

In the above liquid pump, two opposite magnet mounting posts are arranged on two sides of the rotating wheel along the radial direction, a magnet is arranged inside each magnet mounting post, and the rotating wheel drives the magnet to rotate periodically to cause the periodic change of the magnetic poles.

The liquid pump described above, wherein the shaft hole includes: the shaft structure comprises a first shaft hole part used for accommodating the motor shaft and a second shaft hole part communicated with the first shaft hole part and penetrating to the surface of the rotating wheel, wherein the inner diameter of the first shaft hole part is larger than that of the second shaft hole part, and the first shaft hole part and the second shaft hole part are coaxially arranged.

In the above liquid pump, a surface of the side of the rotor away from the driving mechanism extends outward to form a rotor step.

A liquid pump, comprising: from last upper cover, well lid and the lower cover to sealing connection in proper order down, its characterized in that still includes:

the shell is arranged at the lower end of the lower cover, a socket part is formed on the outer peripheral wall of the shell, an accommodating cavity is formed inside the socket part, one end of the accommodating cavity is provided with an opening, and the other end of the accommodating cavity is provided with a buckling hole;

the motor shaft of the motor penetrates through the lower end of the shell, extends into the shell and is fixedly connected with the rotating wheel, wherein two first planes which are parallel to each other are arranged on the peripheral wall of the rotating wheel, two magnet mounting columns are respectively arranged on the two first planes and are symmetrically arranged, and one magnet is arranged in each magnet mounting column; the motor drives the runner through periodic rotation to cause periodic variation of magnetic poles;

the Hall sensor is arranged in the accommodating cavity and provided with a buckle matched with the buckle hole, and the Hall sensor monitors the periodic change of the magnetic pole to generate a signal matched with the rotation cycle number of the motor.

The above-described liquid pump, wherein,

the inner walls of the two sides of the accommodating cavity are respectively provided with a touch strip, and the two sides of the Hall sensor are respectively abutted with the touch strips;

the inner wall of the accommodating cavity close to one side of the shell is further provided with a limiting clamping block, and the limiting clamping block extends from one end of the accommodating cavity to the other end of the accommodating cavity.

The above-described 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, the three inlet channels are communicated with the fluid inlet, and the three outlet channels are communicated with the fluid outlet;

and the three outlet channels are arranged in the middle position of the middle cover, and the three inlet channels surround the peripheries of the three outlet channels.

The above liquid pump further includes: the pump chamber mechanism is arranged between the middle cover and the shell and comprises an installation part, a connecting part, an extrusion part, an extension part and a limiting part which are sequentially arranged from top to bottom;

the mounting part is arranged between the middle cover and the lower cover; the connecting part, the pressing part, the extending part and the limiting part are accommodated in the lower cover and/or the shell;

the connecting part is a flexible part and is of a hollow structure, and the connecting part is deformed in a reciprocating mode along the axial direction of the connecting part and carries out periodic volume change so as to introduce fluid into the connecting part from the fluid inlet and/or discharge the fluid from the fluid outlet from the connecting part.

In the above liquid pump, the pump chamber mechanism includes one mounting portion and three connecting portions connected to the mounting portion, and each connecting portion is sequentially connected to an extrusion portion, an extension portion, and a limiting portion;

wherein each of the connecting portions is in communication with and only communicates with one of the inlet passages and one of the outlet passages;

wherein, connecting portion are cylindrical or bowl shape, the extrusion portion is cylindrical.

The above liquid pump further includes: the plug is arranged in the middle of the upper surface of the middle cover and allows fluid to flow from the connecting part to the outlet channel in a unidirectional mode;

the middle part of the upper surface of the middle cover is provided with a plug groove, the plug is arranged in the plug groove, the outlet channel is also arranged in the plug groove, and the interior of the plug groove is also provided with a triangular plug positioning column;

the end cap comprises:

the plug sealing surface is an arc surface, and the concave surface of the plug sealing surface is arranged right opposite to the three outlet channels;

the plug positioning block is triangular and is arranged in the middle of the convex surface of the plug sealing surface;

the triangular fixing hole is formed from the concave surface of the plug sealing surface to the inside of the plug positioning block and is matched with the plug positioning column;

the lower surfaces of the three reinforcing support sections are connected with the convex surface of the plug sealing surface, and each reinforcing support section extends from one edge of the plug positioning block to the outer edge of the convex surface of the plug sealing surface;

and the reinforcing support section divides the plug sealing surface area into three plug sealing areas, and each plug sealing area is right opposite to one outlet channel.

The above liquid pump further includes: the three umbrella valves are arranged on the lower surface of the middle cover and surround the periphery of the plug, one umbrella valve is correspondingly arranged on each connecting part, and each umbrella valve allows fluid to flow from the inlet channel to the connecting part in a one-way manner;

each of the umbrella valves comprising:

the umbrella valve sealing surface is a cambered surface, the concave surface of the umbrella valve sealing surface is arranged right opposite to the three inlet channels, and the convex surface of the umbrella valve sealing surface is arranged right opposite to the connecting part;

the umbrella valve supporting part is connected with the concave surface of the umbrella valve sealing surface;

an umbrella valve connection section connected with the umbrella valve support part;

the spherical fixed section is connected with the umbrella valve connecting section, and the umbrella valve is limited on the middle cover by the umbrella valve supporting part, the umbrella valve connecting section and the spherical fixed section.

The liquid pump described above, wherein the inlet channel comprises: the umbrella valve comprises an inlet sink groove in a crescent shape, a plurality of inlet holes arranged in the inlet sink groove, and an umbrella valve positioning hole arranged in the inlet sink groove;

the umbrella valve connecting section is arranged in the umbrella valve positioning hole, and the umbrella valve supporting part and the spherical fixing section are respectively arranged at two ends of the umbrella valve positioning hole;

the inlet holes are arranged around the umbrella valve positioning hole, and the umbrella valve sealing surface covers the inlet holes.

The liquid pump described above, wherein the outlet passage comprises: the limiting rod is connected with the inner walls of the two sides of the outlet hole.

The liquid pump described above, wherein the lower cover includes: the lower cover comprises a lower cover flat plate and a lower cover side wall connected with the outer edge of the lower cover flat plate, wherein the lower cover flat plate is provided with three through grooves at least used for accommodating the connecting parts, and each through groove is internally provided with one connecting part;

the lower surface of the lower cover flat plate extends downwards along the outer edge of the through groove to form a retaining part for protecting the connecting part;

the lower surface of the mounting part is provided with a positioning part, and the upper surface of the lower cover plate is provided with a positioning groove matched with the positioning part.

The above liquid pump further includes: the impeller, the impeller possesses an inclined plane, the inclined plane with possess the contained angle between the plane at installation department place, through the impeller centers on the axis rotation of motor shaft is in order to arouse connecting portion along its axial reciprocating deformation.

In the above liquid pump, the outer edge of the impeller has three annular structures, each of the annular structures is sleeved on one of the extending portions, and the annular structure is limited between the extruding portion and the limiting portion;

wherein, by rotation of the impeller around the axis of the motor shaft, the three annular structures are periodically displaced in the direction of the axis respectively to cause reciprocating deformation of the connecting portion in the axial direction thereof.

The above liquid pump further includes: the connecting rod is connected with the rotating wheel and the impeller, and an included angle is formed between the axis of the connecting rod and the axis of the motor shaft;

the upper end of the connecting rod is close to the axis of the motor shaft, and the lower end of the connecting rod is far away from the axis of the motor shaft.

A method of operating a liquid pump, wherein,

the liquid pump includes: the motor comprises an upper cover, a middle cover, a lower cover and a shell which are sequentially connected from top to bottom, and further comprises a motor, a rotating wheel, a magnet and a Hall sensor, wherein a motor shaft of the motor penetrates through the shell and is fixedly connected with the rotating wheel in the shell, the magnet is respectively arranged on two sides of the rotating wheel, and the Hall sensor monitors the magnet;

wherein, 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 is communicated with the fluid inlet, and the outlet channel is communicated with the fluid outlet;

the liquid pump further includes: the leather cup is communicated with the inlet channel and the outlet channel, a first one-way valve is arranged between the inlet channel and the leather cup, and a second one-way valve is arranged between the leather cup and the outlet channel;

the liquid pump further includes: the impeller is connected with the rotating wheel, the upper surface of the impeller is an inclined surface, and the outer edge of the impeller is connected with the leather cup through a connecting point;

the working method comprises the following steps:

the motor drives the rotating wheel to rotate, the rotating wheel drives the impeller to rotate around the axis of a motor shaft of the motor, the rotation of the impeller is converted into periodic reciprocating motion of the connecting point through the inclined surface of the upper surface of the impeller so as to drive the leather cup to deform in a reciprocating mode, and the leather cup introduces fluid into the leather cup from the fluid inlet and/or discharges the fluid from the leather cup from the fluid outlet through periodic volume change;

the rotating wheel drives the magnet to rotate to cause periodic change of a magnetic pole, and the Hall sensor monitors the periodic change of the magnetic pole to generate a pulse signal matched with the number of the rotating cycles of the motor;

and controlling the flow rate of the liquid pump by inputting instructions to the motor and matching the number of cycles of the pulse signal.

The utility model discloses owing to adopted above-mentioned technique, make it compare the positive effect that has with prior art and be:

(1) the utility model discloses a rotational speed of the cooperation monitoring motor of hall sensor and magnet to accurate flow control is realized to the control motor.

(2) The utility model discloses a set up the one-way control that an end cap can realize three exit channel, saved the inner space and the cost of liquid pump.

(3) The utility model discloses an umbrella valve and inlet channel, exit channel's cooperation design realize every pump chamber mechanism mutual noninterference's autonomous working, further compressed the inner space and the cost of liquid pump simultaneously.

(4) The utility model discloses a unique design of runner realizes the quick assembly disassembly of each part, can measure and control the work orbit of each part accurately simultaneously.

Drawings

Fig. 1 is a perspective view of a liquid pump according to the present invention.

Fig. 2 is a perspective view of the liquid pump of the present invention.

Fig. 3 is a perspective view of the liquid pump of the present invention.

Fig. 4 is a sectional view of the liquid pump of the present invention.

Fig. 4a is a sectional view of the liquid pump of the present invention.

Fig. 5 is an exploded view of the liquid pump of the present invention.

Fig. 6 is an exploded view of the liquid pump of the present invention.

Fig. 7 is a perspective view of an upper cover of the liquid pump according to the present invention.

Fig. 8 is a perspective view of the upper cover of the 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 stopper of a liquid pump according to the present invention.

Fig. 11 is a perspective view of a stopper of a liquid pump according to the present invention.

Fig. 12a is a perspective view of the middle cap of the liquid pump according to the present invention.

Fig. 12b is a perspective view of the middle cap of the liquid pump according to the present invention.

Fig. 13 is a perspective view of the middle cap of the liquid pump according to the present invention.

Fig. 14 is a perspective view of an umbrella valve of the liquid pump according to the present invention.

Fig. 15 is a perspective view of an umbrella valve of the liquid pump of 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 sectional view of the pump chamber mechanism of the liquid pump according to the present invention.

Fig. 19b is a sectional view of the pump chamber mechanism of the liquid pump according to the present invention.

Fig. 20 is a perspective view of a lower cover of the 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 rotary wheel, and a magnet of the liquid pump according to the present invention.

Fig. 22 is a perspective view of a link, a rotor, and a magnet of the liquid pump according to the present invention.

Fig. 22a is a sectional view of the runner of the liquid pump of the present invention.

Fig. 23 is a perspective view of the housing, the motor, and the hall sensor of the liquid pump according to the present invention.

Fig. 24a is a perspective view of a housing of a liquid pump according to the present invention.

Fig. 24b is a perspective view of a housing of the liquid pump according to the present invention.

In the drawings: 100. an upper cover; 1001 fluid inlet; 1002. a fluid outlet; 101. a middle cover; 1011. an inlet channel; 1011a, an inlet sink groove; 1011b, inlet port; 1011c, an umbrella valve positioning hole; 1012. an outlet channel; 1012a, an outlet aperture; 1012b and a limiting rod; 1013. a plug groove; 1014. a plug positioning column; 102. a lower cover; 1021. a lower cover plate; 1022. a lower cover side wall; 1023. a through groove; 1024. a holding section; 1025. positioning a groove; 103. a housing; 1031. a socket portion; 1032. buckling holes; 1033. a contact bar; 1034. a limiting clamping block; 1035. a first plate member; 1036. a second plate member; 1037. a third plate member; 104. a motor; 105. a rotating wheel; 1051. a magnet mounting post; 1052. a shaft hole; 1052a, a first shaft hole part; 1052b, a second shaft hole part; 1053. an inclined hole; 1053a, a step structure; 1054. a step of the runner; 106. a magnet; 107. a Hall sensor; 108. a pump chamber mechanism; 1081. an installation part; 1081a, a positioning part; 1082. a connecting portion; 1083. a pressing section; 1084. an extension portion; 1085. a limiting part; 109. a plug; 1091. a plug sealing surface; 1092. a plug positioning block; 1093. a triangular fixing hole; 1094. a reinforcing support section; 110. an umbrella valve; 1101. an umbrella valve sealing surface; 1102. an umbrella valve support portion; 1103. an umbrella valve connection section; 1104. a spherical fixed end; 111. an impeller; 1111. a cyclic structure; 1112. an impeller connecting portion; 1113. an impeller body; 1114. a measuring tank; 112. a connecting rod; 113. a seal ring; 1131. an avoidance groove; 1132. an avoidance groove; 1133. an avoidance groove;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

Referring to fig. 1-24 b, a preferred embodiment of a liquid pump is shown, comprising: from last upper cover 100, well lid 101 and the lower cover 102 of sealing connection down in proper order, still include: the lower extreme of lower cover 102 is located to casing 103, is formed with socket 1031 on the periphery wall of casing 103, and the inside of socket 1031 is formed with the holding chamber, and the one end in holding chamber possesses the opening, and the other end in holding chamber has seted up detain hole 1032.

Preferably, the middle cover 101, the lower cover 102 and the housing 103 are fixedly connected by a plurality of screws located at the outer edge thereof, and the upper cover 100 and the middle cover 101 are detachably and fixedly connected by a plurality of snap structures located at the outer edge thereof.

Wherein, a sealing ring 113 is further arranged between the upper cover 101 and the lower cover 102, and the outer edge of the sealing ring 113 is preferably provided with an avoiding groove 1131 for avoiding the screw.

Preferably, the housing 103 further has a fixing structure thereon for integrally fixing the liquid pump to other mechanisms/devices, the fixing structure including: a first plate member 1035, preferably triangular in shape, arranged radially, a second plate member 1036 connected perpendicularly to the first plate member 1035, and at least one third plate member 1037 connecting the first plate member 1035 and the second plate member 1036 for reinforcement. Wherein, the second plate 1036 is provided with a fixing hole or a threaded hole.

Preferably, when the housing 103 is assembled, the other side of the third plate 1037 opposite to the first plate 1035 is supported or fixed on the outer wall of the motor 104.

Further, as a preferred embodiment, the motor 104, the rotating wheel 105 and the magnets 106, the motor shaft of the motor 104 penetrates through the lower end of the housing 103, extends into the housing 103, and is fixedly connected with the rotating wheel 105, wherein the outer peripheral wall of the rotating wheel 105 is provided with two first planes parallel to each other, two magnet mounting columns 1051 are respectively arranged on the two first planes, preferably, the two magnet mounting columns 1051 are hollow cylindrical structures, the axes of the two magnet mounting columns 1051 are preferably set to be perpendicular to the axis of the housing 103, the two magnet mounting columns 1051 are symmetrically arranged, one magnet 106 is arranged inside each magnet mounting column 1051, and the magnetic poles of the two magnets 106 are different; the motor 104 drives the runner 105 through periodic rotation to cause periodic variation of the magnetic poles.

Further, as a preferred embodiment, the liquid pump further includes: hall sensor 107, Hall sensor 107 locate the holding intracavity, and Hall sensor 107 possesses and detains hole 1032 assorted buckle 1071, and Hall sensor 107 monitors the periodic change of magnetic pole so as to produce the signal with the cycle number assorted of the motor 104.

Further, as a preferred embodiment, the inner walls of the two sides of the accommodating cavity are respectively provided with an abutting strip 1033, the two sides of the hall sensor 107 are respectively abutted against the abutting strips 1033, and the position of the hall sensor 107 is limited by the abutting strips 1033.

Further, as a preferred embodiment, a limiting latch 1034 is further disposed on an inner wall of the accommodating cavity close to one side of the cylindrical portion of the housing 103, and the limiting latch 1034 extends from one end of the accommodating cavity to the other end thereof, so as to limit the position of the hall sensor 107 through the limiting latch 1034.

Further, as a preferred embodiment, the top cover 100 is provided with a fluid inlet 1001 and a fluid outlet 1002.

Further, as a preferred embodiment, the middle cap 101 is provided with three inlet channels 1011 and three outlet channels 1012, wherein the three inlet channels 1011 are both communicated with the fluid inlet 1001, and the three outlet channels 1012 are both communicated with the fluid outlet 1002.

Further, as a preferred embodiment, in which three outlet channels 1012 are arranged at the middle position of the middle cap 101, three inlet channels 1011 surround the outer peripheries of the three outlet channels 1012.

Preferably, the sealing ring 113 further has an evacuation groove 1132 for evacuating the inlet channel 1011 and an evacuation groove 1133 for evacuating the outlet channel 1012. The avoiding groove 1132 is positioned in the middle of the sealing ring 113 and is circular; avoidance slot 1133 surrounds avoidance slot 1132, and is crescent shaped.

Further, as a preferred embodiment, the liquid pump further includes: and the pump chamber mechanism 108 is arranged between the middle cover 101 and the shell 103, and the pump chamber mechanism 108 comprises a mounting part 1081, a connecting part 1082, a squeezing part 1083, an extending part 1084 and a limiting part 1085 which are sequentially arranged from top to bottom.

Further, as a preferred embodiment, wherein the mounting portion 1081 is provided between the middle cover 101 and the lower cover 103; the connecting portion 1082, the pressing portion 1083, the extending portion 1084, and the stopper portion 1085 are accommodated inside the lower cover 102 and/or the housing 103.

Further, as a preferred embodiment, the connecting portion 1082 is a flexible member, the connecting portion 1082 is a hollow structure, and the connecting portion 1082 is reciprocally deformed along an axial direction thereof to perform a periodic volume change, so as to introduce the fluid from the fluid inlet 1001 into the connecting portion 1082 and/or discharge the fluid from the connecting portion 1082 through the fluid outlet 1002. By the movement of the pressing portion 1083 in the horizontal direction in fig. 19, the connecting portion 1082 is deformed, so that the volume of the connecting portion 1082 is changed. When the pressing portion 1083 is periodically reciprocated in the horizontal direction in fig. 19, the connecting portion 1082 is also periodically changed in volume accordingly.

Further, as a preferred embodiment, the pump chamber mechanism 108 includes a mounting portion 1081 and three connecting portions 1082 connected to the mounting portion 1081, and each of the connecting portions 1082 is sequentially connected to a pressing portion 1083, an extending portion 1084 and a limiting portion 1085.

Further, as a preferred embodiment, each of the connecting portions 1082 is in communication with and only communicates with one of the inlet channels 1011 and one of the outlet channels 1012, so that in each of the connecting portions 1082, fluid enters the connecting portion 1082 from a single one of the inlet channels 1011 and fluid is also discharged from the connecting portion 1082 from a single one of the outlet channels 1012, i.e., each of the connecting portions 1082 individually performs the entering and discharging of the fluid without mutual influence.

Further, as a preferred embodiment, the connecting portion 1082 is cylindrical or bowl-shaped, and the pressing portion 1083 is cylindrical.

Further, as a preferred embodiment, the liquid pump further includes: and a plug 109, wherein the plug 109 is arranged in the middle of the upper surface of the middle cover 101, and the plug 109 allows the fluid to flow from the connecting part 1082 to the outlet channel 1012 in a single direction.

Further, as a preferred embodiment, a plug groove 1013 is provided in the middle of the upper surface of the middle cover 101, the plug 109 is provided inside the plug groove 1013, the outlet channel 1012 is also provided inside the plug groove 1012, and the plug groove 1013 further has a triangular plug positioning post 1014 inside.

Further, as a preferred embodiment, the plug 109 includes: the plug sealing surface 1091, the plug sealing surface 1091 being an arc, the concave surface of the plug sealing surface 1091 being disposed directly opposite the three outlet channels 1012.

Further, as a preferred embodiment, the plug 109 includes: the plug positioning block 1092 is triangular, and the plug positioning block 1092 is arranged in the middle of the convex surface of the plug sealing surface 1091.

Further, as a preferred embodiment, the plug 109 includes: a triangular fixing hole 1093, the triangular fixing hole 1093 is formed from the concave surface of the plug sealing surface 1091 to the inside of the plug positioning block 1092, and the triangular fixing hole 1093 is matched with the plug positioning column 1014.

Further, as a preferred embodiment, the plug 109 includes: the lower surfaces of the three reinforcing

support sections

1094 and 1094 are connected to the convex surface of the plug sealing surface 1091, and each reinforcing support section 1094 extends from an edge of the plug positioning block 1092 to the outer edge of the convex surface of the plug sealing surface 1091.

Further, as a preferred embodiment, three reinforcing support sections 1094 divide the plug sealing surface 1091 into three plug sealing regions, each of which faces an outlet passage 1012.

Specifically, when the connecting portion 1082 is deformed by the thrust of the pressing portion 1083 to reduce the capacity of the connecting portion 1082, the fluid in the connecting portion 1082 moves toward the outlet passage 1012, and the plug sealing surface 1091 is pressed and deformed to expose the outlet passage 1012, thereby discharging the fluid.

On the other hand, when the connecting portion 1082 is deformed by the tensile force of the pressing portion 1083, and the capacity of the connecting portion 1082 is increased, a negative pressure is formed inside the connecting portion 1082, and due to the arc structure of the plug sealing surface 1091, the plug sealing area of the corresponding plug sealing surface 1091 is attracted to the middle cap 102, so as to block the outlet channel 1012 and prevent the fluid from flowing back. Thereby enabling the plug 109 to function as a one-way valve.

Specifically, due to the above structure of the plug 109, one plug 109 can form the check valve function for three outlet channels 1012, and due to the structure of the plug sealing area, the check valve functions of the three outlet channels 1012 can be prevented from interfering with each other.

Further, as a preferred embodiment, the liquid pump further includes: three umbrella valves 110, three umbrella valves 110 are all arranged on the lower surface of the middle cover 101, the three umbrella valves 110 surround the periphery of the plug 109, one umbrella valve 110 is correspondingly arranged on each connecting portion 1082, and each umbrella valve 110 allows the fluid to flow from the inlet channel 1011 to the connecting portion 1082 in a one-way mode.

Further, as a preferred embodiment, each umbrella valve 110 includes: umbrella valve sealing surface 1101, umbrella valve sealing surface 1101 is cambered, and the concave surface of umbrella valve sealing surface 1101 is disposed directly opposite three inlet passages 1011, and the convex surface of umbrella valve sealing surface 1101 is disposed directly opposite connecting portion 1082.

Further, as a preferred embodiment, each umbrella valve 110 includes: an umbrella valve support 1102, the umbrella valve support 1102 being connected to the concave surface of the umbrella valve sealing surface 1101.

Further, as a preferred embodiment, each umbrella valve 110 includes: umbrella valve connection section 1103, umbrella valve connection section 1103 is connected with umbrella valve support 1102.

Further, as a preferred embodiment, each umbrella valve 110 includes: the spherical fixed section 1104, the spherical fixed section 1104 are connected with the umbrella valve connecting section 1103, and the umbrella valve 110 is limited on the middle cover 101 by the umbrella valve supporting part 1102, the umbrella valve connecting section 1103 and the spherical fixed section 1104.

Specifically, when the connecting portion 1082 is deformed by the pulling force of the squeezing portion 1083, so that the capacity of the connecting portion 1082 is increased, negative pressure is formed inside the connecting portion 1082, external fluid moves towards the inlet channel 1011, and due to the arc structure of the umbrella valve sealing surface 1101, the fluid pushes the umbrella valve sealing surface 1101 away, the inlet channel 1011 is opened, and the fluid enters the connecting portion 1082, so that the fluid enters the connecting portion 1082. On the other hand, when the connecting portion 1082 is deformed by the pressure of the pressing portion 1082 and the capacity of the connecting portion 1082 is reduced, the fluid presses the umbrella valve sealing surface 1101 against the inlet passage 1011 to block the inlet passage 1011, thereby preventing the fluid from flowing back. Thereby enabling the umbrella valve 110 to function as a one-way valve.

Further, as a preferred embodiment, the inlet channel 1011 includes: the umbrella valve is characterized by comprising a crescent-shaped inlet sinking groove 1011a, a plurality of inlet holes 1011b arranged in the inlet sinking groove 1011a, and an umbrella valve positioning hole 1011c arranged in the inlet sinking groove 1011 a.

Further, as a preferred embodiment, the umbrella valve connecting section 1103 is disposed in the umbrella valve positioning hole 1011c, and the umbrella valve supporting portion 1102 and the ball fixing section 1104 are disposed at both ends of the umbrella valve positioning hole 1011c, respectively.

Further, as a preferred embodiment, where a plurality of inlet apertures 1011b are disposed about umbrella valve positioning aperture 1011c, umbrella valve sealing surface 1101 covers a plurality of inlet apertures 1011 b.

Further, as a preferred embodiment, the outlet passage 1012 includes: an outlet hole 1012a having a kidney shape, and a stopper 1012b connected to inner walls of both sides of the outlet hole 1012a, wherein the stopper sealing surface 1091 of the plug 109 is prevented from being sucked into the outlet hole 1012a by the stopper 1012 b.

In another preferred embodiment, the kidney-shaped outlet opening 1012a is replaced with a small circular hole, which also prevents the plug sealing surface 1091 from being sucked in, but in this case has a smaller diameter than the kidney-shaped outlet opening 1012a described above.

Further, as a preferred embodiment, it is preferable that the inlet passage 1011 and the outlet passage 1012 are integrally formed in a substantially circular configuration to match the shape of the connecting portion 1082, while achieving a configuration in which one connecting portion 1082 is provided with one inlet passage 1011 and one outlet passage 1012, respectively, while saving as much space as possible inside the liquid pump.

Further, as a preferred embodiment, the lower cover 102 includes: the flat board 1021 of lower cover, with the lower cover side that the outer fringe of the flat board 1021 is connected enclose 1022, set up three through groove 1023 that is used for holding connecting portion 1082 at least on the flat board 1021 of lower cover, all be equipped with a connecting portion 1082 in each through groove 1023.

Further, as a preferred embodiment, a holding portion 1024 for protecting the connecting portion 1082 is formed by extending the lower surface of the lower cover plate 1021 along the outer edge of the through groove 1023.

Further, as a preferred embodiment, the lower surface of the mounting portion 1081 is provided with a positioning portion 1081a, and the upper surface of the lower cover plate 1021 is provided with a positioning groove 1025 matched with the positioning portion 1081 a.

Further, as a preferred embodiment, the liquid pump further includes: the impeller 111, the impeller 111 has an inclined surface, i.e., the left side surface of the impeller 111 in fig. 16, and an angle is formed between the inclined surface and the plane of the mounting portion 1081, and the connecting portion 1082 is reciprocally deformed in the axial direction thereof by the rotation of the impeller 111 around the axis of the motor shaft.

Further, as a preferred embodiment, the outer edge of the impeller 111 has three ring structures 1111, each ring structure 1111 is sleeved on an extending portion 1084, and the ring structures 1111 are limited between the pressing portion 1083 and the limiting portion 1085.

Specifically, the impeller 111 includes: an impeller connecting portion 1112, an impeller main body 1113, and the above-described annular structure 1111 provided on the outer edge of the impeller main body 1113. The impeller connecting portion 1112 has a link groove 1115 for connecting with a link 112 described below. The impeller body 1113 is preferably substantially triangular in shape, with the ring structures 1111 provided at three corners of the impeller body 1113, respectively.

Preferably, the middle of the impeller body 1113 is provided with a measuring groove 1114, the measuring groove 1114 is communicated with the link groove 1115, and the measuring groove 1114 and the link groove 1115 are coaxially arranged, so as to conveniently measure the distance from the link 112 to the ring structure 1111.

Further, as a preferred embodiment, by the rotation of the impeller 111 around the axis of the motor shaft, the three-ring structure 1111 is periodically displaced in the direction of the axis respectively to cause the reciprocal deformation of the connecting portion 1082 in the axial direction thereof.

Specifically, since the impeller 111 is disposed obliquely, when the impeller 111 rotates or eccentrically rotates about the horizontal axis in fig. 16, the rotation or eccentric rotation thereof can be converted into the movement of the ring-shaped structure 111 in the horizontal direction in fig. 16 to generate a pushing force to the pressing portion 1083 or a pulling force to the stopper portion 1085, thereby achieving the reduction or expansion of the volume of the connecting portion 1082.

Further, as a preferred embodiment, the method further comprises: and a connecting rod 112, wherein the connecting rod 112 connects the rotating wheel 105 and the impeller 111, and an included angle is formed between the axis of the connecting rod 112 and the axis of the motor shaft.

Further, as a preferred embodiment, the upper end of the connecting rod 112 is close to the axis of the motor shaft, and the lower end of the connecting rod 112 is far away from the axis of the motor shaft.

The above description is only an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The utility model discloses still have following embodiment on above-mentioned basis:

in a further embodiment of the present invention, please continue to refer to fig. 1 to 24b, a shaft hole 1052 is formed on the rotating wheel 105 along the axial direction thereof, and the motor shaft is disposed in the shaft hole 1052; the turning wheel 105 is provided with an inclined hole 1053, the connecting rod 112 is arranged in the inclined hole 1053, and an included angle is formed between the axis of the inclined hole 1053 and the axis of the shaft hole 1052.

The utility model discloses a further embodiment, wherein, inclined hole 1053 is the blind hole, and inclined hole 1053 forms stair structure 1053a in the surface department of runner, through stair structure 1053 a's setting in order to prevent wearing and tearing.

Specifically, the step structure 1053a includes: a step enlargement portion having a diameter larger than the inclined hole 1053, and a step connection portion having a diameter gradually decreasing toward the inclined hole 1053, wherein the diameter of the larger end of the step connection portion is equal to the diameter of the step enlargement portion, and the diameter of the smaller end of the step connection portion is equal to the diameter of the inclined hole 1053.

The utility model discloses a further embodiment, runner 105's both sides have along its radial arrangement two just to magnet erection column 1051 each other, and each magnet erection column 1051's inside all is equipped with magnet 106, and runner 105 takes the periodic rotation of magnet 106 in order to arouse the periodic change of magnetic pole.

In a further embodiment of the present invention, the shaft hole 1052 includes: a first shaft hole portion 1052a for receiving the motor shaft and a second shaft hole portion 1052b communicating with the first shaft hole portion 1052a and penetrating to the surface of the runner 105, wherein the inner diameter of the first shaft hole portion 1052a is larger than the inner diameter of the second shaft hole portion 1052b, and the first shaft hole portion 1052a and the second shaft hole portion 1052b are coaxially disposed.

Specifically, the second shaft hole portion 1052b is not a necessary arrangement for accommodating or mounting the motor shaft, but by providing the second shaft hole portion 1052b, the distance between the motor shaft and the inclined hole 1053 can be conveniently measured to achieve precise control of the movement of the liquid pump.

The utility model discloses a further embodiment, the surface that motor 104 was kept away from to runner 105 extends outward and forms runner step portion 1054, can conveniently carry out the dismouting to runner 105 whole through setting up runner step portion 1054.

The utility model discloses a further embodiment still provides a working method of liquid pump, and wherein, the liquid pump includes: the upper cover 100, the middle cover 101, the lower cover 102 and the shell 103 are connected in sequence from top to bottom, and the motor 104, the rotating wheel 105, the magnet 106 and the hall sensor 107 are further included, a motor shaft of the motor 104 penetrates through the shell 103 and is fixedly connected with the rotating wheel 105 in the shell 103, the magnet 106 is respectively arranged on two sides of the rotating wheel 105, and the hall sensor 107 monitors the magnet 106.

Wherein, the upper cover 100 is provided with a fluid inlet 1001 and a fluid outlet 1002; the middle cap 101 is provided with at least one inlet channel 1011 and at least one outlet channel 1012, the inlet channel 1011 communicating with the fluid inlet 1001 and the outlet channel 1012 communicating with the fluid outlet 1002.

In the working method, the liquid pump further comprises: a leather cup (namely, the pump chamber mechanism 108), the leather cup is communicated with an inlet channel 1011 and an outlet channel 1012, a first one-way valve (namely, an umbrella valve 110) is arranged between the inlet channel 1011 and the leather cup, and a second one-way valve (namely, a plug 109) is arranged between the leather cup and the outlet channel 1012;

in the working method, the liquid pump further comprises: the impeller 111 is connected with the rotating wheel 105, the upper surface of the impeller 111 is an inclined surface, and the outer edge of the impeller 111 is connected with the leather cup through a connecting point;

the working method comprises the following steps:

the motor 104 drives the rotating wheel 105 to rotate, the rotating wheel 105 drives the impeller 111 to rotate around the axis of the motor shaft of the motor 104, the rotation of the impeller 111 is converted into periodic reciprocating motion of a connecting point through the inclined surface of the upper surface of the impeller 111, so as to drive the leather cup to perform reciprocating deformation, and the leather cup introduces fluid into the leather cup from the fluid inlet 1001 and/or discharges the fluid from the leather cup from the fluid outlet 1002 through periodic volume change;

the periodic change of the magnetic pole is caused by the rotation of the magnet 106 driven by the runner 105, and the hall sensor 107 monitors the periodic change of the magnetic pole to generate a pulse signal matched with the number of the rotation cycles of the motor 104;

the flow rate of the liquid pump is controlled by inputting a command to the motor 104, matching the number of cycles of the pulse signal.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims

1. A liquid pump, comprising: a fluid inlet, a fluid outlet, and a pump chamber, the fluid inlet and the fluid outlet communicating with the pump chamber, respectively, the pump chamber introducing fluid from the fluid inlet into the pump chamber and/or discharging fluid from the pump chamber from the fluid outlet by a periodic volume change;

it is characterized by also comprising:

2. A liquid pump according to claim 1, wherein at least a portion of the pump chamber is formed by a flexible member which is reciprocally deformed in its axial direction to effect the periodic volume change;

3. The liquid pump of claim 2, wherein the drive mechanism is a motor having a motor shaft fixedly connected to the wheel;

4. The liquid pump according to claim 3, wherein the rotary wheel has a shaft hole along an axial direction thereof, and the motor shaft is disposed in the shaft hole; the rotating wheel is provided with an inclined hole, the connecting rod is arranged in the inclined hole, and an included angle is formed between the axis of the inclined hole and the axis of the shaft hole;

5. A liquid pump according to claim 3 or claim 4, wherein two diametrically opposed magnet mounting posts are arranged on either side of the wheel, each having a magnet disposed therein, the wheel carrying the magnet in a periodic rotation to cause a periodic change in magnetic polarity.

6. A liquid pump according to claim 4, wherein the shaft bore comprises: the shaft structure comprises a first shaft hole part used for accommodating the motor shaft and a second shaft hole part communicated with the first shaft hole part and penetrating to the surface of the rotating wheel, wherein the inner diameter of the first shaft hole part is larger than that of the second shaft hole part, and the first shaft hole part and the second shaft hole part are coaxially arranged.

7. A liquid pump according to claim 1, wherein the surface of the wheel on the side remote from the drive mechanism extends outwardly to form a wheel step.

8. A liquid pump, comprising: from last upper cover, well lid and the lower cover to sealing connection in proper order down, its characterized in that still includes:

9. A liquid pump according to claim 8,

10. A liquid pump according to claim 8,

the upper cover is provided with a fluid inlet and a fluid outlet;

11. The liquid pump of claim 10, further comprising: the pump chamber mechanism is arranged between the middle cover and the shell and comprises an installation part, a connecting part, an extrusion part, an extension part and a limiting part which are sequentially arranged from top to bottom;

12. A liquid pump according to claim 11, wherein the pump chamber mechanism includes a mounting portion and three connecting portions connected to the mounting portion, and each connecting portion is connected to an extrusion portion, an extension portion, and a stopper portion in this order;

13. The liquid pump of claim 12, further comprising: the plug is arranged in the middle of the upper surface of the middle cover and allows fluid to flow from the connecting part to the outlet channel in a unidirectional mode;

the end cap comprises:

14. The liquid pump of claim 13, further comprising: the three umbrella valves are arranged on the lower surface of the middle cover and surround the periphery of the plug, one umbrella valve is correspondingly arranged on each connecting part, and each umbrella valve allows fluid to flow from the inlet channel to the connecting part in a one-way manner;

each of the umbrella valves comprising:

15. A liquid pump according to claim 14, wherein the inlet passage comprises: the umbrella valve comprises an inlet sink groove in a crescent shape, a plurality of inlet holes arranged in the inlet sink groove, and an umbrella valve positioning hole arranged in the inlet sink groove;

16. A liquid pump according to claim 15, wherein the outlet passage comprises: the limiting rod is connected with the inner walls of the two sides of the outlet hole.

17. The liquid pump of claim 11, wherein the middle cap includes: the lower cover comprises a lower cover flat plate and a lower cover side wall connected with the outer edge of the lower cover flat plate, wherein the lower cover flat plate is provided with three through grooves at least used for accommodating the connecting parts, and each through groove is internally provided with one connecting part;

18. The liquid pump of claim 11, further comprising: the impeller, the impeller possesses an inclined plane, the inclined plane with possess the contained angle between the plane at installation department place, through the impeller centers on the axis rotation of motor shaft is in order to arouse connecting portion along its axial reciprocating deformation.

19. The liquid pump according to claim 18, wherein the outer edge of the impeller has three ring structures, each ring structure is sleeved on one of the extending portions, and the ring structures are limited between the pressing portion and the limiting portion;

20. The liquid pump of claim 19, further comprising: the connecting rod is connected with the rotating wheel and the impeller, and an included angle is formed between the axis of the connecting rod and the axis of the motor shaft;