Tandem waterway micro pump

Abstract

The utility model discloses a series waterway micro pump, which relates to the technical field of liquid conveying equipment, and comprises a driving component, a swinging part, a leather cup part, a valve plate and a tube shell, the swinging piece is in transmission connection with the driving assembly and can eccentrically swing around an output shaft of the driving assembly; the bottom of the leather cup piece is connected to the traction part, an opening of the leather cup piece covers the valve plate in a sealing mode to form a liquid inlet cavity and a liquid outlet cavity, the pipe shell covers the side, away from the leather cup piece, of the valve plate, the pipe shell is provided with a liquid inlet pipe unidirectionally communicated with the liquid inlet cavity and a liquid outlet pipe unidirectionally communicated with the liquid outlet cavity, and the side, away from the leather cup piece, of the valve plate and the pipe shell form a liquid passing cavity; the liquid passing cavity is communicated with the liquid inlet cavity and the liquid outlet cavity through two liquid passing holes, and the two liquid passing holes are adjacent to the opposite side walls of the liquid passing cavity respectively. According to the technical scheme provided by the utility model, a water path in the micro pump is prolonged, so that the fluid stably flows at a low speed, and the use experience of a user is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid conveying equipment, in particular to a series water channel micro pump. Background Art

[0002] Micro pumps are relatively common products in the field of liquid transmission. They are small in size and compact in structure, and can play a vital role in many occasions. Among them, the micro pump uses a micro motor to make the diaphragm in the liquid pump do reciprocating motion, thereby compressing and stretching the space in the pump chamber. Under the action of the one-way hole, a pressure difference is generated at the water outlet or the water inlet. Under the action of the pressure difference, water is pressed into the water inlet and then discharged from the water outlet. However, some products require a low and stable output flow rate, such as a hair straightener, which will increase the precision requirements for the micro pump to control the fluid flow rate. The existing technology usually obtains a lower flow rate by reducing the speed of the micro motor. However, in the case of low flow rate, changing the speed of the micro motor is likely to cause large fluctuations in the output power of the micro motor, which in turn has a greater impact on the flow stability of the fluid, which is not conducive to use. Utility Model Content

[0003] The main purpose of the utility model is to provide a series water channel micro pump, which makes the fluid flow slowly and stably by extending the water channel in the micro pump, thereby ensuring the user experience.

[0004] To achieve the above purpose, the serial water circuit micro pump proposed by the utility model comprises:

[0005] A drive assembly, wherein the drive assembly is connected to a mounting seat;

[0006] A swinging member, the swinging member is arranged in the mounting seat and is drivingly connected to the driving assembly, the swinging member is provided with two traction parts, and can swing eccentrically around the output shaft of the driving assembly;

[0007] A leather cup member is arranged in the mounting seat, the leather cup member is provided with two leather cup parts, and the bottoms of the two leather cup parts are respectively connected to the corresponding traction parts;

[0008] A valve plate, which is covered on the mounting seat, and the opening sealing covers of the two leather cup parts are arranged on the valve plate to form a liquid inlet cavity and a liquid outlet cavity, and the valve plate is provided with a first liquid through hole and a second liquid through hole; and

[0009] A tube shell, which is covered on the side of the valve plate away from the leather cup, and the tube shell is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is unidirectionally connected to the liquid inlet cavity, the liquid outlet cavity is unidirectionally connected to the liquid outlet pipe, and the side of the valve plate away from the leather cup forms a liquid cavity with the tube shell;

[0010] The liquid passage cavity is connected to the liquid outlet cavity through the first liquid passage hole, and is connected to the liquid inlet cavity through the second liquid passage hole. The first liquid passage hole and the second liquid passage hole are respectively arranged adjacent to opposite side walls of the liquid passage cavity.

[0011] In one embodiment, the connection point between the liquid outlet pipe and the liquid outlet cavity is arranged close to the liquid inlet cavity.

[0012] In one embodiment, the first liquid passage hole is disposed away from the liquid inlet cavity.

[0013] In one embodiment, the connection point between the liquid inlet pipe and the liquid inlet cavity is arranged away from the liquid outlet cavity.

[0014] In one embodiment, the second liquid passage hole is disposed close to the liquid outlet cavity.

[0015] In one embodiment, a liquid inlet buffer chamber and a liquid outlet buffer chamber are further formed between the tube shell and the valve plate, the liquid inlet pipe is connected to the liquid inlet chamber through the liquid inlet buffer chamber, and the liquid outlet chamber is connected to the liquid outlet pipe through the liquid outlet buffer chamber.

[0016] In one embodiment, the valve plate is provided with an annular protrusion on one side facing the tube shell, the tube shell covers the annular protrusion to form the liquid outlet buffer chamber, the liquid passage chamber is arranged around the outer circumference of the annular protrusion, and the first liquid passage hole and the second liquid passage hole are respectively arranged at the radial ends of the liquid passage chamber.

[0017] In one embodiment, the valve plate is provided with a liquid inlet hole corresponding to the liquid inlet buffer chamber to connect with the liquid inlet chamber, and is provided with a liquid outlet hole corresponding to the liquid outlet buffer chamber to connect with the liquid outlet chamber. The series water circuit micro pump is provided with a one-way valve sheet corresponding to the liquid outlet buffer chamber, the liquid outlet chamber and the liquid inlet chamber. The one-way valve sheet can be movably arranged on the valve plate and can cover the adjacent first liquid hole, the liquid inlet hole or the liquid outlet hole to limit the flow direction of the fluid.

[0018] In one embodiment, a fool-proof groove is recessed on one side of the valve plate facing the tube shell, and a fool-proof convex portion is provided on the tube shell corresponding to the fool-proof groove, and the fool-proof convex portion is clamped in the fool-proof groove.

[0019] In one embodiment, the swinging member includes a rocker arm connected between the two traction parts, the rocker arm is tilted relative to the output shaft of the driving assembly, the output shaft sleeve of the driving assembly is provided with an eccentric member, the eccentric member is provided with a limiting hole extending obliquely relative to the output shaft, and the rocker arm is clamped in the limiting hole.

[0020] In one embodiment, the leather cup member also includes a rod body portion arranged at the bottom of the leather cup portion, the rod body portion and the leather cup portion are integrally formed, a clamping joint is provided at one end of the rod body portion away from the corresponding leather cup portion, the traction portion is provided with a clamping hole, and the clamping joint is clamped in the clamping hole.

[0021] In one embodiment, the driving assembly includes a driving member and a reducer which are transmission-connected to each other, the reducer is transmission-connected to the swing member, and the swing member can swing eccentrically around an output shaft of the reducer.

[0022] The technical solution of the utility model drives the swinging member to swing eccentrically around its output shaft through a driving assembly, so that the two traction parts reciprocate alternately toward the corresponding leather cup parts, the leather cup parts remain stable in the position of the mounting seat and fit the surface of the valve plate, and driven by the traction parts, the two leather cup parts are deformed alternately to achieve alternating changes in the spatial size of the liquid inlet cavity and the liquid outlet cavity. In this way, the space of the liquid inlet cavity is first increased, and the fluid is sucked in from the liquid inlet pipe, and at the same time, the space of the liquid outlet cavity is reduced, and the fluid in the liquid outlet cavity is discharged from the liquid outlet pipe; then, the space of the liquid inlet cavity is reduced, The fluid in the liquid inlet chamber enters the liquid passage chamber on the other side of the valve plate from the second liquid passage hole, and flows from one side wall of the liquid passage chamber to the opposite side wall. At the same time, the space of the liquid outlet chamber increases, and the fluid in the liquid passage chamber is sucked from the first liquid passage hole into the liquid outlet chamber on the other side of the valve plate; it is presented as follows: the fluid enters the liquid inlet chamber from the liquid inlet pipe, enters the liquid passage chamber on the other side from the liquid inlet chamber from the second liquid passage hole, and after flowing through a long flow path in the liquid passage chamber, enters the liquid outlet chamber on the other side from the first liquid passage hole from the liquid passage chamber, and finally is discharged from the liquid outlet chamber from the liquid outlet pipe, forming a series water path with a longer path. In this way, while the output power of the drive component remains stable, the flow path length of the fluid is increased, and the reversing buffering effect of the liquid inlet chamber, liquid passage chamber and liquid outlet chamber in turn is used to reduce the flow velocity of the fluid, and the flow stability of the fluid is effectively guaranteed, so that the fluid maintains the rated flow accuracy and flows, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of an embodiment of a series water circuit micro pump provided by the utility model;

[0025] Figure 2 for Figure 1 A cross-sectional view of a micro pump in series water circuit;

[0026] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0027] Figure 4 for Figure 1 Explosion diagram of the micro pump in series water circuit;

[0028] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0029] Figure 6 for Figure 4 A partial enlarged view of point C in the middle;

[0030] Figure 7 for Figure 1 Schematic diagram of the structure of the middle valve plate;

[0031] Figure 8 for Figure 1 Schematic diagram of the structure of the middle tube shell.

[0032] Description of Figure Numbers:

[0033] 100, driving member; 200, reducer; 210, eccentric member; 211, limiting hole;

[0034] 300, mounting seat; 310, base; 320, mounting cover;

[0035] 400, swinging member; 410, traction portion; 411, clamping hole; 420, swing rod;

[0036] 500, leather cup member; 510, leather cup portion; 520, rod body portion; 521, clamping joint;

[0037] 600, valve plate; 610, first liquid hole; 620, second liquid hole; 630, annular convexity; 631, liquid outlet buffer cavity; 640, liquid inlet hole; 650, liquid outlet hole; 660, liquid inlet cavity; 670, liquid outlet cavity; 680, foolproof groove; 690, one-way valve plate;

[0038] 700, tube shell; 710, liquid inlet pipe; 720, liquid inlet buffer chamber; 730, liquid outlet pipe; 740, liquid passage chamber; 750, anti-fouling convex part; 760, pressure rib.

[0039] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] Micro pumps are widely used in household appliances, instruments, medical and health fields, etc. Among them, for beauty and hairdressing equipment, hair straightening combs require micro pumps to be able to continuously deliver fluids in a constant and small amount to ensure the straightening effect. However, in the prior art, the speed of the motor in the micro pump is usually reduced to reduce the speed of the motor driving the fluid flow. However, since the flow of the fluid needs to be kept constant, when the motor is loaded, reducing the speed of the motor makes the output power of the motor be significantly affected, resulting in unstable power driving the fluid flow, making it difficult to ensure uniform and constant outflow of the fluid, affecting the straightening effect.

[0044] The utility model provides a series water channel micro pump.

[0045] See also Figures 1 to 4 In one embodiment of the utility model, the series water circuit micro pump comprises:

[0046] A drive assembly, the drive assembly is connected to a mounting seat 300;

[0047] A swinging member 400, which is disposed in the mounting seat 300 and is in transmission connection with the driving assembly. The swinging member 400 is provided with two traction parts 410 and can swing eccentrically around the output shaft of the driving assembly;

[0048] The leather cup member 500 is disposed in the mounting seat 300. The leather cup member 500 has two leather cup portions 510. The bottoms of the two leather cup portions 510 are respectively connected to the corresponding traction portions 410.

[0049] The valve plate 600 is covered on the mounting seat 300, and the openings of the two leather cups 510 are sealed and covered on the valve plate 600 to form a liquid inlet cavity 660 and a liquid outlet cavity 670. The valve plate 600 is provided with a first liquid hole 610 and a second liquid hole 620; and

[0050] The tube shell 700 is covered on the side of the valve plate 600 away from the leather cup member 500. The tube shell 700 is provided with a liquid inlet pipe 710 and a liquid outlet pipe 730. The liquid inlet pipe 710 is unidirectionally connected to the liquid inlet cavity 660, and the liquid outlet cavity 670 is unidirectionally connected to the liquid outlet pipe 730. The side of the valve plate 600 away from the leather cup member 500 forms a liquid cavity 740 with the tube shell 700;

[0051] The liquid passage cavity 740 is connected to the liquid outlet cavity 670 through the first liquid passage hole 610 and is connected to the liquid inlet cavity 660 through the second liquid passage hole 620 . The first liquid passage hole 610 and the second liquid passage hole 620 are respectively disposed adjacent to opposite side walls of the liquid passage cavity 740 .

[0052] The technical solution of the utility model drives the swinging member 400 to swing eccentrically around its output shaft through a driving assembly, so that the two traction parts 410 reciprocate alternately toward the corresponding leather cup parts 510, and the leather cup member 500 remains stable in the position of the mounting seat 300 and fits the surface of the valve plate 600. Driven by the traction part 410, the two leather cup parts 510 are deformed alternately to achieve alternating changes in the spatial sizes of the liquid inlet chamber 660 and the liquid outlet chamber 670. In this way, the space of the liquid inlet chamber 660 is first increased, and the fluid is sucked in from the liquid inlet pipe 710. At the same time, the space of the liquid outlet chamber 670 is reduced, and the fluid in the liquid outlet chamber 670 is discharged from the liquid outlet pipe 730; then, the space of the liquid inlet chamber 660 is reduced, and the fluid in the liquid inlet chamber 660 is filled with liquid. The fluid enters the liquid passage chamber 740 on the other side of the valve plate 600 from the second liquid passage hole 620, and flows from one side wall of the liquid passage chamber 740 to the opposite other side wall. At the same time, the space of the liquid outlet chamber 670 increases, and the fluid in the liquid passage chamber 740 is sucked from the first liquid passage hole 610 into the liquid outlet chamber 670 on the other side of the valve plate 600; it is presented as follows: the fluid enters the liquid inlet chamber 660 from the liquid inlet pipe 710, enters the liquid passage chamber 740 on the other side from the liquid inlet chamber 660 from the second liquid passage hole 620, and after flowing in the liquid passage chamber 740 for a long flow path, enters the liquid outlet chamber 670 on the other side from the first liquid passage hole 610 from the liquid passage chamber 740, and is finally discharged from the liquid outlet chamber 670 from the liquid outlet pipe 730, forming a series water path with a longer path. In this way, while the output power of the driving member 100 remains stable, the flow path length of the fluid is increased, and the reversing buffering effect of the liquid inlet chamber 660, the liquid passage chamber 740 and the liquid outlet chamber 670 is sequentially provided to reduce the flow velocity of the fluid and effectively ensure the flow stability of the fluid, so that the fluid maintains the rated flow accuracy and improves the user experience.

[0053] Among them, the liquid inlet hole 640 between the liquid inlet pipe 710 and the liquid inlet chamber 660 is a one-way hole, and the fluid can only flow from the liquid inlet pipe 710 to the liquid inlet chamber 660. Similarly, the first liquid through hole 610 between the liquid through chamber 740 and the liquid outlet chamber 670 is a one-way hole, and the fluid can only flow from the liquid through chamber 740 to the liquid outlet chamber 670. The liquid outlet hole 650 between the liquid outlet chamber 670 and the liquid outlet pipe 730 is a one-way hole, and the fluid can only flow from the liquid outlet chamber 670 to the liquid outlet pipe 730, and then flow out of the series water circuit micro pump from the liquid outlet pipe 730, and the two leather cup parts 510 of the leather cup part 500 alternately control the fluid in and out of the liquid inlet chamber 660 and the liquid outlet chamber 670, thereby realizing low-flow flow control of the fluid. In addition, during the flow of the fluid, it is necessary to fill the liquid inlet chamber 660, the liquid outlet chamber 740 and the liquid outlet chamber 670 in sequence to achieve a long-distance and multiple buffering deceleration effect, avoid cross-flow during the flow of the fluid, and ensure the constant flow of the fluid, thereby promoting a low flow rate, low flow, and stable flow effect of the fluid.

[0054] Without loss of generality, Figure 1As shown, the direction in which the fluid flows from the liquid inlet pipe 710 into the liquid inlet chamber 660 is opposite to the direction in which the fluid flows from the liquid inlet chamber 660 into the liquid passage chamber 740, presenting a reversal flow effect. Similarly, the direction in which the fluid flows from the liquid passage chamber 740 to the liquid outlet chamber 670 is opposite to the direction in which the fluid flows from the liquid outlet chamber 670 to the liquid outlet pipe 730, presenting a reversal flow effect, so that the fluid needs to flow back and forth multiple times between the tube shell 700 and the valve plate 600, thereby slowing down the flow speed of the fluid and avoiding uneven flow rate or flow.

[0055] In one embodiment, please refer to Figure 2 and Figure 3 , the connection between the liquid outlet pipe 730 and the liquid outlet cavity 670 is arranged near the liquid inlet cavity 660. As for the liquid outlet cavity 670, the connection between the liquid outlet pipe 730 and the liquid outlet cavity 670 and the first liquid hole 610 are respectively arranged adjacent to the opposite side walls of the liquid outlet cavity 670. In this way, the connection between the liquid outlet pipe 730 and the liquid outlet cavity 670 is arranged near the liquid inlet cavity 660, which increases the flow path of the fluid flowing in the liquid outlet cavity 670, and then slows down the flow rate of the fluid when the output power of the driving component is kept constant, ensuring the uniformity and stability of the fluid flow.

[0056] Similarly, in this embodiment, please refer to Figure 2 , Figure 3 and Figure 7 , the first liquid passage hole 610 is arranged away from the liquid inlet cavity 660. It should be noted that the liquid inlet chamber 660 and the liquid outlet chamber 670 are on the same side of the valve plate 600, and the liquid passage chamber 740 is on the other side of the valve plate 600, and in the thickness direction of the valve plate 600, the projection surface of the liquid passage chamber 740 can cover the projection surface of the liquid outlet chamber 670. In this way, the first liquid passage hole 610 is set at a position far away from the liquid inlet chamber 660, both relative to the liquid outlet chamber 670 and the liquid passage chamber 740, so that the flow path of the fluid flowing from the second liquid passage hole 620 to the first liquid passage hole 610 reaches the longest state, and after flowing from the first liquid passage hole 610 to the liquid outlet chamber 670, it needs to return to flow to the liquid outlet pipe 730, which is manifested as: the flow direction of the fluid in the liquid passage chamber 740 is opposite to the flow direction of the fluid in the liquid outlet chamber 670, which not only increases the flow path of the fluid flow, but also slows down the flow speed of the fluid by setting the re-return flow, and ensures the uniformity and stability of the fluid flow when the output power of the drive component remains constant. Of course, in other embodiments, the connection point between the liquid outlet pipe 730 and the liquid outlet cavity 670 may also be arranged away from the liquid inlet cavity 660 , and the first liquid passage hole 610 may also be arranged close to the liquid inlet cavity 660 .

[0057] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7, the connection point between the liquid inlet pipe 710 and the liquid inlet cavity 660 is arranged far away from the liquid outlet cavity 670. As far as the liquid inlet cavity 660 is concerned, the connection point between the liquid inlet pipe 710 and the liquid inlet cavity 660 and the second liquid passage hole 620 are respectively arranged adjacent to the opposite side walls of the liquid inlet cavity 660. It can be understood that after the fluid enters the liquid inlet cavity 660 from the liquid inlet pipe 710, it needs to flow in the liquid inlet cavity 660 to the liquid outlet cavity 670 before it can enter the liquid passage cavity 740 from the second liquid passage hole 620, thereby increasing the flow path of the fluid flowing in the liquid inlet cavity 660, and then slowing down the flow rate of the fluid when the output power of the driving component remains constant, thereby ensuring the uniformity and stability of the fluid flow.

[0058] Similarly, in this embodiment, please refer to Figure 2 , Figure 3 and Figure 7 , the second liquid hole 620 is arranged close to the liquid outlet chamber 670. In this way, the fluid can be guided to flow in the direction of the liquid outlet chamber 670 to avoid the vortex phenomenon of reverse flow. At the same time, the through holes for outflow in the liquid inlet chamber 660 and the liquid outlet chamber 670 are arranged adjacent to each other, while the through holes for inflow are arranged far away from each other. The swing center of the swing member 400 corresponds to the middle of the liquid outlet chamber 670 and the liquid inlet chamber 660, thereby ensuring that the inflow and outflow drive of the liquid inlet chamber 660 and the liquid outlet chamber 670 is adapted to the eccentric swinging action of the two traction parts 410, avoiding deviations in the driving force flowing into or out of the liquid inlet chamber 660 and the liquid outlet chamber 670, resulting in uneven flow velocity such as cross-flow of the fluid, thereby ensuring the uniformity and stability of the fluid flow. Of course, in other embodiments, the second liquid hole 620 can also be arranged far away from the liquid outlet chamber 670, and the connection between the liquid inlet pipe 710 and the liquid inlet chamber 660 can also be arranged close to the liquid inlet chamber 660.

[0059] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 7 A liquid inlet buffer chamber 720 and a liquid outlet buffer chamber 631 are also formed between the tube shell 700 and the valve plate 600. The liquid inlet pipe 710 is connected to the liquid inlet chamber 660 through the liquid inlet buffer chamber 720, and the liquid outlet chamber 670 is connected to the liquid outlet pipe 730 through the liquid outlet buffer chamber 631. It can be understood that before the fluid flows into the liquid inlet chamber 660, the liquid inlet buffer chamber 720 is first filled. Similarly, before the fluid flows out of the liquid outlet pipe 730, the liquid outlet buffer chamber 631 is first filled, thereby further buffering the flow of the fluid to achieve a deceleration effect, avoid cross-flow during the flow of the fluid, ensure the constant flow of the fluid, and promote low flow rate, low flow, and stable flow of the fluid.

[0060] Further, in this embodiment, please refer to Figure 3 , Figure 7 and Figure 8, a ring protrusion 630 is provided on the side of the valve plate 600 facing the tube shell 700, and the tube shell 700 covers the ring protrusion 630 to form a liquid outlet buffer chamber 631, and the liquid passage chamber 740 is arranged around the outer periphery of the ring protrusion 630, and the first liquid passage hole 610 and the second liquid passage hole 620 are respectively arranged at the radial ends of the liquid passage chamber 740. It can be understood that the ring protrusion 630 has an interception effect on the fluid in the linear distance between the first liquid passage hole 610 and the second liquid passage hole 620, so that the fluid needs to change the flow direction and flow along the periphery of the ring protrusion 630, and then enter the liquid outlet chamber 670 from the first liquid passage hole 610. In this way, the ring protrusion 630 increases the flow path length of the fluid in the liquid passage chamber 740, thereby reducing the flow rate of the fluid, and realizing more accurate control of the fluid flow. In addition, the liquid outlet buffer chamber 631 is formed in the annular protrusion 630, that is, the middle part of the liquid passage chamber 740 gives way to the liquid outlet buffer chamber 631, which realizes the reversal of fluid flow while reducing the volume of the series water circuit micro pump, thereby ensuring miniaturization. Without loss of generality, a pressure ring is provided at the end of the annular protrusion 630. After the valve plate 600 and the tube shell 700 are connected, the tube shell 700 presses the pressure ring to ensure the sealing of the liquid outlet buffer chamber 631 at the joint between the valve plate 600 and the tube shell 700. Of course, in other embodiments, the liquid outlet buffer chamber 631 and the liquid passage chamber 740 can also be independently provided.

[0061] Further, in this embodiment, please refer to Figures 3 to 7The valve plate 600 is provided with a liquid inlet hole 640 corresponding to the liquid inlet buffer chamber 720 to connect with the liquid inlet chamber 660, and is provided with a liquid outlet hole 650 corresponding to the liquid outlet buffer chamber 631 to connect with the liquid outlet chamber 670. The series water circuit micro pump is provided with a one-way valve plate 690 corresponding to the liquid outlet buffer chamber 631, the liquid outlet chamber 670 and the liquid inlet chamber 660. The one-way valve plate 690 can be movably arranged on the valve plate 600, and can cover the adjacent first liquid hole 610, the liquid inlet hole 640 or the liquid outlet hole 650 to limit the flow direction of the fluid. Without loss of generality, the one-way valve plate 690 is provided with a sheet-like flange in the cavity downstream of the fluid flow, and a movable hole is provided at the position of the adjacent through hole, the rod of the one-way valve plate 690 is penetrated through the movable hole, and a limit head is provided in the cavity upstream of the fluid flow. When the fluid flows from the upstream cavity to the downstream cavity, the fluid rushes through the liquid hole to open the sheet-like flange of the one-way valve plate 690. When the fluid wants to flow back from the downstream cavity to the upstream cavity, under the action of the fluid pressure, the sheet-like flange of the one-way valve plate 690 will fit tightly against the cavity wall of the downstream cavity, and then tightly seal the liquid hole to prevent fluid backflow and achieve the effect of one-way conduction. It can be understood that between the liquid inlet buffer chamber 720 and the liquid inlet chamber 660, the sheet-shaped flange of the one-way valve plate 690 is located in the liquid inlet chamber 660, and its stem portion is arranged adjacent to the liquid inlet hole 640, so as to ensure that the fluid in the liquid inlet buffer chamber 720 can stably flow into the liquid inlet chamber 660, and the fluid in the liquid inlet chamber 660 cannot flow back to the liquid inlet buffer chamber 720; similarly, between the liquid passage chamber 740 and the liquid outlet chamber 670, the sheet-shaped flange of the one-way valve plate 690 is located in the liquid outlet chamber 670, and its stem portion is arranged adjacent to the first liquid passage hole 610, so as to ensure that the fluid in the liquid passage chamber 740 can The fluid in the liquid outlet chamber 670 can stably flow into the liquid outlet chamber 670, and the fluid in the liquid outlet chamber 670 cannot flow back to the liquid passage chamber 740; similarly, between the liquid outlet chamber 670 and the liquid outlet buffer chamber 631, the sheet-shaped flange of the one-way valve plate 690 is located in the liquid outlet buffer chamber 631, and its rod portion is arranged adjacent to the liquid outlet hole 650, to ensure that the fluid in the liquid outlet chamber 670 can stably flow into the liquid outlet buffer chamber 631, and the fluid in the liquid outlet buffer chamber 631 cannot flow back to the liquid outlet chamber 670, thereby limiting the flow direction of the fluid in the liquid inlet hole 640, the liquid outlet hole 650 and the first liquid passage hole 610 on the valve plate 600. Among them, at the periphery of the liquid inlet buffer chamber 720 and the liquid passage chamber 740, a pressure rib 760 is provided on the side of the tube shell 700 facing the valve plate 600. After the valve plate 600 and the tube shell 700 are connected, the tube shell 700 presses the pressure rib 760 to ensure the sealing of the liquid inlet buffer chamber 720 and the liquid passage chamber 740 at the joint between the valve plate 600 and the tube shell 700. Of course, in other embodiments, a one-way valve flap can also be provided around the liquid inlet hole 640, the liquid outlet hole 650 and the first liquid passage hole 610, and the valve flap opens and closes toward the downstream cavity.

[0062] In one embodiment, please refer to Figures 4 to 8, the valve plate 600 is provided with a foolproof groove 680 on one side facing the tube shell 700, and the tube shell 700 is provided with a foolproof convex portion 750 corresponding to the foolproof groove 680, and the foolproof convex portion 750 is clamped in the foolproof groove 680. It can be understood that the concave and convex matching at specific positions ensures that the valve plate 600 and the tube shell 700 can only be connected in a specific posture, avoiding the reverse installation or inverted installation, which causes the liquid inlet and the liquid outlet to be reversed, or the inability to adapt to enclose the liquid inlet buffer chamber 720, the liquid passage chamber 740 and the liquid outlet buffer chamber 631, thereby facilitating the assembly of the series water circuit micro pump. Without loss of generality, in the present embodiment, the valve plate 600 is circumferentially provided with stud holes, the mounting seat 300 is circumferentially provided with screw holes on the side wall corresponding to the leather cup part 500, the stud holes and the screw holes are coaxially arranged, the mounting seat 300, the opening position of the leather cup part 510, the valve plate 600, and the tube shell 700 are arranged in sequence, and after the stud holes and the screw holes are aligned as the center, they are connected by means of screw locking, so as to realize one-time press-fitting of the series water circuit micro pump, thereby improving the assembly convenience of the series water circuit micro pump.

[0063] In one embodiment, please refer to Figures 2 to 6 , the swing member 400 includes a swing rod 420 connected between the two traction parts 410, the swing rod 420 is tilted relative to the output shaft of the driving assembly, the output shaft sleeve of the driving assembly is provided with an eccentric 210, the eccentric 210 is provided with a limiting hole 211 extending obliquely relative to the output shaft, and the swing rod 420 is clamped in the limiting hole 211. It can be understood that when the output shaft of the driving assembly rotates, the eccentric 210 rotates synchronously, and then drives the swing rod 420 to continuously change its position in the circumferential direction through the limiting hole 211. In this process, the swing rod 420 is equivalent to a conical swing around the output shaft of the driving assembly. Since the swing rod 420 is fixedly connected to the two traction parts 410, the two traction parts 410 swing synchronously with the swing rod 420, realizing the alternating reciprocating motion of the two in the direction of the output shaft of the driving assembly, so as to alternately switch the volume changes of the liquid inlet chamber 660 and the liquid outlet chamber 670, and ensure the stability and continuity of the fluid flow. Of course, in other embodiments, an eccentric wheel may be sleeved on the output shaft of the driving assembly, and a connecting piece may be provided on the periphery of the eccentric wheel, and the connecting piece may be connected to the swing rod 420 to realize the eccentric swing of the swing rod 420 .

[0064] Without loss of generality, in this embodiment, please refer to Figures 4 to 6 The installation comprises a base 310 connected to the driving assembly and a mounting cover 320 for pressing the leather cup part 500 against the valve plate 600. The eccentric part 210, the swing part 400 and the rod body part 520 are all arranged in a cavity enclosed by the mounting cover 320 and the base 310, and two avoidance holes are provided on the mounting cover 320 to allow the leather cup part 510 to cover the valve plate 600 tightly. In this way, the mounting seat 300 is divided into the base 310 and the mounting cover 320, which is convenient for the molding of the two and the assembly of the mounting seat 300.

[0065] In one embodiment, please refer to Figures 2 to 6 The cup member 500 further comprises a rod body 520 disposed at the bottom of the cup portion 510. The rod body 520 and the cup portion 510 are integrally formed. A clamping joint 521 is disposed at one end of the rod body 520 away from the corresponding cup portion 510. The traction portion 410 is provided with a clamping hole 411, and the clamping joint 521 is clamped in the clamping hole 411. In this way, in the process of the swing member 400 pulling the rod body 520 to deflect, the rod body 520 can synchronously drive the cup portion 510 to deform alternately corresponding to the liquid inlet chamber 660 and the liquid outlet chamber 670 in real time, thereby avoiding the problem of the rod body 520 and the cup portion 510 deflecting asynchronously due to the loose connection problem, thereby ensuring that the power from the driving component can be stably transmitted to the cup portion 510, and ensuring the stability of the fluid flowing from the liquid inlet chamber 660 to the liquid passage chamber 740, and then flowing from the liquid passage chamber 740 to the liquid outlet chamber 6706. At the same time, the diameter of the clamping joint 521 is larger than the aperture of the clamping hole 411, and the clamping joint 521 moves in the clamping hole 411 without falling out of the clamping hole 411. In the process of the swinging member 400 moving with the eccentric member 210, the angle between the rod body 520 and the swinging member 400 can change, so that the swinging member 400 can pull the rod body 520 to swing eccentrically, thereby ensuring the traction of the leather cup 510 to alternately deform, causing the space of the liquid inlet chamber 660 and the space of the liquid outlet chamber 670 to alternately change, and realizing the transportation of the fluid. Of course, in other embodiments, the end of the rod body 520 is set as a ball head, and the corresponding traction part 410 is provided with a spherical groove, and the ball head movement limit is located in the spherical groove to ensure that the rod body 520 can swing eccentrically around the output shaft of the drive assembly.

[0066] In one embodiment, please refer to Figures 2 to 4 The driving assembly includes a driving member 100 and a reducer 200 which are transmission-connected to each other. The reducer 200 is transmission-connected to a swing member 400 , and the swing member 400 can swing eccentrically around the output shaft of the reducer 200 . It can be understood that the reducer 200 can reduce the speed of the output shaft of the drive assembly without changing the output power of the drive member 100. In this way, under the action of the reducer 200, the speed of the eccentric swing of the swing member 400 is reduced, thereby reducing the flow rate of the fluid driven by the leather cup part 510. At the same time, the drive member 100 has high kinetic energy storage, and the reducer 200 does not change the power output of the drive member 100, thereby ensuring the load-bearing capacity of the leather cup part 510. After loading, the influence on the speed of the drive member 100 is weak, thereby ensuring that the leather cup part 510 has a stable and sufficient driving force to drive the fluid to flow in a unidirectional and stable manner from the liquid inlet buffer chamber 720, the liquid inlet chamber 660, the liquid passage chamber 740, the liquid outlet chamber 670, and the liquid outlet buffer chamber 631 in sequence, so that the fluid can flow constantly and evenly, that is, maintain the rated flow accuracy. It should be noted that the drive member 100 is a motor, a cylinder or an oil cylinder, and the present embodiment is a motor.

[0067] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A series water circuit micro pump, characterized in that: include: A drive assembly, wherein the drive assembly is connected to a mounting seat; A swinging member, the swinging member is arranged in the mounting seat and is drivingly connected to the driving assembly, the swinging member is provided with two traction parts, and can swing eccentrically around the output shaft of the driving assembly; A leather cup member is arranged in the mounting seat, the leather cup member is provided with two leather cup parts, and the bottoms of the two leather cup parts are respectively connected to the corresponding traction parts; A valve plate, which is covered on the mounting seat, and the opening sealing covers of the two leather cup parts are arranged on the valve plate to form a liquid inlet cavity and a liquid outlet cavity, and the valve plate is provided with a first liquid through hole and a second liquid through hole; as well as A tube shell, which is covered on the side of the valve plate away from the leather cup, and the tube shell is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is unidirectionally connected to the liquid inlet cavity, the liquid outlet cavity is unidirectionally connected to the liquid outlet pipe, and the side of the valve plate away from the leather cup forms a liquid cavity with the tube shell; The liquid passage cavity is connected to the liquid outlet cavity through the first liquid passage hole, and is connected to the liquid inlet cavity through the second liquid passage hole. The first liquid passage hole and the second liquid passage hole are respectively arranged adjacent to opposite side walls of the liquid passage cavity.

2. The tandem water circuit micro pump according to claim 1, characterized in that: The connecting part between the liquid outlet pipe and the liquid outlet cavity is arranged close to the liquid inlet cavity; And / or, the first liquid passage hole is arranged away from the liquid inlet cavity.

3. The tandem water circuit micro pump according to claim 1, characterized in that: The connecting point between the liquid inlet pipe and the liquid inlet cavity is arranged away from the liquid outlet cavity; And / or, the second liquid passage hole is arranged close to the liquid outlet cavity.

4. The tandem water circuit micro pump according to claim 1, characterized in that: A liquid inlet buffer cavity and a liquid outlet buffer cavity are also formed between the tube shell and the valve plate. The liquid inlet pipe is connected to the liquid inlet cavity through the liquid inlet buffer cavity, and the liquid outlet cavity is connected to the liquid outlet pipe through the liquid outlet buffer cavity.

5. The tandem water circuit micro pump according to claim 4, characterized in that: The valve plate is provided with an annular protrusion on one side facing the tube shell, and the tube shell covers the annular protrusion to form the liquid outlet buffer chamber. The liquid passage chamber is arranged around the outer circumference of the annular protrusion, and the first liquid passage hole and the second liquid passage hole are respectively arranged at the radial ends of the liquid passage chamber.

6. The tandem water circuit micro pump according to claim 4, characterized in that: The valve plate is provided with a liquid inlet hole corresponding to the liquid inlet buffer chamber to connect with the liquid inlet chamber, and is provided with a liquid outlet hole corresponding to the liquid outlet buffer chamber to connect with the liquid outlet chamber. The series water circuit micro pump is provided with a one-way valve sheet corresponding to the liquid outlet buffer chamber, the liquid outlet chamber and the liquid inlet chamber. The one-way valve sheet can be movably arranged on the valve plate and can cover the adjacent first liquid hole, the liquid inlet hole or the liquid outlet hole to limit the flow direction of the fluid.

7. The serial water circuit micro pump according to claim 1, characterized in that: The valve plate is provided with an anti-idiot groove on one side facing the tube shell, and the tube shell is provided with an anti-idiot convex portion corresponding to the anti-idiot groove, and the anti-idiot convex portion is clamped in the anti-idiot groove.

8. The serial water circuit micro pump according to claim 1, characterized in that: The swing member includes a swing rod connected between the two traction parts, the swing rod is tilted relative to the output shaft of the driving assembly, the output shaft sleeve of the driving assembly is provided with an eccentric member, the eccentric member is provided with a limiting hole extending obliquely relative to the output shaft, and the swing rod is clamped in the limiting hole.

9. The serial water circuit micro pump according to claim 1, characterized in that: The leather cup part also includes a rod body portion arranged at the bottom of the leather cup portion, the rod body portion and the leather cup portion are integrally formed, a clamping joint is provided at one end of the rod body portion away from the corresponding leather cup portion, the traction portion is provided with a clamping hole, and the clamping joint is clamped in the clamping hole.

10. The series water circuit micro pump according to any one of claims 1 to 9, characterized in that: The driving assembly comprises a driving member and a reducer which are transmission-connected to each other. The reducer is transmission-connected to the swing member, and the swing member can swing eccentrically around the output shaft of the reducer.

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