Efficient pump

Abstract

The utility model relates to an efficient pump, which relates to the technical field of micro fluid pumps, and comprises a pump head assembly for providing a fluid one-way flow channel and a pump body assembly for conveying fluid to flow from a water inlet flow channel to a water outlet flow channel. The pump body assembly comprises a driving motor, a base, a diaphragm seat and a diaphragm which are sequentially installed, an eccentric wheel is installed on an output shaft of the driving motor and provided with a swing rod used for being connected with the diaphragm, and the diaphragm is provided with four bag bodies. The diaphragm is provided with at least four bag bodies, so that the pressure required by deformation of a single bag body under the same flow requirement is reduced, the bag body deformation stability under low voltage is better, the efficiency loss of the pump can be reduced by improving the stability, and the comprehensive and efficient effects are achieved.

Description

Technical Field

[0001] This application relates to the technical field of microfluidic pumps, and in particular to a high-efficiency pump. Background Technology

[0002] A microfluidic pump is a device that transports fluids by periodically changing the volume of its reservoir. The fluid can be gas or liquid. When the fluid is liquid, microfluidic pumps are often core fluid transport components in fields such as water dispensers, coffee machines, and medical equipment; therefore, their efficient and stable operation directly affects the performance of the equipment.

[0003] Existing micro fluid pumps mainly rely on a motor to drive the deformation of the bladder. However, in actual use, unstable voltage and current conditions occasionally occur, resulting in unstable fluid delivery capacity of the bladder. In particular, it is very easy for the pump to fail to work under low voltage conditions, thus failing to deliver fluid. Utility Model Content

[0004] In order to reduce instability and improve efficiency, the purpose of this application is to provide a high-efficiency pump.

[0005] The high-efficiency pump provided in this application adopts the following technical solution:

[0006] A high-efficiency pump, comprising:

[0007] A pump head assembly provides a unidirectional flow path for fluid. The pump head assembly includes a pump cover, a spacer, and a valve seat, which are sequentially mounted. The valve seat has an inlet channel and an outlet channel, which are isolated from each other. The outlet channel has an outlet for connecting to the pump body assembly. An inlet check valve is installed in the inlet channel, and an outlet check valve is installed in the outlet channel for opening and closing the outlet. The spacer has a drain channel with a drain outlet connected to the outlet channel. A check valve is installed in the spacer for opening and closing the drain outlet.

[0008] A pump assembly for conveying fluid from an inlet channel to an outlet channel; the pump assembly includes a drive motor, a base, a diaphragm seat, and a diaphragm installed in sequence, the output shaft of the drive motor is equipped with an eccentric wheel, the eccentric wheel is equipped with a lever for connecting the diaphragm, and the diaphragm has multiple bladders.

[0009] By adopting the above technical solution, after the fluid enters the inlet channel from the pump cover, the motor drives multiple bladders of the diaphragm to periodically change their volume via an eccentric wheel and a rocker arm. The volume of a single bladder first increases to allow it to draw water from the inlet channel, and then the volume decreases to allow the water inside the bladder to be transported to the outlet channel. The outlet check valve in the outlet channel prevents water from flowing back into the bladder, instead allowing it to flow continuously into the drain channel. The water in the drain channel is then prevented from flowing back by a check valve.

[0010] The outlet check valve and non-return valve work together to improve the stability of fluid delivery in the high-efficiency pump and reduce delivery instability caused by low input voltage of the drive motor. Furthermore, the diaphragm has at least four bladders to reduce the pressure required for deformation of a single bladder under the same flow rate requirement, thereby improving the stability of bladder deformation under low voltage. This allows the high-efficiency pump to reduce pump efficiency loss by improving stability, thus achieving overall high efficiency.

[0011] Optionally, the septum may contain four vesicles.

[0012] By adopting the above technical solution, the arrangement of four bladders makes the overall structure of the high-efficiency pump symmetrical, which facilitates production and assembly while making the overall operating efficiency of the bladders more stable and efficient.

[0013] Optionally, the pump cover is equipped with an inlet pipe and a drain pipe, both of which are straight-insertion pipes.

[0014] By adopting the above technical solution, the straight-insertion pipe facilitates the installation of the high-efficiency pump, thereby improving the efficiency of assembling and using the high-efficiency pump.

[0015] Optionally, the check valve includes a stop plate and an elastic element that causes the stop plate to close the drain outlet.

[0016] By adopting the above technical solution, compared with the traditional water pump that only uses a stop plate to control the opening and closing of the drain outlet, the stop plate is driven by an elastic element to press and close the drain outlet, which improves the sealing effect of the stop plate, thereby further improving stability and reducing pump efficiency loss.

[0017] Optionally, the flow stop includes a mounting part and a deformation opening and closing part, the deformation opening and closing part is provided with a guide part, and the pump cover is provided with a guide part for cooperating with the guide part.

[0018] By adopting the above technical solution, the guide part and the guide part cooperate to limit the movement direction of the deformable opening and closing part, so that the deformable opening and closing part moves stably in the direction of approaching or moving away from the opening and closing part, thereby improving the stability of the sealing effect of the stop plate.

[0019] Optionally, the guide portion is slidably sleeved on the guide portion, and the elastic element is sleeved on the guide portion.

[0020] By adopting the above technical solution, the guiding part and the guide part work together to guide the movement direction of the deformation opening and closing part, while also restricting the deformation direction of the elastic element, thereby further improving the stability of the sealing effect of the stop plate.

[0021] Optionally, the pump cover is provided with a mounting groove for mounting the elastic element, the guide is located in the mounting groove, and the top of the guide extends into the drainage channel.

[0022] By adopting the above technical solution, the mounting groove limits the installation space of the elastic element to improve the installation stability of the elastic element, while the top of the guide extends into the drainage channel to increase the sliding distance when the guide and the guide engage.

[0023] Optionally, the drainage channel includes an opening and closing chamber and a drain chamber, with the deformable opening and closing part located inside the opening and closing chamber, and a pad provided inside the drain chamber, with the pad support mounting part located in the area of ​​the drain chamber.

[0024] By adopting the above technical solution, the pad supports the mounting part of the flow stop plate to limit the deformation of the mounting part into the drainage cavity. Therefore, the volume of the drainage cavity can be increased as much as possible during the design, thereby improving the efficiency of the high-efficiency pump.

[0025] Optionally, the side of the drain chamber facing the pump cover is provided with an insert groove for the end of the pad to be inserted.

[0026] By adopting the above technical solution, the mounting groove design facilitates the installation of the pad, thereby ensuring the effectiveness of supporting the flow-stopping plate.

[0027] Optionally, there are two mounting slots, which are located on two symmetrical inner walls of the drainage cavity. The mounting slots are located near the opening and closing cavity of the drainage cavity, and the two ends of the pad are respectively embedded in the two mounting slots.

[0028] By adopting the above technical solution, after the two ends of the pad are installed into the two mounting slots, they can completely support the part of the flow stop plate exposed in the drainage chamber. If the end face height of the pad is the same as the end face height of the drainage channel facing the pump cover, the pad can be used together with the pump cover to clamp the flow stop plate, so as to make the installation of the flow stop plate more stable.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The outlet check valve and non-return valve work together to improve the stability of fluid delivery in the high-efficiency pump and reduce delivery instability caused by low input voltage of the drive motor;

[0031] 2. The diaphragm has at least four bladders to reduce the pressure required for deformation of a single bladder under the same flow rate requirement, thereby improving the stability of bladder deformation at low voltage;

[0032] 3. The insertion tube facilitates the installation of the high-efficiency pump, thereby improving the efficiency of assembling and using the high-efficiency pump. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0034] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application;

[0035] Figure 3 This is a cross-sectional structural schematic diagram of the pump head assembly according to an embodiment of this application.

[0036] In the picture:

[0037] 1. Pump head assembly; 11. Pump cover; 111. Inlet pipe; 112. Drain pipe; 113. Guide section; 114. Mounting groove; 12. Spacer; 121. Drainage channel; 1211. Opening and closing chamber; 1212. Drainage chamber; 122. Pad; 123. Embedding groove; 13. Valve seat; 131. Inlet channel; 132. Outlet channel; 14. Inlet check valve; 15. Outlet check valve; 16. Check valve; 161. Flow stop plate; 1611. Mounting section; 1612. Deformation opening and closing section; 1613. Guide section; 162. Elastic element; 2. Pump body assembly; 21. Drive motor; 22. Base; 23. Diaphragm seat; 24. Diaphragm; 241. Bladder; 25. Rocker arm; 26. Eccentric wheel. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail below.

[0039] This application discloses a high-efficiency pump, mainly used for fluid transportation. The fluid transported by this high-efficiency pump can be gas or liquid. Although the description and claims of this application use water as the fluid, the use of gas and other liquids as the transportation medium is within the scope of protection of this application.

[0040] Reference Figure 1 and Figure 2 A high-efficiency pump includes a pump head assembly 1 and a pump body assembly 2. The pump head assembly 1 is used to provide a channel for unidirectional flow of fluid, and the pump body assembly 2 is used to deliver fluid so that the fluid flows unidirectionally within the pump head assembly 1.

[0041] Specifically, the pump head assembly 1 includes a pump cover 11, a spacer 12, a valve seat 13, an inlet check valve 14, an outlet check valve 15, and a check valve 16, while the pump body assembly 2 includes a drive motor 21, a base 22, a diaphragm seat 23, a diaphragm 24, a rocker arm 25, and an eccentric wheel 26.

[0042] A base 22 is mounted on the end of a drive motor 21, and the output shaft of the drive motor 21 is located inside the base 22. A diaphragm seat 23 is mounted on the base 22, a valve seat 13 is mounted on the base 22, a spacer 12 is mounted on the valve seat 13, and a pump cover 11 is mounted on the spacer 12. The base 22, diaphragm seat 23, valve seat 13, spacer 12, and pump cover 11 are connected by screws or clips. An eccentric wheel 26 is located inside the base 22 and mounted on the output shaft of the drive motor 21, and a rocker arm 25 is obliquely mounted on the eccentric wheel 26. A diaphragm 24 is mounted on the diaphragm seat 23 and pressed against it by the valve seat 13. The diaphragm 24 has multiple bladders 241, each of which is connected to the rocker arm 25 so that its volume can change periodically under the action of the rocker arm 25. In this example, the diaphragm 24 has four bladders 241. The arrangement of four bladders 241 makes the overall structure of the high-efficiency pump symmetrical, so as to reduce the pressure required for the deformation of a single bladder 241 under the same flow rate requirement, thereby making the deformation stability of the bladder 241 better under low voltage.

[0043] Reference Figure 3 In this embodiment, the fluid output flow path of the high-efficiency pump of this application is mainly concentrated in the area near the pump axis, while the fluid input flow path is mainly arranged around the outer ring of the fluid output flow path.

[0044] Reference Figure 2 and Figure 3 The pump cover 11 is provided with an inlet pipe 111 and a drain pipe 112. In this embodiment, the axis of the inlet pipe 111 and the axis of the drain pipe 112 are parallel, and both the inlet pipe 111 and the drain pipe 112 are straight-inserted pipes. Both the inlet pipe 111 and the drain pipe 112 are located on the side of the pump cover 11 away from the spacer 12. In other embodiments, the positional distribution of the inlet pipe 111 and the drain pipe 112 can be adjusted according to actual design needs.

[0045] The spacer 12 has mutually isolated water guide channels and drainage channels 121, and the valve seat 13 has mutually isolated water inlet channels 131 and water outlet channels 132. The water outlet channel 132 of the valve seat 13 is located near the axis of the pump. The water outlet channel 132 has multiple outlets, the number of which is the same as the number of diaphragm 24 bladders 241 and their positions correspond one-to-one. A one-way valve 15 is installed in the water outlet channel 132 for one-way opening and closing of the outlet. The water inlet channel 131 surrounds the outer ring of the water outlet channel 132. The water inlet channel 131 has multiple sets of inlets, each set of inlets having at least one outlet. The number of sets of inlets is the same as the number of diaphragm 24 bladders 241 and their positions correspond one-to-one. There can be multiple one-way valves 14, with one one-way valve 14 configured for each set of inlets.

[0046] When the fluid flows, the fluid passes sequentially through the inlet pipe 111, the guide channel, the inlet channel 131, the bladder 241, the outlet channel 132, and the drain channel 121 on the pump cover 11. The inlet check valve 14 restricts the fluid in the bladder 241 from flowing back to the inlet channel 131, and the outlet check valve 15 restricts the fluid in the outlet channel 132 from flowing back to the bladder 241.

[0047] Reference Figure 2 and Figure 3 To further improve the stability of the high-efficiency pump, a check valve 16 is configured in the drain channel 121.

[0048] Specifically, the drainage channel 121 includes an opening and closing chamber 1211 and a discharge chamber 1212. One end of the discharge chamber 1212 is connected to the opening and closing chamber 1211, and the other end is connected to the drain pipe 112 of the pump cover 11. The opening and closing chamber 1211 is located in the area near the axis of the pump, and the connection between the opening and closing chamber 1211 and the water outlet channel 132 is the drain outlet.

[0049] The check valve 16 includes a stop plate 161 and an elastic element 162 that drives the stop plate 161 to close the drain outlet. In this embodiment, the elastic element 162 is a spring. The stop plate 161 includes an integrally formed mounting portion 1611 and a deformable opening / closing portion 1612, with the mounting portion 1611 surrounding the deformable opening / closing portion 1612. The mounting portion 1611 is plate-shaped and is mounted on the spacer 12 and pressed against the pump cover 11. The deformable opening / closing portion 1612 is recessed into the area where the drain outlet is located within the opening / closing cavity 1211, and the end of the deformable opening / closing portion 1612 can completely block and close the drain outlet. To improve the stability of the deformable opening / closing portion 1612 in opening and closing the drain outlet, a guide portion 1613 is provided on the side of the deformable opening / closing portion 1612 facing the pump cover 11, and the pump cover 11 is provided with a guide portion 113 for cooperating with the guide portion 1613. In this embodiment, the pump cover 11 is provided with a mounting groove 114 for mounting the elastic member 162. The guide part 113 is located in the mounting groove 114, and the top end of the guide part 113 extends into the drainage channel 121. The guide part 1613 is slidably sleeved on the guide part 113, and the elastic member 162 is sleeved on the guide part 1613.

[0050] When the water pressure in the outlet channel 132 increases, the water can exert pressure on the deformation opening and closing part 1612 to overcome the elastic force of the elastic member 162, and the deformation opening and closing part 1612 moves along the guide part 113 in a direction away from the drain outlet to open the drain outlet; when the water pressure in the outlet channel 132 decreases, the elastic force of the elastic member 162 pushes the deformation opening and closing part 1612 in a direction closer to the drain outlet to close the drain outlet.

[0051] Reference Figure 2 and Figure 3Due to the influence of actual production and processing, the side of the drain cavity 1212 facing the pump cover 11 is open. Therefore, the mounting part 1611 of the flow stop 161 will be partially suspended in the drain cavity 1212, making it easy for the mounting part 1611 to deform into the drain cavity 1212. For this purpose, a pad 122 is provided on the spacer 12 to support the mounting part 1611 of the flow stop 161. Specifically, an insert groove 123 is provided on the inner wall of the drain cavity 1212. The insert groove 123 is located in the drain cavity 1212 near the opening and closing cavity 1211. The side of the insert groove 123 facing the pump cover 11 is open, and the end of the pad 122 is embedded in the insert groove 123. In this embodiment, there can be two insert grooves 123. The two insert grooves 123 are located on two symmetrical inner walls of the drain cavity 1212, and the two ends of the pad 122 are respectively embedded in the two insert grooves 123.

[0052] The implementation principle of a high-efficiency pump according to an embodiment of this application is as follows: When fluid flows, the fluid first enters the inlet channel 131 through the drain pipe 112 and the guide channel. When the volume of the bladder 241 increases, the bladder 241 draws fluid from the inlet channel 131. Due to the presence of the inlet check valve 14, the fluid in the bladder 241 is restricted from flowing back into the inlet channel 131. At this time, the volume of the bladder 241 decreases so that the fluid in the bladder 241 is squeezed into the outlet channel 132. The outlet check valve 15 in the outlet channel 132 restricts the fluid in the outlet channel 132 from flowing back into the bladder 241. When the water pressure in the bladder 241 increases to overcome the elastic force of the elastic element 162, the stop plate 161 opens the drain port, and the fluid flows into the opening and closing chamber 1211 through the drain port, and finally is discharged through the discharge chamber 1212 and the drain pipe 112.

[0053] The embodiments described herein are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A high-efficiency pump, characterized in that, include: The pump head assembly (1) and the pump body assembly (2) are provided. The pump head assembly (1) provides a unidirectional flow channel for fluid. The pump head assembly (1) includes a pump cover (11), a spacer (12), and a valve seat (13) installed in sequence. The valve seat (13) has an inlet channel (131) and an outlet channel (132), which are isolated from each other. The outlet channel (132) has a connection for connecting to the pump body assembly. The pump body assembly (2) has an outlet, the inlet channel (131) is equipped with an inlet check valve (14), and the outlet channel (132) is equipped with an outlet check valve (15) for opening and closing the outlet; the partition (12) has a drain channel (121), the drain channel (121) has a drain outlet communicating with the outlet channel (132); the partition (12) is equipped with a check valve (16) for opening and closing the drain outlet; The pump assembly (2) is used to transport fluid from the inlet channel (131) to the outlet channel (132); the pump assembly (2) includes a drive motor (21), a base (22), a diaphragm seat (23) and a diaphragm (24) installed in sequence. The output shaft of the drive motor (21) is equipped with an eccentric wheel (26), and the eccentric wheel (26) is equipped with a rocker arm (25) for connecting the diaphragm (24). The diaphragm (24) has multiple bladders (241).

2. The high-efficiency pump according to claim 1, characterized in that, The diaphragm (24) has four sacs (241).

3. The high-efficiency pump according to claim 1, characterized in that, The pump cover (11) is provided with an inlet pipe (111) and a drain pipe (112), both of which are straight-insertion pipes.

4. The high-efficiency pump according to claim 1, characterized in that, The check valve (16) includes a stop plate (161) and an elastic element (162) that causes the stop plate (161) to close the drain outlet.

5. A high-efficiency pump according to claim 4, characterized in that, The flow stop plate (161) includes a mounting part (1611) and a deformation opening and closing part (1612). The deformation opening and closing part (1612) is provided with a guide part (1613). The pump cover (11) is provided with a guide part (113) for cooperating with the guide part (1613).

6. A high-efficiency pump according to claim 5, characterized in that, The guide portion (1613) is slidably sleeved on the guide portion (113), and the elastic element (162) is sleeved on the guide portion (1613).

7. A high-efficiency pump according to claim 5, characterized in that, The pump cover (11) is provided with a mounting groove (114) for mounting the elastic element (162), the guide (113) is located in the mounting groove (114), and the top end of the guide (113) extends into the drainage channel (121).

8. A high-efficiency pump according to claim 5, characterized in that, The drainage channel (121) includes an opening and closing chamber (1211) and a drain chamber (1212). The deformable opening and closing part (1612) is located in the opening and closing chamber (1211). A pad (122) is provided in the drain chamber (1212). The pad (122) supports the area of ​​the mounting part (1611) located in the drain chamber (1212).

9. A high-efficiency pump according to claim 8, characterized in that, The drain cavity (1212) is provided with an insert groove (123) on the side facing the pump cover (11) for the end of the pad (122) to be inserted.

10. A high-efficiency pump according to claim 9, characterized in that, There are two mounting slots (123). The two mounting slots (123) are located on two symmetrical inner walls of the drain cavity (1212). The mounting slots (123) are located in the drain cavity (1212) near the opening and closing cavity (1211). The two ends of the pad (122) are respectively embedded in the two mounting slots (123).

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