A micro water pump capable of controlling water inflow

Abstract

The utility model discloses a miniature water pump of controllable water inlet capacity relates to miniature water pump technical field, including pump water subassembly, negative pressure valve and detection component, the top of pump water subassembly is provided with negative pressure valve. After the water inlet pipe is connected with water source, can make high pressure water along the water inlet pipe and flow into the inside of negative pressure valve, starts pump water subassembly can pump out the gas in the inside of negative pressure chamber, thereby make the air pressure in the negative pressure chamber reduce, because the top cap is provided with the air hole, make the outside air pass through the air hole and enter the space between the top cap and negative pressure diaphragm, negative pressure diaphragm is pressed down under the action of atmospheric pressure at this moment, make it can extrude the thimble board, make the pressing plate of thimble board top can expose the water inlet tank when moving, thereby can realize water inlet, and filter through the filter screen, make when using can need how much water, beat how much water, so that can have better water inlet capacity control effect.

Description

Technical Field

[0001] This utility model relates to the field of micro water pump technology, specifically a micro water pump with controllable water intake. Background Technology

[0002] Miniature water pumps are small-sized pumps with relatively low flow rate and head. With their portability, low power consumption and flexible applicability, they play an important role in many fields. They convert electrical energy into liquid kinetic energy to achieve directional delivery, pressure increase and circulation of liquids. They are suitable for scenarios such as liquid transfer and pipeline pressurization.

[0003] When existing micro water pumps are in use, they generally cause continuous water intake after startup, making it difficult to control the water intake. This continuous water intake can lead to fatigue damage to the internal impeller, and the difficulty in controlling the water intake can also cause water hammer to affect the micro water pump, making it inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a micro water pump with controllable water intake.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a micro water pump with controllable water intake, comprising a pumping assembly, a negative pressure valve, and a detection assembly.

[0006] As described above, a negative pressure valve is provided at the top of the water pump assembly, a detection component is provided on one side of the negative pressure valve, an outlet pipe is provided on the side of the negative pressure valve near the detection component, and an inlet pipe is provided on the side of the negative pressure valve away from the outlet pipe. The negative pressure valve is equipped with a ejector plate, one end of which is connected to a spring, and one end of which is equipped with a filter screen. Limiting balls are provided on both sides of the ejector plate, and a limiting post is provided between the ejector plate and the negative pressure valve.

[0007] As described above, the negative pressure valve is provided with a top cover at its top end, and a middle cover and a bottom cover are provided at the bottom end of the top cover.

[0008] As described above, a negative pressure diaphragm is provided at one end of the top cover, and the top cover, negative pressure diaphragm, middle cover and bottom cover are fixedly arranged in sequence from top to bottom, and air holes are provided on the top cover.

[0009] As described above, a magnet is provided at one end of the filter screen, and an impeller is provided at one end of the magnet. The impeller is pivotally connected inside the water outlet pipe, and the magnet is fixedly mounted on the impeller.

[0010] As described above, the negative pressure valve is provided with a valve plate at the bottom end, and a valve plate is provided at one end of the valve plate. A sealing gasket is fixedly provided between the valve plate and the valve plate.

[0011] As described above, one end of the valve plate is provided with uniformly distributed umbrella-shaped protrusions, and one end of the valve plate is provided with uniformly distributed leather cups, which are arranged in a circumferential array and connected together at their upper ends.

[0012] As described above, one end of the leather cup is provided with a cylinder, and the surface of the cylinder is provided with evenly distributed limiting grooves. The upper part of the leather cup is fixedly fitted into the limiting grooves. The cylinder is provided with a swing frame, and the surface of the swing frame is provided with evenly distributed sleeve holes. One end of the swing frame is provided with an eccentric wheel, and the eccentric wheel is provided with an inclined groove.

[0013] Compared with existing technologies, this micro water pump with controllable water inflow has the following advantages: This invention connects the inlet pipe to a water source, allowing high-pressure water to flow into the negative pressure valve. Activating the pump assembly pumps out the gas inside the negative pressure chamber, reducing its pressure to below atmospheric pressure. Because the top cover has vents, outside air enters the space between the top cover and the negative pressure diaphragm. Under atmospheric pressure, the diaphragm is pressed downwards, squeezing the ejector plate. This causes the pressure plate at the top of the ejector plate to expose the inlet tank, allowing water to enter. The water is then filtered through a filter screen, ensuring precise water flow control and preventing water hammer from affecting the micro pump.

[0014] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the negative pressure valve of this utility model; Figure 2 This is a three-dimensional structural diagram of the detection component of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the negative pressure valve of this utility model; Figure 4 This is a three-dimensional exploded view of the pump assembly of this utility model; Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Pump assembly; 2. Negative pressure valve; 3. Detection assembly; 4. Outlet pipe; 5. Inlet pipe; 6. Top cover; 7. Negative pressure diaphragm; 8. Spring; 9. Filter screen; 10. Magnet; 11. Impeller; 12. Valve plate; 13. Sealing gasket; 14. Valve plate; 15. Umbrella pin; 16. Leather cup; 17. Cylinder body; 18. Frame; 19. Eccentric wheel; 20. Ejector plate; 21. Limit ball; 22. Limit post. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-5 As shown, this utility model provides a technical solution: a micro water pump with controllable water intake, including a pumping assembly 1, a negative pressure valve 2, and a detection assembly 3.

[0019] like Figure 1 As shown, a negative pressure valve 2 is provided at the top of the water pump assembly 1, a detection assembly 3 is provided on one side of the negative pressure valve 2, an outlet pipe 4 is provided on the side of the negative pressure valve 2 close to the detection assembly 3, and an inlet pipe 5 is provided on the side of the negative pressure valve 2 away from the outlet pipe 4. The negative pressure valve 2 is equipped with a ejector plate 20. One end of the ejector plate 20 is connected to a spring 8. One end of the spring 8 is equipped with a filter screen 9. Limiting balls 21 are provided on both sides of the ejector plate 20. Limiting posts 22 are provided between the ejector plate 20 and the negative pressure valve 2.

[0020] The water pump assembly 1, which consists of a drive motor, an impeller 11, and a drive shaft, enables the water pump assembly 1 to pump out the gas inside the negative pressure chamber.

[0021] like Figure 3 As shown, the top of the negative pressure valve 2 is provided with a top cover 6, and the bottom of the top cover 6 is provided with a middle cover and a bottom cover.

[0022] After the gas inside the negative pressure chamber is pumped out by the water pump assembly 1, the negative pressure diaphragm 7 can be pressed downward under the action of atmospheric pressure.

[0023] like Figure 4As shown, a negative pressure diaphragm 7 is provided at one end of the top cover 6, and the top cover 6, negative pressure diaphragm 7, middle cover and bottom cover are fixedly arranged from top to bottom. An air hole is opened on the top cover 6. A magnet 10 is provided at one end of the filter screen 9, and an impeller 11 is provided at one end of the magnet 10. The impeller 11 is pivotally connected to the water outlet pipe 4, and the magnet 10 is fixedly arranged on the impeller 11.

[0024] The negative pressure diaphragm 7 is pressed down to compress the spring 8, so that when the spring 8 moves, it can drive the filter screen 9 to move, and the filter screen 9 can filter the water.

[0025] like Figure 4 As shown, a valve plate 12 is provided at the bottom of the negative pressure valve 2, a valve plate 14 is provided at one end of the valve plate 12, a sealing gasket 13 is fixedly provided between the valve plate 14 and the valve plate 12, a uniformly distributed umbrella-shaped pin 15 is provided at one end of the valve plate 14, and a uniformly distributed leather cup 16 is provided at one end of the valve plate 14, and the leather cup 16 are arranged in a circumferential array, with the upper ends of the leather cup 16 connected together.

[0026] The valve plate 14 is designed to provide vacuum protection and prevent water backflow.

[0027] like Figure 4 As shown, a cylinder 17 is provided at one end of the leather cup 16, and a uniformly distributed limiting groove is provided on the surface of the cylinder 17. The upper part of the leather cup 16 is fixedly sleeved in the limiting groove. A swing frame 18 is provided inside the cylinder 17, and a uniformly distributed sleeve hole is provided on the surface of the swing frame 18. An eccentric wheel 19 is provided at one end of the swing frame 18, and an inclined groove is provided inside the eccentric wheel 19.

[0028] The design of the leather cup 16 allows it to fit snugly against moving parts, preventing water leakage and providing good sealing performance.

[0029] like Figures 1-5As shown, after connecting the water inlet pipe 5 to the water source, high-pressure water can flow into the negative pressure valve 2 along the water inlet pipe 5, activating the water pump assembly 1, which pumps out the gas inside the negative pressure chamber, thereby reducing the gas pressure inside the negative pressure chamber to below the external atmospheric pressure. Since the top cover 6 has air holes, outside air enters the space between the top cover 6 and the negative pressure diaphragm 7 through the air holes. At this time, the negative pressure diaphragm 7 is pressed downwards under the action of atmospheric pressure, causing it to squeeze the ejector plate 20, allowing the ejector plate 20 to move. This movement of the ejector plate 20 allows it to... The spring 8 at the end is compressed, and the water inlet groove opened after the ejector plate 20 moves can be exposed, so that water can enter and be filtered through the filter screen 9. Conversely, the ejector plate 20 can be reset by the reset effect of the spring 8, thereby sealing the water inlet groove. This allows for the pumping of only the amount of water needed during use, resulting in a better water intake control effect. At the same time, the setting of the limiting ball 21 and the limiting post 22 can restrict the ejector plate 20 when there is no change in air pressure, preventing loosening and thus preventing external water hammer from affecting the micro water pump.

[0030] Both the umbrella pin 15 and the valve plate 12 function as one-way valves. The umbrella pin 15 ensures that liquid can only enter the inside of the cup 16 from the negative pressure chamber, while the valve plate 12 ensures that liquid can only enter the outlet chamber from inside the cup 16. The motor drives the eccentric wheel 19 to rotate, which in turn drives the swing frame 18 to rotate. The swing frame 18, in turn, drives the lower end of the cup 16 to reciprocate, simultaneously squeezing the lower end of the cup 16 up and down. When the swing frame 18 squeezes the cup 16 upward, air or liquid inside the cup 16 can be forced out through the valve plate 12 to the outlet chamber. When the swing frame 18 pulls the lower end of the cup 16 downward, a negative pressure is formed inside the cup 16, and liquid in the negative pressure chamber is forced into the cup 16 from the umbrella pin 15. This cycle repeats, drawing liquid from inside the negative pressure chamber to the outlet chamber, and finally out through the outlet pipe 4.

[0031] Working principle: After connecting the water inlet pipe 5 to the water source, high-pressure water flows into the negative pressure valve 2 along the water inlet pipe 5. Activating the pump assembly 1 pumps out the gas inside the negative pressure chamber, thereby reducing the air pressure inside the negative pressure chamber. Since the top cover 6 has an air hole, outside air enters the space between the top cover 6 and the negative pressure diaphragm 7 through the air hole. At this time, the negative pressure diaphragm 7 is pressed down under the action of atmospheric pressure, so that the negative pressure diaphragm 7 can squeeze the ejector plate 20 when it is pressed down, so that the ejector plate 20 can move. When the ejector plate 20 moves, it can squeeze the spring 8 at one end, and the water inlet groove opened after the ejector plate 20 moves can be exposed, so that water can enter and be filtered through the filter screen 9. So that the amount of water dispensed can be adjusted according to the amount of water needed, so as to have a good water inlet control effect. This can avoid the impact of external water hammer on the micro water pump, so that the micro water pump can have a good water inlet control effect when in use.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micro water pump with controllable water intake, comprising a pumping assembly (1), a negative pressure valve (2), and a detection assembly (3), characterized in that: The top of the pump assembly (1) is provided with a negative pressure valve (2), a detection assembly (3) is provided on one side of the negative pressure valve (2), a water outlet pipe (4) is provided on the side of the negative pressure valve (2) close to the detection assembly (3), and a water inlet pipe (5) is provided on the side of the negative pressure valve (2) away from the water outlet pipe (4). The negative pressure valve (2) is provided with a ejector plate (20), one end of which is connected to a spring (8), and one end of which is provided with a filter screen (9). Limiting balls (21) are provided on both sides of the ejector plate (20), and a limiting post (22) is provided between the ejector plate (20) and the negative pressure valve (2).

2. The micro water pump with controllable water inflow according to claim 1, characterized in that: The negative pressure valve (2) is provided with a top cover (6) at its top end, and a middle cover and a bottom cover are provided at the bottom end of the top cover (6).

3. A micro water pump with controllable water inflow according to claim 2, characterized in that: A negative pressure diaphragm (7) is provided at one end of the top cover (6), and the top cover (6), negative pressure diaphragm (7), middle cover and bottom cover are fixedly arranged from top to bottom. An air hole is provided on the top cover (6).

4. A micro water pump with controllable water inflow according to claim 3, characterized in that: A magnet (10) is provided at one end of the filter screen (9), and an impeller (11) is provided at one end of the magnet (10). The impeller (11) is pivotally connected to the water outlet pipe (4), and the magnet (10) is fixedly installed on the impeller (11).

5. A micro water pump with controllable water inflow according to claim 3, characterized in that: The negative pressure valve (2) is provided with a valve plate (12) at the bottom end, and a valve plate (14) is provided at one end of the valve plate (12). A sealing gasket (13) is fixedly provided between the valve plate (14) and the valve plate (12).

6. A micro water pump with controllable water inflow according to claim 5, characterized in that: One end of the valve plate (14) is provided with uniformly distributed umbrella-shaped protrusions (15), and one end of the valve plate (14) is provided with uniformly distributed leather cups (16), and the leather cups (16) are arranged in a circular array, with the upper ends of the leather cups (16) connected together.

7. A micro water pump with controllable water inflow according to claim 6, characterized in that: One end of the leather cup (16) is provided with a cylinder (17), and the surface of the cylinder (17) is provided with uniformly distributed limiting grooves. The upper part of the leather cup (16) is fixedly sleeved in the limiting grooves. The cylinder (17) is provided with a swing frame (18), and the surface of the swing frame (18) is provided with uniformly distributed sleeve holes. One end of the swing frame (18) is provided with an eccentric wheel (19), and the eccentric wheel (19) is provided with an inclined groove.

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