Miniature water pump with flow meter and two-way non-return function

Abstract

The utility model relates to the technical field of fluid machinery, in particular to a miniature water pump with a flow meter and a bidirectional non-return function, which comprises a pump casing and a motor, the pump casing sequentially comprises an upper cover, a liquid separation cover, a middle plate, a valve plate, a cylinder body and a bottom cover from top to bottom, and an input connector and an output connector are fixedly mounted at the top of the upper cover. A flow detection assembly is arranged on one side of the input connector. According to the utility model, the defects in the prior art are overcome, the leather cup is matched with the circular motion of the motor, and the interior of the leather cup can do reciprocating motion, so that air at the drainage port I is compressed, positive pressure and vacuum are formed, water is extracted, and meanwhile, the umbrella pin can play a role in preventing backflow; when water entering the leather cup from the first drainage opening is compressed, the sealing gasket located at the second drainage opening can be jacked up and enters the second drainage opening, the second drainage opening is communicated with the second butt joint opening, and therefore the water can be conveyed to the output connector to be discharged, the sealing gasket can prevent backflow through the second drainage opening at the same time, and the bidirectional non-return effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid machinery, in particular to a micro water pump with a flow meter and a two-way check valve. Background Art

[0002] A micro water pump is a small-volume, small-flow water pump, usually used in laboratories, spraying, and other fields. Its working principle is to use the circular motion of the motor to make the diaphragm inside the water pump do reciprocating motion through a mechanical device, thereby compressing and stretching the air in the pump chamber to form positive pressure and vacuum, and realize water extraction and discharge;

[0003] Micro water pumps usually have a suction port and a discharge port, with a compact structure, small size, low noise, easy to carry and use, and low flow requirements. They can meet the needs of spraying and other occasions that require small flow, small volume and low noise.

[0004] The existing micro water pumps basically have no anti-backflow function and cannot achieve two-way check. An external flow meter is also required to detect the working status of the pump body. The external flow meter increases the assembly process and also increases the cost of related accessories. Therefore, a micro water pump with a flow meter and a two-way check is proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a micro water pump with a flow meter and a two-way check valve, which overcomes the deficiencies of the prior art and solves the problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro water pump with a flow meter and a two-way check valve, comprising a pump casing and a motor, wherein the pump casing comprises an upper cover, a liquid separation cover, a middle plate, a valve plate, a cylinder body and a bottom cover from top to bottom, an input connector and an output connector are fixedly installed on the top of the upper cover, a flow detection component is installed on one side of the input connector, a screw one is installed on the upper surface of the upper cover, the screw one passes through the liquid separation cover, the middle plate, the valve plate and the cylinder body in sequence and is threadedly connected to the bottom cover, and a two-way check valve component is provided inside the pump casing.

[0007] The flow detection component that is set up can accurately monitor the water flow flowing through the input connector, and there is no need for an external flow meter to detect the working status of the pump body. The two-way check component set inside the pump casing can prevent backflow in both the water inlet and outlet directions inside the pump casing, effectively preventing water backflow inside the pump casing.

[0008] As a preferred technical solution of the utility model, the flow detection component includes a shaft fixedly mounted on the inner wall of the input connector, a magnet rotatably mounted on the shaft, an impeller fixedly mounted on the outside of the magnet, and a Hall detection PCB board configured and mounted on the outside of the input connector.

[0009] The water flow entering through the input connector can drive the impeller to rotate when flowing through the impeller. The rotating impeller can drive the magnet to rotate synchronously. The rotating magnet can bring about changes in the direction of the magnetic field. With the help of the Hall detection PCB board, the size and direction of the magnetic field can be detected, and the detected signal can be converted into an electrical signal output. By measuring the output signal of the Hall element, the flow rate of the water pump can be determined.

[0010] As a preferred technical solution of the utility model, an upper cover sealing ring is arranged and installed between the upper cover and the liquid separating cover, a middle plate sealing gasket is arranged and installed between the liquid separating cover and the middle plate, a spring is arranged between the middle plate sealing gasket and the liquid separating cover, and docking interface 1 and docking interface 2 are respectively formed on the middle plate, docking interface 1 is located on the outside of the middle plate sealing gasket, and docking interface 2 is located on the inside of the middle plate sealing gasket.

[0011] The upper cover sealing ring can play a sealing role at the connection between the upper cover and the liquid separation cover, and the middle plate sealing gasket can separate the docking interface 1 and the docking interface 2. The docking interface 1 and the docking interface 2 can be connected to the input connector and the output connector respectively.

[0012] As a preferred technical solution of the utility model, a valve sheet is arranged and installed between the middle plate and the valve plate, a drainage port 2 is formed at the axis of the valve plate, and a drainage port 1 is formed around the drainage port 1.

[0013] The valve sheet can separate the drainage port 1 from the drainage port 2, the drainage port 1 is communicated with the docking port 1, and the drainage port 2 is communicated with the docking port 2.

[0014] As a preferred technical solution of the utility model, the two-way check assembly is composed of a sealing gasket installed inside the second drainage port and an umbrella tack installed inside the first drainage port, and a leather cup is installed inside the cylinder body.

[0015] Through the circular motion of the leather cup and the motor, the leather cup can be made to move back and forth, thereby compressing the air in the drainage port one, forming positive pressure and vacuum, and realizing water extraction. At the same time, the umbrella can prevent backflow. When the water entering the leather cup from the drainage port one is compressed, it can lift the sealing gasket at the drainage port two and enter the interior of the drainage port two. The drainage port two is connected to the docking port two.

[0016] As a preferred technical solution of the utility model, the inner bottom surface of the bottom cover is equipped with screw 2, the bottom cover is fixedly connected to the motor through the screw 2, and the bottom end of the motor is equipped with a power connection pin.

[0017] The motor can be connected to an external power line through the electrical pins.

[0018] As a preferred technical solution of the utility model, the output shaft of the motor is equipped with an eccentric wheel, the top of the eccentric wheel is connected to a swing frame, the top of the swing frame is formed with an assembly opening, and the swing frame is connected to the bottom of the leather cup through the assembly opening.

[0019] The rotation of the motor output shaft can drive the eccentric wheel to rotate synchronously, and the eccentrically rotating eccentric wheel can drive the swing frame to rotate reciprocatingly. The rotating swing frame can further drive the inside of the leather cup to perform reciprocating compression, thereby realizing the extraction of water.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] Through the circular motion of the leather cup and the motor, the leather cup can be made to move back and forth, thereby compressing the air in the drainage port one, forming positive pressure and vacuum, and realizing water extraction. At the same time, the tine can prevent backflow. The water entering the leather cup from the drainage port one can lift the sealing gasket at the drainage port two when compressed and enter the drainage port two. The drainage port two is connected to the docking port two, so that the water can be transported to the output connector for discharge. The sealing gasket can also prevent backflow through the drainage port two, realizing a two-way check effect. The water flow entering through the input connector can drive the impeller to rotate when flowing through the impeller. The rotating impeller can drive the magnet to rotate synchronously. The rotating magnet can bring about a change in the direction of the magnetic field. With the help of the Hall detection PCB board, the size and direction of the magnetic field can be detected, and the detected signal can be converted into an electrical signal output. By measuring the output signal of the Hall element, the flow rate of the water pump can be determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the upper cover assembly of the utility model;

[0023] Figure 2 This is a schematic diagram of the motor assembly of the utility model;

[0024] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;

[0025] Figure 4 This is a partial explosion diagram of the utility model. Figure 1 ;

[0026] Figure 5 This is a partial explosion diagram of the utility model. Figure 2 ;

[0027] Figure 6 This is a partial explosion diagram of the utility model. Figure 3 .

[0028] In the figure: 1. Screw 1; 2. Upper cover; 201. Input connector; 202. Output connector; 3. Hall detection PCB board; 4. Upper cover sealing ring; 5. Shaft; 6. Magnet; 7. Impeller; 8. Dispensing cover; 9. Spring; 10. Middle plate sealing gasket; 11. Middle plate; 12. Valve plate; 13. Sealing gasket; 14. Valve plate; 15. Umbrella; 16. Leather cup; 17. Cylinder body; 18. Pendulum frame; 19. Eccentric wheel; 20. Screw 2; 21. Bottom cover; 22. Motor. DETAILED DESCRIPTION

[0029] 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 in 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.

[0030] See also Figure 1-6 A micro water pump with a flow meter and a two-way check valve comprises a pump casing and a motor 22. The pump casing comprises an upper cover 2, a liquid separator cover 8, a middle plate 11, a valve plate 14, a cylinder body 17 and a bottom cover 21 from top to bottom. An input connector 201 and an output connector 202 are fixedly mounted on the top of the upper cover 2. A flow detection component is arranged on one side of the input connector 201. A screw 1 is arranged on the upper surface of the upper cover 2. The screw 1 passes through the liquid separator cover 8, the middle plate 11, the valve plate 14 and the cylinder body 17 in sequence and is threadedly connected to the bottom cover 21. A two-way check valve component is arranged inside the pump casing. The flow detection component can accurately monitor the water flow through the input connector 201, and an external flow meter is no longer needed to detect the working state of the pump body. The two-way check valve component arranged inside the pump casing can prevent backflow in both the water inlet and water outlet directions inside the pump casing, effectively preventing water backflow inside the pump casing.

[0031] Specifically, the flow detection component includes a shaft 5 fixedly mounted on the inner wall of the input connector 201, a magnet 6 rotatably mounted on the shaft 5, an impeller 7 fixedly mounted on the outside of the magnet 6, and a Hall detection PCB board 3 configured and mounted on the outside of the input connector 201. The water flow entering through the input connector 201 can drive the impeller 7 to rotate when flowing through the impeller 7. The rotating impeller 7 can drive the magnet 6 to rotate synchronously. The rotating magnet 6 can bring about a change in the direction of the magnetic field. With the help of the Hall detection PCB board 3, the size and direction of the magnetic field can be detected, and the detected signal can be converted into an electrical signal output. By measuring the output signal of the Hall element, the flow size of the water pump can be determined.

[0032] Specifically, an upper cover sealing ring 4 is arranged and installed between the upper cover 2 and the liquid separator cover 8, a middle plate sealing gasket 10 is arranged and installed between the liquid separator cover 8 and the middle plate 11, a spring 9 is arranged between the middle plate sealing gasket 10 and the liquid separator cover 8, and docking interface 1 and docking interface 2 are respectively formed on the middle plate 11, docking interface 1 and docking interface 2 are respectively formed, docking interface 1 is located on the outside of the middle plate sealing gasket 10, and docking interface 2 is located on the inside of the middle plate sealing gasket 10, the upper cover sealing ring 4 can play a sealing role at the connection between the upper cover 2 and the liquid separator cover 8, and the middle plate sealing gasket 10 can separate the docking interface 1 and the docking interface 2, and the docking interface 1 and the docking interface 2 can be respectively connected with the input connector 201 and the output connector 202.

[0033] Specifically, a valve plate 12 is arranged and installed between the middle plate 11 and the valve plate 14, a drainage port 2 is formed at the axis of the valve plate 14, and a drainage port 1 is formed around the drainage port 1. The valve plate 12 can separate the drainage port 1 and the drainage port 2, the drainage port 1 is communicated with the docking port 1, and the drainage port 2 is communicated with the docking port 2.

[0034] Specifically, the two-way check assembly is composed of a sealing gasket 13 installed inside the second drainage port and an umbrella 15 installed inside the first drainage port. A leather cup 16 is installed inside the cylinder body 17. The leather cup 16 cooperates with the circular motion of the motor 22 to make the leather cup 16 reciprocate, thereby compressing the air in the first drainage port to form positive pressure and vacuum, and realizing water extraction. At the same time, the umbrella 15 can play a role in preventing backflow. The water entering the leather cup 16 from the first drainage port can lift the sealing gasket 13 in the second drainage port when compressed and enter the second drainage port. The second drainage port is connected to the docking port 2.

[0035] Specifically, the inner bottom surface of the bottom cover 21 is equipped with screws 20, and the bottom cover 21 is fixedly connected to the motor 22 through the screws 20. The bottom end of the motor 22 is equipped with power pins, and the motor 22 can be connected to an external power line through the power pins.

[0036] Specifically, the output shaft of the motor 22 is equipped with an eccentric wheel 19, the top of the eccentric wheel 19 is connected to a swing frame 18, the top of the swing frame 18 is formed with an assembly port, the swing frame 18 is connected to the bottom end of the leather cup 16 through the assembly port, and the rotation of the output shaft of the motor 22 can drive the eccentric wheel 19 to rotate synchronously, the eccentrically rotating eccentric wheel 19 can drive the swing frame 18 to rotate reciprocatingly, and the rotating swing frame 18 can further drive the inside of the leather cup 16 to perform reciprocating compression, thereby realizing the extraction of water.

[0037] Working principle: the motor 22 can be connected to an external power line through an electrical pin, and then the output shaft of the motor 22 can drive the eccentric wheel 19 to rotate synchronously, and the eccentrically rotating eccentric wheel 19 can drive the swing frame 18 to rotate back and forth, and the rotating swing frame 18 can further drive the internal part of the leather cup 16 to perform reciprocating compression, thereby realizing water extraction, and the leather cup 16 can make the internal part of the leather cup 16 reciprocate through the circular motion of the motor 22, thereby compressing the air in the drainage port 1, forming positive pressure and vacuum, and realizing water extraction, and at the same time, the umbrella 15 can play a role in preventing backflow, and the water entering the leather cup 16 from the drainage port 1 can be compressed when it is in the drainage port. The sealing gasket 13 of the second port is lifted up and enters into the second drainage port. The second drainage port is communicated with the second docking port, so that the water can be transported to the output connector 202 for discharge. The sealing gasket 13 can also prevent the backflow through the second drainage port, thereby realizing the effect of two-way non-return. The water flow entering through the input connector 201 can drive the impeller 7 to rotate when flowing through the impeller 7. The rotating impeller 7 can drive the magnet 6 to rotate synchronously. The rotating magnet 6 can bring about a change in the direction of the magnetic field. With the help of the Hall detection PCB board 3, the size and direction of the magnetic field can be detected, and the detected signal can be converted into an electrical signal output. By measuring the output signal of the Hall element, the flow rate of the water pump can be determined.

[0038] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A micro water pump with a flow meter and a two-way check valve, comprising a pump housing and a motor (22), characterized in that: The pump housing comprises, from top to bottom, an upper cover (2), a liquid separation cover (8), a middle plate (11), a valve plate (14), a cylinder body (17) and a bottom cover (21). An input connector (201) and an output connector (202) are fixedly mounted on the top of the upper cover (2). A flow detection component is mounted on one side of the input connector (201). A screw 1 (1) is mounted on the upper surface of the upper cover (2). The screw 1 (1) passes through the liquid separation cover (8), the middle plate (11), the valve plate (14) and the cylinder body (17) in sequence and is threadedly connected to the bottom cover (21). A two-way check component is arranged inside the pump housing.

2. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: The flow detection component comprises a shaft (5) fixedly mounted on the inner wall of an input connector (201), a magnet (6) rotatably mounted on the shaft (5), an impeller (7) fixedly mounted on the outside of the magnet (6), and a Hall detection PCB board (3) mounted on the outside of the input connector (201).

3. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: An upper cover sealing ring (4) is arranged and installed between the upper cover (2) and the liquid separation cover (8), a middle plate sealing gasket (10) is arranged and installed between the liquid separation cover (8) and the middle plate (11), and a spring (9) is provided between the middle plate sealing gasket (10) and the liquid separation cover (8).

4. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: The middle plate (11) is respectively formed with a docking port one and a docking port two, wherein the docking port one is located outside the middle plate sealing gasket (10) and the docking port two is located inside the middle plate sealing gasket (10).

5. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: A valve plate (12) is arranged and installed between the middle plate (11) and the valve plate (14); a second drainage port is formed at the axis of the valve plate (14); and a first drainage port is formed around the second drainage port.

6. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: The two-way check assembly is composed of a sealing gasket (13) installed inside the second drainage port and an umbrella (15) installed inside the first drainage port.

7. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: The cylinder body (17) is internally provided with a leather cup (16).

8. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: The inner bottom surface of the bottom cover (21) is provided with a second screw (20), the bottom cover (21) is fixedly connected to the motor (22) via the second screw (20), and the bottom end of the motor (22) is provided with a power connection pin.

9. A micro water pump with a flow meter and a two-way check valve according to claim 1, characterized in that: An eccentric wheel (19) is installed on the output shaft of the motor (22), and a swing frame (18) is connected to the top end of the eccentric wheel (19).

10. A micro water pump with a flow meter and a two-way check valve according to claim 9, characterized in that: The top of the swing frame (18) is formed with an assembly opening, and the swing frame (18) is connected to the bottom end of the leather cup (16) through the assembly opening.

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