A drip-proof miniature pump

Abstract

This utility model discloses a drip-proof micro pump, including a pump body. The pump body has, from top to bottom, a cover, a first valve plate, a second valve plate, and a cylinder. The cover, the first valve plate, and the second valve plate are connected to the cylinder by multiple screws. The first valve plate is connected to an input pipe, and the cover is connected to an output pipe. A sealing gasket abuts between the first valve plate and the second valve plate. The first valve plate has an input cavity communicating with the input pipe and an output cavity communicating with the output pipe. The second valve plate has an input port communicating with the input cavity and an output port communicating with the output cavity. A one-way inlet valve is provided at the input port. The output cavity has a protruding inlet and a sealing component is provided at the output cavity to seal the inlet. When the pump body stops working, the movable block, under the elastic force of the spring, drives the sealing block to seal the inlet, so that liquid does not enter the output cavity and avoids dripping.

Description

Technical Field

[0001] This utility model relates to the field of micro water pump technology, specifically a drip-proof micro pump. Background Technology

[0002] Miniature water pumps are commonly used in household appliances such as water dispensers, tea bag makers, and baby bottle warmers for the transport of liquids.

[0003] Currently, the inlet and outlet pipes of micro water pumps are generally located on the cover, which can easily interfere with each other when the inlet and outlet pipes are connected, making operation inconvenient. Furthermore, when the micro water pump stops working, if the inlet pipe is higher than the outlet, water will leak out of the outlet, causing leakage. If the micro water pump is not used for a long time, the water inside the pump will dry out, causing the rubber and plastic parts inside the cylinder to stick together, resulting in pump failure. Therefore, this utility model proposes a leak-proof micro pump that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a drip-proof micro pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drip-proof micro pump, comprising a pump body, wherein the pump body comprises a cover, a first valve plate, a second valve plate and a cylinder from top to bottom, the cover, the first valve plate and the second valve plate are connected to the cylinder by multiple screws, the first valve plate is connected to an input pipe and the cover is connected to an output pipe;

[0006] A sealing gasket abuts between the first valve plate and the second valve plate. The first valve plate has an input cavity that connects to the input pipe and an output cavity that connects to the output pipe. The second valve plate has an input port that connects to the input cavity and an output port that connects to the output cavity. A one-way water inlet valve is provided at the input port. The output cavity has a protruding inlet.

[0007] A sealing component is provided at the output cavity, and the sealing component is used to seal the inlet.

[0008] Preferably, the sealing gasket has multiple inwardly recessed areas that isolate the multiple screws on the outside.

[0009] Preferably, the upper end of the first valve plate is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0010] Preferably, the lower end of the cover has multiple inserts, and the upper end of the first valve plate has a groove for the multiple inserts to be fitted one by one.

[0011] Preferably, both the input tube and the output tube have insertion protrusions on their outer sides, and the insertion protrusions have guide arc surfaces with gradually increasing outer diameters.

[0012] Preferably, the sealing assembly includes a movable block and a spring, the spring elastically abutting against the upper end of the movable block, and the lower end of the movable block having a sealing portion, the outer diameter of which is larger than the inner diameter of the inlet and smaller than the inner diameter of the output cavity.

[0013] Preferably, the inner wall of the output cavity has multiple flow channels.

[0014] Preferably, each of the screws is fitted with a washer.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The inlet and outlet pipes are located in different positions, with the inlet pipe extending vertically and the outlet pipe extending horizontally. When the inlet and outlet pipes are connected, there will be no interference between them, making operation convenient.

[0017] When the main body of the water pump stops working, the movable block, under the elastic force of the spring, drives the sealing block to seal the inlet, so that the liquid does not enter the output chamber and avoids leakage.

[0018] When the water pump body is not used for a long time, the water inside the water pump body is sealed by the one-way inlet valve and the sealing block, so the water inside the water pump body is not easy to dry out. This prevents the rubber and plastic parts from sticking together and causing the water pump to fail, thus improving the service life of the water pump body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the cover, first valve plate, second valve plate and cylinder body of this utility model;

[0021] Figure 3 This is a schematic diagram showing the positional relationship between the sealing gasket and the multiple screws of this utility model;

[0022] Figure 4 This is a schematic diagram of the first valve plate structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the second valve plate structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the sealing component structure of this utility model;

[0025] Figure 7 This is a schematic diagram showing the connection between the drive motor and the diaphragm of this utility model;

[0026] In the diagram: 10. Pump body; 11. Cover; 111. Output pipe; 12. First valve plate; 121. Input pipe; 122. Input chamber; 123. Output chamber; 124. Inlet; 125. Flow channel; 126. Annular groove; 127. Sealing ring; 13. Second valve plate; 131. Input port; 132. Output port; 133. One-way inlet valve; 14. Cylinder; 141. Leather cup; 15. Sealing gasket; 16. Screw; 17. Sealing assembly; 171. Spring; 172. Movable block; 173. Sealing part; 18. Insertion protrusion. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-7

[0029] Provide a drip-proof miniature pump:

[0030] The water pump body 10 has a cover 11, a first valve plate 12, a second valve plate 13 and a cylinder 14 from top to bottom. The water pump body 10 has a drive motor. The cylinder 14 has a cup 141. The drive motor drives the pendulum needle to swing and continuously stretch and compress the cup 141 to provide power for the entry and exit of liquid.

[0031] The cover 11, the first valve plate 12, and the second valve plate 13 are connected to the cylinder body 14 by multiple screws 16. The first valve plate 12 is connected to the input pipe 121, and the cover 11 is connected to the output pipe 111. The input pipe 121 and the output pipe 111 are distributed in different positions, with the input pipe 121 extending vertically and the output pipe 111 extending horizontally. When the inlet pipe and the outlet pipe are inserted, there will be no mutual interference, and the operation is convenient.

[0032] A sealing gasket 15 abuts between the first valve plate 12 and the second valve plate 13. The first valve plate 12 has an input cavity 122 that connects to the input pipe 121 and an output cavity 123 that connects to the output pipe 111. The sealing gasket 15, abutted by the first valve plate 12 and the second valve plate 13, effectively isolates the input cavity 122 and the output cavity 123 to prevent liquid leakage.

[0033] The second valve plate 13 has an input port 131 that connects to the input chamber 122 and an output port 132 that connects to the output chamber 123. A one-way water inlet valve 133 is provided at the input port 131. The output chamber 123 has a protruding inlet 124. A sealing assembly 17 is provided at the output chamber 123. The sealing assembly 17 is used to seal the inlet 124. The sealing assembly 17 includes a movable block 172 and a spring 171. The spring 171 elastically abuts against the upper end of the movable block 172. The lower end of the movable block 172 has a sealing part 173. The outer diameter of the sealing part 173 is larger than the inner diameter of the inlet 124 and smaller than the inner diameter of the output chamber 123. When the drive motor stops working;

[0034] When the water pump body 10 is working, liquid enters the diaphragm cup 141 from the inlet 131 through the inlet 122. The compression and deformation of the diaphragm cup 141 pushes the liquid to push the movable block 172 upward to open the inlet 124, so that the liquid enters the outlet chamber 123 through the outlet 132 and the inlet 124, and finally is discharged through the outlet pipe 111. When the water pump body 10 stops working, the diaphragm cup 141 stops stretching and compressing. The movable block 172 drives the sealing block to seal the inlet 124 under the elastic force of the spring 171, so that the liquid does not enter the outlet chamber 123, that is, to avoid leakage.

[0035] When the water pump body 10 is not used for a long time, the water inside the water pump body 10 is sealed by the one-way inlet valve 133 and the sealing block, so the water inside the water pump body 10 is not easy to dry out, thereby avoiding the rubber parts and plastic parts from sticking together and causing the water pump to fail, thus improving the service life of the water pump body 10.

[0036] The sealing gasket 15 has multiple inward recessed areas, which isolate multiple screws 16 on the outside. The upper end of the first valve plate 12 is provided with an annular groove 126, and a sealing ring 127 is provided in the annular groove 126 to effectively improve the sealing performance.

[0037] The lower end of the cover 11 has multiple inserts, and the upper end of the first valve plate 12 has a groove for the multiple inserts to be fitted one by one. Each screw 16 is fitted with a washer. During assembly, the screws are guided by the insertion of the inserts into the grooves, making assembly convenient.

[0038] Both the input pipe 121 and the output pipe 111 have insertion protrusions 18 on their outer sides. The insertion protrusions 18 have guide arc surfaces with gradually increasing outer diameters. The insertion protrusions 18 support the inlet and outlet pipes, making them less likely to fall off.

[0039] The inner wall of the output chamber 123 has multiple flow channels 125, which allow the liquid to flow quickly to the input pipe 121 through the flow channels 125 after entering the output chamber 123, thereby increasing the liquid discharge speed.

[0040] 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 drip-proof micropump, characterized by The pump body (10) includes a cover (11), a first valve plate (12), a second valve plate (13) and a cylinder (14) from top to bottom. The cover (11), the first valve plate (12) and the second valve plate (13) are connected to the cylinder (14) by multiple screws (16). The first valve plate (12) is connected to an input pipe (121), and the cover (11) is connected to an output pipe (111). A sealing gasket (15) abuts between the first valve plate (12) and the second valve plate (13). The first valve plate (12) has an input cavity (122) that connects to the input pipe (121) and an output cavity (123) that connects to the output pipe (111). The second valve plate (13) has an input port (131) that connects to the input cavity (122) and an output port (132) that connects to the output cavity (123). A one-way water inlet valve (133) is provided at the input port (131). The output cavity (123) has a protruding inlet (124). A blocking component (17) is provided at the output cavity (123), and the blocking component (17) is used to block the inlet (124).

2. The drip-free micropump of claim 1, wherein The sealing gasket (15) has multiple inwardly recessed areas that isolate the multiple screws (16) on the outside.

3. The drip-free micropump of claim 1, wherein, The upper end of the first valve plate (12) is provided with an annular groove (126), and a sealing ring (127) is provided in the annular groove.

4. A drip-proof micropump according to claim 3, characterized in that The lower end of the cover (11) has multiple inserts, and the upper end of the first valve plate (12) has a groove for the multiple inserts to be fitted one by one.

5. The drip-free micropump of claim 1, wherein, Both the input tube (121) and the output tube (111) have insertion protrusions (18) on their outer sides. The insertion protrusions (18) have guide arc surfaces, and the outer diameter of the guide arc surfaces gradually increases.

6. The drip-free micropump of claim 1, wherein, The blocking assembly (17) includes a movable block (172) and a spring (171). The spring (171) elastically abuts against the upper end of the movable block (172). The lower end of the movable block (172) has a blocking part (173). The outer diameter of the blocking part (173) is larger than the inner diameter of the inlet (124) and smaller than the inner diameter of the output cavity (123).

7. A drip-proof micropump according to claim 6, characterized in that The inner wall of the output cavity (123) has multiple flow channels (125).

8. The drip-free micropump of claim 1, wherein, Each of the screws (16) is fitted with a washer.

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