Miniature water pump

Abstract

The utility model relates to a miniature water pump which comprises a pump body, a water inlet and a water outlet are formed in the pump body, a water guide mechanism used for conveying liquid from the water inlet to the water outlet is arranged in the pump body, a connector groove used for a pipeline to stretch into is formed in the water outlet, and a locking piece capable of being matched with the pipeline in a clamped mode is arranged at the circumferential position of the connector groove. According to the water pump, the locking piece is detachably connected with the connector groove, the stability of connection between the water outlet and the pipeline can be improved through cooperation of the inserting groove and the locking piece, the disassembly and assembly difficulty of the pipeline and the water outlet is reduced, and the production efficiency of water equipment using the water pump is higher.

Description

Technical Field

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

[0002] The water pump is an important component of water-using equipment such as warm water machines and coffee machines. Some water-using equipment has high requirements for the water outlet pressure of the water pump. For example, the water outlet pressure of the water pump used in a drip coffee machine is relatively high. The installation and connection structure of the general pipe and the water outlet of the water pump is relatively complicated, and it is difficult to disassemble and assemble. It is difficult to ensure the stability of the connection between the pipe and the water outlet of the water pump, and it is not conducive to improving production efficiency.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and to provide a micro water pump, which can enable the water outlet and the pipeline to be quickly disassembled and assembled, improve the stability of the connection between the pipeline and the water outlet, and also help to improve production efficiency.

[0005] The purpose of the utility model is achieved in this way:

[0006] A micro water pump comprises a pump body, which is provided with a water inlet and a water outlet. A water guide mechanism for transferring liquid from the water inlet to the water outlet is provided in the pump body. The water outlet is provided with an interface groove for a pipeline to extend into. A locking piece capable of engaging with the pipeline is provided at a circumferential position of the interface groove. The locking piece is detachably connected to the interface groove.

[0007] As a specific solution, the water outlet is provided with hollow grooves on the left and right sides of the corresponding interface groove, the upper side and / or the lower side of the hollow groove is open, the locking piece is detachably connected to the hollow groove, the locking piece is in an open ring shape, and the locking piece is provided with a limiting portion for blocking the pipe from leaving the interface groove, and the head and tail ends of the locking piece can be respectively inserted from the openings of the corresponding hollow grooves and the limiting portion can be extended into the hollow groove to engage with the pipe.

[0008] As a specific solution, a transfer chamber and a water inlet chamber and a water outlet chamber respectively connected to the water inlet and the water outlet are provided in the pump body, a first channel enabling liquid to flow from the water inlet chamber into the transfer chamber and a second channel enabling liquid to flow from the transfer chamber into the water outlet chamber are provided between the transfer chamber and the water inlet chamber and the water outlet chamber, the water guiding mechanism includes a power assembly, a diaphragm, a first piston member and a second piston member, the first piston member and the second piston member are respectively connected and cooperated with the first channel and the second channel, the power assembly can drive the diaphragm to deform or reset and change the pressure in the transfer chamber so that the first piston member and the second piston member alternately open or close the first channel and the second channel.

[0009] As a specific solution, the head ends of the first piston member and the second piston member are both umbrella-shaped, the first piston member passes through the first channel from bottom to top, and the head end of the first piston member is arranged on the side of the transfer chamber outside the first channel, the second piston member passes through the second channel from top to bottom, and the means of the second piston member is arranged on the side of the water outlet chamber outside the second channel.

[0010] The deformation of the diaphragm can reduce the pressure in the transfer chamber, the first piston member opens the first channel through negative pressure, and the second piston member blocks the second channel.

[0011] The resetting of the diaphragm can increase the pressure in the transfer chamber, the first piston member blocks the first passage through pressure, and the second piston member opens the second passage.

[0012] As a specific solution, the power assembly includes a connecting rod and an eccentric wheel. The connecting rod is arranged on the lower side of the diaphragm and is transmission-connected to the diaphragm. The eccentric wheel can drive the diaphragm to deform or reset vertically by rotating the connecting rod.

[0013] As a specific solution, a bearing is provided between the connecting rod portion and the eccentric wheel, and the inner and outer sides of the bearing are respectively connected and matched with the eccentric wheel and the connecting rod portion.

[0014] As a specific solution, a reduction motor is provided on the outside of the pump body, the transmission shaft of the reduction motor extends into the pump body and is transmission-connected to the eccentric wheel, and the frequency of the vertical deformation or reset of the diaphragm is equivalent to the rotation speed of the reduction motor.

[0015] As a specific solution, the central axis directions of the reduction motor, the water inlet and the water outlet are respectively arranged in the horizontal direction.

[0016] The beneficial effects of the utility model are:

[0017] The combination of the plug groove and the locking piece can improve the stability of the connection between the water outlet and the pipe, and can prevent the pipe from accidentally falling off when the water outlet has a large pressure. Moreover, it reduces the difficulty of disassembling and assembling the pipe and the water outlet, making the water-using equipment using the water pump more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 .

[0019] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 .

[0020] Figure 3 Schematic diagram of the decomposition of the embodiment of the utility model Figure 1 .

[0021] Figure 4 Schematic diagram of the decomposition of the embodiment of the utility model Figure 2 .

[0022] Figure 5 A cross-sectional view of an embodiment of the present invention Figure 1 .

[0023] Figure 6 A cross-sectional view of an embodiment of the present invention Figure 2 .

[0024] Figure 7 A cross-sectional view of an embodiment of the present invention Figure 3 . DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 7 The micro water pump comprises a pump body 1, which is provided with a water inlet 11 and a water outlet 12. A water guiding mechanism for transferring liquid from the water inlet 11 to the water outlet 12 is provided in the pump body 1. The water outlet 12 is provided with an interface groove 121 for the pipeline 8 to extend into. A locking piece 9 capable of engaging with the pipeline 8 is provided at a circumferential position of the interface groove 121. The locking piece 9 is detachably connected to the interface groove 121. The plug-in groove 121 cooperates with the locking piece 9 to improve the stability of the connection between the water outlet 12 and the pipeline 8. When the water pump can be applied to water-using equipment with high requirements for water outlet pressure, such as a drip coffee machine, the water pressure at the water outlet 12 will be relatively large. The locking piece 9 can prevent the pipeline 8 from accidentally falling off when the water outlet 12 has a large pressure. Moreover, the difficulty of disassembling and assembling the pipeline 8 and the water outlet 12 is reduced, so that the production efficiency of water-using equipment using the water pump is higher.

[0027] Furthermore, hollow grooves 122 are provided on the left and right sides of the water outlet 12 corresponding to the interface groove 121, and the upper and / or lower sides of the hollow groove 122 are open. The locking piece 9 is detachably connected to the hollow groove 122, and the locking piece 9 is in an open ring shape. The locking piece 9 is provided with a limiting portion 91 for blocking the pipe 8 from leaving the interface groove 121. The head and tail ends of the locking piece 9 can be respectively inserted from the openings of the corresponding hollow grooves 122 and the limiting portion 91 can be extended into the hollow groove 122 to engage with the pipe 8. It is only necessary to set a protrusion 81 at one end of the pipe 8 extending into the interface groove 121. The width of the protrusion 81 is greater than the limiting portion 91, and the width of the pipe 9 is less than the limiting portion 91. When the locking piece 9 is inserted into the hollow groove 122, the limiting portion 91 can be engaged with the pipe 8 and prevent the pipe 8 from slipping out of the interface groove 121.

[0028] Furthermore, a transfer chamber 13 and a water inlet chamber 14 and a water outlet chamber 15 respectively connected to the water inlet 11 and the water outlet 12 are provided in the pump body 1. A first channel 131 capable of allowing liquid to flow from the water inlet chamber 14 into the transfer chamber 13 and a second channel 132 capable of allowing liquid to flow from the transfer chamber 13 into the water outlet chamber 15 are respectively provided between the transfer chamber 13 and the water inlet chamber 14 and the water outlet chamber 15. The water guiding mechanism includes a power assembly, a diaphragm 2, a first piston member 31 and a second piston member 32. The first piston member 31 and the second piston member 32 are respectively connected and cooperated with the first channel 131 and the second channel 132. The power assembly can drive the diaphragm 2 to deform or reset and change the pressure in the transfer chamber 13 so that the first piston member 31 and the second piston member 32 alternately open or close the first channel 131 and the second channel 132.

[0029] Furthermore, the head ends of the first piston member 31 and the second piston member 32 are both umbrella-shaped. The first piston member 31 passes through the first channel 131 from bottom to top, and the head end of the first piston member 31 is arranged on the side of the transfer chamber 13 outside the first channel 131. The second piston member 32 passes through the second channel 132 from top to bottom, and the means of the second piston member 32 is arranged on the side of the water outlet chamber 15 outside the second channel 132.

[0030] The deformation of the diaphragm 2 can reduce the pressure in the transfer chamber 13 , the first piston member 31 opens the first channel 131 through negative pressure and the second piston member 32 blocks the second channel 132 , and at this time, liquid can flow from the water inlet chamber 14 into the transfer chamber 13 .

[0031] The resetting of the diaphragm 2 can increase the pressure in the transfer chamber 13 , the first piston member 31 seals the first passage through pressure, and the second piston member 32 opens the second passage 132 , at which time the liquid can flow from the transfer chamber 13 into the water outlet chamber 15 , and finally be discharged from the water outlet 12 .

[0032] Furthermore, the power assembly includes a connecting rod portion 4 and an eccentric wheel 5. The connecting rod portion 4 is arranged on the lower side of the diaphragm 2 and is transmission-connected to the diaphragm 2. The eccentric wheel 5 can drive the diaphragm 2 to deform or reset vertically by rotating the connecting rod portion 4. The power assembly deforms or resets the diaphragm 2 vertically through the eccentric wheel 5 and the connecting rod portion 4 in turn.

[0033] Furthermore, a bearing 6 is provided between the connecting rod portion 4 and the eccentric wheel 5 , and the inner and outer sides of the bearing 6 are respectively connected and cooperated with the eccentric wheel 5 and the connecting rod portion 4 to ensure the stability of the eccentric wheel 5 during the rotation process.

[0034] Furthermore, a reduction motor 7 is provided on the outside of the pump body 1, and a transmission shaft 71 of the reduction motor 7 extends into the pump body 1 and is transmission-connected to the eccentric wheel 5. The reduction motor 7 can provide a large torque for the eccentric wheel 5, and the frequency of vertical deformation or resetting of the diaphragm 2 is equivalent to the rotation speed of the reduction motor 7.

[0035] Conventional water pumps can only achieve a flow rate of more than 100 ml / minute, and because of the insufficient torque of conventional water pumps, when the pressure required at the water outlet is too high, conventional water pumps are prone to intermittent stop and cannot stably output water with higher pressure.

[0036] By setting the reduction motor 7, the overall flow rate of the micro water pump can be controlled within a relatively small range, so that the water pump can output liquid with a small flow rate and a high pressure. The micro water pump in this embodiment can achieve a minimum flow rate of 20 ml / minute, and the water outlet pressure of the water outlet 12 can reach more than 2 Bar (kilograms). Since the reduction motor 7 has a low speed and a large torque, when the water outlet 12 requires a higher pressure, the micro water pump does not need to stop intermittently, and can still stably output a pressure of more than 2 kilograms when the flow rate is very small.

[0037] This WeChat water pump can be used on water-using equipment that requires high pressure and low flow rate, such as drip coffee machines.

[0038] Furthermore, the central axis directions of the reduction motor 7, the water inlet 11 and the water outlet 12 are respectively arranged in the horizontal direction, which can better utilize the horizontal space position, reduce the overall height of the water pump, and make it easier to install and coordinate with water-using equipment.

[0039] The above embodiments are only preferred embodiments of the present invention, and the present invention may have other embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope set by the claims of this application.

Claims

1. A micro water pump, comprising a pump body (1), wherein the pump body (1) is provided with a water inlet (11) and a water outlet (12), and the pump body (1) is provided with a water guide mechanism for transferring liquid from the water inlet (11) to the water outlet (12), wherein: The water outlet (12) is provided with an interface groove (121) for the pipe (8) to extend therein, and a locking piece (9) capable of engaging with the pipe (8) is provided at a circumferential position of the interface groove (121), and the locking piece (9) is detachably connected to the interface groove (121).

2. The micro water pump according to claim 1, characterized in that: The water outlet (12) is provided with hollow grooves (122) at left and right sides of the corresponding interface groove (121); the upper side and / or the lower side of the hollow groove (122) are open; the locking member (9) is detachably connected to the hollow groove (122); the locking member (9) is in an open ring shape; a limiting portion (91) is provided on the locking member (9) for preventing the pipe (8) from leaving the interface groove (121); the front and rear ends of the locking member (9) can be respectively inserted from the openings of the corresponding hollow groove (122) and the limiting portion (91) can be extended into the hollow groove (122) to engage with the pipe (8) in a clamping manner.

3. The micro water pump according to claim 1 or 2, characterized in that: The pump body (1) is provided with a transfer chamber (13) and a water inlet chamber (14) and a water outlet chamber (15) respectively connected to the water inlet (11) and the water outlet (12). A first channel (131) capable of allowing liquid to flow from the water inlet chamber (14) into the transfer chamber (13) and a second channel (132) capable of allowing liquid to flow from the transfer chamber (13) into the water outlet chamber (15) are respectively provided between the transfer chamber (13) and the water inlet chamber (14) and the water outlet chamber (15). The water guide mechanism includes The invention comprises a power assembly, a diaphragm (2), a first piston member (31) and a second piston member (32); the first piston member (31) and the second piston member (32) are respectively connected and matched with the first channel (131) and the second channel (132); the power assembly can drive the diaphragm (2) to deform or reset and change the pressure in the transfer chamber (13) so that the first piston member (31) and the second piston member (32) alternately open or close the first channel (131) and the second channel (132).

4. The micro water pump according to claim 3, characterized in that: The head ends of the first piston member (31) and the second piston member (32) are both umbrella-shaped; the first piston member (31) passes through the first channel (131) from bottom to top, and the head end of the first piston member (31) is arranged on a side of the first channel (131) close to the transfer chamber (13); the second piston member (32) passes through the second channel (132) from top to bottom, and the back end of the second piston member (32) is arranged on a side of the second channel (132) close to the water outlet chamber (15); The deformation of the diaphragm (2) can reduce the pressure in the transfer chamber (13), the first piston member (31) opens the first channel (131) through negative pressure, and the second piston member (32) blocks the second channel (132); The resetting of the diaphragm (2) can increase the pressure in the transfer chamber (13), the first piston member (31) blocks the first passage through pressure, and the second piston member (32) opens the second passage (132).

5. The micro water pump according to claim 3, characterized in that: The power assembly comprises a connecting rod portion (4) and an eccentric wheel (5); the connecting rod portion (4) is arranged on the lower side of the diaphragm (2) and is drivingly connected to the diaphragm (2); the eccentric wheel (5) can drive the diaphragm (2) to deform or reset vertically by rotating the connecting rod portion (4).

6. The micro water pump according to claim 5, characterized in that: A bearing (6) is provided between the connecting rod portion (4) and the eccentric wheel (5), and the inner and outer sides of the bearing (6) are respectively connected and matched with the eccentric wheel (5) and the connecting rod portion (4).

7. The micro water pump according to claim 5, characterized in that: A reduction motor (7) is provided on the outside of the pump body (1); a transmission shaft (71) of the reduction motor (7) extends into the pump body (1) and is transmission-connected to the eccentric wheel (5); and a frequency of vertical deformation or resetting of the diaphragm (2) is equivalent to a rotation speed of the reduction motor (7).

8. The micro water pump according to claim 7, characterized in that: The central axis directions of the reduction motor (7), the water inlet (11) and the water outlet (12) are respectively arranged in the horizontal direction.

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