Miniature continuous foam pump

Abstract

The invention discloses a miniature continuous foam pump which comprises an upper shell, a lower shell and a bottom cover, an integrated piston capable of moving up and down and driving an air pump and a liquid pump at the same time is installed on the inner side of the upper shell, an air cylinder and a liquid cylinder are arranged below the integrated piston, an air bag contained in the air cylinder is installed at the bottom of the integrated piston, and an air outlet is formed in the bottom of the air bag. The integrated piston is provided with a piston driving the hydraulic cylinder to enter and exit liquid, the upper shell is provided with a driving device driving the integrated piston to move up and down, the inner side of the lower shell is provided with a flow guide block, the top of the lower shell is provided with an air inlet one-way valve and an air outlet one-way valve, the lower shell is provided with a liquid inlet one-way valve, and the lower shell is provided with a liquid outlet one-way valve. And the bottom cover is provided with a liquid outlet one-way valve. Liquid inlet and outlet and gas inlet and outlet are independent and separated, the eccentric cam drives the two cylinders to synchronously pump gas and liquid at the same time, strict and synchronous gas and liquid inlet and outlet are achieved, residual foam cannot be attached to the foam outlet nozzle, the gas-liquid proportion change is small, control precision is high, and foam outlet is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of foam pumps, and in particular to a micro continuous foam pump. Background Art

[0002] Foam pumps are products that people often use. Foam pumps are generally set on containers such as shower gels and hand sanitizers that people use daily to extract liquid from the containers. A micro foam pump is a type of foam pump, but the current micro foam pump is mainly represented by a diaphragm pump, which uses a motor to drive an air bag through an eccentric wheel to work, and then inhales gas and liquid (such as soap liquid, detergent, etc., which can make foam) and mixes them to make foam state output, but the diaphragm pump is a flexible pump, and the inlet and outlet liquid and the inlet and outlet gas are all controlled by air bags. The air bag is easily stuck by the liquid, resulting in insufficient thrust, and there are defects such as being unable to pump high-viscosity fluids, easy pump blockage, short life, loud noise, and easy backflow. At the same time, the inlet and outlet liquid and the inlet and outlet gas are not coherent and synchronous, and the nozzle will have a phenomenon of sticking residual foam, the gas-liquid ratio entering the foam pump changes greatly, and the control is not accurate, resulting in uneven foaming, and sometimes even no pumping liquid and failure, affecting the normal use of the foam pump. Therefore, in order to avoid the shortcomings existing in the prior art, it is necessary to improve the prior art. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a micro continuous foam pump with stable operation and uniform foaming.

[0004] The present invention is achieved through the following technical solutions:

[0005] The pump comprises an upper shell, a lower shell and a bottom cover, wherein an integrated piston which can move up and down and drive an air pump and a liquid pump at the same time is installed on the inner side of the upper shell, an air cylinder and a liquid cylinder are respectively arranged below the integrated piston, an air bag accommodated in the cylinder is installed at the bottom of the integrated piston, a piston which drives the liquid cylinder to flow in and out is arranged on the integrated piston, a driving device which drives the integrated piston to move up and down is installed on the upper shell, a guide block is installed on the inner side of the lower shell, an air inlet nozzle, a liquid inlet nozzle, an air outlet nozzle and a liquid outlet nozzle are respectively arranged on the outer side of the bottom cover, a bubbler is connected to the air outlet nozzle and the liquid outlet nozzle, an air inlet check valve and an air outlet check valve are respectively installed on the top of the lower shell, the air inlet check valve and the air outlet check valve are respectively arranged below the air bag, the guide block is provided with an air inlet channel connected with the air inlet nozzle, and the top of the lower shell is provided with a The lip seal of the air bag is connected with the lip seal of the air bag, and the lip seal of the air bag is connected with the lip seal of the air bag.

[0006] Furthermore, the airbag is made of an elastomeric material, and the piston is made of a rigid material or an elastomeric material.

[0007] Furthermore, the driving device includes a motor, a motor shaft of the motor is connected to a driving gear, the driving gear is meshedly connected to a driven gear, the driven gear is provided with an eccentric cam, and the integrated piston is provided with a long strip through groove for connecting the eccentric cam.

[0008] Furthermore, a sealing rubber ring is sleeved on the outer side of the piston.

[0009] Furthermore, the liquid cylinder and the upper shell are integrally formed.

[0010] Furthermore, a longitudinal guide bar is provided on the outer side of the integrated piston, and a longitudinal guide groove corresponding to the longitudinal guide bar is provided on the inner side of the upper shell.

[0011] Furthermore, a first set of columns for the liquid inlet one-way valve to be mounted on is provided at the bottom of the lower shell body, the first set of columns is interference fit with the liquid inlet one-way valve, the bottom surface of the liquid inlet one-way valve presses against the bottom of the liquid inlet cavity to achieve a sealing effect, and a second set of columns for the liquid outlet one-way valve to be mounted on the top of the bottom cover, the second set of columns is interference fit with the liquid outlet one-way valve, the top surface of the liquid outlet one-way valve presses against the top of the liquid outlet cavity to achieve a sealing effect.

[0012] Furthermore, the top cover of the upper shell is provided with an upper shell top cover, and the upper shell top cover, the upper shell, the lower shell and the bottom cover are fixedly connected by screws and nuts.

[0013] Furthermore, the outer side of the air outlet nozzle and the outer side of the liquid outlet nozzle are both sleeved with O-shaped sealing rubber rings.

[0014] Furthermore, the bubbler is provided with a first channel connected to the air outlet nozzle, the bubbler is provided with a second channel connected to the liquid outlet nozzle, the bubbler is provided with a mixing chamber connected to the first channel and the second channel respectively, a foaming net is installed at the end of the mixing chamber, and the bubbler is provided with a bubble outlet nozzle connected to the mixing chamber.

[0015] Compared with the prior art, the present invention provides an air cylinder and a liquid cylinder respectively under an integrated piston, an air bag accommodated in the cylinder is installed at the bottom of the integrated piston, a piston sleeved in the liquid cylinder is provided at the bottom of the integrated piston, a guide block is provided with an air inlet channel connected to the air inlet nozzle, an air inlet hole connecting the air inlet channel and the air bag is provided at the top of the lower shell body, a guide block is provided with an air outlet channel connected to the air outlet nozzle, a lower shell body is provided with an air outlet hole connecting the air outlet channel and the air bag at the top, a guide block is provided with a liquid inlet channel connected to the liquid inlet nozzle, a liquid inlet cavity connected to the liquid inlet channel is provided at the top of the guide block, a liquid inlet hole connecting the liquid inlet cavity and the liquid cylinder is provided at the top of the guide block, a liquid outlet cavity connected to the liquid outlet nozzle is provided at the bottom of the guide block, The flow block is provided with a liquid outlet channel connected with the liquid outlet cavity, and the top of the guide block is provided with a liquid outlet hole connecting the liquid outlet channel and the liquid cylinder, so that the air cylinder and the liquid piston cylinder piston are integrated on one part, and the integrated piston moves up and down and drives the air bag and the piston to move up and down and drive the air pump and the liquid pump at the same time, the air bag controls the inlet and outlet of air while the piston controls the inlet and outlet of liquid, the air bag, the air inlet check valve and the air outlet check valve will not be stuck by the liquid to cause insufficient thrust, the inlet and outlet of liquid are separated from the inlet and outlet of air, the inlet and outlet of liquid are coherent and synchronous with the inlet and outlet of air, the foaming nozzle will not be stuck with residual foam, the gas-liquid ratio entering the foam pump changes little, the control accuracy is high, the foaming is uniform, and the situation of pumping liquid failure and failure will not occur, thereby ensuring the normal use of the foam pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic structural diagram of the micro continuous foam pump of the present invention;

[0018] Figure 2 This is a structural exploded view of the micro continuous foam pump of the present invention;

[0019] Figure 3 A top view of the micro continuous foam pump of the present invention;

[0020] Figure 4 for Figure 3 AA section view;

[0021] Figure 5 for Figure 3 BB cross-sectional view;

[0022] Figure 6 It is a structural schematic diagram of the upper shell of the present invention.

[0023] In the figure: 1-upper shell; 2-lower shell; 3-bottom cover; 4-integrated piston; 5-cylinder; 6-liquid cylinder; 7-air bag; 8-piston; 9-guide block; 10-air inlet nozzle; 11-liquid inlet nozzle; 12-air outlet nozzle; 13-liquid outlet nozzle; 14-bubble dispenser; 15-air inlet check valve; 16-air outlet check valve; 17-air inlet channel; 18-air inlet hole; 19-air outlet channel; 20-air outlet hole; 21-liquid inlet check valve; 22-liquid outlet check valve; 23-liquid inlet channel; 24-liquid inlet cavity; 25- Liquid inlet hole; 26-liquid outlet cavity; 27-liquid outlet channel; 28-liquid outlet hole; 29-motor; 30-driving gear; 31-driven gear; 32-eccentric cam; 33-long strip through groove; 34-sealing rubber ring; 35-longitudinal guide strip; 36-longitudinal guide groove; 37-first set of columns; 38-second set of columns; 39-upper shell cover; 40-screw; 41-nut; 42-O-ring sealing rubber ring; 43-first channel; 44-second channel; 45-mixing chamber; 46-foaming net; 47-foaming nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 6The micro continuous foam pump of the present invention comprises an upper shell 1, a lower shell 2 and a bottom cover 3. An integrated piston 4 which can move up and down and drive an air pump and a liquid pump at the same time is installed on the inner side of the upper shell 1. An air cylinder 5 and a liquid cylinder 6 are respectively arranged below the integrated piston 4. An air bag 7 accommodated in the air cylinder 5 is installed at the bottom of the integrated piston 4. A piston 8 sleeved on the liquid cylinder 6 is arranged at the bottom of the integrated piston 4. A driving device for driving the integrated piston 4 to move up and down is installed on the upper shell 1. The inner side of the lower shell 2 is provided with a piston 8 which is sleeved on the liquid cylinder 6. A guide block 9 is installed on the side, and an air inlet nozzle 10, a liquid inlet nozzle 11, an air outlet nozzle 12 and a liquid outlet nozzle 13 are respectively provided on the outer side of the bottom cover 3. The air outlet nozzle 12 and the liquid outlet nozzle 13 are connected with a bubbler 14. An air inlet check valve 15 and an air outlet check valve 16 are respectively installed on the top of the lower shell 2. The air inlet check valve 15 and the air outlet check valve 16 are respectively arranged below the air bag 7. The guide block 9 is provided with an air inlet channel 17 connected with the air inlet nozzle 10, and the top of the lower shell 2 is provided with a connecting air inlet channel 17. The air inlet hole 18 of the airbag 7 is covered by the air inlet check valve 15, the guide block 9 is provided with an air outlet channel 19 connected to the air outlet nozzle 12, the top of the lower shell 2 is provided with an air outlet hole 20 connecting the air outlet channel 19 and the airbag 7, the air outlet check valve 16 is covered at the bottom of the air outlet hole 20, the lower shell 2 is installed with a liquid inlet check valve 21, the bottom cover 3 is installed with a liquid outlet check valve 22, the guide block 9 is provided with a liquid inlet channel 23 connected to the liquid inlet nozzle 11, and the liquid inlet check valve 21 covers the bottom of the air outlet hole 20. Located at the top of the liquid inlet channel 23, the top of the guide block 9 is provided with a liquid inlet cavity 24 connected to the liquid inlet channel 23, the top of the lower shell body 2 is provided with a liquid inlet hole 25 connecting the liquid inlet cavity 24 and the liquid cylinder 6, the bottom of the guide block 9 is provided with a liquid outlet cavity 26 connected to the liquid outlet nozzle 13, the guide block 9 is provided with a liquid outlet channel 27 connected to the liquid outlet cavity 26, the top of the guide block 9 is provided with a liquid outlet hole 28 connecting the liquid outlet channel 27 and the liquid cylinder 6, and the liquid outlet one-way valve 22 cover is arranged at the bottom of the liquid outlet channel 27.An air cylinder 5 and a liquid cylinder 6 are respectively provided below the integrated piston 4, an air bag 7 accommodated in the air cylinder 5 is installed at the bottom of the integrated piston 4, a piston 8 for driving the liquid cylinder 6 to inlet and outlet liquid is provided on the integrated piston 4, a guide block 9 is provided with an air inlet channel 17 connected to the air inlet nozzle 10, an air inlet hole 18 connecting the air inlet channel 17 and the air bag 7 is provided at the top of the lower shell 2, an air outlet channel 19 connected to the air outlet nozzle 12 is provided at the guide block 9, an air outlet hole 20 connecting the air outlet channel 19 and the air bag 7 is provided at the top of the lower shell 2, a liquid inlet channel 23 connected to the liquid inlet nozzle 11 is provided at the top of the guide block 9, a liquid inlet cavity 24 connected to the liquid inlet channel 23 is provided at the top of the lower shell 2, a liquid inlet hole 25 connecting the liquid inlet cavity 24 and the liquid cylinder 6 is provided at the bottom of the guide block 9 A liquid outlet cavity 26 is connected, and the guide block 9 is provided with a liquid outlet channel 27 connected to the liquid outlet cavity 26. A liquid outlet hole 28 connecting the liquid outlet channel 27 and the liquid cylinder is provided on the top of the guide block 9, so that the air cylinder and the liquid piston cylinder piston are integrated on one part. The integrated piston 4 moves up and down and drives the air bag 7 and the piston 8 to move up and down and drive the air pump and the liquid pump at the same time. The air bag 7 controls the inlet and outlet of air while the piston 8 controls the inlet and outlet of liquid. The air bag 7, the air inlet check valve 15 and the air outlet check valve 16 will not be stuck by the liquid to cause insufficient thrust. The inlet and outlet of liquid are independently separated from the inlet and outlet of air. The inlet and outlet of liquid are coherent and synchronous with the inlet and outlet of air. The foaming nozzle will not stick to residual foam, the air-liquid ratio entering the foam pump changes little, the control accuracy is high, the foaming is uniform, and there will be no situation of pumping liquid failure and failure, thereby ensuring the normal use of the foam pump.

[0026] In a specific implementation, the airbag 7 is made of an elastomeric material, and the piston 8 is made of a rigid material or an elastomeric material. This configuration makes the foam pump more stable and reliable.

[0027] As a specific implementation, the driving device includes a motor 29, the motor shaft of the motor 29 is connected to a driving gear 30, the driving gear 30 is meshingly connected to a driven gear 31, the driven gear 31 is provided with an eccentric cam 32, the integrated piston 4 is provided with a long strip through groove 33 for the eccentric cam 32 to be connected, the motor 29 stably drives the integrated piston 4 to move up and down, the integrated piston 4 moves up and down continuously and stably, the eccentric cam 32 simultaneously drives the two cylinders to synchronously pump air and liquid, thereby realizing synchronous inlet and outlet of liquid and air.

[0028] A sealing rubber ring 34 is sleeved on the outer side of the piston 8 to improve the sealing performance of the piston 8 in controlling the inlet and outlet of liquid.

[0029] The liquid cylinder 6 is integrally formed with the upper shell 1 , and the liquid cylinder 6 and the upper shell 1 for mounting the motor are integrated into one body, so that the cost is optimized and the structure is more stable.

[0030] A longitudinal guide bar 35 is disposed on the outer side of the integrated piston 4 , and a longitudinal guide groove 36 corresponding to the longitudinal guide bar 35 is disposed on the inner side of the upper shell 1 , so that the up and down movement of the integrated piston 4 is more stable.

[0031] A first set of columns 37 for sleeves of the inlet check valve 15 is provided at the bottom of the lower shell 2. The first set of columns 37 and the inlet check valve 15 have an interference fit, and the bottom surface of the inlet check valve 15 abuts against the bottom of the liquid inlet chamber 24 to achieve a sealing effect. A second set of columns 38 for sleeves of the outlet check valve 16 is provided at the top of the bottom cover 3. The second set of columns 38 and the outlet check valve 16 have an interference fit, and the top surface of the outlet check valve 16 abuts against the top of the liquid outlet chamber 26 to achieve a sealing effect. The columns interfere with each other to squeeze the valve, so that the valve generates pre-pressure to achieve sealing. At the same time, this structure prevents the valve from being separated from the assembly position due to the flow pressure of the fluid. By controlling the size of each pre-pressure, it is easy to pump liquid and the liquid will not flow back. The liquid inlet and outlet valve structure is more convenient to install and more reliable.

[0032] The top cover of the upper shell 1 is provided with an upper shell top cover 39 to facilitate the installation and protection of the drive device. The upper shell top cover 39, the upper shell 1, the lower shell 2 and the bottom cover 3 are fixedly connected by screws 40 and nuts 41, making the installation of the foam pump more convenient.

[0033] The outer side of the air outlet nozzle 12 and the outer side of the liquid outlet nozzle 13 are both sleeved with O-shaped sealing rubber rings 42 to improve the sealing performance of the connection between the air outlet nozzle 12 and the liquid outlet nozzle 13 and the bubbler 14.

[0034] The bubbler 14 is provided with a first channel 43 connected to the air outlet nozzle 12, the bubbler 14 is provided with a second channel 44 connected to the liquid outlet nozzle 13, the bubbler 14 is provided with a mixing chamber 45 connected to the first channel 43 and the second channel 44 respectively, a foaming net 46 is installed at the end of the mixing chamber 45, and the bubbler 46 is provided with a foaming nozzle 47 connected to the mixing chamber 45, so as to improve the uniformity and sufficiency of foaming and facilitate, quickly and stably produce foam.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A micro continuous foam pump, characterized in that: The invention comprises an upper shell, a lower shell and a bottom cover, wherein an integrated piston which can move up and down and drive an air pump and a liquid pump at the same time is installed on the inner side of the upper shell, an air cylinder and a liquid cylinder are respectively arranged below the integrated piston, an air bag accommodated in the cylinder is installed at the bottom of the integrated piston, a piston for driving the liquid cylinder to inlet and outlet liquid is arranged on the integrated piston, a driving device for driving the integrated piston to move up and down is installed on the upper shell, a guide block is installed on the inner side of the lower shell, an air inlet nozzle, a liquid inlet nozzle, an air outlet nozzle and a liquid outlet nozzle are respectively arranged on the outer side of the bottom cover, a bubbler is connected to the air outlet nozzle and the liquid outlet nozzle, an air inlet check valve and an air outlet check valve are respectively installed on the top of the lower shell, the air inlet check valve and the air outlet check valve are respectively arranged below the air bag, the guide block is provided with an air inlet channel connected with the air inlet nozzle, and the top of the lower shell is provided with an air inlet hole connecting the air inlet channel and the air bag. The air inlet check valve cover is arranged on the top of the air inlet hole, the guide block is provided with an air outlet channel connected with the air outlet nozzle, the top of the lower shell is provided with an air outlet channel connected with the air bag, the air outlet check valve cover is arranged on the bottom of the air outlet hole, the lower shell is equipped with a liquid inlet check valve, the bottom cover is equipped with a liquid outlet check valve, the guide block is provided with a liquid inlet channel connected with the liquid inlet nozzle, the liquid inlet check valve cover is arranged on the top of the liquid inlet channel, the top of the guide block is provided with a liquid inlet cavity connected with the liquid inlet channel, the top of the lower shell is provided with a liquid inlet hole connecting the liquid inlet cavity and the liquid cylinder, the bottom of the guide block is provided with a liquid outlet cavity connected with the liquid outlet nozzle, the guide block is provided with a liquid outlet channel connected with the liquid outlet cavity, the top of the guide block is provided with a liquid outlet hole connecting the liquid outlet channel and the liquid cylinder, and the liquid outlet check valve cover is arranged at the bottom of the liquid outlet channel.

2. The micro continuous foam pump according to claim 1, characterized in that: The airbag is made of an elastomeric material, and the piston is made of a rigid material or an elastomeric material.

3. The micro continuous foam pump according to claim 1, characterized in that: The driving device comprises a motor, a motor shaft of the motor is connected to a driving gear, the driving gear is meshedly connected to a driven gear, the driven gear is provided with an eccentric cam, and the integrated piston is provided with a long strip through groove for connecting the eccentric cam.

4. The micro continuous foam pump according to claim 1, characterized in that: The outer side of the piston is sleeved with a sealing rubber ring.

5. The micro continuous foam pump according to claim 1, characterized in that: The liquid cylinder and the upper shell are integrally formed.

6. The micro continuous foam pump according to claim 1, characterized in that: The outer side of the integrated piston is provided with a longitudinal guide bar, and the inner side of the upper shell is provided with a longitudinal guide groove corresponding to the longitudinal guide bar.

7. The micro continuous foam pump according to claim 1, characterized in that: A first set of columns for the liquid inlet one-way valve to be mounted on is provided at the bottom of the lower shell body, the first set of columns and the liquid inlet one-way valve are interference fit, and the bottom surface of the liquid inlet one-way valve presses against the bottom of the liquid inlet cavity to achieve a sealing effect, and a second set of columns for the liquid outlet one-way valve to be mounted on the top of the bottom cover, the second set of columns and the liquid outlet one-way valve are interference fit, and the top surface of the liquid outlet one-way valve presses against the top of the liquid outlet cavity to achieve a sealing effect.

8. The micro continuous foam pump according to claim 1, characterized in that: The top cover of the upper shell is provided with an upper shell top cover, and the upper shell top cover, the upper shell, the lower shell and the bottom cover are fixedly connected by screws and nuts.

9. The micro continuous foam pump according to claim 1, characterized in that: The outer side of the air outlet nozzle and the outer side of the liquid outlet nozzle are both sleeved with O-shaped sealing rubber rings.

10. The micro continuous foam pump according to claim 1, characterized in that: The bubbler is provided with a first channel connected to the air outlet nozzle, the bubbler is provided with a second channel connected to the liquid outlet nozzle, the bubbler is provided with a mixing chamber connected to the first channel and the second channel respectively, a foaming net is installed at the end of the mixing chamber, and the bubbler is provided with a bubble outlet nozzle connected to the mixing chamber.

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