Miniature continuous foam pump

Abstract

The utility model 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 simultaneously driving an air pump and a liquid pump is arranged on the inner side of the upper shell, and an air cylinder and a liquid cylinder are respectively arranged below the integrated piston. An air bag contained in the air cylinder is installed at the bottom of the integrated piston, the integrated piston is provided with a piston for driving the hydraulic cylinder to enter and exit liquid, the upper shell is provided with a driving device for driving the integrated piston to move up and down, and a flow guide block is installed on the inner side of the lower shell. An air inlet one-way valve and an air outlet one-way valve are installed on the top of the lower shell, a liquid inlet one-way valve is installed on the lower shell, and a liquid outlet one-way valve is installed on the bottom cover. Liquid inlet and outlet and gas inlet and outlet are independent and separated, the eccentric cam simultaneously drives the two cylinders to synchronously pump gas and liquid, gas and liquid are strictly and synchronously fed and discharged, residual foam cannot be adhered to the foam outlet nozzle, the gas-liquid proportion change is small, the control precision is high, and foam is uniformly discharged.

Description

Technical Field

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

[0002] Foam pumps are commonly used products. Containers for shower gels, hand soaps, and other products commonly used daily are typically equipped with a foam pump to extract liquid from the container. A micro foam pump is a type of foam pump, but current micro foam pumps are primarily typified by diaphragm pumps. These pumps utilize a motor, via an eccentric wheel, to drive an airbag, which draws in gas and liquid (such as soap, detergent, or other foam-forming liquids) and mixes them to produce a foamy foam. However, diaphragm pumps are flexible pumps, and both liquid and air inlet and outlet are controlled by airbags. These airbags are easily clogged by liquid, resulting in insufficient thrust and a failure to pump high-viscosity fluids, including clogging, a short pump life, high noise levels, and backflow. Furthermore, the liquid and air inlet and outlet are inconsistent and out of sync, leading to residual foam clinging to the nozzle. Furthermore, the gas-liquid ratio entering the foam pump varies significantly, resulting in imprecise control and uneven foaming. Sometimes, even no liquid is pumped out, leading to failure, which impacts the normal use of the foam pump. Therefore, improvements to the prior art are necessary to overcome the shortcomings of the prior art. Utility Model Content

[0003] The purpose of the utility model 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 utility model is realized through the following technical solutions:

[0005] The top of the lower shell is provided with an air inlet check valve, an air outlet check valve and a liquid outlet, and the top of the lower shell is provided with an air inlet check valve, an air outlet check valve and a liquid outlet valve. and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former

[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, the motor shaft of the motor is connected to a driving gear, the driving gear is meshed with 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 connection to 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 sleeve column for the liquid inlet one-way valve to be sleeved is provided at the bottom of the lower shell body, the first sleeve column and the liquid inlet one-way valve have an 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 sleeve column for the liquid outlet one-way valve to be sleeved is provided at the top of the bottom cover, the second sleeve column and the liquid outlet one-way valve have an 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.

[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 nozzle connected to the mixing chamber.

[0015] Compared with the prior art, the present invention is provided with 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 on the liquid cylinder is provided at the bottom of the integrated piston, a guide block is provided with an air inlet channel connected with 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, an air outlet channel connected with the air outlet nozzle is provided at the top of the lower shell, an air outlet hole connecting the air outlet channel and the air bag is provided at the top of the lower shell, a guide block is provided with a liquid inlet channel connected with the liquid inlet nozzle, a liquid inlet cavity connected with 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 bottom of the guide block, a liquid outlet cavity connected with the liquid outlet nozzle is provided. The guide block is provided with a liquid outlet channel connected to the liquid outlet cavity, and the top of the guide block is provided with a liquid outlet hole connected to the liquid outlet channel and the liquid cylinder, so that the air cylinder and the liquid piston cylinder piston are integrated into one part, and the integrated piston moves up and down and drives the air bag and the piston up and down to 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 independently separated from the inlet and outlet of air, the inlet and outlet of liquid and the inlet and outlet of air are coherent and synchronized, 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 there will be no pumping liquid failure or failure, 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0017] Figure 1 This is a schematic structural diagram of the micro continuous foam pump of the utility model;

[0018] Figure 2 This is an exploded view of the structure of the micro continuous foam pump of the utility model;

[0019] Figure 3 This is a top view of the micro continuous foam pump of the utility model;

[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 utility model.

[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; 26-liquid outlet cavity; 27-liquid outlet channel; 28-liquid outlet; 29-motor; 30-driving gear; 31-driven gear; 32-eccentric cam; 33-long strip through groove; 34-sealing rubber ring; 35-longitudinal guide bar; 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 6The utility model is a micro continuous foam pump, comprising an upper shell 1, a lower shell 2 and a bottom cover 3. An integrated piston 4 is installed on the inner side of the upper shell 1, which can move up and down and drive the air pump and liquid pump at the same time. 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 is provided at the bottom of the integrated piston 4 and is sleeved on the liquid cylinder 6. The upper shell 1 is equipped with a driving device for driving the integrated piston 4 to move up and down. The lower shell 2 is provided with a plurality of pistons. A guide block 9 is installed on the inner 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 to a bubbler 14. The top of the lower shell 2 is respectively equipped with an air inlet check valve 15 and an air outlet check valve 16. 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 to the air inlet nozzle 10. The top of the lower shell 2 is provided with an air inlet channel 17 connected to the air inlet nozzle 10. 7 and the air inlet hole 18 of the airbag 7, the air inlet check valve 15 is covered on the top of the air inlet hole 18, 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 channel 19 connected to the air bag 7 and the air outlet hole 20, the air outlet check valve 16 is covered on the bottom of the air outlet hole 20, the lower shell 2 is equipped with a liquid inlet check valve 21, the bottom cover 3 is equipped 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, the liquid inlet check valve 21 A cover is provided on the top of the liquid inlet channel 23, a liquid inlet cavity 24 communicating with the liquid inlet channel 23 is provided on the top of the guide block 9, a liquid inlet hole 25 communicating with the liquid inlet cavity 24 and the liquid cylinder 6 is provided on the top of the lower shell 2, a liquid outlet cavity 26 communicating with the liquid outlet nozzle 13 is provided on the bottom of the guide block 9, a liquid outlet channel 27 communicating with the liquid outlet cavity 26 is provided on the top of the guide block 9, a liquid outlet hole 28 communicating with the liquid outlet channel 27 and the liquid cylinder 6 is provided, and a liquid outlet one-way valve 22 cover is provided on 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 flow in and out of the liquid is provided on the integrated piston 4. The guide block 9 is provided with an air inlet channel 17 connected to the air inlet nozzle 10. The top of the lower shell 2 is provided with an air inlet hole 18 connecting the air inlet channel 17 and the air bag 7. 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 air bag 7. The guide block 9 is provided with a liquid inlet channel 23 connected to the liquid inlet nozzle 11. 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 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 nozzle 13 The connected liquid outlet cavity 26, the guide block 9 is provided with a liquid outlet channel 27 connected to the liquid outlet cavity 26, and 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, so that the air cylinder and the liquid piston cylinder piston are integrated into one part, and the integrated piston 4 moves up and down while driving the air bag 7 and the piston 8 to move up and down while driving the air pump and the liquid pump, 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 and cause insufficient thrust, the inlet and outlet of liquid and the inlet and outlet of air are independently separated, the inlet and outlet of liquid and the inlet and outlet of air are coherent and synchronized, the foaming nozzle will not stick to residual foam, the gas-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 embodiment, 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 meshed with a driven gear 31, the driven gear 31 is provided with an eccentric cam 32, and the integrated piston 4 is provided with a long strip through groove 33 for connection to the eccentric cam 32. The motor 29 stably drives the integrated piston 4 to move up and down, and the integrated piston 4 moves up and down continuously and stably. The eccentric cam 32 simultaneously drives the two cylinders to pump air and liquid synchronously, thereby realizing synchronous inflow and outflow 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 provided on the outer side of the integrated piston 4 , and a longitudinal guide groove 36 corresponding to the longitudinal guide bar 35 is provided 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] The bottom of the lower shell 2 is provided with a first set of columns 37 for the liquid inlet one-way valve 15 to be sleeved. The first set of columns 37 and the liquid inlet one-way valve 15 have an interference fit, and the bottom surface of the liquid inlet one-way valve 15 presses against the bottom of the liquid inlet cavity 24 to achieve a sealing effect. The top of the bottom cover 3 is provided with a second set of columns 38 for the liquid outlet one-way valve 16 to be sleeved. The second set of columns 38 and the liquid outlet one-way valve 16 have an interference fit, and the top surface of the liquid outlet one-way valve 16 presses against the top of the liquid outlet cavity 26 to achieve a sealing effect. The interference fit of the columns squeezes 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 sides of the air outlet nozzle 12 and the outer sides 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, and 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 installed with a bubble nozzle 47 connected to the mixing chamber 45, which improves the uniformity and sufficiency of foaming and facilitates fast and stable foaming.

[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 replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A micro continuous foam pump, characterized in that: The top of the lower shell is provided with an air inlet check valve and an air outlet check valve, and the top of the lower shell is provided with an air inlet check valve, and the air inlet check valve and the air outlet check valve are connected with the air outlet valve of the air outlet to the air outlet. and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former 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 includes a motor, a motor shaft of the motor is connected to a driving gear, the driving gear is meshed with 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 connection with the eccentric cam.

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

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: 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.

7. The micro continuous foam pump according to claim 1, characterized in that: A first sleeve is provided at the bottom of the lower shell for the liquid inlet one-way valve to be sleeved, the first sleeve is interference fit with the liquid inlet one-way valve, 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 sleeve is provided at the top of the bottom cover for the liquid outlet one-way valve to be sleeved, the second sleeve is interference fit with the liquid outlet one-way valve, 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 sides of the air outlet nozzle and 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 nozzle connected to the mixing chamber.

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