An electric fluid pump with separate pump unit

Abstract

The present invention discloses an electric fluid pump with a separate pump mechanism, comprising a liquid storage bottle, a pump body installed in the liquid storage bottle, and an electric liquid discharger installed on the top of the liquid storage bottle, wherein the pump body is provided with a liquid cylinder piston, the electric liquid discharger is provided with a detachable piston connecting rod connected to the liquid cylinder piston, the center of the piston connecting rod is provided with a fluid flow channel, the electric liquid discharger comprises a shell, a driving device for driving the piston connecting rod to move up and down is installed in the shell, an adapter connected to the fluid flow channel is provided on the inner side of the top of the shell, the top of the piston connecting rod is sleeved on the inner side of the adapter, and the adapter is connected to a detachable liquid discharge nozzle assembly. The present invention has a simple structure and low manufacturing cost, realizes automatic liquid discharge or bubble discharge, the liquid discharge nozzle does not need to move up and down, the liquid discharge is accurate and stable, it is easy to use, the liquid discharge effect is good, no metal parts such as springs are immersed in the liquid, the liquid is not contaminated, and is suitable for various liquids.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid spray pumps, and in particular to an electric fluid pump with a separate pump unit. Background Art

[0002] The containers of shower gel, hand soap, etc. that people use daily are generally equipped with a hand pump to extract the liquid in the container. When using, the user presses the pressing head on the top of the container with his hand. The piston compresses the liquid in the cylinder under the force of the pressing head. The liquid is extracted from the liquid outlet through the tube body. The pressure on the pressing head is released, and the pressing head returns to its original position under the force of the spring. However, since the liquid outlet moves up and down when the liquid is discharged, if the amount of liquid used at one time is large, it must be pressed multiple times to reach the required amount, which is not conducive to stable liquid discharge and control of the liquid discharge volume. In addition, the spring is easily corroded by the liquid after being immersed in the liquid for a long time, resulting in poor liquid discharge effect. At the same time, harmful substances will be released, and the liquid will be contaminated, affecting the safety of use. In addition, the current electric liquid dispenser model is a pump-machine integrated model, which is high in cost and poor in reliability, and cannot meet the use requirements of consumers. Therefore, in order to avoid the shortcomings of the existing technology, it is necessary to make improvements to the existing technology. Summary of the Invention

[0003] The object of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide an electric fluid pump with a separate pump unit that is safe to use.

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

[0005] An electric fluid pump with a separate pump unit comprises a liquid storage bottle, a pump body installed in the liquid storage bottle and an electric liquid discharger installed on the top of the liquid storage bottle, the pump body is provided with a liquid cylinder piston, the electric liquid discharger is provided with a detachable piston connecting rod connected to the liquid cylinder piston, the center of the piston connecting rod is provided with a fluid flow channel, the electric liquid discharger comprises an outer shell, a driving device for driving the piston connecting rod to move up and down is installed in the outer shell, an adapter connected to the fluid flow channel is provided on the inner side of the top of the outer shell, the top of the piston connecting rod is sleeved on the inner side of the adapter, the adapter is connected to a detachable liquid outlet nozzle assembly, a sensing window is installed on the front side of the outer shell, a control circuit board electrically connected to the driving device is provided on the front side of the inner shell, and the control circuit board is provided with a sensor corresponding to the sensing window.

[0006] Furthermore, a bottle cap is screwed onto the top of the liquid storage bottle, the top of the bottle cap is screwed onto the bottom of the shell, and a sealing ring is sleeved on the outer side of the bottom of the piston connecting rod.

[0007] Furthermore, the adapter is provided with a liquid outlet cylinder, the liquid outlet cylinder is provided with a liquid outlet hole connected to the liquid outlet nozzle assembly, the fluid flow channel is connected to the liquid outlet cylinder, the top of the piston connecting rod is provided with a piston head, the piston head is sleeved on the inner side of the liquid outlet cylinder, and the outer side of the piston head is sleeved with a piston head sealing ring.

[0008] Furthermore, the liquid outlet nozzle assembly includes a liquid outlet nozzle and a liquid outlet connecting pipe sleeved on the inner side of the liquid outlet nozzle, and a first foaming net and a second foaming net are respectively installed at both ends of the liquid outlet connecting pipe.

[0009] Furthermore, the sensing window and the housing are integrally formed.

[0010] Furthermore, the driving device includes a motor, a worm connected to the motor shaft of the motor, a first driving gear meshing with the worm, a first driven gear connected to the first driving gear through a connecting rod, a second gear meshing with the first driven gear and a third gear meshing with the second gear, the third gear is provided with an eccentric wheel, the outer side of the lower part of the piston connecting rod is provided with a horizontal connecting block, and the inner side of the connecting block is provided with a long strip through groove for connecting the eccentric wheel.

[0011] Furthermore, a gear box and a motor cover for installing the driving device are provided in the shell, a trigger switch is installed on the control circuit board, and the piston connecting rod is provided with an abutment block corresponding to the trigger switch.

[0012] Furthermore, a battery box is provided in the shell, a battery electrically connected to the control circuit board is installed in the battery box, and a battery pressure cover is provided on the bottom cover of the battery box.

[0013] Furthermore, the pump body is provided with a liquid cylinder and an air cylinder connected to the liquid cylinder, the bottom of the piston connecting rod is threadedly connected to the liquid cylinder piston, a piston head is installed at the lower end of the liquid cylinder piston, a liquid inlet piston is sleeved on the outer side of the piston head, a liquid inlet groove is provided on the outer side of the piston head, and a steel ball for controlling one-way liquid inlet is installed at the bottom of the liquid cylinder.

[0014] Furthermore, a cylinder piston is sleeved on the inner side of the cylinder, an external air inlet hole is provided on the outer side of the cylinder, a connecting seat is sleeved on the outer side of the bottom of the piston connecting rod, and the connecting seat is respectively provided with an external air inlet groove and an internal air inlet groove, a plurality of internal air inlet holes are provided on the top of the cylinder piston, and an internal connecting groove is provided on the top of the liquid cylinder piston.

[0015] Compared with the prior art, the present invention comprises an electric fluid pump including a liquid storage bottle, a pump body installed in the liquid storage bottle and an electric liquid discharger installed on the top of the liquid storage bottle. The electric liquid discharger is provided with a detachable piston connecting rod connected to the liquid cylinder piston, a fluid flow channel is provided in the center of the piston connecting rod, a driving device for driving the piston connecting rod to move up and down is installed in the outer shell, an adapter connected to the fluid flow channel is provided on the inner side of the top of the outer shell, the top of the piston connecting rod is sleeved on the inner side of the adapter, and the adapter is connected to a detachable liquid discharge nozzle assembly, which makes the electric fluid pump simple in structure and low in manufacturing cost. The liquid discharge nozzle does not need to move up and down, is easy to use, has smooth liquid discharge, easy to control liquid discharge volume, accurate liquid discharge, stable liquid discharge, no metal parts such as springs are immersed in liquid for a long time, the liquid is not contaminated, can be applied to highly corrosive liquids, has good liquid discharge effect, and is safe to use. 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 an electric fluid pump with a separate pump unit according to the present invention;

[0018] Figure 2 This is an exploded view of the structure of the electric fluid pump with a separate pump unit of the present invention;

[0019] Figure 3 A schematic diagram of the longitudinal cross-sectional structure of the electric fluid pump with a separate pump unit according to the present invention;

[0020] Figure 4 This is an exploded view of the structure of the electric liquid dispenser of the present invention;

[0021] Figure 5 Schematic diagram of the structure of the driving device of the present invention;

[0022] Figure 6 Schematic diagram of the structure of the piston head of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the gas cylinder and the liquid cylinder of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the cylinder piston of the present invention;

[0025] Figure 9 It is a structural schematic diagram of the hydraulic cylinder piston of the present invention;

[0026] Figure 10It is a structural schematic diagram of the connecting seat of the present invention.

[0027] In the figure: 1-liquid storage bottle; 2-electric liquid dispensing machine; 3-liquid cylinder piston; 4-piston connecting rod; 5-fluid flow channel; 6-housing; 7-driving device; 8-adapter; 9-liquid outlet nozzle assembly; 10-sensing window; 11-control circuit board; 12-sensor; 13-motor; 14-worm; 15-first driving gear; 16-connecting rod; 17-first driven gear; 18-second gear; 19-third gear; 20-eccentric wheel; 21-connecting block; 22-long strip slot; 23-tooth box; 24-motor gland; 25-trigger switch; 26-rest block ;27-battery box;28-battery;29-battery pressure cover;30-bottle cap;31-liquid cylinder;32-cylinder;33-piston head;34-liquid inlet groove;35-steel ball;36-cylinder piston;37-external air inlet hole;38-connecting seat;39-external air inlet groove;40-inner air inlet groove;41-inner air inlet hole;42-inner connecting groove;43-liquid outlet cylinder;44-liquid outlet hole;45-liquid outlet nozzle;46-liquid outlet connecting pipe;47-first foaming net;48-second foaming net;49-piston head;50-piston head sealing ring;51-sealing ring;52-liquid inlet piston. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] like Figures 1 to 10The present invention is shown as an electric fluid pump with a separate pump unit, comprising a liquid storage bottle 1, a pump body installed in the liquid storage bottle 1, and an electric liquid discharger 2 installed on the top of the liquid storage bottle 1, the pump body is provided with a liquid cylinder piston 3, the electric liquid discharger 2 is provided with a piston connecting rod 4 connected to the liquid cylinder piston 3, the inner side of the piston connecting rod 4 is provided with a fluid flow channel 5, the electric liquid discharger 2 comprises an outer shell 6, a driving device 7 for driving the piston connecting rod 4 to move up and down is installed in the outer shell 6, an adapter 8 connected to the fluid flow channel 5 is provided on the inner side of the top of the outer shell 6, the top of the piston connecting rod 4 is sleeved on the inner side of the adapter 8, the adapter 8 is detachably connected to a liquid discharge nozzle assembly 9, a sensing window 10 is installed on the front side of the outer shell 1, a control circuit board 11 electrically connected to the driving device 7 is provided on the front side of the inner shell 6, and the control circuit board 11 is provided with a sensor 12 corresponding to the sensing window 10. The electric fluid pump includes a liquid storage bottle 1, a pump body installed in the liquid storage bottle 1 and an electric liquid discharger 2 installed on the top of the liquid storage bottle 1. The electric liquid discharger 2 is provided with a piston connecting rod 4 connected to the liquid cylinder piston 3, and a fluid flow channel 5 is provided on the inner side of the piston connecting rod 4. A driving device 7 for driving the piston connecting rod 4 to move up and down is installed in the outer shell 6. An adapter 8 connected to the fluid flow channel is provided on the inner side of the top of the outer shell 6. The top of the piston connecting rod 4 is sleeved on the inner side of the adapter 8. The adapter 8 is detachably connected with a liquid discharge nozzle assembly 9, which makes the electric fluid pump simple in structure and low in manufacturing cost. The liquid discharge nozzle does not need to move up and down, is easy to use, has smooth liquid discharge, easy to control liquid discharge volume, accurate liquid discharge, stable liquid discharge, no metal parts such as springs are immersed in liquid for a long time, the liquid is not contaminated, can be applied to highly corrosive liquids, has good liquid discharge effect, and is safe to use.

[0030] The top of the liquid storage bottle 1 is screwed with a bottle cap 30, the top of the bottle cap 30 is screwed to the bottom of the shell 1, and a sealing ring 51 is sleeved on the outer side of the bottom of the piston connecting rod 4, so that the disassembly and assembly of the electric liquid dispensing machine 2 is quick and convenient, the connection is well sealed, and the installation is stable.

[0031] The adapter 8 is provided with a liquid outlet cylinder 43, the liquid outlet cylinder 43 is provided with a liquid outlet hole 44 connected to the liquid outlet nozzle assembly 9, the fluid flow channel 5 is connected to the liquid outlet cylinder 43, and the top of the piston connecting rod 4 is provided with a piston head 49, the piston head 49 is sleeved on the inner side of the liquid outlet cylinder 43, and the outer side of the piston head 49 is sleeved with a piston head sealing ring 50. The liquid outlet cylinder 43 plays the role of caching the liquid, and the piston head 49 moves up and down to control the liquid discharge. The liquid outlet nozzle assembly 9 does not need to move up and down, so that the liquid discharge is more stable and more uniform.

[0032] The liquid outlet nozzle assembly 9 includes a liquid outlet nozzle 45 and a liquid outlet connecting pipe 46 sleeved on the inner side of the liquid outlet nozzle 45. The first foaming net 47 and the second foaming net 48 are respectively installed at both ends of the liquid outlet connecting pipe 46, so that the liquid outlet nozzle assembly 9 is easy to disassemble and replace as a whole, and the foaming is more sufficient and more stable.

[0033] The sensing window 10 and the housing 6 are integrally formed, thereby improving the sealing performance of the housing 6 , reducing the number of installation steps for the sensing window 10 , and lowering production costs.

[0034] The driving device 7 includes a motor 13, a worm 14 connected to the motor shaft of the motor 13, a first driving gear 15 meshing with the worm 14, a first driven gear 17 connected to the first driving gear 15 through a connecting rod 16, a second gear 18 meshing with the first driven gear 17 and a third gear 19 meshing with the second gear 18. The third gear 19 is provided with an eccentric wheel 20. The outer side of the lower part of the piston connecting rod 4 is provided with a horizontal connecting block 21, and the inner side of the connecting block 21 is provided with a long strip through groove 22 for connecting the eccentric wheel 20, so that the upper and lower transmission connections of the piston connecting rod 4 are stable, the speed control is accurate, and the liquid discharge is accurate.

[0035] A gear box 23 and a motor cover 24 for installing the drive device 7 are provided in the outer shell 6. A trigger switch 25 is installed on the control circuit board 11. The piston connecting rod 4 is provided with a supporting block 26 corresponding to the trigger switch 25. When the supporting block 26 presses against the trigger switch 25, the electric liquid discharger 2 stops running, making the up and down movement of the piston connecting rod 4 more stable and the start and stop control of the piston connecting rod 4 accurate.

[0036] A battery box 27 is provided in the housing 6 , and a battery 28 electrically connected to the control circuit board 11 is installed in the battery box 27 . A battery pressing cover 29 is provided on the bottom cover of the battery box 27 to facilitate stable installation and replacement of the battery.

[0037] The pump body is provided with a liquid cylinder 31 and an air cylinder 32 connected to the liquid cylinder 31. The bottom of the piston connecting rod 4 is screwed to the liquid cylinder piston 3. A piston head 33 is installed at the lower end of the liquid cylinder piston 3. A liquid inlet piston 52 is sleeved on the outer side of the piston head 33. A liquid inlet groove 34 is provided on the outer side of the piston head 33. A steel ball 35 for controlling one-way liquid inlet is installed at the bottom of the liquid cylinder 31. When the piston connecting rod 4 moves downward, it drives the piston head 33 to move downward. The liquid in the liquid cylinder 31 enters the liquid cylinder piston 3 from the liquid inlet groove 34. When the piston connecting rod 4 moves downward, the liquid in the liquid storage bottle 1 enters the liquid cylinder 31, realizing one-way liquid inlet of the piston connecting rod 4 and stable liquid discharge.

[0038] A cylinder piston 36 is sleeved on the inner side of the cylinder 32, and an external air inlet hole 37 is provided on the outer side of the cylinder 32. A connecting seat 38 is sleeved on the outer side of the bottom of the piston connecting rod 4, and the connecting seat 38 is respectively provided with an external air inlet groove 39 and an internal air inlet groove 40. A plurality of internal air inlet holes 41 are provided on the top of the cylinder piston 36, and an internal connecting groove 42 is provided on the top of the liquid cylinder piston 3. When the piston connecting rod 4 moves downward, it drives the connecting seat 38 and the cylinder piston 36 to move downward, and the gas in the cylinder 32 enters the liquid cylinder piston 3 from the internal air inlet hole 41, the external air inlet groove 39, the internal air inlet groove 40 and the internal connecting groove 42, and mixes with the liquid in the liquid cylinder piston 3 to produce bubbles. When the piston connecting rod 4 moves upward, the gas enters the cylinder 32 from the external air inlet hole 37 on the outside of the cylinder 32, so that the gas can stably enter the liquid cylinder piston 3 and mix with the liquid in the liquid cylinder piston 3 to produce bubbles, and the bubbling is stable and uniform.

[0039] 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric fluid pump with a separate pump unit, characterized in that: The invention comprises a liquid storage bottle, a pump body installed in the liquid storage bottle and an electric liquid discharger installed on the top of the liquid storage bottle, the pump body is provided with a liquid cylinder piston, the electric liquid discharger is provided with a detachable piston connecting rod connected to the liquid cylinder piston, the center of the piston connecting rod is provided with a fluid flow channel, the electric liquid discharger comprises a shell, a driving device for driving the piston connecting rod to move up and down is installed in the shell, an adapter connected to the fluid flow channel is provided on the inner side of the top of the shell, the top of the piston connecting rod is sleeved on the inner side of the adapter, the adapter is connected to a detachable liquid discharge nozzle assembly, a sensing window is installed on the front side of the shell, a control circuit board electrically connected to the driving device is provided on the front side of the shell, and the control circuit board is provided with a sensor corresponding to the sensing window. The top of the liquid storage bottle is screwed with a bottle cap, the top of the bottle cap is screwed with the bottom of the shell, the outer side of the bottom of the piston connecting rod is sleeved with a sealing ring, the pump body is provided with a liquid cylinder and a cylinder connected to the liquid cylinder, the bottom of the piston connecting rod is screwed with the liquid cylinder piston, the lower end of the liquid cylinder piston is provided with a piston head, the outer side of the piston head is sleeved with a liquid inlet piston, the outer side of the piston head is provided with a liquid inlet groove, the bottom of the liquid cylinder is provided with a steel ball for controlling one-way liquid inlet, the inner side of the cylinder is sleeved with a cylinder piston, the outer side of the cylinder is provided with an external air inlet hole, the outer side of the bottom of the piston connecting rod is sleeved with a connecting seat, the connecting seat is respectively provided with an external air inlet groove and an internal air inlet groove, the top of the cylinder piston is provided with a plurality of internal air inlet holes, and the top of the liquid cylinder piston is provided with an internal connecting groove.

2. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: The adapter is provided with a liquid outlet cylinder, the liquid outlet cylinder is provided with a liquid outlet hole connected to the liquid outlet nozzle assembly, the fluid flow channel is connected to the liquid outlet cylinder, the top of the piston connecting rod is provided with a piston head, the piston head is sleeved on the inner side of the liquid outlet cylinder, and the outer side of the piston head is sleeved with a piston head sealing ring.

3. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: The liquid outlet nozzle assembly includes a liquid outlet nozzle and a liquid outlet connecting pipe sleeved on the inner side of the liquid outlet nozzle, and a first foaming net and a second foaming net are respectively installed on both ends of the liquid outlet connecting pipe.

4. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: The sensing window is integrally formed with the housing.

5. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: The driving device includes a motor, a worm connected to the motor shaft of the motor, a first driving gear meshing with the worm, a first driven gear transmission-connected to the first driving gear via a connecting rod, a second gear meshing with the first driven gear, and a third gear meshing with the second gear. The third gear is provided with an eccentric wheel, and a horizontal connecting block is provided on the outer side of the lower part of the piston connecting rod, and a long strip through groove for connecting the eccentric wheel is provided on the inner side of the connecting block.

6. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: A gear box and a motor pressure cover for installing the driving device are provided in the shell, a trigger switch is installed on the control circuit board, and the piston connecting rod is provided with an abutment block corresponding to the trigger switch.

7. The electric fluid pump with a separate pump unit according to claim 1, characterized in that: A battery box is provided in the shell, and a battery electrically connected to the control circuit board is installed in the battery box. The bottom cover of the battery box is provided with a battery pressure cover.

Images