Induction soap dispenser

Abstract

The present invention proposes an induction soap dispenser, comprising a liquid storage bottle, a sensor and a liquid outlet mechanism, the liquid outlet mechanism comprising a pump head assembly, the pump head assembly comprising a screw cover, a liquid guide tube, a hollow plunger, a sealing ball, a first spring, a piston and a liquid outlet nozzle, the liquid outlet mechanism also comprises a back-sucking device and a driving device, the back-sucking device comprises a fixing frame screwed to the outside of the screw cover, a pressure cover inserted on the fixing frame, a latex ball arranged between the pressure cover and the fixing frame, and a liquid suction tube and a liquid return tube connected to the latex ball, the driving device comprises a shell that is snap-fitted with the fixing frame, a driving motor arranged in the shell, a driving shaft connected to the driving motor in a transmission manner, a slider threadedly connected to the driving shaft, and a push rod fixedly connected to the slider, the bottom end of the push rod abuts against the top of the pressure cover. The present invention can prevent the soap liquid from flowing out of the liquid outlet nozzle after the user has finished using it, saves the use of soap liquid and improves the cleanliness of the wash basin.

Description

Technical Field

[0001] The invention relates to the technical field of bathroom products, and in particular to an induction soap dispenser. Background Art

[0002] As people's living standards gradually improve, soap dispensers have been increasingly used in toilets. In existing foam soap dispensers, a liquid storage bottle is usually provided. Usually, there are two ways to design the liquid storage bottle. One is that the bottle mouth is upward, and the soap liquid is extracted by a straw inserted into the bottle; the other is that a liquid outlet is provided at the bottom of the liquid storage bottle and a fixed connection is adopted between the soap dispenser and the liquid soap. However, when the first design is adopted, the soap liquid often remains in the liquid outlet after the soap liquid is extracted, and the soap liquid easily flows out and drips onto the wash basin, resulting in a waste of soap liquid and making the wash basin dirty and messy, which often needs to be cleaned, increasing the workload. Summary of the invention

[0003] Based on the above problems, the present invention aims to provide an induction soap dispenser which can prevent soap from flowing out of the liquid outlet after the user has finished using the soap dispenser.

[0004] In view of the above problems, the following technical solutions are provided: an induction soap dispenser, comprising a liquid storage bottle, a sensor and a liquid discharge mechanism, wherein the liquid discharge mechanism comprises a pump head assembly, wherein the pump head assembly comprises a screw cover, a liquid guide tube, a hollow plunger, a sealing ball, a first spring, a piston and a liquid discharge nozzle, wherein the top end of the liquid guide tube is engaged with the screw cover, wherein the screw cover is screwed to the bottle mouth of the liquid storage bottle, wherein a liquid storage cavity and a liquid inlet cavity are arranged up and down in the liquid guide tube, wherein the sealing ball is used for connecting or disconnecting the liquid storage cavity and the liquid inlet cavity, wherein the liquid discharge mechanism comprises a pump head assembly, wherein the pump head assembly comprises a screw cover, a liquid guide tube, a hollow plunger, a sealing ball, a first spring, a piston and a liquid discharge nozzle, wherein the top end of the liquid guide tube is engaged with the screw cover, wherein the screw cover is screwed to the bottle mouth of the liquid storage bottle, wherein the liquid guide tube is provided with a liquid storage cavity and a liquid inlet cavity arranged up and down ... pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump head assembly comprises a pump head assembly, wherein the pump The piston sleeve is arranged on the hollow plunger and is located in the liquid storage chamber. The two ends of the first spring respectively abut against the bottom end of the hollow plunger and the bottom wall of the liquid storage chamber. The top end of the hollow plunger passes through the screw cover. The liquid outlet nozzle is connected to the hollow plunger. The liquid outlet mechanism also includes a sucking device and a driving device. The sucking device includes a fixing frame screwed to the outside of the screw cover, a pressure cover inserted on the fixing frame, a latex ball arranged between the pressure cover and the fixing frame, and a liquid suction pipe and a liquid return pipe connected to the latex ball. The pressure cover is provided with a The accommodating cavity for placing the latex ball is provided with a slide groove on the side wall of the fixing frame, a driving rod matched with the slide groove is provided on the outer circumferential wall of the hollow plunger, the liquid outlet nozzle is arranged through the slide groove and is located below the driving rod, a pressure rod matched with the slide groove and corresponding to the driving rod is provided at the bottom of the pressure cover, a limiting opening corresponding to the suction pipe and the return pipe is provided on the outer circumferential wall of the pressure cover, the pressure cover can be displaced up and down relative to the fixing frame, the suction pipe is connected to the liquid outlet nozzle, the screw cover is connected to the top of the liquid guide pipe The part is provided with a mounting hole for the return pipe to be connected to the liquid storage bottle, the liquid suction pipe and the liquid return pipe are both connected with a one-way valve, the one-way valve at the liquid suction pipe is reversely connected to the one-way valve at the liquid return pipe, the driving device includes a shell body that is snap-fitted with the fixing frame, a driving motor arranged in the shell body, a driving shaft that is transmission-connected to the driving motor, a slider that is threadedly connected to the driving shaft, and a push rod that is fixedly connected to the slider, the bottom end of the push rod is against the top of the pressure cover, and the sensor is located on the side of the bottom end of the shell body facing the liquid outlet nozzle.

[0005] In the above structure, when the user uses it, the sensor senses the user's hand approaching, the drive motor starts, and the drive shaft is controlled to rotate, so that the slider drives the push rod to move downward, and the push rod presses the pressure cover, so that the pressure cover moves toward the fixed frame, compressing the latex ball, and the gas in the latex ball enters the liquid storage bottle through the one-way valve at the return pipe, and the pressure cover continues to be pressed, the pressure rod and the drive rod are abutted, pushing the drive rod to move downward, so that the hollow plunger moves downward relative to the piston, the first spring is in a compressed state, the sealing ball floats upward, the liquid storage chamber is connected with the liquid inlet chamber, and the soap liquid in the liquid storage bottle flows into the liquid storage chamber through the liquid inlet chamber, and then enters the hollow plunger through the liquid inlet hole on the hollow plunger. After the inner cavity of the liquid is filled, it flows out from the liquid outlet nozzle. When the pressure cover is pressed down to the maximum stroke, the limit plate on the hollow plunger is against the top of the piston; when the push rod reaches the maximum stroke, the driving motor is reversed, so that the slider drives the push rod to reset, so that the pressure cover can be moved upward to reset, and the latex ball is inhaled through the one-way valve at the liquid suction tube, and the excess soap liquid in the liquid outlet nozzle is sucked into the latex ball, so that the remaining soap liquid in the liquid outlet nozzle can be prevented from dripping on the wash basin. After the latex ball is inhaled, it quickly recovers and pushes the pressure cover upward. The hollow plunger is pushed upward to reset by the elastic force of the first spring, so that the liquid storage cavity cannot be connected with the inner cavity of the hollow plunger. The sealing ball is reset to cut off the connection between the liquid storage cavity and the liquid inlet cavity. By setting up a back-suction device, after the liquid suction tube absorbs the soap liquid in the liquid outlet nozzle into the latex ball, it can flow to the liquid storage bottle through the return pipe, thereby improving the utilization rate of the soap liquid, avoiding dripping and wasting on the wash basin, and making the wash basin tidier and reducing the workload. By pressing the latex ball, the air pressure in the liquid storage cavity is increased, thereby increasing the speed at which the soap liquid flows into the liquid inlet cavity, improving the liquid discharge efficiency of the present invention, and improving the reliability of the present invention. By providing a fixing frame, the latex ball can be easily fixed and supported, and can cooperate with the gland to facilitate the up and down displacement of the gland, thereby improving the reliability of the present invention. By providing a mounting hole to fix the liquid return pipe and make it communicate with the inner cavity of the liquid storage bottle, the liquid discharge mechanism can be installed on other bottles after the user removes it from the liquid storage bottle, thereby expanding the scope of application of the present invention.

[0006] The present invention is further configured such that a sensor is provided in the slide slot below the driving rod.

[0007] With the above structure, when the driving rod is displaced to abut against the sensor, the sensor controls the driving motor to reverse, so that the driving rod can be displaced upward, thereby improving the controllability of the driving motor and the reliability of the present invention.

[0008] The present invention is further configured such that two groups of driving rods are symmetrically arranged relative to the central axis of the hollow plunger.

[0009] The above structure can improve the stability of the hollow plunger when the pressure rod pushes the driving rod and moves, thereby improving the reliability of the present invention.

[0010] The present invention is further configured such that the liquid outlet nozzle includes a straight tube connected to the hollow plunger and a bent tube connected to the straight tube, the bent tube is inclined outward and downward relative to the straight tube, and the liquid suction tube is connected to the bent tube.

[0011] In the above structure, the bent pipe can be provided to facilitate the discharge of liquid, thereby improving the convenience of the present invention. By connecting the liquid suction pipe with the bent pipe, the soap liquid can be easily discharged when the user uses the soap dispenser, and the soap liquid is prevented from flowing out onto the wash basin after the user uses the soap dispenser, thereby improving the reliability of the present invention.

[0012] The present invention is further configured such that a limiting groove is provided on the top of the fixing frame, and a limiting block adapted to the limiting groove is provided on the bottom of the pressure cover.

[0013] The above structure can facilitate the positioning and installation of the pressure cover and the fixing frame, and can facilitate the upward and downward displacement of the pressure cover relative to the fixing frame, thereby improving the reliability of the present invention.

[0014] The present invention is further configured such that a blocking block is provided at the bottom of the hollow plunger, and a slot for fixing the first spring is provided at the bottom of the blocking block.

[0015] By adopting the above structure, the stability of the first spring can be improved, thereby improving the reliability of the pump head assembly.

[0016] The present invention is further configured such that a sealing groove is provided at the connection between the hollow plunger and the screw cover, a sealing gasket is provided in the sealing groove, and a sealing gland is provided on the sealing gasket.

[0017] In the above structure, the sealing gasket can be provided to improve the sealing performance between the hollow plunger and the screw cap, thereby improving the sealing performance of the present invention. The sealing gland can be provided to improve the stability and reliability of the sealing gasket, thereby further improving the sealing performance of the present invention.

[0018] The present invention is further configured such that a fixing column abutting against the sealing cover is provided in the fixing frame, a positioning hole adapted to the hollow plunger is provided at the bottom end of the fixing column, and an opening groove corresponding to the driving rod is provided on the outer circumferential wall of the fixing column.

[0019] The above structure can improve the stability of the hollow plunger during displacement, and can facilitate the positioning and installation of the hollow plunger. The tightness of the sealing gasket can be further improved by the fixing column, thereby improving the reliability of the present invention.

[0020] The present invention is further configured such that the one-way valve comprises a valve body and a valve cover threadedly connected to the valve body, wherein a valve cavity is provided in the valve body, and a second spring and a ball abutting against the second spring and adapted to seal with the inner end of the valve cover are provided in the valve cavity.

[0021] The above structure can facilitate the re-absorption of excess soap liquid in the liquid outlet nozzle into the liquid storage barrel, thereby improving the reliability of the present invention.

[0022] The present invention is further configured such that a U-shaped observation port is provided on the side wall of the liquid storage bottle.

[0023] By adopting the above structure, the remaining amount of soap liquid in the liquid storage bottle can be visually observed, so that it is convenient for the user to add soap liquid, thereby improving the reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0026] Figure 3 for Figure 2 A magnified view of the structure at center.

[0027] Meaning of the numbers in the figure: 1-liquid storage bottle; 2-sensor; 3-liquid discharge mechanism; 31-pump head assembly; 311-screw cover; 312-liquid guide tube; 313-hollow plunger; 314-sealing ball; 315-first spring; 316-piston; 317-liquid outlet nozzle; 3121-liquid storage chamber; 3122-liquid inlet chamber; 32-return suction device; 33-driving device; 321-fixed frame; 322-pressure cover; 323-latex ball; 324-liquid suction tube; 325-return liquid tube; 3221-accommodating chamber; 3211-slideway; 3131-driving rod; 3222-pressure rod; 3223-limiting Position port; 4-mounting hole; 5-check valve; 331-housing; 332-driving motor; 333-driving shaft; 334-slider; 335-push rod; 6-sensor; 3171-straight pipe; 3172-bend pipe; 3212-limiting groove; 3224-limiting block; 3132-blocking block; 31321-slot; 3133-sealing groove; 7-sealing gasket; 71-sealing gland; 3213-fixing column; 32131-positioning hole; 32132-opening groove; 51-valve body; 52-valve cover; 511-valve cavity; 53-second spring; 54-ball; 8-U-shaped observation port. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figures 1 to 3The inductive soap dispenser shown in the figure includes a liquid storage bottle 1, a sensor 2 and a liquid discharge mechanism 3, wherein the liquid discharge mechanism 3 includes a pump head assembly 31, and the pump head assembly 31 includes a screw cover 311, a liquid guide tube 312, a hollow plunger 313, a sealing ball 314, a first spring 315, a piston 316 and a liquid discharge nozzle 317. The top of the liquid guide tube 312 is engaged with the screw cover 311, and the screw cover 311 is screwed to the bottle mouth of the liquid storage bottle 1. The liquid guide tube 312 is provided with a liquid storage cavity 3121 and a liquid inlet cavity 3122 arranged up and down. The sealing ball 314 is used for connecting or disconnecting the liquid storage cavity 3121 and the liquid inlet cavity 3122. The piston 316 is sleeved on the hollow plunger 313 and is located at In the liquid storage chamber 3121, the two ends of the first spring 315 respectively abut against the bottom end of the hollow plunger 313 and the bottom wall of the liquid storage chamber 3121, the top of the hollow plunger 313 is arranged through the screw cover 311, the liquid outlet nozzle 317 is connected with the hollow plunger 313, the liquid outlet mechanism 3 also includes a back-sucking device 32 and a driving device 33, the back-sucking device 32 includes a fixing frame 321 screwed to the outside of the screw cover 311, a pressure cover 322 inserted on the fixing frame 321, a latex ball 323 arranged between the pressure cover 322 and the fixing frame 321, and a suction tube 324 and a return tube 325 connected with the latex ball 323, and the pressure cover 322 is provided with a container for placing the latex ball 323 The hollow plunger 313 is provided with a driving rod 3131 adapted to the sliding groove 3211, and the liquid outlet nozzle 317 is arranged through the sliding groove 3211 and is located below the driving rod 3131. The bottom of the pressure cover 322 is provided with a pressure rod 3222 adapted to the sliding groove 3211 and corresponding to the driving rod 3131. The outer circumferential wall of the pressure cover 322 is provided with a limiting opening 3223 corresponding to the liquid suction pipe 324 and the liquid return pipe 325. The pressure cover 322 can move up and down relative to the fixed frame 321. The liquid suction pipe 324 is connected to the liquid outlet nozzle 317. The screw cover 311 is connected to the liquid guide pipe 31 2 is provided with a mounting hole 4 for the liquid return pipe 325 to be connected to the liquid storage bottle 1, the liquid suction pipe 324 and the liquid return pipe 325 are both connected with a one-way valve 5, the one-way valve 5 at the liquid suction pipe 324 is reversely connected with the one-way valve 5 at the liquid return pipe 325, the driving device 33 comprises a shell 331 snap-fitted with the fixing frame 321, a driving motor 332 arranged in the shell 331, a driving shaft 333 drivingly connected to the driving motor 332, a slider 334 threadedly connected to the driving shaft 333, and a push rod 335 fixedly connected to the slider 334, the bottom end of the push rod 335 is against the top of the pressure cover 322, and the sensor 2 is located at the bottom end of the shell 331 on the side facing the liquid outlet nozzle 317.

[0030] In the above structure, when the user uses it, the sensor 2 senses the user's hand approaching, the driving motor 332 is started, and the driving shaft 333 is controlled to rotate, so that the slider 334 drives the push rod 335 to move downward, and the push rod 335 presses the pressure cover 322, so that the pressure cover 322 moves toward the fixing frame 321, compressing the latex ball 323, and the gas in the latex ball 323 enters the liquid storage bottle 1 through the one-way valve 5 at the return pipe 325, and continues to press the pressure cover 322. The pressure rod 3222 is against the driving rod 3131, pushing the driving rod 3131 to move downward, so that the hollow plunger 313 moves downward relative to the piston 316, and the first spring 315 is in a compressed state. The sealing ball 314 floats upward, and the liquid storage chamber 3121 is connected with the liquid inlet chamber 3122. After the soap liquid in the liquid storage bottle 1 flows into the liquid storage chamber 3121 through the liquid inlet chamber 3122, it enters through the liquid inlet hole on the hollow plunger 313 After the inner cavity of the hollow plunger 313 is filled, it flows out from the liquid outlet nozzle 317. When the pressure cover 322 is pressed down to the maximum stroke, the limit plate on the hollow plunger 313 abuts against the top of the piston 316; when the push rod 335 reaches the maximum stroke, the driving motor 332 reverses, so that the slider 334 drives the push rod 335 to reset, so that the pressure cover 322 can move upward to reset, and the latex ball 323 takes in air through the one-way valve 5 at the suction tube 324, and the liquid outlet nozzle 317 is closed. 7, the excess soap liquid is sucked into the latex ball 323, thereby preventing the remaining soap liquid in the liquid outlet 317 from dripping onto the wash basin. The latex ball 323 recovers quickly after taking in air, and pushes the pressure cover 322 upward, and the hollow plunger 313 is pushed upward to reset by the elastic force of the first spring 315, so that the liquid storage chamber 3121 cannot be connected with the inner cavity of the hollow plunger 313, and the sealing ball 314 is reset to cut off the connection between the liquid storage chamber 3121 and the liquid inlet chamber 3122. By setting up the back-sucking device 32, after the soap liquid in the liquid outlet 317 is absorbed into the latex ball 323 by the liquid pipe 324, it can flow into the liquid storage bottle 1 through the liquid return pipe 325, thereby improving the utilization rate of the soap liquid, avoiding dripping and wasting on the wash basin, making the wash basin tidier, and reducing the workload. By pressing the latex ball 323, the air pressure in the liquid storage cavity 3121 is increased, thereby increasing the speed at which the soap liquid flows into the liquid inlet cavity 3122, improving the liquid discharge efficiency of the present invention, and improving the reliability of the present invention. By providing a fixing frame 321, it is convenient to fix and support the latex ball 323, and it can cooperate with the gland 322 to facilitate the up and down displacement of the gland 322, thereby improving the reliability of the present invention. By providing a mounting hole 4 to fix the liquid return pipe 325 and make it communicate with the inner cavity of the liquid storage bottle 1, it can be installed on other bottles after the user removes the liquid discharge mechanism 3 from the liquid storage bottle 1, thereby expanding the scope of application of the present invention.

[0031] In this embodiment, a sensor 6 is provided in the slide groove 3211 below the driving rod 3131 .

[0032] With the above structure, when the driving rod 3131 is displaced to abut against the sensor 6, the sensor 6 controls the driving motor 332 to reverse, so that the driving rod 3131 can be displaced upward, thereby improving the controllability of the driving motor 332 and the reliability of the present invention.

[0033] In this embodiment, two groups of driving rods 3131 are symmetrically arranged relative to the central axis of the hollow plunger 313 .

[0034] The above structure can improve the stability of the hollow plunger 313 when the pressure rod 3222 pushes the driving rod 3131 and moves, thereby improving the reliability of the present invention.

[0035] In this embodiment, the liquid outlet nozzle 317 includes a straight tube 3171 connected to the hollow plunger 313 and a curved tube 3172 connected to the straight tube 3171 . The curved tube 3172 is inclined outward and downward relative to the straight tube 3171 , and the liquid suction tube 324 is connected to the curved tube 3172 .

[0036] In the above structure, the bent pipe 3172 is provided to facilitate the discharge of liquid, thereby improving the convenience of the present invention. By connecting the suction pipe 324 with the bent pipe 3172, the soap liquid can be easily discharged when the user uses the soap dispenser, and when the user finishes using the soap dispenser, the soap liquid is prevented from flowing out onto the wash basin, thereby improving the reliability of the present invention.

[0037] In this embodiment, a limiting groove 3212 is defined at the top of the fixing frame 321 , and a limiting block 3224 matched with the limiting groove 3212 is defined at the bottom of the pressing cover 322 .

[0038] The above structure can facilitate the positioning and installation of the pressure cover 322 and the fixing frame 321, and can facilitate the upward and downward displacement of the pressure cover 322 relative to the fixing frame 321, thereby improving the reliability of the present invention.

[0039] In this embodiment, a blocking block 3132 is provided at the bottom of the hollow plunger 313 , and a clamping groove 31321 for fixing the first spring 315 is provided at the bottom of the blocking block 3132 .

[0040] By adopting the above structure, the stability of the first spring 315 can be improved, thereby improving the reliability of the pump head assembly 31.

[0041] In this embodiment, a sealing groove 3133 is provided at the connection between the hollow plunger 313 and the screw cover 311 , a sealing gasket 7 is provided in the sealing groove 3133 , and a sealing gland 71322 is provided on the sealing gasket 7 .

[0042] In the above structure, the sealing gasket 7 can improve the sealing between the hollow plunger 313 and the screw cover 311, thereby improving the sealing of the present invention. The sealing gland 71322 can improve the stability and reliability of the sealing gasket 7, thereby further improving the sealing of the present invention.

[0043] In this embodiment, a fixing column 3213 abutting against the sealing cover 71322 is provided in the fixing frame 321, a positioning hole 32131 adapted to the hollow plunger 313 is provided at the bottom end of the fixing column 3213, and an opening groove 32132 corresponding to the driving rod 3131 is provided on the outer circumferential wall of the fixing column 3213.

[0044] The above structure can improve the stability of the hollow plunger 313 during displacement, and can facilitate the positioning and installation of the hollow plunger 313. The tightness of the sealing gasket 7 can be further improved by the fixing column 3213, thereby improving the reliability of the present invention.

[0045] In this embodiment, the one-way valve 5 includes a valve body 51 and a valve cover 52 screwed to the valve body 51. A valve cavity 511 is provided in the valve body 51. A second spring 53 and a ball 54 that abuts against the second spring 53 and is adapted to seal with the inner end of the valve cover 52 are provided in the valve cavity 511.

[0046] The above structure can facilitate the re-sucking of excess soap liquid in the liquid outlet nozzle 317 into the liquid storage barrel, thereby improving the reliability of the present invention.

[0047] In this embodiment, a U-shaped observation port 8 is provided on the side wall of the liquid storage bottle 1 .

[0048] By adopting the above structure, the remaining amount of soap liquid in the liquid storage bottle 1 can be visually observed, so that it is convenient for the user to add soap liquid, thereby improving the reliability of the present invention.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.

Claims

1. An induction soap dispenser, comprising a liquid storage bottle, a sensor and a liquid discharge mechanism, wherein the liquid discharge mechanism comprises a pump head assembly, wherein the pump head assembly comprises a screw cover, a liquid guide tube, a hollow plunger, a sealing ball, a first spring, a piston and a liquid discharge nozzle, wherein the top end of the liquid guide tube is engaged with the screw cover, wherein the screw cover is screwed to the bottle mouth of the liquid storage bottle, wherein a liquid storage chamber and a liquid inlet chamber are arranged up and down in the liquid guide tube, wherein the sealing ball is used for connecting or disconnecting the liquid storage chamber and the liquid inlet chamber, wherein the piston is sleeved on the hollow plunger and is located in the liquid storage chamber, wherein the two ends of the first spring are respectively against the bottom end of the hollow plunger and the bottom wall of the liquid storage chamber, wherein the top end of the hollow plunger passes through the screw cover, wherein the liquid discharge nozzle is connected to the hollow plunger, wherein the characteristics are as follows: The liquid discharge mechanism also includes a back-suction device and a driving device. The back-suction device includes a fixing frame screwed to the outside of the screw cover, a pressure cover inserted on the fixing frame, a latex ball arranged between the pressure cover and the fixing frame, and a liquid suction tube and a liquid return tube connected to the latex ball. The pressure cover is provided with a receiving cavity for placing the latex ball, a sliding groove is provided on the side wall of the fixing frame, a driving rod matched with the sliding groove is provided on the outer circumferential wall of the hollow plunger, the liquid discharge nozzle is arranged through the sliding groove and is located below the driving rod, a pressure rod matched with the sliding groove and corresponding to the driving rod is provided at the bottom of the pressure cover, and a pressure rod matched with the sliding groove and corresponding to the driving rod is provided on the outer circumferential wall of the pressure cover The limit opening corresponds to the liquid pipe, the pressure cover can be moved up and down relative to the fixed frame, the liquid pipe is connected to the liquid outlet nozzle, the screw cover and the top of the liquid guide tube are provided with a mounting hole for the return pipe to be connected to the liquid storage bottle, the liquid pipe and the return pipe are connected with a one-way valve, the one-way valve at the liquid pipe is reversely connected to the one-way valve at the return pipe, the driving device includes a shell that is snap-fitted with the fixed frame, a driving motor arranged in the shell, a driving shaft that is transmission-connected to the driving motor, a slider that is threadedly connected to the driving shaft, and a push rod that is fixedly connected to the slider, the bottom end of the push rod is against the top of the pressure cover, and the sensor is located on the side of the bottom end of the shell facing the liquid outlet nozzle.

2. The induction soap dispenser according to claim 1, characterized in that: A sensor is arranged in the slide groove below the driving rod.

3. The induction soap dispenser according to claim 1, characterized in that: The driving rods are symmetrically arranged in two groups relative to the central axis of the hollow plunger.

4. The induction soap dispenser according to claim 1, characterized in that: The liquid outlet nozzle comprises a straight tube connected to the hollow plunger and a bent tube connected to the straight tube. The bent tube is arranged to be inclined outward and downward relative to the straight tube, and the liquid suction tube is connected to the bent tube.

5. The induction soap dispenser according to claim 3, characterized in that: The top of the fixing frame is provided with a limiting groove, and the bottom of the pressure cover is provided with a limiting block matched with the limiting groove.

6. The induction soap dispenser according to claim 1, characterized in that: A blocking block is provided at the bottom of the hollow plunger, and a clamping groove for fixing the first spring is provided at the bottom of the blocking block.

7. The induction soap dispenser according to claim 6, characterized in that: A sealing groove is provided at the connection between the hollow plunger and the screw cover, a sealing gasket is provided in the sealing groove, and a sealing gland is provided on the sealing gasket.

8. The induction soap dispenser according to claim 7, characterized in that: A fixing column abutting against the sealing gland is arranged in the fixing frame, a positioning hole matched with the hollow plunger is opened at the bottom end of the fixing column, and an opening groove corresponding to the driving rod is opened on the outer circumferential wall of the fixing column.

9. The induction soap dispenser according to claim 1, characterized in that: The one-way valve comprises a valve body and a valve cover threadedly connected to the valve body. A valve cavity is arranged in the valve body. A second spring and a ball abutting against the second spring and adapted to seal with the inner end of the valve cover are arranged in the valve cavity.

10. The induction soap dispenser according to claim 1, characterized in that: A U-shaped observation port is provided on the side wall of the liquid storage bottle.

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