A press-type soap dispenser

Abstract

The present invention provides a pressing type soap dispenser, which comprises a liquid storage bottle and a pump head assembly. The pump head assembly includes a screw cap, a liquid guide pipe, a hollow plunger, a sealing ball, a first spring, a piston and a liquid outlet nozzle. A liquid storage cavity and a liquid inlet cavity are arranged up and down in the liquid guide pipe. The sealing ball is used for connecting or cutting off the liquid storage cavity and the liquid inlet cavity. The piston is sleeved on the hollow plunger and located in the liquid storage cavity. Two ends of the first spring respectively abut against the bottom end of the hollow plunger and the bottom wall of the liquid storage cavity. The top end of the hollow plunger penetrates through the screw cap. The liquid outlet nozzle is communicated with the hollow plunger. The soap dispenser further includes a back suction mechanism. The back suction mechanism includes a fixing frame screwed on the outside of the screw cap, a pressing cover inserted on the fixing frame, a latex ball arranged between the pressing cover and the fixing frame, and a liquid suction pipe and a liquid return pipe communicated with the latex ball. The present invention can prevent the soap liquid from flowing out of the liquid outlet nozzle after the user finishes using, thus saving the use of soap liquid and improving the cleanliness of the washbasin.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary ware products, and particularly relates to a press-type soap dispenser. Background Art

[0002] With the gradual improvement of people's living standards, soap dispensers have been increasingly used in restrooms; in existing foam soap dispensers, a liquid storage bottle is usually provided, and there are generally two ways to design the liquid storage bottle. One is that the bottle mouth is upward, and a straw extending into the bottle is used to extract soap liquid; the other is that a liquid outlet hole is provided at the bottom of the liquid storage bottle and is fixedly connected to the soap dispenser; however, when the first design is adopted, after the soap liquid is extracted, the soap liquid often remains in the liquid outlet nozzle, and the soap liquid is likely to flow out and drip on the washbasin, resulting in waste of soap liquid and making the washbasin dirty and messy, often requiring cleaning, which increases the workload. Summary of the Invention

[0003] Based on the above problems, the purpose of the present invention is to provide a press-type soap dispenser that can prevent soap liquid from flowing out of the liquid outlet nozzle after the user finishes using it.

[0004] In view of the above problems, the following technical solution is provided: A press-type soap dispenser, including a liquid storage bottle and a pump head assembly. The pump head assembly includes a screw cap, a liquid guide pipe, a hollow plunger, a sealing ball, a first spring, a piston, and a liquid outlet nozzle. The top end of the liquid guide pipe is engaged with the screw cap, the screw cap is screwed to the bottle mouth of the liquid storage bottle, a liquid storage cavity and a liquid inlet cavity are arranged up and down in the liquid guide pipe, the sealing ball is used to connect or cut off the liquid storage cavity and the liquid inlet cavity, the piston is sleeved on the hollow plunger and is located in the liquid storage cavity, both ends of the first spring respectively abut against the bottom end of the hollow plunger and the bottom wall of the liquid storage cavity, the top end of the hollow plunger penetrates through the screw cap, the liquid outlet nozzle is communicated with the hollow plunger, and a liquid suction mechanism is further included. The liquid suction mechanism includes a fixing frame screwed to the outside of the screw cap, a pressing cover inserted on the fixing frame, a latex ball arranged between the pressing cover and the fixing frame, and a liquid suction pipe and a liquid return pipe communicated with the latex ball. A containing cavity for placing the latex ball is arranged in the pressing cover, a sliding groove is opened on the side wall of the fixing frame, a driving rod adapted to the sliding groove is arranged on the outer circumferential wall of the hollow plunger, the liquid outlet nozzle passes through the sliding groove and is located below the driving rod, a pressing rod adapted to the sliding groove and corresponding to the driving rod is arranged at the bottom of the pressing cover, a limiting port corresponding to the liquid suction pipe and the liquid return pipe is opened on the outer circumferential wall of the pressing cover, the pressing cover can move up and down relative to the fixing frame, the liquid suction pipe is communicated with the liquid outlet nozzle, the liquid return pipe is communicated with the liquid storage bottle, one-way valves are connected to both the liquid suction pipe and the liquid return pipe, and the one-way valve at the liquid suction pipe and the one-way valve at the liquid return pipe are connected in the reverse direction.

[0005] In the above structure, by pressing the gland, the gland is displaced towards the fixing bracket, compressing the latex ball. The gas in the latex ball enters the liquid storage bottle through the one-way valve at the liquid return pipe. Continuing to press the gland, the pressing rod abuts against the driving rod, pushing the driving rod to displace downward, so that the hollow plunger displaces downward relative to the piston. The first spring is in a compressed state, and the sealing ball floats upward. The liquid storage cavity is communicated with the liquid inlet cavity. The soap liquid in the liquid storage bottle flows into the liquid storage cavity through the liquid inlet cavity, enters the inner cavity of the hollow plunger through the liquid inlet hole on the hollow plunger, and then flows out from the liquid outlet nozzle. When the gland is pressed down to the maximum stroke, the limiting plate on the hollow plunger abuts against the top of the piston; when the user releases the gland, the latex ball intakes air through the one-way valve at the liquid suction pipe and sucks the excess soap liquid in the liquid outlet nozzle into the latex ball, so as to avoid the remaining soap liquid in the liquid outlet nozzle from dripping on the washbasin. After the latex ball intakes air, it quickly resumes its original state and pushes the gland upward. The elastic force of the first spring pushes the hollow plunger upward to reset, so that the liquid storage cavity cannot be communicated with the inner cavity of the hollow plunger, and the sealing ball resets to cut off the communication between the liquid storage cavity and the liquid inlet cavity. By setting the back-suction mechanism, after the soap liquid in the liquid outlet nozzle is absorbed into the latex ball through the liquid suction pipe, it can flow through the liquid return pipe into the liquid storage bottle, thereby improving the utilization rate of the soap liquid, avoiding waste by dripping on the washbasin, making the washbasin cleaner, and reducing the workload. By pressing the latex ball, the air pressure in the liquid storage cavity increases, thereby increasing the flow rate of the soap liquid into the liquid inlet cavity, improving the liquid outlet efficiency of the present invention, and improving the reliability of the present invention. By setting the fixing bracket, it is convenient to fixedly support the latex ball and can cooperate with the gland to facilitate the up and down displacement of the gland, thereby improving the reliability of the present invention.

[0006] The present invention is further configured such that two sets of the driving rods are symmetrically arranged relative to the central axis of the hollow plunger.

[0007] Adopting the above structure can improve the stability when the pressing rod pushes the driving rod and the hollow plunger displaces, and improve the reliability of the present invention.

[0008] The present invention is further configured such that the liquid outlet nozzle includes a straight pipe communicated with the hollow plunger and a bent pipe connected to the straight pipe. The bent pipe is inclined outward and downward relative to the straight pipe, and the liquid suction pipe is communicated with the bent pipe.

[0009] In the above structure, by setting the bent pipe, it is convenient for the liquid to flow out, thereby improving the convenience of the present invention. By connecting the liquid suction pipe to the bent pipe, it is convenient for the soap liquid to flow out when the user uses the soap dispenser, and avoids the soap liquid from flowing out onto the washbasin when the user finishes using the soap dispenser, improving the reliability of the present invention.

[0010] The present invention is further configured such that a limiting groove is formed at the top of the fixing bracket, and a limiting block adapted to the limiting groove is provided at the bottom of the gland.

[0011] With the above structure, the positioning and installation of the gland and the fixing frame can be facilitated, and the up-and-down displacement of the gland relative to the fixing frame can be facilitated, thereby improving the reliability of the present invention.

[0012] The present invention is further configured such 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.

[0013] With the above structure, the stability of the first spring can be improved, thereby improving the reliability of the pump head assembly.

[0014] The present invention is further configured such that a sealing groove is provided at the connection between the hollow plunger and the screw cap, a sealing gasket is provided in the sealing groove, and a sealing gland is provided on the sealing gasket.

[0015] In the above structure, by providing the sealing gasket, the sealing performance between the hollow plunger and the screw cap can be improved, thereby improving the sealing performance of the present invention. By providing the sealing gland, the stability and reliability of the sealing gasket can be improved, thereby further improving the sealing performance of the present invention.

[0016] The present invention is further configured such that a fixing column that abuts against the sealing gland 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.

[0017] With the above structure, the stability of the hollow plunger during displacement can be improved, and the positioning and installation of the hollow plunger can be facilitated. Moreover, through the fixing column, the tightness of the sealing gasket can be further improved, and the reliability of the present invention is improved.

[0018] The present invention is further configured such that the one-way valve includes a valve body and a valve cap screwed to the valve body. A valve cavity is provided in the valve body, and a second spring and a sphere that abuts against the second spring and is adapted to be sealed with the inner end of the valve cap are provided in the valve cavity.

[0019] With the above structure, the redundant soap liquid in the liquid outlet nozzle can be easily sucked back into the liquid storage barrel, and the reliability of the present invention is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is a schematic cross-sectional structural diagram of the present invention.

[0022] Figure 3 is Figure 2 an enlarged structural view of part A in

[0023] Figure 4 is a schematic exploded structural diagram of the pump head assembly and the back suction mechanism in the present invention.

[0024] The meanings of the reference numerals in the figure are as follows: 1 - liquid storage bottle; 2 - pump head assembly; 21 - screw cap; 22 - liquid guide tube; 23 - hollow plunger; 24 - sealing ball; 25 - first spring; 26 - piston; 27 - liquid outlet nozzle; 221 - liquid storage cavity; 222 - liquid inlet cavity; 3 - back suction mechanism; 31 - fixing bracket; 32 - gland; 33 - latex ball; 34 - liquid suction tube; 35 - liquid return tube; 321 - accommodating cavity; 311 - sliding groove; 231 - driving rod; 322 - pressing rod; 323 - limiting port; 4 - one-way valve; 271 - straight tube; 272 - bent tube; 312 - limiting groove; 324 - limiting block; 232 - blocking block; 2321 - clamping groove; 233 - sealing groove; 5 - sealing gasket; 51 - sealing gland; 313 - fixing column; 3131 - positioning hole; 3132 - opening groove; 41 - valve body; 42 - valve cover; 411 - valve cavity; 6 - second spring; 7 - sphere. Specific embodiments

[0025] The following will further describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] As Figures 1 to 4A pressing soap dispenser shown in the figure includes a liquid storage bottle 1 and a pump head assembly 2. The pump head assembly 2 includes a screw cap 21, a liquid guide tube 22, a hollow plunger 23, a sealing ball 24, a first spring 25, a piston 26 and a liquid outlet nozzle 27. The top end of the liquid guide tube 22 is engaged with the screw cap 21, and the screw cap 21 is screwed to the bottle mouth of the liquid storage bottle 1. A liquid storage chamber 221 and a liquid inlet chamber 222 are arranged vertically in the liquid guide tube 22. The sealing ball 24 is used to connect or cut off the liquid storage chamber 221 and the liquid inlet chamber 222. The piston 26 is sleeved on the hollow plunger 23 and is located in the liquid storage chamber 221. Two ends of the first spring 25 respectively abut against the bottom end of the hollow plunger 23 and the bottom wall of the liquid storage chamber 221. The top end of the hollow plunger 23 penetrates through the screw cap 21. The liquid outlet nozzle 27 is communicated with the hollow plunger 23. It further includes a breathing mechanism 3. The breathing mechanism 3 includes a fixing frame 31 screwed to the outside of the screw cap 21, a pressing cover 32 inserted on the fixing frame 31, a latex ball 33 arranged between the pressing cover 32 and the fixing frame 31, and a liquid suction tube 34 and a liquid return tube 35 communicated with the latex ball 33. A containing cavity 321 for placing the latex ball 33 is arranged in the pressing cover 32. A sliding groove 311 is formed on the side wall of the fixing frame 31. A driving rod 231 adapted to the sliding groove 311 is arranged on the outer circumferential wall of the hollow plunger 23. The liquid outlet nozzle 27 passes through the sliding groove 311 and is located below the driving rod 231. A pressing rod 322 adapted to the sliding groove 311 and corresponding to the driving rod 231 is arranged at the bottom of the pressing cover 32. A limiting port 323 corresponding to the liquid suction tube 34 and the liquid return tube 35 is formed on the outer circumferential wall of the pressing cover 32. The pressing cover 32 can be displaced up and down relative to the fixing frame 31. The liquid suction tube 34 is communicated with the liquid outlet nozzle 27, and the liquid return tube 35 is communicated with the liquid storage bottle 1. One-way valves 4 are connected to both the liquid suction tube 34 and the liquid return tube 35. The one-way valve 4 at the liquid suction tube 34 and the one-way valve 4 at the liquid return tube 35 are connected in the reverse direction.

[0027] In the above structure, by pressing the gland 32, the gland 32 is displaced towards the fixing frame 31, compressing the latex ball 33. The gas in the latex ball 33 enters the liquid storage bottle 1 through the one-way valve 4 at the liquid return pipe 35. Continuing to press the gland 32, the pressing rod 322 abuts against the driving rod 231, pushing the driving rod 231 to displace downward, so that the hollow plunger 23 displaces downward relative to the piston 26. The first spring 25 is in a compressed state, and the sealing ball 24 floats upward. The liquid storage chamber 221 is communicated with the liquid inlet chamber 222. After the soap solution in the liquid storage bottle 1 flows into the liquid storage chamber 221 through the liquid inlet chamber 222, it enters the inner cavity of the hollow plunger 23 through the liquid inlet hole on the hollow plunger 23 and then flows out from the liquid outlet nozzle 27. When the gland 32 is pressed down to the maximum stroke, the limiting plate on the hollow plunger 23 abuts against the top of the piston 26; when the user releases the gland 32, the latex ball 33 intakes air through the one-way valve 4 at the liquid suction pipe 34 and sucks the excess soap solution in the liquid outlet nozzle 27 into the latex ball 33, so as to avoid the remaining soap solution in the liquid outlet nozzle 27 from dripping on the washbasin. After the latex ball 33 intakes air, it quickly resumes its original state and pushes the gland 32 upward. The elastic force of the first spring 25 pushes the hollow plunger 23 upward to reset, so that the liquid storage chamber 221 cannot be communicated with the inner cavity of the hollow plunger 23, and the sealing ball 24 resets, cutting off the communication between the liquid storage chamber 221 and the liquid inlet chamber 222. By setting the breathing mechanism 3, after the soap solution in the liquid outlet nozzle 27 is absorbed into the latex ball 33 through the liquid suction pipe 34, it can flow through the liquid return pipe 35 into the liquid storage bottle 1, thereby improving the utilization rate of the soap solution, avoiding waste by dripping on the washbasin, making the washbasin cleaner, and reducing the workload. By pressing the latex ball 33, the air pressure in the liquid storage chamber 221 is increased, thereby increasing the flow rate of the soap solution into the liquid inlet chamber 222, improving the liquid outlet efficiency of the present invention, and improving the reliability of the present invention. By setting the fixing frame 31, it is convenient to fixedly support the latex ball 33 and can cooperate with the gland 32 to facilitate the up and down displacement of the gland 32, thereby improving the reliability of the present invention.

[0028] In this embodiment, two groups of driving rods 231 are symmetrically arranged relative to the central axis of the hollow plunger 23.

[0029] Adopting the above structure can improve the stability when the pressing rod 322 pushes the driving rod 231 and the hollow plunger 23 displaces, and improve the reliability of the present invention.

[0030] In this embodiment, the liquid outlet nozzle 27 includes a straight pipe 271 communicated with the hollow plunger 23 and a bent pipe 272 connected to the straight pipe 271. The bent pipe 272 is inclined outward and downward relative to the straight pipe 271, and the liquid suction pipe 34 is communicated with the bent pipe 272.

[0031] In the above structure, the liquid outlet is facilitated by arranging the elbow pipe 272, thereby improving the convenience of the present invention. By connecting the liquid suction pipe 34 with the elbow pipe 272, the outflow of the soap liquid is facilitated when the user uses the soap dispenser, and the outflow of the soap liquid onto the washbasin is avoided when the user finishes using the soap dispenser, improving the reliability of the present invention.

[0032] In this embodiment, a limit groove 312 is formed at the top of the fixing frame 31, and a limit block 324 adapted to the limit groove 312 is provided at the bottom of the gland 32.

[0033] With the above structure, the positioning and installation of the gland 32 and the fixing frame 31 are facilitated, and the up and down displacement of the gland 32 relative to the fixing frame 31 is facilitated, thereby improving the reliability of the present invention.

[0034] In this embodiment, a blocking block 232 is provided at the bottom of the hollow plunger 23, and a clamping groove 2321 for fixing the first spring 25 is formed at the bottom of the blocking block 232.

[0035] With the above structure, the stability of the first spring 25 can be improved, thereby improving the reliability of the pump head assembly 2.

[0036] In this embodiment, a sealing groove 233 is provided at the connection between the hollow plunger 23 and the screw cap 21. A sealing gasket 233 is arranged in the sealing groove 233, and a sealing gland 5132 is arranged on the sealing gasket 233.

[0037] In the above structure, the sealing performance between the hollow plunger 23 and the screw cap 21 can be improved by arranging the sealing gasket 233, thereby improving the sealing performance of the present invention. By arranging the sealing gland 5132, the stability and reliability of the sealing gasket 233 can be improved, thereby further improving the sealing performance of the present invention.

[0038] In this embodiment, a fixing column 313 abutted against the sealing gland 5132 is arranged in the fixing frame 31. A positioning hole 3131 adapted to the hollow plunger 23 is formed at the bottom end of the fixing column 313, and an opening groove 3132 corresponding to the driving rod 231 is formed on the outer circumferential wall of the fixing column 313.

[0039] With the above structure, the stability of the hollow plunger 23 during displacement can be improved, and the positioning and installation of the hollow plunger 23 are facilitated. Moreover, the tightness of the sealing gasket 233 can be further improved through the fixing column 313, improving the reliability of the present invention.

[0040] In this embodiment, the one-way valve 4 includes a valve body 41 and a valve cap 42 screwed to the valve body 41. A valve cavity 411 is arranged in the valve body 41. A second spring 6 and a sphere 7 abutted against the second spring 6 and adapted to be hermetically sealed with the inner end of the valve cap 42 are arranged in the valve cavity 411.

[0041] With the above structure, it is convenient for the excess soap liquid in the liquid outlet nozzle 27 to be sucked back into the liquid storage bucket, improving the reliability of the present invention.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pressing type soap dispenser, comprising a liquid storage bottle and a pump head assembly. The pump head assembly includes a screw cap, a liquid guide tube, a hollow plunger, a sealing ball, a first spring, a piston and a liquid outlet nozzle. The top end of the liquid guide tube is engaged with the screw cap, and the screw cap is screwed to the bottle mouth of the liquid storage bottle. A liquid storage cavity and a liquid inlet cavity are arranged up and down in the liquid guide tube. The sealing ball is used for connecting or cutting off the liquid storage cavity and the liquid inlet cavity. The piston is sleeved on the hollow plunger and is located in the liquid storage cavity. Two ends of the first spring respectively abut against the bottom end of the hollow plunger and the bottom wall of the liquid storage cavity. The top end of the hollow plunger penetrates through the screw cap, and the liquid outlet nozzle is communicated with the hollow plunger. It is characterized in that: It further includes a back suction mechanism, which includes a fixing frame screwed to the outside of the screw cap, a gland inserted on the fixing frame, a latex ball provided between the gland and the fixing frame, and a liquid suction pipe and a liquid return pipe connected to the latex ball. A receiving cavity for placing the latex ball is provided inside the gland. A chute is opened on the side wall of the fixing frame. A driving rod adapted to the chute is provided on the outer circumferential wall of the hollow plunger. The liquid outlet nozzle passes through the chute and is located below the driving rod. A pressing rod adapted to the chute and corresponding to the driving rod is provided at the bottom of the gland. Limiting ports corresponding to the liquid suction pipe and the liquid return pipe are opened on the outer circumferential wall of the gland. The gland can move up and down relative to the fixing frame. The liquid suction pipe is communicated with the liquid outlet nozzle, and the liquid return pipe is communicated with the liquid storage bottle. One-way valves are connected to both the liquid suction pipe and the liquid return pipe, and the one-way valve at the liquid suction pipe and the one-way valve at the liquid return pipe are connected in the reverse direction.

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

3. The pressing soap dispenser according to claim 1, characterized in that: The liquid outlet nozzle includes a straight pipe communicated with the hollow plunger and a bent pipe connected to the straight pipe. The bent pipe is inclined outward and downward relative to the straight pipe, and the liquid suction pipe is communicated with the bent pipe.

4. The pressing soap dispenser according to claim 2, characterized in that: A limiting groove is opened at the top of the fixing frame, and a limiting block adapted to the limiting groove is provided at the bottom of the gland.

5. The pressing type 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 opened at the bottom of the blocking block.

6. The pressing soap dispenser according to claim 5, characterized in that: A sealing groove is provided at the connection between the hollow plunger and the screw cap. A sealing gasket is provided in the sealing groove, and a sealing gland is provided on the sealing gasket.

7. The pressing soap dispenser according to claim 6, wherein: A fixing column abutted against the sealing gland is provided inside the fixing frame. A positioning hole adapted to 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.

8. The pressing soap dispenser according to claim 1, characterized in that: The one-way valve includes a valve body and a valve cap screwed to the valve body. A valve cavity is provided inside the valve body. A second spring and a sphere abutted against the second spring and hermetically adapted to the inner end of the valve cap are provided in the valve cavity.

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