WO2023092461A1 - 泵体结构及泡沫泵 - Google Patents

泵体结构及泡沫泵 Download PDF

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Publication number
WO2023092461A1
WO2023092461A1 PCT/CN2021/133565 CN2021133565W WO2023092461A1 WO 2023092461 A1 WO2023092461 A1 WO 2023092461A1 CN 2021133565 W CN2021133565 W CN 2021133565W WO 2023092461 A1 WO2023092461 A1 WO 2023092461A1
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WO
WIPO (PCT)
Prior art keywords
air
liquid inlet
wall
cylinder
cavity
Prior art date
Application number
PCT/CN2021/133565
Other languages
English (en)
French (fr)
Inventor
邹剑文
杨文强
Original Assignee
佛山市长拓包装科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山市长拓包装科技有限公司 filed Critical 佛山市长拓包装科技有限公司
Priority to PCT/CN2021/133565 priority Critical patent/WO2023092461A1/zh
Priority to KR1020227038959A priority patent/KR102707103B1/ko
Priority to JP2022567890A priority patent/JP2024500192A/ja
Priority to DE112021002219.9T priority patent/DE112021002219T5/de
Priority to GB2216291.1A priority patent/GB2616933A/en
Publication of WO2023092461A1 publication Critical patent/WO2023092461A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1087—Combination of liquid and air pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1202—Dispensers for soap for liquid or pasty soap dispensing dosed volume
    • A47K5/1204—Dispensers for soap for liquid or pasty soap dispensing dosed volume by means of a rigid dispensing chamber and pistons
    • A47K5/1205—Dispensing from the top of the dispenser with a vertical piston
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/14—Foam or lather making devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/042—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube
    • B05B11/045—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube designed for spraying particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B05B7/0031—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material

Definitions

  • the invention relates to the field of foam pumps, in particular to a pump body structure and a foam pump.
  • the liquid storage container stores cleaning liquid such as hand sanitizer or facial cleanser.
  • the foam pump is installed on the liquid storage container.
  • the foam pump has a gas chamber and a liquid chamber.
  • the air in the chamber mixes with the liquid in the liquid chamber to form foam and spray it out.
  • the foam pump generally has an air return hole in the gas chamber that communicates with the inner cavity of the liquid storage container, and replenishes gas into the liquid storage container through the air return hole to balance the air pressure in the liquid storage container, and an elastic stop valve is set to block the return air hole to avoid The liquid flows back from the air return hole.
  • the liquid in the liquid storage container easily contacts and adheres to the surface of the elastic stop valve, and the liquid contacts the elastic stop valve for a long time, causing the elastic stop valve to harden and lose its ability to stop flow.
  • the purpose of the present invention is to provide a pump body structure and a foam pump to solve one or more technical problems in the prior art, and at least provide a beneficial option or create conditions.
  • a pump body structure comprising:
  • the air intake cylinder is provided with an air intake chamber inside, and the bottom of the air intake cylinder is provided with a return hole connecting the air intake chamber and the space below the air intake cylinder;
  • liquid inlet cylinder which is connected to the bottom of the air inlet cylinder
  • a lower cover which is connected to the bottom of the air inlet cylinder, a cavity is formed between the lower cover, the outer wall of the liquid inlet cylinder, and the bottom wall of the air inlet cylinder, and the lower cover and the liquid inlet There is a return air channel connecting the cavity and the space under the lower cover between the cylinders;
  • An elastic stop valve is arranged in the cavity, and the elastic stop valve is used to elastically cover the bottom of the air return hole.
  • the beneficial effect of the present invention is: the pump body structure is assembled to the foam pump and installed to the liquid storage container together, the liquid inlet cylinder is used to absorb the liquid in the liquid storage container, and the air return hole at the bottom of the air intake cylinder is used to communicate with the air intake chamber and the storage container.
  • the elastic stop valve is used to elastically cover the bottom of the air return hole to prevent the liquid in the liquid storage container from flowing backward from the air return hole into the air intake chamber; when the liquid in the liquid storage container is discharged through the liquid inlet cylinder, the storage
  • the air pressure in the liquid container decreases, because the air pressure in the air inlet chamber is greater than the air pressure in the liquid storage container, the gas in the air inlet cylinder squeezes the top of the elastic stop valve from the return hole and deforms downward, so that the elastic stop valve and the bottom of the return hole appear
  • the gap allows the gas to enter the cavity from the air return hole, and the gas in the cavity enters the liquid storage container through the air return channel to balance the air pressure of the liquid storage container; when the air pressure in the air inlet cavity and the liquid storage container is balanced, the elastic stop flow
  • the top of the valve returns to its original shape and covers the air return hole.
  • the lower cover is provided with an assembly hole penetrating up and down, the assembly hole is sleeved on the outside of the liquid inlet cylinder, the cavity surrounds the periphery of the liquid inlet cylinder, The air return channel is located between the inner wall of the assembly hole and the outer wall of the liquid inlet cylinder, the elastic stop valve is sleeved around the outside of the liquid inlet cylinder along the cavity, and the lower The top of the cover abuts against the elastic stop valve.
  • the assembly hole of the lower cover is sleeved on the outside of the liquid inlet cylinder, so that the lower cover, the outer wall of the liquid inlet cylinder, and the bottom wall of the air inlet cylinder form an annular cavity, and the elastic stop valve is sleeved on the inlet along the annular cavity.
  • the outside of the liquid cylinder connects the elastic stop valve and the liquid inlet cylinder together, and the top of the lower cover is used to abut against the elastic stop valve to prevent the elastic stop valve from loosening downward from the liquid inlet cylinder, so that the elastic stop valve can It is firmly installed on the outside of the liquid inlet cylinder.
  • the bottom surface of the air inlet cylinder is provided with an upwardly recessed cavity
  • the air return hole is located on the top wall of the cavity
  • the top of the liquid inlet cylinder is connected to the top of the cavity
  • the outer wall of the lower cover is in sealing connection with the inner wall of the cavity.
  • the air return hole is located in the concave cavity on the bottom surface of the air intake tube, the outer side wall of the lower cover is sealed and connected with the inner side wall of the concave cavity, and a relatively closed cavity is formed between the top wall of the concave cavity, the outer side wall of the liquid inlet tube, and the lower cover, and
  • the air return channel becomes the only channel connecting the cavity with the lower space.
  • the top wall of the concave cavity is provided with a first air guide groove communicating with the bottom of the air return hole, the first air guide groove extends to the liquid inlet cylinder, and the liquid inlet cylinder
  • the outer wall of the outer wall is provided with a second air guide groove extending in the up and down direction, the second air guide groove communicates with the first air guide groove, and the top of the elastic stop valve is elastically sealed between the air return hole and the air return hole.
  • the first air guide groove, the inner hole wall of the elastic stop valve elastically covers the second air guide groove.
  • the first air guide groove on the top wall of the concave cavity communicates with the second air guide groove on the outer wall of the liquid inlet cylinder, so that an air flow channel is formed between the air return hole, the first air guide groove, and the second air guide groove, and the elastic stop valve Elastically cover the air flow channel to prevent the liquid from flowing back into the air return hole from the air flow channel.
  • the gas in the intake cavity is first filled in the return air hole, the first air guide groove, and the second air return hole.
  • the second air guide groove pushes the corresponding position of the elastic stop valve, and then the gas squeezes the bottom of the elastic stop valve to expand outward and flow into the space below, which helps to reduce the air intake cylinder and the space below. Air pressure difference.
  • the elastic stop valve is divided into an upper part and a lower part, the upper part is elastically pressed between the inner side wall of the concave cavity and the outer side wall of the liquid inlet cylinder, and the upper part
  • the top wall of the upper part elastically covers the return air hole and the first air guide groove
  • the inner side wall of the upper part elastically covers the second air guide groove
  • the inner side wall of the lower part is attached to the inlet
  • the elastic check valve is divided into an upper part and a lower part.
  • the upper part is elastically pressed between the inner wall of the cavity and the outer wall of the liquid inlet cylinder, and the top of the lower cover is in contact with the bottom of the upper part, so that the upper part is firmly fixed to avoid
  • the upper part moves downward to ensure that the top wall of the upper part elastically covers the bottom of the return air hole and the bottom of the first air guide groove, the inner side wall of the upper part elastically covers the second air guide groove, and the inner side wall of the lower part fits on the inlet There is a gap between the outer wall of the liquid cylinder, the outer wall of the lower part and the lower cover, so that the lower part has a margin for outward expansion.
  • the gas hole, the first air guide groove, the second air guide groove, and then the gas expands the lower part outward, the gas flows into the cavity from the gap between the lower part and the outer wall of the liquid inlet cylinder, and the gas flows from the return air channel to the lower space.
  • the inner wall of the assembly hole is in sealing connection with the outer wall of the liquid inlet cylinder, and the inner wall of the assembly hole is provided with a groove penetrating in the up and down direction, and the groove is connected to the outer wall of the liquid inlet cylinder.
  • the air return channel is formed between the outer walls of the liquid inlet cylinder.
  • the inner wall of the lower cover assembly hole is sealed with the outer wall of the liquid inlet cylinder, and a return air channel is formed between the groove on the inner wall of the assembly hole and the outer wall of the liquid inlet cylinder, so that the liquid cannot pass through the inner wall of the assembly hole and the liquid inlet.
  • the gap between the outer walls of the cylinder penetrates into the cavity, ensuring that the return air channel is a single channel connecting the cavity and the space below.
  • the outer wall of the liquid inlet cylinder is provided with an annular protrusion, and the inner hole wall of the elastic stop valve abuts against the annular protrusion.
  • the annular protrusion on the outer wall of the liquid inlet cylinder is offset against the inner hole of the elastic stop valve, which helps to fix the elastic stop valve and prevents the elastic stop valve from being loosened from the liquid inlet cylinder.
  • a foam pump comprising:
  • the inside of the liquid inlet cylinder has a liquid inlet cavity, and the bottom of the liquid inlet cylinder is provided with a liquid inlet hole that communicates with the outside world;
  • the first piston assembly is arranged in the air intake chamber slidingly up and down, and the top of the first piston assembly is provided with a mixing chamber communicating with the upper space;
  • the second piston assembly the top of which is connected to the first piston assembly, the bottom of the second piston assembly is slidably arranged in the liquid inlet chamber, and the top of the first piston assembly communicates with the mixing chamber;
  • a foam generating mechanism which is arranged in the mixing chamber
  • a one-way valve the cover of which is arranged on the liquid inlet hole, and the flow direction of the one-way valve is from bottom to top.
  • the foam pump on the bottle mouth of the liquid storage container, press down the first piston assembly, the first piston assembly compresses the space of the intake chamber, and the second piston assembly compresses the space of the intake chamber, so that the gas in the intake chamber passes through the second
  • the first piston assembly is discharged into the mixing chamber, and the liquid in the liquid inlet chamber is discharged into the mixing chamber through the second piston assembly.
  • the foam is formed by the foam generating mechanism and then sprayed out; pull up the first piston assembly , the second piston assembly and the first piston assembly return to their original positions. Due to the reduction of the gas volume in the intake chamber, the air pressure in the intake chamber is lower than the external air pressure, and the external air enters the intake chamber through the first piston assembly.
  • the amount of liquid in the chamber decreases, so that the liquid in the liquid storage container flows into the liquid inlet chamber from bottom to top through the one-way valve through the liquid inlet hole, and the liquid amount in the liquid storage container decreases, so that the air pressure in the liquid storage container is lower than the outside world Air pressure, when the air pressure in the air intake cavity is balanced with the external air pressure, the air pressure in the air intake cavity is greater than the air pressure in the liquid storage container, and the air pressure deforms the top of the elastic stop valve downward, so that the top of the elastic stop valve and the air intake cylinder A gap is formed between the bottom walls of the air intake chamber, and the gas in the air intake chamber is replenished into the liquid storage container from the air return hole, so that the air pressure of the liquid storage container is balanced with the air pressure in the air intake chamber; the operation of the foam pump to generate foam is smoother and the foam The effect is better.
  • the foam pump also includes an upper cover, the upper cover is connected to the top of the air intake cylinder, and the bottom of the upper cover is provided with a mounting seat extending to the outside of the air intake cylinder, so
  • the installation base circles around the outer circumference of the air intake cylinder, an installation space is formed between the inner side wall of the installation base and the outer side wall of the air intake cylinder, and a sealing ring is provided on the top of the installation space.
  • the foam pump also includes an elastic member, the elastic member is a plastic spring, the elastic member is arranged in the air intake cavity, and the upper and lower ends of the elastic member are respectively abutted against The top of the second piston assembly and the bottom wall of the intake chamber.
  • the first piston assembly and the second piston assembly are automatically rebounded upward through the elastic member, making the use of the foam pump more convenient.
  • the elastic member is a plastic spring, and the foam pump as a whole is an all-plastic structure, so that the foam pump can be recovered as a whole without dismantling it separately. Unzip the elastic.
  • Fig. 1 is the pump body structure provided by the present invention, the exploded schematic view of an embodiment thereof;
  • Fig. 2 is a pump body structure provided by the present invention, a schematic cross-sectional view of an embodiment thereof;
  • Fig. 3 is the enlarged schematic diagram of A in Fig. 2;
  • Fig. 4 is the structure of the pump body provided by the present invention, a schematic cross-sectional view of an embodiment after decomposition
  • Fig. 5 is the structure of the pump body provided by the present invention, a schematic structural view of the air intake cylinder in one embodiment
  • Figure 6 is an enlarged schematic view of B in Figure 5;
  • Fig. 7 is a schematic cross-sectional view of an embodiment of the foam pump provided by the present invention.
  • Fig. 8 is a schematic exploded view of an embodiment of the foam pump provided by the present invention.
  • Fig. 9 is a schematic cross-sectional view of an exploded embodiment of the foam pump provided by the present invention.
  • orientation descriptions such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
  • the pump body structure of the present invention makes following embodiment:
  • the pump body structure includes an air inlet cylinder 100 , a liquid inlet cylinder 200 , an elastic stop valve 300 , and a lower cover 400 .
  • the air inlet cylinder 100 and the liquid inlet cylinder 200 are integrally injection-molded by plastic, and the liquid inlet cylinder 200 and the air inlet cylinder 100 are both in a cylindrical structure.
  • the outer diameter of the air inlet cylinder 100 is greater than that of the liquid inlet cylinder 200.
  • There is an upwardly recessed cavity 130 the top of the liquid inlet cylinder 200 is connected to the top wall of the cavity 130 , and the cavity 130 surrounds the outer circumference of the liquid inlet cylinder 200 to form a circle.
  • the inside of the air inlet cylinder 100 is provided with an air inlet chamber 110 extending up and down, and the inside of the liquid inlet cylinder 200 is provided with a liquid inlet chamber 220 extending up and down.
  • the top of the air inlet cylinder 100 is open, and the top of the liquid inlet chamber 220 is in contact with the The bottom of the air chamber 110 is connected.
  • the bottom of the liquid inlet cylinder 200 is provided with a liquid inlet hole 230 connecting the liquid inlet chamber 220 and the space below.
  • the outer wall of the liquid inlet cylinder 200 is provided with a second air guide groove 2001 extending in the vertical direction, and the top wall of the concave cavity 130 is provided with a first air guide groove 1301 , and one end of the first air guide groove 1301 is connected to the bottom of the air return hole 120 , and the other end extends to the liquid inlet cylinder 200 and communicates with the second air guiding groove 2001 .
  • the lower cover 400 is provided with an assembly hole 410 penetrating in the up and down direction.
  • the assembly hole 410 is a step hole with a large upper part and a smaller lower part.
  • the assembly hole 410 is set outside the liquid inlet cylinder 200.
  • the outer diameters of the cylinder 200 are matched, and the lower part of the assembly hole 410 is in interference fit with the liquid inlet cylinder 200 .
  • the shape of the outer side wall of the lower cover 400 matches the shape of the inner side wall of the annular step 1302 of the cavity 130, and the outer side wall of the lower cover 400 is sealed and connected with the inner side wall of the annular step 1302.
  • a cavity 401 is formed between the outer side wall of the cavity 130 and the top wall of the concave cavity 130, and the cavity 401 surrounds the outside of the liquid inlet cylinder 200 to form a circle.
  • the elastic stop valve 300 is in the shape of a ring.
  • the elastic stop valve 300 is arranged in the cavity 401.
  • the elastic stop valve 300 is surrounded and sleeved outside the liquid inlet cylinder 200 along the cavity 130.
  • the outer wall of the liquid inlet cylinder 200 An annular protrusion 210 is provided, and the wall of the inner hole of the elastic stop valve 300 is against the annular protrusion 210 .
  • the elastic stop valve 300 includes an upper part 301 and a lower part 302 distributed up and down. The thickness of the upper part 301 in the inner and outer direction is greater than the thickness of the lower part 302 in the inner and outer direction.
  • the inner wall covers the second air guiding groove 2001 , and the lower part 302 extends downward along the outer wall of the liquid inlet cylinder 200 . There is a gap between the upper part of the assembly hole 410 and the lower part 302, so that the lower part 302 has a margin for outward expansion and deformation.
  • the inner wall of the concave cavity 130 is provided with an annular step 1302, and the annular step 1302 expands outward so that the vertical cross-sectional shape of the concave cavity 130 is in the shape of a stepped hole with a small top and a large bottom, and the upper part 301 is elastically pressed against the inner wall of the concave cavity 130
  • the thickness of the inner and outer direction of 302 is so that after the gas flows downward through the return hole 120, the first air guide groove 1301, and the second air guide groove 2001, the gas pushes the lower part 302 to expand and deform outwardly, so that the gas can flow smoothly.
  • the top of the lower cover 400 abuts against the bottom of the upper part 301, so that the elastic stop valve 300 is protected between the lower cover 400 and the concave cavity 130, and the inner side wall of the assembly hole 410 is provided with a groove 411 penetrating in the vertical direction.
  • the groove 411 forms a return air channel 402 between the inner side wall of the assembly hole 410 and the outer side wall of the liquid inlet cylinder 200, and the return air channel 402 communicates with the cavity 401 and the space below, so that through the return air hole 120, the first air guide groove 1301 1.
  • the gas flowing downwards in the second gas guide groove 2001 can expand the lower part 302 , and then the gas flows downwards through the air return channel 402 .
  • the elastic stop valve 300 elastically blocks the bottom of the air return hole 120 is realized by the elastic recovery property of the elastic stop valve 300 itself;
  • the top of the elastic stop valve 300 is deformed downward, so that a gap occurs between the top of the elastic stop valve 300 and the bottom of the air return hole 120, so that the gas can flow downward from the gap into the cavity 401;
  • the air pressure above 120 is equal to the air pressure in the cavity 401
  • the top of the elastic stop valve 300 returns to its original shape and is blocked at the bottom of the air return hole 120 due to its own elastic recovery ability;
  • the air pressure above the air return hole 120 is less than
  • the gas in the cavity 401 squeezes the elastic stop valve 300 upwardly against the bottom of the air return hole 120 , so that the bottom of the air return hole 120 is blocked.
  • the bottom of the air intake cylinder 100 is a plane
  • the air return hole 120 penetrates the bottom of the air intake cylinder 100 in the vertical direction
  • the lower cover 400 is connected to the bottom of the air intake cylinder 100, the lower cover 400, the outer side wall of the liquid inlet cylinder 200,
  • a cavity 401 is formed between the bottom walls of the air inlet cylinder 100, and the elastic stop valve 300 is filled in the cavity 401, and there is a gap between the lower cover 400 and the liquid inlet cylinder 200, so that the elastic stop valve 300 can also be lowered.
  • Cover 400 is protected in cavity 401 .
  • foam pump of the present invention makes following embodiment:
  • the foam pump includes the above-mentioned pump body structure, a one-way valve 240 , a first piston assembly 500 , a second piston assembly 600 , a foam generating mechanism 700 , an elastic member 800 , an upper cover 900 , and a pressing head 950 .
  • the first piston assembly 500 is arranged in the air intake chamber 110 to slide up and down.
  • the top of the first piston assembly 500 is provided with a mixing chamber 510 and an air intake hole 520.
  • the mixing chamber 510 penetrates the middle of the first piston assembly 500 in the vertical direction, and the There are multiple air holes 520 , and all the air holes 520 are distributed on the periphery of the mixing chamber 510 at intervals.
  • the outer wall of the first piston assembly 500 is sealed with the inner wall of the air inlet chamber 110, the top of the second piston assembly 600 is connected to the bottom of the first piston assembly 500, and the bottom of the second piston assembly 600 is slidably arranged in the liquid inlet chamber.
  • the outer wall of the bottom of the second piston assembly 600 is sealed with the inner wall of the liquid inlet chamber 220 .
  • the middle part of the second piston assembly 600 is provided with a liquid outlet channel 610 penetrating in the vertical direction, the top of the liquid outlet channel 610 communicates with the mixing chamber 510 , and the bottom of the liquid outlet channel 610 communicates with the liquid inlet chamber 220 .
  • the one-way valve 240 is disposed in the liquid inlet cavity 220 , and the one-way valve 240 is covered on the top of the liquid inlet hole 230 , and the flow direction of the one-way valve 240 is from bottom to top.
  • the first piston assembly 500 also includes a first elastic valve plate 560 and a second elastic valve plate 570, the first elastic valve plate 560 is connected to the first piston assembly 500, the first elastic valve plate 560 is in the shape of a ring, the first elastic valve plate
  • the sheet 560 has an inner valve sheet 561 and an outer valve sheet 562 .
  • the inner valve plate 561 is covered on the bottom of the air flow channel, and when the inner valve plate 561 elastically returns to its original shape upward, the inner valve plate 561 opens the bottom of the air flow channel downward.
  • the outer valve piece 562 covers the air inlet 520 , and when the outer valve piece 562 elastically recovers upward, the outer valve piece 562 closes the air inlet 520 upward.
  • the second elastic valve piece 570 is in the shape of a ring, and the second elastic valve piece 570 is connected to the bottom wall of the air intake cavity 110.
  • the second elastic valve piece 570 is covered on the top of the air return hole 120, and the second elastic valve piece 570 is downward.
  • the second elastic valve plate 270 closes the top of the air return hole 120 downward.
  • the foam generating mechanism 700 includes a cylinder that penetrates up and down, an upper foam forming net, and a lower foam forming net.
  • the upper foam forming net and the lower foam forming net are respectively covered on the top and bottom of the cylinder.
  • the foam generating mechanism 700 is arranged in the mixing chamber. 510 top.
  • the elastic member 800 is a plastic spring.
  • the elastic member 800 is sheathed on the outside of the second piston assembly 600 .
  • the upper and lower ends of the elastic member 800 press against the top of the second piston assembly 600 and the bottom wall of the intake chamber 110 respectively.
  • the upper cover 900 is provided with a mounting hole penetrating up and down.
  • the shape of the mounting hole is directly opposite to the opening of the top of the intake cylinder 100.
  • the mixing chamber 510 of the first piston assembly 500 extends upward through the mounting hole.
  • the foam generating mechanism 700 is located at the center of the mounting hole. above.
  • the upper cover 900 is connected to the top of the intake cylinder 100, and the bottom of the upper cover 900 is provided with a mounting seat 910 extending to the outside of the intake cylinder 100.
  • the mounting seat 910 circles around the periphery of the intake cylinder 100, and the inner side wall of the mounting seat 910 is in line with the intake cylinder.
  • An installation space 920 is formed between the outer walls of the gas cylinder 100 , the sealing ring 930 is disposed on the top of the installation space 920 , and the inner wall of the installation seat 910 is provided with internal threads.
  • the pressing head 950 is connected to the top of the first piston assembly 500.
  • the pressing head 950 has a discharge channel 951 communicating with the mixing chamber 510.
  • the bottom of the pressing head 950 is limited in the installation hole of the upper cover 900.
  • the pressing head 950 can be installed along the The hole slides up and down.
  • the first piston assembly 500 drives the second piston assembly 600 to move downward, and the first piston assembly 500 compresses the air intake chamber 110
  • the second piston assembly 600 compresses the space in the liquid inlet chamber 220, so that the air pressure in the air inlet chamber 110 rises, the inner valve piece 561 of the first elastic valve piece 560 opens the airflow passage upwards, and the outer valve piece 562 closes the air inlet hole upwards 520, the second elastic valve plate 570 closes the top of the air return hole 120 downwards, the gas in the air inlet chamber 110 flows into the mixing chamber 510 through the air flow channel, and the air pressure in the liquid inlet chamber 220 rises, and the liquid in the liquid inlet chamber 220 passes through
  • the liquid outlet channel 610 flows upward into the mixing chamber 510 , so that the gas and liquid are mixed in the mixing chamber 510 to form foam through the foam generating mechanism 700 , and the foam is ejected from the
  • the elastic member 800 pushes the second piston assembly 600 and the first piston assembly 500 upward to return to their original positions. Since the amount of gas in the air inlet chamber 110 and the amount of liquid in the liquid inlet chamber 220 decrease, the air inlet chamber 110 When the air pressure is lower than the ambient air pressure, the inner valve plate 561 of the first elastic valve plate 560 closes the air flow channel downwards, the outer valve plate 562 opens the bottom of the air inlet hole 520 downwards, and the second elastic valve plate 570 opens the air return hole 120 upwards.
  • the outside air enters the air inlet chamber 110 from the air inlet 520; the amount of liquid in the liquid inlet chamber 220 decreases, so that the air pressure in the liquid inlet chamber 220 is lower than the air pressure in the liquid storage container, and the liquid in the liquid outlet container passes through the air inlet.
  • the liquid hole 230 and the one-way valve 240 flow into the liquid inlet chamber 220 from bottom to top, so that the air pressure in the liquid inlet chamber 220 is balanced with the external air pressure; as the liquid volume in the liquid storage container decreases, the air pressure in the liquid storage container is lower than that of the intake air chamber 110, and the second elastic valve plate 570 is in the state of opening the top of the air return hole 120 upwards, the gas in the air intake chamber 110 passes through the air return hole 120, the first air guide groove 1301, and the second air guide groove 2001 to push the elastic
  • the lower part 302 of the stop valve 300 is opened outwards, so that the gas can be replenished into the liquid storage container, and the air pressure of the liquid storage container can be balanced with the air inlet chamber 110 .
  • the bottle mouth of the liquid storage container is sealed by the upper cover 900, the sealing ring 930, and the air intake cylinder 100, and the second elastic valve plate 570 closes the top of the air return hole 120, elastically stopping the flow
  • the upper part 301 of the valve 300 blocks the air return hole 120, the first air guide groove 1301, and the second air guide groove 2001, and the liquid in the liquid inlet chamber 220 presses the check valve 240 downward, so that the check valve 240 is in a closed liquid inlet position.
  • the state of the hole 230, so that the liquid in the liquid storage container is sealed and preserved.
  • the elastic member 800 is not required, and the function of the foam pump can also be realized by manually pressing down the first piston assembly 500 or manually pulling up the first piston assembly 500 .
  • the elastic member 800 may be an elastic body that can return to its original shape after being compressed, such as a metal spring, elastic rubber, or elastic sponge.

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Abstract

一种泵体结构及一种包括该泵体结构的泡沫泵。泵体结构包括：进气筒（100），其内部设有进气腔（110），进气筒（100）的底部设有回气孔（120）；进液筒（200），其连接于进气筒（100）的底部；下盖（400），其连接于进气筒（100）的底部，下盖（400）、进液筒（200）的外侧壁、进气筒（100）的底壁之间围成空腔（401），下盖（400）与进液筒（200）之间留有回气通道（402）；弹性止流阀（300），其设置于空腔（401）中，弹性止流阀（300）用于弹性封盖回气孔（120）的底部。该泵体结构的弹性止流阀被保护在空腔中，可减少被液体长时间浸泡而硬化的风险。

Description

泵体结构及泡沫泵 技术领域
本发明涉及泡沫泵领域，特别涉及泵体结构及泡沫泵。
背景技术
储液容器储存有洗手液或洗面奶等清洁液体，泡沫泵安装于储液容器上，泡沫泵具有气体腔与液体腔，储液容器中的液体被吸入液体腔中，通过按压活塞将气体腔中的空气与液体腔中的液体混合后形成泡沫喷出。泡沫泵一般在气体腔中设有连通储液容器内腔的回气孔，通过回气孔向储液容器中补充气体以平衡储液容器中的气压，并且设置弹性止流阀封堵回气孔，避免液体从回气孔倒流。然而，当储液容器倾倒或摇晃时，储液容器中的液体容易接触并附着到弹性止流阀的表面，液体长时间接触弹性止流阀，造成弹性止流阀硬化并丧失止流能力。
发明内容
本发明目的在于提供一种泵体结构及泡沫泵，以解决现有技术中所存在的一个或多个技术问题，至少提供一种有益的选择或创造条件。
为解决上述技术问题所采用的技术方案：
一种泵体结构，包括：
进气筒，其内部设有进气腔，所述进气筒的底部设有连通所述进气腔与所述进气筒下方空间的回气孔；
进液筒，其连接于所述进气筒的底部；
下盖，其连接于所述进气筒的底部，所述下盖、所述进液筒的外侧壁、所述进气筒的底壁之间围成空腔，所述下盖与所述进液筒之间留有连通所述空腔与所述下盖下方空间的回气通道；
弹性止流阀，其设置于所述空腔中，所述弹性止流阀用于弹性封盖所述回气孔的底部。
本发明的有益效果是：泵体结构装配到泡沫泵并一起安装到储液容器，进液筒用 于吸取储液容器中的液体，而进气筒底部的回气孔用于连通进气腔与储液容器的内腔，弹性止流阀用于弹性覆盖回气孔底部，避免储液容器中的液体从回气孔倒流到进气腔中；当储液容器中的液体经进液筒排出后，储液容器中的气压降低，由于进气腔的气压大于储液容器的气压，进气筒的气体从回气孔挤压弹性止流阀的顶部向下变形，使弹性止流阀与回气孔的底部出现间隙，使气体从回气孔进入空腔中，空腔中的气体经回气通道进入储液容器中以平衡储液容器的气压；当进气腔与储液容器的气压平衡后，弹性止流阀的顶部回复原状并封盖回气孔，当储液容器倾倒或摇晃时，由于弹性止流阀被保护在空腔中，液体难以飞溅到弹性止流阀上，下盖阻挡大量飞溅的液体，若液体通过回气通道进入空腔中，由于空腔的体积较小，进入空腔中的液体量较少，降低液体与弹性止流阀的接触面积，从而减少弹性止流阀被液体浸泡的面积，减少弹性止流阀由于液体长时间浸泡而硬化的部位。
作为上述技术方案的进一步改进，所述下盖设有上下贯通的装配孔，所述装配孔套设于所述进液筒的外部，所述空腔围绕所述进液筒的外周一圈，所述回气通道位于所述装配孔的内壁与所述进液筒的外侧壁之间，所述弹性止流阀沿所述空腔环绕套设于所述进液筒的外部，所述下盖的顶部抵接于所述弹性止流阀。
下盖的装配孔套设于进液筒的外部，使下盖、进液筒的外侧壁、进气筒的底壁形成环形的空腔，弹性止流阀沿着环形的空腔套设于进液筒的外部，使得弹性止流阀与进液筒连接在一起，利用下盖的顶部抵接于弹性止流阀，避免弹性止流阀从进液筒向下松脱，使弹性止流阀能够稳固安装在进液筒的外部，当气体从回气孔挤压弹性止流阀的顶部时，弹性止流阀被下盖阻止而无法向下移动，确保弹性止流阀回复原状时能够封盖于回气孔的底部。
作为上述技术方案的进一步改进，所述进气筒的底面设有向上凹陷的凹腔，所述回气孔位于所述凹腔的顶壁，所述进液筒的顶部连接于所述凹腔的顶壁，所述下盖的外侧壁与所述凹腔的内侧壁密封连接。
回气孔位于进气筒底面的凹腔中，下盖的外侧壁与凹腔的内侧壁密封连接，凹腔的顶壁、进液筒的外侧壁、下盖之间形成较为封闭的空腔，且回气通道成为连通空腔与下方空间的唯一通道，当空腔中的气体经回气通道流向下方空间时，气体能够推动空腔中的气体从回气通道向下排出，有助于减少空腔中堆积的液体。
作为上述技术方案的进一步改进，所述凹腔的顶壁设有连通所述回气孔底部的第一导气槽，所述第一导气槽向所述进液筒延伸，所述进液筒的外侧壁设有沿上下方向延伸的第二导气槽，所述第二导气槽连通所述第一导气槽，所述弹性止流阀的顶部弹性封盖于所述回气孔与所述第一导气槽，所述弹性止流阀的内孔壁弹性封盖于所述第二导气槽。
凹腔顶壁的第一导气槽与进液筒外侧壁的第二导气槽连通，使回气孔、第一导气槽、第二导气槽之间形成气流通道，而弹性止流阀弹性封盖于该气流通道，避免液体从该气流通道倒流到回气孔中，当进气腔与下方空间出现气压差时，进气腔的气体先填充于回气孔、第一导气槽、第二导气槽中并推挤弹性止流阀的相应位置，随后气体再挤压弹性止流阀的底部向外扩张并流动到下方空间中，有助于减少进气筒与下方空间连通所需的气压差。
作为上述技术方案的进一步改进，所述弹性止流阀分为上部与下部，所述上部被弹性抵压于所述凹腔的内侧壁与所述进液筒的外侧壁之间，所述上部的顶壁弹性封盖于所述回气孔与所述第一导气槽，所述上部的内侧壁弹性封盖于所述第二导气槽，所述下部的内侧壁贴合于所述进液筒的外侧壁，所述下部的外侧壁与所述下盖之间留有间隙，所述下盖的顶部抵接于所述上部的底部。
弹性止流阀分为上部与下部，上部被弹性抵压于凹腔的内侧壁与进液筒的外侧壁之间，且下盖的顶部抵接于上部的底部，使上部被稳固固定，避免上部向下移动，保证上部的顶壁弹性封盖于回气孔的底部与第一导气槽的底部、上部的内侧壁弹性封盖于第二导气槽，而下部的内侧壁贴合于进液筒的外侧壁，下部的外侧壁与下盖之间留有间隙，使下部具有向外扩张的余量，当进气腔与下方空间出现气压差时，进气腔的气体先填充到回气孔、第一导气槽、第二导气槽，随后气体向外扩张下部，气体从下部与进液筒的外侧壁之间的间隙流动到空腔中，气体从回气通道流向下方空间。
作为上述技术方案的进一步改进，所述装配孔的内侧壁与所述进液筒的外侧壁密封连接，所述装配孔的内侧壁设有沿上下方向贯通的凹槽，所述凹槽与所述进液筒的外侧壁之间形成所述回气通道。
下盖装配孔的内侧壁与进液筒的外侧壁密封连接，装配孔内侧壁的凹槽与进液筒的外侧壁之间形成回气通道，使液体无法经过装配孔的内侧壁与进液筒的外侧壁之间 的间隙渗入空腔中，确保回气通道为连通空腔与下方空间的单一通道，当液体从回气通道进入空腔时，液体流入空腔需要流经回气通道、空腔中的气体流向下方空间需要流经回气通道，空腔中的气体有效地阻碍液体流入，大幅度减少液体流入空腔。
作为上述技术方案的进一步改进，所述进液筒的外侧壁设有环形凸起，所述弹性止流阀的内孔壁抵接于所述环形凸起。
进液筒外侧壁的环形凸起与弹性止流阀的内孔相抵，有助于固定弹性止流阀，避免弹性止流阀从进液筒松脱。
一种泡沫泵，包括：
如上述的泵体结构，所述进液筒的内部具有进液腔，所述进液筒的底部设有连通外界的进液孔；
第一活塞组件，其上下滑动地设置于所述进气腔中，所述第一活塞组件的顶部设有连通上方空间的混合腔；
第二活塞组件，其顶部连接所述第一活塞组件，所述第二活塞组件的底部上下滑动地设置于所述进液腔中，所述第一活塞组件的顶部连通所述混合腔；
泡沫发生机构，其设于所述混合腔中；
单向阀，其盖设于所述进液孔，所述单向阀的流通方向为从下到上。
将泡沫泵安装于储液容器的瓶口上，向下按压第一活塞组件，第一活塞组件压缩进气腔的空间、第二活塞组件压缩进液腔的空间，令进气腔的气体经第一活塞组件排入混合腔、进液腔的液体经第二活塞组件排入混合腔，气体与液体在混合腔中混合后经泡沫发生机构作用形成泡沫后喷出；向上拉起第一活塞组件，第二活塞组件及第一活塞组件回复原位，由于进气腔的气体量减少，使进气腔的气压低于外界气压，外界气体经第一活塞组件进入进气腔中，由于进液腔中的液体量减少，使储液容器中的液体从进液孔经单向阀从下往上流入进液腔中，储液容器中液体量减少，使储液容器中的气压低于外界气压，当进气腔中的气压与外界气压平衡后，进气腔的气压大于储液容器中的气压，气压令弹性止流阀的顶部向下变形，使弹性止流阀的顶部与进气筒的底壁之间形成间隙，则进气腔中的气体从回气孔补充到储液容器中，使储液容器的气压与进气腔的气压平衡；泡沫泵产生泡沫的运行动作更加流畅、泡沫产生效果较好。
作为上述技术方案的进一步改进，所述泡沫泵还包括上盖，所述上盖连接于所述 进气筒的顶部，所述上盖的底部设有向所述进气筒外部延伸的安装座，所述安装座沿所述进气筒的外周环绕一圈，所述安装座的内侧壁与所述进气筒的外侧壁之间形成安装空间，所述安装空间的顶部设有密封圈。
将泡沫泵安装于储液容器上，将进液筒及进气筒均插入储液容器的内腔中，上盖的安装座内侧壁与进气筒的外侧壁之间形成安装空间，储液容器的瓶口插入安装空间中，且瓶口的顶部抵压于密封圈，从而使得储液容器的瓶口、进气筒的外侧壁、安装座的内侧壁之间形成密封结构，当储液容器倾倒或摇晃时，避免储液容器内部的液体从瓶口溢出。
作为上述技术方案的进一步改进，所述泡沫泵还包括弹性件，所述弹性件为塑料弹簧，所述弹性件设于所述进气腔中，所述弹性件的上下两端分别抵接于所述第二活塞组件的顶部与所述进气腔的底壁。
通过弹性件使第一活塞组件及第二活塞组件向上自动回弹，使泡沫泵的使用更加便捷，弹性件为塑料弹簧，泡沫泵整体为全塑结构，使泡沫泵能够整体回收，无需单独拆解弹性件。
附图说明
下面结合附图和实施例对本发明做进一步的说明；
图1是本发明所提供的泵体结构，其一实施例的分解示意图；
图2是本发明所提供的泵体结构，其一实施例的剖视示意图；
图3是图2中A的放大示意图；
图4是本发明所提供的泵体结构，其一实施例分解后的剖视示意图；
图5是本发明所提供的泵体结构，其一实施例中进气筒的结构示意图；
图6是图5中B的放大示意图；
图7是本发明所提供的泡沫泵，其一实施例的剖视示意图；
图8是本发明所提供的泡沫泵，其一实施例的分解示意图；
图9是本发明所提供的泡沫泵，其一实施例分解后的剖视示意图。
100、进气筒，110、进气腔，120、回气孔，130、凹腔，1301、第一导气槽，1302、环形台阶，200、进液筒，2001、第二导气槽，210、环形凸起，220、进液腔，230、进液孔，240、单向阀，300、弹性止流阀，301、上部，302、下部，400、下盖，401、 空腔，402、回气通道，410、装配孔，411、凹槽，500、第一活塞组件，510、混合腔，520、进气孔，560、第一弹性阀片，561、内阀片，562、外阀片，570、第二弹性阀片，600、第二活塞组件，610、出液通道，700、泡沫发生机构，800、弹性件，900、上盖，910、安装座，920、安装空间，930、密封圈，950、按压头，951、喷出通道。
具体实施方式
本部分将详细描述本发明的具体实施例，本发明之较佳实施例在附图中示出，附图的作用在于用图形补充说明书文字部分的描述，使人能够直观地、形象地理解本发明的每个技术特征和整体技术方案，但其不能理解为对本发明保护范围的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，如果具有“若干”之类的词汇描述，其含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
参照图1至图5，本发明的泵体结构作出如下实施例：
泵体结构包括进气筒100、进液筒200、弹性止流阀300、下盖400。
进气筒100与进液筒200由塑料一体注塑成型，进液筒200与进气筒100均呈圆筒状结构，进气筒100的外径大于进液筒200的外径，进气筒100的底面设有向上凹陷的凹腔130，进液筒200的顶部连接于凹腔130的顶壁，凹腔130围绕进液筒200的外周环绕一圈成圆环状。
进气筒100的内部设有沿上下方向延伸的进气腔110、进液筒200的内部设有沿上下方向延伸的进液腔220，进气筒100的顶部敞开，进液腔220的顶部与进气腔110的底部连通，进液筒200的底部设有连通进液腔220与下方空间的进液孔230，凹腔130的顶壁设有连通进气腔110与下方空间的回气孔120。进液筒200的外侧壁设有沿上下 方向延伸的第二导气槽2001，凹腔130的顶壁设有第一导气槽1301，第一导气槽1301的一端连通回气孔120的底部、另一端向进液筒200延伸并连通第二导气槽2001。
下盖400设有沿上下方向贯通的装配孔410，装配孔410呈上大下小的台阶孔，装配孔410套设于进液筒200的外部，装配孔410下部分的孔径与进液筒200的外径相匹配，装配孔410的下部分与进液筒200过盈配合。下盖400的外侧壁形状与凹腔130的环形台阶1302内侧壁形状相匹配，下盖400的外侧壁与环形台阶1302的内侧壁之间密封连接，装配孔410的上部分、进液筒200的外侧壁、凹腔130的顶壁之间形成空腔401，空腔401环绕进液筒200的外部一圈成圆环状。
弹性止流阀300呈圆环状，弹性止流阀300设于空腔401中，弹性止流阀300沿着凹腔130环绕套设于进液筒200的外部，进液筒200的外侧壁设有环形凸起210，弹性止流阀300的内孔壁与环形凸起210相抵。弹性止流阀300包括上下分布的上部301与下部302，上部301内外方向的厚度大于下部302内外方向的厚度，上部301的顶部盖设于回气孔120及第一导气槽1301，上部301的内侧壁盖设于第二导气槽2001，下部302沿着进液筒200的外侧壁向下延伸。装配孔410上部分与下部302之间留有间隙，使下部302具有向外扩张变形的余量。
凹腔130的内侧壁设有环形台阶1302，环形台阶1302向外扩张使凹腔130的竖向截面形状呈上小下大的台阶孔状，上部301被弹性抵压于凹腔130的内侧壁与进液筒200的外侧壁之间，下部302的外侧壁与环形台阶1302的内侧壁之间留有间隙，使下部302能够向外扩张变形的余量，且上部301内外方向的厚度大于下部302内外方向的厚度，以便于气体经回气孔120、第一导气槽1301、第二导气槽2001向下流动后、气体推动下部302向外扩张变形，使气体能够顺利流动。
下盖400的顶部抵接于上部301的底部，使得弹性止流阀300被保护在下盖400与凹腔130之间，装配孔410的内侧壁上设有沿上下方向贯通的凹槽411，凹槽411使装配孔410的内侧壁与进液筒200的外侧壁之间形成回气通道402，回气通道402连通空腔401与下方空间，从而使得经回气孔120、第一导气槽1301、第二导气槽2001向下流动的气体能够撑开下部302、随后气体经回气通道402向下流动。
弹性止流阀300弹性封堵回气孔120底部是通过弹性止流阀300自身的弹性恢复性质实现的；当回气孔120上方的气压大于空腔401中的气压时，回气孔120的气体 挤压弹性止流阀300的顶部使其向下形变，令弹性止流阀300的顶部与回气孔120的底部之间出现间隙，使气体能够从该间隙向下流动到空腔401中；当回气孔120上方的气压等于空腔401中的气压时，弹性止流阀300由于自身弹性恢复能力，弹性止流阀300顶部回复原状并封堵于回气孔120的底部；当回气孔120上方的气压小于空腔401中的气压时，空腔401中的气体挤压弹性止流阀300向上贴紧回气孔120的底部，使回气孔120的底部被封堵。
在一些实施例中，进气筒100的底部为平面，回气孔120沿上下方向贯通进气筒100的底部，下盖400连接于进气筒100的底部，下盖400、进液筒200的外侧壁、进气筒100的底壁之间形成空腔401，弹性止流阀300被填充于空腔401中，下盖400与进液筒200之间留有间隙，亦可实现弹性止流阀300被下盖400保护在空腔401中。
参照图6至图8，本发明的泡沫泵作出如下实施例：
泡沫泵包括上述的泵体结构、单向阀240、第一活塞组件500、第二活塞组件600、泡沫发生机构700、弹性件800、上盖900、按压头950。
第一活塞组件500上下滑动地设置于进气腔110中，第一活塞组件500的顶部设有混合腔510与进气孔520，混合腔510沿上下方向贯通第一活塞组件500的中部，进气孔520有多个，所有进气孔520间隔分布于混合腔510的外围。第一活塞组件500的外侧壁与进气腔110的内侧壁密封，第二活塞组件600的顶部连接于第一活塞组件500的底部，第二活塞组件600的底部上下滑动地设置于进液腔220中，第二活塞组件600的底部外侧壁与进液腔220的内侧壁密封。第二活塞组件600的中部设有沿上下方向贯通的出液通道610，出液通道610的顶部连通混合腔510、出液通道610的底部连通进液腔220。单向阀240设置于进液腔220中，单向阀240盖设于进液孔230的顶部，单向阀240的流通方向为从下到上。
第二活塞组件600的顶部外侧壁与第一活塞组件500之间留有间隙形成气流通道，气流通道连通混合腔510。第一活塞组件500还包括第一弹性阀片560、第二弹性阀片570，第一弹性阀片560连接于第一活塞组件500，第一弹性阀片560呈圆环状，第一弹性阀片560具有内阀片561与外阀片562。内阀片561盖设于气流通道的底部，内阀片561向上弹性回复原状时，内阀片561向下打开气流通道的底部。外阀片562盖设于进气孔520，外阀片562向上弹性回复原状时，外阀片562向上闭合进气孔520。
第二弹性阀片570呈圆环状，第二弹性阀片570连接于进气腔110的底壁，第二弹性阀片570盖设于回气孔120的顶部，第二弹性阀片570向下弹性回复原状时，第二弹性阀片270向下闭合回气孔120的顶部。
泡沫发生机构700包括上下贯通的圆筒、上泡沫成型网、下泡沫成型网，上泡沫成型网与下泡沫成型网分别盖设于圆筒的顶端与底端，泡沫发生机构700设置于混合腔510的顶端。
弹性件800为塑料弹簧，弹性件800套设于第二活塞组件600的外部，弹性件800的上下两端分别抵压于第二活塞组件600的顶部与进气腔110的底壁。
上盖900设有上下贯通的安装孔，安装孔的形状与进气筒100顶部的敞口正对，第一活塞组件500的混合腔510穿过安装孔向上延伸，泡沫发生机构700位于安装孔的上方。上盖900连接于进气筒100的顶部，上盖900的底部设有向进气筒100外部延伸的安装座910，安装座910沿进气筒100的外周环绕一圈，安装座910的内侧壁与进气筒100的外侧壁之间形成安装空间920，密封圈930设置于安装空间920的顶部，安装座910的内侧壁设有内螺纹。
按压头950连接于第一活塞组件500的顶端，按压头950具有连通混合腔510的喷出通道951，按压头950的底部被限位于上盖900的安装孔中，按压头950可沿着安装孔上下滑动。
将泡沫泵安装于储液容器的瓶口，进液筒200及进气筒100插入储液容器中，进液孔230接触储液容器中的液体，进气筒100的底壁高于储液容器中的液面，储液容器的瓶口插入安装空间920中，瓶口的外螺纹与安装座910的内螺纹配合，且瓶口的顶部抵压于密封圈930，从而使得瓶口被密封。
使用泡沫泵时，按下按压头950，使按压头950推动第一活塞组件500向下移动，第一活塞组件500带动第二活塞组件600向下移动，第一活塞组件500压缩进气腔110的空间、第二活塞组件600压缩进液腔220的空间，令进气腔110的气压上升，第一弹性阀片560的内阀片561向上打开气流通道、外阀片562向上闭合进气孔520的底部，第二弹性阀片570向下闭合回气孔120的顶部，进气腔110的气体经气流通道流向混合腔510中，且进液腔220的气压上升，进液腔220的液体经出液通道610向上流动到混合腔510中，使气体与液体在混合腔510中混合后经过泡沫发生机构700形 成泡沫，泡沫从按压头950的喷出通道951喷出。
释放按压头950，弹性件800推动第二活塞组件600及第一活塞组件500向上回复原位，由于进气腔110的气体量减少、进液腔220的液体量减少，使进气腔110的气压低于外界气压，则第一弹性阀片560的内阀片561向下闭合气流通道、外阀片562向下打开进气孔520的底部，第二弹性阀片570向上打开回气孔120的顶部，外界气体从进气孔520进入进气腔110中；进液腔220的液体量减少，使得进液腔220的气压低于储液容器中的气压，则出液容器中的液体经进液孔230及单向阀240从下向上流入进液腔220中，使进液腔220的气压与外界气压平衡；由于储液容器中的液体量减少，则储液容器的气压低于进气腔110的气压，且第二弹性阀片570处于向上打开回气孔120顶部的状态，进气腔110中的气体经回气孔120、第一导气槽1301、第二导气槽2001后推动弹性止流阀300的下部302向外张开，从而使气体补充到储液容器中，令储液容器的气压与进气腔110平衡。
当泡沫泵及储液容器处于静置状态时，储液容器的瓶口被上盖900、密封圈930、进气筒100密封，而第二弹性阀片570闭合回气孔120的顶部，弹性止流阀300的上部301封堵回气孔120、第一导气槽1301、第二导气槽2001，进液腔220中的液体向下挤压单向阀240，使单向阀240处于封闭进液孔230的状态，从而使得储液容器中的液体被密封保存。
在一些实施例中，无需设置弹性件800，通过手动下压第一活塞组件500或者手动拉起第一活塞组件500亦可实现泡沫泵的功能。
在一些实施例中，弹性件800可以是金属弹簧、弹性橡胶、弹性海绵等压缩后能够回复原状的弹性体。
以上对本发明的较佳实施方式进行了具体说明，但本发明创造并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可作出种种的等同变型或替换，这些等同的变型或替换均包含在本申请权利要求所限定的范围内。

Claims (10)

  1. 一种泵体结构，其特征在于：包括：
    进气筒(100)，其内部设有进气腔(110)，所述进气筒(100)的底部设有连通所述进气腔(110)与所述进气筒(100)下方空间的回气孔(120)；
    进液筒(200)，其连接于所述进气筒(100)的底部；
    下盖(400)，其连接于所述进气筒(100)的底部，所述下盖(400)、所述进液筒(200)的外侧壁、所述进气筒(100)的底壁之间围成空腔(401)，所述下盖(400)与所述进液筒(200)之间留有连通所述空腔(401)与所述下盖(400)下方空间的回气通道(402)；
    弹性止流阀(300)，其设置于所述空腔(401)中，所述弹性止流阀(300)用于弹性封盖所述回气孔(120)的底部。
  2. 根据权利要求1所述的泵体结构，其特征在于：所述下盖(400)设有上下贯通的装配孔(410)，所述装配孔(410)套设于所述进液筒(200)的外部，所述空腔(401)围绕所述进液筒(200)的外周一圈，所述回气通道(402)位于所述装配孔(410)的内壁与所述进液筒(200)的外侧壁之间，所述弹性止流阀(300)沿所述空腔(401)环绕套设于所述进液筒(200)的外部，所述下盖(400)的顶部抵接于所述弹性止流阀(300)。
  3. 根据权利要求2所述的泵体结构，其特征在于：所述进气筒(100)的底面设有向上凹陷的凹腔(130)，所述回气孔(120)位于所述凹腔(130)的顶壁，所述进液筒(200)的顶部连接于所述凹腔(130)的顶壁，所述下盖(400)的外侧壁与所述凹腔(130)的内侧壁密封连接。
  4. 根据权利要求3所述的泵体结构，其特征在于：所述凹腔(130)的顶壁设有连通所述回气孔(120)底部的第一导气槽(1301)，所述第一导气槽(1301)向所述进液筒(200)延伸，所述进液筒(200)的外侧壁设有沿上下方向延伸的第二导气槽(2001)，所述第二导气槽(2001)连通所述第一导气槽(1301)，所述弹性止流阀(300)的顶部弹性封盖于所述回气孔(120)与所述第一导气槽(1301)，所述弹性止流阀(300)的内孔壁弹性封盖于所述第二导气槽(2001)。
  5. 根据权利要求4所述的泵体结构，其特征在于：所述弹性止流阀(300)分为上部 (301)与下部(302)，所述上部(301)被弹性抵压于所述凹腔(130)的内侧壁与所述进液筒(200)的外侧壁之间，所述上部(301)的顶壁弹性封盖于所述回气孔(120)与所述第一导气槽(1301)，所述上部(301)的内侧壁弹性封盖于所述第二导气槽(2001)，所述下部(302)的内侧壁贴合于所述进液筒(200)的外侧壁，所述下部(302)的外侧壁与所述下盖(400)之间留有间隙，所述下盖(400)的顶部抵接于所述上部(301)的底部。
  6. 根据权利要求2所述的泵体结构，其特征在于：所述装配孔(410)的内侧壁与所述进液筒(200)的外侧壁密封连接，所述装配孔(410)的内侧壁设有沿上下方向贯通的凹槽(411)，所述凹槽(411)与所述进液筒(200)的外侧壁之间形成所述回气通道(402)。
  7. 根据权利要求2所述的泵体结构，其特征在于：所述进液筒(200)的外侧壁设有环形凸起(210)，所述弹性止流阀(300)的内孔壁抵接于所述环形凸起(210)。
  8. 一种泡沫泵，其特征在于：包括：
    如权利要求1-7中任一项所述的泵体结构，所述进液筒(200)的内部具有进液腔(220)，所述进液筒(200)的底部设有连通外界的进液孔(230)；
    第一活塞组件(500)，其上下滑动地设置于所述进气腔(110)中，所述第一活塞组件(500)的顶部设有连通上方空间的混合腔(510)；
    第二活塞组件(600)，其顶部连接所述第一活塞组件(500)，所述第二活塞组件(600)的底部上下滑动地设置于所述进液腔(220)中，所述第一活塞组件(500)的顶部连通所述混合腔(510)；
    泡沫发生机构(700)，其设于所述混合腔(510)中；
    单向阀(240)，其盖设于所述进液孔(230)，所述单向阀(240)的流通方向为从下到上。
  9. 根据权利要求8所述的泡沫泵，其特征在于：所述泡沫泵还包括上盖(900)，所述上盖(900)连接于所述进气筒(100)的顶部，所述上盖(900)的底部设有向所述进气筒(100)外部延伸的安装座(910)，所述安装座(910)沿所述进气筒(100)的外周环绕一圈，所述安装座(910)的内侧壁与所述进气筒(100)的外侧壁之间形成安装空间(920)，所述安装空间(920)的顶部设有密封圈(930)。
  10. 根据权利要求8所述的泡沫泵，其特征在于：所述泡沫泵还包括弹性件(800)，所述弹性件(800)为塑料弹簧，所述弹性件(800)设于所述进气腔(110)中，所述弹性件(800)的上下两端分别抵接于所述第二活塞组件(600)的顶部与所述进气腔(110)的底壁。
PCT/CN2021/133565 2021-11-26 2021-11-26 泵体结构及泡沫泵 WO2023092461A1 (zh)

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JP2022567890A JP2024500192A (ja) 2021-11-26 2021-11-26 ポンプボディ構造及びフォームポンプ
DE112021002219.9T DE112021002219T5 (de) 2021-11-26 2021-11-26 Pumpenkörper und Schaumpumpe
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CN205574594U (zh) * 2016-04-14 2016-09-14 宁波圣捷喷雾泵有限公司 一种挤出式泡沫泵
CN108378744A (zh) * 2018-05-28 2018-08-10 张楚怡 一种挤压式泡沫泵
CN208799138U (zh) * 2018-05-28 2019-04-30 张楚怡 一种挤压式泡沫泵
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KR101869042B1 (ko) * 2017-11-28 2018-06-20 (주)연우 파우더 토출 용기

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EP1199105A1 (en) * 2001-07-17 2002-04-24 Guala Dispensing S.P.A. Foaming device
US20100111735A1 (en) * 2008-11-06 2010-05-06 Xufeng Tu Foam Pump
CN202624901U (zh) * 2012-03-08 2012-12-26 余姚晟祺塑业有限公司 泡沫泵
CN205574594U (zh) * 2016-04-14 2016-09-14 宁波圣捷喷雾泵有限公司 一种挤出式泡沫泵
CN108378744A (zh) * 2018-05-28 2018-08-10 张楚怡 一种挤压式泡沫泵
CN208799138U (zh) * 2018-05-28 2019-04-30 张楚怡 一种挤压式泡沫泵
CN213800996U (zh) * 2020-08-13 2021-07-27 佛山市瑞利包装科技有限公司 弹簧外置式泡沫泵

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