High-integration simplified foam pump

Abstract

The utility model belongs to the field of foam pumps, and discloses a high-integration simplified foam pump which is installed on a preset container. The foam pump is composed of seven core parts including the elastic body, the pump core, the pressing head, the pump core valve seat, the two one-way valves and the filter screen, the parts with the highest integration degree are the integrated elastic body and the pump core respectively, the elastic body is preferably a spring barrel, and the elastic body has the reset function, the one-way valve function and the gas storage function; the pump core has a one-way valve function, a piston liquid sucking and pressing function and a bottle inside and outside air pressure balancing function; the pressing head has a self-locking function, so that the pump head can pass a negative pressure test, and the leakage problem cannot occur in the transportation process; meanwhile, the air storage cavity is designed on the preset container, so that the foam pump can be matched with a smaller bottle opening, the number of parts of the pump body is small, assembly is easy, mold investment is small, the all-plastic pump is beneficial to recycling, and the foam pump has the obvious advantages of protecting the environment and reducing the using amount of plastic.

Description

Technical Field

[0001] This utility model belongs to the field of foam pumps, specifically relating to a highly integrated simplified foam pump. Background Technology

[0002] Foam pumps are common packaging accessories primarily used in personal care and cleaning products to allow users to dispense liquids and create foam. To use, the user simply presses the pump head, and the liquid is expelled through the nozzle, mixing with air to form foam. This reduces the amount of liquid used because the foam form can cover a larger area. It also improves the user experience, making the product gentler and easier to apply.

[0003] Currently, there are many types of foam pumps on the market. All foam pumps contain elastic parts, and most of these elastic parts are metal or plastic springs to facilitate recycling.

[0004] However, each foam pump currently has a relatively large number of parts, with no fewer than nine parts and sometimes even more than ten parts, which is uneconomical in terms of mold costs, assembly costs, and material usage. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a highly integrated simplified foam pump. Through the high integration of its parts, the foam pump achieves a small number of parts (only 7), making assembly simple and reducing material usage and investment costs. In addition, the unique design of this foam pump can also be adapted to smaller bottle openings.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A highly integrated simplified foam pump is disclosed, wherein the foam pump is mounted on a predetermined container having a container opening and a container bottom, with the direction from the container opening to the container bottom defined as the depth direction. The foam pump includes a pressing head and a pump core valve seat, wherein the pressing head is clearance-fitted onto the pump core valve seat along the depth direction, and the interior of the pressing head and the interior of the pump core valve seat form an installation chamber.

[0008] It also includes,

[0009] An elastomer is installed in the mounting chamber along the depth direction and contacts both the pressing head and the pump core valve seat.

[0010] The pump core is installed in the mounting chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively, and the elastic body is sleeved on the pump core;

[0011] The pressing head includes,

[0012] The liquid outlet section has a liquid outlet chamber inside, which is connected to the mounting chamber. A filter screen is installed in the liquid outlet chamber, and the other end is open along the end of the pressing head.

[0013] The foam pump further includes a first check valve and a second check valve. The first check valve is mounted on the elastomer, and the airflow direction is from the outside of the pressing head through the inside of the pressing head to the inside of the elastomer. The second check valve is mounted on the pump core valve seat, and the liquid flow direction is from the predetermined bottle opening to the pump core valve seat.

[0014] Preferably, the elastomer has an internal air storage cavity, and the pump core is inserted into the air storage cavity.

[0015] Preferably, the pressing head includes,

[0016] The pressing part has a pressing chamber inside, and the pressing chamber is connected to the liquid outlet chamber;

[0017] The pump core valve seat is inserted into the pressing chamber along the depth direction;

[0018] The pressing chamber is fitted with the elastic body, and the interior of the pressing chamber is connected to the interior of the elastic body.

[0019] Furthermore, the filter screen is fixedly installed in the liquid outlet chamber, so that the filter screen is fixedly assembled on the press head as a whole.

[0020] Preferably, the interior of the pressing chamber is provided with,

[0021] The press-fit connector extends along the depth direction.

[0022] The upper surface of the elastomer is provided with a mating groove along the depth direction, the pressing connector mates with the mating groove, and the inner sidewall of the pressing chamber mates with and communicates with the interior of the elastomer.

[0023] Preferably, the pump core valve seat has,

[0024] The pump core valve seat has,

[0025] The pump core valve seat first mounting part is inserted into the pressing chamber in the opposite direction to the depth direction, and the mounting chamber is formed by the interior of the pump core valve seat first mounting part communicating with the pressing chamber.

[0026] The lower end of the elastomer along the depth direction mates with the interior of the first mounting portion of the pump core valve seat;

[0027] The pump fluid section extends along the depth direction, and its interior communicates with the interior of the first mounting portion of the pump core valve seat.

[0028] The pump core is installed sequentially in the opposite direction of the depth direction inside the pump liquid section, inside the first mounting part of the pump core valve seat, and in the pressing chamber, and the inside of the pump liquid section, the inside of the pump core, and the pressing chamber are connected in sequence.

[0029] Furthermore, the interior of the first mounting portion of the pump core valve seat has,

[0030] The pump core valve seat first mounting part inner cavity, and after the pressing head is sleeved on the pump core valve seat, the mounting chamber is formed by the connection between the pump core valve seat first mounting part inner cavity and the pressing chamber;

[0031] The interior of the pump fluid section forms a pump fluid section cavity, which is connected to the cavity of the first mounting part of the pump core valve seat.

[0032] The pump core is installed sequentially in the pump liquid section cavity, the pump core valve seat first mounting section cavity, and the pressing chamber in the opposite direction of the depth direction, and the pump core has a pump core chamber inside. The pump liquid section cavity, the pump core chamber, and the pressing chamber are connected in sequence.

[0033] Preferably, the pump core has,

[0034] The pump core piston is disposed on the lower surface of the pump core along the depth direction and cooperates with the pump liquid part; the pump core chamber is open on the pump core piston along the depth direction.

[0035] An upper vent valve is located on the pump core and cooperates with the elastic body;

[0036] The upper liquid outlet valve is located on the upper surface of the pump core along the depth direction and cooperates with the pressing chamber, and is located above the upper air outlet valve.

[0037] Furthermore, the pump core piston has a first skirt surface that extends and expands along the depth direction, the first skirt surface of the pump core piston is continuously closed, and the first skirt surface of the pump core piston cooperates with the pump liquid part;

[0038] The upper air outlet valve has an upper air outlet valve skirt that extends and expands in the opposite direction to the depth direction. The upper air outlet valve skirt is continuously closed. The elastic body has an elastic body contact portion that cooperates with the air outlet valve skirt surface.

[0039] The upper outlet valve has an upper outlet valve skirt that extends and expands in the opposite direction to the depth direction. The upper outlet valve skirt is continuously closed. The pressing chamber has a pressing chamber first mating part. The upper outlet valve skirt mates with the pressing chamber first mating part.

[0040] Preferably, the pump core piston also has a second skirt surface that extends and expands in the opposite direction to the depth direction, the second skirt surface of the pump core piston is continuously closed, and the second skirt surface of the pump core piston cooperates with the pumping part.

[0041] Furthermore, the first skirt and the second skirt of the pump core piston are connected along the depth direction by a sleeve. The sleeve is fitted onto the pump core, and a channel is formed between the sleeve and the pump core. An air inlet is opened at the bottom of the sleeve and the bottom of the channel. A vent hole is opened on the pump core valve seat, and the air inlet of the sleeve corresponds to the vent hole of the pump core valve seat.

[0042] Preferably, the pressing chamber has a second mating part, which extends and is open along the depth direction. The pump core also has a pump core sealing skirt, which expands in the opposite direction of the depth direction and mates with the second mating part of the pressing chamber to seal the opening of the second mating part of the pressing chamber.

[0043] Furthermore, the pump core chamber is open at the second mating part of the pressing chamber and is located below the first mating part of the pressing chamber, and is sealed by the upper liquid outlet valve.

[0044] Preferably, the pump core valve seat further comprises,

[0045] The second mounting part of the pump core valve seat is located below the first mounting part of the pump core valve seat along the depth direction and cooperates with the container opening.

[0046] Compared with the prior art, the beneficial effects of this utility model are:

[0047] 1. In this utility model, the foam pump is installed on a predetermined container, which has a container opening and a container bottom. The direction from the container opening to the container bottom is taken as the depth direction. The foam pump includes a pressing head and a pump core valve seat. The pressing head is movably sleeved on the pump core valve seat along the depth direction, and the interior of the pressing head and the interior of the pump core valve seat form an installation chamber. The pump core is installed in the installation chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively. The pump core is installed in the installation chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively, and the elastic body is sleeved on the pump core. The pressing head includes a liquid outlet section, which has a liquid outlet chamber inside. The liquid outlet chamber is connected to the installation chamber, and a filter screen is installed in the liquid outlet chamber. The other end is open along the end of the pressing head. The foam pump also includes a first one-way valve and a second one-way valve. The first one-way valve is installed on the elastic body, and the airflow direction is from the outside of the pressing head through the inside of the pressing head to the inside of the elastic body. The second one-way valve is installed on the... The pump core valve seat is located on the pump core, and the liquid flow direction is from the predetermined bottle opening to the pump core valve seat. Therefore, this foam pump consists of seven core components: an elastomer, a pump core, a pressing head, a pump core valve seat, two one-way valves, and a filter screen. The most integrated components are the elastomer and the pump core. The elastomer is preferably a spring cylinder, as it has a spring cylinder reset function, a one-way valve function, and integrates a gas storage function. The pump core has a one-way valve function, a piston suction and pressure function, and a function to balance the internal and external gas pressure of the bottle. The pressing head has a self-locking function, allowing the pump head to pass a negative pressure test and preventing leakage during transportation. Simultaneously, the gas storage chamber is designed outside the predetermined container and located above the predetermined container in the opposite direction of the depth direction, allowing this foam pump to adapt to smaller bottle openings. The pump body has few parts, is easy to assemble, requires less mold investment, and the all-plastic pump is also conducive to recycling, offering significant advantages for environmental protection and reducing plastic usage.

[0048] 2. Because the pressing head in this utility model includes a pressing part, which has a pressing chamber inside, and the pressing chamber is connected to the liquid outlet chamber; the pump core valve seat is inserted into the pressing chamber along the depth direction; the pressing chamber cooperates with the elastic body, and the inside of the pressing chamber is connected to the inside of the elastic body. The purpose of the elastic body is preferably a spring cylinder, because it has the function of spring cylinder reset. The gas inside the elastic body can enter the pressing chamber, so the elastic body has the function of a one-way valve. In addition, the inside of the elastic body has the function of storing gas.

[0049] 3. Because the pump core valve seat in this utility model has a first mounting part for the pump core valve seat, which is inserted into the pressing chamber in the opposite direction of the depth direction, and the mounting chamber is formed by the connection between the interior of the first mounting part for the pump core valve seat and the pressing chamber, the lower end of the elastic body in the depth direction cooperates with the interior of the first mounting part for the pump core valve seat; the pump liquid part extends in the depth direction, and the interior of the pump liquid part is connected to the interior of the first mounting part for the pump core valve seat, and the pump core is installed in the interior of the pump liquid part, the interior of the first mounting part for the pump core valve seat and the pressing chamber in the opposite direction of the depth direction, and the interior of the pump liquid part, the interior of the pump core and the pressing chamber are connected in sequence. The purpose is to enable the pump core valve seat to be installed with the pressing head through the first mounting part for the pump core valve seat, and also to fix the elastic body in the mounting chamber, and to install the pump core in the above structure. The above device achieves the advantages of simple installation and few parts. Attached Figure Description

[0050] Figure 1 This is a cross-sectional view of the internal structure of the foam pump in this utility model;

[0051] Figure 2 This is a schematic diagram illustrating the working principle of the upper liquid outlet valve and the upper air outlet valve inside the foam pump of this utility model.

[0052] Figure 3 This is a schematic diagram showing the state of the buckle on the press head being locked in the pump core valve seat in this utility model, which is also a schematic diagram of the state of the air storage chamber in the elastic body when the press head is pressed.

[0053] Figure 4 This is a flowchart illustrating the principle of air replenishment by a foam pump for a predetermined container in this invention, where arrows indicate sequence.

[0054] Figure 5 This is a schematic diagram showing the positions of the ventilation gap and ventilation chamber on the press head in this utility model, that is, a schematic diagram showing the positions of the ventilation chamber and ventilation gap relative to the first one-way valve.

[0055] Figure 6 This is a schematic diagram of the gas-liquid flow direction in this utility model. In the diagram, the red arrow indicates the liquid flow direction, the blue arrow indicates the gas flow direction from the gas storage chamber into the pressing chamber, the yellow arrow indicates the gas flow direction from outside the foam pump into the gas storage chamber, and the white arrow indicates the gas flow direction from the gas storage chamber into the predetermined container.

[0056] In the diagram: Pressing head 1; Pressing part 11; Pressing chamber 111; Pressing connector 1111; First mating part of pressing chamber 1112; Second mating part of pressing chamber 1113; Vent chamber 112; Vent gap 1121; Liquid outlet 12; Liquid outlet chamber 121; Buckle 13; Liquid-gas mixing through hole 14; Pump core 2; Pump core chamber 21; Upper liquid outlet valve 22; Upper liquid outlet valve skirt 221; Pump core piston 23; First skirt of pump core piston 231; Second skirt of pump core piston 232; Sleeve 233; Channel 234; Upper vent valve 24; Upper Air outlet valve skirt 241; pump core sealing skirt 25; pump core valve seat 3; pump core valve seat first mounting part 31; pump core valve seat first mounting part inner cavity 311; pump core valve seat second mounting part 32; pump core valve seat second mounting part inner cavity 321; pump core valve seat second mounting part inner cavity skirt 322; pump liquid part 33; pump liquid part inner cavity 331; elastomer 4; air storage cavity 41; elastomer contact part 42; first one-way valve 51; second one-way valve 52; predetermined container 6; container opening 61; sleeve air inlet 7; pump core valve seat vent 8; suction pipe 9; filter screen 10. Detailed Implementation

[0057] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments are described in detail with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0058] like Figure 1-6 As shown, a highly integrated simplified foam pump is installed on a predetermined container 6. The predetermined container 6 has a container opening 61 and a container bottom. The direction from the container opening 61 to the container bottom is defined as the depth direction D. The foam pump includes a pressing head 1 and a pump core valve seat 3. The pressing head 1 is fitted onto the pump core valve seat 3 with a clearance along the depth direction D. Specifically, the pressing head 1 is provided with a snap 34, and the pump core valve seat 3 has a locking position. By snapping the snap 34 onto the locking position, the pressing head 1 can be fixed onto the pump core valve seat 3. For this purpose, the pressing head 1 has a self-locking function, that is, after the pressing head 1 is fully pressed and reset on the pump core valve seat 3, it can self-lock. Furthermore, the interior of the pressing head 1 and the interior of the pump core valve seat 3 form an installation chamber.

[0059] The elastomer 4 is installed in the mounting chamber along the depth direction D and contacts both the pressing head 1 and the pump core valve seat 3.

[0060] Pump core 2 is installed in the mounting chamber along the depth direction D and contacts the pressing head 1 and the pump core valve seat 3 respectively, and the elastic body 4 is sleeved on the pump core 2; specifically, the elastic body 4 has an air storage chamber 41 inside, and the pump core 2 is inserted into the air storage chamber 41.

[0061] The press head 1 includes,

[0062] The pressing part 11 has a pressing chamber 111 inside.

[0063] The liquid outlet section 12 has a liquid outlet chamber 121 inside, one end of which is connected to the pressing chamber 111, and the other end is open along the end of the pressing head 1. A filter screen 10 is installed in the liquid outlet chamber 121. It should be noted that the filter screen 10 is fixedly installed in the liquid outlet chamber 121, so that the filter screen 10 is fixedly assembled on the pressing head 1 as a whole.

[0064] The pump core valve seat 3 is inserted into the pressing chamber 111 along the depth direction D;

[0065] The pressing chamber 111 is engaged with the elastic body 4, and the interior of the pressing chamber 111 is connected to the interior of the elastic body 4. Specifically, the pressing chamber 111 is provided with a pressing connector 1111, which extends along the depth direction D. The upper surface of the elastic body 4 is provided with a mating groove along the depth direction D. The pressing connector 1111 is engaged with the mating groove. The inner sidewall of the pressing chamber 111 is engaged with the elastic body 4.

[0066] The foam pump also includes a first one-way valve 51 and a second one-way valve 52. The first one-way valve 51 is installed on the elastic body 4. Specifically, the first one-way valve 51 is installed between the elastic body 4 and the pressing head 1, and the pressing head 1 and the pump core valve seat 3 are in clearance fit. The pressing chamber 1 has a venting chamber 112, and the side wall of the venting chamber 112 has a venting gap 1121. The venting gap 1121 is connected to the gap between the pressing chamber 111 and the pump core valve seat 3. The venting chamber 112 corresponds to the first one-way valve 51. Therefore, the first one-way valve 52... The valve 51 is used to block or allow the gas between the pressing chamber 111 and the gas storage chamber 41, and the airflow direction is from the outside of the pressing head 1 through the inside of the pressing head 1 to the inside of the elastic body 4. The second check valve 52 is installed on the pump core valve seat 3. Specifically, the second check valve 52 is installed on the pump liquid section 33 and is used to block or allow the liquid between the inner cavity 331 of the pump liquid section and the suction tube 9 (it should be noted that the suction tube is installed at the container opening 61 and extends into the predetermined container 6 along the depth direction D), and the liquid flow direction is from the predetermined container 6 to the pump core valve seat 3.

[0067] The pump core valve seat 3 has,

[0068] The first mounting part 31 of the pump core valve seat is inserted into the pressing chamber 111 in the opposite direction of the depth direction D. The mounting chamber is formed by the connection between the interior of the first mounting part 31 of the pump core valve seat and the pressing chamber 111. Specifically, the interior of the first mounting part 31 of the pump core valve seat has an inner cavity 311. After the pressing head 1 is sleeved on the pump core valve seat 3, the mounting chamber is formed by the connection between the inner cavity 311 of the first mounting part of the pump core valve seat and the pressing chamber 111.

[0069] The lower end of the elastic body 4 along the depth direction D mates with the interior of the first mounting part 31 of the pump core valve seat, specifically: the lower end of the elastic body 4 along the depth direction D mates with the side wall of the inner cavity 311 of the first mounting part of the pump core valve seat.

[0070] The second mounting portion 32 of the pump core valve seat is located below the first mounting portion 31 of the pump core valve seat along the depth direction D and cooperates with the container opening portion 61. Specifically, the second mounting portion 32 of the pump core valve seat has an inner cavity 321, which extends and is open along the depth direction D. The container opening portion 61 is inserted into the inner cavity 321 of the pump core valve seat through the open portion of the inner cavity 321 in the opposite direction of the depth direction D and is threadedly engaged with the inner cavity 321. More specifically, the pump... The inner cavity of the second mounting cavity 321 of the core valve seat is provided with a skirt 322. The skirt 322 extends along the depth direction D and is concentric with the second mounting portion 32 of the core valve seat. The side wall of the skirt 322 is provided with an internal thread, while the container opening 61 is provided with an external thread. The internal thread and the external thread are screwed together to connect the predetermined container 6 with the skirt 322. A gap is formed between the skirt 322 and the second mounting cavity 321 of the core valve seat.

[0071] The pumping section 33 extends along the depth direction D, and its interior communicates with the interior of the first mounting section 31 of the pump core valve seat. Specifically, the pumping section 33 extends along the depth direction D, and its interior forms a pumping section cavity 331, which communicates with the inner cavity 311 of the first mounting section of the pump core valve seat.

[0072] The pump core 2 is installed sequentially in the pump liquid section 33, the pump core valve seat first mounting part 31, and the pressing chamber 111 along the opposite direction of the depth direction D. The pump liquid section 33, the pump core 2, and the pressing chamber 111 are connected in sequence. Specifically, the pump core 2 is installed sequentially in the pump liquid section cavity 331, the pump core valve seat first mounting part 311, and the pressing chamber 111 along the opposite direction of the depth direction D. The pump core 2 has a pump core chamber 21 inside, and the pump liquid section cavity 331, the pump core chamber 21, and the pressing chamber 111 are connected in sequence.

[0073] Pump core 2 has,

[0074] The pump piston 23 is disposed on the lower surface of the pump core 2 along the depth direction D and cooperates with the pump liquid section 33. The pump core chamber 21 is open on the pump piston 23 along the depth direction D. Specifically, the pump piston 23 has a first skirt 231 that extends and expands along the depth direction D. The first skirt 231 continuously closes and seals the pump liquid section 33, and the first skirt 231 is interference-fitted with the pump liquid section 33. The pump piston 23 also has a second skirt 232 that extends and expands in the opposite direction of the depth direction D. The two skirts 232 are continuously closed and seal the pump liquid part 33, and the second skirt 232 of the pump core piston is interference-fitted with the pump liquid part 33; specifically, the first skirt 231 and the second skirt 232 of the pump core piston are connected along the depth direction D through a sleeve 233. The sleeve 233 is sleeved on the pump core 2, and a channel 234 is formed between the sleeve 233 and the pump core 2. The bottom of the channel 234 and the sleeve 233 is provided with a sleeve air inlet 7. The pump core valve seat 3 is provided with a pump core valve seat vent 8, and the sleeve air inlet 7 corresponds to the pump core valve seat vent 8.

[0075] The upper air outlet valve 24 is provided on the pump core 2 and cooperates with the elastic body 4. Specifically, the upper air outlet valve 24 has an upper air outlet valve skirt 241 that extends and expands in the opposite direction of the volume depth direction D. The upper air outlet valve skirt 241 is continuously closed. The elastic body 4 has an elastic body contact portion 42, and the elastic body contact portion 42 is interference-fitted with the upper air outlet valve skirt 241.

[0076] The upper outlet valve 22 is disposed on the upper surface of the pump core 2 along the depth direction D and is interference-fitted with the pressing chamber 111. Specifically, the upper outlet valve 22 has an upper outlet valve skirt 221 that extends and expands in the opposite direction of the depth direction D. The upper outlet valve skirt 221 is continuously closed. The pressing chamber 111 has a pressing chamber first mating part 1112, and the upper outlet valve skirt 221 mates with the pressing chamber first mating part 1112.

[0077] The pressing chamber 111 has a second mating part 1113, which extends and opens along the depth direction D. The pump core 2 also has a pump core sealing skirt 25, which expands in the opposite direction of the depth direction D and is interference-fitted with the second mating part 1113 to seal the opening of the second mating part 1113. Specifically, the pump core chamber 21 is open at the position of the second mating part 1113 and is located below the first mating part 1112 of the pressing chamber, and is sealed by the upper liquid outlet valve 22.

[0078] It should be noted that the pressing connector 1111, the first mating part 1112 of the pressing chamber, and the second mating part 1113 of the pressing chamber are all cylindrical and are arranged concentrically. The three cylindrical pressing connectors 1111, the first mating part 1112 of the pressing chamber, and the second mating part 1113 of the pressing chamber share a common liquid-gas mixing through hole 14. The pressing connector 1111 is located on the outermost side, and the first mating part 1112 of the pressing chamber is located on the innermost side. The lengths of the three parts along the depth direction D are decreasing sequentially from pressing connector 1111 to pressing part 1113 to pressing part 1112.

[0079] Using the above scheme, pump core 2 acts as a pump core piston to draw liquid in on the one hand, and as an upper valve to control the one-way flow of liquid on the other.

[0080] The elastomer 4, preferably a spring cylinder in this embodiment, serves two purposes: storing gas and acting as a spring-loaded pressing head 1.

[0081] The pressure exerted on each component of this invention is analyzed as follows:

[0082] 1. Gas chamber pressure analysis:

[0083] When pressed, the pressing head 1 moves downwards. Because the frictional force F2 between the first skirt surface 231 of the pump core piston and the inner cavity 331 of the pump fluid section is greater than the frictional force F1 between the upper air valve skirt edge 241 and the contact portion 42 of the elastic body, the pump core 2 does not immediately move downwards due to the distance between the end of the pump core 2 extending in the opposite direction of the depth D and the inner top of the pressing chamber 111. At this time, under the action of the pressing force, the pressing head 1 and the top surface of the spring cylinder will move downwards, and the pressing head 1 and the top surface of the spring cylinder will... When the pump core 2 moves relative to each other, the upper liquid outlet valve 22 and the upper air outlet valve 24 open together. The upper liquid outlet valve skirt 221 opens the opening of the first mating part 1112 of the pressing chamber along the depth direction D, and the upper air outlet valve skirt 241 opens the opening of the elastic body contact part 42 along the depth direction D. When the pressure continues to be pressed down, the elastic body is compressed, and the internal pressure P1 of the air storage chamber 41 will increase. The first one-way valve 51 is a one-way valve, which can only allow air to enter but not exit. In order to balance the pressure inside and outside the air storage chamber 41, the gas will be continuously squeezed out from the upper air outlet valve 24.

[0084] Upon rebound, the pressing head 1 moves in the opposite direction of the depth direction D under the reset action of the elastic body 4, i.e., the spring cylinder. Similarly, since the frictional force F2 between the first skirt surface 231 of the pump core piston and the inner cavity 331 of the pump liquid part is greater than the frictional force F1 between the upper air outlet valve skirt 241 and the contact part 42 of the elastic body, when the pressing head rebounds first, the pump core 2 remains stationary, and the upper air outlet valve skirt 241 is closed to seal it. The elastic body 4, i.e., the spring cylinder, continues to move in the opposite direction of the depth direction D, and the pressure P1 of the air storage chamber 41 decreases. The first one-way valve 51 opens, and in order to balance the air pressure in the air storage chamber 41, external gas flows through... The gas flows through the gap between the pressing head 1 and the pump core valve seat 3, and then through the venting gap 1121 into the venting chamber 112. The air pressure in the venting chamber 112 is higher than the air pressure inside the air storage chamber 41, which causes the first one-way valve 51 to enter the air storage chamber 41. After one cycle, the gas flow direction is as follows: the gas flows through the gap between the pressing head 1 and the pump core valve seat 3, and then through the venting gap 1121 into the venting chamber 112. The air pressure in the venting chamber 112 is higher than the air pressure inside the air storage chamber 41, which causes the first one-way valve 51 to enter the air storage chamber 41. Then, when the air outlet valve skirt 241 is opened, the gas enters the pressing chamber 111.

[0085] 2. Liquid cavity pressure analysis:

[0086] During the first press, the pressing head 1 moves downwards. Because the frictional force F2 between the first skirt 231 of the pump core piston and the inner cavity 331 of the pump liquid section is greater than the frictional force F1 between the upper vent valve skirt 241 and the contact part 42 of the elastic body, the pump core 2 remains stationary while the pressing head 1 moves relative to the pump core 2. The upper vent valve 24 opens. Upon continued pressing, the internal pressure in the pump core chamber 21 increases. The second one-way valve 52 is a one-way valve, allowing liquid to enter but not exit. To balance the air pressure inside and outside the liquid storage chamber, gas will continuously be squeezed out from the upper vent valve 24. Upon rebound, again because the frictional force F2 between the first skirt 231 of the pump core piston and the inner cavity 331 of the pump liquid section is greater than the frictional force F1 between the upper vent valve skirt 241 and the contact part 42 of the elastic body, the pressing head 1 rebounds first. With pump core 2 stationary and upper air valve 24 closed, elastic body 4 continues to rebound, reducing the pressure in pump liquid chamber 331. This causes the second one-way valve 52 to open. To balance the pressure in pump liquid chamber 331, the suction tube draws liquid from a predetermined container into pump liquid chamber 331. After resetting, pressing continues, and the air in pump liquid chamber 331 is continuously expelled. Once the gas in pump liquid chamber 331 is completely expelled, pressing again will release liquid. The liquid flows through suction tube 9 and the second one-way valve 52, then through pump core chamber 21 and pump core sealing skirt 25 to the pressing chamber 111, where it mixes with the gas in the pressing chamber 111. Then, it passes through the filter screen 10 in the liquid outlet chamber 121, forming foam as the liquid and gas pass through the filter screen 10.

[0087] Meanwhile, as the liquid in the predetermined container 6 decreases, the predetermined container 6 will have negative pressure, which will cause the predetermined container 6 to be crushed. The newly designed foam pump has a brand-new ventilation structure between the pump core piston 23 and the pump core valve seat 3. This structure has ventilation holes designed on the pump core piston 23 and the pump core valve seat 3 respectively. (During ventilation, the gas enters the sleeve air inlet hole 7 from the air storage chamber 41 through the channel 234. When the pump core 2 moves along the depth direction D until the sleeve air inlet hole 7 connects with the pump core valve seat vent hole 8, the gas enters the predetermined container 6 until the internal chamber of the predetermined container 6 is consistent with the external atmospheric pressure). Ventilation can only be achieved when the two holes are connected. Before pressing, the two holes are not connected. After pressing a certain distance, the two holes connect and ventilation is performed once. If you continue to press, the ventilation hole is blocked again. When the spring cylinder rebounds, the ventilation hole will also connect once. This ventilation structure performs ventilation twice for each press and rebound. This new, highly integrated, simplified pump has all the functions of current foam pumps, but it also boasts advantages such as simple structure, low investment, low plastic usage, and easy recycling due to its all-plastic design.

[0088] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A highly integrated simplified foam pump, wherein the foam pump is mounted on a predetermined container, the predetermined container having a container opening and a container bottom, the direction from the container opening to the container bottom being defined as the depth direction, the foam pump comprising a pressing head and a pump core valve seat, the pressing head being clearance-fitted onto the pump core valve seat along the depth direction, and the interior of the pressing head and the interior of the pump core valve seat forming an installation chamber, characterized in that, include, An elastomer is installed in the mounting chamber along the depth direction and contacts both the pressing head and the pump core valve seat. The pump core is installed in the mounting chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively, and the elastic body is sleeved on the pump core; The pressing head includes, The liquid outlet section has a liquid outlet chamber inside, which is connected to the mounting chamber. A filter screen is installed in the liquid outlet chamber, and the other end is open along the end of the pressing head. The foam pump further includes a first check valve and a second check valve. The first check valve is mounted on the elastomer, and the airflow direction is from the outside of the pressing head through the inside of the pressing head to the inside of the elastomer. The second check valve is mounted on the pump core valve seat, and the liquid flow direction is from the predetermined bottle opening to the pump core valve seat.

2. The highly integrated simplified foam pump according to claim 1, characterized in that: The pressing head includes, The pressing part has a pressing chamber inside, and the pressing chamber is connected to the liquid outlet chamber; The pump core valve seat is inserted into the pressing chamber along the depth direction; The pressing chamber is fitted with the elastic body, and the interior of the pressing chamber is connected to the interior of the elastic body.

3. A highly integrated simplified foam pump according to claim 2, characterized in that: The pump core valve seat has, The pump core valve seat first mounting part is inserted into the pressing chamber in the opposite direction to the depth direction, and the mounting chamber is formed by the interior of the pump core valve seat first mounting part communicating with the pressing chamber. The lower end of the elastomer along the depth direction mates with the interior of the first mounting portion of the pump core valve seat; The pump fluid section extends along the depth direction, and its interior communicates with the interior of the first mounting portion of the pump core valve seat. The pump core is installed sequentially in the opposite direction of the depth direction inside the pump liquid section, inside the first mounting part of the pump core valve seat, and in the pressing chamber, and the inside of the pump liquid section, the inside of the pump core, and the pressing chamber are connected in sequence.

4. A highly integrated simplified foam pump according to claim 3, characterized in that: The pump core has, The pump core piston is disposed on the lower surface of the pump core along the depth direction and cooperates with the pump liquid part. The interior of the pump core is open on the pump core piston along the depth direction. An upper vent valve is located on the pump core and cooperates with the elastic body; The upper liquid outlet valve is located on the upper surface of the pump core along the depth direction and cooperates with the pressing chamber, and is located above the upper air outlet valve.

5. A highly integrated simplified foam pump according to claim 4, characterized in that: The pump core piston has a first skirt surface that extends and expands along the depth direction. The first skirt surface of the pump core piston is continuously closed and cooperates with the pump liquid section. The upper air outlet valve has an upper air outlet valve skirt that extends and expands in the opposite direction to the depth direction. The upper air outlet valve skirt is continuously closed. The elastic body has an elastic body contact portion that cooperates with the air outlet valve skirt surface. The upper outlet valve has an upper outlet valve skirt that extends and expands in the opposite direction to the depth direction. The upper outlet valve skirt is continuously closed. The pressing chamber has a pressing chamber first mating part. The upper outlet valve skirt mates with the pressing chamber first mating part.

6. A highly integrated simplified foam pump according to claim 5, characterized in that: The pump core piston also has a second skirt that extends and expands in the opposite direction to the depth direction. The second skirt is continuously closed and cooperates with the pump liquid part.

7. A highly integrated simplified foam pump according to claim 6, characterized in that: The first skirt and the second skirt of the pump core piston are connected along the depth direction by a sleeve. The sleeve is fitted onto the pump core, and a channel is formed between the sleeve and the pump core. An air inlet is opened at the bottom of the sleeve and the bottom of the channel. A vent hole is opened on the pump core valve seat, and the air inlet of the sleeve corresponds to the vent hole of the pump core valve seat.

8. A highly integrated simplified foam pump according to claim 5, characterized in that: The pressing chamber has a second mating part, which extends and opens along the depth direction. The pump core also has a pump core sealing skirt, which expands in the opposite direction of the depth direction and mates with the second mating part of the pressing chamber to seal the opening of the second mating part of the pressing chamber.

9. A highly integrated simplified foam pump according to claim 1, characterized in that: The pump core valve seat also has, The second mounting part of the pump core valve seat is located below the first mounting part of the pump core valve seat along the depth direction and cooperates with the container opening.

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