High-integration simplified foam pump

Abstract

The invention 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, the elastic body is preferably a spring barrel, and the elastic body has the reset function and the one-way valve function and integrates 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] The invention belongs to the field of foam pumps, and in particular relates to a highly integrated simplified foam pump. Background Art

[0002] Foam pumps are a common packaging accessory, mainly used in personal care and cleaning products to facilitate users to squeeze out liquid and form foam. When using, users only need to press the pump head, and the liquid will be squeezed out through the nozzle of the pump head and mixed with air to form foam. The amount of liquid used can be reduced because the foam can cover a larger area. It can improve the product's user experience and make the product gentler and easier to apply.

[0003] Currently, there are many kinds of foam pumps on the market, all of which contain elastic parts, and most of the elastic parts are metal springs or plastic springs for easy recycling.

[0004] However, each foam pump currently has a large number of parts, including no less than 9 parts, and even more than 10 parts. This is not economical in terms of mold cost investment, assembly cost, and material usage. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a highly integrated and simplified foam pump. The foam pump has a small number of parts, only 7, and simple assembly through the high integration of parts, thereby reducing material usage and investment costs. In addition, the unique design of the foam pump can also be adapted to smaller bottle mouths.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A highly integrated simplified foam pump, the foam pump is installed on a predetermined container, the predetermined container has a container mouth and a container bottom, the direction in which the container mouth points to the container bottom is taken as the depth direction, the foam pump comprises a pressing head and a pump core valve seat, the pressing head is clearance-fitted 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,

[0008] Also includes,

[0009] The elastic body is installed in the installation chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively.

[0010] 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;

[0011] The pressing head comprises:

[0012] A liquid outlet portion, having a liquid outlet chamber inside, the liquid outlet chamber is communicated with the installation 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 also includes a first one-way valve and a second one-way valve, wherein the first one-way valve is mounted on the elastomer, and the air flow direction is from the outside of the pressing head through the inside of the pressing head to the inside of the elastomer, and the second one-way valve is mounted on the pump core valve seat, and the liquid flow direction is from the predetermined bottle mouth to the pump core valve seat.

[0014] Preferably, the elastic body has an air storage cavity inside, and the pump core is inserted into the air storage cavity.

[0015] Preferably, the pressing head comprises:

[0016] A pressing portion, wherein a pressing chamber is provided inside the pressing portion, and the pressing chamber is communicated with the liquid outlet chamber;

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

[0018] The pressing chamber matches with the elastic body, and the interior of the pressing chamber is communicated with the interior of the elastic body.

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

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

[0021] Press the connector, which extends in the depth direction.

[0022] The upper surface of the elastic body is provided with a matching groove along the depth direction, the pressing connecting piece matches with the matching groove, and the inner side wall of the pressing chamber matches and communicates with the interior of the elastic body.

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

[0024] The pump core valve seat has:

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

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

[0027] The pumping part extends in the depth direction, and the interior of the pumping part is connected with the interior of the first mounting part of the pump core valve seat.

[0028] The pump core is installed in the interior of the pump liquid part, the interior of the first installation part of the pump core valve seat and the pressing chamber in sequence along 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.

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

[0030] The inner cavity of the first mounting part of the pump core valve seat, and after the pressing head is covered on the pump core valve seat, the mounting chamber is formed by the inner cavity of the first mounting part of the pump core valve seat and the pressing chamber being connected;

[0031] The interior of the pump liquid part forms a pump liquid part inner cavity, and the pump liquid part inner cavity is connected with the inner cavity of the first mounting part of the pump core valve seat.

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

[0033] Preferably, the pump core has:

[0034] A pump core piston is arranged on the lower surface of the pump core along the depth direction and cooperates with the pump liquid part, and the pump core chamber is open on the pump core piston along the depth direction;

[0035] An upper air outlet valve is provided on the pump core and cooperates with the elastic body;

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

[0037] Furthermore, the pump core piston has a first skirt surface of the pump core piston extending and expanding 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 is provided with an upper air outlet valve skirt extending and expanding in the opposite direction of the depth direction, the upper air outlet valve skirt is continuously closed, and the elastic body is provided with an elastic body contact portion, and the elastic body contact portion cooperates with the air outlet valve skirt surface;

[0039] The upper liquid outlet valve has an upper liquid outlet valve skirt extending and expanding in the opposite direction of the depth direction, the upper liquid outlet valve skirt is continuously closed, the pressing chamber has a first pressing chamber matching part, and the upper liquid outlet valve skirt matches the first pressing chamber matching part.

[0040] Preferably, the pump core piston also has a second skirt surface of the pump core piston extending and expanding in the opposite direction of 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 pump liquid part.

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

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

[0043] Furthermore, the pump core chamber is open at the position of the second matching portion of the pressing chamber, is located below the first matching portion of the pressing chamber, and is blocked by the upper liquid outlet valve.

[0044] Preferably, the pump core valve seat also has:

[0045] The second mounting portion of the pump core valve seat is located below the first mounting portion of the pump core valve seat along the depth direction and matches with the container mouth.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. Because the foam pump in the present invention is installed on a predetermined container, the predetermined container has a container mouth and a container bottom, and the direction in which the container mouth points 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, including an elastic body, which is installed in the installation chamber along the depth direction and contacts the pressing head and the pump core valve seat respectively, and 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 portion, which has a liquid outlet chamber inside, the liquid outlet chamber is connected to the installation chamber, and a filter is installed in the liquid outlet chamber, and 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 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, and the second one-way valve is installed in the pump The foam pump is composed of 7 core parts, namely, an elastomer, a pump core, a pressing head, a pump core valve seat, two one-way valves and a filter, among which the parts with the highest degree of integration are the elastomer and the pump core. Among them, the elastomer is preferably a spring cylinder, because it has the function of spring cylinder reset, the function of one-way valve, and the function of storing gas is integrated; the pump core has the function of one-way valve, the function of piston suction and pressure of liquid, and the function of balancing the air pressure inside and outside the bottle; the pressing head has a self-locking function, which can allow the pump head to pass the negative pressure test, and there will be no leakage during transportation; at the same time, the air storage cavity is designed outside the predetermined container and is located above the predetermined container in the opposite direction of the depth direction, so that the foam pump can be adapted to a smaller bottle mouth, the pump body has a small number of parts, is easy to assemble, requires less mold investment, and the all-plastic pump is also conducive to recycling, which has obvious advantages in environmental protection and reducing the use of plastics.

[0048] 2. Because the pressing head in the present invention includes a pressing part, which has a pressing chamber inside, and the pressing chamber is connected with the liquid outlet chamber; the pump core valve seat is inserted in the pressing chamber along the depth direction; the pressing chamber cooperates with the elastomer, and the interior of the pressing chamber is connected with the interior of the elastomer, the purpose is the elastomer, preferably a spring cylinder, because it has the function of spring cylinder reset, the gas inside the elastomer can enter the pressing chamber, so that the elastomer has the function of a one-way valve, and the interior of the elastomer has the function of storing gas.

[0049] 3. Because the pump core valve seat in the present invention has a first mounting portion of the pump core valve seat, which is inserted in the pressing chamber in the opposite direction of the depth direction, and the mounting chamber is formed by the interior of the first mounting portion of the pump core valve seat being connected with the pressing chamber, and the lower end of the elastomer in the depth direction cooperates with the interior of the first mounting portion of the pump core valve seat; the pump liquid portion extends in the depth direction, and the interior of the pump liquid portion is connected with the interior of the first mounting portion of the pump core valve seat, and the pump core is installed in the interior of the pump liquid portion, the interior of the first mounting portion of the pump core valve seat and the pressing chamber in sequence in the opposite direction of the depth direction, and the interior of the pump liquid portion, 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 portion of the pump core valve seat, and to also fix the elastomer in the mounting chamber, and the pump core is installed in the above structure, the above device achieves the advantages of simple installation and fewer parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a cross-sectional view of the internal structure of the foam pump of the present invention;

[0051] Figure 2 This is a working principle diagram of the upper liquid outlet valve and the upper air outlet valve in the foam pump of the present invention;

[0052] Figure 3 It is a schematic diagram of the state in which the buckle on the pressing head of the present invention is clamped in the valve seat of the pump core, that is, it is a schematic diagram of the state of the air storage cavity in the elastic body when the pressing head is pressed;

[0053] Figure 4 It is a flow chart of the principle of replenishing gas in a foam pump of a predetermined container in the present invention, wherein arrows indicate the sequence;

[0054] Figure 5 It is a schematic diagram of the positions of the ventilation gap and the ventilation chamber on the pressing head in the present invention, that is, a schematic diagram of the positions between the ventilation chamber, the ventilation gap and the first one-way valve;

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

[0056] In the figure: pressing head 1; pressing part 11; pressing chamber 111; pressing connector 1111; pressing chamber first matching part 1112; pressing chamber second matching part 1113; ventilation chamber 112; ventilation gap 1121; liquid outlet part 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; pump core piston first skirt 231; pump core piston second skirt 232; sleeve 233; channel 234; upper air outlet valve 24; upper The outlet valve skirt 241; the pump core sealing skirt 25; the pump core valve seat 3; the first mounting portion 31 of the pump core valve seat; the inner cavity 311 of the first mounting portion of the pump core valve seat; the second mounting portion 32 of the pump core valve seat; the inner cavity 321 of the second mounting portion of the pump core valve seat; the inner cavity skirt 322 of the second mounting portion of the pump core valve seat; the pump liquid portion 33; the inner cavity 331 of the pump liquid portion; the elastomer 4; the air storage cavity 41; the elastomer contact portion 42; the first one-way valve 51; the second one-way valve 52; the predetermined container 6; the container mouth 61; the sleeve air inlet hole 7; the pump core valve seat air vent 8; the suction pipe 9; the filter screen 10. DETAILED DESCRIPTION

[0057] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is specifically described in the following embodiments in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention.

[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 mouth 61 and a container bottom. The direction in which the container mouth 61 points to the container bottom is taken as the depth direction D. The foam pump comprises a pressing head 1 and a pump core valve seat 3. The pressing head 1 is clearance-fitted on the pump core valve seat 3 along the depth direction D. Specifically, a buckle 13 is provided on the pressing head 1, and a locking position is provided on the pump core valve seat 3. The buckle 34 is locked in the locking position to fix the pressing head 1 on 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 completely pressed and reset on the pump core valve seat 3, it can be self-locked, and the interior of the pressing head 1 and the interior of the pump core valve seat 3 form an installation chamber.

[0059] The elastic body 4 is installed in the installation chamber along the depth direction D and contacts the pressing head 1 and the pump core valve seat 3 respectively.

[0060] The pump core 2 is installed in the installation 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 cavity 41 inside, and the pump core 2 is inserted into the air storage cavity 41;

[0061] The pressing head 1 comprises:

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

[0063] The liquid outlet portion 12 has a liquid outlet chamber 121 therein, and one end of the liquid outlet chamber 121 is connected to the pressing chamber 111, and the other end is open along the end of the pressing head 1, and a filter screen 10 is installed in the liquid outlet chamber 121. It should be noted that the filter screen 10 is fixedly arranged 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 cooperates with the elastomer 4, and the interior of the pressing chamber 111 is connected with the interior of the elastomer 4; specifically: the interior of the pressing chamber 111 is provided with a pressing connector 1111, which extends along the depth direction D, and the upper surface of the elastomer 4 is provided with a matching groove along the depth direction D, the pressing connector 1111 cooperates with the matching groove, and the internal side wall of the pressing chamber 111 cooperates with the elastomer 4.

[0066] The foam pump further comprises a first one-way valve 51 and a second one-way valve 52. The first one-way valve 51 is mounted on the elastic body 4. Specifically, the first one-way valve 51 is mounted between the elastic body 4 and the pressing head 1, and the pressing head 1 and the pump core valve seat 3 are clearance-matched. The pressing chamber 1 has a venting chamber 112 therein, and the side wall of the venting chamber 112 has a venting gap 1121. The venting gap 112 is connected to the gap between the pressing chamber 111 and the pump core valve seat 3, and the venting chamber 112 corresponds to the first one-way valve 51. For this reason, 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 clearance-matched. The pressing chamber 1 has a venting chamber 112 therein, and the side wall of the venting chamber 112 has a venting gap 1121. The venting gap 112 is connected to the gap between the pressing chamber 111 and the pump core valve seat 3, and the venting chamber 112 corresponds to the first one-way valve 51. The one-way valve 51 is used to block or circulate the gas between the pressing chamber 111 and the air storage chamber 41, and the air flow direction is from the outside of the pressing head 1 through the inside of the pressing head 1 to the inside of the elastomer 4. The second one-way valve 52 is installed on the pump core valve seat 3. Specifically, the second one-way valve 52 is installed on the pump liquid part 33, and is used to block or circulate the liquid between the pump liquid part cavity 331 and the suction tube 9 (it should be noted that the suction tube is installed at the container mouth 61 and extends into the predetermined container 6 along the depth direction D), and the liquid flows from the predetermined container 6 to the pump core valve seat 3.

[0067] The pump core valve seat 3 has:

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

[0069] The lower end of the elastic body 4 along the depth direction D cooperates with the interior of the first mounting portion 31 of the pump core valve seat. Specifically, the lower end of the elastic body 4 along the depth direction D cooperates with the side wall of the inner cavity 311 of the first mounting portion 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 mouth 61; specifically, the second mounting portion 32 of the pump core valve seat has a second mounting portion inner cavity 321 of the pump core valve seat, and the second mounting portion inner cavity 321 of the pump core valve seat extends and is open along the depth direction D. The container mouth 61 is inserted into the second mounting portion inner cavity 321 of the pump core valve seat through the open portion of the second mounting portion inner cavity 321 of the pump core valve seat along the opposite direction of the depth direction D, and is threadedly matched with the second mounting portion inner cavity 321 of the pump core valve seat. More specifically, the pump A pump core valve seat second installation cavity skirt 322 is provided inside the second installation cavity 321 of the core valve seat, and the pump core valve seat second installation cavity skirt 322 extends along the depth direction D and is concentric with the pump core valve seat second installation portion 32, and an internal thread is provided on the side wall of the pump core valve seat second installation cavity skirt 322, and an external thread is provided on the container mouth 61, and the internal thread and the external thread are screwed together to connect the predetermined container 6 with the pump core valve seat second installation cavity skirt 322, and a gap is formed between the pump core valve seat second installation cavity skirt 322 and the pump core valve seat second installation cavity 321;

[0071] The pumping liquid part 33 extends along the depth direction D, and the interior of the pumping liquid part 33 is connected with the interior of the first installation part 31 of the pump core valve seat. Specifically, the pumping liquid part 33 extends along the depth direction D, and forms a pumping liquid part inner cavity 331 therein, and the pumping liquid part inner cavity 331 is connected with the inner cavity 311 of the first installation part of the pump core valve seat.

[0072] The pump core 2 is sequentially installed in the interior of the pump liquid part 33, the interior of the first installation part 31 of the pump core valve seat, and the pressing chamber 111 along the opposite direction of the depth direction D, and the interior of the pump liquid part 33, the interior of the pump core 2, and the pressing chamber 111 are sequentially connected, specifically: the pump core 2 is sequentially installed in the inner cavity 331 of the pump liquid part, the inner cavity of the first installation part 311 of the pump core valve seat, and the pressing chamber 111 along the opposite direction of the depth direction D; the interior of the pump core 2 has a pump core chamber 21, and the inner cavity 331 of the pump liquid part, the pump core chamber 21, and the pressing chamber 111 are sequentially connected;

[0073] The pump core 2 has:

[0074] The pump core piston 23 is arranged on the lower surface of the pump core 2 along the depth direction D and cooperates with the pump liquid part 33. The pump core chamber 21 is open on the pump core piston 23 along the depth direction D. Specifically, the pump core piston 23 has a first skirt surface 231 of the pump core piston extending and expanding along the depth direction D. The first skirt surface 231 of the pump core piston continuously closes and seals the pump liquid part 33. The first skirt surface 231 of the pump core piston is interference fit with the pump liquid part 33. The pump core piston 23 also has a second skirt surface 232 of the pump core piston extending and expanding in the opposite direction of the depth direction D. The two skirt surfaces 232 are continuously closed and seal the pump liquid part 33, and the second skirt surface 232 of the pump core piston is interference fit with the pump liquid part 33; specifically: the first skirt surface 231 of the pump core piston and the second skirt surface 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 channel 234 and the bottom of the sleeve 233 are provided with a sleeve air inlet hole 7, the pump core valve seat 3 is provided with a pump core valve seat air vent 8, and the sleeve air inlet hole 7 corresponds to the pump core valve seat air 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 extending and expanding in the opposite direction of the depth direction D, the upper air outlet valve skirt 241 is continuously closed, and 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 liquid outlet valve 22 is arranged on the upper surface of the pump core 2 along the depth direction D and has an interference fit with the pressing chamber 111. Specifically, the upper liquid outlet valve 22 has an upper liquid outlet valve skirt 221 extending and expanding in the opposite direction of the depth direction D, the upper liquid outlet valve skirt 221 is continuously closed, and the pressing chamber 111 has a pressing chamber first matching portion 1112, and the upper liquid outlet valve skirt 221 matches with the pressing chamber first matching portion 1112.

[0077] The pressing chamber 111 has a pressing chamber second fitting portion 1113, and the pressing chamber second fitting portion 1113 extends and is open along the depth direction D. The pump core 2 also has a pump core sealing skirt 25, and the pump core sealing skirt 25 expands in the opposite direction of the depth direction D and is interference fit with the pressing chamber second fitting portion 1113 to seal the opening of the pressing chamber second fitting portion 1113; specifically: the pump core chamber 21 is open at the position of the pressing chamber second fitting portion 1113, and is located below the pressing chamber first fitting portion 1112, and is blocked by the upper liquid outlet valve 22.

[0078] It should be noted that the pressing connector 1111, the pressing chamber first matching part 1112, and the pressing chamber second matching part 1113 are all cylindrical, and the three are concentrically arranged, and the three cylindrical pressing connectors 1111, the pressing chamber first matching part 1112, and the pressing chamber second matching part 1113 jointly open a liquid-gas mixing hole 14, the pressing connector 1111 is located at the outermost side, and the pressing chamber first matching part 1112 is located at the innermost side, and the lengths of the three along the depth direction D, the lengths of the pressing connector 1111, the pressing chamber second matching part 1113, and the pressing chamber first matching part 1112 decrease successively.

[0079] With the above solution, the pump core 2 acts as a pump core piston to absorb liquid on the one hand, and acts as an upper valve to control the one-way passage of liquid on the other hand;

[0080] The elastic body 4 is preferably a spring tube in this embodiment, which has the function of storing gas on the one hand and springing and pressing the head 1 on the other hand.

[0081] The pressures on the components of the present invention are analyzed as follows:

[0082] 1. Gas cavity pressure analysis:

[0083] When pressing, the pressing head 1 moves downward. Since the friction 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 friction force F1 between the upper exhaust valve skirt 241 and the elastic body contact part 42, when the pressing head 1 moves, due to the distance factor between the end of the pump core 2 extending in the opposite direction of the depth direction D and the inner top of the pressing chamber 111, the pump core 2 will not move downward immediately. At this time, under the action of the pressing force, the pressing head 1 and the top surface of the spring cylinder will move downward, and the pressing head 1 and the top surface of the spring cylinder will contact with each other. The pump core 2 moves relative to each other, and the upper liquid outlet valve 22 and the upper air outlet valve 24 are opened together. The upper liquid outlet valve skirt 221 opens the opening of the first matching 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 pressure P1 inside the air storage chamber 41 will increase. The first one-way valve 51 is a one-way valve that can only take in air but not let out air. In order to balance the pressure inside and outside the air storage chamber 41, the gas will continue to be squeezed out from the upper air outlet valve 24.

[0084] During rebound, the pressing head 1 moves in the opposite direction of the depth direction D under the resetting action of the elastic body 4, i.e., the spring cylinder. Similarly, since the friction 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 friction force F1 between the upper air outlet valve skirt 241 and the elastic body contact part 42, when the pressing head rebounds first, the pump core 2 does not move, the upper air outlet valve skirt 241 is closed to block it, and the elastic body 4, i.e., the spring cylinder continues to move in the opposite direction of the depth direction D, the pressure P1 of the air storage chamber 41 is reduced, and the first one-way valve 51 is opened. In order to balance the air pressure in the air storage chamber 41, the external gas passes through The gas flows through the gap between the pressing head 1 and the pump core valve seat 3, and then enters the ventilation chamber 112 through the ventilation gap 1121. The air pressure in the ventilation chamber 112 is higher than the air pressure inside the air storage chamber 41, so that the first one-way valve 51 enters the air storage chamber 41. After one cycle is completed, the gas flows as follows: the gas flows through the gap between the pressing head 1 and the pump core valve seat 3, and then enters the ventilation chamber 112 through the ventilation gap 1121. The air pressure in the ventilation chamber 112 is higher than the air pressure inside the air storage chamber 41, so that the first one-way valve 51 enters the air storage chamber 41, and then enters the pressing chamber 111 when the outlet valve skirt 241 is opened.

[0085] 2. Liquid cavity pressure analysis:

[0086] When the pressure is first pressed, the pressing head 1 moves downward. Since the friction 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 friction force F1 between the upper air outlet valve skirt 241 and the elastic body contact part 42, when the pressing head moves, the pump core 2 does not move, and the pressing head 1 and the pump core 2 move relative to each other. The upper air outlet valve 24 opens. When the pressure continues to be pressed downward, the internal pressure of the pump core chamber 21 will increase. The second one-way valve 52 is a one-way valve, and liquid can only enter but not exit. In order to balance the air pressure inside and outside the liquid storage chamber, the gas will continue to be squeezed out from the upper air outlet valve 24. When rebounding, similarly, since the friction 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 friction force F1 between the upper air outlet valve skirt 241 and the elastic body contact part 42, the pressing head 1 rebounds first. , the pump core 2 does not move, the upper air outlet valve 24 is closed everywhere, the elastic body 4 continues to rebound, the pressure in the inner cavity 331 of the pump liquid part decreases, causing the second one-way valve 52 to open, in order to balance the pressure in the inner cavity 331 of the pump liquid part, the suction pipe draws liquid from the predetermined container into the inner cavity 331 of the pump liquid part, and continues to press after resetting, and the air in the inner cavity 331 of the pump liquid part will continue to be discharged, and when the gas in the inner cavity 331 of the pump liquid part is completely discharged, when pressing again, what comes out is liquid, and the flow direction of the liquid is: the liquid is flushed open by the suction pipe 9 and the second one-way valve 52, and then reaches the pressing chamber 111 through the pump core chamber 21 and the pump core sealing skirt 25, and then mixes with the gas in the pressing chamber 111, and then passes through the filter screen 10 in the liquid outlet chamber 121, so that the liquid and gas form foam when passing through the filter screen 10.

[0087] At the same time, since the liquid in the predetermined container 6 is decreasing, there will be negative pressure in the predetermined container 6, which will cause the predetermined container 6 to be flattened. The newly designed foam pump has a brand-new ventilation structure designed between the pump core piston 23 and the pump core valve seat 3. The 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 is connected with the pump core valve seat vent hole 8, the gas enters the predetermined container 6 at this time, 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 are connected, and ventilation is performed once. If the pressure continues to be pressed, the ventilation hole is blocked again. When the spring tube rebounds, the ventilation hole will also be connected once. This ventilation structure presses and rebounds once, and ventilates twice. This new highly integrated simplified pump has all the functional performance of the current foam pump, but due to its simple structure, low investment, low plastic usage, and all-plastic pump is easy to recycle.

[0088] The above-mentioned implementation modes are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. A highly integrated simplified foam pump, the foam pump is installed on a predetermined container, the predetermined container has a container mouth and a container bottom, the direction of the container mouth pointing to the container bottom is taken as the depth direction, the foam pump comprises a pressing head and a pump core valve seat, the pressing head is clearance-fitted 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, characterized in that: include, The elastic body 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 comprises: A liquid outlet portion, having a liquid outlet chamber inside, the liquid outlet chamber is communicated with the installation 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 also includes a first one-way valve and a second one-way valve, wherein the first one-way valve is mounted on the elastomer, and the air flow direction is from the outside of the pressing head through the inside of the pressing head to the inside of the elastomer, and the second one-way valve is mounted on the pump core valve seat, and the liquid flow direction is from the predetermined bottle mouth to the pump core valve seat.

2. A highly integrated simplified foam pump according to claim 1, characterized in that: The pressing head comprises: A pressing portion, wherein a pressing chamber is provided inside the pressing portion, and the pressing chamber is communicated with the liquid outlet chamber; The pump core valve seat is inserted into the pressing chamber along the depth direction; The pressing chamber matches with the elastic body, and the interior of the pressing chamber is communicated with the interior of the elastic body.

3. The highly integrated simplified foam pump according to claim 1, characterized in that: The pump core valve seat has: The first mounting portion of the pump core valve seat is inserted into the pressing chamber in the opposite direction of the depth direction, and the mounting chamber is formed by the interior of the first mounting portion of the pump core valve seat being connected to the pressing chamber. The lower end of the elastic body along the depth direction cooperates with the interior of the first mounting portion of the pump core valve seat; The pumping part extends in the depth direction, and the interior of the pumping part is connected with the interior of the first mounting part of the pump core valve seat. The pump core is installed in the interior of the pump liquid part, the interior of the first installation part of the pump core valve seat and the pressing chamber in sequence along 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.

4. The highly integrated simplified foam pump according to claim 1, characterized in that: The pump core has: A pump core piston is arranged on the lower surface of the pump core along the depth direction and cooperates with the pump liquid part, and the interior of the pump core is open on the pump core piston along the depth direction; An upper air outlet valve is provided on the pump core and cooperates with the elastic body; The upper liquid outlet valve is arranged on the upper surface of the pump core along the depth direction, matches with the pressing chamber, and is located above the upper air outlet valve.

5. The highly integrated simplified foam pump according to claim 4, characterized in that: The pump core piston has a first skirt surface of the pump core piston extending and expanding 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; The upper air outlet valve is provided with an upper air outlet valve skirt extending and expanding in the opposite direction of the depth direction, the upper air outlet valve skirt is continuously closed, and the elastic body is provided with an elastic body contact portion, and the elastic body contact portion cooperates with the air outlet valve skirt surface; The upper liquid outlet valve has an upper liquid outlet valve skirt extending and expanding in the opposite direction of the depth direction, the upper liquid outlet valve skirt is continuously closed, the pressing chamber has a first pressing chamber matching part, and the upper liquid outlet valve skirt matches the first pressing chamber matching part.

6. The highly integrated simplified foam pump according to claim 5, characterized in that: The pump core piston also has a second skirt surface of the pump core piston extending and expanding in the opposite direction of 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 pump liquid part.

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

8. The highly integrated simplified foam pump according to claim 1, characterized in that: The pressing chamber has a second fitting portion therein, and the second fitting portion extends and opens along the depth direction. The pump core also has a pump core sealing skirt, and the pump core sealing skirt expands in the opposite direction of the depth direction and cooperates with the second fitting portion of the pressing chamber to seal the opening of the second fitting portion of the pressing chamber.

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

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