Foam pump head

Abstract

The utility model discloses a foam pump head which comprises a gas bin, a gas pumping piston cover, a liquid bin, a liquid pumping piston pipe, a pressing head and a suction pipe. A plurality of groups of air inlet holes and a plurality of groups of air outlet holes are formed in the top of the air pumping piston cover, the air inlet holes and the air outlet holes are distributed around the circle center of the air pumping piston cover, the air inlet holes are formed in the outer side of the gathering pipe, and the air outlet holes are formed between the inner wall of the gathering pipe and the outer wall of the liquid pumping piston pipe; an air closing mechanism is mounted in the air bin, and when the pressing head is pressed down, the air outlet hole is opened, and the air inlet hole is closed; when the pressing head rebounds, the air outlet holes are closed, the air inlet holes are opened, due to the fact that the air outlet channels are distributed in the center, the air outlet channels can be fully mixed with emulsion in all directions, generated foam can be more dense, and due to the design of a mechanical structure, compared with a colloid sheet structure, faults are not prone to occurring, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsion pump heads, in particular to a foam pump head. Background Art

[0002] When people use emulsion detergents to wash their hair, face or take a bath, they squeeze out the emulsion in the pressing bottle through an emulsion pump and need to manually rub out foam for washing. For the convenience of use, a foam pump head has emerged later. A foam pump is a pump body that can generate and eject foam, which can directly extrude foam. It adopts the method of pumping liquid and gas simultaneously. After the gas and liquid are fully mixed, foam is generated. The air inlet hole and air outlet hole of the existing air outlet pump are controlled to open and close by a thin rubber sheet through atmospheric pressure. After long-term use, problems occur in the quality of the rubber sheet, blocking the air outlet hole, prone to failure, short service life, and the foam produced is not good, not dense enough. Content of the Utility Model

[0003] To solve the technical problems in the background art, the utility model proposes a foam pump head.

[0004] A foam pump head proposed by the utility model includes a gas chamber, a gas-pumping piston cover, a liquid chamber, a liquid-pumping piston tube, a pressing head and a straw. Both the gas chamber and the liquid chamber are cylindrical and their axes coincide. The liquid chamber is located in the inner cavity of the gas chamber and has a part extending out of the bottom of the gas chamber, and this part is connected with a straw. The gas-pumping piston cover and the liquid-pumping piston tube are integrally designed. The gas-pumping piston cover is movably sleeved with the gas chamber, and the liquid-pumping piston tube is movably sleeved with the liquid chamber.

[0005] A converging pipe is installed at the top of the gas-pumping piston cover. The liquid-pumping piston tube has a part extending out of the gas-pumping piston cover, and this part is located in the inner cavity of the converging pipe. A pressing head is installed at the top of the converging pipe.

[0006] A plurality of groups of air inlet holes and a plurality of groups of air outlet holes are opened at the top of the gas-pumping piston cover. The air inlet holes and air outlet holes are both distributed centered on the center of the circle of the gas-pumping piston cover. The air inlet holes are located outside the converging pipe, and the air outlet holes are located between the inner wall of the converging pipe and the outer wall of the liquid-pumping piston tube.

[0007] An airtight mechanism is installed in the gas chamber. When the pressing head is pressed down, the air outlet hole opens and the air inlet hole closes. When the pressing head rebounds, the air outlet hole closes and the air inlet hole opens.

[0008] Preferably, the airtight mechanism includes a cylinder and a turntable. The cylinder is vertically installed at the center of the bottom of the inner cavity of the gas chamber, and the liquid-pumping piston tube is movably sleeved with the cylinder.

[0009] The turntable is sleeved on the outer wall of the cylinder, and can move vertically on the outer wall of the cylinder. A return spring is installed between the bottom of the gas bin and the bottom of the turntable. A guide is vertically provided on the outer wall of the cylinder, and the turntable can rotate slightly during the up and down movement of the turntable.

[0010] A plurality of groups of air inlet channels and air outlet channels are provided on the turntable, and the air inlet channels and air outlet channels are centrally distributed on the center of the turntable. When the pressing head is pressed down, each of the air inlet channels is connected with each of the air inlet holes, and each of the air outlet channels is staggered with each of the air outlet holes; when the pressing head rebounds, each of the air outlet channels is connected with each of the air outlet holes, and each of the air inlet channels is staggered with each of the air inlet holes.

[0011] Preferably, the aperture of each air outlet channel of the turntable gradually decreases from bottom to top.

[0012] Preferably, a locking cover is installed on the outer side wall of the gas bin.

[0013] Preferably, a ring plate is installed on the top of the return spring, and a plurality of groups of pulleys are installed on the top of the ring plate, and each group of pulleys is used to support the turntable.

[0014] Preferably, a plurality of groups of gauze are installed in the converging tube.

[0015] In the utility model, a foam pump head is proposed. When the pressing head is pressed down, the lotion in the container is sucked up through the pump liquid piston tube and the liquid bin and stored in the liquid bin and finally flows into the convergence tube. At the same time, when the pump gas piston cover is pressed down, the air in the gas bin is pressed into the convergence tube, and is fully mixed with the lotion flowing out of the convergence tube, and foam is formed through the multi-layer gauze built in the mixing tube, and is led out from the liquid outlet hole of the pressing head. The turntable is sleeved on the outer wall of the cylinder, and the turntable can move vertically on the outer wall of the cylinder. A return spring is installed between the bottom of the gas bin and the bottom of the turntable. The outer wall of the cylinder is vertically provided with a guide member, which moves up and down when the turntable moves up and down. The turntable can rotate slightly during the movement; the turntable can rebound to its original position after being pressed down under the action of the return spring in the gas chamber, and the guide can be movably engaged with the turntable from the side. During the movement of the turntable, a slight deflection occurs, and this deflection can control the connecting pipe between the air inlet and the air outlet. The apertures of each air outlet channel of the turntable gradually decrease from bottom to top, and the gradual reduction in aperture can accelerate the air flow rate. Due to the central distribution of the air outlet channel, it can be fully mixed with the emulsion from all directions, which can make the generated foam denser. The design of the mechanical structure is less prone to failure than the structure of the gelatin sheet, thereby extending the service life.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 It is a schematic partial structural diagram of the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the gas chamber in the present utility model;

[0020] Figure 4 It is a top view of the air pumping piston cover in the present utility model;

[0021] Figure 5 It is a top view of the turntable in the present utility model;

[0022] Figure 6 It is a bottom view of the turntable in the present utility model;

[0023] Figure 7 It is a top view of the ring plate in the present utility model.

[0024] Explanation of the reference numerals in the figures: 1. Gas chamber; 101. Air pumping piston cover; 102. Air inlet hole; 103. Air outlet hole; 104. Converging pipe; 1041. Screen; 105. Return spring; 106. Ring plate; 1061. Pulley; 107. Cylindrical column; 1071. Guide member; 2. Liquid chamber; 201. Liquid pumping piston pipe; 3. Locking cover; 4. Pressing head; 5. Turntable; 501. Air inlet channel; 502. Air outlet channel; 6. Straw. Detailed Embodiment

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar symbols represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0026] As Figures 1-7 shown, a foam pump head includes a gas chamber 1, an air pumping piston cover 101, a liquid chamber 2, a liquid pumping piston pipe 201, a pressing head 4 and a straw 6. The gas chamber 1 and the liquid chamber 2 are both cylindrical and have coincident axes. The liquid chamber 2 is located in the inner cavity of the gas chamber 1 and has a part extending out of the bottom of the gas chamber 1, and this part is connected with a straw 6; the air pumping piston cover 101 and the liquid pumping piston pipe 201 are integrally designed. The air pumping piston cover 101 is movably sleeved with the gas chamber 1, and the liquid pumping piston pipe 201 is movably sleeved with the liquid chamber 2;

[0027] A converging pipe 104 is installed on the top of the pump air piston cover 101. The pump liquid piston pipe 201 has a part extending out of the pump air piston cover 101, and this part is located in the inner cavity of the converging pipe 104. A pressing head 4 is installed on the top of the converging pipe 104;

[0028] Multiple groups of air inlet holes 102 and multiple groups of air outlet holes 103 are opened on the top of the pump air piston cover 101. The air inlet holes 102 and the air outlet holes 103 are both distributed centered on the center of the pump air piston cover 101. The air inlet holes 102 are located outside the converging pipe 104, and the air outlet holes 103 are located between the inner wall of the converging pipe 104 and the outer wall of the pump liquid piston pipe 201;

[0029] An airtight mechanism is installed in the gas chamber 1. When the pressing head 4 is pressed down, the air outlet holes 103 are opened and the air inlet holes 102 are closed; when the pressing head 4 rebounds, the air outlet holes 103 are closed and the air inlet holes 102 are opened.

[0030] Press down the pressing head 4. Through the pump liquid piston pipe 201 and the liquid chamber 2, the emulsion in the container is sucked up and stored in the liquid chamber 2 and finally surges into the converging pipe 104. At the same time, when the pump air piston cover 101 is pressed down, the air in the gas chamber 1 is pressed into the converging pipe 104 and is fully mixed with the emulsion gushing out into the converging pipe 104. Through the multi-layer screen 1041 built in the mixing pipe, foam is formed and is led out from the liquid outlet hole of the pressing head 4.

[0031] Preferably, the airtight mechanism includes a cylinder column 107 and a turntable 5. The cylinder column 107 is vertically installed at the center of the bottom of the inner cavity of the gas chamber 1, and the pump liquid piston pipe 201 is movably sleeved with the cylinder column 107;

[0032] The turntable 5 is sleeved on the outer wall of the cylinder column 107. The turntable 5 can move vertically on the outer wall of the cylinder column 107. A return spring 105 is installed between the bottom of the gas chamber 1 and the bottom of the turntable 5. A guiding member 1071 is vertically provided on the outer wall of the cylinder column 107 and can rotate slightly during the up and down movement of the turntable 5;

[0033] Multiple groups of air inlet channels 501 and air outlet channels 502 are penetrated through the turntable 5. The air inlet channels 501 and the air outlet channels 502 are both distributed centered on the center of the turntable 5. When the pressing head 4 is pressed down, each of the air inlet channels 501 is docked with each of the air inlet holes 102, and each of the air outlet channels 502 is staggered from each of the air outlet holes 103; when the pressing head 4 rebounds, each of the air outlet channels 502 is docked with each of the air outlet holes 103, and each of the air inlet channels 501 is staggered from each of the air inlet holes 102.

[0034] The turntable 5 can rebound to its original position under the action of the return spring 105 in the gas chamber 1. The guide member 1071 can be movably clamped to the turntable 5 from the side. During the movement of the turntable 5, a slight deflection occurs, and this deflection can control the connecting pipe of the air inlet hole 102 and the air outlet hole 103.

[0035] Preferably, the aperture diameters of the respective air outlet channels 502 of the turntable 5 gradually decrease from bottom to top. The gradual decrease in the aperture diameter can accelerate the air flow rate. Since the air outlet channels 502 are distributed in the center, it can fully mix with the emulsion from all directions and make the generated foam denser.

[0036] Preferably, a lock cover 3 is installed on the outer side wall of the gas chamber 1, and the lock cover 3 can be detachably connected to the container.

[0037] Preferably, a ring plate 106 is installed at the top of the return spring 105, and multiple groups of pulleys 1061 are installed at the top of the ring plate 106. Each group of the pulleys 1061 is used to support the turntable 5, the ring plate 106 is used to support the turntable 5, and the pulleys 1061 can reduce the frictional resistance.

[0038] Preferably, multiple groups of wire meshes 1041 are installed in the converging pipe 104, which can facilitate the generation of foam.

[0039] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] As mentioned above, only the preferred specific embodiments of the present utility model are described, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A foam pump head, comprising a gas bin (1), a pump gas piston cover (101), a liquid bin (2), a pump liquid piston tube (201), a pressing head (4) and a straw (6), wherein the gas bin (1) and the liquid bin (2) are both cylindrical, and their axes coincide with each other, the liquid bin (2) is located in the inner cavity of the gas bin (1), and has a portion extending from the bottom of the gas bin (1), and the portion is connected to the straw (6), and is characterized in that: The gas pump piston cover (101) and the liquid pump piston tube (201) are designed in an integrated manner; the gas pump piston cover (101) is movably connected to the gas bin (1); and the liquid pump piston tube (201) is movably connected to the liquid bin (2); A convergence tube (104) is installed on the top of the gas pump piston cover (101); the liquid pump piston tube (201) has a portion extending out of the gas pump piston cover (101), the portion being located in the inner cavity of the convergence tube (104); and a pressing head (4) is installed on the top of the convergence tube (104); The top of the pump piston cover (101) is provided with a plurality of groups of air inlet holes (102) and a plurality of groups of air outlet holes (103), the air inlet holes (102) and the air outlet holes (103) are distributed around the center of the circle of the pump piston cover (101), the air inlet holes (102) are located outside the convergence tube (104), and the air outlet holes (103) are located between the inner wall of the convergence tube (104) and the outer wall of the pump piston tube (201); The gas chamber (1) is provided with an air-closing mechanism. When the pressing head (4) is pressed down, the air outlet (103) is opened and the air inlet (102) is closed; when the pressing head (4) rebounds, the air outlet (103) is closed and the air inlet (102) is opened.

2. A foam pump head according to claim 1, characterized in that: The gas-closing mechanism comprises a cylinder (107) and a rotating disk (5); the cylinder (107) is vertically mounted at the center of the bottom of the inner cavity of the gas bin (1); the pump piston tube (201) is movably sleeved with the cylinder (107); The turntable (5) is sleeved on the outer wall of the cylinder (107), and the turntable (5) can move vertically on the outer wall of the cylinder (107). A return spring (105) is installed between the bottom of the gas bin (1) and the bottom of the turntable (5). A guide member (1071) is vertically provided on the outer wall of the cylinder (107), and the turntable (5) can rotate slightly during the up and down movement. The rotating disk (5) is provided with a plurality of groups of air inlet channels (501) and air outlet channels (502), and the air inlet channels (501) and the air outlet channels (502) are centrally distributed on the center of the rotating disk (5). When the pressing head (4) is pressed down, each of the air inlet channels (501) is connected with each of the air inlet holes (102), and each of the air outlet channels (502) is staggered with each of the air outlet holes (103); when the pressing head (4) rebounds, each of the air outlet channels (502) is connected with each of the air outlet holes (103), and each of the air inlet channels (501) is staggered with each of the air inlet holes (102).

3. A foam pump head according to claim 2, characterized in that: The apertures of the various air outlet channels (502) of the rotating disk (5) gradually decrease from bottom to top.

4. A foam pump head according to claim 1, characterized in that: A locking cover (3) is installed on the outer side wall of the gas bin (1).

5. A foam pump head according to claim 2, characterized in that: A ring plate (106) is installed on the top of the return spring (105), and a plurality of groups of pulleys (1061) are installed on the top of the ring plate (106), and each group of pulleys (1061) is used to support the rotating disk (5).

6. A foam pump head according to claim 1, characterized in that: Multiple groups of gauze meshes (1041) are installed in the converging tube (104).

Images