Foam pump

Abstract

The utility model provides a foam pump. The foam pump comprises a pressing head, an outer cover, a screen piece, a large bat, a blade, a main column, an all-plastic spring, a piston, an auxiliary column, a sealing piece, a sealing part and a small cylinder. The spring arranged in the embodiment of the utility model is an all-plastic spring, so that plastic products are convenient to recycle; the all-plastic spring is arranged in the air chamber and does not make direct contact with liquid in the liquid conveying channel of the foam pump, and the risk that the liquid in the liquid conveying channel is polluted can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of foam pump nozzles, and in particular to a foam pump. Background Art

[0002] Foam pumps are mainly used in daily chemical products. When used, the foam pump mixes the liquid in the bottle with air to form a foamy substance, eliminating the step of manually kneading and foaming, making cleaning easier. The main working principle of the foam pump is: using the pressing action to form a pressure difference in the bottle, driving the liquid in the bottle to move upward, the liquid in the bottle contacts the air to form foam, and then sprays out from the nozzle.

[0003] The spring in the commonly used foam pump is set in the liquid transmission channel, and the spring is made of metal. This type of foam pump has the following defects: (1) The other parts of the foam pump are made of plastic, and the spring is made of metal. When recycling, the metal and plastic need to be separated, which is not conducive to the recycling of plastic products. (2) The metal spring is set in the liquid transmission channel. On the one hand, the metal spring is easily oxidized and corroded by the liquid, which affects the service life of the metal spring. On the other hand, the metal spring and the oxide of the metal spring are easy to contaminate the liquid in the bottle.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a foam pump; including a head, an outer cover, a screen, a large racket, blades, a main column, an all-plastic spring, a piston, a secondary column, a seal, a sealing part, and a small cylinder. The spring provided in the embodiment of this application is an all-plastic spring, which is convenient for recycling plastic products; the all-plastic spring is provided in the air chamber and does not directly contact the liquid in the liquid transmission channel of the foam pump, which can effectively reduce the risk of contamination of the liquid in the liquid transmission channel.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] A foam pump, comprising a head, an outer cover, a screen, a large racket, blades, a main column, a full-plastic spring, a piston, a secondary column, a sealing component, a sealing part, and a small cylinder;

[0008] The pressing head is sleeved in the outer cover, and the outer cover is sleeved on the small tube; the screen is arranged in the pressing head, one end of which is connected to the pressing head, and the other end is connected to one end of the large racket; the other end of the large racket is movably connected in the small tube;

[0009] The other end of the large racket is provided with a blade, and is connected to one end of the main column; the other end of the main column is movably connected to the auxiliary column through a piston; the main column, the piston, and the auxiliary column together form a liquid transmission channel;

[0010] A sealing member is arranged at the bottom of the small tube; a sealing portion is arranged inside the small tube, and the sealing portion is arranged above the sealing member to separate the small tube into an air chamber and a liquid storage chamber which are not communicated with each other; the air chamber is far away from the sealing member relative to the liquid storage chamber;

[0011] The sealing portion is provided with a channel for the liquid transmission channel to perform vertical reciprocating motion, and when the liquid transmission channel moves to the lowest point, it can penetrate the sealing portion and reach the liquid storage chamber;

[0012] The all-plastic spring is arranged in the air chamber, one end of which is sleeved on the main column, and the other end of which is arranged on the sealing part.

[0013] In some of the embodiments, a dust cover is further included, wherein the dust cover is disposed on the pressing head and is detachably connected to the pressing head.

[0014] In some embodiments, a straw is further included, and the straw is disposed at the bottom of the small tube.

[0015] In some embodiments, the screen member is a tubular structure, and one or more screens are disposed at the end or inside of the screen member; the screens are perpendicular to the screen member.

[0016] In some embodiments, the large racket includes a column portion and a piston portion; the column portion is connected to the screen member, the piston portion is provided with a through hole and a fitting portion, and the blade is arranged in the piston portion through the fitting portion.

[0017] In some embodiments, the blade is a tubular structure, with outer blades provided on the outer side wall and inner blades that can be opened and closed provided on the inner side wall.

[0018] In some embodiments, a first limiting component is provided on the outer side wall of the main column, and a second limiting component is provided on the inner side wall; and a first sealing position is provided on the first limiting component.

[0019] In some embodiments, a second sealing position is provided on the secondary column, and a third limiting component is further provided at one end close to the second sealing position.

[0020] In some embodiments, a through hole is provided at the bottom of the liquid storage chamber of the small tube, and the sealing member is placed in the liquid storage chamber and seals the through hole; the sealing member is a plastic bead or a glass bead.

[0021] In some embodiments, a gasket is provided at the connection position between the outer cover and the small tube.

[0022] In the technical solution of the present application, the push head is manually pressed downward, and the outer leaves of the blades and the large beat form a seal on the air chamber; the volume decreases and the pressure increases, so that the inner leaves of the blades and the main column seal are opened; the gas flows to the screen member, and at the same time, the piston and the auxiliary column seal are opened, and the seal forms a seal with the small cylinder, and the liquid in the small cylinder is pumped out through the auxiliary column, flows to the screen member and mixes with the gas to form foam, and is sprayed out of the pump head through the push head nozzle. When the hand releases the push head, under the action of the all-plastic spring, the push head rebounds upward, and the inner leaves of the blades and the main column form a seal to prevent the liquid from flowing back to the air chamber; at the same time, the outer leaves of the blades and the large beat seal are opened to replenish gas to the air chamber, and at this time, the small cylinder and the piston form a vacuum, and when the piston moves upward, the piston and the auxiliary column are sealed, and the seal and the small cylinder seal are opened to suck in the liquid in the bottle; at this time, there is already a certain amount of liquid in the small cylinder. When the push head is pressed again, the liquid stored in the small cylinder will rush forward, mix with the gas through the screen member to form foam, and be sprayed out of the pump head through the push head nozzle. The spring provided in the embodiment of the present application is an all-plastic spring, which is convenient for recycling plastic products; the all-plastic spring is provided in the air chamber and does not directly contact the liquid in the liquid transmission channel of the foam pump, which can effectively reduce the risk of contamination of the liquid in the liquid transmission channel.

[0023] It should be pointed out that the metal spring in the commonly used foam pump is directly arranged in the liquid transmission channel. The reason for selecting the metal spring is that the metal spring has the advantages of small size and high elasticity, so that the foam pump made is small in size, and has the advantages of lightness, compactness, and easy transportation. Under this type of structure, directly replacing the metal spring with a plastic spring has many defects, because ordinary plastic springs have the characteristics of low elasticity and large size. If the metal spring is directly replaced with a plastic spring, although it is beneficial to the recycling of plastic products, the volume of the plastic spring is large, which requires increasing the volume of the liquid transmission channel, and ultimately leads to a large volume of the foam pump, which loses its advantages of lightness, compactness, and easy transportation. Moreover, increasing the volume of the liquid transmission channel means increasing the diameter of the liquid transmission channel. As the diameter increases, the pressure on the pipeline will also increase, and the wall thickness of the liquid transmission channel needs to be increased to ensure the service life of the liquid transmission channel, which invisibly increases the production cost of the foam pump. The foam pump disclosed in the embodiment of the present application replaces the metal spring with an all-plastic spring. Since the all-plastic spring is arranged in the air chamber, the foam pump under this structure still has the advantages of being light, compact, and easy to transport. Therefore, the foam pump provided in the embodiment of the present application has a reasonable structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0025] Figure 1 This is an exploded view of the foam pump according to an embodiment of the present application.

[0026] Figure 2 This is a cross-sectional view of a foam pump according to an embodiment of the present application.

[0027] Figure 3 It is a cross-sectional view of the screen member according to an embodiment of the present application.

[0028] Figure 4 This is a cross-sectional view of an embodiment of the present application.

[0029] Figure 5 This is a cross-sectional view of a blade according to an embodiment of the present application.

[0030] Figure 6 This is a cross-sectional view of the main column of an embodiment of the present application.

[0031] Figure 7 This is a schematic diagram of the structure of the main column of an embodiment of the present application.

[0032] Figure 8 This is a schematic diagram of the structure of the secondary column of an embodiment of the present application.

[0033] Fig. 9 This is a cross-sectional view of the small tube according to an embodiment of the present application.

[0034] Fig.10 This is a schematic diagram of the structure of the dust cover according to an embodiment of the present application.

[0035] Fig.11 This is a cross-sectional view of a head according to an embodiment of the present application.

[0036] Fig.12 It is a cross-sectional view of the outer cover of the embodiment of the present application.

[0037] Fig.13 This is a schematic diagram of the structure of the all-plastic spring according to an embodiment of the present application.

[0038] Fig.14 This is a cross-sectional view of the piston according to an embodiment of the present application.

[0039] Fig.15 This is an assembly diagram of component 1 of an embodiment of the present application.

[0040] Numbers in the figure: 1. Dust cover; 2. Press head; 3. Outer cover; 4. Screen member; 5. Gasket; 6. Big beater; 7. Blade; 8. Main column; 9. All-plastic spring; 10. Piston; 11. Sub-column; 12. Seal; 13. Sealing part; 14. Small tube; 15. Straw; 41. Screen; 61. Column; 62. Piston; 621. Fitting part; 71. Outer leaf; 72. Inner leaf; 81. First limiting component; 82. Second limiting component; 83. First sealing position; 111. Second sealing position; 112. Third limiting component; 141. Through hole; X. Air chamber; Y. Liquid storage chamber. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. Wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0042] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present disclosure, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not mean that the present disclosure necessarily has the first element, component, region, layer or part.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] The present application provides a foam pump, including a head, an outer cover, a screen, a large flap, blades, a main column, an all-plastic spring, a piston, a secondary column, a sealing member, a sealing part, and a small cylinder. The spring is an all-plastic spring, and compared with a foam pump with a metal spring, the recycling of plastic products can be completed without separating metal and plastic, and the recycling of plastic products is more convenient; the all-plastic spring is arranged in the air chamber and does not directly contact the liquid in the liquid transmission channel of the foam pump, which can effectively reduce the risk of contamination of the liquid in the liquid transmission channel.

[0046] The present application embodiment provides a foam pump, such as Figure 1 , Figure 2 As shown, it includes a pressing head 2, an outer cover 3, a screen member 4, a large racket 6, blades 7, a main column 8, a full plastic spring 9, a piston 10, a secondary column 11, a sealing member 12, a sealing portion 13, and a small cylinder 14;

[0047] The pressing head 2 is sleeved in the outer cover 3, and the outer cover 3 is sleeved on the small tube 14; the screen member 4 is arranged in the pressing head 2, one end of which is connected to the pressing head 2, and the other end is connected to one end of the large beater 6; the other end of the large beater 6 is movably connected in the small tube 14;

[0048] The other end of the large racket 6 is provided with a blade 7, which is connected to one end of a main column 8; the other end of the main column 8 is movably connected to a secondary column 11 through a piston 10; the main column 8, the piston 10, and the secondary column 11 together form a liquid transmission channel;

[0049] A sealing member 12 is provided at the bottom of the small tube 14; a sealing portion 13 is provided in the small tube 14, and the sealing portion 13 is provided above the sealing member 12 to separate the small tube 14 into an air chamber X and a liquid storage chamber Y which are not connected to each other; the air chamber X is far away from the sealing member 12 relative to the liquid storage chamber Y;

[0050] The sealing portion 13 is provided with a channel for the liquid transmission channel to perform vertical reciprocating motion. When the liquid transmission channel moves to the lowest point, it can penetrate the sealing portion 13 and reach the liquid storage chamber Y;

[0051] The all-plastic spring 9 is arranged in the air chamber X, one end of which is sleeved on the main column 8 and the other end of which is arranged on the sealing portion 13 .

[0052] In the embodiment of the present application, the pressing head 2 is manually pressed downward, and the outer leaves of the blades 7 and the large beat 6 form a seal on the air chamber; the volume decreases and the pressure increases, so that the inner leaves of the blades 7 and the first sealing position 83 on the main column 8 are opened; the gas flows to the screen member 4, and at the same time the second sealing position 111 on the auxiliary column 11 is opened, the sealing member 12 and the small cylinder 14 form a seal, and the liquid in the small cylinder 14 is pumped out through the auxiliary column 11, flows to the screen member 4 and mixes with the gas to form foam, and is sprayed out of the pump head through the nozzle of the pressing head 2. When the hand releases the pressing head 2, the pressing head 2 rebounds upward under the action of the full plastic spring 9, and the inner leaves of the blades 7 and the main column 8 forms a seal to prevent the liquid from flowing back to the air chamber X; at the same time, the outer piece of the blade 7 and the sealing position of the large blade 6 are opened to replenish gas to the air chamber X. At this time, the small tube 14 and the piston 10 form a vacuum. When the piston 10 moves upward, the second sealing position 111 on the secondary column 11 is sealed, and the sealing position of the sealing member 12 and the small tube 14 is opened to suck the liquid in the bottle; at this time, there is a certain amount of liquid in the small tube 14. When the pressing head 2 is pressed again, the liquid stored in the small tube 14 will rush forward, pass through the screen member 4 and mix with the gas to form foam, and spray out of the pump head through the nozzle of the pressing head 2. The spring provided in the embodiment of the present application is a fully plastic spring 9, which is convenient for recycling plastic products; the fully plastic spring 9 is provided in the air chamber X and does not directly contact the liquid in the foam pump bottle, which can effectively reduce the risk of contamination of the liquid in the bottle.

[0053] In the embodiment of the present application, the button 2 is manually pressed downward, and the big beater 6 moves downward along the inner wall of the small tube 14. The button 2 is released, and the big beater 6 moves upward along the inner wall of the small tube 14. When the big beater 6 performs vertical reciprocating motion in the small tube 14, the big beater 6 is sealed and connected to the inner wall of the small tube 14.

[0054] In the embodiment of the present application, the main column 8, the piston 10, and the auxiliary column 11 together constitute a liquid transmission channel; the piston 10 drives the auxiliary column 11 to complete reciprocating motion in the main column 8; one end of the piston 10 is sealed and connected to the inner wall of the main column 8, and the other end is sealed and connected to the outer wall of the auxiliary column 11. The specific connection method of the main column 8, the piston 10, and the auxiliary column 11 is as follows Figure 2 In addition, the specific connection method of the main column 8, the piston 10, and the auxiliary column 11 can also be: one end of the piston 10 is sealed and connected to the outer wall of the main column 8, and the other end is sealed and connected to the inner wall of the auxiliary column 11; it is sufficient to make the main column 8, the piston 10, and the auxiliary column 11 movably sealed. In addition, the structure of the piston 10 is as shown Fig.14 As shown, one end of the piston 10 is connected to the main column 8, and the other end is connected to the secondary column 11. It should be noted that the structure of the actual piston 10 can be adjusted according to actual needs to allow the main column 8, the piston 10, and the secondary column 11 to be movably sealed.

[0055] In the embodiment of the present application, the flow direction of the liquid in the liquid storage chamber Y is: it flows from the liquid storage chamber Y in sequence through the secondary column 11, the piston 10, the main column 8, the screen member 4, the pressing head 2, and then is sprayed out from the nozzle of the pressing head 2.

[0056] In the embodiment of the present application, the sealing part 13 mainly serves to separate the small tube 14 into an air chamber X and a liquid storage chamber Y which are not connected to each other. When the liquid transmission channel reciprocates on the sealing part 13, the air chamber X and the liquid storage chamber Y are also in a state of being not connected to each other. The specific structure of the sealing part 13 can be designed according to actual needs, and it is only necessary to ensure that the air chamber X and the liquid storage chamber Y are always in a state of being not connected to each other.

[0057] In the embodiment of the present application, a limiting structure or a spring seat is provided on the sealing portion 13. Of course, the sealing portion 13 itself can also be a spring seat. The sealing portion 13 only needs to ensure that the air chamber X and the liquid storage chamber Y are always in a state of being disconnected from each other. Under this structure, it is convenient to sleeve one end of the all-plastic spring 9 on the sealing portion 13, and the other end of the all-plastic spring 9 is sleeved on the main column 8. Under the action of the all-plastic spring 9, all components that need to perform reciprocating motion can operate normally.

[0058] In the present application embodiment, Fig.11 As shown, the structure of the pressing head 2 is no different from that of an ordinary pressing head, and can complete the pressing action. A channel is provided inside to ensure that the liquid in the bottle and / or the foam formed by the liquid in the bottle can be sprayed out from the nozzle.

[0059] In the present application embodiment, Fig.12As shown, one end of the outer cover 3 is connected to the push head 2, and the other end is covered on the outer wall of the small tube 14, playing the role of connection and sealing. Specifically, the outer cover 3 and the push head 2 are sealed together, and the outer cover 3 and the small tube 14 are also sealed together; therefore, the structure of the outer cover 3 can be reasonably set according to the structure of the push head 2 and the structure of the small tube 14.

[0060] In the embodiment of the present application, the function of the screen member 4 is to allow the liquid passing through the screen member 4 to mix with the air to form foam, so the screen member 4 needs to be provided with mesh holes so that foam can be generated when the liquid passes through the screen member 4. The structure of the screen member 4 can be reasonably set according to the fineness of the required foam.

[0061] In the embodiment of the present application, the large flap 6 and the blade 7 together form a switch for opening or closing the air chamber X. When the pressing head 2 is pressed downward, the pressure in the air chamber X increases, and the gas in the air chamber X can form an airflow to flow toward the screen member 4. When the liquid passes through the screen member 4, foam can be generated and sprayed out from the nozzle of the pressing head 2; when the pressing head 2 rebounds upward, the liquid can be prevented from flowing back to the air chamber X.

[0062] In the embodiment of the present application, the sealing member 12 is a spherical structure, and the material of the sealing member 12 can be selected according to actual needs.

[0063] In the embodiment of the present application, the structure of the small tube 14 can be designed according to actual needs, and the small tube 14 only needs to be divided into different air chambers X and liquid storage chambers Y by the sealing portion 13. In actual consideration of factors such as saving materials and production costs, the volume of the side corresponding to the air chamber X can be designed to be as large as possible, so as to facilitate the output of a larger pressure difference, while the volume of the side corresponding to the liquid storage chamber Y can be reduced accordingly.

[0064] In the embodiment of the present application, the all-plastic spring 9 refers to a spring made of plastic; the metal spring is replaced with the all-plastic spring 9, and the all-plastic spring 9 is as follows Fig.13 As shown, the all-plastic spring is larger than the metal spring under the same elastic force, but because the all-plastic spring 9 in the embodiment of the present application is arranged in the air chamber X, the influence of the all-plastic spring 9 on the volume of the air chamber X can be ignored; in addition, the all-plastic spring 9 is not arranged in the liquid transmission channel, so there is no need to increase the diameter and wall thickness of the liquid transmission channel. Under this structure, the foam pump still has the advantages of being light, compact, and easy to transport. Therefore, the foam pump structure provided in the embodiment of the present application is more reasonable and more practical. It should be noted that the structure of the all-plastic spring 9 can also be designed according to actual needs.

[0065] In an optional embodiment, a dust cover 1 is further included, and the dust cover 1 is disposed on the pressing head 2 and is detachably connected to the pressing head 2. The function of the dust cover 1 is to cover the pressing head 2, thereby preventing dust and other pollutants from entering the pressing head 2, and the use effect is good. One structure of the dust cover 1 is as follows Fig.10 As shown, it should be noted that the structure of the dust cover 1 can also be other, as long as it can cover the button 2.

[0066] In an optional embodiment, if Figure 1 As shown, it also includes a straw 15, which is arranged at the bottom of the small tube 14. The straw 15 serves to increase the length of the liquid transmission channel, so as to facilitate pumping out the liquid at the bottom of the bottle body, and the use effect is better.

[0067] In an optional embodiment, if Figure 3 As shown, the screen member 4 is a tubular structure, and one or more screens 41 are arranged inside or on the end of the screen member 4; the screen 41 is perpendicular to the screen member 4. Exemplarily, the number of screens 41 is 1, 2, 3, 4, and 5; the mesh size of the screen 41 is 100 mesh, 200 mesh, 500 mesh, 1000 mesh, 1500 mesh, and 2000 mesh. Specifically, the screen 41 can be evenly arranged along the length direction of the screen member 4; taking the number of screens 41 as 3 as an example, the screens 41 are respectively arranged at the top and bottom of the screen member 4, and at the middle position inside the screen member 4; the liquid passing through the screen member 4 flows through the screen 41 at the bottom end, the screen 41 at the middle position inside the screen member 4, and the screen 41 at the top end in turn, and finally sprays out from the nozzle of the head 2. The screen member 4 is a tubular structure, which is convenient for generating denser foam.

[0068] In an optional embodiment, if Figure 4 As shown, the large beater 6 includes a column 61 and a piston 62; the column 61 is connected to the screen member 4, the piston 62 is provided with a through hole and a fitting portion 621, and the blade 7 is provided in the piston 62 through the fitting portion 621. With the piston 62, the reciprocating motion of the large beater 6 along the inner wall of the small tube 14 is smoother and has a good use effect.

[0069] In an optional embodiment, if Figure 5 As shown, the blade 7 is a tubular structure, with an outer blade 71 disposed on the outer side wall, and an inner blade 72 that can be opened and closed disposed on the inner side wall; one end of the inner blade 72 is fixedly connected to the inner side wall of the blade 7, and the other end is open, and the inner blade 72 is opened and closed by pressing or releasing the inner blade 72, thereby controlling the opening and closing of the inner blade 72, with a simple structure and good use effect. It should be noted that the blade 7 can also be another structure, as long as it can complete the sealing or opening function under the conditions of pressing or releasing.

[0070] In an optional embodiment, if Figure 6-Figure 7As shown, a first limiting component 81 is provided on the outer wall of the main column 8, and a second limiting component 82 is provided on the inner wall; a first sealing position 83 is provided on the first limiting component 81. The function of the first limiting component 81 is to limit the all-plastic spring 9. Specifically, one end of the all-plastic spring 9 is sleeved on the main column 8 and is located above the first limiting component 81, and the other end of the all-plastic spring 9 is provided on the sealing portion 13, which can limit the all-plastic spring 9 from sliding down without reason; the function of the second limiting component 82 is to limit the piston 10 and the sub-column 11, and limit the piston 10 and the sub-column 11 from continuing to move upward. It should be noted that the second limiting component 82 can also be provided on the outer wall of the main column 8. Specifically, refer to the connection relationship between the main column 8 and the piston 10 and the sub-column 11 to set the second limiting component 82. The second limiting component 82 can limit the piston 10 and the sub-column 11 from continuing to move upward. For details, refer to Figure 7 The first sealing position 83 is a sheet-like object that can be opened and closed, and can be sealed or opened under the condition of pressing or releasing. The first sealing position 83 can also be another structure that can be opened and closed, and no further restrictions are made on the specific structure of the first sealing position 83. The structure of the main column 8 is simple and easy to manufacture and assemble.

[0071] In an optional embodiment, if Figure 8 As shown, a second sealing position 111 is provided on the secondary column 11, and a third limiting component 112 is also provided at one end close to the second sealing position 111. The second sealing position 111 is a through hole, and the secondary column 11 is pressed so that the secondary column 11 extends into the liquid storage chamber Y, and the second sealing position 111 is opened. At this time, the liquid in the liquid storage chamber Y flows through the second sealing position 111 and flows into the secondary column 11, and then it can continue to rise and finally spray out of the nozzle of the pressing head 2. The second sealing position 111 is a through hole, which has a simple structure and is easy to manufacture and assemble. In addition, the second sealing position 111 can also be other structures besides the through hole, such as an openable sealing sheet, etc., as long as it can complete its corresponding function like the through hole. In addition, the third limiting component 112 is used to sleeve the piston 10 between the secondary column 11 and the main column 8.

[0072] In an optional embodiment, if Fig. 9As shown, the bottom of the liquid storage chamber Y of the small tube 14 is provided with a through hole 141, and the sealing member 12 is placed in the liquid storage chamber Y and seals the through hole 141; the sealing member 12 is a plastic bead or a glass bead; in order to facilitate the recycling of plastic products, the sealing member 12 can be selected from plastic beads. In addition, the structure of the small tube 14 is designed to be a large upper and small lower structure, and the volume of the air chamber X is relatively large. A support seat for facilitating the installation of the sealing part 13 is also provided in the small tube 14. The structure of the support seat can be reasonably designed according to the structure of the sealing part 13, so as to facilitate the installation of the sealing part 13 and facilitate the separation of the small tube 14 into different air chambers X and liquid storage chambers Y. The sealing member 12 is in the shape of a sphere, has a good sealing effect, and a simple structure. It should be noted that the sealing member 12 can also be a component of another structure, as long as it can complete the sealing and opening actions like the spherical sealing part.

[0073] In some embodiments, such as Figure 1 , Figure 2 As shown, a gasket 5 is provided at the connection position between the outer cover 3 and the small tube 14; the gasket 5 is an annular structure, and the material of the gasket 5 is flexible plastic, which is used to make the connection between the outer cover 3 and the small tube 14 tighter. The material of the gasket 5 can also be selected from other flexible materials, and the selection of flexible plastic is more convenient for recycling of plastic materials. Specific embodiments

[0075] Example 1

[0076] The embodiment provides a foam pump, such as Figure 1 , Figure 2 As shown, it includes a dust cover 1, a button 2, an outer cover 3, a screen 4, a gasket 5, a large racket 6, a blade 7, a main column 8, a full plastic spring 9, a piston 10, a secondary column 11, a sealing member 12, a sealing part 13, a small tube 14, and a straw 15;

[0077] The dust cover 1 is arranged on the pressing head 2 and is threadedly connected with the pressing head 2; the pressing head 2 is sleeved in the outer cover 3, and the outer cover 3 is sleeved on the small tube 14; a gasket 5 is arranged at the connection position between the outer cover 3 and the small tube 14; the gasket 5 is an annular structure, and the material of the gasket 5 is flexible plastic; the screen member 4 is arranged in the pressing head 2, one end of which is connected to the pressing head 2, and the other end is connected to one end of the large beater 6; the other end of the large beater 6 is movably connected to the small tube 14;

[0078] The other end of the large racket 6 is provided with a blade 7, and is connected to one end of the main column 8; the other end of the main column 8 is movably connected to the secondary column 11 through a piston 10; the main column 8, the piston 10, and the secondary column 11 together form a liquid transmission channel; the piston 10 can complete reciprocating motion between the secondary column 11 and the main column 8;

[0079] A sealing member 12 is provided at the bottom of the small tube 14; a sealing portion 13 is provided in the small tube 14, and the sealing portion 13 is provided above the sealing member 12 to separate the small tube 14 into an air chamber X and a liquid storage chamber Y which are not connected to each other; the air chamber X is far away from the sealing member 12 relative to the liquid storage chamber Y;

[0080] The sealing portion 13 is provided with a channel for the liquid transmission channel to perform vertical reciprocating motion. When the liquid transmission channel moves to the lowest point, it can penetrate the sealing portion 13 and reach the liquid storage chamber Y;

[0081] A first limiting component 81 is provided on the outer wall of the main column 8, and a second limiting component 82 is provided on the inner wall; a first sealing position 83 is provided on the first limiting component 81; the first sealing position 83 is a sheet-like object that can be opened and closed; the all-plastic spring 9 is arranged in the air chamber X, one end of which is sleeved on the main column 8 and located above the first limiting component 81; the other end is arranged on the sealing part 13; the straw 15 is arranged at the bottom of the small tube 14;

[0082] The screen member 4 is a tubular structure, on which three screens 41 are arranged; the screens 41 are arranged at the top and bottom of the screen member 4, and at the middle of the screen member 4; the screens 41 and the screen member 4 are perpendicular to each other;

[0083] The large blade 6 includes a column 61 and a piston 62; the column 61 is connected to the screen member 4, the piston 62 is provided with a through hole and a fitting portion 621, and the blade 7 is provided in the piston 62 through the fitting portion 621;

[0084] The blade 7 is a tubular structure, with an outer blade 71 disposed on the outer side wall and an inner blade 72 that can be opened and closed disposed on the inner side wall; one end of the inner blade 72 is fixedly connected to the inner side wall of the blade 7, and the other end is open, and the inner blade 72 is opened and closed by pressing or releasing the inner blade 72, thereby controlling the opening and closing of the inner blade 72;

[0085] A second sealing position 111 is provided on the secondary column 11, and a third limiting component 112 is further provided at one end close to the second sealing position 111; the second sealing position 111 is a through hole;

[0086] A through hole 141 is provided at the bottom of the liquid storage chamber Y of the small tube 14, and the sealing member 12 is placed in the liquid storage chamber Y and seals the through hole 141; the sealing member 12 is a plastic bead; a support seat for facilitating the installation of the sealing portion 13 is also provided in the small tube 14.

[0087] In the embodiment of the present application, the assembly diagram of component 1 is as follows Fig.15 As shown, according to Fig.15, assemble component 1. Component 1 is composed of a screen element 4, a large beater 6, blades 7, a main column 8, a fully plastic spring 9, a piston 10, a secondary column 11, and a sealing portion 13; take a small tube 14, and place a sealing member 12 at the bottom of the small tube 14; through the large beater 6 component 1, it will be installed on the inner wall of the upper part of the small tube 14, so that the large beater 6 can move up and down under the sealing assembly of the small tube 14; the piston 10 can also move up and down under the sealing assembly between the main column 8 and the secondary column 11; then seal the outer cover 3 on the outer wall at the top of the small tube 14 to complete the sealing installation; finally, install the head 2 on the outer cover 3 to complete the sealing installation between the head 2 and the outer cover 3. Only one assembly method of the foam pump of the embodiment of the present application is given here. Specifically, the assembly of the foam pump of the embodiment of the present application can also be assembled in other ways, and it can be used normally after successful assembly.

[0088] In the embodiment of the present application, the pressing head 2 is manually pressed downward, and the outer leaves of the blades 7 and the large beat 6 form a seal on the air chamber; the volume decreases and the pressure increases, so that the inner leaves of the blades 7 and the first sealing position 83 on the main column 8 are opened; the gas flows to the screen member 4, and at the same time the second sealing position 111 on the auxiliary column 11 is opened, the sealing member 12 and the small cylinder 14 form a seal, and the liquid in the small cylinder 14 is pumped out through the auxiliary column 11, flows to the screen member 4 and mixes with the gas to form foam, and is sprayed out of the pump head through the nozzle of the pressing head 2. When the hand releases the pressing head 2, the pressing head 2 rebounds upward under the action of the full plastic spring 9, and the inner leaves of the blades 7 and the main column 8 forms a seal to prevent the liquid from flowing back to the air chamber X; at the same time, the outer piece of the blade 7 and the sealing position of the large blade 6 are opened to replenish gas to the air chamber X. At this time, the small tube 14 and the piston 10 form a vacuum. When the piston 10 moves upward, the second sealing position 111 on the secondary column 11 is sealed, and the sealing position of the sealing member 12 and the small tube 14 is opened to suck the liquid in the bottle; at this time, there is a certain amount of liquid in the small tube 14. When the pressing head 2 is pressed again, the liquid stored in the small tube 14 will rush forward, pass through the screen member 4 and mix with the gas to form foam, and spray out of the pump head through the nozzle of the pressing head 2. The spring provided in the embodiment of the present application is a fully plastic spring 9, which is convenient for recycling plastic products; the fully plastic spring 9 is provided in the air chamber X and does not directly contact the liquid in the foam pump bottle, which can effectively reduce the risk of contamination of the liquid in the bottle.

[0089] In summary, the foam pump of the embodiment of the present application is provided with a fully plastic spring 9, which is convenient for recycling plastic products; the fully plastic spring 9 is arranged in the air chamber X and does not directly contact the liquid in the foam pump bottle, which can effectively reduce the risk of contamination of the liquid in the bottle.

[0090] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The orientation words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0091] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this application refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0092] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0093] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A foam pump, characterized in that: It includes a push head (2), an outer cover (3), a screen (4), a large racket (6), blades (7), a main column (8), a full plastic spring (9), a piston (10), a secondary column (11), a sealing component (12), a sealing part (13), and a small cylinder (14); The pressing head (2) is sleeved in the outer cover (3), and the outer cover (3) is sleeved on the small tube (14); the screen member (4) is arranged in the pressing head (2), one end of which is connected to the pressing head (2), and the other end of which is connected to one end of the large racket (6); the other end of the large racket (6) is movably connected in the small tube (14); The other end of the large racket (6) is provided with a blade (7) and is connected to one end of a main column (8); the other end of the main column (8) is movably connected to a secondary column (11) via a piston (10); the main column (8), the piston (10) and the secondary column (11) together form a liquid transmission channel; A sealing member (12) is arranged at the bottom of the small tube (14); a sealing portion (13) is arranged in the small tube (14), and the sealing portion (13) is arranged above the sealing member (12) to separate the small tube (14) into an air chamber (X) and a liquid storage chamber (Y) which are not connected to each other; the air chamber (X) is farther away from the sealing member (12) than the liquid storage chamber (Y); The sealing portion (13) is provided with a channel for the liquid transmission channel to perform vertical reciprocating motion, and when the liquid transmission channel moves to the lowest point, it can penetrate the sealing portion (13) and reach the liquid storage chamber (Y); The all-plastic spring (9) is arranged in the air chamber (X), one end of which is sleeved on the main column (8) and the other end of which is arranged on the sealing portion (13).

2. The foam pump according to claim 1, characterized in that: It also comprises a dust cover (1), wherein the dust cover (1) is arranged on the pressing head (2) and is detachably connected to the pressing head (2).

3. The foam pump according to claim 1, characterized in that: It also comprises a straw (15), wherein the straw (15) is arranged at the bottom of the small tube (14).

4. The foam pump according to claim 1, characterized in that: The screen member (4) is a tubular structure, and one or more screens (41) are arranged inside or at the end of the screen member (4); the screens (41) and the screen member (4) are perpendicular to each other.

5. The foam pump according to claim 1, characterized in that: The large racket (6) comprises a column portion (61) and a piston portion (62); the column portion (61) is connected to the screen member (4); a through hole is provided in the piston portion (62), and a fitting portion (621) is provided therein; the blade (7) is arranged in the piston portion (62) via the fitting portion (621).

6. The foam pump according to claim 1, characterized in that: The blade (7) is a tubular structure, with an outer blade (71) provided on the outer side wall and an inner blade (72) that can be opened and closed provided on the inner side wall.

7. The foam pump according to claim 1, characterized in that: A first limiting component (81) is provided on the outer side wall of the main column (8), and a second limiting component (82) is provided on the inner side wall; a first sealing position (83) is provided on the first limiting component (81).

8. The foam pump according to claim 1, characterized in that: The secondary column (11) is provided with a second sealing position (111), and a third limiting component (112) is also provided at one end close to the second sealing position (111).

9. The foam pump according to claim 1, characterized in that: A through hole (141) is provided at the bottom of the liquid storage chamber (Y) of the small tube (14), and the sealing member (12) is placed in the liquid storage chamber (Y) and seals the through hole (141); the sealing member (12) is a plastic bead or a glass bead.

10. The foam pump according to claim 1, characterized in that: A gasket (5) is provided at the connection position between the outer cover (3) and the small tube (14).

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