A plastic foam pump and method of using same

Abstract

The present application relates to a kind of all-plastic foam pump, belong to foam pump technical field.It includes the cap of bottle mouth thread connection by internal thread;Head, slidingly covers the top of the outer wall of cap, the inside of the head is equipped with the delivery channel and the foam channel of communication;Net, fixedly connected in the inside of delivery channel and with its inner wall is in conformity with;It also discloses the use method.The present application is designed between fixed plate and movable plate elastic plastic hose, using the block of gas, can not need to use piston, also can guarantee the guided flow of gas;While using the certain resilience of elastic plastic hose itself and cooperate foam column in the buoyancy of filling liquid, can make movable plate effective reset, in addition to reduce the friction between movable plate and cylinder, make its reset effect more stable;Compared with traditional metal spring or plastic spring alone, not only more conducive to recovery, also can meet normal use demand.

Description

Technical Field

[0001] This invention belongs to the field of foam pump technology, and relates to an all-plastic foam pump and its usage method. Background Technology

[0002] With the continuous development of society, various cleaning and skin care products and other daily necessities have appeared in people's daily lives. People are also paying more and more attention to their own hygiene and health. Therefore, in order to keep their bodies clean, they are accustomed to using some cleaning liquids when washing their hands, face, or taking a bath. To meet people's needs, a large number of facial cleansers, hand soaps, shower gels, and other cleaning liquids have appeared on the market. For ease of use, these liquids are generally placed in sealed containers, and people squeeze out the liquid from the container by pressing the pump. These cleaning products have been widely used in people's daily lives.

[0003] Traditional all-plastic foam pumps mostly use metal springs as the reset component. While metal springs offer strong restoring force and good stability, when the foam pump is no longer needed and requires recycling, the fact that the entire pump, except for the metal spring, is made of plastic means that the metal spring must be removed before the other materials can be recycled and disassembled. This complicates the recycling process, increases working time, and reduces efficiency. Currently, some designs replace the traditional metal spring with plastic springs, such as the all-plastic external foam pump disclosed in patent document CN 216835118 U. Although using plastic springs facilitates the later recycling of the entire pump body, the elasticity of plastic springs is not stable enough, and the rebound effect is poor. Combined with the dual friction between the large and small pistons, plastic springs cannot meet normal usage requirements. Therefore, we propose an all-plastic foam pump and its usage method to solve the aforementioned problems. Summary of the Invention

[0004] In view of this, in order to solve the problem that traditional metal springs are not conducive to the recycling of pump bodies, but plastic springs cannot meet the stability and rebound force requirements of normal use, the present invention provides an all-plastic foam pump and its usage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including:

[0006] A cap that connects to the bottle neck thread via an internal thread;

[0007] The pusher head is slidably fitted onto the top of the outer wall of the cap, and the pusher head has a connected conveying channel and a foam discharge channel inside;

[0008] The network connector is fixedly connected inside the conveying channel and fits against its inner wall;

[0009] The connecting seat is slidably disposed on the inner wall of the top opening of the cap and connected to the bottom of the push head. The connecting seat has openings at the top and bottom, and the bottom end of the network extends into the top opening of the connecting seat.

[0010] A valve stem is inserted into the bottom of the connecting seat. The valve stem has an infusion channel inside, and the top of the infusion channel is connected to the network. The bottom of the infusion channel is equipped with a one-way inlet valve.

[0011] The cylinder has its top end fixedly connected to the top wall of the cap, and its bottom end extends downward and is fixedly connected to a liquid storage pipe. The bottom end of the valve stem extends into the liquid storage pipe and is fixedly connected to a piston seat that slides against the inner wall of the liquid storage pipe. The cylinder is equipped with an air supply mechanism for gas delivery and liquid mixing. The bottom of the cylinder is equipped with multiple reset mechanisms. The reset mechanisms work in conjunction with the air supply mechanism and are also used for the overall reset of the valve stem and the push head.

[0012] An infusion tube is fixedly connected to the bottom end of a storage tube, and a sealing ball is provided at the connection port between the infusion tube and the storage tube;

[0013] The inlet hose is fixedly connected to the bottom end of the infusion tube and is used for the entry of liquid.

[0014] Furthermore, a connector is fixedly connected through the upper opening of the connector body. The top of the connector is provided with an upper interface, and the bottom of the connector is provided with a lower interface that communicates with the upper interface. The top of the valve stem passes through the lower opening of the connector body and is inserted into the lower interface. The infusion channel is connected to the network through the upper interface.

[0015] Furthermore, the air supply mechanism includes a fixed plate fixedly connected to the top of the inner wall of the cylinder, the bottom of the connecting seat is fitted through the fixed plate, a movable plate located below the fixed plate is fixedly sleeved on the outer wall of the valve stem, a gap is left between the side of the movable plate and the inner wall of the cylinder, the same elastic plastic hose is fixedly connected between the bottom of the fixed plate and the top of the movable plate, the top of the movable plate has a plurality of air guide holes located inside the elastic plastic hose in a ring shape, the lower opening of the connecting seat is provided with a one-way air outlet valve, the outer wall of the connector has a plurality of air outlet holes communicating with the upper interface in a ring shape, the side wall of the cylinder has a plurality of air inlet holes in a ring shape, and the air inlet holes are located above the movable plate and are provided with a one-way air inlet valve.

[0016] Furthermore, a frustum-shaped air guide pipe is fixedly connected to the bottom end of the connector, and an air supply channel is formed between the frustum-shaped air guide pipe, the outer wall of the connector, and the inner wall of the connector body.

[0017] Furthermore, the reset mechanism includes a hollow rod that is fixedly connected to the bottom of the cylinder. Multiple fixed rods are fixedly connected to the bottom of the movable plate in a ring shape. The bottom end of the fixed rod passes through the top end of the hollow rod and is fixedly connected to a foam column. The top end of the foam column abuts against the top wall of the hollow rod. The interior of the hollow rod is filled with a filling liquid, and the density of the filling liquid is greater than the density of the foam column.

[0018] Furthermore, the bottom of the fixed plate is fixedly connected to an inner fixing ring located inside the elastic plastic hose. The bottom of the inner fixing ring is in contact with the top of the movable plate, and the air guide hole is located inside the inner fixing ring. An outer sliding ring is slidably sleeved on the outer wall of the inner fixing ring, and the bottom of the outer sliding ring is fixedly connected to the top of the movable plate.

[0019] Furthermore, the bottom of the fixing plate is fixedly connected to an outer fixing ring located between the elastic plastic hose and the inner fixing ring, and the outer wall of the outer fixing ring is in contact with the inner side of the elastic plastic hose. The inner wall of the outer fixing ring is slidably connected to an inner sliding ring, and the bottom of the inner sliding ring is fixedly connected to the top of the movable plate.

[0020] Furthermore, the sidewall of the movable plate is provided with a plurality of ball bearings in a ring shape, and the ball bearings are in rolling contact with the inner wall of the cylinder.

[0021] Furthermore, the ball bearing is made of hard plastic.

[0022] A method for using an all-plastic foam pump includes the following steps:

[0023] S1. First, connect the entire pump body to the mouth of the storage bottle through the internal thread, and then insert the cylinder, hollow rod and inlet hose into the storage bottle to complete the installation between the pump body and the bottle.

[0024] S2. When in use, press down on the push-button. The push-button moves the network connector, connecting seat, and valve stem downward. The valve stem moves the piston seat downward and causes the liquid in the storage tube to enter the upper interface from the infusion channel. At the same time, the valve stem also moves the movable plate downward to compress the air below. The gas enters the upper interface from the air guide hole, through the air supply channel and the air outlet hole, and mixes with the liquid to produce foam. Finally, the foam diffuses through the network connector and is squeezed out from the foam outlet channel through the conveying channel.

[0025] S3. After squeezing, release the pusher. The buoyancy of the foam column in the filling liquid will drive the movable plate to move upward and reset, and drive the valve stem, connecting seat and pusher to reset upward. The liquid in the bottle will then enter the storage tube again from the inlet hose and delivery tube for replenishment. When the movable plate moves upward, the outside gas enters the cylinder from the air inlet hole for the next use.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention utilizes a flexible plastic hose designed between the fixed plate and the movable plate to block gas flow, ensuring proper gas guidance and mixing with the liquid even without a piston. Simultaneously, the hose's inherent resilience, combined with the buoyancy of the foam column within the filling liquid, effectively resets the movable plate. Furthermore, reduced friction between the movable plate and the cylinder further enhances the stability of the reset process. Compared to traditional metal springs or the use of a single plastic spring, this invention is not only easier to recycle but also meets normal usage requirements.

[0028] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a perspective view of the overall structure of an all-plastic foam pump according to the present invention;

[0031] Figure 2 This is a front view of the overall structure of an all-plastic foam pump according to the present invention;

[0032] Figure 3 This is a front sectional view of the overall structure of an all-plastic foam pump according to the present invention;

[0033] Figure 4 This invention relates to an all-plastic foam pump. Figure 3 A further sectional view of the overall structure;

[0034] Figure 5 This invention relates to an all-plastic foam pump. Figure 4 A schematic diagram of a partial structure;

[0035] Figure 6 This invention relates to an all-plastic foam pump. Figure 5 A schematic diagram of a partial structure;

[0036] Figure 7 This is a perspective view of the connection structure between the fixed plate and the movable plate of an all-plastic foam pump according to the present invention;

[0037] Figure 8 This is a perspective view of the connection structure between the movable plate and the elastic plastic hose of an all-plastic foam pump according to the present invention;

[0038] Figure 9 This invention relates to an all-plastic foam pump. Figure 7 Exploded view of the overall structure.

[0039] Reference numerals: 1. Cap; 2. Push-button; 3. Conveying channel; 4. Network; 5. Internal thread; 6. Cylinder; 7. Foam outlet channel; 8. Connecting seat; 9. Fixing plate; 10. Connecting head; 11. Upper interface; 12. Movable plate; 13. Lower interface; 14. Valve stem; 15. Flexible plastic hose; 16. Air guide hole; 17. One-way air outlet valve; 18. Air supply channel; 19. Air outlet; 20. Circular 21. Air inlet duct; 22. One-way air inlet valve; 23. Infusion channel; 24. Liquid storage tube; 25. Fixing rod; 26. Hollow rod; 27. Foam column; 28. Filling liquid; 29. ​​One-way liquid inlet valve; 30. Piston seat; 31. Infusion tube; 32. Sealing ball; 33. Inlet hose; 34. Inner fixing ring; 35. Outer slip ring; 36. Inner slip ring; 37. Outer fixing ring; 38. Ball bearing. Detailed Implementation

[0040] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0042] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0043] Example 1

[0044] like Figures 1-4 As shown, an all-plastic foam pump includes a cap 1, a pusher 2, a delivery channel 3, a mesh 4, an internal thread 5, a cylinder 6, a foam outlet channel 7, a connecting seat 8, a valve stem 14, a liquid storage pipe 24, a one-way inlet valve 29, a piston seat 30, a delivery pipe 31, a sealing ball 32, and an inlet hose 33. The cap 1 is threaded to the bottle neck via the internal thread 5. The pusher 2 is slidably fitted onto the top of the outer wall of the cap 1. The delivery channel 3 and the foam outlet channel 7 are located inside the pusher 2 and are connected. The mesh 4 is fixedly connected to the inside of the delivery channel 3 and fits against its inner wall. The connecting seat 8 is slidably located on the inner wall of the top opening of the cap 1 and is connected to the bottom of the pusher 2. The connecting seat 8 has openings at the top and bottom, and the bottom end of the mesh 4 extends into the top opening of the connecting seat 8. The valve stem 14 is inserted into the connecting seat. At the bottom of body 8, infusion channel 23 is located inside valve stem 14, and the top of infusion channel 23 is connected to network 4. One-way inlet valve 29 is provided at the bottom of infusion channel 23. The top of cylinder 6 is fixedly connected to the top wall of cap 1, and its bottom extends downward. Storage tube 24 is fixedly connected to the bottom of cylinder 6 and connected to it. The bottom of valve stem 14 extends into storage tube 24. Piston seat 30 is fixedly connected to the bottom of valve stem 14 and slides against the inner wall of storage tube 24. Infusion tube 31 is fixedly connected to the bottom of storage tube 24. Sealing ball 32 is provided at the connection between infusion tube 31 and storage tube 24 for sealing the connection. It works with one-way inlet valve 29 to achieve one-way flow of liquid. Inlet hose 33 is fixedly connected to the bottom of infusion tube 31 for liquid entry.

[0045] like Figure 5 As shown, in this invention, a connector 10 is fixedly connected to the upper opening of the connector body 8. The top of the connector 10 is provided with an upper interface 11, and the bottom of the connector 10 is provided with a lower interface 13 communicating with the upper interface 11. The top end of the valve stem 14 passes through the lower opening of the connector body 8 and is inserted into the lower interface 13. The infusion channel 23 communicates with the network 4 through the upper interface 11. The connector 10 facilitates the connection of the valve stem 14. On the one hand, while the valve stem 14 is reset upward, the connector 10 can drive the connector body 8 to move upward, thereby driving the push head 2 to reset upward. On the other hand, the liquid flows from the infusion channel 23 into the upper interface 11, reacts with the gas in the upper interface 11, forms foam, and then diffuses through the network 4.

[0046] like Figures 4-5As shown, the all-plastic foam pump also includes an air supply mechanism inside the cylinder 6 for gas delivery and liquid mixing. The air supply mechanism includes a fixed plate 9 fixedly connected to the top of the inner wall of the cylinder 6. The bottom of the connecting seat 8 is fitted through the fixed plate 9. The outer wall of the valve stem 14 is fixedly fitted with a movable plate 12 located below the fixed plate 9. A gap is left between the side of the movable plate 12 and the inner wall of the cylinder 6. The bottom of the fixed plate 9 and the top of the movable plate 12 are fixedly connected to the same elastic plastic hose 15. The top of the movable plate 12 is provided with multiple air guide holes 16 located inside the elastic plastic hose 15 in an annular shape. The lower opening of the connecting seat 8 is provided with a one-way air outlet valve 17. The outer wall of the connector 10 is provided with multiple air outlet holes 19 communicating with the upper interface 11 in an annular shape. The side wall of the cylinder 6 is provided with multiple air inlets 21 in an annular shape. The air inlets 21 are located above the movable plate 12 and are provided with a one-way air inlet valve 22. When the push-down head 2 is pressed down, it moves the network connector 4 and the connecting seat 8 downwards, and simultaneously moves the valve stem 14 downwards via the connecting head 10. The valve stem 14 then moves the movable plate 12 downwards, gradually stretching the elastic plastic hose 15. At this time, a small portion of the gas below the movable plate 12 will flow upwards through the gap between the movable plate 12 and the inner wall of the cylinder 6. The gap is designed to avoid friction between the movable plate 12 and the inner wall of the cylinder 6, reducing the restoring force required for upward reset, thus allowing for better reset later. However, the gas will be affected by the elastic plastic hose. The obstruction of the hose 15 causes most of the gas to flow into the interior of the elastic plastic hose 15 through the air guide hole 16. At the same time, the gas enters the connecting seat 8 through the one-way air outlet valve 17 and enters the upper interface 11 through the air outlet hole 19. Meanwhile, the valve stem 14 moves downward, causing the piston seat 30 to move downward. The liquid in the liquid storage tube 24 enters the delivery channel 23 through the one-way liquid inlet valve 29 and enters the upper interface 11 to mix with the gas to form foam. Finally, it diffuses through the network 4 into the delivery channel 3 and flows out from the foam outlet channel 7, completing the squeezing foaming operation.

[0047] like Figure 5 , Figure 9As shown, the all-plastic foam pump also includes multiple reset mechanisms located at the bottom of the cylinder 6. These reset mechanisms can be arranged in a ring at equal intervals. The reset mechanisms work in conjunction with the air supply mechanism and are also used for the overall reset of the valve stem 14 and the push head 2. The reset mechanism includes a hollow rod 26 that is fixedly connected to the bottom of the cylinder 6. Multiple fixing rods 25 are fixedly connected to the bottom of the movable plate 12 in a ring. The bottom end of the fixing rod 25 passes through the top end of the hollow rod 26 and is fixedly connected to a foam column 27. The top end of the foam column 27 abuts against the top wall of the hollow rod 26. The hollow rod 26 is filled with a filling liquid 28, and the density of the filling liquid 28 is greater than the density of the foam column 27. A filling liquid 28 is injected into the hollow rod 26, creating buoyancy on the foam column 27 and providing an upward thrust to the fixed rod 25. The density of the filling liquid 28 only needs to be greater than that of the foam column 27; ordinary water is sufficient. To achieve greater buoyancy, alkaline substances such as sodium chloride or water-soluble substances can be added to the water to increase its density. When the push head 2 is pressed down, it moves the valve rod 14 downward, which in turn moves the movable plate 12 downward. Simultaneously, the fixed rod 25 pushes the foam column 27 downward within the filling liquid 28. When the push head 2 is released, the buoyancy of the foam column 27 pushes the fixed rod 25 upward, which in turn moves the movable plate 12 upward, ultimately causing the valve rod 14 and push head 2 to return to their original position. This buoyancy-based reset achieves the reset effect without the use of a spring, making it more environmentally friendly and easier to recycle than a spring, and providing better and more stable reset performance than ordinary plastic springs.

[0048] Example 2

[0049] This embodiment is a further improvement on the previous embodiment: such as Figures 1-4As shown, an all-plastic foam pump includes a cap 1, a pusher 2, a delivery channel 3, a mesh 4, an internal thread 5, a cylinder 6, a foam outlet channel 7, a connecting seat 8, a valve stem 14, a liquid storage pipe 24, a one-way inlet valve 29, a piston seat 30, a delivery pipe 31, a sealing ball 32, and an inlet hose 33. The cap 1 is threaded to the bottle neck via the internal thread 5. The pusher 2 is slidably fitted onto the top of the outer wall of the cap 1. The delivery channel 3 and the foam outlet channel 7 are located inside the pusher 2 and are connected. The mesh 4 is fixedly connected to the inside of the delivery channel 3 and fits against its inner wall. The connecting seat 8 is slidably located on the inner wall of the top opening of the cap 1 and is connected to the bottom of the pusher 2. The connecting seat 8 has openings at the top and bottom, and the bottom end of the mesh 4 extends into the top opening of the connecting seat 8. The valve stem 14 is inserted into the connecting seat. At the bottom of body 8, infusion channel 23 is located inside valve stem 14, and the top of infusion channel 23 is connected to network 4. One-way inlet valve 29 is provided at the bottom of infusion channel 23. The top of cylinder 6 is fixedly connected to the top wall of cap 1, and its bottom extends downward. Storage tube 24 is fixedly connected to the bottom of cylinder 6 and connected to it. The bottom of valve stem 14 extends into storage tube 24. Piston seat 30 is fixedly connected to the bottom of valve stem 14 and slides against the inner wall of storage tube 24. Infusion tube 31 is fixedly connected to the bottom of storage tube 24. Sealing ball 32 is provided at the connection between infusion tube 31 and storage tube 24 for sealing the connection. It works with one-way inlet valve 29 to achieve one-way flow of liquid. Inlet hose 33 is fixedly connected to the bottom of infusion tube 31 for liquid entry.

[0050] like Figure 5 As shown, in this invention, a connector 10 is fixedly connected to the upper opening of the connector body 8. The top of the connector 10 is provided with an upper interface 11, and the bottom of the connector 10 is provided with a lower interface 13 communicating with the upper interface 11. The top end of the valve stem 14 passes through the lower opening of the connector body 8 and is inserted into the lower interface 13. The infusion channel 23 communicates with the network 4 through the upper interface 11. The connector 10 facilitates the connection of the valve stem 14. On the one hand, while the valve stem 14 is reset upward, the connector 10 can drive the connector body 8 to move upward, thereby driving the push head 2 to reset upward. On the other hand, the liquid flows from the infusion channel 23 into the upper interface 11, reacts with the gas in the upper interface 11, forms foam, and then diffuses through the network 4.

[0051] like Figures 4-5As shown, the all-plastic foam pump also includes an air supply mechanism inside the cylinder 6 for gas delivery and liquid mixing. The air supply mechanism includes a fixed plate 9 fixedly connected to the top of the inner wall of the cylinder 6. The bottom of the connecting seat 8 is fitted through the fixed plate 9. The outer wall of the valve stem 14 is fixedly fitted with a movable plate 12 located below the fixed plate 9. A gap is left between the side of the movable plate 12 and the inner wall of the cylinder 6. The bottom of the fixed plate 9 and the top of the movable plate 12 are fixedly connected to the same elastic plastic hose 15. The top of the movable plate 12 is provided with multiple air guide holes 16 located inside the elastic plastic hose 15 in an annular shape. The lower opening of the connecting seat 8 is provided with a one-way air outlet valve 17. The outer wall of the connector 10 is provided with multiple air outlet holes 19 communicating with the upper interface 11 in an annular shape. The side wall of the cylinder 6 is provided with multiple air inlets 21 in an annular shape. The air inlets 21 are located above the movable plate 12 and are provided with a one-way air inlet valve 22. When the push-down head 2 is pressed down, it moves the network connector 4 and the connecting seat 8 downwards, and simultaneously moves the valve stem 14 downwards via the connecting head 10. The valve stem 14 then moves the movable plate 12 downwards, gradually stretching the elastic plastic hose 15. At this time, a small portion of the gas below the movable plate 12 will flow upwards through the gap between the movable plate 12 and the inner wall of the cylinder 6. The gap is designed to avoid friction between the movable plate 12 and the inner wall of the cylinder 6, reducing the restoring force required for upward reset, thus allowing for better reset later. However, the gas will be affected by the elastic plastic hose. The obstruction of the hose 15 causes most of the gas to flow into the interior of the elastic plastic hose 15 through the air guide hole 16. At the same time, the gas enters the connecting seat 8 through the one-way air outlet valve 17 and enters the upper interface 11 through the air outlet hole 19. Meanwhile, the valve stem 14 moves downward, causing the piston seat 30 to move downward. The liquid in the liquid storage tube 24 enters the delivery channel 23 through the one-way liquid inlet valve 29 and enters the upper interface 11 to mix with the gas to form foam. Finally, it diffuses through the network 4 into the delivery channel 3 and flows out from the foam outlet channel 7, completing the squeezing foaming operation.

[0052] like Figure 5 As shown, in this invention, a frustum-shaped air guide pipe 20 is fixedly connected to the bottom end of the connector 10, and an air supply channel 18 is formed between the frustum-shaped air guide pipe 20, the outer wall of the connector 10, and the inner wall of the connector base 8. The frustum-shaped air guide pipe 20, when used, allows for better guidance and delivery of gas through the air supply channel 18 formed between it, the outer wall of the connector 10, and the inner wall of the connector base 8. This prevents the gas from being blocked by the bottom of the connector 10, causing backflow and collision between gases, thus affecting the smoothness of gas delivery.

[0053] like Figure 6 , Figure 8As shown, in this invention, the bottom of the fixed plate 9 is fixedly connected to an inner fixed ring 34 located inside the elastic plastic hose 15. The bottom of the inner fixed ring 34 is in contact with the top of the movable plate 12, and the air guide hole 16 is located inside the inner fixed ring 34. An outer sliding ring 35 is slidably sleeved on the outer wall of the inner fixed ring 34, and the bottom of the outer sliding ring 35 is fixedly connected to the top of the movable plate 12. When the valve stem 14 moves downward, causing the movable plate 12 to move downward, it can drive the outer sliding ring 35 to move downward and slide against the outer wall of the inner fixed ring 34. The inner fixed ring 34 and the outer sliding ring 35 can reduce the air intake space inside the elastic plastic hose 15. That is, when the movable plate 12 moves downward and compresses the air below, the air below enters the inner side of the inner fixed ring 34 and the outer sliding ring 35 from the air guide hole 16. By reducing the air intake space inside the elastic plastic hose 15, the compressed air can smoothly enter the connecting seat 8.

[0054] like Figure 6 , Figure 8 As shown, in this invention, the bottom of the fixing plate 9 is fixedly connected to an outer fixing ring 37 located between the elastic plastic hose 15 and the inner fixing ring 34, and the outer wall of the outer fixing ring 37 is in contact with the inner side of the elastic plastic hose 15. The inner wall of the outer fixing ring 37 is slidably connected to an inner sliding ring 36, and the bottom of the inner sliding ring 36 is fixedly connected to the top of the movable plate 12. When the valve stem 14 moves downward, it drives the movable plate 12 to move downward, and at the same time, it drives the inner slip ring 36 to move downward and slide against the inner wall of the outer fixed ring 37. The outer fixed ring 37 and the inner slip ring 36 can support the elastic plastic hose 15. That is to say, when the movable plate 12 moves downward and stretches the elastic plastic hose 15, the gas will enter the outer side of the elastic plastic hose 15 from the gap between the movable plate 12 and the inner wall of the cylinder 6. At this time, the support can prevent the elastic plastic hose 15 from deforming under air pressure, thereby reducing the amount of gas entering, so that most of the gas can enter the air supply channel 18 upward through the air guide hole 16.

[0055] like Figure 3 , Figure 8 As shown, in this invention, the sidewall of the movable plate 12 is annularly embedded with a plurality of balls 38, and the balls 38 are in rolling contact with the inner wall of the cylinder 6. The balls 38 can further improve the stability of the movable plate 12 in its up-and-down movement.

[0056] like Figure 8 As shown, in this invention, the ball bearing 38 is made of hard plastic. Using plastic for the ball bearing 38 facilitates later overall recycling without the need for disassembly. The hard plastic ball bearing 38 allows for stable rolling movement against the inner wall of the cylinder 6.

[0057] like Figure 5 , Figure 9As shown, the all-plastic foam pump also includes multiple reset mechanisms located at the bottom of the cylinder 6. These reset mechanisms can be arranged in a ring at equal intervals. The reset mechanisms work in conjunction with the air supply mechanism and are also used for the overall reset of the valve stem 14 and the push head 2. The reset mechanism includes a hollow rod 26 that is fixedly connected to the bottom of the cylinder 6. Multiple fixing rods 25 are fixedly connected to the bottom of the movable plate 12 in a ring. The bottom end of the fixing rod 25 passes through the top end of the hollow rod 26 and is fixedly connected to a foam column 27. The top end of the foam column 27 abuts against the top wall of the hollow rod 26. The hollow rod 26 is filled with a filling liquid 28, and the density of the filling liquid 28 is greater than the density of the foam column 27. A filling liquid 28 is injected into the hollow rod 26, creating buoyancy on the foam column 27 and providing an upward thrust to the fixed rod 25. The density of the filling liquid 28 only needs to be greater than that of the foam column 27; ordinary water is sufficient. To achieve greater buoyancy, alkaline substances such as sodium chloride or water-soluble substances can be added to the water to increase its density. When the push head 2 is pressed down, it moves the valve rod 14 downward, which in turn moves the movable plate 12 downward. Simultaneously, the fixed rod 25 pushes the foam column 27 downward within the filling liquid 28. When the push head 2 is released, the buoyancy of the foam column 27 pushes the fixed rod 25 upward, which in turn moves the movable plate 12 upward, ultimately causing the valve rod 14 and push head 2 to return to their original position. This buoyancy-based reset achieves the reset effect without the use of a spring, making it more environmentally friendly and easier to recycle than a spring, and providing better and more stable reset performance than ordinary plastic springs.

[0058] A method for using an all-plastic foam pump includes the following steps:

[0059] S1. First, connect the entire pump body to the bottle mouth of the storage bottle through the internal thread 5, and insert the cylinder 6, hollow rod 26 and liquid inlet hose 33 into the storage bottle to complete the installation between the pump body and the bottle body.

[0060] S2. When in use, press down on the push-button 2. The push-button 2 drives the network 4, the connecting seat 8, and the valve stem 14 to move downward. The valve stem 14 drives the piston seat 30 to slide downward, and the liquid in the storage tube 24 enters the upper interface 11 from the infusion channel 23. At the same time, the valve stem 14 also drives the movable plate 12 to move downward to compress the air below, so that the gas enters the upper interface 11 from the air guide hole 16 through the air supply channel 18 and the air outlet hole 19, and mixes with the liquid to produce foam. Finally, the foam diffuses through the network 4 and is squeezed out from the foam outlet channel 7 through the conveying channel 3.

[0061] S3. After squeezing, release the pusher 2. The buoyancy of the foam column 27 in the filling liquid 28 drives the movable plate 12 to move upward and reset, which in turn drives the valve stem 14, the connecting seat 8 and the pusher 2 to reset upward. The liquid in the bottle enters the storage tube 24 again from the inlet hose 33 and the delivery tube 31 for replenishment. When the movable plate 12 moves upward, the outside gas enters the cylinder 6 from the air inlet 21 for the next use.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An all-plastic foam pump characterized by, Include: The cap (1) is connected with the bottle mouth thread by the internal thread (5); The head (2) is slidably sleeved on the top of the outer wall of the cap (1), the inside of the head (2) is provided with a delivery channel (3) and a foam outlet channel (7) in communication; The net channel (4) is fixedly connected in the inside of the delivery channel (3) and is attached to the inner wall thereof; The connecting seat body (8) is slidably arranged in the top inner wall of the cap (1) and is connected with the bottom of the head (2), the connecting seat body (8) is open at the top and bottom, and the bottom end of the net channel (4) extends into the top opening of the connecting seat body (8); The valve rod (14) is inserted into the bottom of the connecting seat body (8), the inside of the valve rod (14) is provided with a liquid delivery channel (23), the top end of the liquid delivery channel (23) is communicated with the net channel (4), and the bottom end of the liquid delivery channel (23) is provided with a one-way liquid inlet valve (29); The cylinder (6) is fixedly connected at the top end to the top wall of the cap (1), the bottom end extends downward and is fixedly connected with a communicated liquid storage tube (24), the bottom end of the valve rod (14) extends into the liquid storage tube (24) and is fixedly connected with a piston seat (30) which is slidably attached to the inner wall of the liquid storage tube (24), the cylinder (6) is provided with a gas delivery mechanism for gas delivery and liquid mixing, the bottom of the cylinder (6) is provided with a plurality of reset mechanisms which are used in cooperation with the gas delivery mechanism and are used for the overall reset of the valve rod (14) and the head (2); The liquid delivery tube (31) is fixedly communicated with the bottom end of the liquid storage tube (24), the communication port of the liquid delivery tube (31) and the liquid storage tube (24) is provided with a sealing ball (32). The inlet hose (33) is fixedly connected with the bottom end of the infusion tube (31) in communication for liquid inlet. The upper opening of the connecting seat body (8) is fixedly connected with the connector (10) in penetration. The top of the connector (10) is provided with the upper interface (11). The bottom of the connector (10) is provided with the lower interface (13) in communication with the upper interface (11). The top end of the valve rod (14) penetrates the lower opening of the connecting seat body (8) and is inserted into the lower interface (13). The infusion channel (23) is in communication with the net channel (4) through the upper interface (11). The air supply mechanism comprises the fixed plate (9) fixedly connected with the inner wall of the barrel (6) at the top. The bottom of the connecting seat body (8) is attached to the fixed plate (9) in penetration. The outer wall of the valve rod (14) is fixedly sleeved with the movable plate (12) below the fixed plate (9). The side edge of the movable plate (12) is spaced apart from the inner wall of the barrel (6). The bottom of the fixed plate (9) and the top of the movable plate (12) are fixedly connected with the same elastic plastic hose (15). The top of the movable plate (12) is annularly provided with a plurality of air guide holes (16) inside the elastic plastic hose (15). The lower opening of the connecting seat body (8) is provided with the one-way air outlet valve (17). The outer wall of the connector (10) is annularly provided with a plurality of air outlet holes (19) in communication with the upper interface (11). The side wall of the barrel (6) is annularly provided with a plurality of air inlet holes (21). The air inlet holes (21) are above the movable plate (12) and are provided with the one-way air inlet valve (22). The bottom end of the connector (10) is fixedly connected with the circular table air guide pipe (20). The circular table air guide pipe (20) and the outer wall of the connector (10) and the inner wall of the connecting seat body (8) form the air supply channel (18).

2. A plastic foam pump as claimed in claim 1, wherein The reset mechanism comprises the hollow rod (26) fixedly connected in penetration with the bottom of the barrel (6). The bottom of the movable plate (12) is annularly fixedly connected with a plurality of fixed rods (25). The bottom end of the fixed rod (25) penetrates the top end of the hollow rod (26) and is fixedly connected with the foam column (27). The top end of the foam column (27) abuts against the top wall of the hollow rod (26). The inside of the hollow rod (26) is filled with the filling liquid (28). The density of the filling liquid (28) is greater than that of the foam column (27).

3. A plastic foam pump as defined in claim 2, wherein The bottom of the fixed plate (9) is fixedly connected with the inner fixed ring (34) inside the elastic plastic hose (15). The bottom of the inner fixed ring (34) is in contact with the top of the movable plate (12). The air guide holes (16) are inside the inner fixed ring (34). The outer wall of the inner fixed ring (34) is slidably sleeved with the outer sliding ring (35). The bottom of the outer sliding ring (35) is fixedly connected with the top of the movable plate (12).

4. A plastic foam pump as defined in claim 3, wherein The bottom of the fixed plate (9) is fixedly connected with the outer fixed ring (37) between the elastic plastic hose (15) and the inner fixed ring (34). The outer wall of the outer fixed ring (37) is in contact with the inside of the elastic plastic hose (15). The inner wall of the outer fixed ring (37) is slidably connected with the inner sliding ring (36). The bottom of the inner sliding ring (36) is fixedly connected with the top of the movable plate (12).

5. A plastic foam pump as defined in claim 4, wherein The side wall of the movable plate (12) is annularly embedded with a plurality of rolling balls (38) which are in rolling contact with the inner wall of the cylinder (6).

6. A plastic foam pump as defined in claim 5, wherein The rolling balls (38) are made of hard plastic material.

7. A method of using a plastic foam pump as defined in claim 6, wherein, The method comprises the following steps: S1, first, connect the cap (1) to the bottle mouth of the liquid storage bottle through the internal thread (5), extend the cylinder (6), the hollow rod (26) and the liquid inlet hose (33) into the liquid storage bottle, and complete the installation between the pump body and the bottle body; S2, during use, press the press head (2) downward, the press head (2) drives the meshing (4), the connecting seat body (8) and the valve rod (14) to move downward, the valve rod (14) drives the piston seat (30) to slide downward, and the liquid in the liquid storage pipe (24) enters the upper interface (11) from the liquid delivery channel (23), at the same time, the valve rod (14) also drives the movable plate (12) to move downward to extrude the air below, so that the gas enters the upper interface (11) from the air guide hole (16), the air guide channel (18) and the air outlet hole (19), and is mixed with the liquid to generate foam, finally, the foam is diffused through the meshing (4), and the foam is extruded out from the foam outlet channel (7) through the delivery channel (3); S3, after extrusion, release the press head (2), the buoyancy of the foam column (27) in the filling liquid (28) drives the movable plate (12) to move upward and reset, and drives the valve rod (14), the connecting seat body (8) and the press head (2) to move upward and reset, the liquid in the bottle body enters the liquid storage pipe (24) from the liquid inlet hose (33) and the liquid delivery pipe (31) again to be supplemented, and when the movable plate (12) moves upward, the air outside enters the cylinder (6) from the air inlet hole (21) for next use.

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