All-plastic liquid pump and container with all-plastic liquid pump

Abstract

The present invention discloses an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the all-plastic liquid pump adopts a plastic spring and a plastic one-way valve, the plastic spring, the plastic one-way valve and other components of the all-plastic liquid pump are all made of plastic materials, and the all-plastic liquid pump can be recycled and reused in its entirety without disassembly, thereby reducing the cost of recycling and reusing the all-plastic liquid pump, being conducive to improving resource utilization, and further contributing to better environmental protection.

Description

Technical Field

[0001] The present invention relates to a liquid pump, in particular to an all-plastic liquid pump and a container with the all-plastic liquid pump. Background Art

[0002] Lotion pumps are installed on containers and are common press-type liquid-dispensing devices in daily life. Lotion pumps are widely used in daily chemical products, such as containers for hand soap, disinfectant, shampoo, shower gel, liquid foundation and other products. They are also suitable for use in the fields of medicine, food, health care products, etc. Lotion pumps are easy to operate and are favored by manufacturers and consumers.

[0003] Reference Figure 1A and Figure 1BA lotion pump 100P includes a pump body 110P, a liquid suction tube 120P, a liquid discharge tube 130P, and a pressing head 140P. The pump body 110P includes a pump housing 111P, a liquid inlet ball valve 112P, a spring 113P, a piston 114P, a hollow plunger 115P, and an assembly 116. The pump housing 111P has a receiving space, and the liquid inlet ball valve 112P, the spring 113P, and the hollow plunger 115P are disposed in the receiving space of the pump housing 111P. The spring 113P is mounted on the hollow plunger 115P, the piston 114P is sleeved on the hollow plunger 115P, and the liquid discharge tube 130P is mounted on the pump housing 111P so as to be connected to the hollow plunger 115P. The inlet ball valve 112P is movably retained between the pipette 120P and the pump housing 111P. The pressing head 140P is mounted on the outlet pipe 130P, and the pump housing 111P is mounted on a liquid container 200P via the assembly 16. When the pressing head 140P of the lotion pump 100P is pressed, the piston 114P moves downward, the spring 113P is compressed, and the pressure within the receiving space of the pump housing 111P increases. The inlet ball valve 112P closes the opening of the pipette 120P, and the outlet hole 115P on the hollow plunger is opened. Under the action of the pressure difference, the liquid within the receiving space of the pump housing 111P enters the outlet pipe 130P through the hollow plunger 115P and can flow out through the pressing head 140P. When the external force applied to the pressing head 140P is removed, the spring 113P returns to its initial position, the piston 114P moves upward, the liquid outlet hole on the hollow plunger 115P closes, the pressure in the accommodation space of the pump housing 111P decreases, the liquid inlet ball valve 112P opens the opening of the pipette 120P, and under the action of the pressure difference, the liquid in the liquid bottle 200 enters the accommodation space of the pump housing 111P through the pipette. By repeatedly pressing the pressing head 140P, the liquid in the container bottle 200P can be continuously taken out.

[0004] The spring of the existing lotion pump 100P is made of metal, which helps ensure that the spring can frequently switch between a compressed state and an initial state over long periods of time. Furthermore, the metal spring possesses sufficient elasticity to quickly drive the outlet tube, the piston, and the hollow plunger upward. Furthermore, the inlet ball valve of the lotion pump 100P is a glass ball that moves up and down under the influence of a pressure differential to connect or block the connection between the pipette and the pump body. Except for the spring and the inlet ball valve, all other components of the lotion pump 100P are made of plastic. In other words, the existing lotion pump 100P is made of at least three materials. To protect the environment and conserve resources, discarded lotion pumps 100P are recycled. However, lotion pumps 100P made of at least three materials can only be recycled after being disassembled. Specifically, after disassembling the lotion pump 100P, the metal spring, glass inlet ball valve, and other plastic components are separated and recycled separately, increasing the recycling cost of the lotion pump 100P and hindering environmental protection. Furthermore, even after separation, the three different materials require at least three different processing steps to fully reuse the disassembled lotion pump 100P, increasing the difficulty of recycling the lotion pump 100P and further increasing the labor and material costs of recycling the lotion pump 100P. Furthermore, during use, the metal spring remains immersed in the liquid within the housing 111P. After prolonged immersion, the spring is susceptible to chemical reactions with the liquid, contaminating the liquid within the housing. Summary of the Invention

[0005] One object of the present invention is to provide an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the all-plastic liquid pump is made entirely of plastic material, and the all-plastic liquid pump can be recycled and reused in its entirety without disassembly, thereby reducing the cost of recycling and reusing the all-plastic liquid pump, which is beneficial to improving resource utilization and further contributing to better environmental protection.

[0006] Another object of the present invention is to provide an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the all-plastic liquid pump is made of only one material, thereby reducing the requirements for the processing technology for recycling and reuse.

[0007] Another object of the present invention is to provide an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the all-plastic liquid pump uses a plastic spring and a plastic one-way valve, and the plastic spring, the plastic one-way valve and other components of the all-plastic liquid pump are all made of plastic, which is convenient for subsequent complete recycling.

[0008] Another object of the present invention is to provide an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the plastic spring of the all-plastic liquid pump includes an upper maintaining portion, a lower maintaining portion, and at least one elastic portion, wherein the elastic portion can be deformed and bent from the upper maintaining portion to the lower maintaining portion, and when the upper maintaining portion and the lower maintaining portion are driven closer to each other, the elastic portion is squeezed to undergo elastic deformation and accumulate elastic potential energy, and when the external force acting on the upper maintaining portion and the lower maintaining portion is removed, the elastic portion releases the elastic potential energy and drives the upper maintaining portion and the lower maintaining portion to return to their initial positions. The plastic spring can be integrally formed by injection molding, with low manufacturing cost and fast production cycle, which is conducive to reducing the production cost of the all-plastic liquid pump.

[0009] Another object of the present invention is to provide an all-plastic liquid pump and a container with the all-plastic liquid pump, wherein the plastic one-way valve includes a fixed portion, a connecting portion and a shielding portion, wherein the fixed portion is fixed to a pump housing of the all-plastic liquid pump, the connecting portion can deformably connect the fixed portion and the shielding portion, and the shielding portion can be driven to move up and down relative to the fixed portion to allow liquid to pass through or block the flow of liquid.

[0010] According to one aspect of the present invention, the present invention provides an all-plastic liquid pump comprising:

[0011] a movable drainage member, wherein the movable drainage member has a drainage channel;

[0012] a press-on liquid storage cap, wherein the press-on liquid outlet cap has a liquid outlet channel, wherein the press-on liquid outlet cap is disposed on the movable drainage member in such a manner that the liquid outlet channel is connected to the drainage channel of the movable drainage member; and

[0013] A pump body, wherein the pump body includes a pump housing, a plastic spring, a piston, a piston seat, a plastic one-way valve and an assembly housing, wherein the pump housing has a liquid storage chamber, wherein the piston seat has a guide channel and a flow hole connected to the guide channel, wherein the plastic spring includes an upper retaining portion, a lower retaining portion and at least one elastic portion, wherein two of the elastic portions can be deformably bent from the upper retaining portion to the lower retaining portion, and the upper retaining portion, the lower retaining portion and the elastic portion are integrally formed, the piston is mounted on the piston seat in a manner that can block the flow hole of the piston seat, the piston seat is mounted on the movable guide member in a manner that the guide channel is connected to the drainage channel of the movable guide member, the plastic one-way valve is movably arranged on the pump housing, and the pump housing is arranged on the assembly housing, the plastic spring can drive the movable guide member, the piston and the piston seat to move relative to the pump housing, and the drainage channel of the movable guide member is conductively connected to the liquid storage chamber of the pump housing.

[0014] According to an embodiment of the present invention, there are two elastic parts, and the two elastic parts are held between the upper maintaining part and the lower maintaining part at an interval.

[0015] According to an embodiment of the present invention, the position where the elastic portion and the upper maintaining portion are connected is located on the symmetry axis of the upper maintaining portion.

[0016] According to an embodiment of the present invention, the position where the elastic portion and the lower maintaining portion are connected is located on the symmetry axis of the lower maintaining portion.

[0017] According to one embodiment of the present invention, the upper maintaining portion and the lower maintaining portion remain parallel.

[0018] According to one embodiment of the present invention, an extension direction of the upper maintaining portion and / or the lower maintaining portion is parallel to a horizontal plane.

[0019] According to one embodiment of the present invention, an angle is formed between the extension direction of the upper maintaining portion and / or the lower maintaining portion and a horizontal plane.

[0020] According to one embodiment of the present invention, the shapes of the upper maintaining portion and the lower maintaining portion are selected from the group consisting of: circle, square, triangle, diamond, ellipse, and semicircular arc.

[0021] According to one embodiment of the present invention, the cross-sectional shape of the elastic portion is selected from the group consisting of: circle, semicircle, square, triangle, rhombus, ellipse, and trapezoid.

[0022] According to an embodiment of the present invention, the elastic portion of the plastic spring is implemented as one, and the elastic portion is a corrugated tubular structure.

[0023] According to one embodiment of the present invention, the elastic portion extends from the upper maintaining portion to the lower maintaining portion in a wave shape.

[0024] According to an embodiment of the present invention, the two elastic portions extend spirally from the upper maintaining portion to the lower maintaining portion.

[0025] According to one embodiment of the present invention, the elastic portion includes at least one first elastic unit and at least one second elastic unit, wherein the first elastic unit and the second elastic unit are connected end to end, and the upper maintaining portion and the lower maintaining portion are connected via at least one first elastic unit and at least one second elastic unit, wherein the first elastic unit of the elastic portion extends obliquely downward, and the second elastic unit of the elastic portion is parallel to the horizontal plane.

[0026] According to one embodiment of the present invention, the elastic portion includes at least one first elastic unit and at least one second elastic unit, wherein the first elastic unit and the second elastic unit are connected end to end, and the upper maintaining portion and the lower maintaining portion are connected via at least one first elastic unit and at least one second elastic unit, wherein the first elastic unit of the elastic portion extends obliquely downward, and there is an angle between the extension direction of the second elastic unit of the elastic portion and the horizontal plane.

[0027] According to one embodiment of the present invention, the all-plastic liquid pump further includes at least one limiting portion, and the limiting portion is connected to two adjacent elastic portions.

[0028] According to an embodiment of the present invention, an extending direction of the limiting portion is parallel to a horizontal plane.

[0029] According to an embodiment of the present invention, there is an angle between the extending direction of the limiting portion and the horizontal plane.

[0030] According to one embodiment of the present invention, the shape of the limiting portion is selected from the group consisting of: a circular ring, a semicircular arc, a broken line, a square, a diamond, a triangle, and an ellipse.

[0031] According to one embodiment of the present invention, the all-plastic liquid pump further includes at least one limiting portion, and the limiting portion is connected to two adjacent elastic portions.

[0032] According to an embodiment of the present invention, an extending direction of the limiting portion is parallel to a horizontal plane.

[0033] According to an embodiment of the present invention, there is an angle between the extending direction of the limiting portion and the horizontal plane.

[0034] According to one embodiment of the present invention, the shape of the limiting portion is selected from the group consisting of: a circular ring, a semicircular arc, a broken line, a square, a diamond, a triangle, and an ellipse.

[0035] According to one embodiment of the present invention, the plastic one-way valve includes a fixed portion, at least one connecting portion and a shielding portion, wherein the fixed portion has a flow channel, wherein the connecting portion can deformably extend from the fixed portion to the shielding portion, and wherein the shielding portion is movably retained in the flow channel of the fixed portion.

[0036] According to one embodiment of the present invention, the fixing portion of the plastic one-way valve is fixed to the pump housing of the pump main body by means of clearance fit, threaded connection or gluing.

[0037] According to one embodiment of the present invention, the lower surface of the shielding portion of the plastic one-way valve is an arc-shaped curved surface or a flat surface.

[0038] According to one embodiment of the present invention, the all-plastic liquid pump further includes a flow guide tube, wherein the flow guide tube has a flow guide channel, wherein the flow guide tube is arranged in the pump housing, and the plastic one-way valve is arranged between the flow guide tube and the pump housing, and the opening of the flow guide channel is opened or closed by the plastic one-way valve.

[0039] According to an embodiment of the present invention, the plastic one-way valve has one connecting portion, and the shielding portion is allowed to flip up and down relative to the fixing portion.

[0040] According to an embodiment of the present invention, the number of the connecting parts of the plastic one-way valve is at least two, and the at least two connecting parts are connected to the shielding part and the fixing part at intervals.

[0041] According to one aspect of the present invention, the present invention provides a container with an all-plastic liquid pump, comprising:

[0042] a container, wherein the container has a liquid containing space; and

[0043] An all-plastic liquid pump, wherein the all-plastic liquid pump comprises a movable drainage member, a press-on liquid collection cap, a pump body and a guide tube, wherein the movable drainage member has a drainage channel, wherein the press-on liquid collection cap has a liquid outlet channel, wherein the guide tube has a drainage channel, wherein the press-on liquid collection cap is arranged on the movable drainage member in such a manner that the liquid outlet channel is connected to the drainage channel of the movable drainage member, wherein the pump body comprises a pump housing, a plastic spring, a piston, a piston seat, a plastic one-way valve and an assembly housing, wherein the pump housing has a liquid storage chamber, wherein the piston seat has a guide channel and a flow hole connected to the guide channel, wherein the plastic spring comprises an upper maintaining portion, a lower maintaining portion and at least one elastic portion, wherein the two elastic portions can be deformed from the upper maintaining portion The cam is connected to the pump end of the pump end and the pump end is connected with the pump end of the pump end to form a circle, the circle being a circle that the cam is connected to the pump end of the pump end. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1A It is a schematic perspective view of an existing lotion bottle.

[0045] Figure 1B It is a schematic diagram of a cross-sectional view of the existing lotion bottle.

[0046] Figure 2 It is a schematic perspective view of a container with an all-plastic liquid pump according to a preferred embodiment of the present invention.

[0047] Figure 3 It is a schematic exploded view of an all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0048] Figure 4 Schematic diagram of the structure of a plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0049] Figure 5 Schematic diagram of the structure of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0050] Figure 6A 1 is a schematic diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0051] Figure 6B 1 is a schematic diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0052] Figure 6C 1 is a schematic diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0053] Figure 6D 1 is a schematic diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0054] Figure 7 1 is a schematic diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0055] Figure 8A Schematic diagram of the structure of a plastic one-way valve of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0056] Figure 8B Schematic diagram of the structure of the plastic one-way valve of the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0057] Figure 8C It is a schematic structural diagram of a modified embodiment of the plastic one-way valve of the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0058] Figure 8D It is a schematic structural diagram of the above-mentioned modified implementation of the plastic one-way valve of the all-plastic liquid pump according to the above-mentioned preferred embodiment of the present invention.

[0059] Figure 9 It is a schematic cross-sectional view of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention.

[0060] Figure 10A It is a schematic diagram of an application of the container with an all-plastic liquid pump according to the preferred embodiment of the present invention.

[0061] Figure 10B It is a schematic diagram of an application of the container with an all-plastic liquid pump according to the preferred embodiment of the present invention.

[0062] Figure 11A1 is a schematic diagram of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention in a locked state.

[0063] Figure 11B 1 is a schematic diagram of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention in an unlocked state.

[0064] Figure 12 It is a schematic structural diagram of the container with an all-plastic liquid pump according to another preferred embodiment of the present invention.

[0065] Figure 13 It is a schematic exploded view of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0066] Figure 14 It is a schematic structural diagram of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0067] Figure 15A It is a schematic structural diagram of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0068] Figure 15B It is a schematic structural diagram of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0069] Figure 16A It is a structural diagram of a modified embodiment of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0070] Figure 16B It is a structural diagram of the above-mentioned modified embodiment of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above-mentioned preferred embodiment of the present invention.

[0071] Figure 16C It is a structural diagram of another modified embodiment of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0072] Figure 16D It is a schematic cross-sectional view of the above-mentioned modified embodiment of the plastic spring of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above-mentioned preferred embodiment of the present invention.

[0073] Figure 17It is a schematic cross-sectional view of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0074] Figure 18A It is a schematic diagram of the application of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0075] Figure 18B It is a schematic diagram of the application of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0076] Figure 19 1 is a schematic diagram of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention, wherein the all-plastic liquid pump is in a locked state.

[0077] Figure 20 It is a schematic diagram of a modified embodiment of the all-plastic liquid pump of the container with the all-plastic liquid pump according to the above preferred embodiment of the present invention.

[0078] Figure 21 It is a schematic diagram of an application diagram of the container with an all-plastic liquid pump according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0079] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0080] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which 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, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0081] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0082] Refer to the accompanying drawings 1 to Figure 10B as well as Figure 21 The following description will illustrate a container 1000 with an all-plastic liquid pump according to some preferred embodiments of the present invention. The container 1000 with an all-plastic liquid pump includes an all-plastic liquid pump 100 and a container 200. The all-plastic liquid pump 100 is detachably mounted on the container 200. By pressing the all-plastic liquid pump 100, liquid in a liquid-containing space 201 of the container 200 can be obtained. Furthermore, the all-plastic liquid pump 100 is made entirely of plastic and can be recycled and reused in its entirety without disassembly, thereby reducing the cost of recycling the all-plastic liquid pump 100, improving resource utilization, and thus better protecting the environment.

[0083] In this specific embodiment of the present invention, the all-plastic liquid pump 100 can prevent external contaminants from entering the liquid holding space 201 of the container 200, thereby preventing the liquid contained in the container 1000 with the all-plastic liquid pump from being contaminated.

[0084] Specifically, refer to Figure 3 The all-plastic liquid pump 100 includes a pump body 10, a movable drainage member 20, a guide tube 30, and a press-on liquid collection cap 40, wherein the pump body 10 has a liquid storage chamber 101, wherein the movable drainage member 20 has a drainage channel 201, wherein the guide tube 30 has a drainage channel 301, and the press-on liquid collection cap 40 has a liquid outlet channel 401. The movable drainage member 20 is movably mounted on the pump body 10, and the drainage channel 201 of the movable drainage member 20 is conductively connected to the liquid storage chamber 101 of the pump body 10. The guide tube 30 is mounted on the pump body 10, and the guide channel 301 of the guide tube 30 is conductively connected to the liquid storage chamber 101 of the pump body 10. The pump body 10 is detachably mounted on the container 200, and the guide channel 301 of the guide tube 30 is connected to the liquid storage space 201 of the container 200. The press-to-dispense liquid cap 40 is disposed on the movable guide member 20 in such a manner that the liquid outlet channel 401 is connected to the movable guide member 20.

[0085] Further, refer to Figures 9 to 10BThe movable guide member 20 has an outer mounting wall 210, and the pump body 10 has an inner mounting wall 110, wherein the movable guide member 20 is movably mounted on the pump body 10 in such a manner that the outer mounting wall 210 corresponds to the inner mounting wall 110 of the pump body 10, and a movable gap 202 is formed between the outer mounting wall 210 of the movable guide member 20 and the inner mounting wall 110 of the pump body 10, so that the movable guide member 20 can be easily driven and moved up and down relative to the pump body 10. During the upward and downward movement of the movable guide member 20 relative to the pump body 10, the liquid in the liquid holding space 201 of the container 200 can sequentially pass through the guide channel 301 of the guide tube 30, the liquid storage chamber 101 of the pump body 10, and the guide channel 201 of the movable guide member 20, and then flow out from the liquid outlet channel 401 of the press-on liquid collection cap 40.

[0086] Furthermore, the push-to-dispense liquid cap 40 is disposed above the pump body 10 in a manner that obscures the active gap 202, thereby preventing the opening of the active gap 202 from being exposed. This prevents external liquid from gradually entering the liquid storage cavity 101 of the pump body 10 and the liquid holding space 201 of the container 200 through the opening of the active gap 202, thereby preventing contamination of the liquid in the liquid storage cavity 101 and the liquid holding space 201. In other words, the opening of the active gap formed between the outer mounting wall 210 of the movable guide member 20 and the inner mounting wall 110 of the pump body 10 is concealed within the anti-fouling space 401 of the push-to-dispense liquid cap 40.

[0087] The pump body 10 includes a pump housing 11, a plastic spring 12, a piston 13, a piston seat 14, a plastic one-way valve 15 and an assembly housing 16, wherein the liquid storage chamber 101 is formed in the pump housing 11, wherein the piston seat 14 has a guide channel 1401 and a flow hole 1402 connected to the guide channel 1401, and wherein the assembly housing 16 has an assembly channel 1601.

[0088] The piston 13 is mounted on the piston seat 14 in a manner that blocks the flow hole 1402 of the piston seat 14, and the piston 13 is movable relative to the piston seat 14. The outer wall of the piston 13 can fit against the inner wall of the pump housing 11 to block the flow of liquid and air. The piston seat 14 is mounted on the movable flow guide member 20 in a manner that the guide channel 1401 is connected to the flow channel 201 of the movable flow guide member 20. The plastic spring 12 is mounted on the movable flow guide member 20, and the plastic spring 12 can drive the movable flow guide member 20, the piston 13, and the piston seat 14 to move. The pump housing 11 is mounted on the flow guide tube 30. Preferably, the flow guide tube 30 is detachably mounted on the pump housing 11 of the pump body 10. Optionally, the flow guide tube 30 and the pump housing 11 of the pump body 10 are integrally formed. The plastic one-way valve 15 is movably disposed between the pump housing 11 and the flow guide tube 30, capable of closing or opening the opening of the flow guide tube 30. The pump housing 11 and the movable flow guide member 20 are mounted in the assembly passage 1601 of the assembly housing 16. The assembly housing 16 allows the all-plastic liquid pump 100 to be detachably mounted to the container 200. Preferably, the assembly housing 16 is mounted to the container 200 via a threaded connection.

[0089] Reference Figures 9 to 10B In this specific embodiment of the present invention, the movable drain member 20 includes a drain portion 21, an abutting portion 22, and a retaining portion 23, wherein the drain channel 201 is formed in the drain portion 21, the outer mounting wall 210 is formed on the outer surface of the retaining portion 23, the abutting portion 22 extends from the drain portion 21 to the retaining portion 23, and the retaining portion 23 is located outside the drain portion 21, and an upper mounting space and a lower mounting space are formed between the drain portion 21, the abutting portion 22, and the retaining portion 23. The press-on liquid collection cap 40 is mounted in the upper mounting space of the movable drain member 20. The plastic spring 12 is retained in the lower mounting space of the movable drain member 20 by being mounted in the drain portion 21.

[0090] The assembly housing 16 of the pump body 10 includes an assembly portion 161 and a limiting portion 162 extending upward from the assembly portion 161, wherein the assembly portion 161 is mounted on the pump housing 11, and the inner assembly wall 110 is formed on the inner surface of the limiting portion 162. The limiting portion 162 is sleeved on the movable flow guiding member 20 in such a manner that its inner surface corresponds to the outer surface of the retaining portion 23 of the movable flow guiding member 20, and the movable gap 202 is formed between the outer surface of the retaining portion 23 of the movable flow guiding member 20 and the inner surface of the limiting portion 162 of the assembly housing 16.

[0091] Reference Figures 9 to 10B The press-to-discharge cap 40 includes a press-to-discharge portion 41, a mounting portion 42, and a dirt shielding portion 43. The mounting portion 42 extends downward from the press-to-discharge portion 42. The liquid outlet channel 401 is formed between the press-to-discharge portion 41 and the mounting portion 42. The dirt shielding portion 43 extends downward from the press-to-discharge portion 41. The dirt shielding portion 43 is located outside the mounting portion 42, and a dirt-proof space 402 opening downward is formed between the dirt shielding portion 43 and the mounting portion 42. The press-to-discharge cap 40 is held above the movable drain member 20 and the pump body 10 in such a manner that the mounting portion 42 is disposed in the upper mounting space of the movable drain member 20. The retaining portion 23 of the movable flow guide member 20 is located between the mounting portion 42 and the dirt blocking portion 43 of the push-to-dispense liquid cap 40. The dirt blocking portion 43 of the push-to-dispense liquid cap 40 is located outside the retaining portion 23 of the movable flow guide member 20. The end of the limiting portion 162 of the assembly housing 16 of the pump body 10 enters the anti-fouling space 402 of the push-to-dispense liquid cap 40. The dirt blocking portion 43 of the push-to-dispense liquid cap 40 is located outside the limiting portion 162 of the assembly housing 16.

[0092] In other words, the push-on liquid collection cap 40 is mounted on the upper portion of the movable flow guide member 20 and the assembly housing 16 of the pump body 10 with the opening of the anti-contamination space 402 facing downward. The push-on liquid collection cap 40 blocks the opening of the movable gap 202 formed between the movable flow guide member 20 and the assembly housing 16, thereby changing the extension direction of the movable gap 202. Furthermore, the horizontal position of the opening of the anti-contamination space 402 of the push-on liquid collection cap 40 mounted on the movable flow guide member 20 and the pump body 10 is lower than the horizontal position of the opening of the movable gap 202. In this way, when a user squeezes the push-to-dispense liquid cap 40 with wet hands to dispense liquid, the water carried by the user's hands can only flow along the outer wall of the dirt-blocking portion 43 of the push-to-dispense liquid cap 40, the outer wall of the assembly shell 16 of the pump body 10, and the outer wall of the container 200, and cannot enter the interior of the all-plastic liquid pump 100 and the container 200. This prevents external contaminants from contaminating the liquid in the all-plastic liquid pump 100 and the container 200, thereby ensuring the safety and reliability of the container 1000 with the all-plastic liquid pump and the all-plastic liquid pump 100. It is worth mentioning that regardless of whether the push-to-dispense liquid cap 40 and the pump body 10 are in a relatively static state or a relatively moving state, the push-to-dispense liquid cap 40 always blocks the opening of the movable gap 202.

[0093] That is, the push-to-dispense liquid cap 40 and the pump body 10 always shield the outer mounting wall 210 of the movable guide member 20. Specifically, the portion of the movable guide member 20 located above the pump body 10 is shielded by the push-to-dispense liquid cap 40, and the movable guide member 20 is hidden within the anti-fouling 40 and the internal space of the pump body 10, preventing external contaminants, such as dust, from adhering to the surface of the movable guide member 20. This further prevents external contaminants from entering the interior of the pump body 10 and contaminating the liquid contained therein.

[0094] Preferably, the dirt-blocking portion 43 of the push-on liquid-collecting cap 40 and the limiting portion 162 of the assembly shell 16 of the pump body 10 are clearance-fitted. In the process of the push-on liquid-collecting cap 40 being driven to move downward relative to the assembly shell 16, the push-on liquid-collecting cap 40 can scrape off the liquid on the outer surface of the limiting portion 162 of the assembly shell 16, thereby preventing the liquid remaining on the outer surface of the assembly shell 16 from generating water vapor and entering the internal space of the pump body 10, which is further beneficial to preventing external pollutants from entering the interior of the all-plastic liquid pump 100 and the storage container 200.

[0095] In some specific embodiments of the present invention, the push-to-dispense liquid cap 40 of the all-plastic liquid pump 100 is detachably mounted on the movable drainage member 20. Preferably, the push-to-dispense liquid cap 40 is stably mounted on the movable drainage member 20 by a clearance fit. Alternatively, the push-to-dispense liquid cap 40 is stably mounted on the movable drainage member 20 by a threaded connection. In a specific embodiment of the present invention, the push-to-dispense liquid cap 40 and the movable drainage member 20 are integrally formed.

[0096] In this specific embodiment of the container 1000 with an all-plastic liquid pump of the present invention, the all-plastic liquid pump 100 prevents the plastic spring 12 of the pump body 10 from being corroded by isolating the plastic spring 12 from the liquid, thereby preventing the pump body 10 and the liquid in the container 200 from being contaminated.

[0097] Specifically, refer to Figure 3 、 Figures 9 to 10B The pump body 10 further includes a spring support seat 17, wherein the spring support seat 17 includes a bearing portion 171 and a support arm 172 extending outward from the outer wall of the bearing portion 171, wherein the bearing portion 171 has a accommodating cavity 1701 and an assembly opening 1702 connected to the accommodating cavity 1711. The bearing portion 171 of the spring support seat 17 is retained in the liquid storage cavity 101 of the pump housing 11 in such a manner that the support arm 172 is affixed to the upper edge of the pump housing 11. The movable flow guide member 20 is retained in the accommodating cavity 1701 of the bearing portion 171 in such a manner that the lower end of the flow guide portion 21 is movably retained in the assembly opening 1702 of the bearing portion 171. The upper end of the spring 11, which is sleeved on the drainage portion 21 of the movable drainage member 20, abuts against the abutment portion 22 of the movable drainage member 20, and the lower end of the plastic spring 12 abuts against the bottom of the bearing portion 171 of the spring support seat 17. The piston 13 and the piston seat 14 are located below the bearing portion 171 of the spring support seat 17.

[0098] During use of the all-plastic liquid pump 100, the press-on liquid collection cap 40 is pressed downward, causing the press-on liquid collection cap 40 and the movable drainage member 20 connected thereto to move downward relative to the pump body 10. The abutment portion 23 of the movable drainage member 20 and the bearing portion 171 of the spring support seat 17 squeeze the plastic spring 12. The drainage portion 21 of the movable drainage member 20 pushes the piston 13 and the piston seat 14 downward. The friction between the outer wall of the piston 13 and the inner wall of the pump housing 11 hinders the speed of the piston 13's downward movement. The piston seat 14 moves downward relative to the piston 13, exposing the flow hole 1402 of the piston seat 14. The flow hole 1402 connects the guide channel 1401 of the piston seat 14 and the liquid storage chamber 101 of the pump housing 11. The pressure in the liquid storage chamber 101 below the piston 13 increases, and the plastic one-way valve 15 closes the opening of the liquid guide tube 30. Under the action of the pressure difference, the liquid in the liquid storage chamber 101 of the pump housing 11 enters the guide channel 1401 through the circulation hole 1402 of the piston seat 14, passes through the drainage channel 201 of the movable circulation member 20, and then flows out through the liquid outlet channel 401 of the press-on liquid collection cap 40.

[0099] When the pressing force on the liquid collection cap 40 is removed, the force of the plastic spring 12 tending to restore the initial position drives the movable guide member 20 to move upward, and drives the piston 13 and the piston seat 14 to move upward to the initial position. The piston 13 closes the flow hole 1402 of the piston seat 14 to prevent the flow of liquid. The pressure in the liquid storage chamber 101 below the piston 13 decreases. The plastic one-way valve 15 opens, and the guide channel 301 of the guide tube 30 is connected to the liquid storage chamber 101 of the pump housing 11. And under the action of the pressure difference, the liquid in the liquid holding space 201 of the container 200 is pressed into the liquid storage chamber 101 of the pump housing 11 from the guide channel 301 of the guide tube 30.

[0100] The plastic spring 12 is held above the piston 13, blocking any liquid entering the liquid storage chamber 101 of the pump housing 11. The plastic spring 12 never comes into contact with the liquid. This prevents corrosion of the plastic spring 12, thereby ensuring the purity of the liquid in the liquid storage chamber 101 of the all-plastic liquid pump 100 and the liquid holding space 201 of the container 200.

[0101] Further, refer to Figures 9 to 11BThe all-plastic liquid pump 100 can be switched between a locked state and an unlocked state. In the locked state, the press-to-take liquid cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 cannot be driven to move, which facilitates the storage and transportation of the container 1000 with the all-plastic liquid pump; in the unlocked state, the press-to-take liquid cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 can be driven to move relative to the pump body 10, thereby facilitating the user to press and take liquid.

[0102] The push-to-discharge cap 40 of the all-plastic liquid pump 100 further includes a locking portion 44, wherein the locking portion 44 extends downward from the push-to-discharge portion 41 and is located between the mounting portion 42 and the dirt blocking portion 43. The locking portion 44 of the push-to-discharge cap 40 and the limiting portion 162 of the assembly housing 16 of the pump body 10 are detachably connected to enable the all-plastic liquid pump 100 to switch between the locked state and the unlocked state.

[0103] Reference Figure 11A In a specific embodiment of the present invention, the locking portion 44 of the push-to-liquid collection cap 40 is provided with a limiting protrusion, and the limiting portion 162 of the assembly shell 16 has a longitudinal channel and a transverse channel connected to the longitudinal channel, and the longitudinal channel and the transverse channel are connected to the assembly channel 1601. The limiting protrusion of the locking portion 44 of the push-to-liquid collection cap 40 can move between the longitudinal channel and the transverse channel. The longitudinal channel passes through the limiting portion 162 of the assembly shell 16 from top to bottom. When the limiting protrusion of the locking portion 44 of the push-to-liquid collection cap 40 is located in the longitudinal channel, the push-to-liquid collection cap 40 and the movable drainage member 20 can be driven to move up and down, that is, the push-to-liquid collection cap 40 is in the unlocked state at this time. When the limiting protrusion of the locking portion 44 of the push-on liquid collection cap 40 is located in the transverse channel and the limiting protrusion is located on one side of the longitudinal channel, the inner wall of the assembly housing 16 defining the transverse channel restricts the limiting protrusion of the locking portion 44 of the push-on liquid collection cap 40. At this time, the push-on liquid collection cap 40 is buckled into the assembly housing 16, and the push-on liquid collection cap 40 and the movable drainage member 20 cannot move relative to the pump body 10, that is, the all-plastic liquid pump 100 is in the locked state.

[0104] Furthermore, the all-plastic liquid pump 100 can be switched between the locked and unlocked states by rotating the push-on liquid extraction cap 40. Specifically, by rotating the push-on liquid extraction cap 40 of the all-plastic liquid pump 100 in the locked state so that the limiting protrusion of the locking portion 44 of the push-on liquid extraction cap 40 enters the longitudinal channel from the transverse channel, the all-plastic liquid pump 100 can be switched to the unlocked state. At this point, the compressed plastic spring 12 releases its elastic potential energy, causing the movable drainage member 20 and the push-on liquid extraction cap 40 to spring upward. When the push-to-dispense cap 40 of the all-plastic liquid pump 100 in the unlocked state is pressed, the push-to-dispense cap 40 and the movable drainage member 20 move downward, and the limiting protrusion of the locking portion 44 of the push-to-dispense cap 40 moves within the longitudinal channel, that is, the longitudinal channel can guide the movement of the push-to-dispense cap 40 and the movable drainage member 20, and when the limiting protrusion moves to a position corresponding to the transverse channel, the push-to-dispense cap 40 is rotated, the limiting protrusion enters the transverse channel from the longitudinal channel, and the all-plastic liquid pump 100 is switched from the unlocked state to the locked state. In other words, the all-plastic liquid pump 100 switches between the locked state and the unlocked state by means of a snap-fit ​​connection between the push-to-dispense cap 40 and the assembly housing 16 of the pump body 10.

[0105] In a specific embodiment of the present invention, the limiting protrusion can also be provided on the limiting portion 162 of the assembly shell 16 of the pump body 10 , and the longitudinal channel and the transverse channel are provided on the locking portion 44 of the press-on liquid collection cap 40 .

[0106] Reference Figure 11BIn a specific embodiment of the present invention, the locking portion 44 of the push-on liquid collection cap 40 is provided with an external thread, and the limiting portion 162 of the assembly shell 16 of the pump body 10 is provided with an internal thread that matches the external thread. When the external thread of the locking portion 44 of the push-on liquid collection cap 40 is stably connected to the internal thread of the limiting portion 162 of the assembly shell 16, the all-plastic liquid pump 100 is in the locked state, and the push-on liquid collection cap 40 and the movable drainage member 20 cannot move up and down relative to the pump body 10. After the push-on liquid collection cap 40 is rotated so that the external thread of the push-on liquid collection cap 40 and the internal thread of the limiting portion 162 of the assembly shell 16 are separated, the all-plastic liquid pump 100 switches to the unlocked state, and the push-on liquid collection cap 40 and the movable drainage member 20 can move up and down relative to the pump body 10. That is, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by threading the pressing liquid collection cap 40 and the assembly housing 16 of the pump body 10 .

[0107] It is worth mentioning that those skilled in the art should understand that the specific implementation of the all-plastic liquid pump 100 switching between the locked state and the unlocked state is merely an example and cannot limit the content and scope of the container 1000 with an all-plastic liquid pump and the all-plastic liquid pump 100 of the present invention.

[0108] Refer to the instruction manual Figures 12 to 19 The container 1000 with an all-plastic liquid pump according to another preferred embodiment of the present invention will be described below, wherein the container 1000 with an all-plastic liquid pump includes an all-plastic liquid pump 100 and a container 200, wherein the all-plastic liquid pump 100 is detachably mounted on the container 200, and the liquid in a liquid holding space 201 of the container 200 can be obtained by pressing the all-plastic liquid pump 100. In addition, during the process of pressing to obtain liquid, the liquid attached to the outer wall of the all-plastic liquid pump 100 can be scraped off, preventing external contaminants from entering the internal space of the all-plastic liquid pump 100 and the container 200, thereby ensuring the cleanliness of the liquid contained in the container 1000 with an all-plastic liquid pump and improving the safety and reliability of the container 1000 with an all-plastic liquid pump.

[0109] Specifically, refer to Figure 13The all-plastic liquid pump 100 includes a pump body 10, a movable drainage member 20, a guide tube 30, and a press-on liquid collection cap 40, wherein the pump body 10 has a liquid storage chamber 101, wherein the movable drainage member 20 has a drainage channel 201, wherein the guide tube 30 has a drainage channel 301, and the press-on liquid collection cap 40 has a liquid outlet channel 401. The movable drainage member 20 is movably mounted on the pump body 10 by a clearance fit, and the drainage channel 201 of the movable drainage member 20 is conductively connected to the liquid storage chamber 101 of the pump body 10. The guide tube 30 is mounted on the pump body 10, and the guide channel 301 of the guide tube 30 is conductively connected to the liquid storage chamber 101 of the pump body 10. The pump body 10 is detachably mounted on the container 200, and the guide channel 301 of the guide tube 30 is connected to the liquid storage space 201 of the container 200. The press-to-dispense liquid cap 40 is disposed on the movable guide member 20 in such a manner that the liquid outlet channel 401 is connected to the movable guide member 20.

[0110] Specifically, the movable guide member 20 has an outer mounting wall 210, and the pump body 10 has an inner mounting wall 110, wherein the movable guide member 20 is movably mounted on the pump body 10 in such a manner that the outer mounting wall 210 is in contact with the inner mounting wall 110 of the pump body 10. By pressing the liquid collection cap 40, the movable guide member 20 is driven to move downward relative to the pump body 10, while the pump body 10 simultaneously moves upward relative to the movable guide member 20. During the upward movement of the pump body 10 relative to the movable guide member 20, the pump body 10 can scrape off liquid adhering to the outer mounting wall 210 of the movable guide member 20, thereby preventing liquid from entering the pump body 10 and the interior of the container 20.

[0111] The pump body 10 includes a pump housing 11, a plastic spring 12, a piston 13, a piston seat 14, a plastic one-way valve 15 and an assembly housing 16, wherein the liquid storage chamber 101 is formed in the pump housing 11, wherein the piston seat 14 has a guide channel 1401 and a flow hole 1402 connected to the guide channel 1401, and wherein the assembly housing 16 has an assembly channel 1601.

[0112] The piston 13 is mounted on the piston seat 14 in a manner that blocks the flow hole 1402 of the piston seat 14, and the piston 13 is movable relative to the piston seat 14. The outer wall of the piston 13 can fit against the inner wall of the pump housing 11 to block the flow of liquid and air. The piston seat 14 is mounted on the movable flow guide member 20 in a manner that the guide channel 1401 is connected to the flow channel 201 of the movable flow guide member 20. The plastic spring 12 is mounted on the movable flow guide member 20, and the plastic spring 12 can drive the movable flow guide member 20, the piston 13, and the piston seat 14 to move. The pump housing 11 is mounted on the flow guide tube 30. Preferably, the flow guide tube 30 is detachably mounted on the pump housing 11 of the pump body 10. Optionally, the flow guide tube 30 and the pump housing 11 of the pump body 10 are integrally formed. The plastic one-way valve 15 is movably disposed between the pump housing 11 and the flow guide tube 30, capable of closing or opening the opening of the flow guide tube 30. The pump housing 11 and the movable flow guide member 20 are mounted in the assembly passage 1601 of the assembly housing 16. The assembly housing 16 allows the all-plastic liquid pump 100 to be detachably mounted to the container 200. Preferably, the assembly housing 16 is mounted to the container 200 via a threaded connection.

[0113] Reference Figures 17 to 19 The movable drain member 20 includes a drain portion 21, an abutting portion 22, and a retaining portion 23, wherein the drain channel 201 is formed in the drain portion 21, wherein the abutting portion 22 extends from the drain portion 21 to the retaining portion 23, and the retaining portion 23 is located on the outside of the drain portion 21, and an upper mounting space and a lower mounting space are formed between the drain portion 21, the abutting portion 22, and the retaining portion 23. The outer mounting wall 210 of the movable drain member 20 is formed on the outer surface of the retaining portion 23. The press-on liquid collection cap 40 is mounted in the upper mounting space of the movable drain member 20. The plastic spring 12 is retained in the lower mounting space of the movable drain member 20 in a manner of being mounted in the drain portion 21.

[0114] The assembly housing 16 includes a main body 161 and a scraping arm 162, which is tilted and held above the main body 161. The inner assembly wall 110 of the pump body 10 is formed on the inner surface of the scraping arm 162. The movable drainage member 20 is movably held in the assembly channel 1601 of the assembly housing 16, with the outer surface of the retaining portion 23 abutting the inner surface of the scraping arm 162. The outer surface of the retaining portion 13 of the movable drainage member 20 and the inner surface of the scraping arm 162 of the assembly housing 16 are loosely fitted, which helps prevent water from flowing between the movable drainage member 20 and the assembly housing 16 into the liquid storage chamber 101 of the pump housing 11 and the liquid containing space 201 of the container 200.

[0115] Reference Figure 12 、 Figures 17 to 19 In a specific embodiment of the present invention, the scraping arm 162 and the shell body 161 are integrally formed, that is, the scraping arm 162 integrally extends upward from the shell body 161.

[0116] Reference Figure 20 In another specific embodiment of the present invention, the scraping arm 162 and the housing body 161 are separate structures, and the scraping arm 162 can be mounted on the housing body 161. Specifically, the assembly housing 16 further includes a connector 163, from which the scraping arm 162 extends upward at an angle, forming an anti-fouling cover. The connector 163 is fixed to the housing body 161 by being sleeved over the housing body 161, and the scraping arm 162 is held above the housing body 161. The movable drainage member 20 is movably retained in the assembly channel 1601 of the assembly housing 16, with the outer surface of the retaining portion 23 abutting the inner surface of the scraping arm 162. For example, but not limited to, the connector 163 can be detachably mounted to the housing body 161 through a clearance fit, a threaded connection, or the like. By attaching the anti-fouling cover of suitable dimensions to an existing lotion pump, the existing lotion pump can also be made to provide anti-fouling effects. It should be understood by those skilled in the art that the specific connection method between the scraping arm 162 and the shell body 161 is only for illustration and cannot limit the content and scope of the container 1000 with an all-plastic liquid pump and the all-plastic liquid pump 100 of the present invention.

[0117] Further, refer to Figure 18A and Figure 18BThe scraping arm 162 has an outer wall that is inclined relative to the inner mounting wall 110. The outer wall extends downwardly at an angle relative to the retaining portion 13 of the movable drainage member 20. When the movable drainage member 20 is driven downward relative to the pump body 20, liquid adhering to the outer surface of the retaining portion 13 of the movable drainage member 20 is scraped by the scraping arm 162 and then rapidly flows down along the inclined outer wall of the scraping arm 162, further facilitating the rapid removal of liquid adhering to the outer mounting wall 210 of the movable drainage member 20.

[0118] In some specific embodiments of the present invention, the push-to-dispense liquid cap 40 of the all-plastic liquid pump 100 is detachably mounted on the movable drainage member 20. Preferably, the push-to-dispense liquid cap 40 is stably mounted on the movable drainage member 20 by a clearance fit. Alternatively, the push-to-dispense liquid cap 40 is stably mounted on the movable drainage member 20 by a threaded connection. In a specific embodiment of the present invention, the push-to-dispense liquid cap 40 and the movable drainage member 20 are integrally formed.

[0119] In this specific embodiment of the container 1000 with an all-plastic liquid pump of the present invention, the all-plastic liquid pump 100 prevents the plastic spring 12 of the pump body 10 from being corroded by isolating the plastic spring 12 from the liquid, thereby preventing the pump body 10 and the liquid in the container 200 from being contaminated.

[0120] Specifically, refer to Figure 13 , Figures 17 to 20 The pump body 10 further includes a spring support seat 17, wherein the spring support seat 17 includes a bearing portion 171 and a support arm 172 extending outward from the outer wall of the bearing portion 171, wherein the bearing portion 171 has a accommodating cavity 1701 and an assembly opening 1702 connected to the accommodating cavity 1711. The bearing portion 171 of the spring support seat 17 is retained in the liquid storage cavity 101 of the pump housing 11 in such a manner that the support arm 172 is affixed to the upper edge of the pump housing 11. The movable flow guide member 20 is retained in the accommodating cavity 1701 of the bearing portion 171 in such a manner that the lower end of the flow guide portion 21 is movably retained in the assembly opening 1702 of the bearing portion 171. The upper end of the spring 11, which is sleeved on the drainage portion 21 of the movable drainage member 20, abuts against the abutment portion 22 of the movable drainage member 20, and the lower end of the plastic spring 12 abuts against the bottom of the bearing portion 171 of the spring support seat 17. The piston 13 and the piston seat 14 are located below the bearing portion 171 of the spring support seat 17.

[0121] Reference Figure 18A and Figure 18B During use of the all-plastic liquid pump 100, the press-on liquid collection cap 40 is pressed downward, causing the press-on liquid collection cap 40 and the movable drainage member 20 connected thereto to move downward relative to the pump body 10. The abutment portion 23 of the movable drainage member 20 and the bearing portion 171 of the spring support seat 17 squeeze the plastic spring 12. The drainage portion 21 of the movable drainage member 20 pushes the piston 13 and the piston seat 14 downward. The friction between the outer wall of the piston 13 and the inner wall of the pump housing 11 hinders the speed of the downward movement of the piston 13. The piston seat 14 moves downward relative to the piston 13, exposing the flow hole 1402 of the piston seat 14. The flow hole 1402 connects the guide channel 1401 of the piston seat 14 and the liquid storage chamber 101 of the pump housing 11. The pressure in the liquid storage chamber 101 below the piston 13 increases, and the plastic one-way valve 15 closes the opening of the liquid guide tube 30. Under the action of the pressure difference, the liquid in the liquid storage chamber 101 of the pump housing 11 enters the guide channel 1401 through the circulation hole 1402 of the piston seat 14, passes through the drainage channel 201 of the movable circulation member 20, and then flows out through the liquid outlet channel 401 of the press-on liquid collection cap 40.

[0122] When the pressing force on the liquid collection cap 40 is removed, the force of the plastic spring 12 tending to restore the initial position drives the movable guide member 20 to move upward, and drives the piston 13 and the piston seat 14 to move upward to the initial position. The piston 13 closes the flow hole 1402 of the piston seat 14 to prevent the liquid from flowing between the pump housing 11 and the movable guide member 20. The pressure in the liquid storage chamber 101 below the piston 13 decreases. The plastic one-way valve 15 opens, and the guide channel 301 of the guide tube 30 is connected to the liquid storage chamber 101 of the pump housing 11. Under the action of the pressure difference, the liquid in the liquid holding space 201 of the container 200 is pressed into the liquid storage chamber 101 of the pump housing 11 from the guide channel 301 of the guide tube 30.

[0123] The plastic spring 12 is held above the piston 13, blocking any liquid entering the liquid storage chamber 101 of the pump housing 11. The plastic spring 12 never comes into contact with the liquid. This prevents corrosion of the plastic spring 12, thereby ensuring the purity of the liquid in the liquid storage chamber 101 of the all-plastic liquid pump 100 and the liquid holding space 201 of the container 200.

[0124] Further, refer to Figure 7 and Figure 19 The all-plastic liquid pump 100 can be switched between a locked state and an unlocked state. In the locked state, the press-to-take liquid cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 cannot be driven to move, which facilitates the storage and transportation of the container 1000 with the all-plastic liquid pump; in the unlocked state, the press-to-take liquid cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 can be driven to move relative to the pump body 10, thereby facilitating the user to press and take liquid.

[0125] Reference Figure 19 In this specific embodiment of the present invention, a limiting portion 231 is provided at the lower portion of the retaining portion 23 of the movable flow guiding member 20, and a locking portion 1711 is provided at the lower portion of the bearing portion 171 of the spring support seat 17. The retaining portion 23 of the movable flow guiding member 20 is movably retained within the accommodating cavity 1701 of the bearing portion 171. The limiting portion 231 of the retaining portion 23 and the movable portion 1711 of the bearing portion 171 cooperate with each other, allowing the all-plastic liquid pump 100 to switch between the locked state and the unlocked state.

[0126] Preferably, the limiting portion 231 of the movable guide member 20 is implemented as an external thread, and the locking portion 1711 of the bearing portion 171 of the spring support seat 17 is implemented as an internal thread adapted to the external thread. When the movable guide member 20 is driven to move downward, and the limiting portion 231 of the interactive guide member 20 and the locking portion 1711 of the bearing portion 171 of the spring support seat 17 are stably connected, the all-plastic liquid pump 100 is in the locked state, and the push-on liquid collection cap 40 and the movable guide member 20 cannot move up and down relative to the pump body 10. After rotating the movable guide member 20 so that the external thread and the internal thread are separated, the all-plastic liquid pump 100 switches to the unlocked state, and the push-on liquid collection cap 40 and the movable guide member 20 can move up and down relative to the pump body 10. That is, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by threaded connection between the movable guide member 20 and the spring support seat 17 .

[0127] Optionally, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by snap-fitting the movable guide member 20 and the spring support seat 17. It is worth mentioning that those skilled in the art should understand that the specific implementation method for switching the all-plastic liquid pump 100 between the locked state and the unlocked state is merely an example and does not limit the content and scope of the container 1000 with an all-plastic liquid pump and the all-plastic liquid pump 100 of the present invention.

[0128] Reference Figures 4 to 7 , Figures 14 to 16D In this specific embodiment of the all-plastic liquid pump 100 of the present invention, the plastic spring 12 of the all-plastic liquid pump 100 includes an upper retaining portion 1210, a lower retaining portion 1220, and at least one elastic portion 1230. The elastic portion 1230 deformably extends integrally from the upper retaining portion 1210 to the lower retaining portion 1220, and a mounting channel 1201 is formed between the upper retaining portion 1210, the lower retaining portion 1220, and the elastic portion 1230. The drainage portion 21 of the movable drainage member 20 is retained in the mounting channel 1201 of the plastic spring 12. When the upper retaining portion 1210 and the lower retaining portion 1220 are driven relatively close to each other, the upper retaining portion 1210 and the lower retaining portion 1220 squeeze the elastic portion 1230, causing the elastic portion 1230 to elastically deform and accumulate elastic potential energy. When the external force acting on the upper maintaining portion 1210 and the lower maintaining portion 1220 is removed, the elastic portion 1230 releases elastic potential energy and returns to its initial state.

[0129] The upper retaining portion 1210, the lower retaining portion 1220, and the elastic portion 1230 of the plastic spring can be integrally formed through injection molding, which reduces manufacturing costs and shortens production cycles, thereby reducing the production cost of the liquid pump using the plastic spring. Furthermore, the plastic material used to make the plastic spring 12 can be selected from polyethylene, polypropylene, or other materials known to those skilled in the art. The specific composition of the plastic spring 12 is not limited.

[0130] Preferably, the elastic portion 1230 is implemented as two, and the two elastic portions 1230 are maintained at intervals between the upper maintaining portion 1210 and the lower maintaining portion 1220 to prevent the plastic spring 12 from deflecting laterally when squeezed, which is beneficial to improving the stability of the plastic spring 12.

[0131] It is worth mentioning that the specific number of the elastic parts 1230 is not limited. The elastic parts 1230 can be implemented as one, two, three or even more than three. By setting different numbers of the elastic parts 1230, the plastic spring can have different elastic forces to be suitable for different products.

[0132] Reference Figure 16C and Figure 16D Preferably, the elastic portion 30 is implemented as one. For example, the elastic portion 30 is a corrugated tubular structure.

[0133] During use of the liquid pump 1000, the press-on liquid extraction cap 40 of the liquid pump 1000 is pressed, and the upper retaining portion 1210 and the lower retaining portion 10 of the spring 100 approach each other, squeezing the two elastic portions 1230. The two elastic portions 1230 are compressed by deformation and accumulate elastic potential energy. When the external force on the press-on liquid extraction cap 40 is removed, the elastic portion 1230 of the spring 100 releases the elastic potential energy, driving the movable drainage member 20, the press-on liquid extraction cap 40, the piston 13, and the piston seat 14 to move upward and return to their initial positions.

[0134] In a specific embodiment of the present invention, the upper maintaining portion 1210 and the lower maintaining portion 1220 remain parallel, and the upper maintaining portion 1210 and the lower maintaining portion 1220 are parallel to the horizontal plane. When the upper maintaining portion 1210 is subjected to a vertical downward pressing force, the upper maintaining portion 1210 is subjected to a uniform force, which is conducive to uniformly driving the elastic portion to deform and compress downward. Optionally, the upper maintaining portion 1210 and the lower maintaining portion 1220 can also be implemented as non-parallel. Optionally, the upper maintaining portion 1210 and the lower maintaining portion 1220 can also be implemented as having an inclined angle with respect to the horizontal plane. Preferably, the upper maintaining portion 1210 and the lower maintaining portion 1220 extend in the same direction. Optionally, the upper maintaining portion 1210 and the lower maintaining portion 1220 extend in different directions. For example, the upper maintaining portion 1210 can be implemented as extending obliquely upward, and the lower maintaining portion 1220 can be implemented as extending obliquely downward.

[0135] In this specific embodiment of the plastic spring 12 of the present invention, the upper retaining portion 1210 and the lower retaining portion 1220 are circular. Alternatively, the upper retaining portion 1210 and the lower retaining portion 1220 may be square, triangular, elliptical, rhombus-shaped, semicircular, trapezoidal, or the like. In other words, the upper retaining portion 1210 and the lower retaining portion 1220 may be closed or open. Those skilled in the art should understand that the specific embodiments of the upper retaining portion 1210 and the lower retaining portion 1220 of the plastic spring 12 are merely illustrative and are not intended to be limiting of the content and scope of the present invention.

[0136] Reference Figures 4 to 7 , Figures 14 to 16D The elastic portion 1230 includes at least one first elastic unit 1231 and at least one second elastic unit 1232, wherein the first elastic unit 1231 and the second elastic unit 1232 are connected end to end, and the upper maintaining portion 1210 and the lower maintaining portion 1220 are connected by at least one first elastic unit 1231 and at least one second elastic unit 1232.

[0137] It is worth mentioning that the specific number and implementation method of the first elastic unit 1231 and the second elastic unit 1232 are not limited. The first elastic unit 1231 and the second elastic unit 1232 can be implemented as one, two, three or more than three. The specific number of the first elastic unit 1231 and the second elastic unit 1232 can be the same or different. Figures 3 to 6B The number of the elastic parts 1230 is two, the number of the first elastic elements 1231 of each elastic part 1230 is three, and the number of the second elastic elements is two. Figure 6C and Figure 6D , the first elastic element 1231 and the second elastic element 1232 of each elastic portion 1230 are both implemented in two.

[0138] And, refer to Figures 5 to 6B 、 Figure 15AThe cross-sectional shapes of the first elastic unit 1231 and the second elastic unit 1232 can be implemented as triangles, squares, diamonds, circles, semicircles, ellipses, trapezoids, etc. The cross-sectional shapes of the first elastic unit 1231 and the second elastic unit 1232 can be the same or different. It should be understood by those skilled in the art that by providing different numbers of the first elastic units 1231 and the second elastic units 1232, the plastic spring 12 can have different elasticities to suit different products. The specific embodiments of the first elastic unit 1231 and the second elastic unit 1232 disclosed in the specification and drawings are merely examples and should not be construed as limiting the content and scope of the plastic spring of the present invention.

[0139] In a specific embodiment of the present invention, the connection position of the elastic portion 1230 and the upper retaining portion 1210 is located on the symmetry axis of the upper retaining portion 1210, which is conducive to the uniform force applied to the two elastic portions 1230 when the upper retaining portion 1210 is forced to move downward, thereby enabling them to deform synchronously and uniformly. Preferably, the connection position of the two elastic portions 1230 and the lower retaining portion 1220 is located on the symmetry axis of the lower retaining portion 1220, which is conducive to the uniform deformation of the two elastic portions 1230 when the upper retaining portion 1210 and the lower retaining portion 1220 approach each other. Optionally, the connection position of the elastic portion 1230 and the upper retaining portion 1210 can also be implemented as being distributed on both sides of the symmetry axis of the upper retaining portion 1210. Optionally, the connection position of the elastic portion 1230 and the lower retaining portion 20 can also be implemented as being distributed on both sides of the symmetry axis of the lower retaining portion 1220. The specific connection positions of the elastic portion 1230 and the upper retaining portion 1210 and the lower retaining portion 1220 are merely examples and are not intended to limit the content and scope of the all-plastic liquid pump 100 of the present invention.

[0140] Reference Figures 4 to 7In a specific embodiment of the present invention, the elastic portion 1230 extends in a wave-like shape from the upper retaining portion 1210 to the lower retaining portion 1220. Specifically, the first elastic unit 1231 bends and extends obliquely downward from left to right, while the second elastic unit 1232 bends and extends obliquely downward to the left. Multiple first elastic units 1231 and multiple second elastic units 1232 are connected end to end to form the wave-shaped elastic portion 1230. The first elastic unit 1231 of one elastic portion 1230 held between the upper retaining portion 1210 and the lower retaining portion 1220 corresponds to the second elastic unit 1232 of another elastic portion 1230. When the upper retaining portion 1210 and the lower retaining portion 1220 are moved closer to each other under the action of an external force, the elastic portion 1230 is compressed and deformed as the first elastic units 1231 and the second elastic units 1232 move closer to each other.

[0141] It is worth mentioning that the range of the angle between the first elastic unit 1231 and the second elastic unit 1232 of the elastic portion 1230 is not limited. The angle between the first elastic unit 1231 and the second elastic unit 1232 shown in the accompanying drawings, as well as the specific ranges of the angles between the first elastic unit 1231 and the second elastic unit 1232 and the horizontal plane are only for illustration and cannot limit the content and scope of the all-plastic liquid pump 100 of the present invention.

[0142] Preferably, the two elastic portions 1230 are held parallel to each other between the upper retaining portion 1210 and the lower retaining portion 1220. Optionally, the two elastic portions 1230 connect the upper retaining portion 1210 and the lower retaining portion 1220 in a non-parallel manner. Optionally, the first elastic unit 1231 and the second elastic unit 1232 of the elastic portion 1230 may be implemented to extend in a straight line.

[0143] Reference Figures 14 to 16DIn a specific embodiment of the present invention, the two elastic portions 1230 extend spirally from the upper retaining portion 1210 to the lower retaining portion 1220. Specifically, the first elastic unit 1231 and the second elastic unit 1232 of one of the two elastic portions 1230, held between the upper retaining portion 1210 and the lower retaining portion 1220, correspond to the first elastic unit 1231 and the second elastic unit 1232 of the other elastic portion 1230, respectively. The two elastic portions 1230 extend crosswise to form a spiral structure. When the upper retaining portion 1210 and the lower retaining portion 1220 are brought closer together by an external force, the two elastic portions 1230 are compressed and deformed such that the second elastic units 1232 approach each other.

[0144] Reference Figures 14 to 15B Preferably, the first elastic unit 1231 of the elastic portion 1230 extends obliquely downward, and the second elastic unit 32 of the elastic portion 1230 is parallel to the horizontal plane. The second elastic unit 1232 extending in parallel can limit the first elastic unit 1231 from excessive expansion and deformation after being squeezed. Figure 16A and Figure 16B The first elastic unit 1231 of the elastic portion 1230 extends obliquely downward, and the second elastic unit 32 of the elastic portion 1230 also extends obliquely downward, that is, an angle exists between the extension direction of the second elastic unit 32 and the horizontal plane. Those skilled in the art should understand that the specific embodiment of the helically extending elastic portion 1230 is merely an example and does not limit the content and scope of the all-plastic liquid pump 100 of the present invention.

[0145] Reference Figures 4 to 7 In this specific embodiment of the plastic spring 12 described in the present invention, the plastic spring 12 further includes at least one limiting portion 1240, wherein the limiting portion 1240 is connected to the two elastic portions 1230 spaced apart from each other, and the extension direction of the elastic portion 1230 is different from the extension direction of the elastic portion 1230, which is beneficial to limiting the deformation degree of the elastic portion 1230, avoiding the elastic portion 1230 from excessive elastic deformation and breakage, and is beneficial to extending the service life of the plastic spring 12.

[0146] Preferably, the limiting portion 1240 is provided at a location where the first elastic unit 1231 and the second elastic unit 1232 of the two elastic portions 1230 are connected. Optionally, the limiting portion 1240 is provided at the first elastic unit 1231 of the elastic portion 1230. Optionally, the limiting portion 1240 is provided at the second elastic unit 32 of the elastic portion 1230.

[0147] Reference Figures 4 to 6B In a specific embodiment of the present invention, the limiting portion 1240 of the plastic spring 12 is annular and is disposed around the two elastic portions 1230. The limiting portion 1240 is distributed on both sides of each elastic portion 1230. Figure 7 Optionally, the limiting portion 1240 of the plastic spring 12 is semicircular, and the openings of two adjacent limiting portions 1240 face opposite directions. The specific shape of the limiting portion 40 is not limited, and the limiting portion 40 can also be implemented as a broken line, square, diamond, triangle, ellipse, etc.

[0148] Preferably, the limiting portion 1240 of the plastic spring 12 is provided on the two elastic portions 1230 in a manner such that the extending direction thereof is parallel to the horizontal plane. Optionally, an inclined angle exists between the extending direction of the limiting portion 1240 and the horizontal plane.

[0149] It is worth mentioning that the specific implementation of the limiting portion 1240 of the plastic spring 12 is not limited. The limiting portion 1240 of the plastic spring 12 can be implemented as one, two, three or even more than three, and at least two limiting portions 1240 are arranged at intervals on the two elastic portions 1230. Preferably, the distances between adjacent limiting portions 1240 are equal. Optionally, the distances between adjacent limiting portions 1240 are unequal. The shape of the cross section of the limiting portion 1240 of the plastic spring 12 can be implemented as a triangle, a circle, a square, a diamond, a semicircle, etc. Those skilled in the art should understand that the specific implementation of the limiting portion 1240 of the plastic spring 12 disclosed in the specification and the drawings is merely an example and cannot be a limitation on the content and scope of the all-plastic liquid pump 100 of the present invention.

[0150] Reference Figure 8A and Figure 8BIn this specific embodiment of the all-plastic liquid pump 100 of the present invention, the plastic one-way valve 15 includes a fixing portion 151, at least one connecting portion 152, and a shielding portion 153. The fixing portion 151 has a flow channel 1501. The connecting portion 152 deformably extends from the bottom of the fixing portion 151 to the shielding portion 153. The connecting portion 152 and the shielding portion 153 are retained in the flow channel 1501 of the fixing portion 151. The fixing portion 151 is fixed to the pump housing 11 in such a manner that the shielding portion 153 can fit against the inner wall of the pump housing 11. The connecting portion 152 completely covers the upper end opening of the flow guide tube 30. The shielding portion 153 blocks the communication between the flow channel 30 of the flow guide tube 30 and the liquid storage chamber 101 of the pump housing 11. The shielding portion 153 can be driven to move up and down relative to the fixing portion 151 to allow the liquid to flow or block the liquid from flowing.

[0151] Specifically, by pressing the liquid collection cap 40 of the liquid pump 1000, the piston 13 moves downward, the pressure in the liquid storage chamber 101 increases, and the shielding portion 153 of the plastic one-way valve 15 fits tightly against the inner wall of the pump housing 11 under the action of the pressure difference, and closes the upper end opening of the guide tube 30. When the external force applied to the liquid collection cap 40 is removed, the spring 100 drives the piston to move upward, and the pressure in the liquid storage chamber 101 decreases. Under the action of the pressure difference, the shielding portion 153 of the plastic one-way valve 15 is pushed upward, and the shielding portion 153 moves upward relative to the fixed portion 151. The upper end opening of the guide tube 30 is opened, and the flow channel 1501 of the plastic one-way valve 15 connects the guide channel 301 of the guide tube 30 and the liquid storage chamber 101 of the pump housing 11. The liquid in the liquid containing space 201 of the container 200 can enter the liquid storage chamber 101 of the pump housing 11 from the guide channel 301 of the guide tube 30.

[0152] In a specific embodiment of the present invention, the fixing portion 151 of the plastic one-way valve 15 is mounted on the pump housing 11 by a clearance fit, and the pressure difference formed when the piston 13 is driven up and down cannot push the fixing portion 151 of the plastic one-way valve 15 to move relative to the pump housing 11. Preferably, the fixing portion 151 of the plastic one-way valve 15 is fixed to the pump housing 11 by gluing. Alternatively, the fixing portion 151 of the plastic one-way valve disc 15 is fixed to the pump housing 11 by a threaded connection. Those skilled in the art should understand that the specific embodiment of the plastic one-way valve 15 is merely an example and does not limit the content and scope of the all-plastic liquid pump 100 of the present invention.

[0153] In this specific embodiment of the all-plastic liquid pump 100 of the present invention, when the blocking portion 153 of the plastic one-way valve 15 is driven to move upward, the connecting portion 152 of the plastic one-way valve 15 is deformed. When the blocking portion 153 is in contact with the inner wall of the pump housing 11, the connecting portion 152 recovers its deformation.

[0154] Preferably, refer to Figure 8A and Figure 8B The connecting portion 152 of the plastic one-way valve 15 is implemented as one, that is, only one side of the blocking portion 153 is connected to the fixed portion 151. On the one hand, under the action of the pressure difference, the blocking portion 153 can quickly flip upward or downward relative to the fixed portion 151; on the other hand, when the blocking portion 153 moves upward relative to the fixed portion 151, the flow rate of the liquid allowed to pass through the circulation channel 1501 is maximized.

[0155] Optionally, the connecting portion 152 of the plastic one-way valve 15 can be implemented as two, three or more than three, and at least two connecting portions 152 are spaced apart and distributed around the shielding portion 153. Figure 8D The connecting parts 152 are implemented as three, spaced apart, with their ends connected to the shielding part 153 and the fixing part 151, respectively. When the shielding part 153 is driven upward, the connecting parts 152 deform, allowing liquid to flow through the channels between the shielding part 153, the connecting parts 152, and the fixing part 151. It should be understood by those skilled in the art that the specific embodiment of the connecting parts 152 of the plastic one-way valve 15 is merely an example and does not limit the content and scope of the all-plastic liquid pump 100 of the present invention.

[0156] In a specific embodiment of the present invention, the lower surface of the shielding portion 153 of the plastic one-way valve 15 is an arc-shaped surface, which helps the shielding portion 153 better seal the communication port between the pump housing 11 and the flow guide tube 30. For example, but not limited to, the shielding portion 153 is implemented as a hemispherical shape, or has a crescent-shaped cross-section. It should be understood by those skilled in the art that the lower surface of the shielding portion 153 can also be implemented as a plane, and the shielding portion 153 can also be implemented as a sheet-shaped, spherical, or other structure. The specific implementation of the shielding portion 153 is merely an example and does not limit the content and scope of the all-plastic liquid pump 100 described in the present invention.

[0157] It is worth mentioning that the plastic spring 12 and the plastic one-way valve 15 of the all-plastic liquid pump 100 of the present invention replace the metal spring and glass ball valve of the existing lotion pump, so that the all-plastic liquid pump 100 is made entirely of plastic material. The discarded all-plastic liquid pump 100 can be recycled and reused in its entirety without disassembly, thereby reducing the cost of recycling and reusing the all-plastic liquid pump 100.

[0158] Those skilled in the art will appreciate that the above embodiments are merely examples, and features of different embodiments may be combined with each other to obtain implementation methods that are easily conceivable based on the disclosure of the present invention but are not explicitly indicated in the drawings.

[0159] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A fully plastic liquid pump, characterized in that: include: a movable drainage member, wherein the movable drainage member has a drainage channel; a press-opening liquid cap, wherein the press-opening liquid cap has a liquid outlet channel, wherein the press-opening liquid cap is disposed on the movable drainage member in such a manner that the liquid outlet channel is connected to the drainage channel of the movable drainage member; and The cam is connected to the piston rod of the piston rod and the piston rod is connected with the piston rod of the piston rod, and the piston rod is connected with the piston rod of the piston rod. The cam is connected to the lower maintaining part and one of the second elastic units, the lowermost first elastic unit is connected to the lower maintaining part so that the lowermost first elastic unit is located between the lower maintaining part and another second elastic unit, and any one of the other first elastic units is located between two adjacent second elastic units, the plastic spring is compressed and deformed in such a way that the first elastic unit and the second elastic unit are close to each other, the piston is installed on the piston seat in a way that can block the flow hole of the piston seat, and the piston seat is installed on the movable guiding part in such a way that the guide channel is connected to the drainage channel of the movable guiding part, the plastic one-way valve is movably arranged on the pump housing, and the pump housing is arranged in the assembly housing, the plastic spring can drive the movable guiding part, the piston and the piston seat to move relative to the pump housing, and the drainage channel of the movable guiding part is conductively connected to the liquid storage chamber of the pump housing. 2 . The all-plastic liquid pump according to claim 1 , wherein a position where the elastic portion and the upper retaining portion are connected is located on a symmetry axis of the upper retaining portion. 3 . The all-plastic liquid pump according to claim 2 , wherein the position where the elastic portion and the lower retaining portion are connected is located on the symmetry axis of the lower retaining portion. The all-plastic liquid pump according to claim 1 , wherein the upper retaining portion and the lower retaining portion remain parallel. 5 . The all-plastic liquid pump according to claim 1 , wherein the shapes of the upper retaining portion and the lower retaining portion are selected from the group consisting of: circle, square, triangle, diamond, ellipse, and semicircular arc. 6 . The all-plastic liquid pump according to claim 1 , wherein the cross-sectional shape of the elastic portion is selected from the group consisting of: circle, semicircle, square, triangle, diamond, ellipse, and trapezoid.

7. The all-plastic liquid pump according to any one of claims 1 to 6, wherein the plastic one-way valve comprises a fixed portion, at least one connecting portion, and a shielding portion, wherein the fixed portion has a flow passage, wherein the connecting portion can deformably extend from the fixed portion to the shielding portion, and wherein the shielding portion is movably retained in the flow passage of the fixed portion.

8. The all-plastic liquid pump according to claim 7, wherein the fixing portion of the plastic one-way valve is fixed to the pump housing of the pump body by means of clearance fit, threaded connection or gluing. 9 . The all-plastic liquid pump according to claim 7 , wherein the lower surface of the shielding portion of the plastic one-way valve is an arc-shaped curved surface or a flat surface.

10. The all-plastic liquid pump according to claim 7, wherein the plastic one-way valve has one connecting portion, and the shielding portion is allowed to flip up and down relative to the fixing portion. 11 . The all-plastic liquid pump according to claim 7 , wherein the number of the connecting parts of the plastic one-way valve is at least two, and the at least two connecting parts are connected to the shielding part and the fixing part at intervals.

12. The all-plastic liquid pump according to claim 7, further comprising a flow guide tube, wherein the flow guide tube has a flow channel, wherein the flow guide tube is disposed in the pump housing, and the plastic one-way valve is disposed between the flow guide tube and the pump housing, and the opening of the flow channel is opened or closed by the plastic one-way valve.

13. A container with a fully plastic liquid pump, characterized in that: include: a container, wherein the container has a liquid containing space; and An all-plastic liquid pump, wherein the all-plastic liquid pump comprises a movable drainage piece, a press-discharge cap, a pump body and a guide tube, wherein the movable drainage piece has a drainage channel, wherein the press-discharge cap has a liquid outlet channel, wherein the guide tube has a guide channel, wherein the press-discharge cap is arranged on the movable drainage piece in such a manner that the liquid outlet channel is connected to the drainage channel of the movable drainage piece, wherein the pump body comprises a pump housing, a plastic spring, a piston, a piston seat, a plastic one-way valve and an assembly housing, wherein the pump housing has a liquid storage chamber, wherein the piston seat has a guide channel and is connected to the guide channel. A flow hole in the guide channel, wherein the plastic spring includes an upper maintaining portion, a lower maintaining portion and two independent elastic portions, wherein the upper maintaining portion extends horizontally, the lower maintaining portion extends horizontally, and the two elastic portions can be deformed and bent from the upper maintaining portion to the lower maintaining portion, the upper maintaining portion, the lower maintaining portion and the elastic portion are integrally formed, and the two elastic portions respectively include a plurality of first elastic units and a plurality of second elastic units, the first elastic unit and the second elastic unit are connected end to end and have different extension directions, the first elastic unit extends obliquely, the second elastic unit extends horizontally, and the uppermost The first elastic unit is connected to the upper maintaining part so that the top first elastic unit is located between the upper maintaining part and one of the second elastic units, and the bottom first elastic unit is connected to the lower maintaining part so that the bottom first elastic unit is located between the lower maintaining part and another second elastic unit. Any one of the other first elastic units is located between two adjacent second elastic units, and the plastic spring is compressed and deformed in such a way that the first elastic unit and the second elastic unit are close to each other, and the piston is deformed in such a way that the flow hole of the piston seat can be covered. The piston seat is installed on the movable guide member in such a way that the guide channel is connected to the guide channel of the movable guide member. The pump housing is arranged on the assembly housing. The plastic spring can drive the movable guide member, the piston and the piston seat to move relative to the pump housing. The guide channel of the movable guide member is conductively connected to the liquid storage chamber of the pump housing. The plastic one-way valve is movably arranged between the pump housing and the guide tube. The assembly housing is arranged on the container. The guide channel of the guide tube is connected to the liquid containing space of the container.

14. The container with an all-plastic liquid pump according to claim 13, wherein the position where the elastic portion is connected to the upper maintaining portion is located on the symmetry axis of the upper maintaining portion. 15 . The container with an all-plastic liquid pump according to claim 14 , wherein the position where the elastic portion is connected to the lower retaining portion is located on the symmetry axis of the lower retaining portion.

16. The container with an all-plastic liquid pump according to claim 13, wherein the upper maintaining portion and the lower maintaining portion remain parallel.

17. The container with an all-plastic liquid pump according to claim 13, wherein the shapes of the upper maintaining portion and the lower maintaining portion are selected from the group consisting of: circle, square, triangle, diamond, ellipse, and semicircular arc.

18. The container with an all-plastic liquid pump according to claim 13, wherein the cross-sectional shape of the elastic portion is selected from the group consisting of circle, semicircle, square, triangle, diamond, ellipse, and trapezoid.

19. A container with an all-plastic liquid pump according to any one of claims 13 to 18, wherein the plastic one-way valve comprises a fixed portion, at least one connecting portion and a shielding portion, wherein the fixed portion has a flow channel, wherein the connecting portion can be deformably extended from the fixed portion to the shielding portion, and wherein the shielding portion is movably retained in the flow channel of the fixed portion.

20. The container with an all-plastic liquid pump according to claim 19, wherein the fixing portion of the plastic one-way valve is fixed to the pump housing of the pump body by means of clearance fit, threaded connection or gluing.

21. The container with an all-plastic liquid pump according to claim 19, wherein the lower surface of the shielding portion of the plastic one-way valve is an arc-shaped curved surface or a flat surface.

22. The container with an all-plastic liquid pump according to claim 19, wherein the plastic one-way valve has only one connecting portion, and the shielding portion is allowed to be flipped up and down relative to the fixing portion.

23. The container with an all-plastic liquid pump according to claim 19, wherein the number of the connecting parts of the plastic one-way valve is at least two, and the at least two connecting parts are connected to the shielding part and the fixing part at intervals.

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