CN114148624A

CN114148624A - All-plastic liquid pump and container with same

Info

Publication number: CN114148624A
Application number: CN202010935393.0A
Authority: CN
Inventors: 汤克锋
Original assignee: Yuyao Lyuya Tools Co ltd
Current assignee: Yuyao Lyuya Tools Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2022-03-08

Abstract

The invention discloses an all-plastic liquid pump and a container with the same, 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 parts of the all-plastic liquid pump are all made of plastic materials, the all-plastic liquid pump can be recycled and reused completely without disassembly, the cost for recycling and reusing the all-plastic liquid pump is reduced, the utilization rate of resources is improved, and the environment is protected better.

Description

All-plastic liquid pump and container with same

Technical Field

The invention relates to a liquid pump, in particular to an all-plastic liquid pump and a container with the same.

Background

The emulsion pump is installed in the splendid attire container, is the common push type in daily life and gets liquid device, and the emulsion pump is widely applied to daily chemical products, say, the container of products such as splendid attire hand sanitizer, antiseptic solution, shampoo, shower bath, foundation liquid also is applicable to fields such as medicine, food, health products, and the emulsion pump convenient operation receives each producer and consumer's favor.

Referring to fig. 1A and 1B, a lotion pump 100P includes a pump body 110P, a suction pipe 120P, a discharge pipe 130P, and a pressing head 140P, wherein 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 a fitting 116. The pump housing 111P has an accommodating space, and the inlet ball valve 112P, the spring 113P, and the hollow plunger 115P are disposed in the accommodating space of the pump housing 111P. The spring 113P is attached to the hollow plunger 115P, the piston 114P is fitted to the hollow plunger 115P, and the liquid outlet pipe 130P is attached to the pump housing 111P so as to communicate with the hollow plunger 115P. The intake ball valve 112P is movably held between the suction pipe 120P and the pump housing 111P. The pressing head 140P is mounted on the liquid outlet tube 130P, and the pump housing 111P is mounted on a liquid bottle 200P by the fitting 16. When the pressing head 140P of the emulsion pump 100P is pressed, the piston 114P moves downward, the spring 113P compresses, the pressure in the accommodating space of the pump housing 111P increases, the liquid inlet ball valve 112P closes the opening of the liquid suction pipe 120P, the liquid outlet hole of the hollow plunger 115P is opened, and the liquid in the accommodating space of the pump housing 111P enters the liquid outlet pipe 130P from the hollow plunger 115P under the action of the pressure difference 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 the original position, the piston 114P moves upward, the liquid outlet hole of the hollow plunger 115P is closed, the pressure in the accommodating space of the pump housing 111P decreases, the liquid inlet ball valve 112P opens the opening of the liquid suction pipe 120P, and the liquid in the liquid bottle 200 enters the accommodating space of the pump housing 111P from the liquid suction pipe under the action of the pressure difference. By repeatedly pressing the pressing head 140P, the liquid in the bottle 200P can be continuously taken out.

The existing spring of the emulsion pump 100P is made of metal materials, so that the spring can be conveniently and frequently switched between a compression state and an initial state for a long time, and the metal spring has enough elasticity and can rapidly drive the liquid outlet pipe, the piston and the hollow plunger to move upwards. In addition, the liquid inlet ball valve of the emulsion pump 100P is a glass ball, and the glass ball moves up and down under the action of pressure difference to communicate the liquid suction pipe with the pump body or to block the communication between the liquid suction pipe and the pump body. The emulsion pump 100P is made of plastic except for the spring and the inlet ball valve. That is, the conventional emulsion pump 100P is made of at least three materials. In order to protect the environment and save resources, the waste emulsion pump 100P can be recycled, and the emulsion pump 100P made of at least three materials can be recycled only after being disassembled. Specifically, after the emulsion pump 100P is disassembled, the spring made of metal, the liquid inlet ball valve made of glass and other parts made of plastic are classified and recycled, so that the recycling cost of the emulsion pump 100P is increased, and the emulsion pump is not beneficial to implementing the concept of environmental protection. In addition, even after classification, at least three processes are required to be adopted for processing three different materials, so that the split emulsion pump 100P can be completely recycled, the process difficulty of recycling the emulsion pump 100P is increased, and the labor cost and material cost for recycling the emulsion pump 100P are further increased. In addition, in the use process of the conventional lotion pump 100P, the metal spring is always soaked in the liquid in the accommodating space of the pump housing 111P, and after the spring is soaked for a long time, the spring is likely to react with the liquid to pollute the liquid in the accommodating space.

Disclosure of Invention

The invention aims to provide an all-plastic liquid pump and a container with the same, wherein the all-plastic liquid pump is completely made of plastic materials, and the all-plastic liquid pump can be recycled and reused as a whole without being disassembled, so that the recycling and reusing cost of the all-plastic liquid pump is reduced, the utilization rate of resources is improved, and the environment is protected better.

Another object of the present invention is to provide an all plastic liquid pump and a container with an all plastic liquid pump, wherein the all plastic liquid pump is made of only one material, which reduces the requirement for the recycling process after recycling.

Another object of the present invention is to provide an all plastic liquid pump and a container with the same, wherein the all plastic liquid pump employs a plastic spring and a plastic check valve, and the plastic spring, the plastic check valve and other parts of the all plastic liquid pump are all made of plastic materials, so as to facilitate subsequent complete recycling.

Another object of the present invention is to provide an all-plastic liquid pump and a container with the same, 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 is flexibly extended from the upper maintaining portion to the lower maintaining portion, and the elastic portion is elastically deformed by being pressed and accumulates elastic potential energy when the upper maintaining portion and the lower maintaining portion are driven to approach each other, and releases the elastic potential energy and drives the upper maintaining portion and the lower maintaining portion to return to initial positions when external force applied to the upper maintaining portion and the lower maintaining portion is cancelled. The plastic spring can be integrally formed in an injection molding mode, the manufacturing cost is low, the production cycle is fast, and the production cost of the all-plastic liquid pump is favorably reduced.

Another objective 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 fixing portion, a connecting portion and a shielding portion, wherein the fixing portion is fixed to a pump housing of the all-plastic liquid pump, the connecting portion is flexibly connected to the fixing portion and the shielding portion, and the shielding portion can be driven to move up and down relative to the fixing portion to allow or block liquid to pass through.

In one aspect, the present invention provides an all plastic liquid pump comprising:

a movable flow guide, wherein the movable flow guide has a flow guide channel;

the pressing liquid outlet cap is provided with a liquid outlet channel, and the pressing liquid outlet cap is arranged on the movable drainage piece in a manner that the liquid outlet channel is communicated with the drainage channel of the movable drainage piece; and

a pump body, wherein the pump body comprises a pump housing, a plastic spring, a piston seat, a plastic check valve and a mounting housing, wherein the pump housing has a reservoir, wherein the piston seat has a guide channel and a flow hole communicated with the guide channel, wherein the plastic spring comprises an upper maintaining portion, a lower maintaining portion and at least one elastic portion, wherein two of the elastic portions flexibly extend 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, the piston is mounted to the piston seat in such a manner as to shield the flow hole of the piston seat, the piston seat is mounted to the movable drain in such a manner that the guide channel is communicated with the drain channel of the movable drain, the plastic one-way valve is movably arranged in the pump housing, the pump housing is arranged in the assembly housing, the plastic spring can drive the movable drainage piece, the piston and the piston seat to move relative to the pump housing, and the drainage channel of the movable drainage piece is connected with the liquid storage cavity of the pump housing in a conduction mode.

According to an embodiment of the present invention, wherein the elastic parts are implemented in two, two of the elastic parts are held between the upper maintaining part and the lower maintaining part with a space.

According to an embodiment of the present invention, a position where the elastic part and the upper maintaining part are connected is located on a symmetry axis of the upper maintaining part.

According to an embodiment of the present invention, a position where the elastic part and the lower maintaining part are connected is located on a symmetry axis of the lower maintaining part.

According to one embodiment of the invention, the upper and lower retaining portions are kept parallel.

According to an embodiment of the invention, the upper retaining portion and/or the lower retaining portion extend in a direction parallel to a horizontal plane.

According to one embodiment of the invention, the upper and/or lower retaining portions extend at an angle to the horizontal.

According to one embodiment of the invention, the shape of the upper and lower retaining portions is selected from: circular, square, triangular, rhombic, oval and semi-circular arc.

According to one embodiment of the invention, the cross-section of the resilient part has a shape selected from the group consisting of: circular, semicircular, square, triangular, rhombic, elliptical and trapezoidal.

According to one embodiment of the invention, the elastic portion of the plastic spring is implemented as one, the elastic portion being of a corrugated tubular structure.

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

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

According to an embodiment of the present invention, the elastic part 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 are connected to the upper maintaining part and the lower maintaining part by at least one first elastic unit and at least one second elastic unit, wherein the first elastic unit of the elastic part extends obliquely downward and the second elastic unit of the elastic part is parallel to a horizontal plane.

According to an 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 by 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 an included angle exists between an extending direction of the second elastic unit of the elastic portion and a horizontal plane.

According to one embodiment of the invention, the all-plastic liquid pump further comprises at least one limiting portion connected to two adjacent elastic portions.

According to an embodiment of the invention, the extension direction of the restriction is parallel to a horizontal plane.

According to one embodiment of the invention, the restriction extends in a direction which is inclined with respect to a horizontal plane.

According to one embodiment of the invention, the shape of the restriction is selected from: the shape group is composed of a circular ring shape, a semi-circular arc shape, a broken line shape, a square shape, a diamond shape, a triangle shape and an oval shape.

According to an embodiment of the present invention, the all-plastic liquid pump further comprises at least one restriction portion, and the restriction portion is connected to two adjacent elastic portions.

According to an embodiment of the present invention, the plastic check valve includes a fixing portion, at least one connecting portion and a shielding portion, wherein the fixing portion has a flow channel, wherein the connecting portion is flexibly extended from the fixing portion to the shielding portion, and wherein the shielding portion is movably retained in the flow channel of the fixing portion.

According to an embodiment of the present invention, the fixing portion of the plastic check valve is fixed to the pump housing of the pump main by a clearance fit, a threaded connection, or an adhesive.

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

According to an embodiment of the present invention, the all-plastic liquid pump further comprises a flow guide tube, wherein the flow guide tube has a flow guide channel, wherein the flow guide tube is disposed in the pump housing, and the plastic check valve is disposed between the flow guide tube and the pump housing, and an opening of the flow guide channel is opened or closed by the plastic check valve.

According to an embodiment of the present invention, the connecting portion of the plastic check valve is one, and the shielding portion is allowed to be turned upside down with respect to the fixing portion.

According to one embodiment of the present invention, the connecting portions of the plastic check valve are implemented in at least two, and the at least two connecting portions are connected to the shielding portion and the fixing portion with a space therebetween.

In accordance with one aspect of the present invention, there is provided a container with an all plastic liquid pump, comprising:

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 member, a pressing liquid taking cap, a pump main body and a flow guide pipe, wherein the movable drainage member is provided with a drainage channel, the pressing liquid taking cap is provided with a liquid outlet channel, the flow guide pipe is provided with a flow guide channel, the pressing liquid outlet cap is arranged on the movable drainage member in a way that the liquid outlet channel is communicated with the drainage channel of the movable drainage member, the pump main body comprises a pump housing, a plastic spring, a piston seat, a plastic one-way valve and an assembling shell, the pump housing is provided with a liquid storage cavity, the piston seat is provided with a guide channel and a flow through hole communicated with the guide channel, the plastic spring comprises an upper maintaining part, a lower maintaining part and at least one elastic part, wherein two of the elastic portions are flexibly extended from the upper maintaining portion to the lower maintaining portion in a deformable manner, the upper maintaining portion, the lower maintaining portion and the elastic portions are integrally formed, the piston is mounted to the piston seat in a manner that the piston can block the flow hole of the piston seat, the piston seat is mounted to the movable flow guide in a manner that the guide passage is communicated with the flow guide passage of the movable flow guide, the pump housing is disposed in the assembly housing, the plastic spring can drive the movable flow guide, the piston and the piston seat to move relative to the pump housing, the flow guide passage of the movable flow guide is conductively connected to the reservoir chamber of the pump housing, the plastic check valve is movably disposed between the pump housing and the flow guide pipe, the assembly housing is disposed in the container, the guide channel of the guide pipe is communicated with the liquid containing space of the container.

Drawings

Fig. 1A is a perspective view of a conventional lotion bottle.

Fig. 1B is a schematic view of a cross-sectional view of the lotion bottle according to the related art.

FIG. 2 is a perspective view of a container with an all plastic liquid pump according to a preferred embodiment of the invention.

FIG. 3 is an exploded view of the all plastic liquid pump with the container of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

Fig. 5 is a schematic view illustrating the plastic spring of the all-plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 6A is a schematic view of a variation of the plastic spring of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 6B is a schematic view of a variation of the plastic spring of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 6C is a schematic view of a variation of the plastic spring of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 6D is a schematic view of a variation of the plastic spring of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 7 is a schematic view of a variation of the plastic spring of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 8A is a schematic diagram of a plastic check valve of the all-plastic liquid pump according to the preferred embodiment of the present invention.

Fig. 8B is a schematic structural view of the plastic check valve of the all-plastic liquid pump according to the above preferred embodiment of the present invention.

Fig. 8C is a schematic block diagram of a modified embodiment of the plastic check valve of the all-plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 8D is a schematic block diagram of a variation of the plastic check valve of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of the container with an all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 10A is a schematic view showing the use of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 10B is a schematic view showing the use of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 11A is a schematic view of the all plastic liquid pump in a locked state in a containment vessel with the all plastic liquid pump according to the preferred embodiment of the invention.

FIG. 11B is a schematic view of the all plastic liquid pump in an unlocked state of the container with the all plastic liquid pump according to the preferred embodiment of the present invention.

Fig. 12 is a schematic view showing the construction of the container with an all-plastic liquid pump according to another preferred embodiment of the present invention.

FIG. 13 is an exploded view of the all plastic liquid pump with its container according to the preferred embodiment of the present invention.

FIG. 14 is a schematic diagram of the plastic spring of the all plastic liquid pump with the container of the all plastic liquid pump according to the preferred embodiment of the invention.

FIG. 15A is a schematic diagram of the plastic spring of the all plastic liquid pump with the container of the all plastic liquid pump according to the preferred embodiment of the invention.

FIG. 15B is a schematic diagram of the plastic spring of the all plastic liquid pump with the container of the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 16A is a schematic diagram of a modified embodiment of the plastic spring of the all plastic liquid pump with a container for the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 16B is a schematic diagram of the above-described modified embodiment of the plastic spring of the all-plastic liquid pump with a container for the all-plastic liquid pump according to the above-described preferred embodiment of the present invention.

FIG. 16C is a schematic diagram of another variation of the plastic spring of the all plastic liquid pump with a container for the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 16D is a schematic cross-sectional view of a variation of the plastic spring of the all plastic liquid pump with its container according to the preferred embodiment of the invention.

FIG. 17 is a schematic cross-sectional view of the container with an all plastic liquid pump according to the preferred embodiment of the present invention.

Fig. 18A is a schematic view showing the use of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention.

Fig. 18B is a schematic view showing the use of the container with the all-plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 19 is a schematic view of the all plastic liquid pump in a locked state of the container with the all plastic liquid pump according to the preferred embodiment of the present invention.

FIG. 20 is a schematic view of a variation of the all plastic liquid pump with the container of the all plastic liquid pump according to the preferred embodiment of the invention.

FIG. 21 is a schematic view of the use of the container with an all plastic liquid pump according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 10B and 21 of the specification, a container 1000 with an all-plastic liquid pump according to some preferred embodiments of the present invention will be described in the following description, wherein the container 1000 with the 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 to the container 200, and the liquid in a liquid containing space 201 of the container 200 can be obtained by pressing the all-plastic liquid pump 100. Moreover, the all-plastic liquid pump 100 is made of a plastic material, and the all-plastic liquid pump 100 can be recycled as a whole without being disassembled, so that the recycling cost of the all-plastic liquid pump 100 is reduced, the resource utilization rate is improved, and the environment is protected better.

In this embodiment of the present invention, the all-plastic liquid pump 100 can prevent external contaminants from entering the liquid containing space 201 of the container 200, so as to prevent the liquid contained in the container 1000 with the all-plastic liquid pump from being contaminated.

Specifically, referring to fig. 3, the all-plastic liquid pump 100 includes a pump body 10, a movable flow guiding member 20, a flow guiding pipe 30 and a pressing liquid taking cap 40, wherein the pump body 10 has a liquid storage cavity 101, the movable flow guiding member 20 has a flow guiding channel 201, the flow guiding pipe 30 has a flow guiding channel 301, and the pressing liquid taking cap 40 has a liquid outlet channel 401. The movable drainage member 20 is movably mounted on the pump main body 10, and the drainage channel 201 of the movable drainage member 20 is connected to the reservoir 101 of the pump main body 10 in a conducting manner. The guide tube 30 is installed in the pump body 10, and the guide passage 301 of the guide tube 30 is communicably connected to the reservoir chamber 101 of the pump body 10. The pump body 10 is detachably attached to the container 200, and the guide passage 301 of the guide tube 30 is communicated with the liquid containing space 201 of the container 200. The pressing liquid taking cap 40 is arranged on the movable drainage member 20 in a manner that the liquid outlet channel 401 is communicated with the movable drainage member 20.

Further, referring to fig. 9 to 10B, the movable drain member 20 has an outer fitting wall 210, and the pump body 10 has an inner fitting wall 110, wherein the movable drain member 20 is movably mounted to the pump body 10 in such a manner that the outer fitting wall 210 corresponds to the inner fitting wall 110 of the pump body 10, and a movable gap 202 is formed between the outer fitting wall 210 of the movable drain member 20 and the inner fitting wall 110 of the pump body 10, so that the movable drain member 20 can be easily driven and can move up and down with respect to the pump body 10. In the process that the movable drainage member 20 moves up and down relative to the pump main body 10, the liquid in the liquid containing space 201 of the container 200 can sequentially flow out of the liquid outlet channel 401 of the pressing liquid taking cap 40 after passing through the flow guide channel 301 of the flow guide pipe 30, the liquid storage cavity 101 of the pump main body 10 and the drainage channel 201 of the movable drainage member 20.

Further, the pressing liquid taking cap 40 is disposed above the pump main body 10 in a manner of shielding the movable gap 202, so as to prevent an opening of the movable gap 202 from being exposed, and further prevent external liquid from gradually entering the liquid storage cavity 101 of the pump main body 10 and the liquid containing space 201 of the container 200 from the opening of the movable gap 202, and further prevent the liquid in the liquid storage cavity 101 and the liquid containing space 201 from being contaminated. That is, the opening of the movable gap formed between the outer fitting wall 210 of the movable drain member 20 and the inner fitting wall 110 of the pump main body 10 is hidden in the dirt-repellent space 401 of the liquid-extracting cap 40.

The pump body 10 includes a pump housing 11, a plastic spring 12, a piston 13, a piston seat 14, a plastic check valve 15, and a fitting housing 16, wherein the reservoir 101 is formed in the pump housing 11, wherein the piston seat 14 has a guide passage 1401 and a flow hole 1402 communicated with the guide passage 1401, and wherein the fitting housing 16 has a fitting passage 1601.

The piston 13 is attached to the piston holder 14 so as to block the flow hole 1402 of the piston holder 14, and the piston 13 is movable relative to the piston holder 14. The outer wall of the piston 13 can be attached to the inner wall of the pump housing 11 to block the flow of liquid and air. The piston seat 14 is installed to the movable drain 20 in such a manner that the guide passage 1401 is communicated with the drain passage 201 of the movable drain 20. The plastic spring 12 is sleeved on the movable drainage piece 20, and the movable drainage piece 20, the piston 13 and the piston seat 14 can be driven to move by the plastic spring 12. The pump housing 11 is provided to the delivery pipe 30. Preferably, the delivery pipe 30 is detachably mounted to the pump housing 11 of the pump body 10. Alternatively, the delivery tube 30 and the pump housing 11 of the pump body 10 are integrally formed. The plastic check valve 15 is movably disposed between the pump housing 11 and the fluid guide tube 30, and the plastic check valve 15 can close or open the opening of the fluid guide tube 30. The pump housing 11 and the movable flow guide 20 are mounted to the mounting passage 1601 of the mounting case 16, and the all-plastic liquid pump 100 is detachably mounted to the container 200 by the mounting case 16. Preferably, the mounting housing 16 is mounted to the container 200 by a threaded connection.

Referring to fig. 9 to 10B, in this specific embodiment of the present invention, the movable drainage member 20 includes a drainage portion 21, an abutting portion 22, and a holding portion 23, wherein the drainage channel 201 is formed at the drainage portion 21, wherein the outer fitting wall 210 is formed at an outer surface of the holding portion 23, wherein the abutting portion 22 extends from the drainage portion 21 to the holding portion 23, the holding portion 23 is located at an outer side of the drainage portion 21, and an upper mounting space and a lower mounting space are formed between the drainage portion 21, the abutting portion 22, and the holding portion 23. The pressing liquid-taking cap 40 is mounted to the upper mounting space of the movable drainage member 20. The plastic spring 12 is held in the lower mounting space of the movable drain 20 so as to be mounted to the drain 21.

The fitting housing 16 of the pump main body 10 includes a fitting portion 161 and a stopper portion 162 extending upward from the fitting portion 161, wherein the fitting portion 161 is mounted to the pump housing 11, and the inner fitting wall 110 is formed on an inner surface of the stopper portion 162. The stopper portion 162 is fitted to the movable drain member 20 in such a manner that the inner surface thereof corresponds to the outer surface of the holding portion 23 of the movable drain member 20, and the movable gap 202 is formed between the outer surface of the holding portion 23 of the movable drain member 20 and the inner surface of the stopper portion 162 of the fitting housing 16.

Referring to fig. 9 to 10B, the pressing cap 40 includes a pressing liquid-ejecting portion 41, a mounting portion 42 and a dirt-blocking portion 43, wherein the mounting portion 42 extends downward from the pressing liquid-ejecting portion 42, the liquid outlet channel 401 is formed between the pressing liquid-ejecting portion 41 and the mounting portion 42, the dirt-blocking portion 43 extends downward from the pressing liquid-ejecting portion 41, the dirt-blocking portion 43 is located outside the mounting portion 42, and a dirt-preventing space 402 with a downward opening is formed between the dirt-blocking portion 43 and the mounting portion 42. The pressing cap 40 is held above the movable drain member 20 and the pump body 10 so that the mounting portion 42 is provided in the upper mounting space of the movable drain member 20. The holding part 23 of the movable drainage member 20 is positioned between the mounting part 42 and the dirt blocking part 43 of the pressing liquid taking cap 40, and the dirt blocking part 43 of the pressing liquid taking cap 40 is positioned outside the holding part 23 of the movable drainage member 20. The end of the stopper portion 162 of the fitting housing 16 of the pump body 10 enters the dirt-repellent space 402 of the pressing liquid-extracting cap 40, and the dirt blocking portion 43 of the pressing liquid-extracting cap 40 is located outside the stopper portion 162 of the fitting housing 16.

In other words, the liquid taking cap 40 is covered on the movable drain 20 and the upper portion of the fitting housing 16 of the pump main body 10 in such a manner that the opening of the dirt-repellent space 402 faces downward, and the liquid taking cap 40 covers the opening of the movable gap 202 formed between the movable guide 20 and the fitting housing 16, and changes the extending direction of the movable gap 202. The horizontal position of the opening of the dirt-repellent space 402 of the liquid-extracting cap 40 attached to the movable drain 20 and the pump body 10 is lower than the horizontal position of the opening of the movable gap 202. Thus, when the user squeezes the pressing liquid taking cap 40 with a wet hand to take liquid, water carried by the hand of the user can only flow along the outer wall of the dirt blocking part 43 of the pressing liquid taking cap 40, the outer wall of the assembling shell 16 of the pump main body 10 and the outer wall of the container 200 and cannot enter the all-plastic liquid pump 100 and the container 200, so that the liquid in the all-plastic liquid pump 100 and the container 200 is prevented from being polluted by external pollutants, and the safety and reliability of the all-plastic liquid pump 100 and the container 1000 with the all-plastic liquid pump are guaranteed. It is worth mentioning that the liquid-extracting cap 40 always covers the opening of the movable gap 202 no matter whether the liquid-extracting cap 40 and the pump body 10 are in a relatively static state or a relatively moving state.

That is, the pressing cap 40 and the pump body 10 always shield the outer fitting wall 210 of the movable drain member 20. Specifically, the part of the movable drainage member 20 above the pump body 10 is shielded by the pressing liquid taking cap 40, and the movable drainage member 20 is hidden in the dirt-proof 40 and the inner space of the pump body 10, so as to prevent external contaminants, such as dust, from adhering to the surface of the movable drainage member 20, and further prevent the external contaminants from entering the inside of the pump body 10 to contaminate the liquid contained in the pump body 20.

Preferably, the dirt blocking portion 43 of the liquid pressing and fetching cap 40 is in clearance fit with the limiting portion 162 of the assembling housing 16 of the pump main body 10, and in the process that the liquid pressing and fetching cap 40 is driven to move downwards relative to the assembling housing 16, the liquid pressing and fetching cap 40 can scrape off the liquid on the outer surface of the limiting portion 162 of the assembling housing 16, so as to prevent the liquid remaining on the outer surface of the assembling housing 16 from generating steam and entering the inner space of the pump main body 10, and further facilitate preventing external contaminants from entering the interior of the all-plastic liquid pump 100 and the container 200.

In some embodiments of the present invention, the push cap 40 of the all plastic fluid pump 100 is removably mounted to the movable drain 20. Preferably, the cap 40 is stably mounted to the movable drainage member 20 by a clearance fit. Optionally, the cap 40 is stably mounted to the active drainage member 20 by means of a screw connection. In one embodiment of the present invention, the push cap 40 and the movable drainage member 20 are integrally formed.

In this particular 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 liquid in the pump body 10 and the container 200 from being contaminated.

Specifically, referring to fig. 3, 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 an outer wall of the bearing portion 171, wherein the bearing portion 171 has a receiving cavity 1701 and a mounting opening 1702 communicating with the receiving cavity 1711. The bearing portion 171 of the spring bearing base 17 is held in the reservoir 101 of the pump housing 11 such that the support arm 172 is attached to the upper edge of the pump housing 11. The movable drainage member 20 is held in the accommodation chamber 1701 of the carrier 171 in such a manner that the lower end of the drainage portion 21 is movably held in the fitting opening 1702 of the carrier 171. The upper end of the spring 11 sleeved on the drainage portion 21 of the movable drainage member 20 is abutted against the abutting portion 22 of the movable drainage member 20, and the lower end of the plastic spring 12 is abutted against the bottom of the bearing portion 171 of the spring bearing seat 17. The piston 13 and the piston seat 14 are located below the bearing portion 171 of the spring support seat 17.

In the process of using the all-plastic liquid pump 100, the pressing liquid taking cap 40 is pressed downwards, the pressing liquid taking cap 40 and the movable drainage piece 20 connected to the pressing liquid taking cap 40 move downwards relative to the pump body 10, and the abutting part 23 of the movable drainage piece 20 and the bearing part 171 of the spring support seat 17 extrude the plastic spring 12. The drainage portion 21 of the movable drainage member 20 pushes the piston 13 and the piston seat 14 to move downward. The friction between the outer wall of the piston 13 and the inner wall of the pump housing 11 resists the downward movement speed of the piston 13, the piston seat 14 moves downward relative to the piston 13, the flow hole 1402 of the piston seat 14 is exposed, and the flow hole 1402 communicates the guide passage 1401 of the piston seat 14 and the reservoir 101 of the pump housing 11. The pressure in the liquid storage cavity 101 below the piston 13 is increased, 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 from the flow hole 1402 of the piston seat 14, and after passing through the flow guide channel 201 of the movable flow element 20, flows out from the liquid outlet channel 401 of the pressing and liquid taking cap 40.

When the pressing force applied to the liquid taking cap 40 is removed, the force of the plastic spring 12 tending to restore the initial position drives the movable drainage 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. The pressure in the reservoir 101 below the piston 13 decreases. The plastic check valve 15 is opened, and the guide passage 301 of the guide tube 30 is communicated with the reservoir 101 of the pump housing 11. Under the action of the pressure difference, the liquid in the liquid containing space 201 of the container 200 is pressed into the liquid storage cavity 101 of the pump housing 11 from the flow guide channel 301 of the liquid guide tube 30.

The plastic spring 12 is held above the plunger 13, and the liquid entering the reservoir 101 of the pump housing 11 is blocked by the plunger 13, so that the plastic spring 12 is never in contact with the liquid. In this way, the plastic spring 12 is prevented from being corroded, which is further beneficial to ensuring the purity of the liquid in the liquid storage cavity 101 of the all-plastic liquid pump 100 and the liquid containing space 201 of the container 200.

Further, referring to fig. 9 to 11B, the all-plastic liquid pump 100 can be switched between a locked state and an unlocked state, the pressing liquid taking cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 in the locked state cannot be driven to move, and the container 1000 with the all-plastic liquid pump is convenient to store and transport; the liquid-taking pressing cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 in the unlocked state can be driven to move relative to the pump main body 10, so that a user can conveniently press and take liquid.

The pressing liquid-taking cap 40 of the all-plastic liquid pump 100 further comprises a locking part 44, wherein the locking part 44 extends downwards from the pressing liquid-taking part 41, and the locking part 44 is located between the mounting part 42 and the dirt blocking part 43. The locking portion 44 of the liquid extraction cap 40 and the stopper portion 162 of the fitting housing 16 of the pump main body 10 are detachably connected, so that the all-plastic liquid pump 100 can be switched between the locked state and the unlocked state.

Referring to fig. 11A, in a specific embodiment of the present invention, the locking portion 44 of the pressing cap 40 is provided with a limiting protrusion, the limiting portion 162 of the mounting housing 16 has a longitudinal channel and a transverse channel communicated with the longitudinal channel, and the longitudinal channel and the transverse channel are communicated with the mounting channel 1601. The limiting protrusion of the locking part 44 of the pressing liquid taking cap 40 can move between the longitudinal channel and the transverse channel. The longitudinal channel passes through the limiting portion 162 of the assembling housing 16 up and down, and when the limiting protrusion of the locking portion 44 of the pressing liquid-extracting cap 40 is located in the longitudinal channel, the pressing liquid-extracting cap 40 and the movable drainage member 20 can be driven to move up and down, that is, the pressing liquid-extracting cap 40 is in the unlocked state. When the stopper protrusion of the locking portion 44 of the liquid-extracting cap 40 is located at the lateral channel and the stopper protrusion is located at one side of the longitudinal channel, the inner wall of the fitting housing 16 defining the lateral channel restricts the stopper protrusion of the locking portion 44 of the liquid-extracting cap 40. At this time, the liquid-extracting cap 40 is fastened to the mounting housing 16, and the liquid-extracting cap 40 and the movable drainage member 20 cannot move relative to the pump main body 10, that is, the all-plastic liquid pump 100 is in the locked state.

Further, the all-plastic liquid pump 100 can be switched between the locked state and the unlocked state by rotating the pressing cap 40. Specifically, the all-plastic liquid pump 100 in the locked state is switched to the unlocked state by rotating the pressing liquid-extracting cap 40 of the all-plastic liquid pump 100 so that the limiting protrusion of the locking portion 44 of the pressing liquid-extracting cap 40 enters the longitudinal channel from the transverse channel. At this time, the compressed plastic spring 12 releases the elastic potential energy and springs up the movable drainage member 20 and the pressing liquid taking cap 40. The liquid-taking cap 40 is pressed on the full-plastic liquid pump 100 in the unlocked state, the liquid-taking cap 40 and the movable drainage member 20 are moved downwards, the limiting protrusion of the locking part 44 of the liquid-taking cap 40 is pressed on the longitudinal channel, namely, the longitudinal channel can guide the movement of the liquid-taking cap 40 and the movable drainage member 20, when the limiting protrusion moves to a position corresponding to the transverse channel, the liquid-taking cap 40 is rotated, the limiting protrusion enters the transverse channel from the longitudinal channel, and the full-plastic liquid pump 100 is switched from the unlocked state to the locked state. That is, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by the snap-fit connection of the push-to-take cap 40 and the fitting housing 16 of the pump body 10.

In a specific embodiment of the present invention, the limiting protrusion may also be provided to the limiting portion 162 of the fitting housing 16 of the pump body 10, and the longitudinal channel and the lateral channel are provided to the locking portion 44 of the pressing cap 40.

Referring to fig. 11B, in an embodiment of the present invention, the locking portion 44 of the pressing cap 40 is provided with an external thread, and the limiting portion 162 of the mounting housing 16 of the pump body 10 is provided with an internal thread matching the external thread. When the external thread of the locking portion 44 of the pressing liquid-extracting cap 40 is stably connected with the internal thread of the limiting portion 162 of the fitting housing 16, the all-plastic liquid pump 100 is in the locked state, and the pressing liquid-extracting cap 40 and the movable drainage member 20 cannot move up and down relative to the pump main body 10. After the external thread of the pressing liquid-extracting cap 40 is separated from the internal thread of the limiting portion 162 of the fitting housing 16 by rotating the pressing liquid-extracting cap 40, the all-plastic liquid pump 100 is switched to the unlocked state, and the pressing liquid-extracting 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 screwing the push cap 40 and the fitting housing 16 of the pump main body 10.

It should be noted that the specific embodiment of the all plastic liquid pump 100 for switching between the locked state and the unlocked state is only an example and should not be construed as limiting the scope and content of the all plastic liquid pump 100 and the container 1000 with the all plastic liquid pump of the present invention.

Referring to fig. 12 to 19 of the specification, the container 1000 with an all plastic liquid pump according to another preferred embodiment of the present invention will be described in the following description, 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 to the container 200, and the liquid in a liquid containing space 201 of the container 200 can be obtained by pressing the all plastic liquid pump 100. In addition, in the process of pressing to take liquid, the liquid attached to the outer wall of the all-plastic liquid pump 100 can be scraped, external pollutants are prevented from entering the all-plastic liquid pump 100 and the inner space of the container 200, the cleanliness of the liquid contained in the container 1000 with the all-plastic liquid pump is further guaranteed, and the safety and the reliability of the container 1000 with the all-plastic liquid pump are improved.

Specifically, referring to fig. 13, the all-plastic liquid pump 100 includes a pump body 10, a movable flow guiding member 20, a flow guiding pipe 30 and a pressing liquid taking cap 40, wherein the pump body 10 has a liquid storage cavity 101, the movable flow guiding member 20 has a flow guiding channel 201, the flow guiding pipe 30 has a flow guiding channel 301, and the pressing liquid taking cap 40 has a liquid outlet channel 401. The movable drainage member 20 is movably mounted on the pump main body 10 by a clearance fit manner, and the drainage channel 201 of the movable drainage member 20 is communicably connected to the reservoir 101 of the pump main body 10. The guide tube 30 is installed in the pump body 10, and the guide passage 301 of the guide tube 30 is communicably connected to the reservoir chamber 101 of the pump body 10. The pump body 10 is detachably attached to the container 200, and the guide passage 301 of the guide tube 30 is communicated with the liquid containing space 201 of the container 200. The pressing liquid taking cap 40 is arranged on the movable drainage member 20 in a manner that the liquid outlet channel 401 is communicated with the movable drainage member 20.

Specifically, the movable drain member 20 has an outer mounting wall 210, and the pump body 10 has an inner mounting wall 110, wherein the movable drain member 20 is movably mounted to the pump body 10 in such a manner that the outer mounting wall 210 is attached to the inner mounting wall 110 of the pump body 10. The movable drainage member 20 is driven to move downwards relative to the pump body 10 by pressing the pressing liquid taking cap 40, and simultaneously the pump body 10 moves upwards relative to the movable drainage member 20. Pump main part 10 is relative the in-process of activity drainage piece 20 upward movement, pump main part 10 can scrape off adhere to activity drainage piece 20 the liquid of outer assembly wall 210 avoids liquid to get into pump main part 10 with the inside of splendid attire container 20.

Referring to fig. 17 to 19, the movable drainage member 20 includes a drainage portion 21, an abutting portion 22 and a holding portion 23, wherein the drainage channel 201 is formed in the drainage portion 21, wherein the abutting portion 22 extends from the drainage portion 21 to the holding portion 23, the holding portion 23 is located outside the drainage portion 21, and an upper mounting space and a lower mounting space are formed between the drainage portion 21, the abutting portion 22 and the holding portion 23. The outer fitting wall 210 of the movable drain member 20 is formed on the outer surface of the holding portion 23. The pressing liquid-taking cap 40 is mounted to the upper mounting space of the movable drainage member 20. The plastic spring 12 is held in the lower mounting space of the movable drain 20 so as to be mounted to the drain 21.

The fitting housing 16 includes a housing main body 161 and a dirt scraping arm 162, which is held obliquely above the housing main body 161, and the inner fitting wall 110 of the pump main body 10 is formed on an inner surface of the dirt scraping arm 162. The movable drain member 20 is movably held in the mounting passage 1601 of the mounting case 16 in such a manner that the outer surface of the holding portion 23 is fitted to the inner surface of the dirt scraping arm 162. The outer surface of the holding portion 13 of the movable drainage member 20 and the inner surface of the dirt scraping arm 162 of the assembling housing 16 are in clearance fit connection, which is beneficial to preventing water from entering the liquid storage cavity 101 of the pump housing 11 and the liquid containing space 201 of the container 200 from between the movable drainage member 20 and the assembling housing 16.

Referring to fig. 12, 17 to 19, in a specific embodiment of the present invention, the wiper arm 162 and the housing main body 161 are integrally formed, that is, the wiper arm 162 integrally extends obliquely upward from the housing main body 161.

Referring to fig. 20, in another specific embodiment of the present invention, the dirt scraping arm 162 and the housing main body 161 are a split structure, and the dirt scraping arm 162 may be mounted to the housing main body 161. Specifically, the mounting housing 16 further includes a connecting member 163, wherein the dirt scraping arm 162 extends obliquely upward from the connecting member 163 and forms a dirt shield. The connecting member 163 is fixed to the case main body 161 by being fitted to the case main body 161, and the wiper arm 162 is held above the case main body 161. The movable drain member 20 is movably held in the mounting passage 1601 of the mounting case 16 in such a manner that the outer surface of the holding portion 23 is fitted to the inner surface of the dirt scraping arm 162. For example, but not limited to, the connector 163 is detachably mounted to the housing body 161 by means of a clearance fit, a screw connection, or the like. The anti-pollution cover with the adaptive size is arranged on the existing emulsion pump, so that the existing emulsion pump can have an anti-pollution effect. It should be understood by those skilled in the art that the specific connection between the wiper arm 162 and the housing body 161 is merely illustrative and should not be construed as limiting the scope and content of the all plastic liquid pump 100 and the container 1000 with the all plastic liquid pump of the present invention.

Further, referring to fig. 18A and 18B, the dirt scraping arm 162 has an inclined outer wall with respect to the inner fitting wall 110, the inclined outer wall extending obliquely downward with respect to the holding portion 13 of the movable drain 20. In the process that the movable drainage piece 20 is driven to move downwards relative to the pump main body 20, the liquid attached to the outer surface of the holding part 13 of the movable drainage piece 20 is scraped by the scraping arm 162 and then flows down rapidly along the inclined outer wall of the scraping arm 162, so that the liquid attached to the outer assembly wall 210 of the movable drainage piece 20 can be removed rapidly.

Specifically, referring to fig. 13, 17-20, 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 outwardly from an outer wall of the bearing portion 171, wherein the bearing portion 171 has a receiving cavity 1701 and a mounting opening 1702 communicating with the receiving cavity 1711. The bearing portion 171 of the spring bearing base 17 is held in the reservoir 101 of the pump housing 11 such that the support arm 172 is attached to the upper edge of the pump housing 11. The movable drainage member 20 is held in the accommodation chamber 1701 of the carrier 171 in such a manner that the lower end of the drainage portion 21 is movably held in the fitting opening 1702 of the carrier 171. The upper end of the spring 11 sleeved on the drainage portion 21 of the movable drainage member 20 is abutted against the abutting portion 22 of the movable drainage member 20, and the lower end of the plastic spring 12 is abutted against the bottom of the bearing portion 171 of the spring bearing seat 17. The piston 13 and the piston seat 14 are located below the bearing portion 171 of the spring support seat 17.

Referring to fig. 18A and 18B, in the process of using the all-plastic liquid pump 100, the pressing liquid-taking cap 40 is pressed downward, the pressing liquid-taking cap 40 and the movable drainage member 20 connected to the pressing liquid-taking cap 40 move downward relative to the pump main body 10, and the abutting portion 23 of the movable drainage member 20 and the bearing portion 171 of the spring bearing seat 17 press the plastic spring 12. The drainage portion 21 of the movable drainage member 20 pushes the piston 13 and the piston seat 14 to move downward. The friction between the outer wall of the piston 13 and the inner wall of the pump housing 11 resists the downward movement speed of the piston 13, the piston seat 14 moves downward relative to the piston 13, the flow hole 1402 of the piston seat 14 is exposed, and the flow hole 1402 communicates the guide passage 1401 of the piston seat 14 and the reservoir 101 of the pump housing 11. The pressure in the liquid storage cavity 101 below the piston 13 is increased, 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 from the flow hole 1402 of the piston seat 14, and after passing through the flow guide channel 201 of the movable flow element 20, flows out from the liquid outlet channel 401 of the pressing and liquid taking cap 40.

When the pressing force applied to the liquid taking cap 40 is removed, the force of the plastic spring 12 tending to restore the initial position drives the movable drainage 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 liquid from flowing between the pump housing 11 and the movable drain 20. The pressure in the reservoir 101 below the piston 13 decreases. The plastic check valve 15 is opened, and the guide passage 301 of the guide tube 30 is communicated with the reservoir 101 of the pump housing 11. Under the action of the pressure difference, the liquid in the liquid containing space 201 of the container 200 is pressed into the liquid storage cavity 101 of the pump housing 11 from the flow guide channel 301 of the liquid guide tube 30.

Further, referring to fig. 7 and fig. 19, the all-plastic liquid pump 100 can be switched between a locked state and an unlocked state, the pressing liquid taking cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 in the locked state cannot be driven to move, and the container 1000 with the all-plastic liquid pump is convenient to store and transport; the liquid-taking pressing cap 40 and the movable drainage member 20 of the all-plastic liquid pump 100 in the unlocked state can be driven to move relative to the pump main body 10, so that a user can conveniently press and take liquid.

Referring to fig. 19, in this embodiment of the present invention, the lower portion of the holding portion 23 of the movable drainage member 20 is provided with a stopper portion 231, and the lower portion of the bearing portion 171 of the spring bearing seat 17 is provided with a locking portion 1711. The holding portion 23 of the movable drainage member 20 is movably held in the accommodation cavity 1701 of the bearing portion 171, and the stopper portion 231 of the holding portion 23 and the movable portion 1711 of the bearing portion 171 are engaged with each other, so that the all-plastic liquid pump 100 can be switched between the locked state and the unlocked state.

Preferably, the position-limiting portion 231 of the movable drainage member 20 is implemented as an external thread, and the locking portion 1711 of the bearing portion 171 of the spring bearing seat 17 is implemented as an internal thread fitted to the external thread. When the movable drainage member 20 is driven to move downwards and the interaction makes the limit portion 231 of the drainage member 20 and the locking portion 1711 of the bearing portion 171 of the spring support seat 17 stably connected, the all-plastic liquid pump 100 is in the locking state, and the pressing liquid taking cap 40 and the movable drainage member 20 cannot move up and down relative to the pump main body 10. After the external thread and the internal thread are separated by rotating the movable drainage member 20, the all-plastic liquid pump 100 is switched to the unlocking state, and the pressing liquid taking cap 40 and the movable drainage member 20 can move up and down relative to the pump main body 10. That is, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by screwing the movable drainage member 20 and the spring support seat 17.

Optionally, the all-plastic liquid pump 100 is switched between the locked state and the unlocked state by means of the snap connection of the movable drainage member 20 and the spring support 17. It should be noted that the embodiment of the all plastic liquid pump 100 for switching between the locked state and the unlocked state is only an example and should not be construed as limiting the content and scope of the container 1000 with the all plastic liquid pump and the all plastic liquid pump 100 of the present invention.

Referring to fig. 4 to 7, 14 to 16D, in the 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 maintaining portion 1210, a lower maintaining portion 1220 and at least one elastic portion 1230, wherein the elastic portion 1230 is flexibly and integrally extended from the upper maintaining portion 1210 to the lower maintaining portion 1220, and an installation channel 1201 is formed between the upper maintaining portion 1210, the lower maintaining portion 1220 and the elastic portion 1230, and the drainage portion 21 of the movable drainage member 20 is held in the installation channel 1201 of the plastic spring 12. When the upper maintaining part 1210 and the lower maintaining part 1220 are driven to be relatively close to each other, the upper maintaining part 1210 and the lower maintaining part 1220 press the elastic part 1230, and the elastic part 1230 is elastically deformed and accumulates elastic potential energy. When the external force applied to the upper maintaining part 1210 and the lower maintaining part 1220 is removed, the elastic part 1230 releases elastic potential energy and returns to the original state.

The upper maintaining part 1210, the lower maintaining part 1220 and the elastic part 1230 of the plastic spring may be integrally formed in an injection molding manner, so that the manufacturing cost is low, the production period is fast, and the production cost of the liquid pump using the plastic spring is reduced. In addition, the plastic material of the plastic spring 12 may 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.

Preferably, the elastic part 1230 is implemented in two, and the two elastic parts 1230 are spaced and held between the upper maintaining part 1210 and the lower maintaining part 1220, so as to prevent the plastic spring 12 from being laterally biased when being pressed, which is beneficial to improve the stability of the plastic spring 12.

It should be noted that the specific number of the elastic parts 1230 is not limited, the elastic parts 1230 may be implemented in one, two, three or even more than three numbers, and the plastic spring may have different elastic force sizes by providing different numbers of the elastic parts 1230, so as to be suitable for different products.

Referring to fig. 16C and 16D, the elastic part 30 is preferably implemented as one. For example, the elastic portion 30 has a corrugated tubular structure.

During the use of the liquid pump 1000, when the pressing cap 40 of the liquid pump 1000 is pressed, the upper maintaining part 1210 and the lower maintaining part 10 of the spring 100 approach each other, the two elastic parts 1230 are pressed, and the two elastic parts 1230 are compressed in a deformation manner and accumulate elastic potential energy. When the external force applied to the pressing cap 40 is removed, the elastic portion 1230 of the spring 100 releases elastic potential energy, and drives the movable drainage member 20, the pressing cap 40, the piston 13, and the piston seat 14 to move upward and return to the initial position.

In a specific embodiment of the present invention, the upper holder 1210 and the lower holder 1220 are kept parallel, and the upper holder 1210 and the lower holder 1220 are parallel to a horizontal plane. When the upper maintaining part 1210 is pressed vertically downwards, the upper maintaining part 1210 is uniformly stressed, which is beneficial to uniformly driving the elastic part to deform and compress downwards. Alternatively, the upper maintaining part 1210 and the lower maintaining part 1220 may be implemented to be non-parallel. Alternatively, the upper maintaining part 1210 and the lower maintaining part 1220 may be implemented to have an inclined angle with the horizontal plane. Preferably, the upper maintaining part 1210 and the lower maintaining part 1220 extend in the same direction. Optionally, the upper maintaining part 1210 and the lower maintaining part 1220 have different extending directions. For example, the upper holder 1210 may be implemented to extend obliquely upward, and the lower holder 1220 may be implemented to extend obliquely downward.

In this particular embodiment of the plastic spring 12 according to the invention, the upper retaining part 1210 and the lower retaining part 1220 are embodied as circular. Alternatively, the upper and lower maintaining

parts

1210 and 1220 may be implemented in a square shape, a triangular shape, an oval shape, a diamond shape, a semi-arc shape, a trapezoid shape, or the like. That is, the upper maintaining part 1210 and the lower maintaining part 1220 may be implemented in a closed shape, or may be implemented in a non-closed shape. It should be understood by those skilled in the art that the specific embodiments of the upper and

lower retaining portions

1210 and 1220 of the plastic spring 12 are only examples and are not intended to be exemplary of the scope and content of the present invention.

Referring to fig. 4 to 7, and 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 retaining portion 1210 and the lower retaining portion 1220 are connected by at least one first elastic unit 1231 and at least one second elastic unit 1232.

It should be noted that the specific number and real-time manner 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 may be implemented in one, two, three, or more than three numbers. The specific number of the first elastic units 1231 and the second elastic units 1232 may be the same or different. Referring to fig. 3 to 6B, the elastic parts 1230 are implemented in two, and the first elastic element 1231 of each of the elastic parts 1230 is implemented in three and the second elastic element is implemented in two. Referring to fig. 6C and 6D, the first and second

elastic elements

1231 and 1232 of each of the elastic parts 1230 are implemented in two.

Also, referring to fig. 5 to 6B and 15A, the cross-sectional shapes of the first and second

elastic units

1231 and 1232 may be implemented as a shape of triangle, square, diamond, circle, semicircle, ellipse, trapezoid, etc. The first elastic unit 1231 and the second elastic unit 1232 may have the same or different cross-sectional shapes. It should be understood by those skilled in the art that the plastic spring 12 may have different elasticity to be suitable for different products by providing different numbers of the first elastic unit 1231 and the second elastic unit 1232. The embodiments of the first elastic unit 1231 and the second elastic unit 1232 disclosed in the specification and the drawings are only examples and should not be construed as limiting the content and scope of the plastic spring according to the present invention.

In an embodiment of the invention, the connection position of the elastic portion 1230 and the upper maintaining portion 1210 is located on the symmetry axis of the upper maintaining portion 1210, which is beneficial to uniform acting force of the two elastic portions 1230 when the upper maintaining portion 1210 is forced to move downward, so that the two elastic portions 1230 can be synchronously and uniformly deformed. Preferably, the connection position of the two elastic parts 1230 and the lower maintaining part 1220 is located at the symmetry axis of the lower maintaining part 1220, which facilitates the uniform deformation of the two elastic parts 1230 during the process of the upper maintaining part 1210 and the lower maintaining part 1220 approaching each other. Alternatively, the connection positions of the elastic portion 1230 and the upper maintaining portion 1210 may be implemented to be distributed on both sides of the symmetry axis of the upper maintaining portion 1210. Alternatively, the connection positions of the elastic portion 1230 and the lower maintaining portion 20 may be implemented to be distributed on both sides of the symmetry axis of the lower maintaining portion 1220. The specific connection position of the elastic portion 1230 with the upper maintaining portion 1210 and the lower maintaining portion 1220 is only an example, and is not intended to limit the content and scope of the all-plastic liquid pump 100 of the present invention.

Referring to fig. 4 to 7, in an embodiment of the present invention, the elastic portion 1230 extends from the upper maintaining portion 1210 to the lower maintaining portion 1220 in a wave shape. Specifically, the first elastic unit 1231 bends and extends obliquely downward from left to right, the second elastic unit 1232 freely bends and extends obliquely downward from left to right, and the first elastic units 1231 and the second elastic units 1232 are connected end to form the wavy elastic portion 1230. The first elastic unit 1231 of one elastic part 1230 held between the upper and

lower holder parts

1210 and 1220 corresponds to the second elastic unit 1232 of the other elastic part 1230. In the process that the upper holder 1210 and the lower holder 1220 are moved closer to each other by an external force, the elastic part 1230 is compressively deformed such that the first elastic unit 1231 and the second elastic unit 1232 are moved closer to each other.

It should be noted that the range of the included angle between the first elastic unit 1231 and the second elastic unit 1232 of the elastic portion 1230 is not limited, and the specific ranges of the included angle between the first elastic unit 1231 and the second elastic unit 32, and the included angles between the first elastic unit 1231 and the second elastic unit 1232 and the horizontal plane, respectively, shown in the drawings are only for illustration and should not be construed as limitations to the content and scope of the all-plastic liquid pump 100 of the present invention.

Preferably, two of the elastic parts 1230 are held in parallel with each other between the upper and

lower holder parts

1210 and 1220. Optionally, two elastic parts 1230 connect the upper maintaining part 1210 and the lower maintaining part 1220 in a non-parallel manner. Alternatively, the first and second

elastic units

1231 and 1232 of the elastic part 1230 may be implemented to extend in a straight line.

Referring to fig. 14 to 16D, in an embodiment of the present invention, two elastic portions 1230 spirally extend from the upper maintaining portion 1210 to the lower maintaining portion 1220. Specifically, the first and second elastic units 1231 and 32 of one elastic part 1230 of the two elastic parts 1230 held between the upper and

lower holder

1210 and 1220 correspond to the first and second

elastic units

1231 and 1232 of the other elastic part 1230, respectively, and the two elastic parts 1230 extend to cross each other to form a spiral structure. In the process that the upper maintaining part 1210 and the lower maintaining part 1220 are moved closer to each other by an external force, the two elastic parts 1230 are compressively deformed such that the second elastic units 1232 are moved closer to each other.

Referring to fig. 14 to 15B, preferably, the first elastic unit 1231 of the elastic part 1230 extends obliquely downward, and the second elastic unit 32 of the elastic part 1230 is parallel to a horizontal plane. The second elastic units 1232 extending in parallel can limit the deformation of the first elastic units 1231 due to over-expansion after being compressed. Alternatively, referring to fig. 16A and 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 included angle exists between the extending direction of the second elastic unit 32 and the horizontal plane. It should be understood by those skilled in the art that the embodiment of the elastic portion 1230 that extends in a spiral shape is merely exemplary and should not be construed as limiting the scope and content of the all plastic liquid pump 100 of the present invention.

Referring to fig. 4 to 7, in this specific embodiment of the plastic spring 12 according to the present invention, the plastic spring 12 further includes at least one limiting portion 1240, wherein the limiting portion 1240 is connected to two elastic portions 1230 spaced apart from each other, and the extending direction of the elastic portion 1230 is different from the extending direction of the elastic portion 1230, so as to limit the deformation degree of the elastic portion 1230, prevent the elastic portion 1230 from being excessively elastically deformed and broken, and prolong the service life of the plastic spring 12.

Preferably, the restricting part 1240 is provided at a position where the first and second

elastic units

1231 and 1232 of the two elastic parts 1230 are connected. Alternatively, the restricting part 1240 is provided to the first elastic unit 1231 of the elastic part 1230. Alternatively, the restricting part 1240 is provided to the second elastic unit 32 of the elastic part 1230.

Referring to fig. 4 to 6B, in an embodiment of the present invention, the restricting portion 1240 of the plastic spring 12 has a circular ring shape, and the restricting portion 1240 is circumferentially disposed on the two elastic portions 1230. The restricting portions 1240 are disposed at both sides of each of the elastic portions 1230. Referring to fig. 7, alternatively, the limiting portions 1240 of the plastic spring 12 have a semicircular arc shape, and the openings of two adjacent limiting portions 1240 face in opposite directions. The specific shape of the restricting part 40 is not limited, and the restricting part 40 may also be implemented in a zigzag shape, a square shape, a diamond shape, a triangle shape, an oval shape, etc.

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

It should be noted that, the specific embodiment of the limiting portion 1240 of the plastic spring 12 is not limited, and the limiting portion 1240 of the plastic spring 12 may be implemented in one, two, three or even more than three, and at least two limiting portions 1240 are arranged at intervals on two elastic portions 1230. Preferably, the distances between the adjacent restricting parts 1240 are equal. Optionally, the distances between adjacent limiting portions 1240 are not equal. The cross-sectional shape of the restricting portion 1240 of the plastic spring 12 may be implemented as a triangle, a circle, a square, a diamond, a semicircle, etc. It should be understood by those skilled in the art that the specific embodiments of the restraining portion 1240 of the plastic spring 12 disclosed in the specification and drawings are exemplary only and should not be construed as limiting the scope and content of the all plastic liquid pump 100 of the present invention.

Referring to fig. 8A and 8B, in this specific embodiment of the all-plastic liquid pump 100 of the present invention, the plastic check valve 15 includes a fixing portion 151, at least one connecting portion 152, and a shielding portion 153, wherein the fixing portion 151 has a flow channel 1501, wherein the connecting portion 152 flexibly extends from the bottom of the fixing portion 151 to the shielding portion 153, and wherein 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 be attached to the inner wall of the pump housing 11, the connecting portion 152 completely covers the upper end opening of the flow guide tube 30, and the shielding portion 153 blocks the communication between the flow guide 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.

Specifically, when the liquid taking cap 40 of the liquid pump 1000 is pressed, the piston 13 moves downward, the pressure in the liquid storage chamber 101 increases, and the shielding portion 153 of the plastic check valve 15 is tightly attached to the inner wall of the pump housing 11 by the pressure difference and closes the upper end opening of the flow guide tube 30. When the external force applied to the cap 40 is removed, the spring 100 drives the piston to move upward, the pressure in the reservoir 101 decreases, the shielding portion 153 of the plastic check valve 15 is pushed upward under the action of the pressure difference, the shielding portion 153 moves upward relative to the fixing portion 151, the opening at the upper end of the flow guide tube 30 is opened, the flow channel 1501 of the plastic check valve 15 communicates with the flow guide channel 301 of the flow guide tube 30 and the reservoir 101 of the pump housing 11, and the liquid in the liquid containing space 201 of the container 200 can enter the reservoir 101 of the pump housing 11 from the flow guide channel 301 of the flow guide tube 30.

In a specific embodiment of the present invention, the fixing portion 151 of the plastic check valve 15 is mounted to the pump housing 11 by a clearance fit, and a pressure difference generated during the upward and downward movement of the piston 13 cannot push the fixing portion 151 of the plastic check valve 15 to move relative to the pump housing 11. Preferably, the fixing portion 151 of the plastic check valve 15 is fixed to the pump housing 11 by means of gluing. Alternatively, the fixing portion 151 of the plastic check valve plate 15 is fixed to the pump housing 11 by means of a screw connection. It should be understood by those skilled in the art that the specific embodiment of the plastic check valve 15 is exemplary only and should not be construed as limiting the scope and content of the all plastic liquid pump 100 of the present invention.

In this specific embodiment of the all-plastic liquid pump 100 of the present invention, the connection portion 152 of the plastic check valve 15 is deformed when the shielding portion 153 of the plastic check valve 15 is driven to move upward, and the connection portion 152 is deformed again when the shielding portion 153 is attached to the inner wall of the pump housing 11.

Preferably, referring to fig. 8A and 8B, the connection portion 152 of the plastic check valve 15 is implemented as one, that is, only one side of the shielding portion 153 is connected to the fixing portion 151, and on the one hand, the shielding portion 153 can be rapidly turned up or down with respect to the fixing portion 151 under the pressure difference; on the other hand, when the shielding portion 153 moves upward relative to the fixing portion 151, the flow rate of the liquid passing through the flow channel 1501 is maximized.

Alternatively, the connecting portions 152 of the plastic check valve 15 may be implemented in two, three or more numbers, and at least two connecting portions 152 are distributed around the shielding portion 153 at intervals. Referring to fig. 8C and 8D, the connection parts 152 are implemented in three, and both ends of three connection parts 152 disposed at intervals connect the shielding part 153 and the fixing part 151, respectively, and when the shielding part 153 is driven to move upward, the connection parts 152 are deformed, and liquid flows through a passage between the shielding part 153, the connection parts 152, and the fixing part 151. It should be understood by those skilled in the art that the specific embodiment of the connecting portion 152 of the plastic check valve 15 is provided by way of example only and should not be construed as limiting the scope and content of the all plastic liquid pump 100 of the present invention.

In a specific embodiment of the present invention, the lower surface of the shielding portion 153 of the plastic check valve 15 is an arc-shaped curved surface, which is beneficial for the shielding portion 153 to better seal the communication port between the pump housing 11 and the fluid guide tube 30. For example, but not limited to, the shielding portion 153 is implemented in a hemispherical shape, a crescent shape in cross section, or the like. It should be understood by those skilled in the art that the lower surface of the shielding portion 153 may also be implemented as a plane, and the shielding portion 153 may also be implemented as a sheet-like, spherical, etc. structure. The specific embodiment of the shroud 153 is exemplary only and should not be construed as limiting the scope and content of the all plastic liquid pump 100 of the present invention.

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 invention replace the metal spring and the glass ball valve of the existing emulsion pump, so that the whole all-plastic liquid pump 100 is made of plastic materials, the waste all-plastic liquid pump 100 can be recycled completely without being disassembled, and the cost for recycling the all-plastic liquid pump 100 is reduced.

It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily conceivable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An all plastic liquid pump comprising:

a movable flow guide, wherein the movable flow guide has a flow guide channel;

2. The all-plastic liquid pump as claimed in claim 1, wherein the elastic parts are implemented in two, and the two elastic parts are held between the upper and lower maintaining parts with a space therebetween.

3. The all-plastic liquid pump of claim 2, wherein the resilient portion and the upper retaining portion are connected at a location that is on an axis of symmetry of the upper retaining portion.

4. The all-plastic liquid pump of claim 3, wherein the location at which the resilient portion and the lower retaining portion are connected is located at an axis of symmetry of the lower retaining portion.

5. The all-plastic liquid pump of claim 1, wherein the upper retaining portion and the lower retaining portion remain parallel.

6. The all-plastic liquid pump according to claim 1, wherein the upper retaining portion and/or the lower retaining portion extend in a direction parallel to a horizontal plane.

7. The all-plastic liquid pump according to claim 1, wherein the upper and/or lower retaining portions extend at an angle to the horizontal.

8. The all-plastic liquid pump of claim 1, wherein the upper retaining portion and the lower retaining portion have a shape selected from the group consisting of: circular, square, triangular, rhombic, oval and semi-circular arc.

9. The all-plastic liquid pump of claim 1, wherein the cross-section of the resilient portion has a shape selected from the group consisting of: circular, semicircular, square, triangular, rhombic, elliptical and trapezoidal.

10. The all-plastic liquid pump of claim 1, wherein the resilient portion extends in a wave-like shape from the upper retaining portion to the lower retaining portion.

11. The all-plastic liquid pump of claim 1, wherein the two resilient portions extend helically from the upper retaining portion to the lower retaining portion.

12. The all-plastic liquid pump of claim 11, wherein said resilient portion comprises at least a first resilient element and at least a second resilient element, wherein said first resilient element and said second resilient element are connected end-to-end and are connected to said upper retaining portion and said lower retaining portion by at least one of said first resilient element and at least one of said second resilient element, wherein said first resilient element of said resilient portion extends obliquely downward and said second resilient element of said resilient portion is parallel to a horizontal plane.

13. The all-plastic liquid pump of claim 11, wherein the resilient portion comprises at least a first resilient element and at least a second resilient element, wherein the first resilient element and the second resilient element are connected end-to-end and are connected to the upper retaining portion and the lower retaining portion by at least one of the first resilient element and the second resilient element, wherein the first resilient element of the resilient portion extends obliquely downward and an angle exists between a direction of extension of the second resilient element of the resilient portion and a horizontal plane.

14. The all-plastic liquid pump as claimed in claim 10, further comprising at least one restriction portion connected to adjacent two of said resilient portions.

15. The all-plastic liquid pump of claim 14, wherein the restriction extends in a direction parallel to a horizontal plane.

16. The all plastic liquid pump as claimed in claim 14, wherein said restriction extends at an angle to a horizontal plane.

17. The all-plastic liquid pump of claim 14, wherein the restriction has a shape selected from the group consisting of: the shape group is composed of a circular ring shape, a semi-circular arc shape, a broken line shape, a square shape, a diamond shape, a triangle shape and an oval shape.

18. The all-plastic liquid pump of claim 11, further comprising at least one restriction portion, said restriction portion being connected to two adjacent said resilient portions.

19. The all-plastic liquid pump of claim 18, wherein the restriction extends in a direction parallel to a horizontal plane.

20. The all plastic liquid pump as claimed in claim 18, wherein said restriction extends at an angle to a horizontal plane.

21. The all-plastic liquid pump of claim 18, wherein the restriction is shaped from the group consisting of: the shape group is composed of a circular ring shape, a semi-circular arc shape, a broken line shape, a square shape, a diamond shape, a triangle shape and an oval shape.

22. The all-plastic liquid pump as claimed in claim 1, wherein said elastic portion of said plastic spring is implemented as one, said elastic portion being of a bellows-like tubular structure.

23. The all-plastic liquid pump as claimed in any one of claims 1 to 22, wherein said plastic check valve includes a fixed portion, at least one connecting portion and a blocking portion, wherein said fixed portion has a flow passage, wherein said connecting portion is flexibly extendable from said fixed portion to said blocking portion, and wherein said blocking portion is movably retained in said flow passage of said fixed portion.

24. The all-plastic liquid pump of claim 23, wherein the retainer portion of the plastic check valve is secured to the pump housing of the pump main by a clearance fit, a threaded connection, or an adhesive.

25. The all-plastic liquid pump as claimed in claim 23, wherein a lower surface of the curtain portion of the plastic check valve is curved or flat.

26. The all-plastic liquid pump as claimed in claim 23, wherein said connecting portion of said plastic check valve is one, said blocking portion being allowed to be turned upside down with respect to said fixing portion.

27. The all-plastic liquid pump as claimed in claim 23, wherein the connecting portions of the plastic check valve are implemented in at least two, at least two of the connecting portions being connected to the shielding portion and the fixing portion at intervals.

28. The all-plastic liquid pump in accordance with claim 23, further comprising a flow guide tube, wherein said flow guide tube has a flow guide channel, wherein said flow guide tube is disposed in said pump housing, and said plastic check valve is disposed between said flow guide tube and said pump housing, whereby an opening of said flow guide channel is opened or closed by said plastic check valve.

29. A container with an all plastic liquid pump, comprising:

a container, wherein the container has a liquid containing space; and

30. The container with all-plastic liquid pump as claimed in claim 29, wherein the elastic parts are implemented in two, and the two elastic parts are held between the upper and lower holding parts at intervals.

31. The container with all-plastic liquid pump as claimed in claim 30, wherein the elastic portion and the upper maintaining portion are connected at a position located on a symmetry axis of the upper maintaining portion.

32. The container with all-plastic liquid pump as claimed in claim 31, wherein the elastic portion and the lower maintaining portion are connected at a position located on a symmetry axis of the lower maintaining portion.

33. The container with all-plastic liquid pump according to claim 29, wherein the upper maintaining portion and the lower maintaining portion are kept in parallel.

34. The container with all-plastic liquid pump as claimed in claim 29, wherein the upper maintaining portion and/or the lower maintaining portion extend in a direction parallel to a horizontal plane.

35. The container with all-plastic liquid pump as claimed in claim 29, wherein the upper maintaining portion and/or the lower maintaining portion extend at an angle to a horizontal plane.

36. The container with all-plastic liquid pump according to claim 29, wherein the upper maintaining portion and the lower maintaining portion have a shape selected from the group consisting of: circular, square, triangular, rhombic, oval and semi-circular arc.

37. The container with all-plastic liquid pump as claimed in claim 29, wherein the cross-sectional shape of the elastic portion is selected from the group consisting of: circular, semicircular, square, triangular, rhombic, elliptical and trapezoidal.

38. The container with all-plastic liquid pump as claimed in claim 29, wherein the elastic portion is waved and extends from the upper maintaining portion to the lower maintaining portion.

39. The container with all-plastic liquid pump as claimed in claim 29, wherein the two elastic portions extend spirally from the upper maintaining portion to the lower maintaining portion.

40. The container with all-plastic liquid pump as claimed in claim 39, wherein the elastic part comprises at least a first elastic unit and at least a second elastic unit, wherein the first elastic unit and the second elastic unit are connected end to end and connected to the upper maintaining part and the lower maintaining part by at least one of the first elastic unit and the second elastic unit, wherein the first elastic unit of the elastic part extends obliquely downward and the second elastic unit of the elastic part is parallel to a horizontal plane.

41. The container as claimed in claim 39, wherein the resilient portion comprises at least a first resilient member and at least a second resilient member, wherein the first resilient member and the second resilient member are connected end to end and are connected to the upper retaining portion and the lower retaining portion by at least one of the first resilient member and the second resilient member, wherein the first resilient member of the resilient portion extends obliquely downward and the second resilient member of the resilient portion extends at an angle to the horizontal.

42. The container with all-plastic liquid pump as claimed in claim 38, further comprising at least one restriction portion connected to two adjacent elastic portions.

43. The container with all-plastic liquid pump as claimed in claim 42, wherein the restriction portion extends in a direction parallel to a horizontal plane.

44. The container with all-plastic liquid pump as claimed in claim 42, wherein the restriction portion extends at an angle to a horizontal plane.

45. The container with all-plastic liquid pump according to claim 42, wherein the restriction is shaped selected from the group consisting of: the shape group is composed of a circular ring shape, a semi-circular arc shape, a broken line shape, a square shape, a diamond shape, a triangle shape and an oval shape.

46. The container with all-plastic liquid pump as claimed in claim 39, further comprising at least one restriction portion connected to two adjacent elastic portions.

47. The container with all-plastic liquid pump as claimed in claim 46, wherein the restriction portion extends in a direction parallel to a horizontal plane.

48. The container with all-plastic liquid pump as claimed in claim 46, wherein the restriction extends at an angle to the horizontal.

49. The container with all-plastic liquid pump according to claim 46, wherein the restriction is shaped selected from the group consisting of: the shape group is composed of a circular ring shape, a semi-circular arc shape, a broken line shape, a square shape, a diamond shape, a triangle shape and an oval shape.

50. The container with all-plastic liquid pump as claimed in claim 29, wherein the elastic portion of the plastic spring is implemented as one, and the elastic portion is of a bellows-shaped tubular structure.

51. The container with all-plastic liquid pump as claimed in any one of claims 29 to 50, wherein the plastic check valve comprises a fixing portion, at least one connecting portion and a blocking portion, wherein the fixing portion has a flow passage, wherein the connecting portion is deformable to extend from the fixing portion to the blocking portion, and wherein the blocking portion is movably held in the flow passage of the fixing portion.

52. The container with all-plastic liquid pump as claimed in claim 51, wherein the fixing portion of the plastic check valve is fixed to the pump housing of the pump main body by a clearance fit, a screw connection or an adhesive.

53. The container with all-plastic liquid pump as claimed in claim 51, wherein the lower surface of the shielding portion of the plastic check valve is an arc-shaped curved surface or a flat surface.

54. The container with all-plastic liquid pump as claimed in claim 51, wherein the plastic check valve has one connecting portion, and the shielding portion is allowed to be turned upside down with respect to the fixing portion.

55. The container with all-plastic liquid pump as claimed in claim 51, wherein the connecting portions of the plastic check valve are implemented in at least two, at least two of which are connected to the shielding portion and the fixing portion at intervals.