CN212739098U

CN212739098U - Environment-friendly liquid pump

Info

Publication number: CN212739098U
Application number: CN202021585396.8U
Authority: CN
Inventors: 王金峰
Original assignee: Ningbo Sengcze Macrospray Co Ltd
Current assignee: Ningbo Sengcze Macrospray Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-19
Anticipated expiration: 2030-08-03

Abstract

The utility model discloses an environmental protection liquid pump, include: the pump body is internally provided with a liquid pressing cavity and a valve piece; the pressing pump head is provided with an internal rotation stopping structure; the combination cover is provided with an external rotation stopping structure; an air inlet cavity is arranged between the combination cover and the pressing pump head; the piston assembly is internally provided with a liquid outlet cavity and is provided with a liquid inlet for communicating or blocking the liquid outlet cavity and the liquid pressing cavity; the elastic component is isolated from the hydraulic cavity; the elastic component is internally provided with an air inlet channel communicated with the air inlet cavity and further comprises a locking sealing seat. This environmental protection liquid pump has realized the locking of last liquid operation, and the component adopts the plastic structure, and the spring is kept apart with the pressure fluid chamber, and the use process can not contact with liquid to avoided the spring because receive liquid pollution and leaded to the problem of performance degradation in the use. The pressing pump head, the combination cover, the internal thread pipe seat and the liquid container are respectively provided with a rotation stopping structure, so that a double-locking design is realized.

Description

Environment-friendly liquid pump

Technical Field

The utility model relates to a pump technical field especially relates to an all parts are plastic structure, can retrieve the environmental protection liquid pump of existing utilization.

Background

Along with the continuous improvement of people's life, people are paying close attention to self health and hygiene at present, also more and more concern about the environmental protection problem of whole earth, people are washing hands, all are used to go on with the help of some cleaning fluids when washing face or bathing, in order to maintain self healthy, but just because the quantity of these cleaning fluids is bigger and bigger, rubbish such as the abandonment pump body that from this produces also can be more and more, simultaneously, current liquid pump is in case open in the use and press the pump head, can press the extrusion liquid at any time, especially when opening the back and moving the pump, can spout liquid because of the malfunction of spraying, both caused the waste, still be unfavorable for the environmental protection simultaneously, can not lock at any time, also brought very big inconvenience for the transportation.

Therefore, the urgent need design a section can in time be locked according to the operation of extrusion liquid as required, simultaneously, sealing performance is good, gas is difficult to get into liquid container and leads to the interior production bubble of liquid container, makes the emergence of liquid quality decline scheduling problem in the liquid container, can lock at any time, and all parts are plastic structure, can whole recycle, the pollution-free liquid pump of environmental protection.

Chinese patent literature (publication date: 5/23/2012 and publication number: CN 102464133A) discloses an all-plastic emulsion pump, which relates to an all-plastic emulsion nozzle component of a sprayer. The plastic valve comprises a suction pipe, a plastic valve, a pump body shell, a large ring, a piston, a valve needle, a switch, a gasket, a valve rod, a plastic spring and a nozzle, wherein the valve rod is connected below the nozzle, the plastic spring is sleeved on the outer wall of the valve rod, the valve needle is arranged at the lower end of the valve rod, the piston is sleeved on the outer side of the valve needle, the switch is arranged above the piston, the outer wall of the piston is connected with the inner wall of the upper end of the pump body shell, the large ring is sleeved on the outer wall of the upper end of the pump body shell, the gasket is.

Although all parts are made of all plastic materials, the parts can be recycled without sorting, energy is saved, and the environment is protected, in the technical scheme, the plastic spring is supported between the nozzle and the switch, so that the whole shape is large, the whole structure is not exquisite enough, more materials are used, the cost is high, and the plastic spring is not suitable for being used by a large number of liquid pumps. Meanwhile, the emulsion pump needs to rotate the valve rod to prevent the misoperation of the injection, and the guide device on the emulsion pump is rotated to the space above the baffle ring of the switch to be locked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can once press out the liquid back in the operation, automatic locking, sealing performance is good, and all parts are plastic structure, can whole recycle, and the environmental protection is pollution-free, has realized the plastic design of liquid pump under the unchangeable circumstances of whole appearance guaranteeing, and inside plastic spring keeps apart with liquid completely, and contactless goes up the fast environmental protection liquid pump of liquid. According to the environment-friendly liquid pump, the double locking of the pressing part is realized by designing the thread locking and the rotation stopping locking between the pressing pump head and the combined cover, so that no liquid overflows from the pressing part; the rotation stopping structure and the thread locking structure are arranged between the internal thread pipe seat and the liquid container, so that the double-locking design of the liquid container is realized, and the sealing performance is improved; the elastic component is completely isolated from liquid by performing a brand new structural design on the elastic component, so that the elastic component is not polluted by the liquid due to use; the design of liquid discharging from the interior of the piston assembly is realized, the stroke of hydraulic liquid can be controlled, and the design requirements of hydraulic strokes of different liquid containers can be met; the locking sealing design of the inner part of the hydraulic cavity and the double-elastic design between the valve pieces are realized, the sealing performance is good, and the liquid feeding and discharging are more conveniently controlled.

The utility model discloses the technical scheme who realizes its invention purpose adopts is: an environmentally friendly liquid pump comprising:

the pump body, upper liquid and body part of the liquid outlet, said pump body have liquid cavity and valve member of pressure inside;

the pressing pump head is movably connected with the interior of the pump body and is used for pressing an operating component for discharging upper liquid; the pressing pump head is provided with an internal rotation stopping structure;

the combined cover is hermetically connected to the upper end of the pump body and is sleeved on the lower part of the pressing pump head in a sliding manner, so that the pressing pump head is locked and fixed; the combination cover is provided with an external rotation stopping structure; an air inlet cavity is arranged between the combination cover and the pressing pump head;

the piston assembly is arranged in the pump body and is connected with the pressing pump head, and the movable part is driven by the pressing pump head to move up and down to realize liquid feeding and liquid discharging; a liquid outlet cavity is arranged in the piston assembly, and a liquid inlet for communicating or blocking the liquid outlet cavity and the liquid pressing cavity is formed in the piston assembly;

the elastic component is arranged in the pump body and used for controlling the stroke of the piston component and realizing the resetting of the piston component; the elastic component is isolated from the hydraulic cavity; an air inlet channel communicated with the air inlet cavity is arranged in the elastic component, and the elastic component also comprises a sealing component,

and the locking sealing seat is arranged in the pump body and close to the valve, so that the piston assembly and the valve are locked and the hydraulic cavity is sealed.

The environment-friendly liquid pump can be locked at any time after liquid is discharged once in the use process of the liquid pump through the pressing pump head, the rotation stopping structure on the combined cover and the locking sealing seat arranged in the pump body, if the liquid does not need to be discharged continuously, the stroke of the pressing pump head is slightly longer after the liquid is discharged by pressing the pump head in the use process, at the moment, the piston assembly is driven by the pressing pump head to be in plug-in type sealing connection with the locking sealing seat, so that the locking of the liquid feeding operation is realized, meanwhile, the rotation stopping operation is realized by rotating the pressing pump head, the phenomena that the liquid extrusion is polluted and the environment is protected due to the misoperation of pressing the pump head are avoided, the phenomenon that the liquid is overflowed and pollutes the environment due to the fact that the pump body is toppled or the misoperation is avoided effectively, the phenomenon that the liquid in the liquid pump in the prior art is automatically fed into the pressure liquid cavity after the, the problem of empting or overflowing easily in the transportation at the pump body is covered the cooperation through pressing the pump head and combining and is set up in the structure of splines and splines the structure outward for this liquid pump can spline in transportation and use, can effectively prevent children's maloperation, avoids taking place the accident. This environmental protection liquid pump sets up elastic component in the pump body inside can guarantee under the unchangeable circumstances of the original design of the pump body, makes elastic component and pressure hydraulic chamber keep apart the setting, and liquid can only be pressed the extrusion through inlet and play liquid cavity on the piston assembly, and can not contact with elastic component for elastic component can not contact with liquid in the use, thereby has avoided elastic component to lead to the problem of performance degradation owing to receive liquid pollution in the use. The elastic component and the liquid are isolated, the respective service performance is better, and the liquid outlet is more convenient and faster. This environmental protection liquid pump, the inlet channel that sets up the intercommunication chamber of admitting air in elastic component inside cooperates piston assembly to realize the break-make of outside gas channel simultaneously, and then has realized the quick operation of liquid and play liquid, and whole operation process admits air, the operation of liquid and play liquid is high-efficient fast, and clean no liquid is excessive, and sealing performance is good, quick break-make, goes out the liquid and does not have the weeping phenomenon, and whole pump body is clean and tidy.

Preferably, the outer rotation stopping structure is uniformly distributed on the outer circumference of the upper end of the combined cover, and the outer rotation stopping structure comprises an inclined sliding clamping surface and a reverse clamping hook which are integrally arranged; the inner rotation stopping structure and the outer rotation stopping structure are arranged in a matching mode to form a hook-shaped structure, and the hook-shaped inclination of the inner rotation stopping structure is larger than that of the outer rotation stopping structure. The outer rotation stopping structure and the inner rotation stopping structure are arranged into the structure, when rotation stopping is needed, the inner rotation stopping structure slides into the reverse clamping hook along the inclined sliding clamping surface on the outer rotation stopping structure to form a butt-hook matching structure, rotation stopping is achieved by locking, and when rotation stopping is needed to be relieved, the pump head is pressed in a reverse rotation mode slightly to enable the inner rotation stopping structure to be disengaged from the reverse clamping hook, and rotation stopping unlocking can be achieved.

Preferably, the side wall of the pump body is provided with an air outlet hole, and the air outlet hole is communicated with the air inlet channel and the liquid container. This liquid pump sets up out the gas pocket on the lateral wall of the pump body, and outside gas gets into the back from the access way, and inside the gas pocket got into liquid container, with the liquid that extrudes of the inside liquid of hydraulic chamber, parts completely for whole pump body is nimble more convenient at operation process, can only break fast, and the leakproofness can be good, and operation effect is good.

Preferably, the pump body is an integrated all-plastic component, a horn-shaped upper cavity is arranged in the upper end of the pump body, and an elastic part mounting structure is arranged on the cavity wall at the lower part of the horn-shaped upper cavity; the outer part of the upper end of the pump body is provided with a combined cover plug-in sealing structure and an internal thread tube seat mounting structure; the lower end of the pump body is integrally provided with a liquid passing shrinkage body downwards, and a locking sealing seat mounting structure is arranged in a cavity at the lower part of the pump body; the locking seal seat mounting structure is arranged on the upper part of the over-liquid shrinkage body). The pump body is through the all plastic preparation of integral type, form an integral part, such structure both makes things convenient for the preparation, simultaneously also be favorable to the sealing connection between each subassembly, the upper end inside at the pump body sets up loudspeaker type epicoele, be for the convenience combine the lid, elastic component and piston assembly's setting, it is for the convenience elastic component's installation to set up elastic component mounting structure on the chamber wall, can make elastic component and pump body chamber wall zonulae occludens, can not produce the removal, thereby the result of use has been guaranteed, and it carries out sealing connection in order to carry out sealing connection with combining the lid to set up combination lid grafting seal structure on the outer wall of the pump body, it is for making things convenient for being connected of female tube socket and the pump body to set up female tube socket mounting. The lower extreme of the pump body has set up the liquid shrinkage body for the convenience is with the inside disk seat that sets to of pump body, thereby set up the valve member on the disk seat, with the opening and close realization through the valve member go up liquid channel intercommunication or block, and the setting of locking seal receptacle mounting structure is for the convenience setting of locking seal receptacle, in order to guarantee the connection that the locking seal receptacle can be firm in the use on locking seal receptacle mounting structure, can enough realize the locking to piston assembly, the realization is sealed to the pressure liquid chamber, it is spacing still to make things convenient for the motion of valve member simultaneously, and realize the liquid feeding operation, make liquid can enter into pressure liquid intracavity portion, realize the quick liquid feeding of pump, go out liquid and locking operation.

Preferably, the liquid passing shrinking body is internally provided with a valve seat and a cannula cavity, the valve seat comprises an elastic seat body and a sealing seat cavity, the sealing seat cavity is downwards shrunk to form a horn-shaped structure, the elastic seat body is arranged at the upper part of the cannula cavity and can be elastically deformed upwards and downwards, a liquid feeding channel is arranged in the elastic seat body, and the valve piece is movably and hermetically arranged in the sealing seat cavity. Cross the inside valve body that sets up of liquid shrinkage body, the valve body comprises elasticity pedestal and sealed seat chamber, and in the use, the valve member is at the inside up-and-down motion of sealed seat chamber to realize going up opening and close of liquid passageway, and the elasticity pedestal then cooperates the valve member to realize going up liquid operation and sealed operation, makes the valve member can follow sealed seat chamber up-and-down motion more high-efficiently, thereby can effectually open or close the valve fast, thereby communicates or blocks liquid passageway.

Preferably, the pressing pump head is an integrated all-plastic component, and a liquid outlet channel is arranged inside the pressing pump head; and a liquid outlet is arranged at the outlet of the liquid outlet channel. It sets up to the plastic component of integral type to press the pump body, and the preparation is convenient, conveniently replies the utilization, and it is extruded from the liquid outlet to press the pump head inside liquid outlet way that sets up to be convenient for liquid, realizes going out the liquid operation.

Preferably, the pressing pump head is integrally and coaxially provided with a sliding pressure rod and a locking cap, and the sliding pressure rod is arranged on the inner side of the locking cap and extends out of the lower end of the locking cap; the inner rotation stopping structure is arranged on the inner wall of the locking cap; the sliding compression bar is internally provided with a liquid passing cavity, and the inner wall of the lower end of the liquid passing cavity is provided with a piston rod sealing insertion structure. According to the overhead slip depression bar that sets up of pressure pump, the inside up-and-down motion of slip depression bar along combining the lid to drive piston assembly up-and-down motion, go on the liquid or go out the liquid operation, and the setting of locking cap is in order to realize realizing pressing down the locking of pump head to whole with combining the lid cooperation, prevents its rotation through the structure of splining, has avoided the liquid in transportation or use to spill over and the liquid that the maloperation leads to spills over. The liquid passing cavity is formed in the sliding pressure rod and communicated with the liquid outlet cavity in the piston rod, and in the liquid outlet operation process, liquid flows from the liquid pressing cavity to the liquid outlet cavity in the piston rod, then flows through the liquid passing cavity in the sliding pressure rod and finally is extruded out through the liquid outlet channel and the liquid outlet. The piston rod sealing insertion structure is arranged to facilitate the sealing insertion connection of the piston rod in the piston assembly and the sliding pressure rod, so that the piston assembly can be driven to move up and down through the sliding pressure rod, liquid is prevented from leaking in the liquid outlet process, and the liquid can be completely extruded out through the liquid outlet channel.

Preferably, the combination cover is an integrated all-plastic component, the combination cover comprises an upper seat and a lower cover, a sliding air cavity is arranged inside the upper seat, locking threads are arranged on the outer wall of the upper seat, and the external rotation stopping structures are uniformly distributed on the outer wall of the upper seat above the locking threads; a lower cover air cavity and a sealing connecting ring cavity are sequentially arranged in the lower cover from inside to outside; the sliding air cavity and the lower cover air cavity form the air inlet cavity communicated with the outside. The combined cover is of an integrated all-plastic structure, so that the combined cover is convenient to manufacture and is beneficial to recycling. The combined cover is provided with an upper seat and a lower cover structure, a sliding air cavity is arranged inside the upper cover, so that the sliding of the sliding pressure rod is facilitated, and meanwhile, the fact that external air can enter the lower cover air cavity through the sliding air cavity in the sliding process of the sliding pressure rod is guaranteed, and finally the external air enters the liquid container. And the outer wall of the upper seat is provided with a locking thread for matching with the pressing pump head to lock the thread, and simultaneously, the locking of the locking thread and the pressing pump head is also carried out through an external rotation stopping structure. The lower cover air cavity is arranged in the lower cover so as to form an air inlet cavity after being communicated with the sliding air cavity, so that external air can enter the liquid container conveniently, and the sealing connection ring cavity is arranged so as to be connected with the upper end of the pump body conveniently in a sealing manner.

Preferably, the piston assembly comprises a piston rod and a piston which are respectively of an all-plastic structure; the liquid outlet cavity is arranged inside the piston rod, a spring pressing seat is annularly arranged on the outer wall of the upper end of the piston rod, and a sealing connection structure is arranged on the piston rod above the spring pressing seat; an air passage sealing structure is arranged in the middle of the piston rod; the lower end of the piston rod is provided with a stroke valve rod section, and the liquid inlet is arranged on the stroke valve rod section along the radial direction. Piston assembly is provided with piston rod and piston, this liquid pump has carried out brand-new design to piston rod and piston, inside at the piston rod is provided with out the liquid chamber, liquid passes through the inside play liquid of piston rod, avoided with the outside elastic component's of piston rod contact, pollution has been reduced, and simultaneously, lower extreme at the piston rod sets up the liquid outlet, make the inside liquid in pressure liquid chamber, only when the stroke valve rod section of piston and piston are relieved sealedly and are extended to pressure liquid intracavity portion, liquid just can enter into out the liquid chamber from the liquid outlet, then just can be extruded, such structure setting has avoided liquid to enter into through the valve member behind the pressure liquid chamber can directly be extruded through liquid channel, pollution phenomenon's emergence has been avoided. The design of this kind of structure, make press out liquid only when piston rod and piston are pressed certain stroke, just can go out liquid, children's maloperation has been avoided, and simultaneously, middle part position at the piston rod is provided with air flue seal structure, air flue seal structure sets up the middle part position at the piston rod, outside gaseous can enter into inside the liquid container through the air flue on the spring holder when piston rod downstream in-process, realize the balance of inside and outside atmospheric pressure, when air flue seal structure on the piston rod contacts and carries out sealed cooperation with the air flue on the spring holder, gas passage is blocked, play liquid process is also accomplished this moment, loosen and press the pump head, the piston upwards resets under the effect of the restoring force of spring, at this moment, the inside atmospheric pressure of liquid container is greater than the atmospheric pressure in pressure liquid chamber, liquid enters into the pressure liquid chamber, the.

Preferably, the piston is movably and hermetically connected to the stroke valve rod section and the liquid inlet is switched on and off through the up-and-down movement of the piston rod; the piston is internally provided with a stroke sealing cavity, the upper end surface of the piston is provided with an upper limiting locking structure, and the lower end surface of the piston is provided with a lower limiting locking structure. The stroke sealing cavity is arranged in the piston for sealing or unsealing between the piston rod and the stroke sealing cavity, so that the liquid feeding is switched on and off. The upper limit locking structure is arranged to be matched with the spring seat, and the lower limit locking structure is arranged to be matched with the locking sealing seat conveniently.

Preferably, the elastic component comprises an all-plastic spring seat and an all-plastic spring; the all-plastic spring is arranged inside the all-plastic spring seat. Elastic component is provided with plastic spring seat and plastic spring, it is high to have solved to adopt metal spring cost of manufacture among the prior art, be unfavorable for recycle's problem, it only can set up in the pump body outside to have also solved simultaneously to adopt plastic spring among the prior art, and is bulky, the high scheduling problem of cost of manufacture, this plastic spring can all set up inside plastic spring seat, and also keep apart completely with the inside liquid of the pump body, can not cause the pollution because of contact liquid, plastic spring's setting still is favorable to setting up gas passage on the spring and inside the spring simultaneously, thereby the break-make of gas passage is realized to the up-and-down motion of cooperation piston rod.

Preferably, a seat cavity is arranged in the all-plastic spring seat, and an installation platform is annularly arranged on the outer wall of the all-plastic spring seat; an air pressure cavity is formed between the outer wall of the lower part of the spring seat and the inner wall of the pump body, and an air passage and a piston locking seat are arranged at the lower end of the spring seat. In order to realize the connection between the spring seat and the inside of the pump body, the outer wall of the spring seat is provided with the mounting platform, the mounting platform is matched with an elastic piece mounting structure in the pump body to ensure the tight connection between the spring seat and the pump body, and the air channel and the air pressure cavity are arranged to ensure that external air can enter the liquid container, so that the liquid outlet and the liquid outlet operation are realized. And the lower end of the spring seat is provided with a piston locking seat for facilitating the matching and the limiting of the piston and the spring seat.

Preferably, the all-plastic spring comprises a lower spring seat, a spring body and an upper spring seat, the air inlet channel is arranged inside the spring body, the end part of the upper spring seat is provided with an air inlet, and the air inlet is respectively communicated with the air inlet channel and the air inlet cavity. The above-mentioned structure of plastic spring both is in order to realize plastic structure recyclable's environment-friendly design, also is simultaneously in order to make things convenient for air inlet and inlet channel's setting to realize the quick break-make of admitting air, operate more convenient and fast.

Preferably, the locking seal seat is an integrated all-plastic component, and the locking seal seat comprises a locking mounting seat and a locking socket. The locking seal seat is an integrated all-plastic component which is convenient to manufacture, beneficial to recycling and environment-friendly. The locking seal receptacle is provided with the locking mount pad and has been for convenient being connected with the pump body, still for the convenient design in valve member motion chamber simultaneously, and set up the locking socket then for carrying out the sealed location of grafting locking with the piston to guarantee when not using, piston and locking seal receptacle sealing connection, and then guarantee to press the liquid intracavity portion not to go up liquid, thereby guarantee when not using, liquid can not spill over. And the lower extreme of making things convenient for the piston rod can stretch into the locking chamber when the locking and ensure that the locking targets in place in the setting of locking chamber.

Preferably, the locking socket is internally provided with a locking cavity in a surrounding manner, the locking mounting seat is internally provided with a valve moving cavity, a liquid inlet of a locking sealing seat is formed in the cavity wall connecting the valve moving cavity and the locking mounting seat, the valve moving cavity and the locking cavity are isolated from each other through a partition plate, and a valve limiting structure is arranged at the bottom of the valve moving cavity. Upper portion locking socket and locking chamber are used for cooperating piston assembly to seal the locking, and thereby lower part locking mount pad and inside valve member motion chamber are in order to make progress by jack-up at last liquid in-process valve member and open the valve, make liquid enter into valve member motion chamber, and then enter into through locking seal receptacle inlet and press the liquid chamber and accomplish the action of getting on the liquid, get on the liquid and accomplish the back valve member and fall back the realization and close the valve.

Preferably, the liquid container pump further comprises an internal thread pipe seat arranged outside the upper end of the pump body and used for being connected with a liquid container, and a container rotation stopping structure is arranged on the inner wall of the internal thread pipe seat. Set up the container structure of splines on the internal thread tube socket, in order to avoid the pump body to be connected the back with liquid container, easy maloperation and make the pump body and liquid container loosen to make the problem that liquid spills over, effectively prevented to return the emergence of pine back weeping, also avoided children's maloperation to lead to the pump body and the accident that liquid container's not hard up arouses simultaneously.

The utility model has the advantages that: this environmental protection liquid pump, through setting up the locking seal receptacle and to the brand-new design of disk seat, can realize the locking of last liquid operation, avoided making the liquid outflow polluted environment because the pump head is pressed to the maloperation, effectively prevented that the pump body from toppling over or the maloperation and making liquid spill over and the polluted environment, effectively avoided among the prior art liquid pump once pressing out the liquid back, the inside liquid of container is automatic to going up liquid to the pressure liquid chamber, the problem of spilling over easily in the pump body is toppled over or the transportation. All components of the environment-friendly liquid pump are of full-plastic structures, and the environment-friendly liquid pump can be completely recycled and is environment-friendly. The spring and the hydraulic cavity are arranged in an isolated mode, the spring cannot be in contact with liquid in the using process, and therefore the problem that the performance of the spring is reduced due to liquid pollution in the using process is solved. This environmental protection liquid pump still covers the cooperation through pressing the pump head and combines to be provided with the structure of splining, sets up the structure of splining at internal thread tube socket and liquid container junction for this liquid pump is whole to realize two locking structural design at the junction, has effectively prevented this liquid pump and has flowed out at the accident of transportation and in-use liquid, and the pollution-free environmental protection can effectively prevent children's maloperation simultaneously, avoids taking place the accident.

Drawings

FIG. 1 is a schematic structural diagram of an environmental protection liquid pump of the present invention;

FIG. 2 is a sectional view of the environmental liquid pump of the present invention;

FIG. 3 is a schematic view of a pump body according to the present invention;

fig. 4 is a schematic structural view of a pressing pump head of the present invention;

fig. 5 is a schematic cross-sectional view of the pressing pump head of the present invention;

fig. 6 is another angle structure diagram of the pressing pump head of the present invention;

fig. 7 is a bottom view of the pressing pump head of the present invention;

fig. 8 is a schematic view of a structure of the coupling cover of the present invention;

FIG. 9 is a cross-sectional view of the closure of the present invention;

fig. 10 is a schematic view of a piston assembly according to the present invention;

fig. 11 is a schematic structural view of the piston rod of the present invention;

fig. 12 is a schematic view of a structure of the elastic member of the present invention;

FIG. 13 is a schematic view of a middle plastic spring according to the present invention;

fig. 14 is a schematic structural view of a locking seal seat of the present invention;

fig. 15 is a schematic structural view of another angle of the locking seal seat of the present invention;

fig. 16 is a cross-sectional view of the locking seal holder of the present invention;

17a, 17b, 17c are schematic views of the liquid outlet process of the environmental protection liquid pump of the present invention;

18a, 18b are schematic diagrams of the air intake process of the environmental protection liquid pump of the present invention;

FIGS. 19a and 19b are schematic views of the liquid feeding process of the environmental protection liquid pump of the present invention;

FIG. 20 is a schematic view of the environmentally friendly liquid pump in an original locked state;

in the figure: 1. pump body, 101, hydraulic cavity, 102, valve element, 103, trumpet-shaped upper cavity, 104, elastic element mounting structure, 105, combination cover plug-in sealing structure, 106, female screw tube seat mounting structure, 107, liquid passing shrinkage body, 108, locking sealing seat mounting structure, 109, valve seat, 110, insertion cavity, 111, inclined baffle ring, 112, mounting groove, 113, air outlet hole, 114, elastic seat body, 115, sealing seat cavity, 116, upper liquid channel, 2, pressing pump head, 201, inner rotation stopping structure, 202, liquid outlet channel, 203, sliding pressure rod, 204, locking cap, 205, liquid passing cavity, 206, piston rod sealing plug-in structure, 207, liquid outlet, 3, combination cover, 31, upper seat, 32, lower cover, 301, outer rotation stopping structure, 302, sliding air cavity, 303, locking thread, 304, lower cover air cavity, 305, sealing connection ring cavity, 306, sliding clamping surface, 307, reverse clamping hook, 4, The piston assembly, 41, a piston rod, 42, a piston, 401, a liquid outlet cavity, 402, a spring pressure seat, 403, a sealing connection structure, 404, an air passage sealing structure, 405, a stroke valve rod section, 406, a liquid inlet, 407, a stroke sealing cavity, 408, an upper limit locking structure, 409, a lower limit locking structure, 5, an elastic assembly, 51, an all-plastic spring seat, 52, an all-plastic spring, 501, a seat cavity, 502, a mounting table, 503, an air passage, 504, a piston locking seat, 505, a spring lower seat, 506, a spring body, 507, a spring upper seat, 508, an air inlet, 6, a locking sealing seat, 61, a locking mounting seat, 62, a locking mounting seat, 63, a locking cavity, 64, a valve moving cavity, 65, a locking seat liquid inlet, 66, a partition board, 67, a valve limiting structure, 7, an air inlet cavity, 8, an air inlet channel, 9, a pneumatic cavity, 10, a pipe seat internal thread, 11, and a container rotation stopping structure, 12. a pipette, 13, a liquid container, 14, a sealing gasket.

Detailed Description

The technical document of the present invention is further described in detail by the following specific embodiments in conjunction with the drawings of the specification.

Example 1:

in the embodiment shown in fig. 1 and 2, an eco-friendly liquid pump, in which components other than a gasket 14 disposed between a pump body and a nipple are made of PP resin material, includes:

the pump body 1 is a main body component for discharging liquid, and a liquid pressure cavity 101 and a valve element 102 are arranged in the pump body 1;

the pressing pump head 2 is movably connected with the pump body 1 and is used for pressing an operating part for discharging upper liquid; the pressing pump head 2 is provided with an internal rotation stopping structure 201;

the combined cover 3 is hermetically connected to the upper end of the pump body 1 and is sleeved on the lower part of the pressing pump head 2 in a sliding manner, so that the pressing pump head 2 is locked and fixed; the combination cover 3 is provided with an external rotation stopping structure 301; an air inlet cavity 7 is arranged between the combination cover 3 and the pressing pump head 2;

the piston component 4 is arranged in the pump body 1, is connected with the pressing pump head 2 and is a movable part which is driven by the pressing pump head 2 to move up and down to realize liquid feeding and discharging; a liquid outlet cavity 401 is arranged in the piston assembly 4; the piston assembly 4 is provided with a liquid inlet 406 for communicating or blocking the liquid outlet cavity 401 and the hydraulic cavity 101;

the elastic component 5 is arranged in the pump body 1 and used for controlling the stroke of the piston component and realizing the resetting of the piston component; the elastic component 5 is isolated from the hydraulic cavity 101; the elastic component 5 is internally provided with an air inlet channel 8 communicated with the air inlet cavity 7 and also comprises,

and the locking sealing seat 6 is arranged in the pump body 1 and close to the valve member 102, so that the piston assembly 4 and the valve member 102 are locked and the hydraulic cavity 101 is sealed.

The inner rotation stopping structure 201 and the outer rotation stopping structure 301 are arranged in a reverse direction, as shown in fig. 8, the outer rotation stopping structure 301 is uniformly distributed on the outer circumference of the upper end of the combined cover, the outer rotation stopping structure 301 comprises an inclined sliding clamping surface 306 and a reverse clamping hook 307 which are integrally arranged, as shown in fig. 6, the inner rotation stopping structure 201 and the outer rotation stopping structure 301 are arranged in a matching manner to form a hook-shaped structure, and the hook-shaped inclination of the inner rotation stopping structure 201 is greater than that of the outer rotation stopping structure. As shown in fig. 7, two sets of the internal rotation stopping structure 201 are symmetrically arranged, and two sets are arranged in each set. When the rotation stopping is needed, the inner rotation stopping structure 201 slides into the reverse hook 307 along the inclined sliding clamping surface 306 on the outer rotation stopping structure 301 to form a hook-to-hook matching structure, and is locked to realize rotation stopping, and when the rotation stopping needs to be relieved, the pump head 2 is slightly rotated reversely to press the inner rotation stopping structure 201 to be separated from the reverse hook 307, so that the rotation stopping unlocking can be realized.

As shown in fig. 3, the pump body 1 is an integrated all-plastic component made of PP resin material, a horn-shaped upper cavity 103 is arranged inside the upper end of the pump body 1, and an elastic component mounting structure 104 is arranged on the bottom cavity wall of the horn-shaped upper cavity 103; the elastic member mounting structure 104 is composed of a protrusion and a ring groove annularly arranged on the inner wall; the outer part of the upper end of the pump body 1 is provided with a combined cover plug-in sealing structure 105 and an internal thread tube seat mounting structure 106; the combined cover plugging sealing structure 105 is at least one group of convex rings annularly arranged on the outer wall of the pump body, and the group of convex rings is two groups of convex rings in the embodiment; internal thread tube socket mounting structure 106 is the ring platform of ring setting on the pump body outer wall, and during the use, internal thread tube socket cover is established on the ring platform and is blockked by the ring platform, prevents its downstream, and the up end of internal thread tube socket then is supported by the lower extreme that combines the lid and is pressed to realized the spacing at both ends about the internal thread tube socket, made the internal thread tube socket only can rotate, and can not reciprocate. A locking seal seat mounting structure 108 is arranged in the lower cavity of the pump body 1; the locking seal seat mounting structure 108 is arranged on the upper part of the over-liquid shrinkage body 107.

Locking seal receptacle mounting structure 108 includes slope that sets up down and keeps off ring 111 and slope and the mounting groove 112 of crossing liquid undergauge upper portion and pump body inner wall formation, when using, locking seal receptacle 6 is packed into pump body 1 inside from the upper end of the pump body and is pressed down, make it keep off the ring downstream along the slope, until being impressed the mounting groove, then realized being connected between locking seal receptacle 6 and the pump body 1, the slope keeps off the ring owing to be provided with the downward sloping structure, both make things convenient for downward installation, and simultaneously, the restriction body of locking seal receptacle 6 reverse movement has been formed, make locking seal receptacle 6 keep off the ring by the slope and inject inside the mounting groove and can not deviate from.

The lower end of the pump body 1 is integrally provided with a liquid passing shrinkage body 107 downwards, a valve seat 109 and a cannula cavity 110 are arranged inside the liquid passing shrinkage body 107, the valve seat 109 comprises an elastic seat body 141 and a sealing seat cavity 115, the sealing seat cavity 115 is closed downwards to form a horn-shaped structure, the elastic seat body is arranged on the upper portion of the cannula cavity 110 and can elastically deform upwards and downwards, a liquid feeding channel 116 is arranged inside the elastic seat body, and the valve element 102 is movably and hermetically arranged inside the sealing seat cavity 115. In this embodiment, the valve member is a ball valve of an all-plastic structure made of PP resin material. When the liquid feeding device is used, when the air pressure in the liquid container is greater than the air pressure in the liquid pressing cavity, the elastic seat body deforms upwards, the ball valve is jacked upwards under the action of the air pressure, the liquid feeding channel 116 is opened, after liquid feeding is completed, the elastic seat body resets downwards, and the ball valve falls downwards and is matched with the sealing seat cavity to seal the liquid feeding channel.

The side of the pump body is provided with an air outlet 113, and the air outlet 113 is communicated with the liquid pressing cavity 101 and the liquid container 13.

As shown in fig. 5, the pressing pump head 2 is an integrated all-plastic member made of PP resin material, a liquid outlet channel 202 is disposed inside the pressing pump head 2, and the liquid outlet channel 202 is communicated with a liquid outlet 207.

As shown in fig. 4, the pressing pump head 2 is integrally and coaxially provided with a sliding pressure rod 203 and a locking cap 204, the sliding pressure rod 203 is arranged inside the locking cap 204 and extends out of the lower end of the locking cap 204; as shown in fig. 6, the internal rotation stopping structures 201 are uniformly distributed on the inner wall of the locking cap 204; a liquid passing cavity 205 is arranged in the sliding pressure rod 203, and a piston rod sealing insertion structure 206 is arranged on the inner wall of the lower end of the liquid passing cavity 205. The piston rod sealing insertion structure 206 is a group of insertion sealing ring grooves, and is matched with the sealing connection structure 403 at the upper end of the piston rod to form sealing insertion connection when in use, so that the pump head is pressed to drive the piston assembly to move up and down, and liquid discharging and feeding operations are realized.

As shown in fig. 8 and 9, the combination cover 3 is an integral all-plastic member made of PP resin material, the combination cover 3 includes an upper seat 31 and a lower cover 32, a sliding air cavity 302 is disposed inside the upper seat 31, a locking thread 303 is disposed on an outer wall of the upper seat 31, and the external rotation stopping structures 301 are uniformly distributed on an outer wall of the upper seat 31 above the locking thread 303; a lower cover air cavity 304 and a sealing connecting ring cavity 305 are sequentially arranged in the lower cover 32 from inside to outside; the sliding air cavity 302 and the lower cover air cavity 304 form the air inlet cavity 7 communicated with the outside.

As shown in fig. 10, the piston assembly 4 includes a piston rod 41 and a piston 42, which are respectively made of PP resin material and are of an all-plastic structure; the liquid outlet cavity 401 is arranged inside the piston rod 41.

As shown in fig. 11, a spring pressing seat 402 is annularly arranged on an outer wall of an upper end of the piston rod 41, and a sealing connection structure 403 is arranged on the piston rod 41 above the spring pressing seat 402; an air passage sealing structure 404 is arranged in the middle of the piston rod 41; the air passage sealing structure 404 is a conical sealing inclined surface, the lower end of the piston rod 41 is provided with a stroke valve rod section 405, and a liquid inlet 406 communicated with the liquid outlet cavity 401 is radially arranged on the stroke valve rod section 405.

The piston 42 is movably and hermetically connected to the stroke valve rod section 405 and is used for realizing the on-off of the liquid inlet 406 through the up-and-down movement of the piston rod 41; the piston 42 is internally provided with a stroke sealing cavity 407, the upper end surface of the piston 42 is provided with an upper limit locking structure 408, and the lower end surface of the piston 42 is provided with a lower limit locking structure 409.

As shown in fig. 12, the elastic component 5 includes an all-plastic spring seat 51 made of PP resin material and an all-plastic spring 52 made of PP resin material; the all-plastic spring 52 is arranged inside the all-plastic spring seat 51.

A seat cavity 501 is arranged in the all-plastic spring seat 51, an installation table 502 is arranged on the outer wall of the all-plastic spring seat 51, and the installation table 502 is annularly arranged on the all-plastic spring seat 51; an air pressure cavity 9 is formed between the outer wall of the lower part of the all-plastic spring seat 51 and the inner wall of the pump body 1, and an air duct 503 and a piston locking seat 504 are arranged at the lower end of the all-plastic spring seat 51. The air duct 503 is provided with a tapered channel in cooperation with the air duct sealing structure 404 on the piston rod, and the opening and closing of the air duct 503 are realized by the up-and-down movement of the piston rod.

As shown in fig. 13, the all-plastic spring includes a spring lower seat 505, a spring body 506 and a spring upper seat 507, an air inlet channel 8 is arranged inside the spring body 506, an air inlet 508 is arranged at an end of the spring upper seat 507, and the air inlet 508 is respectively communicated with the air inlet channel 8 and an air inlet cavity 7 formed by a sliding air cavity 302 and a lower cover air cavity 304.

As shown in fig. 14, 15, and 16, the locking seal seat 6 is an integral all-plastic member made of PP resin material, the locking seal seat 6 includes a locking mounting seat 61 and a locking socket 62, a locking cavity 63 is annularly arranged inside the locking socket 62, a valve moving cavity 64 is arranged inside the locking mounting seat 61, a locking seal seat inlet 65 is arranged on a cavity wall of the valve moving cavity 64 connected with the locking mounting seat, the valve moving cavity 64 and the locking cavity 63 are isolated from each other by a partition plate 66 and are not communicated with each other from top to bottom, and a valve limiting structure 67 is arranged at the bottom of the valve moving cavity 64. When the valve locking device is used, the upper locking socket 62 and the locking cavity 63 thereof are used for being matched with the piston assembly to carry out sealing locking, the lower locking mounting seat and the valve moving cavity 64 inside the lower locking mounting seat are used for enabling the valve 102 to be jacked upwards in the liquid feeding process so as to open the valve, liquid enters the valve moving cavity 64 and then enters the hydraulic pressure cavity 101 through the locking sealing seat liquid inlet 65 to finish liquid feeding, and the valve 102 falls back after the liquid feeding is finished so as to close the valve.

The anti-rotation device further comprises an internal thread pipe seat 10 which is arranged outside the upper end of the pump body 1 and used for being connected with a liquid container, and a container rotation stopping structure 11 is arranged on the inner wall of the internal thread pipe seat 10. The container rotation stopping structure 11 and the inner rotation stopping structure on the combination cover are arranged in the same structure, a pipe seat rotation stopping structure is arranged on the outer wall of the liquid container and used for being matched with the container rotation stopping structure 11 to realize rotation stopping between the liquid container and the internal thread pipe seat 10, and the liquid container and the internal thread pipe seat are connected through threads.

As shown in fig. 17a, 17b, and 17c, the environmental-friendly liquid pump is assembled and used, and has a structure that the bottom of the pump body 1 is clamped and sealed to be provided with the locking seal seat 6, the valve member 102 is arranged inside the valve seat 109, the valve member is a valve ball made of PP resin material and having an all-plastic structure, and may be a component such as a gas valve and capable of opening or closing the valve, a cannula cavity 110 is formed inside the lower end of the liquid passing shrinkage body 107 at the lower end of the pump body, a liquid suction tube 12 is inserted into the cannula cavity, and the liquid suction tube 12 is inserted into the liquid container 13 to suck the liquid in the liquid container. Full plastic spring seat 51 is installed and is realized being closely sealed with the pump body is inside through mount table 502 and elastic component mounting structure 104 cooperation in the inside upper end of the pump body 1 and be connected, guarantee can not remove in the use, the inside seat chamber 501 that is provided with of full plastic spring seat, seat chamber 501 both has been used for installing full plastic spring, still be used as gas passage simultaneously, and the inside cavity structure that is of full plastic spring 52, gas inlet 508 has been seted up on full plastic spring's the spring upper base 507, the inside cavity structure of spring sets up to gas passage 8, gas passage 8 communicates with gas inlet 508 and seat chamber 501, the lower extreme of full plastic spring 52 is provided with the spring lower base, spring lower base 505 is pressed and is established on full plastic spring seat 51's diapire. The piston 42 is arranged on a stroke valve rod section 405 at the lower end of the piston rod 41, the upper end of the piston rod 41 passes through the gas channel 8 inside the all-plastic spring 52 to be connected with the liquid passing cavity 205 inside the sliding pressure rod 203 on the pressing pump head 2 in a plugging manner, and is matched and hermetically connected with the sealing connection structure 403 on the piston rod through the piston rod sealing plugging structure 206 on the inner wall of the liquid passing cavity, and the spring pressing seat 402 on the piston rod is pressed at the upper end of the all-plastic spring. When the piston is in the upper limit state and the hydraulic chamber 101 is filled with liquid, the upper limit locking structure 408 on the upper part of the piston is in sealing connection with the piston locking seat 504 on the lower part of the all-plastic spring to block the external air passage. The inside slip air cavity 302 of the upper seat 31 of the joint cover 3 cooperates with the slip pressure lever 203, make the slip pressure lever 203 slide from top to bottom along the slip air cavity 302, can also guarantee the entering of outside gas simultaneously, and the lower cover on the joint cover is then through the upper end plug-in card formula sealing connection of the sealed connection ring cavity 305 on it with the pump body 1, is formed with the lower cover air cavity 304 in the inside of lower cover, slip air cavity 302 and lower cover air cavity 304 communicate from top to bottom and form the outside air inlet chamber 7 of intercommunication. The air passage sealing structure 404 in the middle of the piston rod and the air passage 503 arranged at the lower end of the all-plastic spring seat 51 are separated from each other and sealed in the downward movement process of the piston rod, the air inlet cavity 7, the seat cavity 501 in the all-plastic spring seat, the air inlet 508 on the all-plastic spring, the air inlet channel 8 in the all-plastic spring, the air passage 503 at the lower part of the spring seat and the air pressure cavity 9 formed between the outer wall of the all-plastic spring seat and the inner wall of the pump body are communicated with each other up and down to form an air passage of external air, and finally the air passage enters the liquid container 13 through the air outlet hole 113 on the side wall of the pump body (see fig.. The valve member 102 is in a sealed state, the liquid inside the liquid container is not communicated with the hydraulic cavity, at this time, if liquid discharging operation is required, the pump head is pressed downwards, the liquid inside the hydraulic cavity 101 enters the liquid discharging cavity 401 from the liquid inlet 406 on the piston rod and is pressed out (see fig. 17a, 17b and 17 c) due to extrusion, in the hydraulic process, external gas synchronously enters the liquid container, and when the hydraulic is completed, namely the piston is in sealed connection with the locking seal seat 6, the upper limiting locking structure 408 on the upper portion of the piston is in sealed connection with the piston locking seat 504 on the lower portion of the all-plastic spring to block a gas channel. When the pressing pump head 2 is loosened, the all-plastic spring is reset, the piston moves upwards under the driving of the piston rod, the piston achieves a vacuumizing action on the inside of the hydraulic cavity, at the moment, the air pressure inside the liquid container is larger than that inside the hydraulic cavity, the valve piece is opened upwards, liquid is sucked into the hydraulic cavity 101 from the inside of the liquid container through the liquid suction pipe 12 (see fig. 19a and 19 b), and liquid can be pressed out next time.

As shown in fig. 17a, 17b, and 17c, when the environment-friendly liquid pump is in use, the pump head 2 is pressed downward, the sliding pressure rod on the pump head drives the piston rod and the piston thereon to move downward, at this time, the piston presses the liquid pressing cavity downward, the liquid inside the liquid pressing cavity is pressed, the piston rod is disengaged from the piston in a sealing fit, the stroke valve rod section on the piston rod extends toward the liquid pressing cavity, so that the liquid inlet is communicated with the inside of the liquid pressing cavity, at this time, the liquid inside the liquid pressing cavity flows toward the liquid outlet cavity inside the piston rod under the action of pressure, and is ejected out through the liquid passing cavity on the sliding pressure rod via the liquid outlet 207 at the end of the liquid outlet channel 202 of the pump head, thereby achieving the operation of pressing liquid outlet.

As shown in fig. 19a and 19b, when the pressing pump head is released, the all-plastic spring drives the piston rod to move upwards to reset, at the moment, the air pressure inside the liquid container is greater than the air pressure inside the liquid pressing cavity, the valve member is jacked upwards to be opened, the liquid inside the liquid container is sucked into the liquid pressing cavity through the liquid suction pipe, and the next pressing liquid discharging operation can be carried out.

As shown in fig. 20, if the user does not need to use the device continuously to discharge liquid, after the liquid is pressed out, the user continues to press down the pressing pump head, at the moment, the pressing pump head drives the sliding pressure rod to finally drive the piston rod and the piston to continue moving downwards until the sliding pressure rod and the piston are plugged into the locking sealing seat in a sealing manner, at the moment, the valve piece is sealed on the valve seat, the sealing of the pressure liquid cavity is realized, meanwhile, the rotation of the pressing pump head enables the internal rotation stopping structure on the sliding pressure rod to be matched with the external rotation stopping structure on the combined cover to realize rotation stopping, so that the double locking of the pump body is realized, the misoperation of children is prevented, meanwhile, no liquid overflows in the moving or pouring process, and the environment is not polluted. At this time, the environmentally-friendly liquid pump is in a complete locking state, namely a locked state when the pump is delivered from a factory: the pump head is pressed and the combination cover is locked through the rotation stopping structure and the threaded connection, the internal thread pipe seat and the liquid container are locked through the rotation stopping structure and the threaded connection, the piston assembly and the locking sealing seat are in a plug-in sealing and locking state, the air flue sealing structure 404 on the piston rod is matched with the air flue 503 at the lower end of the all-plastic spring seat to seal the air flue, and external air is isolated from the inside of the liquid container. When the device is used, the pressing pump head is slightly forcibly reflected and rotated, and the rotation stopping structure and the threaded connection structure between the pressing pump head and the combined cover are opened, so that the upper liquid outlet operation can be carried out.

This environmental protection liquid pump can realize the locking of liquid feeding operation, has avoided spilling over of liquid, and pollution-free environmental protection has effectively avoided liquid pump among the prior art once to press out liquid back, and the liquid of container inside is automatic to go up hydraulic pressure liquid cavity, emptys or the problem that spills over easily in the transportation at the pump body. The environment-friendly liquid pump has the advantages that all components except a sealing gasket between a liquid container and a screwed pipe seat are made of PP resin materials and can be completely recycled, the environment-friendly design is realized, all performance requirements of a pump body are met, particularly, a spring is also made of PP resin materials to form a full-plastic structure, the problem that the existing full-plastic spring can only be used externally and cannot be used internally in the pump body, and all performance requirements of the spring can also be met is solved, the full-plastic spring is arranged in the pump body and is isolated from a liquid pressing cavity and cannot be contacted with liquid in the using process, so that the problem that the performance of the spring is reduced due to liquid pollution in the using process is solved, meanwhile, the full-plastic spring in the application is designed and used as a gas channel, so that the overall structure of the pump is more compact and reasonable, the pump is more widely used on the premise of not changing the performance and appearance requirements of the pump. This environmental protection liquid pump is provided with the structure of splining through pressing the pump head and combining to cover the cooperation, sets up the structure of splining at internal thread pipe seat and liquid container junction for this liquid pump can effectively prevent liquid outflow in transportation and use, pollutes the environmental protection, can effectively prevent children's maloperation, avoids meeting accident.

A person skilled in the art will be able to implement the invention on the basis of the description of the above embodiments. Furthermore, the above-described embodiments are merely exemplary embodiments of the present invention, which are generally not all exemplary embodiments. Therefore, based on the embodiments of the present invention, all other technical documents and embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. An environmentally friendly liquid pump, comprising:

the liquid feeding pump comprises a pump body (1) and main body components for feeding liquid and discharging liquid, wherein a liquid pressing cavity (101) and a valve element (102) are arranged in the pump body (1);

the pressing pump head (2) is movably connected with the interior of the pump body (1) and is used for pressing an operating component for discharging upper liquid; an internal rotation stopping structure (201) is arranged on the pressing pump head (2);

the combined cover (3) is hermetically connected to the upper end of the pump body (1) and is sleeved on the lower part of the pressing pump head (2) in a sliding manner, so that the pressing pump head (2) is locked and fixed; an external rotation stopping structure (301) is arranged on the combination cover (3); an air inlet cavity (7) is arranged between the combination cover (3) and the pressing pump head (2);

the piston assembly (4) is arranged in the pump body (1), is connected with the pressing pump head (2) and is a movable part which is driven by the pressing pump head (2) to move up and down to realize liquid feeding and liquid discharging; a liquid outlet cavity (401) is formed in the piston assembly (4), and a liquid inlet (406) for communicating or blocking the liquid outlet cavity (401) and the hydraulic cavity (101) is formed in the piston assembly (4);

the elastic component (5) is arranged in the pump body (1) and is used for controlling the stroke of the piston component and realizing the resetting of the piston component; the elastic component (5) is isolated from the hydraulic cavity (101); an air inlet channel (8) communicated with the air inlet cavity (7) is arranged in the elastic component (5),

and the locking sealing seat (6) is arranged in the pump body (1) and close to the valve piece (102), so that the piston assembly (4) and the valve piece (102) are locked and parts of the hydraulic cavity (101) are sealed.

2. An environmentally friendly liquid pump as defined in claim 1, further comprising: the inner rotation stopping structure (201) and the outer rotation stopping structure (301) are arranged in a reverse direction, the outer rotation stopping structure (301) is uniformly distributed on the outer circumference of the upper end of the combined cover (3), and the outer rotation stopping structure (301) comprises an inclined sliding clamping surface (306) and a reverse clamping hook (307) which are integrally arranged; the inner rotation stopping structure (201) and the outer rotation stopping structure (301) are arranged in a matched mode to form a hook-shaped structure, and the inclination of the hook shape of the inner rotation stopping structure (201) is larger than that of the outer rotation stopping structure (301).

3. An environmentally friendly liquid pump as defined in claim 1, further comprising: the side wall of the pump body (1) is provided with an air outlet (113), and the air outlet (113) is communicated with the air inlet channel (8) and the liquid container.

4. An environmentally friendly liquid pump as defined in claim 1, further comprising: the pump body (1) is an integrated all-plastic component, a horn-shaped upper cavity (103) is arranged inside the upper end of the pump body (1), and an elastic part mounting structure (104) is arranged on the cavity wall at the lower part of the horn-shaped upper cavity (103); the outer part of the upper end of the pump body (1) is provided with a combined cover plug-in sealing structure (105) and an internal thread tube seat mounting structure (106); a liquid passing shrinkage body (107) is integrally and downwards arranged at the lower end of the pump body (1), and a locking sealing seat mounting structure (108) is arranged in a lower cavity of the pump body (1); the locking seal seat mounting structure (108) is arranged on the upper part of the over-liquid shrinkage body (107).

5. An environmentally friendly liquid pump as defined in claim 4, further comprising: the liquid filling valve is characterized in that a valve seat (109) and a cannula cavity (110) are arranged inside the liquid passing shrinkage body (107), the valve seat (109) comprises an elastic seat body (141) and a sealing seat cavity (115), the sealing seat cavity (115) is closed downwards to form a horn-shaped structure, the elastic seat body is arranged on the upper portion of the cannula cavity (110) and can be elastically deformed upwards and downwards, a liquid feeding channel (116) is arranged inside the elastic seat body (141), and the valve piece (102) is movably and hermetically arranged inside the sealing seat cavity (115).

6. An environmentally friendly liquid pump as defined in claim 1, further comprising: the pressing pump head (2) is an integrated all-plastic component, and a liquid outlet channel (202) is arranged in the pressing pump head (2); and a liquid outlet (207) is arranged at the outlet of the liquid outlet channel (202).

7. An environmentally friendly liquid pump as defined in claim 1, further comprising: the pressing pump head (2) is integrally and coaxially provided with a sliding pressure rod (203) and a locking cap (204), wherein the sliding pressure rod (203) is arranged on the inner side of the locking cap (204) and extends out of the lower end of the locking cap (204); the internal rotation stopping structure (201) is arranged on the inner wall of the locking cap (204); a liquid passing cavity (205) is formed in the sliding pressure rod (203), and a piston rod sealing insertion structure (206) is arranged on the inner wall of the lower end of the liquid passing cavity (205).

8. An environmentally friendly liquid pump as defined in claim 1, further comprising: the combined cover (3) is an integrated all-plastic component, the combined cover (3) comprises an upper seat (31) and a lower cover (32), a sliding air cavity (302) is arranged inside the upper seat (31), locking threads (303) are arranged on the outer wall of the upper seat (31), and the outer rotation stopping structures (301) are uniformly distributed on the outer wall of the upper seat above the locking threads (303); a lower cover air cavity (304) and a sealing connecting ring cavity (305) are sequentially arranged in the lower cover (32) from inside to outside; the sliding air cavity (302) and the lower cover air cavity (304) form the air inlet cavity (7) communicated with the outside.

9. An environmentally friendly liquid pump as defined in claim 1, further comprising: the piston assembly (4) comprises a piston rod (41) and a piston (42) which are respectively of an all-plastic structure; the liquid outlet cavity (401) is arranged inside the piston rod (41), a spring pressing seat (402) is annularly arranged on the outer wall of the upper end of the piston rod (41), and a sealing connection structure (403) is arranged on the piston rod above the spring pressing seat (402); an air passage sealing structure (404) is arranged in the middle of the piston rod (41); the lower end of the piston rod (41) is provided with a stroke valve rod section (405), and the liquid inlet (406) is arranged on the stroke valve rod section (405) along the radial direction.

10. An environmentally friendly liquid pump as defined in claim 9, further comprising: the piston (42) is movably and hermetically connected to the stroke valve rod section (405) and is used for realizing the on-off of the liquid inlet (406) through the up-and-down movement of the piston rod (41); the piston (42) is internally provided with a stroke sealing cavity (407), the upper end face of the piston (42) is provided with an upper limit locking structure (408), and the lower end face of the piston (42) is provided with a lower limit locking structure (409).

11. An environmentally friendly liquid pump as defined in any one of claims 1 to 10, further comprising: the elastic component (5) comprises an all-plastic spring seat (51) and an all-plastic spring (52); the all-plastic spring (52) is arranged inside the all-plastic spring seat (51).

12. An environmentally friendly liquid pump as defined in claim 11, further comprising: a seat cavity (501) is arranged in the all-plastic spring seat (51), and a mounting table (502) is annularly arranged on the outer wall of the all-plastic spring seat (51); an air pressure cavity (9) is formed between the outer wall of the lower part of the spring seat (51) and the inner wall of the pump body, and an air duct (503) and a piston locking seat (504) are arranged at the lower end of the spring seat (51).

13. An environmentally friendly liquid pump as defined in claim 11, further comprising: the all-plastic spring (52) comprises a spring lower seat (505), a spring body (506) and a spring upper seat (507), the air inlet channel (8) is arranged inside the spring body (506), an air inlet (508) is formed in the end part of the spring upper seat (507), and the air inlet (508) is respectively communicated with the air inlet channel (8) and the air inlet cavity (7).

14. An environmentally friendly liquid pump as defined in any one of claims 1 to 10, further comprising: the locking seal seat (6) is an integrated all-plastic component, and the locking seal seat (6) comprises a locking mounting seat (61) and a locking socket (62).

15. An environmentally friendly liquid pump as defined in claim 14, wherein: locking socket (62) inside ring establish into locking chamber (63), locking mount pad (61) inside be provided with valve member motion chamber (64), the chamber wall that valve member motion chamber (64) and locking mount pad are connected seted up locking seal receptacle inlet (65), valve member motion chamber (64) and locking chamber (63) separate each other through a baffle (66), the chamber end of valve member motion chamber (64) be provided with valve member limit structure (67).

16. An environmentally friendly liquid pump as defined in any one of claims 1 to 10, further comprising: the anti-rotation device is characterized by further comprising an internal thread pipe seat (10) arranged outside the upper end of the pump body and used for being connected with a liquid container, and a container rotation stopping structure (11) is arranged on the inner wall of the internal thread pipe seat (10).