CN112193609A

CN112193609A - Liquid pump

Info

Publication number: CN112193609A
Application number: CN202010940689.1A
Authority: CN
Inventors: 王金峰
Original assignee: Ningbo Sengcze Macrospray Co Ltd
Current assignee: Ningbo Sengcze Macrospray Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-01-08
Also published as: WO2022052400A1

Abstract

The invention discloses a liquid pump, which comprises a pump body made of all-plastic materials, a pressing pump head, a combined cover, a threaded cover, a piston assembly, a connecting piece and a valve piece, wherein a spring cavity is arranged in the pressing pump head, a sealing spring is arranged in the spring cavity, and the sealing spring and the spring cavity form a pneumatic elastic pressing structure; a water retaining structure is arranged between the pressing pump head and the combining cover; the pressing pump head and the piston assembly are connected in a sealing mode through a group of pull-off preventing structures, and the piston assembly penetrates through the inside of the connecting piece and is connected with the connecting piece in an opening-closing mode through a group of opening-closing structures. Through the design of waterproof construction for liquid pump can not appear external hourglass in the use and to the inside risk that causes the living fungus of liquid container, prevents pulling out through the design on each position, stops new structural force such as commentaries on classics, and through toughening material, has solved the problem of damage or leakage liquid when falling, has realized that whole sealing performance promotes.

Description

Liquid pump

Technical Field

The invention relates to the technical field of pumps, in particular to a liquid pump with good waterproof performance and a falling-breaking prevention function.

Background

Along with the continuous improvement of people's life, people are paying close attention to self health and hygiene now, also more and more concern the environmental protection problem of whole earth, people are used to go on with the help of some cleaning fluids when washing hands, wash face or shower, 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 produces from this also can be more and more, simultaneously, current liquid pump is in the use, do not have waterproof function, user has water or under the external circumstances that has water on hand, water can enter into the pump body and bring serious risk to liquid bacteria, lead to the rotten of inside liquid, bring the injury for the user. In addition, the traditional liquid pump can not meet the new demand of shopping for e-commerce in new times more and more, the defect that the e-commerce is easy to fall and damage in the express delivery process exists, and a brand new design needs to be made on the structure of the traditional liquid pump, so that the liquid pump is not damaged or leaked due to falling in the express delivery process and the using process.

Therefore, need design a section can satisfy the demand of current electricity merchant shopping, can not cause damage or leak because of falling, and waterproof function is good, and outside water can not enter into liquid container and mix with liquid to stop the risk that liquid living fungus, 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 false operation 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. And it does not have waterproof function, prevents falling brokenly the function poor, is not suitable for the requirement of electricity merchant express delivery.

Disclosure of Invention

The invention aims to provide a liquid pump, which can prevent the risk of liquid bacteria generation caused by external water leakage into a liquid container in the use process of the liquid pump through the design of a waterproof structure, can meet the requirement of modern E-commerce express delivery, can not damage or leak liquid when falling in the E-commerce express delivery process, solves the problem of damage or liquid leakage when falling through designing new structural force on each part and toughening materials, realizes the integral sealing performance, and can not cause the problem of liquid leakage at the connection part of components; in addition, the all-plastic spring is arranged in the pressing pump head of the liquid pump, so that the pressure adjusting type pressing operation is realized, and the liquid pump is convenient for different people to use.

The invention adopts the technical scheme that the invention achieves the aim that: a liquid pump comprises a pump body made of all-plastic materials, a pressing pump head, a combined cover, a threaded cover, a piston assembly, a connecting piece and a valve piece, wherein a spring cavity is arranged inside the pressing pump head, a sealing spring is arranged inside the spring cavity, and the sealing spring and the spring cavity form a pneumatic elastic pressing structure; a water retaining structure is arranged between the pressing pump head and the combining cover; the pressing pump head and the piston assembly are connected in a sealing mode through a group of pull-off preventing structures, and the piston assembly penetrates through the inside of the connecting piece and is connected with the connecting piece in an opening-closing mode through a group of opening-closing structures. This liquid pump, all adopt the plastic material preparation to the component part of pump, especially adopted the sealed spring of plastic structure, form vapour-pressure type suppress structure between sealed spring and the spring chamber, this kind of unsmooth extension scalable compression sealed spring, form spring compression and atmospheric pressure structure in the use, it is effectual to press down the feeling, can adjust the size according to the pressure degree according to the user, thereby realize the control of liquid volume size, thoroughly cancelled traditional stainless steel spring press the in-process because of the problem that the pressing force size that the rigidity produced is not adjustable, green design has been realized, but cyclic recovery use in production. Simultaneously, this liquid pump has designed the manger plate structure, makes water can not flow into the pump body, has reduced simultaneously and has pressed the pump head and combine the joint gap between the lid, and water can not flow into the pump body yet when using for a long time, has thoroughly realized waterproof function, makes the inside liquid of liquid container can not contact outside leading-in water, thereby has effectively stopped outside water and has entered into the emergence that causes the risk that liquid grows the fungus in liquid container in the use. Press pump head and piston assembly and through a set of pull-off preventing structure sealing connection, the problem that the pump head drops easily in the use has effectively been solved current liquid pump, piston assembly and connecting piece realize the locking formula through a set of locking structure and are connected, when pressing pump head locking, have the locking function of splining, when opening, through setting up the size of locking opening force, satisfy the requirement of different notes opening force and effectively prevent to loosen and the weeping in the transportation, the requirement of present electricity merchant express delivery and safe handling has been satisfied.

Preferably, the sealed spring is a full-plastic sealing structure and comprises a plurality of elastic compression bodies which are integrally arranged, and a gas compression structure is formed among the elastic compression bodies; an air inlet cavity is arranged in the sealed spring. The sealed spring compresses the spring through the air compression structure between the integrated elastic compression bodies, the air inside and outside the spring is compressed when the spring is compressed in the use process, the change of the air pressure is realized, the pressing operation of a user is good in hand feeling, the pressing force can be different according to the different force of the user, and therefore the difference of the spraying amount of the pressing liquid is realized, the operation of the liquid pump is more reasonable, and the waste is reduced.

Preferably, the water retaining structure comprises an outer waterproof sealing inclined surface arranged on the pressing pump head, an inner waterproof sealing inclined surface arranged on the combination cover and an outer water retaining arc surface. The water retaining structure is waterproof through combining the outer water retaining cambered surface that covers to form the first layer, and presses the outer waterproof sealing inclined plane on the pump head and combines the interior waterproof sealing inclined plane cooperation that covers to form the second floor waterproof, through the setting of this kind of dual waterproof construction, has effectually stopped outside water and has entered into the inside emergence that leads to the living fungus phenomenon of liquid of the pump body, has realized the design of pollution-free environment-friendly.

Preferably, the pressing pump head includes a nozzle portion, a pressing portion, and a sliding portion, the nozzle portion, the pressing portion, and the sliding portion are integrally formed, the outer waterproof sealing inclined surface ring is disposed at a lower portion of the sliding portion, and a guide structure is disposed at a lower end portion of the sliding portion. Press pump head an organic whole to be provided with the nozzle portion, press splenium and sliding part, the sliding part can be followed and combined the lid and the inside cavity of the pump body is slided from top to bottom, thereby realize going out the operation of liquid and last liquid, the lower part of sliding part sets up outer waterproof sealing inclined plane in the use, the sliding part presses and resets after the liquid operation is accomplished and combines the interior waterproof sealing inclined plane that covers to cooperate and realize the waterproof formula design to the pump body is inside, outside water can not enter into the pump body in the use has been guaranteed, and the lower tip of sliding part sets up guide structure and is favorable to when assembling, still make things convenient for the upper and lower slip of sliding part.

Preferably, a liquid spraying channel is arranged in the nozzle part, and a liquid spraying port is arranged at the outlet end of the liquid spraying channel; the sliding part comprises an inserting body and a sliding body which are coaxially arranged, the inner wall of the upper part of the inserting body is provided with multiple anti-pull-off sealing clamping grooves, and the inner wall of the lower part of the inserting body is provided with a pump head positioning rotation stopping structure; a spring cavity is formed between the outer wall of the plug-in body and the inner wall of the sliding body; an air inlet loop is formed between the inner wall and the outer wall of the sealed spring and the spring cavity, and an air inlet groove communicated with the air inlet loop is formed in the top of the cavity, connected with the pressing part, of the spring cavity. The inside hydrojet passageway that is provided with of nozzle portion, hydrojet passageway's exit end is provided with the hydrojet mouth, make things convenient for the blowout of liquid, and the sliding part is provided with the socket and the slider, form the spring chamber between socket and the slider, make things convenient for setting up of sealed spring and spring chamber to form the air inlet loop, make things convenient for outside gas to enter into inside the pump body and then enter into inside the liquid container through the air inlet loop, conveniently go up the liquid operation, and set up multiple anti-pulling and take off sealed draw-in groove in socket's inside is for the piston rod and press the anti-pulling and take off formula sealing connection of pump head, guaranteed in the use and in the transportation press the pump head and can not drop, the needs of electricity merchant express delivery have been satisfied, also effectively prevented the emergence of falling brokenly or weeping phenomenon. Be provided with the pump head location on the lower part inner wall of the plug-in body and spline the structure, the pump head location splines the structure and realizes the fast assembly location with the body of rod location spline structure cooperation on the piston rod, both made things convenient for automatic identification location equipment, the requirement of customer equidirectional location matching design has been solved, location structure can set up and be different structural shape, can effectively prevent to press the relative rotation between pump head and the piston rod again simultaneously, the stability of pressing the operation has been realized, the whole sealing performance of liquid pump has been improved.

Preferably, the combined cover comprises a cover body and a water blocking body which are integrally arranged, the water blocking body and the cover body are coaxially arranged in a cone structure respectively, the outer water blocking cambered surface is arranged on an outer conical surface of the water blocking body, and the inner waterproof sealing inclined surface is arranged on the inner wall of the water blocking body; an outer cambered surface structure is arranged outside the cover body, and the outer water blocking cambered surface and the outer cambered surface structure form an integrated water blocking and dewatering structure; the inside of lid be provided with pump body sealing connection structure. Combine to cover an organic whole and be provided with lid and manger plate body, the manger plate body sets up on the upper portion of lid and sets up with the lid coaxial line, can effectively prevent outside water from entering into the pump body inside through the manger plate body and the outer manger plate cambered surface on it, take water or under the outside water environment such as shower when the user is hand, water contacts behind the manger plate body because be provided with outer manger plate cambered surface on the manger plate body and can follow the outside downward flow of outer manger plate cambered surface, and can not enter into inside the pump body, the waterproof design of first layer has been realized, and be provided with extrados structure on the lid equally, outer manger plate cambered surface and extrados structure form integral type manger plate dewatering structure from top to bottom, make outside hydroenergy enough flow to the outside along manger. The arrangement of the pump body sealing connection structure is convenient for the sealed pull-off preventing connection of the pump body and the combination cover, and the liquid pump is ensured to be firmly connected and not to be disconnected in the use process.

Preferably, the piston assembly comprises a piston rod and a piston, the outer wall of the upper part of the piston rod is sequentially provided with a multiple-sealing pull-off preventing convex ring, a rod body positioning rotation stopping structure and a locking stopping piece from top to bottom, a liquid outlet channel is arranged inside the piston rod, a piston connecting part is arranged at the lower part of the piston rod, the piston and the piston connecting part are connected through a group of two-way sealing structures, and a liquid inlet communicated with the liquid outlet channel is formed in the piston connecting part. The outer wall of the upper part of the piston rod is provided with a multiple sealing pull-off prevention convex ring to match with the multiple pull-off prevention sealing clamping groove in the pressing pump head, so that pull-off prevention type sealing connection is realized, and the phenomenon that the pull-off is caused in the transportation process in the using process to cause falling breakage or liquid leakage and the like is guaranteed. And the setting of body of rod location spline structure is for the pump head location spline structure with pressing the pump head inside cooperatees, realizes the quick discernment location in the assembling process to and the location spline function after the equipment, the setting through this kind of location spline structure can also satisfy different customers to the different requirements of installation direction. Set up on the piston rod and open the shutting piece, be in order to realize the locking of turning left and right or open the operation with the locking groove on the connecting piece with pressing down the groove cooperation, can realize the locking to pressing down the pump head through opening the cooperation of shutting piece and locking groove, when pressing down the pump head and being in the locking state, press the operation that the pump head can not produce the up-and-down motion, thereby avoided the emergence of the liquid blowout weeping phenomenon that leads to because of becoming flexible in the transportation, it still has the function of preventing changeing to open the shutting piece, can effectively avoid the maloperation or touch the automation of in-process and open through the design that prevents changeing the function. The liquid outlet channel is arranged in the piston rod, liquid is discharged from the interior of the piston rod, and contact with other components is avoided. The piston connecting part arranged at the lower part of the piston rod is matched with the piston through the piston connecting part, in the liquid discharging and liquid feeding operation process, the sealing operation in the liquid discharging and liquid feeding process is realized between the piston and the piston connecting part through a bidirectional sealing structure, and the liquid leakage phenomenon can not occur in the inclined or turnover state under the locking and opening states by adopting the bidirectional sealing structure. The liquid outlet device has the advantages that liquid can only be discharged through the liquid inlet on the piston connecting part in the liquid outlet process, the liquid inlet is effectively sealed in the liquid outlet process, the effective liquid outlet operation is realized, the phenomenon that liquid is pressed out in the liquid outlet process is avoided, and the independence of liquid outlet and liquid outlet is realized.

Preferably, the locking and unlocking stopping member is provided with a locking guide structure at one side facing the locking direction, and the opening and closing locking member is provided with a stopping structure at one side facing the opening direction. The locking and unlocking piece is provided with a locking guide structure on one side facing to the locking direction, so that the locking and unlocking piece is screwed in from loose to tight in the screwing process, meanwhile, the locking and unlocking piece can be smoothly screwed into the locking groove on the connecting piece to realize locking by utilizing the elasticity of plastics, and the stopping structure is arranged to realize locking and positioning of the locking state, so that the liquid leakage caused by the unlocking caused by the misoperation of children or the loosening caused by touching in the transportation process is prevented; when needs are opened, owing to be provided with backstop structure, consequently, need certain opening force when opening, just can open the pressure pump head through applying the opening force that is greater than backstop structure, and the size of opening force can be adjusted according to backstop structure etc..

Preferably, the connecting piece sealing plug-in card is connected inside the pump body, a clamping positioning structure and an elastic sealing body are arranged on the outer wall of the connecting piece, an air inlet channel is formed between the outer wall of the upper part of the connecting piece and the inner wall of the combined cover as well as the inner wall of the pump body, and an open-close type air channel is formed between the inner wall of the connecting piece and the outer wall of the piston rod; the lower end in the connecting piece is provided with a plurality of air outlets, and an air outlet channel is formed between the outer wall of the lower part of the connecting piece and the inner wall of the pump body. Set up joint location structure on the connecting piece is in order to realize being connected simultaneously and carry out the joint location with pump body inside, can fix a position fast and connect in the assembling process, and the setting of elastic seal body is in order to realize and the sealed cooperation between the pump body inner wall, guarantee the leakproofness between connecting piece and the pump body, thereby improve the whole sealing performance of the pump body, the elastic seal body can be different structural shapes such as elastic cone or elastic horn body, inlet channel's setting is inside entering into inlet ring way through inlet channel for convenient external gas, then the rethread formula gas passage of opening and closing, outlet channel enters into inside the liquid container, the design of this kind of gas circuit can also utilize the spring-pressing structure realization of spring to compress gas when guaranteeing that gas effectively gets into, thereby realize the travelling comfort design of pressing the operation.

Preferably, the upper end in the connecting piece is provided with a locking groove and a pressing groove for realizing opening and closing, and the depth of the locking groove is smaller than that of the pressing groove; the locking groove with press the groove between be provided with the structure of opening of adjusting opening power size, open the structure including along the integrative locking cambered surface, the locking inclined plane that is the slope structure setting of circumference and open the cambered surface. The locking groove is arranged in the connecting piece to realize locking and positioning of the pressing pump head, the pressing groove is arranged to realize pressing operation of the pressing pump head, and the left-right locking design of the pressing pump head is realized through the design of the structures of the locking groove and the pressing groove, so that the locking or unlocking operation is facilitated, and the assembling and positioning are facilitated; different users have different requirements to opening power size in realizing the use, require differently to opening power size in order to satisfy different users, the structure of opening of adjusting opening power size is set up in locking groove and the connecting piece inside between the pressing groove, realize opening the regulation of power size through opening the structure, concrete design can be so that open the knot and think about adjusting opening power to the radial extension degree of depth difference of connecting piece, it then opens the power increase to open the center of connecting piece to be close to in the structure footpath, it then opens the power and reduces to keep away from the center of connecting piece. The locking cambered surface and the locking inclined surface can conveniently open and close the screw in of the locking piece, and the opening cambered surface is used for enabling the opening and closing locking piece to smoothly slide out under the action of opening force by applying the opening force in the opening process, so that unlocking is realized.

Preferably, the thread cover is internally provided with a rotation-stopping, chamfering and anti-loosening structure capable of adjusting the magnitude of loosening torque. The inside splining of adjustable pine torsion size of returning of screw cap is cut anti loosening structure, and the setting of splining is cut anti loosening structure and can be made things convenient for screw cap and liquid container's swivelling joint, then realizes the locking function after connecting simultaneously, then need apply certain pine torsion of returning when opening and just can open, has effectively prevented transportation or maloperation and has opened being connected of screw cap and liquid container, leads to liquid to spill.

Preferably, the rotation-stopping, beveling and anti-loosening structure is composed of a plurality of elastic blocks, the elastic blocks are obliquely arranged on the inner wall of the threaded cover along the rotation locking direction, and a loosening-returning torque groove is formed between the elastic blocks and the inner wall of the threaded cover. The anti-rotation beveling anti-loosening structure is arranged to be an elastic block, the elastic block is obliquely arranged and is provided with a loosening returning torque groove between the elastic block and the inner wall of the threaded cover, the elastic block is obliquely arranged and forms an elastic structure between the elastic block and the loosening returning torque groove in the use process, the rotation tightening process can be conveniently connected with a liquid container, when the anti-rotation beveling anti-loosening structure is required to be opened, certain loosening returning torque is required to be exerted due to the blocking effect of the oblique extending end of the elastic block, the loosening returning torque is determined according to the radial depth of the loosening returning torque groove relative to the center of the threaded cover, the larger the depth is, the larger the loosening torque is, the smaller the depth is, the smaller the loosening torque is returned, the effective locking and positioning functions are realized by the design of the anti-rotation beveling anti-loosening structure, and the design requirements of different users on the.

Preferably, a container seal is integrally provided at an upper portion of the pump body. The container sealing element is integrally arranged on the pump body, the pump body and the liquid container are sealed through the container sealing element in the using process, the problems that sealing is carried out through a sealing gasket in the prior art, the sealing effect is poor, liquid leakage is easy to occur and the like are solved, meanwhile, the number of parts is reduced, the assembly process is simplified, the whole pump body is simpler and more convenient to operate, and the overall sealing performance is better. The container closure may be provided in the shape of a plug to make effective sealing easier.

Preferably, a through connecting piece mounting cavity, an air cavity, a liquid pressing cavity and a liquid passing cavity are sequentially arranged in the pump body from top to bottom, and the diameters of the connecting piece mounting cavity, the air cavity, the liquid pressing cavity and the liquid passing cavity are sequentially reduced; the cavity wall of the air cavity is provided with an air outlet; a connecting piece positioning structure is arranged in the connecting piece mounting cavity; the connecting part of the hydraulic cavity and the liquid passing cavity is provided with a valve seat, the valve piece is movably arranged inside the valve seat, the outside of the pump body is provided with a pump body positioning structure, and the inner wall of the liquid passing cavity is provided with a plurality of straw anti-falling structures. The diameters of the cavities in the pump body are sequentially and progressively decreased, so that the functional requirements of different cavities in the pump body are met, the overall compact design of the pump body is realized, and the air cavities are provided with air outlets so that external air can enter the liquid container through the air outlets conveniently. The valve piece is arranged in the valve seat in an opening and closing mode, and through the matching of the valve piece and the valve seat, when the liquid feeding operation is carried out, the valve piece can automatically float upwards and open through suction force, so that liquid enters the hydraulic cavity of the pump body from the side face of the valve piece through the liquid cavity; when the liquid outlet operation is carried out, the valve piece is tightly pressed and sealed on the valve seat under the action of the compression force, and the liquid channel on the liquid in the liquid container is blocked.

The invention has the beneficial effects that: 1. adopt the manger plate structure, make water can not flow into the pump body in, thoroughly realized waterproof function, make the inside liquid of liquid container can not contact outside leading-in water, thereby effectively stopped the emergence that outside water entered into the liquid container in the use and caused the risk of liquid living fungus.

2. Adopt sealed spring and with the spring setting inside pressing the pump head, form spring compression and atmospheric pressure structure in the use, press and feel effectual, can adjust the size according to the user according to the pressure intensity to realize the control of liquid measure size.

3. The anti-pulling-off structure is arranged between the pressing pump head and the piston assembly and between the pump body and the combined cover, the pulling-off force is increased, the anti-falling performance is strong, and the problem that the existing liquid pump is easy to fall off and break leakage in the using process is effectively solved.

4. Be provided with location structure between each part, location structure's angle can be set for according to the operation requirement moreover for every part can all be assembled according to the angle of design in the assembly process, has also satisfied the different requirements of different customers to the installation angle simultaneously.

5. The anti-rotation and anti-loosening structure is arranged between the pressing pump head and the combined cover, between the threaded cover and the liquid container and the like, so that the purposes of no loosening and no liquid leakage in the transportation process are realized; but also realizes the adjustable design of the opening force and the loosening torque force.

6. The pump body is integrally provided with the sealing element, so that a gasket sealing structure is omitted, the sealing effect is improved, and assembly parts are reduced; the mutual sealing structure between the matching parts ensures that the whole sealing performance of the liquid pump is good, and avoids the phenomena of liquid leakage and water infiltration.

7. All components adopt full-plastic structures, can be completely recycled, and are environment-friendly.

Drawings

FIG. 1 is a schematic view of one construction of the liquid pump of the present invention;

FIG. 2 is an exploded view of the liquid pump of the present invention;

FIG. 3 is a cross-sectional structural view of the fluid pump body of the present invention;

FIG. 4 is a schematic view of a seal spring according to the present invention;

FIG. 5 is a schematic view of a pressing pump head according to the present invention;

FIG. 6 is a cross-sectional view of the pump head according to 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 construction of the joint cover of the present invention;

FIG. 9 is a schematic illustration of an exploded construction of the piston assembly of the present invention;

FIG. 10 is a top view of the piston rod of the present invention;

FIG. 11 is a schematic view of a construction of the connector of the present invention;

FIG. 12 is a schematic view of another angle configuration of the connector of the present invention;

FIG. 13 is a schematic view of a screw cap according to the present invention;

FIG. 14 is a schematic view of a pump body according to the present invention;

FIG. 15 is a schematic view of the liquid pumping process of the present invention;

FIG. 16 is a schematic view of the liquid pump intake and feed processes of the present invention;

in the figure: 1. a pump body, 101, a container sealing piece, 102, a connecting piece mounting cavity, 103, an air cavity, 104, a liquid pressing cavity, 105, a liquid passing cavity, 106, an air outlet hole, 107, a connecting piece positioning structure, 108, a valve seat, 109, a pump body positioning structure, 110, a straw anti-dropping structure, 2, a pressing pump head, 21, a nozzle part, 22, a pressing part, 23, a sliding part, 201, a spring cavity, 202, an outer waterproof sealing inclined plane, 203, a guide structure, 204, a liquid spraying channel, 205, a liquid spraying opening, 206, a multiple anti-pulling-off sealing clamping groove, 207, a pump head positioning anti-rotating structure, 208, an air inlet groove, 231, a plug-in body, 232, a sliding body, 3, a combination cover, 31, a cover body, 32, a water blocking body, 301, an inner waterproof sealing inclined plane, 302, an outer water blocking cambered surface, 303, an outer cambered surface structure, 304, a pump body sealing connection structure, 4, a piston assembly, 41, a piston rod, 42, a, 402. the device comprises a rod body positioning rotation-stopping structure, 403, a starting locking stopping piece, 404, a liquid outlet channel, 405, a piston connecting part, 406, an upper liquid port, 407, a locking guide structure, 408, a stopping structure, 409, a two-way sealing structure, 410, an upper sealing cambered surface, 411, a lower sealing ring surface, 421, an upper sealing body, 422, a lower sealing body, 5, a threaded cover, 51, a rotation-stopping oblique cutting and loosening-preventing structure, 52, a loosening-returning torsion groove, 6, a connecting piece, 601, an air outlet, 602, a locking groove 603, a pressing groove, 604, an opening structure, 605, a locking cambered surface, 606, a locking inclined surface, 607, an opening cambered surface 7, a valve piece, 8, a sealing spring, 81, an elastic compression body, 82, an air compressing structure, 9, a water retaining structure, 10, an air inlet cavity, 11, an air inlet ring channel, 12, an air inlet channel, 13, an opening and closing type air channel, 14.

Detailed Description

The technical documents of the present invention will be further described in detail by the following specific embodiments in conjunction with the drawings attached to the specification.

Example 1:

in the embodiment shown in fig. 1, 2 and 3, a liquid pump includes a pump body 1 made of all-plastic materials such as PP, PE, etc., a pressing pump head 2, a combination cover 3, a threaded cover 5, a piston assembly 4, a connecting member 6 and a valve member 7, wherein a spring cavity 201 is arranged inside the pressing pump head 2, a sealing spring 8 is arranged inside the spring cavity 201, and the sealing spring 8 and the spring cavity 201 form a pneumatic elastic structure; a water retaining structure 9 is arranged between the pressing pump head 2 and the combining cover 3; press pump head 2 and piston assembly 4 between be connected through a set of pull-off structure sealing connection that prevents, piston assembly 4 run through inside 6 connecting pieces and with 6 connecting pieces through a set of structure realization start-stop type connection that opens and close of opening and close.

As shown in fig. 4, the sealing spring 8 is a full-plastic sealing structure, and includes a plurality of elastic compression bodies 81 integrally disposed, and a compression structure 82 is formed between the elastic compression bodies 81; an air inlet cavity 10 is arranged inside the sealed spring 8. In this embodiment, sealed spring 8 is through integral type elastic compression body 81 structure 82 of calming anger each other, and the spring chamber between formed vapour-pressure type suppress structure, spring compression in the use, the structure of calming anger compresses the gas around inside and outside the spring, the change of atmospheric pressure size has been realized, the user is when pressing down the operation, because its elasticity size of plastic construction's spring and gas compression process, make wholly press down and feel can be more comfortable, and the pressing force size can be according to the difference of user's dynamics and different, thereby realize pressing down the difference of liquid blowout volume size, make the operation of liquid pump more reasonable, be favorable to reducing extravagantly.

As shown in fig. 3, when the pressing pump head 2 and the combining cover 3 are used in cooperation, a water blocking structure 9 is arranged between the two; the water blocking structure 9 includes an outer waterproof sealing slope 202 provided on the pressing pump head 2, an inner waterproof sealing slope 301 provided on the coupling cover 3, and an outer water blocking arc 302. The water retaining structure 9 forms the first layer waterproof through combining the outer water retaining cambered surface 302 on the cover 3, and is waterproof through pressing outer waterproof sealing inclined plane 202 on the pump head 2 and combining the cooperation of interior waterproof sealing inclined plane 301 on the cover 3 to form the second floor, through the setting of this kind of dual waterproof construction, has effectually stopped outside water and has entered into the inside emergence that leads to the liquid to give birth to the fungus phenomenon of the pump body, has realized the design of pollution-free environment-friendly. The outer waterproof sealing inclined plane 202 in the embodiment is arranged in a structure with a small upper part and a large lower part, and the inner waterproof sealing inclined plane 301 on the corresponding combination cover 3 is also arranged in a structure with a small upper part and a large lower part, and the outer waterproof sealing inclined plane and the inner waterproof sealing inclined plane are mutually matched and sealed when in use, so that water can be effectively prevented from entering.

As shown in fig. 5, the pressing pump head 2 includes a nozzle portion 21, a pressing portion 22 and a sliding portion 23, which are integrally formed, the outer waterproof sealing inclined surface 202 is annularly formed at a lower portion of the sliding portion 23, and a guide structure 203 is formed at a lower end portion of the sliding portion 23. As shown in fig. 6 and 7, a liquid ejecting channel 204 is provided inside the nozzle portion 21, and an outlet end of the liquid ejecting channel 204 is provided with a liquid ejecting port 205; the sliding part 23 comprises an inserting body 231 and a sliding body 232 which are coaxially arranged, the inner wall of the upper part of the inserting body 231 is provided with a multiple anti-pulling-off sealing clamping groove 206, and the inner wall of the lower part of the inserting body 231 is provided with a pump head positioning rotation stopping structure 207; a spring cavity 201 is formed between the outer wall of the plug-in body 231 and the inner wall of the sliding body 232; an air inlet loop 11 is formed between the inner wall and the outer wall of the sealed spring 8 and the spring cavity 201, and an air inlet groove 208 communicated with the air inlet loop 11 is arranged at the top of the cavity where the spring cavity 201 is connected with the pressing part 22. In this embodiment, the pump head positioning rotation stopping structure 207 is a square rotation stopping groove. The air inlet groove 208 is formed between the baffle plates by a plurality of baffle plates arranged inside the pressing pump head, and when the air pump is used, the top of the sealing type spring is pressed against the baffle plates, so that the air inlet groove 208 is communicated with the air inlet cavity 10. The pressing pump head is made of all-plastic materials integrally, the structure is good in toughness and strong in falling resistance in the using process, the operation of liquid discharging and liquid feeding is achieved by pressing the pump head through the operation, the outer waterproof sealing inclined surface arranged on the lower portion of the sliding portion is in the using process, the sliding portion resets after the liquid feeding operation is completed and is matched with the inner waterproof sealing inclined surface on the combination cover to achieve waterproof sealing inside the pump body, and external water of the liquid pump cannot enter the pump body and enter the liquid inside in the using process, so that liquid bacteria are generated. The nozzle part is used for realizing the ejection of liquid, the inside is provided with a liquid spraying channel with an arc structure, the outlet end of the liquid spraying channel is provided with a liquid spraying port which is beneficial to the ejection of the liquid, a spring cavity is formed between the plug-in body and the sliding body, the sealing type spring is arranged in the spring cavity and forms an air inlet loop with the spring cavity, external gas can conveniently enter the inside of the pump body through the air inlet loop and then enter the inside of the liquid container, the liquid feeding operation is convenient, the sealing type spring is arranged in the pressing pump head, the design of compact structure of the liquid pump is realized, the pollution caused by overlarge structure of the pump body or easy contact with the liquid due to the arrangement of the spring in the pump body is also avoided, meanwhile, the comfortable design of the pressing operation is also realized, the full plastic spring is matched with compressed gas, the comfortable feeling can be brought to the operation of a user, and the strong, the multiple anti-pulling-out sealing clamping grooves are formed in the plug body, and the multiple sealing anti-pulling-out convex rings on the piston rod are matched, so that the anti-pulling-out sealing connection of the piston rod and the pressing pump head is realized, the pressing pump head is guaranteed not to fall off in the using process and the transportation process, the requirement of e-commerce express delivery is met, and the phenomenon of falling or liquid leakage is effectively prevented. Be provided with the pump head location on the lower part inner wall of the socket body and spline the structure, the pump head location splines the structure and splines the structure cooperation with the body of rod location on the piston rod and has realized the fast assembly location, can make things convenient for automatic identification location equipment, the requirement of customer to the not equidirectional location matching design has been solved, location structure can set up and be different structural shape, can effectively prevent to press the relative rotation between pump head and the piston rod again simultaneously, the stability of pressing the operation has been realized, the whole sealing performance of liquid pump has been improved.

As shown in fig. 8, the combining cover 3 includes a cover body 31 and a water-blocking body 32 integrally arranged, the water-blocking body 32 and the cover body 31 are coaxially arranged in a cone structure, the outer water-blocking arc surface 302 is arranged on the outer conical surface of the water-blocking body 32, and the inner waterproof sealing inclined surface 301 is arranged on the inner wall of the water-blocking body 32; an outer arc surface structure 303 is arranged outside the cover body 31, and the outer water blocking arc surface 302 and the outer arc surface structure 303 form an integrated water blocking and dewatering structure; the cover 31 is provided with a pump body sealing connection structure 304 inside. In this embodiment, the pump body sealing connection structure 304 is a plurality of annular grooves and annular protrusions. Combine the lid to be through the integrative injection moulding of plastic materials, in order to realize the manger plate function, can effectively prevent through manger plate body and the outer manger plate cambered surface on it that outside water from entering into the pump body inside, take water or under the outside water environment such as shower when the user is hand, water contacts behind the manger plate body because be provided with outer manger plate cambered surface on the manger plate body and can follow the outside downward flow of outer manger plate cambered surface, and can not enter into inside the pump body, the waterproof design of first layer has been realized, and be provided with extrados structure on the lid equally, extrados cambered surface and extrados structure form integral type manger plate dehydration structure from top to bottom, make outside hydroenergy enough flow outside along manger plate dehydration structure. The combination lid passes through the inclined plane cooperation with the sliding body of pressing on the pump head and realizes the waterproof design of second floor, simultaneously, still is provided with pump body sealing connection structure inside the combination lid, has realized that the pump body is connected with the sealed pull-off preventing formula that combines the lid, has guaranteed that the fluid pump firm in connection can not throw off in the use.

As shown in fig. 9, the piston assembly 4 includes a piston rod 41 and a piston 42, the outer wall of the upper portion of the piston rod 41 is sequentially provided with a multiple-sealing pull-off preventing convex ring 401, a rod positioning rotation stopping structure 402 and a starting and locking stopping member 403 from top to bottom, a liquid outlet channel 404 is arranged inside the piston rod 41, a piston connecting portion 405 is arranged at the lower portion of the piston rod 41, the piston 42 is connected with the piston connecting portion 405 through a set of two-way sealing structures 409, and the piston connecting portion 405 is provided with an upper liquid outlet 406 communicated with the liquid outlet channel 404. In this embodiment, the bidirectional sealing structure 409 includes an upper sealing arc surface 410 and a lower sealing ring surface 411 disposed on the piston rod, and an upper sealing body 421 and a lower sealing body 422 disposed on the piston, respectively.

As shown in fig. 10, the locking guide 407 is disposed on the locking member 403 at a side facing the locking direction, and the stopping member 408 is disposed on the locking member 403 at a side facing the opening direction. In this embodiment, the locking guide structure 407 is a locking guide arc inclined surface, the stopping structure 408 is a stopping straight inclined surface extending outward, the locking and unlocking member is provided with a locking guide structure on one side facing the locking direction to facilitate the operation in the locking process, the locking and unlocking member is screwed in from loose to tight in the screwing process, meanwhile, the locking and unlocking member can be smoothly screwed into the locking groove on the connecting member to realize locking by using the elasticity of the plastic, and the stopping structure is arranged to realize locking and positioning in the locking state, so as to prevent the child from being opened due to misoperation or being loosened due to touch in the transportation process, which leads to liquid leakage; when needs are opened, owing to be provided with backstop structure, consequently, need certain opening force when opening, just can open the pressure pump head through applying the opening force that is greater than backstop structure, and the size of opening force can be adjusted according to backstop structure etc..

The connecting piece 6 is connected to the inside of the pump body 1 in a sealing and inserting manner, as shown in fig. 12, a clamping and positioning structure 61 and an elastic sealing body 62 are arranged on the outer wall of the connecting piece 6, an air inlet channel 12 is formed between the outer wall of the upper part of the connecting piece 6 and the inner wall of the combination cover 3 as well as the inner wall of the pump body 1, and an open-close type air channel 13 is formed between the inner wall of the connecting piece 6 and the outer wall of the piston rod 41; the lower end of the inside of the connecting piece 6 is provided with a plurality of air outlets 601, and an air outlet channel 14 is formed between the outer wall of the lower part of the connecting piece 6 and the inner wall of the pump body 1.

As shown in fig. 11, a locking groove 602 and a pressing groove 603 for opening and closing are arranged at the upper end inside the connecting member 6, and the depth of the locking groove 602 is smaller than that of the pressing groove 603; an opening structure 604 for adjusting the opening force is arranged between the locking groove 602 and the pressing groove 603, and the opening structure 604 comprises a locking arc surface 605, a locking inclined surface 606 and an opening arc surface 607 which are arranged along the circumferential direction integrally in an inclined structure.

Press and prevent drawing off structure sealing connection through a set of between pump head 2 and the piston assembly 4, specifically prevent drawing off the bulge loop and press the inside multiple of pump head and prevent drawing off sealed draw-in groove and cooperate through the multiple sealed of piston rod, realized preventing drawing off formula sealing connection between the two, can not throw off in the transportation in the use, can not lead to falling brokenly or the weeping yet. The body of rod location splines the structure and presses the inside pump head location of pump head to spline the structure and cooperatees, realizes the quick discernment location in the assembling process to and the location after the equipment splines the function, splines the setting of structure through this kind of location and can also satisfy different customers to the different requirements of installation direction. Piston assembly 4 and connecting piece 6 are connected through a set of structure realization start and stop formula of opening and close, specifically, through opening and close locking piece on the piston rod and the locking groove on the connecting piece realize the locking of turning left and right or open the operation with pressing down the groove cooperation, can realize the locking to pressing down the pump head through opening the cooperation of shutting stopping piece and locking groove, when pressing down the pump head and being in the locking state, press the operation that the pump head can not produce the up-and-down motion, thereby avoided in the transportation because of not hard up the emergence of the liquid blowout weeping phenomenon that leads to, it still has the function of preventing changeing to open the shutting stopping piece, can effectively avoid the maloperation or touch the automation of in-process and open through the design that prevents changeing. When the opening and closing locking piece rotates reversely and is matched with the pressing groove, the pressing pump head can drive the piston rod to move up and down, so that the liquid discharging and feeding operations are realized. The liquid outlet channel is arranged in the piston rod, and in the liquid outlet process, liquid is discharged from the interior of the piston rod, so that the contact with other components is avoided. The piston is connected with the piston connecting part at the lower part of the piston rod and is driven by the piston rod to move up and down along the hydraulic cavity, so that the liquid discharging and feeding operations are realized, in the liquid discharging and feeding processes, the sealing operation in the liquid discharging and feeding processes is realized between the piston and the piston connecting part through a bidirectional sealing structure, and the liquid leakage phenomenon can not occur in the inclined or overturning state under the locking and opening states by adopting the bidirectional sealing structure. The liquid outlet device has the advantages that liquid can only be discharged through the liquid inlet on the piston connecting part in the liquid outlet process, the liquid inlet is effectively sealed in the liquid outlet process, the effective liquid outlet operation is realized, the phenomenon that liquid is pressed out in the liquid outlet process is avoided, and the independence of liquid outlet and liquid outlet is realized.

The clamping positioning structure on the connecting piece is connected with the inside of the pump body and is clamped and positioned at the same time, the elastic sealing body on the connecting piece can be quickly positioned and connected in the assembling process, the elastic sealing body on the connecting piece is in sealing fit with the inner wall of the pump body, the sealing performance between the connecting piece and the pump body is ensured, the overall sealing performance of the pump body is improved, the elastic sealing body can be different structural shapes such as an elastic cone body or an elastic horn body, and in the embodiment, the elastic sealing body is an elastic cone body annularly arranged on the connecting piece. Locking design is opened to the left and right sides formula that the inside locking groove of connecting piece and the design of pressing the groove have realized pressing the pump head, clockwise rotation realizes the locking state in realizing the use, the state is then realized opening to the counter rotation, to satisfying the different user requirement of opening the power size difference, the structure of opening of power size is adjusted to inside setting up of connecting piece between locking groove and pressing the groove, realize opening the regulation of power size through opening the structure, concrete design can be so that open the knot design and adjust opening the power to the radial extension degree of depth difference of connecting piece, it is close to then opening the power increase to the center of connecting piece to open the structure footpath, the center of keeping away from the connecting piece then opens the power and reduces. The locking cambered surface and the locking inclined surface can conveniently open and close the screw in of the locking piece, and the opening cambered surface is used for enabling the opening and closing locking piece to smoothly slide out under the action of opening force by applying the opening force in the opening process, so that unlocking is realized.

As shown in fig. 13, a rotation-stopping, chamfering and anti-loosening structure 51 capable of adjusting the magnitude of the loosening torque is arranged inside the screw cap 5. The rotation-stopping, beveling and anti-loosening structure 51 is a plurality of elastic blocks, the elastic blocks are obliquely arranged on the inner wall of the threaded cover 5 along the rotation locking direction, and a loosening-returning torque groove 52 is arranged between the elastic blocks and the inner wall of the threaded cover. The inside splining of adjustable pine torsion size of returning of screw cap is cut anti loosening structure, and the setting of splining is cut anti loosening structure and can be made things convenient for screw cap and liquid container's swivelling joint, then realizes the locking function after connecting simultaneously, then need apply certain pine torsion of returning when opening and just can open, has effectively prevented transportation or maloperation and has opened being connected of screw cap and liquid container, leads to liquid to spill. In the embodiment, the rotation-stopping beveling anti-loosening structure is a plurality of elastic blocks, the elastic blocks are obliquely arranged and are provided with the loosening-returning torque grooves between the elastic blocks and the inner wall of the threaded cover, the elastic blocks are obliquely arranged and form the elastic structure between the elastic blocks and the loosening-returning torque grooves in the use process, the rotation tightening process can be conveniently connected with the liquid container, when the liquid container needs to be opened, a certain loosening-returning torque needs to be applied due to the blocking effect of the oblique extending ends of the elastic blocks, the liquid container can be opened, the loosening-returning torque is determined according to the radial depth of the loosening-returning torque grooves relative to the center of the threaded cover, the larger the depth is, the larger the loosening-returning torque is, the smaller the depth is, the smaller the loosening torque is, the effective locking and positioning functions are realized by the structure, and the design requirements of different users on the loosening-returning torque are.

As shown in fig. 3, 14 and 15, a container seal 101 is integrally provided on the upper portion of the pump body 1. The pump body is internally provided with a through connecting piece mounting cavity 102, an air cavity 103, a hydraulic cavity 104 and a liquid passing cavity 105 from top to bottom in sequence, and the cavity diameters of the connecting piece mounting cavity 102, the air cavity 103, the hydraulic cavity 104 and the liquid passing cavity 105 are sequentially reduced; the cavity wall of the air cavity 103 is provided with an air outlet 106; a connecting piece positioning structure 107 is arranged in the connecting piece mounting cavity 102; the joint of the hydraulic cavity 104 and the liquid passing cavity 105 is provided with a valve seat 108, the valve member 7 is movably arranged inside the valve seat 108, the outside of the pump body is provided with a pump body positioning structure 109, and the inner wall of the liquid passing cavity 105 is provided with a plurality of straw anti-falling structures 110. The outer wall of the upper part of the pump body 1 is provided with an anti-pulling-off sealing structure matched with the pump body sealing connecting structure 304, and the anti-pulling-off sealing structure is a plurality of annular bulges and annular grooves. And a threaded cover supporting ring table is also arranged on the pump body below the pull-off preventing sealing structure. The container sealing piece is integrally arranged on the pump body, in the embodiment, the container sealing piece is a sealing ring plug, and the pump body and the liquid container are sealed through the container sealing piece in the use process, so that the problems of poor sealing effect, easy liquid leakage and the like caused by sealing through a sealing gasket in the prior art are solved, meanwhile, the number of parts is reduced, the simplified assembling process is realized, the whole pump body is simpler and more convenient to operate, and the overall sealing performance is better. The diameters of the cavities in the pump body are sequentially and progressively decreased, so that the functional requirements of different cavities in the pump body are met, the overall compact design of the pump body is realized, and the air cavities are provided with air outlets so that external air can enter the liquid container through the air outlets conveniently. The valve piece is arranged in the valve seat in an opening and closing mode, and through the matching of the valve piece and the valve seat, when the liquid feeding operation is carried out, the valve piece can automatically float upwards and open through suction force, so that liquid enters the hydraulic cavity of the pump body from the side face of the valve piece through the liquid cavity; when the liquid outlet operation is carried out, the valve piece is tightly pressed and sealed on the valve seat under the action of the compression force, and the liquid channel on the liquid in the liquid container is blocked.

Valve member 7 adopts inclined plane seal structure and drag hook can beat the pneumatic valve of structure, valve member 7 is including sealed inclined plane and sealed drag hook of beating, the pneumatic valve can open through the automatic come-up of suction when last liquid, make liquid lateral entering pump body, when pressing down the pump head, the pneumatic valve can seal the valve automatically through compressive force, realize going out the liquid operation, the valve member adopts full environmental protection plastic materials simultaneously, really fuse into an organic whole with main part material, traditional liquid pump adoption stainless steel ball has been got rid of, seal structures such as glass ball, the design that whole components that have realized the liquid pump all have green function.

The following describes the process of pressing the liquid out of the liquid pump in detail, as shown in fig. 15, when in use, the pump head 2 is pressed downward, the pump head is pressed to drive the piston rod and the piston thereon to move downward, at this time, the piston presses the liquid pressing chamber 104 downward, the liquid inside the liquid pressing chamber 104 is pressed, the piston rod moves upward due to friction with the inner wall of the pump body during the movement, the piston rod moves downward to make the upper liquid outlet 406 on the piston rod extend downward into the liquid pressing chamber 104, at this time, the piston is sealed with the upper part of the piston rod, the upper liquid outlet is communicated with the inside of the liquid pressing chamber, the liquid inside the liquid pressing chamber flows to the liquid outlet channel 404 inside the piston rod under the action of pressure, and is ejected through the liquid ejecting channel 204 on the pump head via the liquid ejecting port 205, thereby achieving the operation.

As shown in fig. 16, when the pressing pump head 2 is released, the full-plastic sealing type spring 8 drives the pressing pump head to reset upwards, the pressing pump head drives the piston rod to move upwards to reset, at this time, external air enters the air inlet loop 11 outside the spring through the air inlet channel 12 and enters the air inlet loop 11 inside the spring through the air inlet groove 208 inside the pressing pump head 2, enters the air cavity 103 through the open-close type air channel 13 in the connecting piece and the air outlet 601 at the lower end, finally enters the liquid container 16 through the air outlet channel 14 and the air outlet 106 on the pump body, therefore, the air pressure in the liquid container is larger than the air pressure in the liquid pressing cavity, the valve member 7 can float upwards automatically due to the suction force in the liquid pressing cavity, the sealing between the valve member 7 and the valve seat is eliminated, the liquid feeding channel is opened, the liquid in the liquid container 16 is sucked into the liquid pressing cavity 104 through the liquid suction pipe 15, and the next liquid pressing operation can be carried out. When the liquid is discharged by pressing, the valve 7 is automatically sealed by the compression force.

This liquid pump, all adopt the plastic material preparation to the component part of pump, especially adopted the sealed spring of plastic structure, thoroughly cancelled traditional stainless steel spring function, green packaging product design has been realized, the recyclable production uses, the consumption of the energy has been reduced, destroy to environmental pollution has been eliminated, form vapour-pressure type suppressing structure between sealed spring and the spring chamber, this kind of unsmooth extension scalable compression sealed spring, form spring compression and air pressure structure in the use, it is effectual to press, can adjust the size according to the pressure intensity according to the user, thereby realize out the control of liquid volume size, thoroughly cancelled traditional stainless steel spring press the problem that the pressing force size that the in-process produced is not adjustable because of the rigidity, green design has been realized, the recyclable production uses.

Simultaneously, this liquid pump has designed the manger plate structure, makes water can not flow into the pump body, has reduced simultaneously and has pressed the pump head and combine the joint gap between the lid, and water can not flow into the pump body yet when using for a long time, has thoroughly realized waterproof function, makes the inside liquid of liquid container can not contact outside leading-in water, thereby has effectively stopped outside water and has entered into the emergence that causes the risk that liquid grows the fungus in liquid container in the use.

Press pump head and piston assembly and through a set of pull-off preventing structure sealing connection, the problem that the pump head drops easily in the use has effectively been solved current liquid pump, piston assembly and connecting piece realize the locking formula through a set of locking structure and are connected, when pressing pump head locking, have the locking function of splining, when opening, through setting up the size of locking opening force, satisfy the requirement of different notes opening force and effectively prevent to loosen and the weeping in the transportation, the requirement of present electricity merchant express delivery and safe handling has been satisfied.

This liquid pump, in order to solve current liquid pump and need require highly uniform to the assembly angle of every part and product in the equipment process, bring for production and greatly inconvenient and the inconvenient scheduling problem of installation, this liquid pump is to the pump body, the connecting piece piston rod, press the pump head and all designed location stall isotructure, but automatic identification in the equipment process, the location still has the stall function soon after the installation, both solved the customer and all can the demand of matcing to any direction of installation angle, can realize the holistic falling of preventing of liquid pump again and break the ability of leaking liquid.

The bottom end in the screw cap is additionally provided with a rotation-stopping beveling anti-loosening function, the screw cap is pushed easily when being rotated clockwise and matched with a liquid container, the screw cap is difficult to open when being fastened by a rotation-stopping position, a certain loosening-returning torsion force is required when the screw cap is opened, the loosening-returning torsion force can be designed according to the difference of each client on the loosening-returning torsion force, the rotation-stopping beveling anti-loosening structure is designed, the radial depth work of the structure is different, and the problem that each client has different requirements on the torsion force can be solved. After the threaded cap is assembled, a certain gap is reserved between the threaded cap and each matched component, so that the threaded cap can rotate 360 degrees, and the requirement that the threads of a bottle opening of a customer can be matched freely is met.

Also be equipped with the locking function of splines when pressing pump head locking, be provided with guide structure because of on the connecting piece during locking, the locking process is pressed the pump head and is driven the locking piece of opening on the piston rod and is stopped by the elasticity toward tight screw in locking groove, utilize the elasticity screw in of plastics self to locking groove, when opening, owing to be provided with backstop structure on opening and close the locking piece, can produce certain opening force, and the size of opening force, then can adjust to the degree of depth size that the center extends through opening the structure on the adjustment connecting piece, the degree of depth of opening the structure is set for in the accessible change mould mold insert in actual production process, thereby satisfy the requirement of different customers to liquid pump opening force size, owing to be provided with the locking function of splines, the product can not loosen on the way in the transportation, phenomenons such as weeping.

Be provided with the manger plate body on combining to cover upper portion, be provided with the outer manger plate cambered surface to the epirelief on the manger plate body, make water can not flow in the pump body, the clearance between pressing the pump head and combining the lid has been reduced simultaneously, the setting is slope seal structure, sealed cooperation structure through outer waterproof sealing inclined plane and interior waterproof sealing inclined plane, water can not flow in the pump body in long-term use in-process normal water yet, the dual waterproof design of the pump body has been realized, make the liquid pump thoroughly realize waterproof functional design, make liquid can not contact outside leading-in water, the emergence of the bacterium risk has been brought with the water mixing to inside liquid of liquid container has been avoided.

This liquid pump, traditional packing can't satisfy the demand of present electricity merchant express delivery, falls the damage easily in the transportation, for solving the new demand of new era electricity merchant shopping, for this reason, this liquid pump has carried out the improvement of preventing pulling off, stopping new constructional force such as location to the adapting unit of each part, and each part all adopts plastic toughening material to make simultaneously, has solved the difficult problem damaged when falling completely, has realized green ecological environmental protection design. The container sealing part is integrally arranged on the pump body, the container sealing part adopts an inner plug structure and is integrally sealed with the liquid container, the structure that the existing liquid pump is sealed through a gasket is eliminated, the waste of plastic raw materials is reduced, and the overall sealing performance of the liquid pump is improved. The piston adopts a bidirectional double-sealing structure, and the liquid leakage phenomenon can not occur when the piston is inclined or overturned in the locking and opening states. The pipette is connected with the pump body and also adopts a multiple-buckling-position pull-off structure, so that the pull-off force of the pipette is greatly increased, and the pipette cannot fall off in the using process.

The person skilled in the art will be able to implement the invention on the basis of the above-described embodiments. In addition, the above-described embodiments are merely examples of the present invention, and are generally not all examples of the present invention. Therefore, all other technical documents and embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a liquid pump, includes pump body (1), the pressure pump head (2) of plastic material preparation, combines lid (3), screw thread lid (5), piston assembly (4), connecting piece (6) and valve member (7), its characterized in that: a spring cavity (201) is arranged in the pressing pump head (2), a sealing spring (8) is arranged in the spring cavity (201), and the sealing spring (8) and the spring cavity (201) form a pneumatic elastic pressing structure; a water retaining structure (9) is arranged between the pressing pump head (2) and the combining cover (3); press pump head (2) and piston assembly (4) between through a set of pull-off structure sealing connection that prevents, piston assembly (4) run through inside connecting piece (6) and open and close the structure with connecting piece (6) through a set of and realize opening and close the formula and be connected.

2. A liquid pump as defined in claim 1, wherein: the sealed spring (8) is a full-plastic sealing structure and comprises a plurality of elastic compression bodies (81) which are integrally arranged, and a gas compression structure (82) is formed between the elastic compression bodies (81); an air inlet cavity (10) is arranged in the sealed spring (81).

3. A liquid pump as defined in claim 1, wherein: the water retaining structure (9) comprises an outer waterproof sealing inclined surface (202) arranged on the pressing pump head (2), an inner waterproof sealing inclined surface (301) arranged on the combination cover (3) and an outer water retaining arc surface (302).

4. A liquid pump according to claim 3, wherein: the pressing pump head (2) comprises a nozzle part (21), a pressing part (22) and a sliding part (23) which are integrally arranged, the outer waterproof sealing inclined surface (202) is annularly arranged at the lower part of the sliding part (23), and the lower end part of the sliding part (23) is provided with a guide structure (203).

5. A liquid pump according to claim 4, wherein: a liquid spraying channel (204) is arranged in the nozzle part (21), and a liquid spraying opening (205) is formed at the outlet end of the liquid spraying channel (204); the sliding part (23) comprises an inserting body (231) and a sliding body (232) which are coaxially arranged, the inner wall of the upper part of the inserting body (231) is provided with a multiple anti-pull-off sealing clamping groove (206), and the inner wall of the lower part of the inserting body (231) is provided with a pump head positioning rotation-stopping structure (207); a spring cavity (201) is formed between the outer wall of the plug-in body (231) and the inner wall of the sliding body (232); an air inlet loop (11) is formed between the inner wall and the outer wall of the sealed spring (8) and the spring cavity (201), and an air inlet groove (208) communicated with the air inlet loop (11) is formed in the top of the cavity, connected with the pressing part (22), of the spring cavity (201).

6. A liquid pump according to claim 3, wherein: the combined cover (3) comprises a cover body (31) and a water blocking body (32) which are integrally arranged, the water blocking body (32) and the cover body (31) are coaxially arranged in a cone structure respectively, the outer water blocking arc surface (302) is arranged on the outer conical surface of the water blocking body (32), and the inner waterproof sealing inclined surface (301) is arranged on the inner wall of the water blocking body (32); an outer arc surface structure (303) is arranged outside the cover body (31), and the outer water blocking arc surface (302) and the outer arc surface structure (303) form an integrated water blocking and dewatering structure; the pump body sealing connection structure (304) is arranged in the cover body (31).

7. A liquid pump as defined in claim 1, wherein: piston assembly (4) include piston rod (41) and piston (42), the upper portion outer wall of piston rod (41) on top-down set gradually multiple sealed pull-off prevention bulge loop (401), body of rod location spline structure (402) and open shutting and stop piece (403), the inside of piston rod (41) be provided with liquid outlet channel (404), the lower part of piston rod (41) be provided with piston connecting portion (405), piston (42) be connected through a set of two-way seal structure (409) with piston connecting portion (405), piston connecting portion (405) on set up last liquid mouth (406) that communicate liquid outlet channel (404).

8. A liquid pump as defined in claim 7, wherein: the locking and unlocking device is characterized in that a locking guide structure (407) is arranged on one side of the locking and unlocking piece (403) facing to the locking direction, and a stop structure (408) is arranged on one side of the locking and unlocking piece (403) facing to the unlocking direction.

9. A liquid pump as defined in claim 1, wherein: the connecting piece (6) is connected to the inside of the pump body (1) in a sealing and inserting way, a clamping and positioning structure (61) and an elastic sealing body (62) are arranged on the outer wall of the connecting piece (6), an air inlet channel (12) is formed between the outer wall of the upper part of the connecting piece (6) and the inner wall of the combination cover (3) and the inner wall of the pump body (1), and an opening and closing type air channel (13) is formed between the inner wall of the connecting piece (6) and the outer wall of the piston rod (41); the lower end in the connecting piece (6) is provided with a plurality of air outlets (601), and an air outlet channel (14) is formed between the outer wall of the lower part of the connecting piece (6) and the inner wall of the pump body (1).

10. A liquid pump as defined in claim 1, wherein: the upper end in the connecting piece (6) is provided with a locking groove (602) and a pressing groove (603) for realizing opening and closing, and the depth of the locking groove (602) is smaller than that of the pressing groove (603); an opening structure (604) for adjusting the opening force is arranged between the locking groove (602) and the pressing groove (603).

11. A liquid pump according to any one of claims 1 to 10, wherein: the thread cover (5) is internally provided with a rotation-stopping, chamfering and anti-loosening structure (51) capable of adjusting the loosening torque.

12. A liquid pump as defined in claim 11, wherein: the anti-rotation beveling anti-loosening structure (51) is a plurality of elastic blocks, the elastic blocks are obliquely arranged on the inner wall of the threaded cover (5) along the rotation locking direction, and a loosening torque groove (52) is arranged between the elastic blocks and the inner wall of the threaded cover.

13. A liquid pump according to any one of claims 1 to 10, wherein: the upper part of the pump body (1) is integrally provided with a container sealing piece (101).

14. A liquid pump according to any one of claims 1 to 10, wherein: the pump body (1) is internally provided with a through connecting piece mounting cavity (102), an air cavity (103), a hydraulic cavity (104) and a liquid passing cavity (105) from top to bottom in sequence, and the cavity diameters of the connecting piece mounting cavity (102), the air cavity (103), the hydraulic cavity (104) and the liquid passing cavity (105) are sequentially reduced; the cavity wall of the air cavity (103) is provided with an air outlet (106); a connecting piece positioning structure (107) is arranged in the connecting piece mounting cavity (102); a valve seat (108) is arranged at the joint of the hydraulic cavity (104) and the liquid passing cavity (105), the valve piece (7) is arranged in the valve seat (108) in an opening and closing manner, and a pump body positioning structure (109) is arranged outside the pump body (1); the inner wall of the liquid passing cavity (105) is provided with a plurality of suction pipe anti-falling structures (110).