CN218143214U - Prevent emulsion pollution's pressing pump - Google Patents

Abstract

The utility model discloses a prevent emulsion pollution's press pump, include: the pump body is internally provided with a liquid storage cavity; a liquid inlet is arranged between the liquid guide pipe and the liquid storage cavity; the liquid discharge assembly is movably arranged in the pump body in a lifting way, and a liquid discharge channel is arranged in the liquid discharge assembly and can descend to communicate the liquid discharge channel with the liquid storage cavity or ascend to separate the liquid discharge channel from the liquid storage cavity; the pressing head is connected with the liquid drainage assembly, a liquid outlet pipeline is arranged in the pressing head, the input end of the liquid outlet pipeline is communicated with the liquid drainage channel, and the output end of the liquid outlet pipeline is provided with an elastic switch piece which can elastically close or open the liquid outlet pipeline; the suck-back column is movably arranged in the liquid discharge channel in a penetrating way, the upper end of the suck-back column extends into the liquid discharge channel, the lower end of the suck-back column is provided with a plug, the suck-back column can move downwards relative to the liquid discharge component so that the emulsion in the liquid outlet pipeline deviates from the elastic switch piece to flow, at the moment, the elastic switch piece closes the liquid outlet pipeline, and the contact between the external air and the emulsion is avoided, so that the emulsion is prevented from being polluted.

Description

Prevent emulsion pollution's pressing pump

Technical Field

The utility model relates to a prevent emulsion pollution's press pump.

Background

At present, some push pumps have a function of driving the emulsion to suck back, because some part of the emulsion is left in the push head after the emulsion is output, and the emulsion is easy to drip. However, the output channel in the button is still communicated with the outside air, and the emulsion in the output channel is contacted with the outside air and dust, so that the emulsion output again is polluted.

Secondly, the structure that general pressing pump drove emulsion resorption is very complicated, and is higher to the requirement of production, equipment, and wherein, part spare part uses the metal material, and is with higher costs, and when carrying out rubbish recovery according to the pressing pump, need separate the spare part of metal material moreover, causes recovery work inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a prevent pressing pump that emulsion pollutes.

According to the utility model discloses prevent emulsion pollution's press pump, include: the pump body is internally provided with a liquid storage cavity; the liquid guide pipe is arranged on the pump body, and a liquid inlet for communicating the liquid guide pipe and the liquid storage cavity is formed between the liquid guide pipe and the liquid storage cavity; the liquid drainage component is movably arranged in the pump body in a lifting way, a liquid drainage channel which can be communicated with the liquid storage cavity is arranged in the liquid drainage component, and the liquid drainage component can descend to communicate the liquid drainage channel with the liquid storage cavity or ascend to separate the liquid drainage channel from the liquid storage cavity; the pressing head is connected with the liquid drainage assembly, a liquid outlet pipeline is arranged in the pressing head, the input end of the liquid outlet pipeline is communicated with the liquid drainage channel, the output end of the liquid outlet pipeline is provided with an elastic switch piece, and the elastic switch piece can elastically close or elastically open the liquid outlet pipeline; the resorption column is movably arranged in the liquid drainage channel in a penetrating way, the upper end of the resorption column extends into the liquid drainage channel, the resorption column is sealed with the liquid drainage channel, the lower end of the resorption column is provided with a plug capable of opening or closing the liquid inlet, and the resorption column can move downwards relative to the liquid drainage component so that the emulsion in the liquid outlet pipeline flows away from the elastic switch piece.

According to the utility model discloses prevent that emulsion pollutes according to pressure pump has following beneficial effect at least:

when the emulsion pollution prevention pressing pump with the structure outputs emulsion, the pressing head is pressed firstly to drive the liquid drainage assembly to descend and communicate the liquid drainage channel with the liquid storage cavity, the liquid inlet is sealed by the plug at the moment, and the emulsion sequentially passes through the liquid drainage channel and the liquid outlet pipeline and then drives the elastic switch piece to be opened, so that the emulsion is extruded; when a user does not apply force to the press head any more, the liquid drainage assembly resets and rises and separates the liquid drainage channel from the liquid storage cavity, the plug opens the liquid inlet to supplement emulsion in the liquid storage cavity, the resorption column displaces downwards relative to the liquid drainage channel to reduce the pressure in the liquid drainage channel, the emulsion in the liquid drainage pipeline deviates from the movement of the elastic switch piece to realize the resorption function, and the elastic switch piece closes the liquid drainage pipeline at the moment to avoid the contact of external air, dust and emulsion, thereby avoiding the pollution of the emulsion.

The utility model discloses an in some embodiments, the elastic switch spare includes the cover barrel, the one end of cover barrel cup joint in go out the liquid pipeline, the other end of cover barrel is equipped with two piece at least flexible glue films, the flexible glue film can be close to each other in order to seal the cover barrel is kept away from go out the one end of liquid pipeline, the flexible glue film can be strikeed by the emulsion and keep away from each other in order to open the cover barrel is kept away from go out the one end of liquid pipeline.

The utility model discloses an in some embodiments, cover barrel spare is kept away from the one end of liquid pipeline is equipped with the arc diaphragm of outside salient, be equipped with the cross cutting area on the arc diaphragm, the arc diaphragm in four are separated out to the periphery in cross cutting area the flexible glue piece, it is adjacent the flexible glue piece can support each other and lean on with the closure cross cutting area.

In some embodiments of the present invention, the sleeve member and the flexible film are an integrated flexible glue structure.

The utility model discloses an in some embodiments, the outside of going out the liquid pipeline is equipped with the snap ring, the tip of going out the liquid pipeline is equipped with the round sealing ring, sleeve spare cup joint with the tight fit in the outside of sealing ring, sleeve spare is kept away from the one end butt of flexible glue piece in the snap ring, be equipped with the location heavy groove in the button, be equipped with the holding on the sleeve spare in the location anticreep portion in the heavy inslot of location.

The utility model discloses an in some embodiments, the flowing back subassembly is located including flexible outer pipe fitting of the pump body with locate the inside inner pipe fitting of outer pipe fitting, inner pipe fitting movable sleeve is equipped with the piston, the piston with the inner wall in stock solution chamber cooperatees, the lower extreme of inner pipe fitting be equipped with stretch out downwards in the second flaring ring of the lower extreme of outer pipe fitting, the lower extreme of outer pipe fitting is equipped with first flaring ring, first flaring ring with the confession has between the second flaring ring the piston is the high space of its relative up-and-down activity relatively, the lateral part of inner pipe fitting is equipped with and is located in the high space and can communicate the stock solution chamber with the intercommunication mouth of flowing back passageway, the second flaring ring upwards support lean on in the piston and will the intercommunication mouth with the stock solution chamber cuts off mutually.

In some embodiments of the present invention, the piston includes a circular ring plate portion, the inner periphery of the circular ring plate portion is provided with a sleeve portion, the upper end activity of the sleeve portion is stretched and located within the first flared ring, the lower end orientation of the sleeve portion the back of the second flared ring, the outer periphery of the circular ring plate portion is provided with a sealing member matched with the inner peripheral wall of the pump body, and the vertical cross section of the sealing member is hyperbolic.

The utility model discloses an in some embodiments, the inner channel of interior pipe fitting with the inner channel of outer pipe fitting constitutes at least part jointly the drainage channel, the second flaring ring is equipped with the confession resorption post cartridge and stretches into the installation of the inner channel of interior pipe fitting is perforated, the resorption post with the installation is tight fit between perforating and is linked to each other, be equipped with in the pump body and be used for the restriction the limit structure of the stroke of end cap up-and-down motion, the end cap with limit structure contacts and can make the resorption post is relative the installation is perforated elevating movement.

The utility model discloses an in some embodiments, limit structure includes a plurality of locating the inside of the pump body is located the arc rib of the top of inlet, it is a plurality of the arc rib encircles the inlet distributes, the arc rib is by lower up incurving, and is a plurality of the arc rib with inject the confession between the inlet the spacing space of end cap up-and-down motion.

In some embodiments of the present invention, the pump body has a circular truncated cone shaped sleeve with a large upper end and a small lower end, the inlet is disposed at the lower end of the circular truncated cone shaped sleeve, the plug has at least a partial spherical surface, and the spherical surface can seal the periphery of the inlet.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an embodiment of the anti-contamination pressing pump in an emulsion suck-back state;

FIG. 2 is a schematic structural view of an embodiment of the elastic switch member;

FIG. 3 is a schematic diagram of the embodiment of FIG. 1 in a state of discharging the emulsion;

FIG. 4 is an enlarged view of a portion A of the embodiment of FIG. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the orientation description, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1 to 4, the utility model discloses a prevent pressing pump that emulsion pollutes includes: a pump body 100 having a liquid storage chamber 110 therein; a liquid guiding pipe 200 arranged on the pump body 100, wherein a liquid inlet 120 for communicating the liquid guiding pipe 200 and the liquid storage cavity 110 is arranged between the liquid guiding pipe 200 and the liquid storage cavity 110; the liquid discharge assembly 300 is movably arranged in the pump body 100 in a lifting way, is internally provided with a liquid discharge channel 301 which can be communicated with the liquid storage cavity 110 and can descend to communicate the liquid discharge channel 301 with the liquid storage cavity 110 or ascend to separate the liquid discharge channel 301 from the liquid storage cavity 110; the press head 400 is connected with the liquid discharge assembly 300, a liquid outlet pipeline 410 is arranged in the press head 400, the input end of the liquid outlet pipeline 410 is communicated with the liquid discharge channel 301, the output end of the liquid outlet pipeline 410 is provided with an elastic switch piece 500, and the elastic switch piece 500 can elastically close or elastically open the liquid outlet pipeline 410; the suck-back column 600 is movably disposed through the drain assembly 300, the upper end of the suck-back column 600 extends into the drain channel 301, the suck-back column 600 is sealed with the drain channel 301, the lower end of the suck-back column is provided with a plug 610 capable of opening or closing the liquid inlet 120, and the suck-back column 600 can move downward relative to the drain assembly 300 to enable the emulsion in the liquid outlet pipe 410 to flow away from the elastic switch 500.

When the emulsion pollution prevention pressing pump with the structure outputs emulsion, the pressing head 400 is pressed firstly to drive the liquid discharge assembly 300 to descend and communicate the liquid discharge channel 301 with the liquid storage cavity 110, at the moment, the liquid inlet 120 is sealed by the plug 610, and the emulsion sequentially passes through the liquid discharge channel 301 and the liquid outlet pipeline 410 and then drives the elastic switch piece 500 to be opened, so that the emulsion is extruded; when a user does not apply force to the press head 400 any more, the liquid discharge assembly 300 resets and rises and separates the liquid discharge channel 301 from the liquid storage cavity 110, at the moment, the plug 610 opens the liquid inlet 120 to supplement emulsion in the liquid storage cavity 110, the suck-back column 600 moves downwards relative to the liquid discharge channel 301 to reduce the pressure in the liquid discharge channel 301, the emulsion in the liquid outlet pipeline 410 deviates from the elastic switch piece 500 to move to realize the suck-back function, at the moment, the elastic switch piece 500 closes the liquid outlet pipeline 410, and the contact between external air and dust and the emulsion is avoided, so that the emulsion is prevented from being polluted.

Referring to fig. 2, in some embodiments of the present invention, the elastic switch member 500 includes a sleeve member 510, one end of the sleeve member 510 is sleeved on the liquid outlet pipe 410, the other end of the sleeve member 510 is provided with at least two flexible films 520, the flexible films 520 can be close to each other to seal the end of the sleeve member 510 away from the liquid outlet pipe 410, and the flexible films 520 can be impacted by the emulsion and be kept away from each other to open the end of the sleeve member 510 away from the liquid outlet pipe 410. It should be noted that, under the condition that flexible glue piece 520 is not stressed, rely on elasticity of self to draw close each other and close the inside channel of this cover barrel 510 between each flexible glue piece 520 to avoid emulsion direct and air to contact and cause the emulsion to be contaminated, when emulsion extrudes, emulsion dashes open flexible glue piece 520, make the emulsion discharge from the clearance between the flexible glue piece 520, this elastic switch piece 500 simple structure, ingenious, need not opening or closing of independent control elastic switch piece 500.

Referring to fig. 2, in some embodiments of the present invention, one end of the sleeve 510 away from the liquid outlet pipe 410 is provided with an arc-shaped diaphragm protruding outwards, the arc-shaped diaphragm is provided with a cross-shaped cutting belt 530, the arc-shaped diaphragm is separated into four flexible films 520 at the periphery of the cross-shaped cutting belt 530, and the adjacent flexible films 520 can be abutted against each other to close the cross-shaped cutting belt 530. It can be understood that when the flexible film 520 is manufactured, the four flexible films 520 can be formed by only punching the cross cutting belt 530 on the arc-shaped film, the arc-shaped film has enough excess materials to provide conditions for the deformation of the flexible films 520, the four flexible films 520 are closed by closing the cross cutting belt 530, and when the emulsion impacts the four flexible films 520, the cross cutting belt 530 can form a larger liquid outlet to ensure the flow of the emulsion.

Referring to fig. 2, in some embodiments of the present invention, in order to simplify the manufacturing method of the elastic switch member 500, the sleeve member 510 and the flexible film 520 are an integral flexible glue structure, and the elastic switch member 500 can be formed by injection molding or blow molding.

Referring to fig. 1 and 2, in some embodiments of the present invention, in order to install the fixed elastic switch member 500, the outside of the liquid outlet pipe 410 is provided with the stop ring 411, the end of the liquid outlet pipe 410 is provided with a ring of sealing ring 412, the sleeve member 510 is tightly sleeved on the outside of the sealing ring 412, one end of the sleeve member 510, which is far away from the flexible film 520, abuts against the stop ring 411, the press head 400 is provided with a positioning sinking groove 420, and the sleeve member 510 is provided with a positioning anti-dropping portion 511, which is accommodated in the positioning sinking groove 420.

Referring to fig. 1 and 4, in some embodiments of the present invention, the drainage assembly 300 includes an outer tube 310 telescopically disposed in the pump body 100 and an inner tube 320 disposed inside the outer tube 310, the inner tube 320 is movably sleeved with a piston 330, the piston 330 is matched with an inner wall of the reservoir 110, a second flared ring 321 extending downward from a lower end of the outer tube 310 is disposed at a lower end of the inner tube 320, a first flared ring 311 is disposed at a lower end of the outer tube 310, a height space for the piston 330 to move up and down is disposed between the first flared ring 311 and the second flared ring 321, a communication port located in the height space and capable of communicating the reservoir 110 with the drainage channel 301 is disposed at a lateral portion of the inner tube 320, and the second flared ring 321 is upwardly abutted against the piston 330 to separate the communication port from the reservoir 110.

Referring to fig. 1, fig. 3 and fig. 4, it should be noted that when the pressing head 400 is not acted by an external force, the second flared ring 321 is pressed against the piston 330 upward under the action of the spring to isolate the communication port from the reservoir 110, and at this time, the emulsion in the reservoir 110 cannot enter the liquid discharge channel 301, and when the pressing head 400 is pressed by a user, the first flared ring 311 is pressed against the piston 330, a gap is formed between the second flared ring 321 and the piston 330 for the emulsion in the reservoir 110 to enter the liquid discharge channel 301, and as the piston 330 continues to move downward, the internal pressure of the reservoir 110 is greater than the pressure in the liquid discharge channel 301, so that the emulsion is discharged through the liquid discharge channel 301. The split outer pipe 310 and the split inner pipe 320 help to reduce the difficulty of production and processing, and also facilitate the assembly of the piston 330 between the first flared ring 311 and the second flared ring 321.

Referring to fig. 4, in some embodiments of the present invention, the piston 330 includes a circular plate portion 331, the inner periphery of the circular plate portion 331 is provided with a sleeve portion 332, an upper end of the sleeve portion 332 movably extends inside the first flared ring 311, a lower end of the sleeve portion 332 faces the back of the second flared ring 321, the outer periphery of the circular plate portion 331 is provided with a sealing member 333 which is matched with the inner peripheral wall of the pump body 100, and a vertical cross section of the sealing member 333 is hyperbolic. The piston 330 with the above structure can be pushed by the outer tube 310 or the inner tube 320 to move up and down, the sleeve part 332 and the first flared ring 311 cooperate to guide the movement, and the piston 330 can be prevented from falling off from the drainage assembly 300, and the hyperbolic sealing element 333 cooperates with the inner wall of the pump body 100 to achieve a good sealing effect.

Referring to fig. 1 and 3, in some embodiments of the present invention, the internal channel of the inner pipe 320 and the internal channel of the outer pipe 310 jointly constitute at least a part of the drainage channel 301, the second flared ring 321 is provided with an installation perforation for inserting the suck-back column 600 and extending into the internal channel of the inner pipe 320, the suck-back column 600 is connected with the installation perforation by tight fit, a limit structure for limiting the stroke of the plug 610 moving up and down is provided in the pump body 100, and the plug 610 contacts with the limit structure to enable the suck-back column 600 to perform relative installation perforation lifting motion.

It can be understood that when the user presses the button 400, the liquid discharge assembly 300 moves downwards, the first flared ring 311 contacts the piston 330 first, and at this time, there is a gap between the piston 330 and the second flared ring 321 for the emulsion to pass through the communication port and enter the liquid discharge channel 301, and then the liquid discharge assembly 300 moves downwards together with the piston 330 to make the stopper 610 abut against the liquid inlet 120, so as to prevent the liquid suction tube 200 from sucking the emulsion in the bottle into the liquid storage chamber 110, and when the liquid discharge assembly 300 continues to move downwards together with the piston 330 to compress the volume of the liquid storage chamber 110, the upper end of the suction back column 600 moves upwards relative to the inner tube 320, and in this state, the emulsion in the liquid storage chamber 110 can be discharged from the elastic switch 500 through the gap between the piston 330 and the second flared ring 321, the communication port, the liquid discharge channel 301, and the liquid discharge pipe 410 in sequence. When the pressing head 400 is loosened, the liquid discharge assembly 300 moves upwards under the action of the spring, the plug 610 opens the liquid inlet 120, the second flared ring 321 pushes the piston 330 upwards to move and seal a gap between the piston and the liquid inlet, when the plug 610 moves to abut against the limiting structure, the liquid discharge assembly 300 and the piston 330 continue to move upwards together to enlarge the volume of the liquid storage cavity 110, the upper end of the suck-back column 600 moves downwards relative to the inner pipe 320, the pressure in the liquid discharge channel 301 is reduced, and the emulsion in the liquid outlet pipeline 410 can flow back to the liquid discharge channel 301.

Referring to fig. 1 and 3, in some embodiments of the present invention, the limiting structure includes a plurality of arc ribs 710 disposed inside the pump body 100 and located above the liquid inlet 120, the plurality of arc ribs 710 are distributed around the liquid inlet 120, the arc ribs 710 are bent inward from bottom to top, and a limiting space for the plug 610 to move up and down is defined between the plurality of arc ribs 710 and the liquid inlet 120. When the stopper 610 moves upwards to abut against the arc-shaped ribs 710, the arc-shaped ribs 710 prevent the stopper 610 from moving upwards, and a channel which is wide enough is formed between adjacent stoppers to communicate the liquid storage cavity 110 with the liquid guide pipe 200, so that the function of liquid supplement is realized.

Referring to fig. 1 and 3, in some embodiments of the present invention, in order to obtain a good sealing effect of the plug 610 on the liquid inlet 120, the pump body 100 has a truncated cone-shaped sleeve 130 with a large top and a small bottom inside, the liquid inlet 120 is disposed at the lower end of the truncated cone-shaped sleeve 130, and the plug 610 has at least a part of a spherical surface capable of sealing the periphery of the liquid inlet 120.

The utility model discloses a some embodiments, resorption post 600 and end cap 610 plastic construction as an organic whole have avoided the process of assembling resorption post 600 and end cap 610, need not to press a plurality of parts that the pump separation is different materials in addition when rubbish is retrieved, are favorable to the recycle of raw and other materials.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A push pump for preventing contamination of emulsion, comprising:

a pump body (100) provided with a liquid storage cavity (110) inside;

the liquid guide pipe (200) is arranged on the pump body (100), and a liquid inlet (120) which is communicated with the liquid storage cavity (110) is arranged between the liquid guide pipe (200) and the liquid storage cavity (110);

the liquid drainage assembly (300) is movably arranged in the pump body (100) in a lifting mode, a liquid drainage channel (301) capable of being communicated with the liquid storage cavity (110) is arranged in the liquid drainage assembly, and the liquid drainage assembly can descend to enable the liquid drainage channel (301) to be communicated with the liquid storage cavity (110) or ascend to enable the liquid drainage channel (301) to be separated from the liquid storage cavity (110);

the pressing head (400) is connected to the liquid discharge assembly (300), a liquid discharge pipeline (410) is arranged in the pressing head, the input end of the liquid discharge pipeline (410) is communicated with the liquid discharge channel (301), the output end of the liquid discharge pipeline (410) is provided with an elastic switch piece (500), and the elastic switch piece (500) can elastically close or elastically open the liquid discharge pipeline (410);

the resorption column (600) is movably arranged in the liquid drainage channel (301) in a penetrating mode, the upper end of the resorption column (600) is arranged in the liquid drainage channel (300) in a penetrating mode, the resorption column (600) is sealed with the liquid drainage channel (301), the lower end of the resorption column is provided with a plug (610) capable of opening or closing the liquid inlet (120), and the resorption column (600) can move downwards relative to the liquid drainage channel (300) so that emulsion in the liquid outlet pipeline (410) deviates from the elastic switch piece (500) to flow.

2. The anti-emulsion contamination push pump according to claim 1, wherein:

elastic switch spare (500) includes sleeve spare (510), the one end of sleeve spare (510) cup joint in go out liquid pipeline (410), the other end of sleeve spare (510) is equipped with two piece at least flexible glue films (520), flexible glue film (520) can be close to each other in order to seal sleeve spare (510) is kept away from go out the one end of liquid pipeline (410), flexible glue film (520) can be strikeed by the emulsion and keep away from each other in order to open sleeve spare (510) is kept away from go out the one end of liquid pipeline (410).

3. The anti-emulsion contamination push pump according to claim 2, wherein:

one end of the sleeve piece (510) far away from the liquid outlet pipeline (410) is provided with an arc-shaped diaphragm protruding outwards, a cross-shaped cutting belt (530) is arranged on the arc-shaped diaphragm, the arc-shaped diaphragm is provided with four flexible films (520) separated from the periphery of the cross-shaped cutting belt (530), and the adjacent flexible films (520) can be abutted against each other to close the cross-shaped cutting belt (530).

4. The push pump for preventing contamination of emulsion according to claim 2 or 3, wherein:

the sleeve piece (510) and the soft film (520) are of an integrated soft rubber structure.

5. The anti-emulsion contamination push pump according to claim 4, wherein:

the anti-dropping device is characterized in that a stop ring (411) is arranged outside the liquid outlet pipeline (410), a circle of sealing ring (412) is arranged at the end part of the liquid outlet pipeline (410), the sleeve part (510) is tightly sleeved outside the sealing ring (412), one end, far away from the soft rubber sheet (520), of the sleeve part (510) abuts against the stop ring (411), a positioning sunk groove (420) is formed in the button head (400), and a positioning anti-dropping part (511) accommodated in the positioning sunk groove (420) is arranged on the sleeve part (510).

6. The anti-emulsion contamination push pump according to claim 1, wherein:

the liquid discharge assembly (300) comprises an outer pipe (310) and an inner pipe (320), wherein the outer pipe (310) is arranged on the pump body (100) in a telescopic mode, the inner pipe (320) is movably sleeved with a piston (330), the piston (330) is matched with the inner wall of the liquid storage cavity (110), the lower end of the inner pipe (320) is provided with a second flared ring (321) which stretches out of the lower end of the outer pipe (310) downwards, the lower end of the outer pipe (310) is provided with a first flared ring (311), a height space for the piston (330) to move up and down relative to the second flared ring (321) is formed between the first flared ring (311) and the second flared ring, the side portion of the inner pipe (320) is provided with a communication port which is located in the height space and can communicate the liquid storage cavity (110) with the liquid discharge channel (301), and the second flared ring (321) upwards abuts against the piston (330) to separate the communication port from the liquid storage cavity (110).

7. The anti-emulsion contamination push pump according to claim 6, wherein:

the piston (330) comprises a circular plate portion (331), a sleeve portion (332) is arranged on the inner periphery of the circular plate portion (331), the upper end of the sleeve portion (332) movably extends into the first flared ring (311), the lower end of the sleeve portion (332) faces the back face of the second flared ring (321), a sealing element (333) matched with the inner peripheral wall of the pump body (100) is arranged on the outer periphery of the circular plate portion (331), and the vertical section of the sealing element (333) is hyperbolic.

8. The anti-emulsion contamination push pump according to claim 6, wherein:

the internal channel of the inner pipe (320) and the internal channel of the outer pipe (310) jointly form at least part of the liquid drainage channel (301), the second flared ring (321) is provided with an installation through hole for inserting the suck-back column (600) and extending into the internal channel of the inner pipe (320), the suck-back column (600) is tightly connected with the installation through hole, a limiting structure used for limiting the stroke of the up-and-down movement of the plug (610) is arranged in the pump body (100), and the plug (610) is in contact with the limiting structure to enable the suck-back column (600) to move up and down relative to the installation through hole.

9. The anti-emulsion contamination push pump according to claim 8, further comprising:

limit structure includes a plurality of locating the inside of pump body (100) is located arc rib (710) of the top of inlet (120), it is a plurality of arc rib (710) encircle inlet (120) distribute, arc rib (710) is by lower to inside bend, it is a plurality of arc rib (710) with inject the confession between inlet (120) the spacing space of end cap (610) up-and-down motion.

10. The anti-emulsion contamination push pump according to claim 1, wherein:

the pump body (100) is internally provided with a truncated cone-shaped sleeve (130) with a large upper part and a small lower part, the liquid inlet (120) is arranged at the lower end of the truncated cone-shaped sleeve (130), the plug (610) is provided with at least part of spherical surface, and the spherical surface can seal the periphery of the liquid inlet (120).

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