CN110654704A

CN110654704A - All-plastic emulsion pump

Info

Publication number: CN110654704A
Application number: CN201911070613.1A
Authority: CN
Inventors: 傅勇发
Original assignee: SUZHOU YOUBI PACKAGING CO Ltd
Current assignee: SUZHOU YOUBI PACKAGING CO Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-01-07

Abstract

The invention discloses an all-plastic emulsion pump which comprises a fixing part, wherein a pump body extending to the inside of a bottle body is arranged in the fixing part, and a pressing part for pumping contents is arranged on the pump body. The pump body is internally provided with a pump cavity for storing contents, the bottom of the pump cavity is provided with a first liquid inlet, and the top of the pump cavity is sealed with a piston sheet. The first liquid inlet is provided with a one-way valve plate for opening or closing the first liquid inlet. The pump body is also internally provided with a plastic elastic ring which is driven by the pressing part to stretch, the plastic elastic ring is positioned above the piston sheet, the upper end of the plastic elastic ring is connected with the fixing part, and the lower end of the plastic elastic ring is provided with a pushing sheet which can push the piston sheet to move downwards. The pressing part sequentially penetrates through the plastic elastic ring and the piston sheet, a second liquid inlet which can be communicated with the pump cavity is formed in the side wall of the pressing part, and a reset sheet which is used for driving the piston sheet to reset is arranged at the bottom of the pressing part. The invention avoids the compatibility risk of the emulsion pump and the contents, improves the use safety of the contents and is convenient for recovery treatment after use.

Description

All-plastic emulsion pump

Technical Field

The invention relates to the field of emulsion pumps, in particular to an all-plastic emulsion pump.

Background

Emulsion pumps are widely used in household products such as hand lotions, body washes, lotions and the like to pump the contents out of a container such as a bottle for use. Most of the emulsion pumps sold on the market at present have non-plastic components such as metal springs, steel balls or glass beads, and the non-plastic components have the risk of being compatible with contents and are not convenient for recycling after use.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide the all-plastic emulsion pump, which not only avoids the risk of compatibility between the emulsion pump and contents and improves the use safety of the contents, but also is convenient for recovery treatment after use and realizes the cyclic utilization of resources.

In order to achieve the above purposes, the invention adopts the technical scheme that: an all-plastic emulsion pump comprises a fixing part clamped at an opening of a bottle body, a pump body extending into the bottle body is arranged in the fixing part, and a pressing part for pumping contents is arranged on the pump body. The pump body is internally provided with a pump cavity for storing contents, the bottom of the pump cavity is provided with a first liquid inlet communicated with the inside of the bottle body, and the top of the pump cavity is provided with a piston sheet sealed with the inner wall of the pump body. The pump cavity is internally provided with a one-way valve plate attached to the first liquid inlet, and the one-way valve plate is used for opening or closing the first liquid inlet. The pump body is also internally provided with a plastic elastic ring which is driven by the pressing part to stretch, the plastic elastic ring is positioned above the piston sheet, the upper end of the plastic elastic ring is connected with the fixing part, and the lower end of the plastic elastic ring is provided with a pushing sheet which can push the piston sheet to move downwards. The pressing part sequentially penetrates through the plastic elastic ring and the piston sheet, a second liquid inlet capable of being communicated with the pump cavity is formed in the side wall of the pressing part, and a reset sheet used for driving the piston sheet to reset is arranged at the bottom of the pressing part. When the plastic elastic ring is in a natural state, the piston sheet can block the second liquid inlet.

Because the piston sheet and the inner wall of the pump body are arranged in a sealing way, the friction force between the piston sheet and the inner wall of the pump body is greater than the friction force between the piston sheet and the pressing part, and the pressing part can move relative to the piston sheet; the pressing part is pressed downwards, the pressing part can move downwards along the piston sheet, meanwhile, the plastic elastic ring is stretched under the action of the pressing part, the pushing sheet moves downwards, and at the moment, the second liquid inlet on the pressing part moves downwards to be communicated with the pump cavity; the pressing part is continuously pressed, the pushing piece is pressed against the piston piece and pushes the piston piece to move downwards, the volume in the pump cavity is compressed at the moment, and the one-way valve piece is tightly attached to the first liquid inlet; along with the volume in the pump cavity is compressed, the pressure in the pump cavity is increased, so that the content in the pump cavity is pumped out from the second liquid inlet, and the pumping of the content by the pressing part is realized. The pressing part is loosened, the plastic elastic ring resets under the action of elasticity, the pressing part moves upwards relative to the piston sheet, the second liquid inlet moves upwards and is blocked by the piston sheet, and the resetting sheet moves upwards along with the piston sheet and abuts against the piston sheet; along with the continuation of plastic elasticity ring resets, the piece that resets can drive the piston piece rebound, and the volume grow and form the negative pressure state in the pump chamber this moment, and first inlet is opened to the one-way valve block atress for the content in the body can be followed first inlet and is replenished to the pump chamber in.

The invention has the beneficial effects that: the opening or closing of the first liquid inlet is controlled through the one-way valve plate, so that the one-way opening of the first liquid inlet is realized; the plastic elastic ring with tensile elasticity is matched with the pressing part and the piston sheet, so that the pumping of the contents and the timely resetting of the pressing part are realized; the all-plastic emulsion pump not only avoids the compatibility risk of the emulsion pump and the contents, improves the use safety of the contents, but also is convenient to recycle after being used, and realizes the recycling of resources.

Further, press the splenium including pressure head, connecting rod, the needle valve that top-down set up, the inside of pressure head, connecting rod, needle valve is equipped with jointly with the liquid outlet channel of second inlet intercommunication. The connecting rod is located in the plastic elasticity intra-annular, and its upper end is equipped with and is used for the joint the first draw-in groove of pressure head, the lower extreme is equipped with and is used for the joint the second draw-in groove of needle valve. And a connecting rod convex ring which is abutted against the upper end of the pushing sheet is further arranged on the side wall of the lower end part of the connecting rod. The pushing piece can be pushed to move downwards in the process of downwards moving the pressing part through the arrangement of the connecting rod convex ring, and then the plastic elastic ring is stretched.

Further, the needle valve includes the needle bar, the upper end of needle bar passes the promotion piece and with the second draw-in groove block is fixed, the lower extreme of needle bar passes the piston piece is equipped with and is the type structure of falling "T" with it the piece that resets. The side wall of the lower end part of the needle rod is provided with the second liquid inlet. The needle bar can drive the piston plate to reset along with the plastic elastic ring through the inverted T-shaped reset plate.

Further, the piston plate comprises a piston plate body which is horizontally arranged. The middle part of the piston sheet body is provided with a through hole for penetrating the needle rod, and the side wall is provided with a piston lip edge capable of sealing with the inner wall of the pump body. The through hole is downwards provided with a piston column for plugging the second liquid inlet, and the lower end of the piston column is abutted against the reset sheet. Through the sealing of the lip edge of the piston and the inner wall of the pump body, the friction force between the lip edge of the piston and the inner wall of the pump body is larger than the friction force between the needle rod and the through hole, and the needle rod can move up and down along the through hole.

Further, a sealing plunger piston used for sealing the lower end of the piston column is further arranged at the joint of the resetting piece and the needle rod. The gap between the piston column and the needle rod can be sealed when the resetting sheet is abutted to the piston column through the arrangement of the sealing plunger.

Further, the fixing part comprises a lantern ring, a sealing ring and a connecting ring. The lantern ring joint is in on the body, be equipped with on its upper end inner wall and be used for the restriction press the splenium moving range's spacing fender ring. The sealing ring is positioned in the sleeve ring, the inner wall of the sealing ring is downwards provided with a first limiting convex tooth, and the outer wall of the sealing ring is downwards provided with a second limiting convex tooth. The connecting ring is positioned between the first limiting convex tooth and the second limiting convex tooth, the outer wall of the upper end part of the connecting ring is fixedly clamped with the second limiting convex tooth, and the inner wall of the upper end part of the connecting ring is provided with a limiting sheet protruding outwards. And a limiting groove for fixing the plastic elastic ring is formed between the limiting sheet and the first limiting convex tooth in a limiting way. The fixing of the pump body and the plastic elastic ring is realized through the matching of the lantern ring, the sealing ring and the connecting ring.

Further, the lower end of the connecting ring extends into the bottle body, and an accommodating space for accommodating the pump body is defined between the lower end of the connecting ring and the inner wall of the bottle body. The pump body is positioned in the accommodating space, and the upper end of the pump body is provided with a pump body fixing piece which can be clamped between the limiting baffle ring and the bottle body.

Further, a buffer gasket is arranged at the clamping position of the pump body fixing piece and the bottle body.

Further, a pump body caulking groove is formed in the inner wall of the pump body, and a protruding portion capable of being embedded into the pump body caulking groove is formed in the outer wall of the connecting ring. The stability of go-between has been strengthened through setting up of pump body caulking groove and bellying.

Further, the side wall of the pump body is provided with an air hole communicated with the inside of the bottle body, and the bottom of the pump body is connected with a liquid inlet pipe extending to the bottom of the bottle body.

Drawings

FIG. 1 is a schematic sectional view of an embodiment of the present invention;

FIG. 2 is a sectional view of the embodiment of the present invention in a natural state of the pressing portion;

FIG. 3 is a sectional view of the embodiment of the present invention in a state pressed by the pressing portion;

FIG. 4 is a sectional view of the fixing portion and the pump body in accordance with the embodiment of the present invention;

FIG. 5 is an exploded view of the pressing portion according to the embodiment of the present invention;

FIG. 6 is a schematic illustration of a piston plate according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a pump body according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a plastic elastic ring according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of a collar according to an embodiment of the present invention;

FIG. 10 is a schematic structural view of a seal ring according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a connection ring according to an embodiment of the present invention.

In the figure:

1-a bottle body; 2-a fixed part; 21-a collar; 211-limit stop ring; 22-a sealing ring; 221-a limit convex tooth; 222-second limit teeth; 23-a connecting ring; 231-a limiting sheet; 3-a pump body; 31-a first liquid inlet; 32-pump body fixing piece; 33-pump body caulking groove; 34-air holes; 4-pressing part; 41-pressure head; 411-a liquid outlet; 42-connecting rod; 421-a first card slot; 422-a second card slot; 423-connecting rod convex ring; 43-needle valve; 431-a second liquid inlet; 432-a reset plate; 433-needle bar; 434-sealing the plunger; 5-a piston plate; 51-a piston disc body; 511-a via; 52-piston lip; 53-piston column; 6-a one-way valve plate; 7-plastic elastic ring; 71-a push sheet; 72-elastic bumps; 8-a buffer gasket; 9-liquid inlet pipe.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Examples

Referring to the attached drawings 1-4, the all-plastic emulsion pump comprises a fixing part 2 clamped at an opening of a bottle body 1, a pump body 3 extending into the bottle body 1 is arranged in the fixing part 2, and a pressing part 4 for pumping contents is arranged on the pump body 3. The pump body 3 is internally provided with a pump cavity for storing contents, the bottom of the pump cavity is provided with a first liquid inlet 31 communicated with the inside of the bottle body 1, and the top of the pump cavity is provided with a piston sheet 5 sealed with the inner wall of the pump body 3. The pump cavity is internally provided with a one-way valve plate 6 attached to the first liquid inlet 31, and the one-way valve plate 6 is used for opening or closing the first liquid inlet 31. The pump body 3 is also internally provided with a plastic elastic ring 7 which is driven by the pressing part 4 to stretch, the plastic elastic ring 7 is positioned above the piston sheet 5, the upper end of the plastic elastic ring is connected with the fixing part 2, and the lower end of the plastic elastic ring is provided with a pushing sheet 71 which can push the piston sheet 5 to move downwards. The pressing portion 4 sequentially penetrates through the plastic elastic ring 7 and the piston plate 5, a second liquid inlet 431 capable of being communicated with the pump cavity is formed in the side wall of the pressing portion, and a reset plate 432 for driving the piston plate 5 to reset is arranged at the bottom of the pressing portion. When the plastic elastic ring 7 is in a natural state, the piston sheet 5 can block the second liquid inlet 431.

Because the piston sheet 5 and the inner wall of the pump body 3 are arranged in a sealing way, the friction force between the piston sheet 5 and the inner wall of the pump body 3 is greater than the friction force between the piston sheet and the pressing part 4, and therefore the pressing part 4 can move relative to the piston sheet 5; the pressing part 4 is pressed downwards, the pressing part 4 can move downwards along the piston sheet 5, meanwhile, the plastic elastic ring 7 is stretched under the action of the pressing part 4, the pushing sheet 71 moves downwards, and at the moment, the second liquid inlet 431 on the pressing part 4 moves downwards to be communicated with the pump cavity; the pressing part 4 is continuously pressed, the pushing sheet 71 is pressed against the piston sheet 5 and pushes the piston sheet 5 to move downwards, at the moment, the volume in the pump cavity is compressed, and the one-way valve sheet 6 is tightly attached to the first liquid inlet 31; as the volume in the pump cavity is compressed, the pressure in the pump cavity becomes higher, so that the content in the pump cavity is pumped out from the second liquid inlet 431, and the pumping of the content by the pressing part 4 is realized. When the pressing part 4 is released, the plastic elastic ring 7 resets under the action of elastic force, the pressing part 4 moves upwards relative to the piston sheet 5, the second liquid inlet 431 moves upwards and is blocked by the piston sheet 5, and the resetting sheet 432 moves upwards along with the second liquid inlet and abuts against the piston sheet 5; along with the plastic elastic ring 7 continuously resets, the reset sheet 432 can drive the piston sheet 5 to move upwards, the volume in the pump cavity is increased and a negative pressure state is formed, the one-way valve sheet 6 is forced to open the first liquid inlet 31, and therefore the content in the bottle body 1 can be supplemented into the pump cavity from the first liquid inlet 31.

Specifically, referring to fig. 5, the pressing portion 4 includes a pressing head 41, a connecting rod 42, and a needle 43 arranged from top to bottom. Be equipped with liquid outlet 411 on the lateral wall of pressure head 41, be equipped with on the lower tip lateral wall of needle valve 43 second inlet 431, the inside of pressure head 41, connecting rod 42, needle valve 43 is equipped with the intercommunication jointly liquid outlet 411, the liquid outlet of second inlet 431.

The connecting rod 42 is located in the plastic elastic ring 7, the upper end of the connecting rod is provided with a first clamping groove 421 for clamping the pressure head 41, and the lower end of the connecting rod is provided with a second clamping groove 422 for clamping the needle valve 43. The side wall of the lower end part of the connecting rod 42 is also provided with a connecting rod convex ring 423 which is abutted against the upper end of the pushing sheet 71. When the link 42 moves downwards, the link convex ring 423 can push the pushing piece 71 to move downwards, so that the plastic elastic ring 7 is stretched; when the elastic plastic ring 7 is restored, the pushing piece 71 drives the link convex ring 423 to move upward, and further drives the link 42 to move upward.

Needle valve 43 includes needle bar 433, the upper end of needle bar 433 is passed the catch piece 71 and with the second draw-in groove 422 block is fixed, the lower extreme of needle bar 433 passes piston piece 5 and be equipped with and be located the pump chamber reset piece 432. The reset plate 432 is integrally formed with the needle bar 433 and forms an inverted "T" configuration. The second liquid inlet 431 is positioned on the needle bar 433. The reset sheet 432 in the inverted T-shaped structure enables the needle bar 433 to abut against the piston sheet 5 when being reset along with the plastic elastic ring 7, and drives the piston sheet 5 to move upwards for resetting. The joint of the reset plate 432 and the needle bar 433 is further provided with a sealing plunger 434 for sealing a gap between the piston plate 5 and the needle bar 433.

Referring to fig. 6, the piston plate 5 includes a piston plate body 51 disposed horizontally. The middle part of the piston sheet body 51 is provided with a through hole 511 for penetrating the needle bar 433, and the side wall is provided with a piston lip edge 52 capable of sealing with the inner wall of the pump body 3. The through hole 511 is provided with a piston column 53 downward for blocking the second liquid inlet 431, and the lower end of the piston column 53 abuts against the reset plate 432. Through the sealing between the piston lip 52 and the inner wall of the pump body 3, the friction force between the piston lip 52 and the inner wall of the pump body 3 is greater than the friction force between the needle bar 433 and the through hole 511, so that the needle bar 433 can move up and down relative to the through hole 511. The second liquid inlet 431 can be blocked by the piston column 53, and the second liquid inlet 431 is further sealed by the sealing column 53; when the needle bar 433 moves down along the through hole 511, the sealing plunger 434 and the reset piece 432 move down, so that the second loading port 431 can move down to the lower part of the piston column 53 to communicate with the pump chamber.

Referring to fig. 9-11, the fixing portion 2 includes a collar 21, a sealing ring 22, and a connecting ring 23. The lantern ring 21 is clamped on the bottle body 1, and the inner wall of the upper end of the lantern ring is provided with a limiting stop ring 211 used for limiting the moving range of the pressure head 41. The sealing ring 22 is positioned in the lantern ring 21, the inner wall of the sealing ring is provided with a first limiting convex tooth 221 downwards, and the outer wall of the sealing ring is provided with a second limiting convex tooth 222 downwards. The connecting ring 23 is located between the first limiting convex tooth 221 and the second limiting convex tooth 222, the outer wall of the upper end portion of the connecting ring is fixedly clamped with the second limiting convex tooth 222, and the inner wall of the upper end portion of the connecting ring is provided with a limiting sheet 231 protruding outwards. A limiting groove for fixing the plastic elastic ring 7 is defined between the limiting sheet 231 and the first limiting convex tooth 221. Referring to fig. 8, the upper end of the plastic elastic ring 7 is further provided with an elastic protrusion 72 matching with the limiting groove. The fixing of the pump body 3 and the plastic elastic ring 7 is realized through the matching of the lantern ring 21, the sealing ring 22 and the connecting ring 23.

The lower end of the connecting ring 23 extends into the bottle body 1, and a containing space for containing the pump body 3 is defined between the connecting ring and the inner wall of the bottle body 1. The pump body 3 is located in the accommodating space, and the upper end of the pump body is provided with a pump body fixing piece 32 which can be clamped between the limiting baffle ring 211 and the bottle body 1. And a buffer gasket 8 is further arranged at the clamping position of the pump body fixing piece 32 and the bottle body 1.

Referring to fig. 7, a pump body caulking groove 33 is formed on the inner wall of the pump body 3, and a protrusion capable of being inserted into the pump body caulking groove 33 is formed on the outer wall of the connection ring 23. The stability of the connection ring 23 is enhanced by the provision of the pump body indent 33 and the boss.

Be equipped with the gas pocket 34 with the inside intercommunication of body 1 on the pump body 3 lateral wall, 3 bottoms of the pump body are connected with and extend to the feed liquor pipe 9 of 1 bottoms of body, be equipped with the intercommunication in the feed liquor pipe 9 the inside feed liquor channel with first inlet 31 of body 1.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. An all-plastic emulsion pump comprises a fixing part (2) clamped at an opening of a bottle body (1), a pump body (3) extending into the bottle body (1) is arranged in the fixing part (2), and a pressing part (4) for pumping contents is arranged on the pump body (3); the method is characterized in that: a pump cavity for storing contents is arranged in the pump body (3), a first liquid inlet (31) communicated with the interior of the bottle body (1) is formed in the bottom of the pump cavity, and a piston sheet (5) sealed with the inner wall of the pump body (3) is arranged at the top of the pump cavity; a one-way valve plate (6) attached to the first liquid inlet (31) is arranged in the pump cavity, and the one-way valve plate (6) is used for opening or closing the first liquid inlet (31); a plastic elastic ring (7) driven by the pressing part (4) to stretch is further arranged in the pump body (3), the plastic elastic ring (7) is located above the piston sheet (5), the upper end of the plastic elastic ring is connected with the fixing part (2), and the lower end of the plastic elastic ring is provided with a pushing sheet (71) capable of pushing the piston sheet (5) to move downwards; the pressing part (4) sequentially penetrates through the plastic elastic ring (7) and the piston sheet (5), a second liquid inlet (431) capable of being communicated with the pump cavity is formed in the side wall of the pressing part, and a reset sheet (432) for driving the piston sheet (5) to reset is arranged at the bottom of the pressing part; when the plastic elastic ring (7) is in a natural state, the piston sheet (5) can block the second liquid inlet (431).

2. The all-plastic emulsion pump of claim 1, wherein: the pressing part (4) comprises a pressing head (41), a connecting rod (42) and a needle valve (43) which are arranged from top to bottom, and liquid outlet channels communicated with the second liquid inlet (431) are jointly arranged in the pressing head (41), the connecting rod (42) and the needle valve (43); the connecting rod (42) is positioned in the plastic elastic ring (7), a first clamping groove (421) used for clamping the pressure head (41) is formed in the upper end of the connecting rod, and a second clamping groove (422) used for clamping the needle valve (43) is formed in the lower end of the connecting rod; a connecting rod convex ring (423) which is abutted against the upper end of the pushing sheet (71) is further arranged on the side wall of the lower end part of the connecting rod (42).

3. The all-plastic emulsion pump according to claim 2, characterized in that: the needle valve (43) comprises a needle rod (433), the upper end of the needle rod (433) penetrates through the push sheet (71) and is fixedly clamped with the second clamping groove (2), and the lower end of the needle rod (433) penetrates through the piston sheet (5) and is provided with the reset sheet (432) which is of an inverted T-shaped structure; the side wall of the lower end part of the needle rod (433) is provided with the second liquid inlet (431).

4. The all-plastic emulsion pump of claim 3, wherein: the piston sheet (5) comprises a piston sheet body (51) which is horizontally arranged; the middle part of the piston sheet body (51) is provided with a through hole (511) for penetrating the needle rod (33), and the side wall is provided with a piston lip edge (52) capable of sealing with the inner wall of the pump body (3); the through hole (511) is downwards provided with a piston column (53) for blocking the second liquid inlet (431), and the lower end of the piston column (53) is abutted against the reset sheet (432).

5. The all-plastic emulsion pump of claim 4, wherein: and a sealing plunger (434) for sealing the piston column (53) is further arranged at the joint of the resetting sheet (432) and the needle rod (433).

6. An all-plastic emulsion pump according to any one of claims 1 to 5, wherein: the fixing part (2) comprises a lantern ring (21), a sealing ring (22) and a connecting ring (23); the lantern ring (21) is clamped on the bottle body (1), and the inner wall of the upper end part of the lantern ring is provided with a limiting stop ring (211) for limiting the moving range of the pressing part (4); the sealing ring (22) is positioned in the lantern ring (21), the inner wall of the sealing ring is downwards provided with a first limiting convex tooth (221), and the outer wall of the sealing ring is downwards provided with a second limiting convex tooth (222); the connecting ring (23) is positioned between the first limiting convex tooth (221) and the second limiting convex tooth (222), the outer wall of the upper end part of the connecting ring is clamped and fixed with the second limiting convex tooth (222), and the inner wall of the upper end part of the connecting ring is provided with a limiting sheet (231) protruding outwards; a limiting groove for fixing the plastic elastic ring (7) is formed between the limiting sheet (231) and the first limiting convex tooth (221) in a limiting mode.

7. The all-plastic emulsion pump according to claim 6, characterized in that: the lower end part of the connecting ring (23) extends into the bottle body (1), and an accommodating space for accommodating the pump body (3) is defined between the connecting ring and the inner wall of the bottle body (1); the pump body (3) is positioned in the accommodating space, and the upper end of the pump body is provided with a pump body fixing piece (32) which can be clamped between the limiting baffle ring (211) and the bottle body (1).

8. The all-plastic emulsion pump of claim 7, wherein: and a buffer gasket (8) is arranged at the clamping position of the pump body fixing piece (32) and the bottle body (1).

9. The all-plastic emulsion pump of claim 7, wherein: the pump body caulking groove (33) is formed in the inner wall of the pump body (3), and a protruding portion capable of being embedded into the pump body caulking groove (33) is formed in the outer wall of the connecting ring (23).

10. The all-plastic emulsion pump of claim 1, wherein: the side wall of the pump body (3) is provided with an air hole (34) communicated with the inside of the bottle body (1), and the bottom of the pump body (3) is connected with a liquid inlet pipe (9) extending to the bottom of the bottle body (1).