CN113233000B - Emulsion pump capable of adjusting ejection quantity - Google Patents
Emulsion pump capable of adjusting ejection quantity Download PDFInfo
- Publication number
- CN113233000B CN113233000B CN202110622297.5A CN202110622297A CN113233000B CN 113233000 B CN113233000 B CN 113233000B CN 202110622297 A CN202110622297 A CN 202110622297A CN 113233000 B CN113233000 B CN 113233000B
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- Prior art keywords
- wall
- fixed
- sleeve
- emulsion
- pressure head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1043—Sealing or attachment arrangements between pump and container
Abstract
The invention discloses an emulsion pump capable of adjusting ejection quantity, which comprises a threaded cover, wherein a fixed port is formed in the outer wall of the top of the threaded cover, a sleeve is fixed on the inner wall of the fixed port, the inner wall of the sleeve is connected with a first guide pipe in a sliding mode, the inner wall of the first guide pipe is connected with a liquid inlet pipe in a rotating mode, a pressure head is arranged on the outer wall of the top of the liquid inlet pipe, a through hole is formed in the pressure head, the through hole and the liquid inlet pipe are located on the same plane, a liquid outlet is formed in one side of the outer wall of the bottom of the pressure head, the liquid outlet is communicated with the through hole, a negative pressure pipe is fixed on the inner wall of the top of the threaded cover, and a lantern ring is fixed on the outer wall of one side of the negative pressure pipe. The invention can prevent the waste of emulsion caused by more emulsion sprayed out because the pressure head is rapidly reduced due to larger pressing force, can adjust the emulsion discharge amount, can effectively improve the sealing property of the emulsion pump, and can prevent dust from entering the container to pollute the emulsion.
Description
Technical Field
The invention relates to the technical field of emulsion pumps, in particular to an emulsion pump capable of adjusting ejection quantity.
Background
Emulsion pumps are widely used in household products such as hand lotions, body washes and the like to pump the product out of a container such as a bottle for use. Most of the currently marketed lotion pumps are provided with a metal spring which enables the lotion pump to be reset for the next use after the user has pressed the lotion pump to pump a certain amount of product from the container for use.
When emulsion is conveyed through the emulsion pump, the amount of the ejected emulsion cannot be adjusted, so that the amount of the ejected emulsion is often large due to the large pressing force, and the waste of the emulsion is caused, and therefore the emulsion pump with the adjustable ejection amount is urgently needed to solve the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an emulsion pump capable of adjusting the spraying amount.
In order to achieve the purpose, the invention adopts the following technical scheme:
an emulsion pump capable of adjusting ejection quantity comprises a threaded cover, wherein a fixed port is formed in the outer wall of the top of the threaded cover, a sleeve is fixed on the inner wall of the fixed port, a first guide pipe is connected to the inner wall of the sleeve in a sliding manner, a liquid inlet pipe is connected to the inner wall of the first guide pipe in a rotating manner, a pressure head is arranged on the outer wall of the top of the liquid inlet pipe, a through hole is formed in the pressure head, the through hole and the liquid inlet pipe are located on the same plane, a liquid outlet is formed in one side of the outer wall of the bottom of the pressure head, the liquid outlet is communicated with the through hole, a negative pressure pipe is fixed on the inner wall of the top of the threaded cover, a sleeve ring is fixed on the outer wall of one side of the negative pressure pipe, a second guide pipe is sleeved on the outer wall of one side of the sleeve ring, sleeves are fixed on two sides of the outer wall of the top of the threaded cover, pull rods are connected with pull rods in a sliding manner, and a fixing ring is fixed between the outer walls of the tops of the two pull rods, and solid fixed ring's top outer wall is provided with lever mechanism, lever mechanism comprises support frame and balance plate, and forms between support frame and the balance plate to rotate and be connected, fixed connection between support frame and the solid fixed ring, the shape of balance plate is the Y type, and the equal fixedly connected with second magnet in both sides of balance plate top outer wall, the first magnet of both sides fixedly connected with of pressure head bottom outer wall, and mutual repulsion between first magnet and the second magnet, one side fixedly connected with ejector pin of pressure head top outer wall.
Preferably, a guide plate is fixed on the inner wall of the negative pressure pipe at a position close to the bottom, the size of the guide plate is smaller than that of the negative pressure pipe, and the guide plate is conical.
Preferably, the top outer wall of the guide plate is connected with a spring through a bolt, one end of the spring is positioned inside the sleeve, and the size of the spring is larger than that of the first guide pipe.
Preferably, the inner wall of the lantern ring is fixed with a limiting ring, and the inner wall of the limiting ring is provided with a one-way valve.
Preferably, a filter screen is fixed on the inner wall of the negative pressure pipe and is positioned between the one-way valve and the guide plate.
Preferably, the adjusting opening is formed in the outer wall of one side of the pressure head, one end of the adjusting opening penetrates through one side of the through hole, the inner wall of the adjusting opening is rotatably connected with a filter plate, a plurality of filter holes are formed in the outer wall of the filter plate, and the filter holes are different in size.
Preferably, the outer wall of the top of the threaded cap is fixed with a fixing sleeve, the outer wall of the top of the fixing sleeve is provided with a restraining port, and the inner wall of the restraining port is provided with a plurality of limiting grooves.
Preferably, the outer wall of the sleeve is sleeved with a sealing sleeve, the outer wall of the sealing sleeve is provided with a plurality of sealing blocks, and the sealing blocks are matched with the limiting grooves.
The invention has the beneficial effects that:
1. through the arranged sleeve, the pull rod, the limit bolt, the fixing ring, the lever mechanism, the support frame, the balance plate, the ejector rod, the first magnet and the second magnet, when the emulsion pump is used, firstly, the distance between the sleeve and the pull rod is adjusted through the limit bolt, so that the height of the fixing ring is limited, when the ejector head is pressed, the ejector head can move downwards, at the moment, the ejector rod can be in contact with the balance plate, so that the ejector rod acts on the balance plate when the ejector head moves, one side of the balance plate is inclined, further, the distance between the first magnet and the second magnet is gradually close, as the first magnet and the second magnet are mutually repelled, the repulsion force between the first magnet and the second magnet is increased along with the gradual close of the distance between the first magnet and the second magnet, so that the resistance for pressing the ejector head is increased, therefore, the pressure head can be prevented from being pressed down quickly due to the fact that the pressure head is large in pressing force, the spraying amount of the emulsion is large, the spraying amount of the emulsion can be effectively adjusted through the inclination of the balance plate and the repulsive force between the first magnet and the second magnet, when the pressure head is loosened after pressing is finished, the pressure head can move up quickly under the action of the repulsive force, and waste caused by emulsion seepage due to long-term pressing can be prevented;
2. through the filter plate and the filter holes, when the pressure head is pressed, emulsion can be conveyed to the interior of the pressure head along with the operation of the emulsion pump, and because a plurality of filter holes with different sizes are distributed on the filter plate, the emulsion can be discharged from the filter holes with different sizes through adjusting the sizes of the filter holes, so that the discharge amount of the emulsion can be adjusted, and the waste of the emulsion caused by more discharge amount of the emulsion is prevented;
3. through the fixed cover, the seal cover, sealed piece and the spacing groove that set up, when carrying the inside emulsion of container through the emulsion pump, probably because the leakproofness of emulsion pump is relatively poor and lead to the emulsion to leak, through the cooperation between seal cover and the fixed cover and the cooperation between sealed piece and the spacing groove, can effectual improvement emulsion pump's leakproofness to can prevent that the emulsion from leaking and causing the waste to the emulsion, can prevent simultaneously that the dust from entering into the inside of container and causing the pollution to the emulsion.
Drawings
FIG. 1 is a schematic structural diagram of an adjustable discharge emulsion pump according to the present invention;
FIG. 2 is a schematic cross-sectional view of an emulsion pump with adjustable discharge capacity according to the present invention;
FIG. 3 is a schematic structural view of a sealing mechanism of an adjustable discharge emulsion pump according to the present invention;
FIG. 4 is a schematic diagram of a filter plate structure of an emulsion pump with adjustable discharge capacity according to the present invention;
FIG. 5 is a schematic view of a partial structure of an adjustable discharge emulsion pump according to the present invention;
FIG. 6 is a schematic view of the overall structure of an adjustable discharge emulsion pump according to the present invention;
FIG. 7 is a schematic diagram of a lever mechanism of an emulsion pump with adjustable discharge according to the present invention.
In the drawings: 1-a screw cap; 2-fixing a sleeve; 3-a sleeve; 4, a drawing rod; 5-fixing the ring; 6-a balance plate; 7-pressure head; 8-a liquid discharge port; 9-a first magnet; 10-a liquid inlet pipe; 11-a first conduit; 12-a top rod; 13-a support frame; 14-a sleeve; 15-a negative pressure tube; 16-a collar; 17-a second conduit; 18-a stop collar; 19-a one-way valve; 20-filtering with a filter screen; 21-a guide plate; 22-a spring; 23-a through hole; 24-a filter plate; 25-sealing sleeve; 26-a sealing block; 27-a limiting groove; 28-filtration pore.
Detailed Description
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by one of ordinary skill in the art as appropriate.
Referring to fig. 1-7, an emulsion pump capable of adjusting the spraying amount comprises a threaded cap 1, a fixed port is formed in the outer wall of the top of the threaded cap 1, a sleeve 14 is fixed on the inner wall of the fixed port, a first guide pipe 11 is slidably connected to the inner wall of the sleeve 14, a liquid inlet pipe 10 is rotatably connected to the inner wall of the first guide pipe 11, a pressure head 7 is arranged on the outer wall of the top of the liquid inlet pipe 10, a through hole 23 is formed in the pressure head 7, the through hole 23 and the liquid inlet pipe 10 are located on the same plane, a liquid outlet 8 is formed in one side of the outer wall of the bottom of the pressure head 7, the liquid outlet 8 is communicated with the through hole 23, a negative pressure pipe 15 is fixed on the inner wall of the top of the threaded cap 1, a lantern ring 16 is fixed on the outer wall of one side of the negative pressure pipe 15, a second guide pipe 17 is sleeved on the outer wall of one side of the lantern ring 16, sleeves 3 are fixed on both sides of the outer wall of the top of the threaded cap 1, and pull rods 4 are slidably connected to the inner walls of the two sleeves 3, a fixing ring 5 is fixed between the outer walls of the tops of the two pull rods 4, a lever mechanism is arranged on the outer wall of the top of the fixing ring 5, the lever mechanism is composed of a support frame 13 and a balance plate 6, the support frame 13 is rotatably connected with the balance plate 6, the support frame 13 is fixedly connected with the fixing ring 5, the balance plate 6 is Y-shaped, two sides of the outer wall of the top of the balance plate 6 are respectively connected with a second magnet through bolts, two sides of the outer wall of the bottom of the pressure head 7 are connected with a first magnet 9 through bolts, the first magnet 9 and the second magnet are mutually exclusive, one side of the outer wall of the top of the pressure head 7 is connected with a top rod 12 through bolts, when the emulsion pump is used, the distance between the sleeve 3 and the pull rods 4 is firstly adjusted through a limit bolt 18, so as to limit the height of the fixing ring 5, when the pressure head 7 is pressed, the pressure head 7 can move downwards, the push rod 12 contacts with the balance plate 6, so that the push rod 12 acts on the balance plate 6 when the pressure head 7 moves, one side of the balance plate 6 inclines, the distance between the first magnet 9 and the second magnet gradually approaches, the first magnet 9 and the second magnet repel each other, the repulsion force between the first magnet 9 and the second magnet is increased along with the gradual approach of the distance between the first magnet 9 and the second magnet, and the resistance force for pressing down the pressure head 7 is increased, therefore, the pressure head 7 can be prevented from being pressed down rapidly due to the great pressing force of the pressure head 7, and the ejection amount of the emulsion is increased, so that the ejection amount of the emulsion can be effectively adjusted through the inclination of the balance plate 6 and the repulsion force between the first magnet 9 and the second magnet, when the pressure head 7 is released after pressing is finished, the pressure head 7 can be moved up rapidly due to the repulsion force, thereby preventing the emulsion from oozing out and causing waste due to long-term pressing.
In the present invention, a guide plate 21 is welded to a portion of the inner wall of the negative pressure tube 15 near the bottom, and the guide plate 21 has a size smaller than that of the negative pressure tube 15, and the guide plate 21 has a tapered shape.
In the present invention, the top outer wall of the guide plate 21 is connected with a spring 22 through a bolt, and one end of the spring 22 is located inside the sleeve 14, and the size of the spring 22 is larger than that of the first guide tube 11.
In the present invention, a retainer ring 18 is welded to the inner wall of the collar 16, and a check valve 19 is provided on the inner wall of the retainer ring 18.
In the invention, a filter screen 20 is welded on the inner wall of the negative pressure pipe 15, and the filter screen 20 is positioned between the one-way valve 19 and the guide plate 21.
According to the invention, the outer wall of one side of the pressure head 7 is provided with the adjusting port, one end of the adjusting port penetrates through one side of the through hole 23, the inner wall of the adjusting port is rotatably connected with the filter plate 24, the outer wall of the filter plate 24 is provided with the plurality of filter holes 28, the sizes of the filter holes 28 are different, when the pressure head 7 is pressed, emulsion can be conveyed to the inside of the pressure head 7 along with the operation of the emulsion pump, and the filter holes 28 with different sizes are distributed on the filter plate 24, so that the emulsion can be discharged from the filter holes 28 with different sizes through the size adjustment of the filter holes 28, and the discharge amount of the emulsion can be adjusted.
In the invention, the outer wall of the top of the threaded cover 1 is welded with the fixed sleeve 2, the outer wall of the top of the fixed sleeve 2 is provided with a restraining port, and the inner wall of the restraining port is provided with a plurality of limiting grooves 27.
In the invention, the sealing sleeve 25 is sleeved on the outer wall of the sleeve 14, the plurality of sealing blocks 26 are arranged on the outer wall of the sealing sleeve 25, the sealing blocks 26 are matched with the limiting grooves 27, and the sealing performance of the emulsion pump can be effectively improved through the matching between the sealing sleeve 25 and the fixing sleeve 2 and the matching between the sealing blocks 26 and the limiting grooves 27, so that the emulsion can be prevented from being wasted due to emulsion leakage, and meanwhile, the emulsion can be prevented from being polluted due to dust entering the inside of the container.
The working principle is as follows: during the use, fix the emulsion pump on the container through the thread cover 1, when needing to use the emulsion, through pressing pressure head 7 and make the inside emulsion of container pass through second pipe 17, negative pressure pipe 15 and feed liquor pipe 10 and carry to the inside of through-hole 23, and discharge emulsion through leakage fluid dram 8, when using the emulsion pump, at first adjust the distance between sleeve 3 and pull pole 4 through spacing bolt 18, thereby highly injecing solid fixed ring 5, when pressing pressure head 7, pressure head 7 can move down, at this moment, ejector pin 12 can contact with between balance plate 6, thereby ejector pin 12 acts on balance plate 6 during the removal through pressure head 7, thereby make one side of balance plate 6 slope, and then make the distance between first magnet 9 and the second magnet approach gradually, because mutual repulsion between first magnet 9 and the second magnet, therefore, can make between first magnet 9 and the second magnet along with the gradual approach of distance between first magnet 9 and the second magnet between 9 and the second magnet can make the first magnet 9 and the second magnet between the magnet The repulsion force is increased, so that the resistance force for pressing the pressure head 7 is increased, therefore, the pressure head 7 can be prevented from being pressed down rapidly due to the fact that the pressing force of the pressure head 7 is large, the ejection quantity of the emulsion can be effectively adjusted through the inclination of the balance plate 6 and the repulsion force between the first magnet 9 and the second magnet, when the pressure head 7 is released after the pressing is finished, the pressure head 7 can move up rapidly under the action of the repulsion force, the waste caused by the emulsion seepage due to long-term pressing can be prevented, when the pressure head 7 is pressed, the emulsion can be conveyed to the inside of the pressure head 7 along with the work of the emulsion pump, because a plurality of filter holes 28 with different sizes are distributed on the filter plate 24, the emulsion can be discharged from the filter holes 28 with different sizes through the adjustment of the sizes of the filter holes 28, and the discharge quantity of the emulsion can be adjusted, prevent because the more waste to the emulsion of emulsion exhaust volume, through the cooperation between seal cover 25 and the fixed cover 2 and the cooperation between sealed piece 26 and the spacing groove 27, can effectual improvement emulsion pump's leakproofness to can prevent that the emulsion from leaking and causing the waste to the emulsion, can prevent simultaneously that the inside that the dust enters into the container from causing the pollution to the emulsion.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The emulsion pump capable of adjusting the ejection quantity comprises a threaded cover (1), wherein a fixed port is formed in the outer wall of the top of the threaded cover (1), a sleeve (14) is fixed on the inner wall of the fixed port, a first guide pipe (11) is slidably connected to the inner wall of the sleeve (14), a liquid inlet pipe (10) is rotatably connected to the inner wall of the first guide pipe (11), a pressure head (7) is arranged on the outer wall of the top of the liquid inlet pipe (10), a through hole (23) is formed in the pressure head (7), the through hole (23) and the liquid inlet pipe (10) are located on the same plane, a liquid outlet (8) is formed in one side of the outer wall of the bottom of the pressure head (7), the liquid outlet (8) is communicated with the through hole (23), a negative pressure pipe (15) is fixed on the inner wall of the top of the threaded cover (1), a sleeve ring (16) is fixed on the outer wall of one side of the negative pressure pipe (15), a second guide pipe (17) is sleeved on the outer wall of the sleeve ring (16), it is characterized in that two sides of the outer wall of the top of the threaded cover (1) are both fixed with sleeves (3), the inner walls of the two sleeves (3) are both connected with a drawing rod (4) in a sliding way, a fixing ring (5) is fixed between the outer walls of the tops of the two drawing rods (4), and the outer wall of the top of the fixed ring (5) is provided with a lever mechanism which consists of a support frame (13) and a balance plate (6), the support frame (13) is rotationally connected with the balance plate (6), the support frame (13) is fixedly connected with the fixed ring (5), the balance plate (6) is Y-shaped, and both sides of the top outer wall of the balance plate (6) are fixedly connected with second magnets, both sides of the bottom outer wall of the pressure head (7) are fixedly connected with first magnets (9), the first magnet (9) and the second magnet repel each other, and one side of the outer wall of the top of the pressure head (7) is fixedly connected with a push rod (12);
the outer wall of one side of the pressure head (7) is provided with an adjusting opening, one end of the adjusting opening penetrates through one side of the through hole (23), the inner wall of the adjusting opening is rotatably connected with a filter plate (24), the outer wall of the filter plate (24) is provided with a plurality of filter holes (28), and the filter holes (28) are different in size;
the outer wall of the top of the threaded cover (1) is fixedly provided with a fixed sleeve (2), the outer wall of the top of the fixed sleeve (2) is provided with a restraint opening, and the inner wall of the restraint opening is provided with a plurality of limiting grooves (27);
the outer wall of the sleeve (14) is sleeved with a sealing sleeve (25), the outer wall of the sealing sleeve (25) is provided with a plurality of sealing blocks (26), and the sealing blocks (26) are matched with the limiting grooves (27).
2. A lotion pump with adjustable spraying amount according to claim 1, wherein a guide plate (21) is fixed on the inner wall of the negative pressure tube (15) near the bottom, and the size of the guide plate (21) is smaller than that of the negative pressure tube (15), and the guide plate (21) is conical.
3. An adjustable lotion pump according to claim 2, wherein the top outer wall of the guide plate (21) is fixedly connected with a spring (22), and one end of the spring (22) is located inside the sleeve (14), and the size of the spring (22) is larger than that of the first conduit (11).
4. An emulsion pump with adjustable ejection rate according to claim 1, wherein a limit ring (18) is fixed on the inner wall of the collar (16), and a check valve (19) is arranged on the inner wall of the limit ring (18).
5. An adjustable lotion pump as claimed in claim 1, wherein a strainer (20) is fixed to the inner wall of the negative pressure pipe (15), and the strainer (20) is located between the check valve (19) and the guide plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110622297.5A CN113233000B (en) | 2021-06-04 | 2021-06-04 | Emulsion pump capable of adjusting ejection quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110622297.5A CN113233000B (en) | 2021-06-04 | 2021-06-04 | Emulsion pump capable of adjusting ejection quantity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113233000A CN113233000A (en) | 2021-08-10 |
| CN113233000B true CN113233000B (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110622297.5A Active CN113233000B (en) | 2021-06-04 | 2021-06-04 | Emulsion pump capable of adjusting ejection quantity |
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| CN (1) | CN113233000B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538454A1 (en) * | 1985-11-04 | 1987-04-30 | Sunbeam Plastics Corp | ADJUSTABLE DISPENSER LOCK |
| CN202481501U (en) * | 2012-03-01 | 2012-10-10 | 叶如康 | Push type cleaning solution bottle |
| KR101183079B1 (en) * | 2012-03-27 | 2012-09-20 | 김용준 | Pump safety device of various courage |
| EP3000533A1 (en) * | 2014-09-25 | 2016-03-30 | Albea Thomaston Inc. | Pump for dispensing a product contained in a bottle |
| CN107350107A (en) * | 2017-09-12 | 2017-11-17 | 盐城市隆祥机械制造厂 | A kind of portable fluid paint spray coater |
| CN108057537A (en) * | 2018-01-02 | 2018-05-22 | 杨智杰 | A kind of atomizer head |
| CN211130810U (en) * | 2019-10-23 | 2020-07-31 | 泰兴开广塑胶有限公司 | Liquid outlet aperture adjustable press pump |
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2021
- 2021-06-04 CN CN202110622297.5A patent/CN113233000B/en active Active
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| CN113233000A (en) | 2021-08-10 |
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