CN220610896U - Pump core of spray pump - Google Patents
Pump core of spray pump Download PDFInfo
- Publication number
- CN220610896U CN220610896U CN202322061037.2U CN202322061037U CN220610896U CN 220610896 U CN220610896 U CN 220610896U CN 202322061037 U CN202322061037 U CN 202322061037U CN 220610896 U CN220610896 U CN 220610896U
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- liquid
- pump
- piston
- cavity
- sealing
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- 239000007921 spray Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 182
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000000670 limiting effect Effects 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
The utility model discloses a pump core of a spray pump, which comprises a pump shell and a piston part movably arranged in the pump shell; the piston part is provided with a cylindrical part which divides the interior of the pump shell into a pump liquid cavity in the cylinder and a liquid return cavity outside the cylinder, a sealing slideway is arranged in the pump shell, and a liquid return channel is formed between the cylindrical part and the sealing slideway; the piston of the piston part in the pump shell can enable the liquid pumping cavity to pump in or pump out liquid, the liquid in the liquid pumping cavity can be pumped into the liquid return cavity through the liquid return channel, and the liquid return cavity is provided with a liquid outlet for discharging the return liquid; the cylindrical part is provided with a sealing ring which is in sliding sealing fit with the sealing slideway so as to seal the liquid return channel; one end of the sealing slideway is provided with a groove part, and the piston action of the piston piece can drive the sealing ring to move to the groove part so as to open the liquid return channel. The utility model can make the fluid without pressure and speed in the pump core flow back, and avoid the spray pump from spraying water drops or waterline.
Description
Technical Field
The utility model relates to the technical field of spray pumps, in particular to a pump core of a spray pump.
Background
The spray pump is one of important products in the daily chemical packaging industry, and is widely applied to various fields of water supplementing, moisture preserving, make-up fixing, mosquito and insect preventing, alcohol disinfection and the like. The pump core is a core component in a spray pump, and the main work of the pump core is to suck the liquid in the bottle into the pump core through a suction pipe, and then to endow the liquid with certain pressure and speed so as to spray the liquid.
However, the spraying pump core commonly used in the market at present is limited by the structure, when entering the tail section of the working stroke, the flow rate of the sprayed fluid can be reduced, and the high-speed fluid is atomized, so that the sprayed water drops or waterline do not form uniform fine mist any more in the latter half of the working process of the whole spraying pump, and the product use experience of consumers is affected.
In the application document of CN107651299a, which is a pump head structure of a high-efficiency atomizer (shown in fig. 1) and the application document of CN205966248U, which is a cosmetic atomizing spray head (shown in fig. 2), a mode of arranging a protruding part (40) in a pump core is adopted to limit a piston (1), so that when the pump core enters a tail section of a working stroke, the protruding part can stop the piston from continuously moving downwards, and liquid without pressure and flow rate in the pump can not be extruded, thereby avoiding the spray pump from spraying water drops or waterlines in the tail section of the working stroke. However, the stroke of the piston member is shortened due to the limiting action of the protruding portion, and the feedback sense of a consumer when pressing the spray pump is weakened to a certain extent.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the pump core of the spray pump, so that fluid without pressure and speed in the pump core flows back, and the spray pump is prevented from spraying water drops or waterlines.
The technical scheme is as follows: in order to achieve the above object, a pump core of a spray pump of the present utility model includes a pump housing and a piston member movably disposed in the pump housing; the piston part is provided with a cylindrical part which divides the interior of the pump shell into a pump liquid cavity in the cylinder and a liquid return cavity outside the cylinder, a sealing slideway is arranged in the pump shell, and a liquid return channel is formed between the cylindrical part and the sealing slideway; the piston of the piston part in the pump shell can enable the liquid pumping cavity to pump in or pump out liquid, the liquid in the liquid pumping cavity can be pumped into the liquid return cavity through the liquid return channel, and the liquid return cavity is provided with a liquid outlet for discharging the return liquid; the cylindrical part is provided with a sealing ring which is in sliding sealing fit with the sealing slideway so as to seal the liquid return channel; one end of the sealing slideway is provided with a groove part, and the piston action of the piston piece can drive the sealing ring to move to the groove part so as to open the liquid return channel.
Further, the liquid cavity of the pump is provided with a liquid suction port and a liquid spray port, the liquid suction port is provided with a one-way liquid inlet structure, and the liquid spray port is provided with a one-way liquid outlet structure.
Further, the unidirectional liquid inlet structure comprises a ball valve and an elastic piece, and the elastic action of the elastic piece plugs the ball valve on the liquid suction port so as to seal the liquid suction port; the piston movement of the piston member generates negative pressure at the liquid suction port, and the ball valve is separated from the liquid suction port after overcoming the elastic action of the elastic member by the negative pressure so as to open the liquid suction port.
Further, the piston member is elastically connected with the ball valve through the elastic member, and one end of the piston member is propped against the liquid spraying port under the action of the elastic member so as to seal the liquid spraying port; the piston movement of the piston member can generate positive pressure, and the piston member is separated from the liquid spraying port under the positive pressure effect so as to open the liquid spraying port.
Further, the elastic piece is a telescopic spring, a limiting inserted bar and a hollowed-out supporting block are arranged in the cylindrical portion, the telescopic spring is sleeved on the limiting inserted bar, and one end of the telescopic spring is in butt joint with the hollowed-out supporting block.
Further, a pressing cover is movably connected to the pump shell, the piston part is in limit connection with the pressing cover through a clamping piece, and the pressing cover drives the piston part to perform piston movement when being pressed; the liquid spraying opening is correspondingly arranged on the pressing cover.
Further, the buckle piece with press the lid fixed connection, there is spacing portion on the piston piece, spacing portion is spacing between buckle piece and press the lid, prevents that the piston piece from breaking away from the press lid.
Further, the buckling piece extends to be inserted into the liquid return cavity, and when the pressing cover is pressed, the buckling piece performs piston movement in the liquid return cavity.
The beneficial effects are that: according to the pump core of the spray pump, the liquid return cavity is arranged in the pump core, when the pump core enters the tail section of the working stroke, fluid without pressure and speed in the pump core can flow back into the bottle body through the liquid return cavity, so that the spray pump cannot spray water drops or water lines at the tail section of the working stroke, waste of products can be avoided, and the product use experience of consumers can be improved.
Drawings
FIG. 1 is a schematic diagram of a pump core in the prior art;
FIG. 2 is a schematic diagram of a pump core in the prior art;
FIG. 3 is a schematic diagram of the pump core structure of the present utility model;
FIG. 4 is a schematic view of the seal ring displaced into the groove portion;
fig. 5 is a schematic diagram of the cooperation of the snap fastener and the pressing cover.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
A pump core for a spray pump as described in the accompanying figures 1 to 5, the pump core comprising a pump housing 2 and a piston member 1 movably arranged within the pump housing 2. The piston part 1 is provided with a cylindrical part 3, the interior of the pump shell 2 is divided into a pump liquid cavity 4 in the cylinder and a liquid return cavity 5 outside the cylinder by the cylindrical part 3, the piston part 1 can perform piston movement in the pump shell 2, and the piston movement of the piston part 1 in the pump shell 2 can enable the pump liquid cavity 4 to pump in or pump out liquid, and high-speed fluid pumped from the pump liquid cavity 4 can form spray.
The pump shell 2 is also provided with a liquid return cavity 5, a liquid return channel 7 which can be opened and closed is arranged between the liquid return cavity 5 and the pump liquid cavity 4, liquid in the pump liquid cavity 4 can be pumped into the liquid return cavity 5 through the liquid return channel 7, and a liquid outlet 18 for discharging return liquid is also arranged on the liquid return cavity 5. When the pump cartridge of the present utility model is used in a container bottle, the pump cartridge can drain back the reflux liquid into the bottle through the drain port 18.
The piston action of the piston member 1 is associated with the opening and closing of the liquid return channel 7, so that liquid in the liquid pump cavity 4 can be pumped into the liquid return cavity 5 through the liquid return channel 7. In the process that the piston piece 1 acts as a piston capable of enabling the pump core to pump liquid, the liquid return channel 7 is changed from a closed state to an open state, so that when the pump core enters the tail section of a working stroke, the liquid return channel 7 is opened, liquid in the pump liquid cavity 4 enters the liquid return cavity 5 through the liquid return channel 7, and the phenomenon that fluid without pressure and speed is sprayed out in the form of water drops or water lines is avoided, so that the use experience of a user is improved.
The piston part 1 is provided with a cylindrical part 3, a space is reserved between the cylindrical part 3 and the inner wall of the pump shell 2, the cylindrical part 3 separates the inside of the pump shell 2, the pump liquid cavity 4 is arranged in the cylindrical part 3, and the liquid return cavity 5 is arranged between the cylindrical part 3 and the pump shell 2.
As shown in fig. 3, the pump casing 2 has a seal slide 6, and a gap is formed between the cylindrical portion 3 and the seal slide 6, and the gap is a liquid return channel 7. The cylindrical part 3 is provided with a sealing ring 8, and the cylindrical part 3 is in sliding sealing fit with the sealing slideway 6 through the sealing ring 8 so as to seal the liquid return channel 7, and the pump liquid cavity 4 and the liquid return cavity 5 are isolated from each other. One end of the sealing slideway 6 is provided with a groove part 9, the piston action of the piston element 1 can drive the sealing ring 8 to move to the groove part 9 so as to open the liquid return channel 7, and after the liquid return channel 7 is opened, liquid in the liquid pump cavity 4 can be pumped into the liquid return cavity 5 through the liquid return channel 7. Under the cooperation of the sealing slideway 6, the groove part 9, the cylindrical part 3 and the sealing ring 8, the piston action of the piston member 1 can control the opening and closing of the liquid return channel 7.
The liquid sucking port 10 and the liquid spraying port 11 are arranged on the liquid pumping cavity 4, and when the pump core is applied to a container bottle, a suction pipe is arranged at the liquid sucking port 10, so that the liquid pumping cavity 4 can suck liquid in the container bottle through the liquid sucking port 10 and the suction pipe. The liquid suction port 10 is provided with a one-way liquid inlet structure, and the liquid spray port 11 is provided with a one-way liquid outlet structure, so that the pump core sucks liquid from the container bottle and then sprays the liquid.
The unidirectional liquid inlet structure comprises a ball valve 12 and an elastic piece 13, and the elastic action of the elastic piece 13 plugs the ball valve 12 on the liquid suction port 10 to seal the liquid suction port 10. The piston movement of the piston member 1 generates a negative pressure at the liquid suction port 10, and the negative pressure causes the ball valve 12 to disengage from the liquid suction port 10 against the elastic action of the elastic member 13 to open the liquid suction port 10.
The piston member 1 is elastically connected with the ball valve 12 through the elastic member 13, and one end of the piston member 1 is propped against the liquid spraying opening 11 under the action of the elastic member 13 so as to seal the liquid spraying opening 11. The piston movement of the piston member 1 generates positive pressure, and the piston member 1 is separated from the liquid ejection port 11 by the positive pressure to open the liquid ejection port 11.
The elastic piece 13 is a telescopic spring, a limiting inserted rod 14 and a hollowed-out supporting block 15 are arranged in the cylindrical portion 3, the telescopic spring is sleeved on the limiting inserted rod 14, one end of the telescopic spring is abutted against the hollowed-out supporting block 15, and the other end of the telescopic spring is abutted against the ball valve 12. The hollow supporting block 15 divides the pump liquid cavity 4 into an upper side sealing area and a lower side sealing area, and the hollow supporting block 15 is provided with small holes so that the upper side sealing area and the lower side sealing area are communicated.
The pump shell 2 is movably connected with a pressing cover 16, the piston part 1 is in limit connection with the pressing cover 16 through a clamping piece 17, the clamping piece 17 is also a secondary piston, and the pressing cover 16 drives the piston part 1 to perform piston movement when being pressed. The liquid spraying ports 11 are correspondingly arranged on the pressing cover 16.
The fastening piece 17 is fixedly connected with the pressing cover 16 through a fastening structure, and the piston piece 1 is provided with a limiting part, as shown in fig. 3, an annular part at the upper end of the piston piece 1 is the limiting part, and the limiting part is limited between the fastening piece 17 and the pressing cover 16 to prevent the piston piece 1 from being separated from the pressing cover 16.
The fastening piece 17 extends to be inserted into the liquid return cavity 5, and when the pressing cover 16 is pressed, the fastening piece 17 performs piston movement in the liquid return cavity 5 so as to press out liquid in the liquid return cavity 5 from the liquid outlet 18.
The working process of the utility model is as follows: pressing down the pressing cover 16, the piston member 1 and the buckle member 17 simultaneously move downwards under the action of the pressing cover 16, the volume of the pump liquid cavity 4 becomes smaller in the process of downward movement of the piston member 1, gas in the pump liquid cavity 4 is compressed to generate positive pressure, as shown in fig. 3, since the structure of the piston member 1 is designed that the upper side sealing position area is larger than the lower side sealing position area, the downward acting force formed by the positive pressure of the pump liquid cavity 4 on the piston member 1 is larger than the upward acting force, and the piston member 1 moves downwards; after the piston member 1 moves downwards, a certain gap is formed between the piston member and the liquid spraying port 11 on the pressing cover 16, and the gas in the liquid pumping cavity 4 is discharged from the gap;
then the pressing cover 16 is loosened, and the piston member 1, the buckling member 17 and the pressing cover 16 move upwards under the action of the spring; meanwhile, the volume of the pump liquid cavity 4 is increased, negative pressure is generated in the pump liquid cavity 4, the ball valve 12 moves upwards under the action of the negative pressure, a certain gap is generated between the ball valve and the liquid suction port 10 at the lower end of the pump shell 2, and liquid can enter the pump liquid cavity 4 through the gap under the action of the negative pressure;
pressing down the pressing cover 16 again, and simultaneously moving the piston member 1 and the buckle member 17 downwards under the action of the pressing cover 16, wherein in the process of moving the piston member 1 downwards, the volume of the pump liquid cavity 4 is reduced, liquid in the pump liquid cavity 4 is compressed to generate positive pressure, and the fluid enters an upper sealing area of the piston member 1 through a small hole of the hollowed-out supporting block 15 in the piston member 1; as in the initial venting principle, since the piston member 1 is structurally designed such that the upper sealing area is larger than the lower sealing area, the positive pressure of the pumping chamber 4 applies a downward force to the piston member 1 that is larger than the upward force, and the piston member 1 moves downward to form a certain gap with the pressing cover 16; after the gap between the piston part 1 and the pressing cover 16 is opened, liquid is sprayed out from the gap, when the piston part 1 is pressed down to the tail section, as one end of the sealing slideway 6 of the pump shell 2 is provided with a groove part 9, and the inner diameter of the groove part 9 is larger than the outer diameter of the sealing surface of the piston part 1, at the moment, no sealing effect exists between the piston part 1 and the inner wall of the pump shell 2, the liquid return channel 7 is opened, and the liquid flows upwards from the gap between the piston part 1 and the sealing slideway 6;
when the liquid return channel 7 enters the liquid return cavity 5, the clamping piece 17 and the inner wall of the pump shell 2 are also in a sealing state, so that when the pump core enters the tail section of the working stroke, liquid which does not have high speed and high pressure is discharged into the container bottle through the liquid discharge port 18 on the pump shell 2 under the action of the clamping piece 17, thereby realizing liquid recovery, and the spray pump can not spray water drops or waterline at the tail section of the working stroke, thereby avoiding waste of products and improving the product use experience of consumers.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (8)
1. A pump core of a spray pump, characterized in that: comprises a pump shell (2) and a piston part (1) movably arranged in the pump shell (2); the piston part (1) is provided with a cylindrical part (3), and the interior of the pump shell (2) is divided into a pump liquid cavity (4) in the cylinder and a liquid return cavity (5) outside the cylinder by the cylindrical part (3);
a sealing slideway (6) is arranged in the pump shell (2), and a liquid return channel (7) is formed between the cylindrical part (3) and the sealing slideway (6); the piston of the piston part (1) in the pump shell (2) can enable the liquid pumping cavity (4) to pump in or pump out liquid, the liquid in the liquid pumping cavity (4) can be pumped into the liquid return cavity (5) through the liquid return channel (7), and a liquid outlet (18) for discharging the return liquid is arranged on the liquid return cavity (5);
a sealing ring (8) is arranged on the cylindrical part (3), and the sealing ring (8) is in sliding sealing fit with the sealing slideway (6) so as to seal the liquid return channel (7); one end of the sealing slideway (6) is provided with a groove part (9), and the piston action of the piston piece (1) can drive the sealing ring (8) to move to the groove part (9) so as to open the liquid return channel (7).
2. A pump core for a spray pump according to claim 1, wherein: the liquid pump is characterized in that the liquid pumping cavity (4) is provided with a liquid suction port (10) and a liquid spraying port (11), the liquid suction port (10) is provided with a one-way liquid inlet structure, and the liquid spraying port (11) is provided with a one-way liquid outlet structure.
3. A pump core for a spray pump according to claim 2, characterized in that: the unidirectional liquid inlet structure comprises a ball valve (12) and an elastic piece (13), wherein the ball valve (12) is blocked on the liquid suction port (10) under the elastic action of the elastic piece (13) so as to seal the liquid suction port (10); the piston movement of the piston member (1) generates negative pressure at the liquid suction port (10), and the ball valve (12) is separated from the liquid suction port (10) after overcoming the elastic action of the elastic member (13) so as to open the liquid suction port (10).
4. A pump core for a spray pump according to claim 3, characterized in that: the piston member (1) is elastically connected with the ball valve (12) through the elastic member (13), and one end of the piston member (1) is propped against the liquid spraying opening (11) under the action of the elastic member (13) so as to seal the liquid spraying opening (11); the piston movement of the piston member (1) can generate positive pressure, and the piston member (1) is separated from the liquid spraying port (11) under the action of the positive pressure so as to open the liquid spraying port (11).
5. A pump core for a spray pump as claimed in claim 4, wherein: the elastic piece (13) is a telescopic spring, a limiting inserted rod (14) and a hollowed-out supporting block (15) are arranged in the cylindrical portion (3), the telescopic spring is sleeved on the limiting inserted rod (14), and one end of the telescopic spring is in butt joint with the hollowed-out supporting block (15).
6. A pump core for a spray pump as claimed in claim 4, wherein: the pump shell (2) is movably connected with a pressing cover (16), the piston part (1) is in limit connection with the pressing cover (16) through a clamping piece (17), and the pressing cover (16) drives the piston part (1) to do piston movement when being pressed; the liquid spraying opening (11) is correspondingly arranged on the pressing cover (16).
7. A pump core for a spray pump as claimed in claim 6, wherein: the clamping piece (17) is fixedly connected with the pressing cover (16), the piston piece (1) is provided with a limiting part, and the limiting part is limited between the clamping piece (17) and the pressing cover (16) to prevent the piston piece (1) from being separated from the pressing cover (16).
8. A pump core for a spray pump as claimed in claim 7, wherein: the clamping piece (17) extends to be inserted into the liquid return cavity (5), and when the pressing cover (16) is pressed, the clamping piece (17) performs piston movement in the liquid return cavity (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322061037.2U CN220610896U (en) | 2023-08-02 | 2023-08-02 | Pump core of spray pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322061037.2U CN220610896U (en) | 2023-08-02 | 2023-08-02 | Pump core of spray pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220610896U true CN220610896U (en) | 2024-03-19 |
Family
ID=90214127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322061037.2U Active CN220610896U (en) | 2023-08-02 | 2023-08-02 | Pump core of spray pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220610896U (en) |
-
2023
- 2023-08-02 CN CN202322061037.2U patent/CN220610896U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |