CN113525910B - Emulsion pump - Google Patents

Emulsion pump Download PDF

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Publication number
CN113525910B
CN113525910B CN202110811417.6A CN202110811417A CN113525910B CN 113525910 B CN113525910 B CN 113525910B CN 202110811417 A CN202110811417 A CN 202110811417A CN 113525910 B CN113525910 B CN 113525910B
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China
Prior art keywords
piston
cavity
pump body
medium
air pressure
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CN202110811417.6A
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Chinese (zh)
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CN113525910A (en
Inventor
袁群慧
李广兴
周玉
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Guangzhou Tailun Cosmetic Packaging Co ltd
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Guangzhou Tailun Cosmetic Packaging Co ltd
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Priority to CN202110811417.6A priority Critical patent/CN113525910B/en
Publication of CN113525910A publication Critical patent/CN113525910A/en
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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
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • B05B11/1001—Piston pumps
    • 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
    • B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke

Abstract

The invention discloses an emulsion pump, which comprises a pump body, a first piston, a second piston, a first one-way valve and a second one-way valve; the pump body is provided with a suction pipeline, an output pipeline, an air inlet and an air outlet; the first piston is positioned in the pump body and divides the interior of the pump body into a medium cavity and a pneumatic cavity; one end of the suction pipeline is communicated with the medium cavity, the other end of the suction pipeline extends into the container, one end of the output pipeline is communicated with the medium cavity, and the other end of the output pipeline extends out of the pump body; the first one-way valve enables the medium to flow into the medium cavity in one way through the suction pipeline; the second one-way valve enables the medium to flow into the output pipeline in one way; the air inlet communicates the air pressure cavity with the outside atmosphere, and the air outlet communicates with the inside of the container; the second piston is positioned in the air pressure cavity, an auxiliary air passage is arranged on the second piston, one end of the second piston is communicated with the air pressure cavity, and the other end of the second piston is selectively communicated with the air outlet; when the first piston moves relative to the pump body, the second piston moves relative to the pump body to communicate the auxiliary air passage with the air outlet. The emulsion pump of the invention can improve the protection of the medium in the container.

Description

Emulsion pump
Technical Field
The invention belongs to the technical field of emulsion pumps, and particularly relates to an emulsion pump.
Background
At present, an emulsion pump is arranged on a container filled with emulsion, so that people can conveniently obtain the emulsion by pressing a pressure head, the use of people is facilitated, raw materials are saved, and the container provided with the emulsion pump is widely applied to occasions such as household use, medical use and the like.
However, the following problems are often encountered with the emulsion pumps used in existing containers during use: when the emulsion pump is used, the air pressure in the bottle and the air pressure balance are required to be kept to work normally, so that a gap is reserved between the pressure head and the pump body, and an air circulation channel is reserved on the emulsion pump, so that sewage can enter a cavity formed by the pressure head and the pump body or enter the bottle from an air flow channel, and emulsion in the bottle is polluted. In addition, after the emulsion pump is used, emulsion residues exist in the pressure head and the nozzle, the emulsion can flow out from the nozzle to drop down to pollute the environment, and the residual emulsion at the nozzle head can cause the nozzle to be blocked after long-term air drying, so that the normal use of the emulsion pump is affected.
Disclosure of Invention
Aiming at the problems existing in the working process of the existing emulsion pump, the invention provides an emulsion pump. The emulsion pump comprises a pump body, a first piston, a second piston, a first one-way valve and a second one-way valve; the pump body is connected with the container and is provided with a suction pipeline, an output pipeline, an air inlet and an air outlet; the first piston is positioned in the pump body and divides the interior of the pump body into a medium cavity and a pneumatic cavity; one end of the suction pipeline is communicated with the medium cavity, the other end of the suction pipeline extends to the inside of the container, one end of the output pipeline is communicated with the medium cavity, and the other end of the output pipeline extends to the outside of the pump body; the first one-way valve is positioned between the suction pipeline and the medium cavity, so that the medium flows into the medium cavity in one way; the second one-way valve is positioned between the output pipeline and the medium cavity, so that the medium flows into the output pipeline in one way; the air inlet is used for communicating the air pressure cavity with the outside air pressure, and the air outlet is communicated with the inside of the container; the second piston is positioned in the air pressure cavity, an auxiliary air passage is arranged on the second piston, one end of the auxiliary air passage is communicated with the air pressure cavity, and the other end of the auxiliary air passage is selectively communicated with the air outlet; when the first piston moves relative to the pump body, the second piston moves relative to the pump body to communicate the auxiliary air passage with the air outlet.
Preferably, after the pump body is connected with the container, the position height of one end of the auxiliary air passage, which is communicated with the air pressure cavity, is higher than the position height of the air inlet, which is communicated with the outside air pressure.
Preferably, the second piston divides the air pressure cavity, a liquid discharge cavity is formed between the first piston and the second piston, and a first liquid discharge channel and a second liquid discharge channel are arranged on the first piston; one end of the first liquid draining channel is communicated with the air pressure cavity, the other end of the first liquid draining channel is communicated with the liquid draining cavity, and a third one-way valve is arranged on the first liquid draining channel, so that liquid flows into the liquid draining cavity from the air pressure cavity in one way; one end of the second liquid draining channel is communicated with the liquid draining cavity, the other end of the second liquid draining channel is communicated with the outside of the pump body, and a fourth one-way valve is arranged on the second liquid draining channel, so that liquid flows out of the pump body from the liquid draining cavity in one way.
Further preferably, the third check valve and/or the fourth check valve is composed of a steel ball and a spring.
Preferably, the emulsion pump is further provided with a third piston, a fifth one-way valve and a sixth one-way valve; the third piston is fixedly connected with the first piston and is positioned in the air pressure cavity, the second piston is positioned between the first piston and the third piston, the third piston divides the air pressure cavity, and a back suction cavity is formed between the third piston and the second piston; the fifth one-way valve is positioned between the back suction cavity and the output pipeline, so that the medium flows into the back suction cavity in one way through the output pipeline; the sixth one-way valve is positioned between the suck-back cavity and the output pipeline, so that the medium flows into the output pipeline from the suck-back cavity in one way.
Further preferably, when the first piston moves in a direction to reduce the volume of the medium chamber with respect to the pump body, the second piston moves in a direction to approach the third piston with respect to the pump body.
Further preferably, the fifth check valve and/or the sixth check valve is composed of a steel ball and a spring.
Preferably, the emulsion pump is also provided with a handle; the handle is positioned outside the pump body and is rotationally connected with the pump body; the first piston is rotationally connected with the handle through a first piston rod, the second piston is rotationally connected with the handle through a second piston rod, and the connection point of the first piston rod and the handle and the connection point of the second piston rod and the handle are positioned on two sides of the connection point of the handle and the pump body.
Further preferably, the emulsion pump is further provided with a piston elastic member; the piston elastic piece is positioned between the pump body and the first piston to drive the first piston to move relative to the pump body in a direction of increasing the volume of the medium cavity.
Preferably, the first one-way valve and/or the second one-way valve adopts a ball valve structure.
The emulsion pump provided by the invention has the following beneficial technical effects:
1. in the emulsion pump, the air inlet and the air outlet are arranged on the pump body, the auxiliary air passage is arranged on the second piston, one end of the auxiliary air passage is communicated with the air inlet through the air pressure cavity, and the other end of the auxiliary air passage is selectively communicated with the air outlet to be communicated with the interior of the container. Therefore, the air pressure cavity and the auxiliary air passage are arranged between the air inlet and the air outlet, and the auxiliary air passage and the air outlet are communicated when the second piston moves along with the first piston, so that the inside of the container is kept in a state communicated with the external atmospheric pressure, the normal output of the emulsion pump to the medium is ensured, and when the second piston moves along with the first piston to stop outputting the medium in the container, the auxiliary air passage is disconnected from the air outlet, thereby achieving the purpose of preventing external impurities from directly entering the container through the air inlet, and improving the protection of the medium in the container.
2. In the emulsion pump, the auxiliary air passage is arranged on the second piston rod, and the height position of one end, communicated with the air pressure cavity, of the auxiliary air passage is higher than the position of the air inlet on the pump body, so that external sewage entering the air pressure cavity through the air inlet can be effectively prevented from entering the auxiliary air passage, the protection of medium in a container is further achieved, and the safety and reliability of the emulsion pump are improved.
3. In the emulsion pump, the liquid discharge cavity is arranged between the first piston and the second piston, and the first liquid discharge flow passage, the second liquid discharge flow passage, the third one-way valve and the fourth one-way valve are arranged on the first piston rod, so that external sewage entering the air pressure cavity through the air inlet can be introduced into the liquid discharge cavity and then discharged to the outside of the pump body in the reciprocating movement process of the first piston and the second piston, the possibility that the external sewage enters the container through the air inlet is further reduced, and the protection of media in the container is improved.
4. In the emulsion pump, the third piston is arranged on the first piston rod, the back suction cavity is arranged between the third piston and the second piston, and the fifth one-way valve and the sixth one-way valve are arranged between the back suction cavity and the output pipeline, so that the medium remained in the output pipeline after the emulsion pump outputs the medium can be timely sucked back into the back suction cavity through the fifth one-way valve and then output to the output pipeline through the sixth one-way valve to be output together with the medium in the medium cavity, and the overflow and air-drying blockage of the medium in the output pipeline are effectively avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of an emulsion pump according to the present embodiment;
fig. 2 is a schematic structural view of the emulsion pump according to the present embodiment, wherein the first piston, the third piston and the first piston rod are disposed between each other;
fig. 3 is a schematic diagram of the structure between the second piston and the second piston rod in the emulsion pump of the present embodiment.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and the examples.
As shown in fig. 1 to 3, the emulsion pump of the present embodiment includes a pump body 1, a first piston 21, a second piston 22, a first check valve 31, and a second check valve 32. The pump body 1 is detachably and fixedly connected with the container through threads, and a suction pipeline 11, an output pipeline 12, an air inlet 13 and an air outlet 14 are arranged on the pump body 1. The first piston 21 is located inside the pump body 1 and is capable of reciprocating rectilinear movement with respect to the pump body 1, and divides the inside of the pump body 1 into a medium chamber 151 and a pneumatic chamber 152.
One end of the suction pipe 11 communicates with the medium chamber 151, and the other end extends to the inside of the container for introducing the medium in the container into the medium chamber 151. One end of the output pipe 12 is communicated with the medium cavity 151, and the other end extends out of the pump body 1 for outputting the medium in the medium cavity 151. The first check valve 31 is located between the suction pipe 11 and the medium chamber 151 to allow the medium in the container to flow into the medium chamber 151 in one direction. The second check valve 32 is located between the output pipe 12 and the medium chamber 151, and allows the medium in the medium chamber 151 to flow into the output pipe 12 in one direction. The air inlet 13 is located in the pump body 1 near the upper end to communicate the air pressure chamber 152 with the outside atmosphere, and the air outlet 14 is located in the pump body 1 near the opposite lower end to be in communication with the interior of the container.
The second piston 22 is located in the air pressure chamber 152 and is capable of reciprocating rectilinear movement with respect to the pump body 1, and an auxiliary air passage 221 is provided in the second piston 22. Wherein one end of the auxiliary air passage 221 is in communication with the air pressure chamber 152 and the other end extends to the outer circumferential surface of the second piston 22 and is in selective communication with the air outlet 14. When the first piston 21 reciprocates relative to the pump body 1, the second piston 22 moves relative to the pump body 1 to communicate the auxiliary air passage 221 with the air outlet 14.
When the first piston is driven to move in the pump body to the direction of increasing the volume of the medium cavity, the air pressure in the medium cavity is reduced due to the increase of the volume of the first piston, so that the first one-way valve is opened, the second one-way valve is closed, the medium in the container flows into the medium cavity through the suction pipeline, and meanwhile, the second piston moves to a position where the auxiliary air passage is communicated with the air outlet, so that the air pressure in the container is communicated with the external atmospheric pressure sequentially through the air outlet, the auxiliary air passage, the air pressure cavity and the air inlet, and the medium in the container can flow into the medium cavity quickly and smoothly; when the first piston is driven to move in the direction of reducing the volume of the medium cavity in the pump body, the air pressure in the medium cavity is increased due to the reduction of the volume of the first piston, so that the first one-way valve is closed and the second one-way valve is opened, and the medium in the medium cavity is output through the output pipeline 12 under the driving of the air pressure, so that the output operation of the medium in the container is completed.
As shown in fig. 1, in the emulsion pump of the present embodiment, a handle 4 is further provided, and the handle 4 is located outside the pump body 1 and is rotatably connected to the pump body 1 through a rotation shaft 41. Meanwhile, a first piston rod 51 is arranged on the first piston 21, one end of the first piston rod 51 is fixedly connected with the first piston 21, and the other end of the first piston rod 51 penetrates through the air pressure cavity 152 to extend out of the pump body 1 and is in rotary connection with the handle 4 through a pin shaft. The second piston 22 is provided with a second piston rod 52, one end of the second piston rod 52 is fixedly connected with the second piston 22, and the other end of the second piston rod 52 penetrates through the air pressure cavity 152 to extend out of the pump body 1 and is in rotary connection with the handle 4 through a pin shaft. Wherein the connection point of the first piston rod 51 and the handle 4 and the connection point of the second piston rod 52 and the handle 4 are located at two sides of the connection point of the handle 4 and the pump body 1.
At this time, the first piston rod and the second piston rod are simultaneously in rotational connection with the handle, and form a seesaw structural form driven by the handle, namely, when the driving end of the handle moves downwards along the direction shown in fig. 1, the handle drives the first piston rod to move downwards by taking the rotating shaft as a fulcrum, and meanwhile, the handle drives the second piston rod to move upwards, otherwise, when the handle drives the first piston rod to move upwards, the handle drives the second piston rod to move downwards simultaneously, so that synchronous movement control of the first piston and the second piston in the pump body is formed.
Also, in other embodiments, other driving mechanisms may be used to separately drive and control the first piston and the second piston according to different design and use conditions, and through the cooperative control of the driving mechanisms, the movement association control of the first piston and the second piston is achieved.
Further, in the emulsion pump of the present embodiment, a piston elastic member 6 is also provided. The piston elastic member 6 is a coil spring and is located in the medium chamber 151 between the pump body 1 and the first piston 21 to drive the first piston 21 to move relative to the pump body 1 in a direction to increase the volume of the medium chamber 151.
At this time, after the drive effort to the handle is relieved, the first piston just can remove for the pump body under the restoring force effect of piston elastic component, and the rethread first piston rod drives the handle and rotates, and then the rethread second piston rod drives the second piston and carries out synchronous movement to realize the automatic re-setting to handle and first piston and second piston position.
In addition, two connecting grooves 42 are provided on the handle 4 of the present embodiment for receiving a pin connected to the first piston rod 51 and a pin connected to the second piston rod 52, respectively, to perform reciprocating sliding. Therefore, the handle can smoothly drive the first piston rod and the second piston rod to reciprocate in the linear direction, the clamping in the driving process of the first piston rod and the second piston rod is avoided, and the working stability and the working reliability of the emulsion pump are improved.
Referring to fig. 1 and 3, for the design that the air inlet 13 is opened in the pump body 1 near the upper end, one end of the auxiliary air channel 221, which is communicated with the air pressure cavity 152, extends to the upper end of the second piston rod 52, so that the height of the position of the end, which is communicated with the air pressure cavity 152, of the auxiliary air channel 221 is higher than the height of the position, which is communicated with the air pressure of the air inlet 13, of the air pressure cavity 152, and meanwhile, the top of the second piston rod 52 is designed into a protective cover structure form so as to isolate and protect the auxiliary air channel 221.
Like this, in the course of the operation of this emulsion pump, even if there is external sewage to flow into the atmospheric pressure chamber through the air inlet, because the position of auxiliary air flue and atmospheric pressure chamber intercommunication is higher than the position of air inlet, external sewage can fall in the bottom position in atmospheric pressure chamber under the dead weight effect to keep away from auxiliary air flue, reached the risk that prevents external sewage and get into the container through the air inlet, improved the protection to the medium in the container.
In the present embodiment, as shown in fig. 1, the second piston 22 divides the air pressure chamber 152, a liquid discharge chamber 153 is formed between the first piston 21 and the second piston 22, and a first liquid discharge passage 511 and a second liquid discharge passage 512 are provided in the first piston rod 51. Wherein, one end of the first drain passage 511 is communicated with the air pressure chamber 152, the other end is communicated with the drain chamber 153, and the third one-way valve 33 is arranged on the first drain passage 511, so that the liquid flows into the drain chamber 153 from the air pressure chamber 152 in one way. One end of the second liquid discharge channel 512 is communicated with the liquid discharge cavity 153, the other end extends to be communicated with the outside of the pump body 1, and a fourth one-way valve 34 is arranged on the second liquid discharge channel 512, so that liquid flows out of the pump body 1 from the liquid discharge cavity 153 in one way.
At this time, when the first piston and the second piston relatively move to increase the volume of the liquid discharge cavity, the air pressure in the liquid discharge cavity is reduced, and the air pressure in the air pressure cavity drives the third one-way valve to be opened, so that the liquid remained in the air pressure cavity, such as the external sewage flowing in through the air inlet, flows into the liquid discharge cavity through the first liquid discharge channel; when the first piston and the second piston perform opposite relative movement to reduce the volume of the liquid discharge cavity, the air pressure in the liquid discharge cavity is increased, the third one-way valve is closed, and the fourth one-way valve is opened, so that the liquid in the liquid discharge cavity is discharged to the outside of the pump body through the second liquid discharge channel. Therefore, the external sewage flowing into the air pressure cavity through the air inlet can be discharged in time, and the protection of the medium in the container in the use process of the emulsion pump is further improved.
As shown in fig. 1, in the emulsion pump of the present embodiment, a third piston 23, a fifth check valve 35, and a sixth check valve 36 are further provided. Wherein the third piston 23 is positioned within the pneumatic chamber 152 and is secured over the first piston rod 51 in a parallel relationship with the first piston 21 so as to be in a fixedly connected relationship with the first piston 21. The second piston 22 is located between the first piston 21 and the third piston 23, the third piston 23 subdivides the air pressure chamber 152, and a suck-back chamber 154 is formed between the third piston 23 and the second piston 22. The fifth one-way valve 35 is located between the suction back chamber 154 and the output conduit 12 to allow one-way flow of medium from the output conduit 12 into the suction back chamber 154, and the sixth one-way valve 36 is also located between the suction back chamber 154 and the output conduit 12 to allow one-way flow of medium from the suction back chamber 154 into the output conduit 12.
At this time, when the first piston moves towards the direction of increasing the volume of the medium cavity, the second one-way valve is closed because of the reduction of the air pressure when the volume of the medium cavity increases, and simultaneously, the third piston moves synchronously with the first piston and forms backward movement with the second piston, so that the fifth one-way valve is opened because of the reduction of the air pressure when the volume of the suck-back cavity increases, thereby sucking the medium remained in the output pipeline back into the suck-back cavity, and avoiding the overflow and air drying blockage of the medium remained in the output pipeline. On the contrary, when the first piston moves towards the direction of reducing the volume of the medium cavity again to output the medium in the medium cavity through the output pipeline, the third piston moves synchronously with the first piston and moves relatively with the second piston, so that the volume of the back suction cavity is reduced, the air pressure is increased, the sixth one-way valve is opened, and the medium sucked back into the back suction cavity is output into the output pipeline and is further output together with the medium in the medium cavity.
In addition, in the embodiment, the first one-way valve adopts a ball valve structure formed by a single steel ball, so that when the emulsion pump is connected with the container, the first one-way valve can form a conventional blocking effect on the suction pipeline by utilizing self gravity, and when the air pressure in the medium cavity is reduced to the pressure in the container, the air pressure can push the first one-way valve to move, the medium can flow into the medium cavity through the suction pipeline, and the automatic opening and closing action of the first one-way valve along with the movement of the first piston is formed, so that the operation convenience of the emulsion pump is improved.
Meanwhile, in the embodiment, the second check valve, the third check valve, the fourth check valve, the fifth check valve and the sixth check valve all adopt ball valve structural forms formed by steel balls and springs, so that the corresponding check valves can be opened and closed by utilizing the air pressure change formed by the movement of the corresponding piston relative to the pump body and the acting force of the springs in the corresponding check valves, the convenience of control operation is achieved, and the check valves can be kept in a normally closed state by means of the springs, so that the reliability and the accuracy of actions are ensured.
Of course, in other embodiments, according to different design and use conditions, one-way valves with other structural forms, such as electromagnetic one-way valves, may be adopted, and each one-way valve is actively opened and closed by using a remote electric control manner, so as to achieve the effect of remote active control.
The specific procedure for operating the emulsion pump of this embodiment is as follows, as shown in connection with fig. 1 to 3:
after the emulsion pump and the container are fixedly mounted through threads, the first piston 21 moves in the direction of increasing the volume of the medium cavity 151 under the restoring force of the piston elastic member 6, the first piston 21 drives the handle 4 to rotate through the first piston rod 51, and the handle 4 drives the second piston 22 to move in the direction of approaching the medium cavity 151 through the second piston rod 52, so that the first piston 21 finally moves to a position in contact with the second piston 22, as shown in fig. 1, the handle 4 is in a natural balance state, and the auxiliary air channel 221 and the air outlet 14 are kept in a disconnected relation.
When the handle 4 is pressed, the handle 4 takes the rotating shaft 41 as a fulcrum, drives the first piston rod 51 to move downwards, drives the first piston 21 to overcome the acting force of the piston elastic piece 6 and move towards the direction of reducing the volume of the medium cavity 151, reduces the volume of the medium cavity 151, increases the air pressure, closes the first one-way valve 31, and opens the second one-way valve 32, so that the medium in the medium cavity 151 is output through the output pipeline 12.
In this process, on the one hand, the handle 4 further uses the rotating shaft 41 as a fulcrum to drive the second piston rod 52 to move upwards, and drives the second piston 22 to move in a direction away from the first piston 21, so that the auxiliary air channel 221 is communicated with the air outlet 14, and the inner cavity of the container is communicated with the outside atmosphere through the air outlet 14, the auxiliary air channel 221, the air pressure cavity 152 and the air inlet 13, so that the balance relationship between the air pressure in the container and the outside air pressure is maintained, on the other hand, the movement of the second piston 22 in the direction away from the first piston 21 increases the air pressure to decrease the volume of the liquid discharge cavity 153, and the air pressure in the air pressure cavity 152 maintains the atmospheric pressure, so that the third one-way valve 33 is opened, and the liquid in the air pressure cavity 152 flows into the liquid discharge cavity 153 through the first liquid discharge channel 511 and the third one-way valve 33. In yet another aspect, the third piston 23 moves synchronously downward with the first piston rod 51, so that the second piston 22 and the third piston 23 move relatively to reduce the volume of the suck-back chamber 154 and increase the air pressure, and the air pressure in the output pipe 12 is approximately equal to the external air pressure, so that the sixth check valve 36 is opened, and the medium in the suck-back chamber 154 flows into the output pipe 12 through the sixth check valve 36 and is further output together with the medium in the medium chamber 151.
When the handle 4 is pressed to the lowest point and the force to the handle 4 is released, the first piston 21 stops moving downward and starts moving upward under the restoring force of the piston elastic member 6, causing the volume of the medium chamber 151 to increase and the pressure to decrease, and the first check valve 31 opens when the air pressure in the first piston 21 moves to the medium chamber 151 decreases to the air pressure in the container, thereby causing the medium in the container to flow into the medium chamber 151 through the suction pipe 11 and the first check valve 31, so that the medium output is performed again from the medium chamber 151 through the output pipe 12.
In this process, before the first piston 21 moves to contact with the second piston 22 to make the handle 4 at the equilibrium position to stop moving, on one hand, the movement of the first piston 21 drives the handle 4 to rotate reversely through the first piston rod 51, and the handle 4 drives the second piston 22 to move towards the direction close to the first piston 21 through the second piston rod 52, so that the auxiliary air channel 221 keeps in communication with the air outlet 14, and the air pressure in the container is kept at the external atmospheric pressure, so that the medium in the container can smoothly enter the medium cavity 151. On the other hand, the displacement of the second piston 22 in the direction approaching the first piston 21 reduces the volume of the liquid discharge chamber 153 and increases the air pressure until the fourth check valve 34 is opened, and then the liquid in the liquid discharge chamber 153 can be discharged to the outside of the pump body 1 through the second liquid discharge passage 512 and the fourth check valve 34. On the other hand, the third piston 23 moves upward synchronously with the first piston rod 51, so that the second piston 22 and the third piston 23 move backward, the volume of the suck-back chamber 154 increases and the air pressure decreases, and the air pressure of the output pipe 12 is the external atmospheric pressure, so that the fifth check valve 35 is opened, the medium remaining in the output pipe 12 flows into the suck-back chamber 154 through the fifth check valve 35, and the suck-back process of the medium remaining in the output pipe 12 is completed.
In this embodiment, by opening one end of the auxiliary air channel 221, which is selectively communicated with the air outlet 14, on the outer circumferential surface of the second piston 22 and setting the end as an annular groove structure along the axial direction of the second piston 22, it is ensured that the communication relationship between the auxiliary air channel 221 and the air outlet 14 is always maintained in the process of reciprocating the second piston 22 with the handle 4 relative to the pump body 1, and then the air pressure in the container is maintained in a state opposite to the external atmospheric pressure, so as to ensure the normal output operation of the emulsion pump on the medium.

Claims (5)

1. An emulsion pump is characterized by comprising a pump body, a first piston, a second piston, a first one-way valve and a second one-way valve; the pump body is connected with the container and is provided with a suction pipeline, an output pipeline, an air inlet and an air outlet; the first piston is positioned in the pump body and divides the interior of the pump body into a medium cavity and a pneumatic cavity; one end of the suction pipeline is communicated with the medium cavity, the other end of the suction pipeline extends to the inside of the container, one end of the output pipeline is communicated with the medium cavity, and the other end of the output pipeline extends to the outside of the pump body; the first one-way valve is positioned between the suction pipeline and the medium cavity, so that the medium flows into the medium cavity in one way; the second one-way valve is positioned between the output pipeline and the medium cavity, so that the medium flows into the output pipeline in one way; the air inlet is used for communicating the air pressure cavity with the outside air pressure, and the air outlet is communicated with the inside of the container; the second piston is positioned in the air pressure cavity, an auxiliary air passage is arranged on the second piston, one end of the auxiliary air passage is communicated with the air pressure cavity, and the other end of the auxiliary air passage is selectively communicated with the air outlet; when the first piston moves relative to the pump body, the second piston moves relative to the pump body to communicate the auxiliary air channel with the air outlet;
the second piston divides the air pressure cavity, a liquid discharge cavity is formed between the first piston and the second piston, and a first liquid discharge channel and a second liquid discharge channel are arranged on the first piston; one end of the first liquid draining channel is communicated with the air pressure cavity, the other end of the first liquid draining channel is communicated with the liquid draining cavity, and a third one-way valve is arranged on the first liquid draining channel, so that liquid flows into the liquid draining cavity from the air pressure cavity in one way; one end of the second liquid draining channel is communicated with the liquid draining cavity, the other end of the second liquid draining channel is communicated with the outside of the pump body, and a fourth one-way valve is arranged on the second liquid draining channel, so that liquid flows out of the pump body from the liquid draining cavity in one way;
the emulsion pump is also provided with a third piston, a fifth one-way valve and a sixth one-way valve; the third piston is fixedly connected with the first piston and is positioned in the air pressure cavity, the second piston is positioned between the first piston and the third piston, the third piston divides the air pressure cavity, and a back suction cavity is formed between the third piston and the second piston; the fifth one-way valve is positioned between the back suction cavity and the output pipeline, so that the medium flows into the back suction cavity in one way through the output pipeline; the sixth one-way valve is positioned between the suck-back cavity and the output pipeline, so that the medium flows into the output pipeline from the suck-back cavity in one way; when the first piston moves relative to the pump body in the direction of reducing the volume of the medium cavity, the second piston moves relative to the pump body in the direction of approaching the third piston;
the emulsion pump is also provided with a handle; the handle is positioned outside the pump body and is rotationally connected with the pump body; the first piston is rotationally connected with the handle through a first piston rod, the second piston is rotationally connected with the handle through a second piston rod, and the connection point of the first piston rod and the handle and the connection point of the second piston rod and the handle are positioned on two sides of the connection point of the handle and the pump body; the emulsion pump is also provided with a piston elastic piece; the piston elastic piece is positioned between the pump body and the first piston to drive the first piston to move relative to the pump body in a direction of increasing the volume of the medium cavity.
2. The emulsion pump of claim 1, wherein the end of the auxiliary air passage that communicates with the air pressure chamber is positioned at a higher level than the air inlet that communicates with the ambient air pressure after the pump body is connected to the container.
3. The emulsion pump of claim 2, wherein the third check valve and/or the fourth check valve is comprised of a steel ball and a spring.
4. The emulsion pump of claim 3, wherein the fifth check valve and/or the sixth check valve is comprised of a steel ball and a spring.
5. The emulsion pump as recited in any of claims 1-4 wherein the first one-way valve and/or the second one-way valve are in the form of ball valve structures.
CN202110811417.6A 2021-07-19 2021-07-19 Emulsion pump Active CN113525910B (en)

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Application Number Priority Date Filing Date Title
CN202110811417.6A CN113525910B (en) 2021-07-19 2021-07-19 Emulsion pump

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2133259A5 (en) * 1971-04-08 1972-11-24 Step
DE10220557A1 (en) * 2002-05-02 2003-11-13 Pfeiffer Erich Gmbh & Co Kg Dispenser for the discharge of flowable media
US6644516B1 (en) * 2002-11-06 2003-11-11 Continental Afa Dispensing Company Foaming liquid dispenser
FR2893090A1 (en) * 2005-11-09 2007-05-11 Claude Jaunay FLUID PUMPING AND DISPENSING ASSEMBLY
CN103182351B (en) * 2011-12-27 2017-03-29 丁要武 Push type liquid pump
CN103623961A (en) * 2012-08-27 2014-03-12 王雅灿 Improved foam sprayer device
CN204453254U (en) * 2015-03-13 2015-07-08 广州蓝月亮实业有限公司 A kind of pump head structure
US11161127B2 (en) * 2018-03-29 2021-11-02 Op-Hygiene Ip Gmbh Two stage foam pump and method of producing foam

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