CN215400419U

CN215400419U - Piston type extrusion pump

Info

Publication number: CN215400419U
Application number: CN202120908229.0U
Authority: CN
Inventors: 黄剑蕾
Original assignee: Guangzhou Ligao Plastic Products Co ltd
Current assignee: Guangzhou Ligao Plastic Products Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-01-04
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a piston type extrusion pump, which comprises a pump body and a bottle body, wherein the bottle body is used for storing liquid forming foam, the pump body comprises an outer cover, a discharge assembly and a mixing cavity, the outer cover is hermetically connected with the bottle body, a discharge channel for discharging the foam is arranged in the outer cover, the mixing cavity is arranged in the discharge assembly, one end, close to the outer cover, of the discharge assembly is connected with the outer cover and communicated with the discharge channel, one end, far away from the outer cover, of the discharge assembly is provided with a liquid inlet channel, the liquid inlet channel extends into the liquid in the bottle body, the discharge assembly is provided with a liquid inlet channel and a gas inlet channel which are not communicated with each other, and the liquid inlet channel and the gas inlet channel are respectively communicated with the mixing cavity. Liquid and air are independent passageway before mixing in the bottle of extruder pump, do not influence each other, and liquid and air are faster after the gap compression, and mixing efficiency is higher, and liquid and air mix twice in addition, finally make the foam that the extruder pump extruded more even and continuous.

Description

Piston type extrusion pump

Technical Field

The utility model relates to the technical field of extrusion pumps, in particular to a piston type extrusion pump.

Background

In the prior art, a squeeze pump is a common device and is commonly used in the cosmetic field. The conventional extrusion pump has a valve, and steel balls are generally adopted in the valve, which is extremely environmentally-friendly for recycling the subsequent extrusion pump. In addition, the squeeze pump generates foam, generally because the air of the squeeze pump and the liquid of the squeeze pump are mixed to generate foam, but if the foam is required to be more delicate, the air and liquid mixing efficiency is required to be higher.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a piston type extrusion pump, which can solve the problems of recyclability and environmental protection of the extrusion pump and make the foam discharged from the extrusion pump more delicate.

The technical scheme of the utility model is as follows: a piston type squeeze pump includes a pump body and a bottle body for storing a liquid for forming foam,

the pump body comprises an outer cover, a discharge assembly and a mixing cavity, the outer cover is hermetically connected with the bottle body, a discharge channel for discharging the foam is arranged in the outer cover,

the mixing cavity is arranged in the discharge assembly, one end of the discharge assembly close to the outer cover is connected with the outer cover and communicated with the discharge channel, one end of the discharge assembly far away from the outer cover is provided with a liquid inlet channel, the liquid inlet channel extends into the liquid of the bottle body,

the discharging component is provided with a liquid inlet channel and a gas inlet channel which are not communicated with each other, the liquid inlet channel and the gas inlet channel are respectively communicated with the mixing cavity, the liquid inlet channel is used for discharging liquid in the bottle body into the mixing cavity, the gas inlet channel is used for discharging air in the bottle body into the mixing cavity, the mixing cavity is used for mixing the liquid and the gas in the mixing cavity to form the foam,

the discharge assembly is hermetically connected with the outer cover, a one-way air return channel is arranged between the discharge assembly and the outer cover, the discharge assembly is positioned in a space between the outer cover and the bottle body, the one-way air return channel is only allowed to be communicated and connected with the discharge channel when in a non-pressing state and is kept to be hermetically connected with the discharge channel when in a pressing state,

the pressing state refers to that external force presses the bottle body to reduce the inner space of the bottle body, and the non-pressing state refers to that external force stops pressing the bottle body to restore the inner space of the bottle body.

Furthermore, the discharge assembly comprises a piston seat and a cylinder, the mixing cavity is arranged on the piston seat, one end of the piston seat is connected with the outer cover, the cylinder is sleeved at the other end of the piston seat, a gap between the upper inner surface of the cylinder and the outer surface of the piston seat forms an air inlet channel, and a gap between the lower inner surface of the cylinder and the outer surface of the piston seat forms an liquid inlet channel.

The piston is connected with the second air return hole of the piston seat, and the first air return hole, the second air return hole and the piston are communicated to form a one-way air return channel;

the piston is used for opening and closing the second air return hole so that the one-way air return channel is only allowed to be communicated with the discharge channel in a non-pressing state and is kept to be connected with the discharge channel in a sealing mode in a pressing state.

Further, the piston is detachably connected with the second air return hole of the piston seat.

Further, the piston includes piston connecting piece and piston piece, and the piston piece passes through the bar structure and is connected with the piston connecting piece, and the piston connecting piece is connected with second return air hole, and the piston piece leads to the bar structure and can be close to and keep away from the protrusion towards second return air hole for the piston connecting piece, and when the piston piece was close to the protrusion towards second return air hole, the second return air hole was plugged up to the piston piece, and when the protrusion was kept away from towards second return air hole to the piston piece, the piston piece kept the interval with second return air hole.

Furthermore, the pump body also comprises a press head, the lower end of the press head is connected with the upper end of the outer cover, a gap exists between the press head and the outer cover, and the gap between the press head and the outer cover is communicated with the one-way air return channel.

Furthermore, the press head is internally provided with a glue position, the glue position forms interference fit with the discharge channel when in a closed state, the glue position keeps an interval with the discharge channel when in an open state, the closed state refers to the state that external force acts on the press head to enable the glue position on the press head to move close to the discharge channel, and the open state refers to the state that the external force acts on the press head to enable the glue position on the press head to move away from the discharge channel.

Furthermore, the outer side of the upper end of the outer cover is provided with a bulge, the inner side of the lower end of the press head is provided with a bulge, and the bulge of the outer cover and the bulge of the press head are in staggered fit.

Further, the pump body still includes a section of thick bamboo that rubs, rubs a section of thick bamboo including rubbing the net, rubs the net and is fine and close network structure, rubs the one end and the enclosing cover of a section of thick bamboo and connects, and the other end is connected with the discharge assembly, rubs a section of thick bamboo and nets, hybrid chamber and discharge passage communicate in proper order.

Furthermore, the pump body still includes the straw, and the straw is hollow cylinder, and the one end of straw is pegged graft in a section of thick bamboo, and the other end of straw inserts the liquid in the bottle.

The utility model has the beneficial effects that: 1. the extrusion pump is a full plastic extrusion pump, so that the environmental protection and the recoverability are realized. 2. Liquid and air are independent passageway before mixing in the bottle of extruder pump, do not influence each other, and liquid and air are faster after the gap compression, and mixing efficiency is higher, and liquid and air mix twice in addition, finally make the foam that the extruder pump extruded more even and continuous. 3. The piston is an independent part, is easy to disassemble and replace when damaged, and does not need to replace the whole pump body.

Drawings

Fig. 1 is a schematic view of the overall structure of the closed state of the present invention.

FIG. 2 is a schematic view of the pump body in the closed state according to the present invention.

Fig. 3 is a top view of the piston of the present invention.

Fig. 4 is a schematic perspective view of the piston according to the present invention.

Fig. 5 is a schematic view of the pump body structure in the use state of the pump body according to the present invention.

Fig. 6 is a schematic diagram of the pump body structure in the air return state of the pump body according to the present invention.

In the figure, 1, press head; 2. an outer cover; 21. a first air return hole; 3. a rubbing cylinder; 31. rubbing the net; 4. a piston; 41. a piston plate; 42. a piston connector; 43. a bar structure 5, a piston seat; 51. a second air return hole; 52. a mixing chamber; 6. a cartridge; 7. a bottle body; 8. a straw.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and the detailed description below:

fig. 1 is a schematic view showing the overall structure of a piston type squeeze pump when locked. The extrusion pump includes the pump body and bottle 7, and the pump body is including pressing head 1, enclosing

cover

2, 3, pistons 4, piston seat 5, a section of thick bamboo 6, straw 8, and all parts of extrusion pump are plastic parts, can realize 100% recoverability and feature of environmental protection.

The enclosing cover 2 is provided with an internal thread, the bottle mouth of the bottle body 7 is provided with an external thread matched with the internal thread, and the enclosing cover 2 and the bottle mouth of the bottle body 7 are connected in a thread sealing way through the external thread and the internal thread. The bottle body 7 is made of soft materials, and after the bottle body 7 is pressed, the bottle body 7 can deform, so that the internal space of the bottle body 7 is reduced; after the bottle body 7 is released, the bottle body 7 is restored to its original shape, and the internal space of the bottle body 7 is restored to its original shape before being pressed. The bottle body 7 can be used to contain liquids such as hand wash, body wash, and the like.

The outer side of the upper end of the outer cover 2 is provided with an upper layer of bulges and a lower layer of bulges, and the inner side of the lower end of the press head 1 is also provided with an upper layer of bulges and a lower layer of bulges which are matched with the bulges on the outer side of the upper end of the outer cover 2. The lower end of the press head 1 is connected with the upper end of the outer cover 2 through the convex dislocation matching. The protrusion for the dislocation matching between the outer cap 2 and the button 1 may be a multi-layer protrusion. The outer cover 2 also comprises a vertically arranged passage for the passage of foam.

The plunger 1 includes a channel for extruding foam out of the extruder pump.

A circle of glue positions for sealing the channel of the outer cover 2 are arranged on the inner side of the press head 1 corresponding to the upper end position of the outer cover 2.

When the upper layer of the press head 1 protrudes below the upper layer of the outer cover 2, and the lower layer of the press head 1 protrudes below the lower layer of the outer cover 2, the glue potential of the press head 1 and the channel opening of the outer cover 2 form interference fit, the channel of the press head 1 for extruding foam out of the extrusion pump is blocked to be communicated with the channel of the outer cover 2, and the press head is closed at the moment, so that foam is prevented from being extruded out of the press head 1 when the bottle body 7 is pressed by mistake in the closed state;

when the upper layer of the press head 1 protrudes above the upper layer of the outer cover 2, the lower layer of the press head 1 protrudes above the lower layer of the outer cover 2, the glue position of the press head 1 is far away from the opening of the channel of the outer cover 2, the press head 1 is used for communicating the channel of the foam extrusion pump with the channel of the outer cover 2, and is in an open state, and the bottle body 7 can extrude foam from the press head 1 by extrusion in the open state.

The upper end of the piston seat 5 is inserted in the center of the outer cover 2.

The upper portion of the outer cover 2 is provided with at least one first air return hole 21, the right portion of the piston seat 5 is provided with a second air return hole 51, the first air return hole 21 and the second air return hole 51 are communicated to form an air return channel, and external air outside the bottle body 7 enters the bottle body 7 through the air return channel to balance the internal air pressure and the external air pressure of the bottle body 7.

A piston 4 is fixedly connected below the second air return hole 51, and the piston 4 is a one-way piston. The external air of the bottle body 7 passing through the first and second air-returning

holes

21 and 51 above the piston 4 can be introduced into the bottle body 7 through the piston 4.

Because the piston 4 is a one-way piston, air in the bottle 7 at the lower part of the piston 4 can not enter the external air through the piston 4. The piston seat 5 has at least one mixing chamber 52 at a lower portion thereof, and the mixing chamber 52 is used to mix air and liquid pressed from the inside of the bottle body 7 into the mixing chamber 52 so that the air and the liquid form foam.

As shown in fig. 3 and 4, fig. 3 is a plan view of the piston 4, and fig. 4 is a perspective view of the piston 4. The piston 4 comprises a piston sheet 41 and a piston connecting piece 42, the upper end of the piston connecting piece 42 is connected to the lower end of the second air return hole, the piston connecting piece 42 is a hollow cylindrical part, the piston sheet 41 is a circular thin sheet arranged in the center of the piston connecting piece 42, the piston sheet 41 and the piston connecting piece 42 are connected through a long and thin bent strip-shaped structure 43, and the strip-shaped structure 43 is made of plastic materials. Referring to fig. 2, the piston plate 41 is disposed in the piston connecting member 42 near the second air return hole 51, and since the bar-shaped structure 43 connecting the piston connecting member 42 and the piston plate 41 is made of plastic material, and the bar-shaped structure 43 has elasticity, the piston plate 41 can extend and retract up and down relative to the piston connecting member 42 when the piston connecting member 42 is fixed, which means that the piston plate 41 can protrude out of the upper and lower sides of the piston connecting member 42. The strip-shaped structure of the piston piece 41 can be close to and away from the second air-return hole relative to the piston connecting piece 42, when the piston piece 41 is close to and stretches towards the second air-return hole, the piston piece 41 blocks the second air-return hole, and when the piston piece 41 is far away from and stretches towards the second air-return hole, the piston piece 41 and the second air-return hole keep a gap, so that the second air-return hole 51 can be blocked and opened by the piston piece 41. The piston 4 of the utility model replaces the extrusion pump of steel ball or glass ball piston which is often adopted in the prior art, the extrusion pump adopting the steel ball or glass ball piston can be used smoothly only depending on the gravity of the steel ball or glass ball when in use, namely the extrusion pump is in an inverted or transverse state, otherwise, the steel ball or glass ball piston is easy to lose efficacy. Because the piston 4 of the present invention is made of a plastic material, which may be polyethylene or polypropylene, the piston 4 of the present invention can achieve recyclability and environmental protection. In addition, because the piston 4 is a single component inserted below the second air return hole 51, the pump head can be continuously used only by pulling down the damaged piston 4 and replacing the piston 4 with a new one under the condition that the piston 4 is damaged, and the whole pump head does not need to be replaced.

The cylinder 6 is connected below the piston seat 5, the cylinder 6 is sleeved at the lower end of the piston seat 5, a gap is formed between the cylinder 6 and the piston seat 5, the gap is communicated with the mixing cavity 52, two channels which are not communicated with each other and lead to the mixing cavity 52 from the inside of the bottle body 7 are formed in the gap, and the two channels which are not communicated with each other are an air inlet channel and a liquid inlet channel respectively. The intake passage is a passage formed by a gap between the upper inner surface of the cylinder 6 and the outer surface of the piston holder 5, and the intake passage is a passage formed by a gap between the lower inner surface of the cylinder 6 and the outer surface of the piston holder 5.

The lower end of the barrel 6 is inserted with a straw 8, the upper end of the straw 8 is positioned in the barrel 6, the lower end of the straw 8 is inserted below the liquid level in the bottle body 7, and the straw 8 is of a hollow tubular structure.

The middle part of the piston seat 5 is provided with the friction cylinder 3, the friction net 31 is arranged in the friction cylinder 3, the friction net 31 is a compact net structure, and the friction net 31 is used for enabling the foam passing through the friction net 31 to be more compact and continuous.

Fig. 5 is a schematic structural view of the squeeze pump during squeezing, i.e., a schematic structural view of the squeeze pump in a pressed state. At this time, the button 1 is pulled upward relative to the outer cap 2, the button 1 is in an open state, and the passage of the button 1 and the passage of the outer cap 2 are communicated. At this time, the bottle body 7 is pressed, and the foam can be extruded out from the channel of the press head 1, and the specific principle is as follows:

as for the movement of the liquid in the bottle body 7, as shown by the liquid inlet arrow in FIG. 5, when the bottle body 7 is pressed to deform, the liquid in the bottle body 7 is sucked up from the suction pipe 8, and the liquid reaches the mixing chamber 52 through the liquid inlet channel.

As for the movement of air in the bottle body 7, as shown by the air intake arrows in fig. 5, after the bottle body 7 is pressed, the air intake passage in the bottle body 7 reaches the mixing chamber 52. In addition, since the air in the bottle body 7 pushes the piston plate 41 upward when the bottle body 7 is pressed, the piston plate 41 closes the second air-returning hole 51, and thus the air in the bottle body 7 cannot exit from the second air-returning hole 51.

The air and the liquid reaching the mixing cavity 52 are mixed for the first time, the air and the liquid passing through the air inlet channel and the liquid passing through the liquid inlet channel reach the mixing cavity 52 at high liquid speed and high gas speed, foam is formed after the air and the liquid are collided and mixed in the mixing cavity 52, and the foam reaches the area below the friction net 31 through the mixing cavity 52.

In the area below the rubbing cylinder 3, because the lower part of the piston seat 5 is provided with at least one mixing cavity 52, foams from different mixing cavities 52 can be mixed for the second time below the rubbing net 31, the air and liquid after the second mixing are changed into denser continuous foams through the rubbing net 31, and the foams are extruded from the pressing head 1 after passing through the channel of the outer cover 2, so that a complete foam extrusion process is realized.

Fig. 6 is a schematic structural view of the hands released after squeezing the foam, i.e., the hands in a non-pressed state. After the hand is released, the bottle body 7 is restored due to the material of the bottle body 7, at this time, the air pressure in the bottle body 7 is smaller than the air pressure outside the bottle, the air outside the bottle can be as shown by the air return arrow in fig. 6, the external air enters from the gap between the outer cover 2 and the protrusion of the press head 1, after the air passes through the first air return hole 21 of the outer cover 2 and the second air return hole 51 of the piston seat 5, the piston sheet 41 of the piston 4 opens the piston 4 due to the downward pushing force of the air, the air enters into the bottle body 7, the air pressure of the air in the bottle body 7 and the air pressure of the external air are balanced, and the purpose of air return of the bottle body 7 is achieved.

In summary, the utility model provides a piston type extrusion pump, which is an all-plastic extrusion pump, and realizes environmental protection and recyclability. In addition, the channels that are not communicated with each other before liquid and air mix in the bottle 7 of extrusion pump do not influence each other, and liquid and air are faster after the gap compression, and mixing efficiency is higher, and liquid and air mix twice, finally make the foam that the extrusion pump extruded more even and continuous. The piston 4 is a separate part that can be removably replaced and can also be easily replaced when damaged.

Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. A piston extrusion pump characterized by: comprises a pump body and a bottle body, the bottle body is used for storing liquid forming foam,

the exhaust component is connected with the outer cover in a sealing way, a one-way air return channel is arranged between the exhaust component and the outer cover, the exhaust component is positioned in a space between the outer cover and the bottle body, the one-way air return channel is only allowed to be communicated with the inside of the bottle body when in a non-pressing state and is connected with the inside of the bottle body in a sealing way when in a pressing state,

2. The piston-type displacement pump of claim 1, wherein: the discharge assembly comprises a piston seat and a cylinder, the mixing cavity is arranged on the piston seat, one end of the piston seat is connected with the outer cover, the cylinder is sleeved at the other end of the piston seat, a gap between the upper inner surface of the cylinder and the outer surface of the piston seat forms an air inlet channel, and a gap between the lower inner surface of the cylinder and the outer surface of the piston seat forms an liquid inlet channel.

3. The piston-type displacement pump of claim 2, wherein: the piston is connected with the second air return hole of the piston seat, and the first air return hole, the second air return hole and the piston are communicated to form a one-way air return channel;

the piston is used for opening and closing the second air return hole so that the one-way air return channel only allows the one-way air return channel to be kept in communicated connection with the inside of the bottle body in a non-pressing state and keep in sealed connection with the inside of the bottle body in a pressing state.

4. The piston-type displacement pump of claim 3, wherein: the piston is detachably connected with the second air return hole of the piston seat.

5. The piston-type displacement pump of claim 3, wherein: the piston includes piston connecting piece and piston piece, and the piston piece passes through the bar structure and is connected with the piston connecting piece, and the piston connecting piece is connected with second return air hole, and the piston piece leads to the bar structure and can be close to and keep away from the protrusion towards second return air hole for the piston connecting piece, and when the piston piece was close to the protrusion towards second return air hole, the second return air hole was plugged up to the piston piece, and when the protrusion was kept away from towards second return air hole to the piston piece, the piston piece kept the interval with second return air hole.

6. The piston-type displacement pump of claim 1, wherein: the pump body still includes the button, and the lower extreme of button is connected with the upper end of enclosing cover, has the gap between button and the enclosing cover, and the gap between button and the enclosing cover communicates with one-way return-air passageway.

7. The piston-type displacement pump of claim 4, wherein: the button is internally provided with a glue position, the glue position forms interference fit with the discharge channel when in a closed state, and keeps an interval with the discharge channel when in an open state, the closed state refers to that external force acts on the button to enable the glue position on the button to move close to the discharge channel, and the open state refers to that external force acts on the button to enable the glue position on the button to move away from the discharge channel.

8. The piston-type displacement pump of claim 5, wherein: the outer side of the upper end of the outer cover is provided with a bulge, the inner side of the lower end of the press head is provided with a bulge, and the bulge of the outer cover and the bulge of the press head are in staggered fit.

9. The piston-type displacement pump of claim 1, wherein: the pump body still includes a section of thick bamboo that rubs, rubs a section of thick bamboo including rubbing the net, rubs the net and is fine and close network structure, rubs the one end and the enclosing cover of a section of thick bamboo and connects, and the other end is connected with the discharge assembly, and the hybrid chamber, the net and the discharge passage that rub of a section of thick bamboo communicate in proper order.

10. The piston-type displacement pump of claim 1, wherein: the pump body also comprises a suction pipe which is a hollow cylinder, one end of the suction pipe is inserted into the cylinder, and the other end of the suction pipe is inserted into the liquid in the bottle body.