CN219216021U

CN219216021U - Full-plastic foam pump with sealing structure

Info

Publication number: CN219216021U
Application number: CN202320166793.9U
Authority: CN
Inventors: 黄剑蕾
Original assignee: Guangzhou Ligao Plastic Products Co ltd
Current assignee: Guangzhou Ligao Plastic Products Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-06-20
Anticipated expiration: 2033-02-06

Abstract

The utility model discloses a full-plastic foam pump with a sealing structure, which is characterized by comprising an upper end part component, a fine shooting, a pull rod, a friction cylinder, a spring, a friction seat, a piston seat, a valve and a suction pipe, wherein the upper end part component is respectively connected with the friction cylinder and the fine shooting, the spring is sleeved on the fine shooting and is used for driving the piston seat to move downwards by a certain distance in the fine shooting direction when the upper end part component is acted by external force, the piston seat is separated from sealing connection with the piston by a certain distance downwards, and the upper end part component is driven by the resilience force of the spring to move upwards by a certain distance in the fine shooting moving process after the external force is removed, so that the piston seat moves upwards by a certain distance in the piston direction until the piston seat is in sealing connection with the piston. The utility model can avoid the problems of poor rebound, poor fatigue resistance and failure caused by providing larger acting force.

Description

Full-plastic foam pump with sealing structure

Technical Field

The utility model relates to the technical field of pressing liquid foam pump bodies, in particular to a full-plastic foam pump with a sealing structure.

Background

In daily life articles such as bottled body washes and shampoos, foam pumps are used to hold liquids such as body washes and shampoos, and the liquids are squeezed out by pressing. Currently, foam pumps that achieve squeezing out of liquid by pressing down on the market typically comprise a spring, i.e. the foam pump has a spring built in, so that pressing down compresses the spring and then allows the spring to rebound. The foam pump is required to be vacuum sealed before the finished product is formed, and a large external force needs to be applied to the spring in the vacuum sealing test process so as to be capable of tensioning the fine-shooting and pull rod contact surface in the foam pump. If the spring is used as a metal spring, although the action of the metal spring by applying a large external force is not obvious, the operation is inconvenient, and the use of the metal spring is more expensive, and the metal spring can be corroded to pollute the liquid, thereby bringing hidden danger to users. For this reason, nonmetal springs (generally plastic springs) are used to replace metal springs in the market, and because the plastic springs are limited by their plastic characteristics, the plastic springs have poor rebound and poor fatigue resistance under the action of a large external force. Therefore, there is a need for a foam pump that is self-sealing independent of the spring action to avoid the problem of poor rebound and fatigue resistance caused by external forces acting on the plastic springs.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide an all-plastic foam pump with a sealing structure, which can solve the technical problems described in the background art.

The technical scheme for realizing the purpose of the utility model is as follows: a full-plastic foam pump with a sealing structure comprises an upper end component, a fine bat, a pull rod, a friction cylinder, a spring, a friction seat, a piston seat, a valve and a suction pipe, wherein the upper end component is respectively connected with the friction cylinder and the fine bat,

the spring is sleeved on the fine racket, the friction seat is arranged on the friction cylinder and positioned in the cavity of the friction cylinder, the friction seat is positioned at two sides of the spring, a valve for opening and closing air to pass through is arranged in the cavity at the lower end of the friction cylinder, the friction cylinder at the lower end of the valve is communicated with the suction pipe, the suction pipe is used for communicating and connecting external liquid,

the piston is sleeved on the piston seat, and the piston can slide up and down relative to the fine shooting and friction cylinder, so that the piston is in sealing connection or disconnection with the piston seat to form an open circuit between the piston and the piston seat,

the upper end component is used for driving the piston seat to move downwards for a certain distance in advance corresponding to the piston in the process of moving towards the fine shooting direction by the external force acting on the upper end component, the downwards for a certain distance is enough to enable the piston seat and the piston to be disconnected from each other by disconnecting the piston seat from the piston,

and after the external force is removed, the resilience force of the spring drives the upper end assembly to move away from the fine shooting, and the upper end assembly drives the piston to move upwards for a certain distance, so that the piston seat moves towards the piston until the piston seat and the piston are in sealing connection.

Further, upper end subassembly includes gland, enclosing cover and big claps, and the gland buckle is connected on the enclosing cover and is located the top of gland, and the gland can slide from top to bottom along the axial of enclosing cover, big claps in the inner chamber of enclosing cover and take a big clap and be connected with enclosing cover sealing contact, the inner chamber of enclosing cover includes the upper inner chamber and the lower inner chamber of intercommunication each other, and the upper end of taking a big clap extends to in the upper inner chamber of enclosing cover, and in the lower inner chamber of enclosing cover extended to down the lower inner chamber take a big clap terminal and also be located the interior intracavity of enclosing cover upper end swing joint, take a big clap terminal can slide from top to bottom in axial direction along the inside wall of taking a friction a barrel upper end, the top and the enclosing cover fixed connection of taking a friction barrel.

Further, the friction cylinder is connected with the inner upper wall of the outer cover through the gasket.

Further, the device also comprises a clamp which is clamped at the upper end of the outer cover and is used for resisting the external force to act on the gland so as to inhibit the gland from moving towards the direction close to the outer cover.

Further, still include the blade, the upper end of thin clapping is connected with the big clapping looks butt, sets up between thin clapping upper end and the big clapping be used for opening and close the air and pass through the blade, the lower extreme downwardly extending of thin clapping reaches the bottom of first cavity, and first cavity is the cavity that the thick stick is beaten greatly, thin clapping, rubs a section of thick bamboo, rubs seat and piston and enclose, the spring housing is established on thin clapping, and the upper end of spring is contradicted and is propped by thin clapping in the bulge of thin clapping upper end, and the lower extreme of spring is contradicted and is being makeeed by rubed the seat on rubs the seat to make the spring between the upper end of thin clapping and rubs the seat.

Further, the friction seat is fixedly arranged on the friction cylinder and positioned in the cavity of the friction cylinder, the friction seat is positioned at two sides of the spring, and the lower ends of the spring extend into the friction seats at two sides.

Further, the friction seat is mounted on the friction cylinder and is positioned in the cavity of the friction cylinder by being fixedly or in conflict with the inwardly protruding step of the friction cylinder.

Further, the piston seat includes piston seat mobile jib, inclined plane recess and piston seat base, and piston seat mobile jib and piston seat base fixed connection, and piston seat base horizontal fixed connection is in the lower extreme of piston seat mobile jib and piston seat base horizontal both ends protrusion in piston seat mobile jib, and the protrusion at piston seat mobile jib and piston seat base horizontal both ends respectively forms one the inclined plane recess, the upper end of piston seat mobile jib and the lower extreme fixed connection of pull rod, the upper end and the big fixed connection that claps of pull rod, pull rod and piston seat mobile jib all are located the cavity of thin clapping.

Further, the piston includes piston upper prop, piston protrusion inclined plane and piston lower prop, piston upper prop and piston lower prop fixed connection, piston protrusion inclined plane fixed connection is close to the one end of piston lower prop and is located the inboard of piston lower prop on the piston upper prop, one side of piston protrusion inclined plane is provided with the inclined plane, piston upper prop is contradicted and can be finely clapped the upper and lower slip relatively on the inner wall of thin clapping, piston upper prop cover is established on the piston seat and is made the piston cover establish and install on the piston seat, piston protrusion inclined plane stretches into in the inclined plane recess of piston seat, and the inclined plane looks adaptation and the sealing contact of piston protrusion inclined plane recess, piston lower prop slides and is contradicted on the inner wall of friction tube lower extreme, and piston lower prop can slide along friction tube from top to bottom, and make the piston protrusion inclined plane of piston stretch into to the inclined plane recess or piston protrusion inclined plane is kept away from the inclined plane recess.

Further, the spring is a plastic spring.

The beneficial effects of the utility model are as follows: according to the utility model, through the inverted triangle seal formed by the mutually matched inclined planes of the piston and the piston seat, no external force is needed to apply the extra force of the spring to return, namely, the spring is not needed to support the inclined planes of the piston and the pull rod by providing elasticity in the spring rebound process, and only the return force is needed to be provided by the spring, so that the spring only needs to provide the force for the upward movement of the pump core, and the problems of poor rebound and fatigue resistance until failure caused by the fact that the spring limited by the material characteristics of the spring such as the plastic spring is provided for a long time are solved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram showing an intermediate configuration between the start of pressing down to the pressing down limit position;

FIG. 3 is a schematic view showing a state of the structure pressed down to the pressing down limit position;

FIG. 4 is a schematic view showing a structural state in which the upward pulling is started;

FIG. 5 is a schematic diagram showing an intermediate structure between the start of lifting up to the pressing up limit position;

FIG. 6 is a schematic view showing a structural state of being lifted up to a press up limit position;

FIG. 7 is a schematic view of the piston;

FIG. 8 is a schematic view of a piston seat;

wherein the arrow direction in fig. 4-6 indicates the direction of upward pulling movement,

in the figure, 1-gland, 2-cover, 3-clip, 4-fine bat, 5-blade, 6-pull rod, 7-large bat, 8-gasket, 10-piston seat, 101-piston seat main rod, 102-inclined groove, 103-piston seat base, 11-spring, 12-friction cylinder, 13-friction seat, 14-piston, 141-piston upper column, 142-piston protruding inclined part, 143-piston lower column, 15-valve and 16-suction tube.

Detailed Description

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

as shown in fig. 1 to 8, a foam pump with good spring 11 resilience comprises a gland 1, an outer cover 2, a clip 3, a fine bat 4, a blade 5, a pull rod 6, a large bat 7, a gasket 8, a piston seat 10, a spring 11, a friction cylinder 12, a friction seat 13, a piston 14, a valve 15 and a suction pipe 16. The gland 1 is in snap connection with the outer cover 2 and is positioned at the top end of the gland 1, and the gland 1 can slide up and down along the axial direction of the outer cover 2. The big clap 7 is arranged in the inner cavity of the outer cover 2 and the big clap 7 is connected with the outer cover 2 in a sealing contact manner, the inner cavity of the outer cover 2 comprises an upper inner cavity and a lower inner cavity which are mutually communicated, the upper end of the big clap 7 extends into the upper inner cavity of the outer cover 2, the lower end extends into the lower inner cavity of the outer cover 2, the tail end of the big clap 7 extending into the lower inner cavity is movably connected with the upper end of the friction cylinder 12 which is also arranged in the lower inner cavity of the outer cover 2, and the tail end of the big clap 7 can slide up and down along the inner side wall of the upper end of the friction cylinder 12 in the axial direction. The top end of the friction cylinder 12 is fixedly connected with the outer cover 2, and the friction cylinder 12 can be connected with the inner upper wall of the outer cover 2 through a gasket 8.

The clamp 3 clamps the upper end of the outer cover 2, and the clamp 3 is used for resisting the external force to act on the gland 1 to inhibit the gland 1 from moving towards the direction close to the outer cover 2, so as to avoid unexpected situations (such as during transportation) from pressing down on the gland 1 to squeeze out liquid.

The upper end of the fine racket 4 is in contact connection with the big racket 7, and a blade 5 for opening and closing air to pass through is arranged between the upper end of the fine racket 4 and the big racket 7. The lower end of the fine bat 4 extends downwards to the bottom of a first cavity, and the first cavity is a cavity surrounded by the large bat 7, the fine bat 4, the friction cylinder 12, the friction seat 13 and the piston 14. The spring 11 is sleeved on the fine racket 4, and the upper end of the spring 11 abuts against a protruding portion (not shown in the figure) at the upper end of the fine racket 4 to be propped against the fine racket 4, and the lower end of the spring 11 abuts against the friction seat 13 to be propped against the friction seat 13, so that the spring 11 is arranged between the upper end of the fine racket 4 and the friction seat 13.

The friction seat 13 is fixedly installed on the friction cylinder 12 and is located in the cavity of the friction cylinder 12, and the friction seat 13 can be fixedly or in a collision manner installed on a step (not shown in the figure) protruding inwards of the friction cylinder 12. The friction seats 13 are located at both sides of the spring 11 and the lower ends of the spring 11 extend into the friction seats 13 at both sides.

The valve 15 for opening and closing the air to pass through is arranged in the inner cavity at the lower end of the friction cylinder 12, the friction cylinder 12 at the lower end of the valve 15 is connected with the suction pipe 16 in a communicating way, and the suction pipe 16 is used for connecting external liquid in a communicating way, so that the liquid can enter the friction cylinder 12 through the suction pipe 16. For example, the foam pump may be mounted in a bottle containing liquid, and the straw 16 may extend into the liquid in the bottle.

The piston seat 10 comprises a piston seat main rod 101, an inclined surface groove 102 and a piston seat base 103, wherein the piston seat main rod 101 is fixedly connected with the piston seat base 103, the piston seat base 103 is transversely and fixedly connected with the lower end of the piston seat main rod 101, the transverse two ends of the piston seat base 103 are protruded out of the piston seat main rod 101, and the protruding parts of the piston seat main rod 101 and the transverse two ends of the piston seat base 103 respectively form the inclined surface groove 102. The upper end of the piston seat main rod 101 is fixedly connected with the lower end of the pull rod 6, the upper end of the pull rod 6 is fixedly connected with the large racket 7, and the pull rod 6 and the piston seat main rod 101 are both positioned in the cavity of the fine racket 4.

The piston 14 comprises an upper piston column 141, a convex piston inclined part 142 and a lower piston column 143, the upper piston column 141 and the lower piston column 143 are fixedly connected, the convex piston inclined part 142 is fixedly connected to one end of the upper piston column 141, which is close to the lower piston column 143, and is positioned on the inner side of the lower piston column 143, and an inclined plane is arranged on one side of the convex piston inclined part 142.

The piston upper column 141 abuts against the inner wall of the fine bat 4 and can slide up and down relative to the fine bat 4, that is, the fine bat 4 can slide up and down relative to the piston 14 along the axial direction (i.e., vertical direction) of the fine bat 4. The piston upper column 141 is fitted over the piston seat 10 such that the piston 14 is fitted over the piston seat 10. The piston projecting ramp 142 extends into the ramp recess 102 of the piston seat 10, and the ramps of the piston projecting ramp 142 and the ramp recess 102 are adapted to sealingly contact. The lower piston column 143 slides against the inner wall of the lower end of the barrel 12, and the lower piston column 143 slides up and down along the barrel 12, so that the piston 14 slides up and down along the barrel 12, and further the piston projection inclined part 142 of the piston 14 extends into the inclined surface groove 102 or the piston projection inclined part 142 is far away from the inclined surface groove 102, so that the piston 14 is in sealing connection or disconnection with the piston seat 10, when the piston 14 is disconnected from the piston seat 10, an open circuit is formed between the piston 14 and the piston seat 10, and thus air of the cavity in the barrel 12 close to the valve 15 flows into the cavity of the fine bat 4 through the open circuit and finally flows out through the gland 1.

In actual use, after the clip 3 is taken out, an external force (e.g. a human hand) presses the gland 1 downwards, the gland 1 moves towards the direction close to the outer cover 2, the gland 1 drives the large flap 7 to move downwards, and because a small gap exists between the small flap 4 and the large flap 7, the pull rod 6 protrudes out of the small flap 4 to be in contact with the large flap 7, so that the large flap 7 drives the pull rod 6 to move downwards for a certain distance before contacting with the small flap 4 to drive the small flap 4 and the pull rod 6 to move downwards together, so that the pull rod 6 drives the piston seat 10 to move downwards for a certain distance until the small flap 4 is driven to move downwards to drive the piston 14 to also move downwards together, so that the piston seat 10 moves downwards for a certain distance corresponding to the piston 14, and the piston seat 10 is separated from the sealing connection with the piston 14 to be in the open connection, namely, the piston protruding inclined part 142 is separated from the inclined surface groove 102, and the open circuit is formed between the inclined surface groove 102 and the piston protruding inclined part 142. At this time, air in the inner cavity of the barrel 12 located below the first cavity may enter the cavity of the fine bat 4 from this open circuit, and may be discharged through the gland 1.

When the external force is removed (e.g. the hands are loosened), under the action of the spring 11, the spring 11 drives the fine bat 4 to advance a certain distance upwards relative to the piston 14, and then the fine bat 4 contacts the large bat 7 to drive the large bat 7, the pull rod 6 and the piston seat 10 to move upwards a certain distance together, so that the piston seat 10 moves towards the piston 14 until the piston seat 10 is connected with the piston 14, the piston protruding inclined part 142 stretches into the inclined surface groove 102 again, at this time, because the air in the cavity below the friction cylinder 12 is exhausted, a vacuum environment is formed in the cavity below the friction cylinder 12, and because the internal pressure of the bottle where the straw 16 is located is higher than the pressure in the cavity below the friction cylinder 12, the valve 15 moves upwards slightly, and the liquid in the bottle enters the cavity below the friction cylinder 12 through the valve 15 to be stored. When the above-described pressing-releasing operation is repeated again, the liquid is discharged, that is, squeezed out, through the pressing cover 1, and the liquid is mixed with air through a friction net (not shown in the drawing) to foam, and finally discharged through the pressing cover 1.

When the external force is removed, the air in the first cavity is discharged, the external pressure is higher than the pressure in the first cavity, so that in the upward rebound process of the spring 11, the external air can pass through the gap among the gland 1, the outer cover 2 and the large clap 7, the blade 5 is promoted to be opened and enter the first cavity, so that the balance between the first cavity and the external air pressure is maintained, and a part of air passes through the bottle where the small Kong Xiguan on the side of the friction cylinder 12 is positioned, so that the balance between the bottle and the external pressure is maintained.

After repeating the above pressing-releasing operation, the foam liquid can be continuously extruded until the liquid is consumed or the external force is lost.

In the above operation process, the inverted triangle seal formed by the mutually matched inclined planes of the piston 14 and the piston seat 10 makes no external force apply the extra force of the spring 11 to return, that is, the spring 11 only needs to provide the return force to support the inclined plane seal of the piston 14 and the pull rod 6 without providing the elastic force in the rebound process of the spring 11, so that the spring 11 only needs to provide the force (i.e. the rebound force) of the upward movement of the pump core, thereby adopting the plastic spring 11 and solving the problems of poor rebound and fatigue resistance until failure caused by providing the larger force for a long time by the spring 11 such as the plastic spring 11 and the like limited by the self material characteristics.

Of course, the spring 11 may be a metal spring 11 in actual use, and the non-metal spring 11 may be a plastic spring 11.

The embodiment disclosed in the present specification is merely an illustration of one-sided features of the present utility model, and the protection scope of the present utility model is not limited to this embodiment, and any other functionally equivalent embodiment falls within the protection scope of the present utility model. Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the present utility model as defined in the appended claims.

Claims

1. A full-plastic foam pump with a sealing structure is characterized by comprising an upper end component, a fine bat, a pull rod, a friction cylinder, a spring, a friction seat, a piston seat, a valve and a suction pipe, wherein the upper end component is respectively connected with the friction cylinder and the fine bat,

2. The self-contained seal structured all-plastic foam pump of claim 1, wherein the upper end assembly comprises a gland, an outer cap and a large flap, the gland is snap-connected to the outer cap and located at the top end of the gland, the gland is slidable up and down along the axis of the outer cap, the large flap is located in the inner cavity of the outer cap and the large flap is in sealing contact connection with the outer cap, the inner cavity of the outer cap comprises an upper inner cavity and a lower inner cavity which are mutually communicated, the upper end of the large flap extends into the upper inner cavity of the outer cap, the lower end of the large flap extends into the lower inner cavity of the outer cap, the end of the large flap extending into the lower inner cavity is movably connected with the upper end of the friction cylinder which is also located in the lower inner cavity of the outer cap, the end of the large flap can slide up and down along the inner side wall of the upper end of the friction cylinder in the axial direction, and the top end of the friction cylinder is fixedly connected with the outer cap.

3. The self-contained, hermetically sealed construction of the plastic foam pump of claim 2 further comprising a gasket, the friction cylinder being connected to the inner upper wall of the outer cap by the gasket.

4. The self-contained, hermetically sealed, foam pump of claim 2 further comprising a clip which clamps the upper end of the outer cap, the clip being adapted to bear against the externally applied gland to inhibit movement of the gland in a direction toward the outer cap.

5. The full-plastic foam pump with the sealing structure according to claim 2, further comprising a blade, wherein the upper end of the fine bat is in contact connection with the large bat, the blade for opening and closing air to pass through is arranged between the upper end of the fine bat and the large bat, the lower end of the fine bat extends downwards to the bottom of the first cavity, the first cavity is defined by the large bat, the fine bat, the friction cylinder, the friction seat and the piston, the spring is sleeved on the fine bat, the upper end of the spring is abutted against the protruding part of the upper end of the fine bat and is abutted against the fine bat, and the lower end of the spring is abutted against the friction seat on the friction seat, so that the spring is arranged between the upper end of the fine bat and the friction seat.

6. The self-contained seal structured all-plastic foam pump of claim 5 wherein the friction seat is fixedly mounted on the friction cylinder and located within the cavity of the friction cylinder, the friction seat being located on either side of the spring and the lower end of the spring extending into the friction seat on either side.

7. The self-contained, sealed, all-plastic foam pump of claim 6 wherein the friction seat is mounted on the friction cylinder and within the cavity of the friction cylinder by a fixed or interference fit on an inwardly projecting step of the friction cylinder.

8. The foam pump of claim 5, wherein the piston seat comprises a piston seat main rod, an inclined surface groove and a piston seat base, the piston seat main rod is fixedly connected with the piston seat base, the piston seat base is transversely and fixedly connected with the lower end of the piston seat main rod, two transverse ends of the piston seat base are protruded out of the piston seat main rod, the protruding parts of the piston seat main rod and the two transverse ends of the piston seat base respectively form the inclined surface groove, the upper end of the piston seat main rod is fixedly connected with the lower end of the pull rod, the upper end of the pull rod is fixedly connected with the large racket, and the pull rod and the piston seat main rod are both positioned in the cavity of the fine racket.

9. The full-plastic foam pump with the sealing structure according to claim 8, wherein the piston comprises an upper piston column, a convex inclined part and a lower piston column, the upper piston column and the lower piston column are fixedly connected, the convex inclined part is fixedly connected to one end of the upper piston column, which is close to the lower piston column, and is positioned on the inner side of the lower piston column, one side of the convex inclined part is provided with an inclined plane, the upper piston column is abutted against the inner wall of the fine shooting and can slide up and down relative to the fine shooting, the upper piston column is sleeved on the piston seat so that the piston sleeve is installed on the piston seat, the convex inclined part of the piston extends into the inclined plane groove of the piston seat, the inclined planes of the convex inclined part and the inclined plane groove are matched for sealing contact, the lower piston column is slidably abutted against the inner wall of the lower end of the friction cylinder, and the lower piston column can slide up and down along the friction cylinder, so that the convex inclined part of the piston extends into the inclined plane groove or the convex inclined part of the piston is far away from the inclined plane groove.

10. The self-contained, hermetically sealed construction of an all plastic foam pump of any one of claims 1 to 9 wherein the spring is a plastic spring.