Pump core suitable for high-viscosity liquid foundation

Abstract

The utility model discloses a pump core suitable for high-viscosity liquid foundation, which comprises a body, a pump chamber arranged on the body and a limiting ring groove arranged around the pump chamber, a one-way valve arranged on an inlet of the pump chamber, a piston arranged in the pump chamber and arranged between a main column and an auxiliary column, a pump-out channel arranged at the middle upper part of the auxiliary column, and a pump-out channel arranged at the lower part of the auxiliary column. The pump-out channel is provided with a lateral inlet and an auxiliary column, the auxiliary column penetrates through the piston and the main column, is fixedly connected with the main column and is vertically and movably connected with the piston, the lateral inlet is connected with the pump chamber through a bottom gap between the auxiliary column and the piston, the main column is slidably inserted into a collar piece and a limiting ring groove, the collar piece is fixed to the outer side of the pump chamber, and a piston limiting ring extending downwards is arranged at the top of the collar piece. An everted fixing ring is arranged at the bottom, and a spring is clamped and pressed between the fixing ring and the main column. The utility model has the advantages of shorter structure, smooth pressing, good sealing performance and reliable connection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cosmetic packaging, especially relates to a pump core suitable for high viscosity foundation. BACKGROUND

[0002] With the continuous development of the cosmetic market, as an important base makeup product, the packaging and use mode of foundation are increasingly concerned. At present, the packaging of foundation usually adopts a pump type container, and the foundation is discharged from the container by pressing the pump core. However, for high viscosity foundation, the traditional pump core structure often has some problems: 1) the pump core height is large: in order to ensure sufficient stroke and displacement, the overall height of the traditional pump core structure is usually high, which limits the flexibility of the overall design of the product, and it is difficult to realize miniaturization and portability. 2) pressing is not smooth: due to the poor flowability of high viscosity foundation, the pump core is prone to swing or tilt during pressing, which may cause jamming, affect the use experience, and even cause the foundation to be unable to be normally discharged. 3) backflow or reverse flow: the traditional pump core structure has poor sealing performance, which may cause backflow or reverse flow of the foundation, resulting in waste and pollution. 4) unreliable connection between the secondary column and the main column: the connection between the secondary column and the main column is not firm, which may be detached or loose during use, affecting the normal work of the pump core. Therefore, it is necessary to develop a new type of pump core structure suitable for high viscosity foundation to solve the above problems and improve the user experience. SUMMARY

[0003] The utility model discloses a pump core suitable for high viscosity foundation, which has the advantages of low structure, smooth pressing, good sealing performance and reliable connection.

[0004] The utility model discloses a pump core suitable for high viscosity foundation, which has the advantages of low structure, smooth pressing, good sealing performance and reliable connection.

[0005] The main column is provided with a middle body and a skirt edge fixedly connected with the middle body, the skirt edge is inserted into the limiting ring groove and is in sliding connection with the inner side of the outer side wall of the limiting ring groove, and the middle body is inserted into the top of the collar and is in sliding connection with the collar.

[0006] The one-way valve is any one of a duckbill valve, a ball valve and a diaphragm valve.

[0007] The spring is a plastic spring or a metal spring.

[0008] The auxiliary column and the main column are fixedly connected through interference fit.

[0009] The auxiliary column and the main column are connected through buckling.

[0010] The bottom of the auxiliary column is buckled on the bottom of the piston.

[0011] The utility model has the advantages and positive effects that:

[0012] 1) low design: the overall height of the pump core is low, which is conducive to the size height control of the overall design of the product and facilitates miniaturization and portability.

[0013] 2) smooth pressing: the main column adopts double ring embracing type guiding, which can avoid radial swing in the pressing process, thereby preventing the main column from tilting and blocking, and ensuring smooth discharge of the foundation liquid.

[0014] 3) good sealing property: the one-way valve can effectively prevent the backflow or reverse flow of the foundation liquid, thereby avoiding waste and pollution.

[0015] 4) reliable connection: the auxiliary column and the main column are fixed through interference fit and buckling structure, and the connection is firm and reliable and is not easy to fall off or loosen.

[0016] 5) wide applicability: plastic springs or metal springs can be selected according to needs, and the utility model is suitable for foundation liquids with different viscosity ranges. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a decomposition structure schematic view of the utility model;

[0018] Figure 2 It is a structure schematic view of the utility model.

[0019] In the drawing: 1, main column; 1-1, middle body; 1-2, skirt edge; 2, body; 2-1, pump chamber; 2-2, limiting ring groove; 3, auxiliary column; 3-1, pump-out channel; 3-2, lateral inlet; 4, spring; 5, one-way valve; 6, collar; 6-1, piston limiting ring; 6-2, fixed ring; 7, piston. DETAILED DESCRIPTION

[0020] In order to further understand the invention content, characteristics and effects of the utility model, the following examples are given, and the drawings are described in detail as follows:

[0021] Please refer to Figure 1 and Figure 2 A pump core suitable for high viscosity foundation liquid, comprising a body 2, a pump chamber 2-1 is arranged on the body 2, and a limiting ring groove 2-2 is arranged around the pump chamber, a one-way valve 5 is installed on the inlet of the pump chamber 2-1, and a piston 7 is installed in the pump chamber 2-2.

[0022] The piston 7 is arranged between the main column 1 and the auxiliary column 3, a pump-out channel 3-1 is arranged in the upper middle part of the auxiliary column 3, the pump-out channel 3-1 is provided with a lateral inlet 3-2, the auxiliary column 3 is sleeved in the piston 7 and the main column 1 and is fixedly connected with the main column 1 and movably connected with the piston 7, and the lateral inlet 3-2 is connected with the pump chamber 2-1 through the gap between the auxiliary column 3 and the bottom of the piston 7.

[0023] The main column 1 is slidably inserted into the collar 6 and the limiting ring groove 2-2, the collar 6 is fixed outside the pump chamber 2-1, the top of the collar 6 is provided with a downward extending piston limiting ring 6-1, the bottom of the collar 6 is provided with an outward turned fixing ring 6-2, and a spring 4 is clamped between the fixing ring 6-2 and the main column 1.

[0024] The pump core is compact in the height direction, which is beneficial to the height size control of the overall design of the product.

[0025] The more preferred scheme of the embodiment is as follows:

[0026] The main column 1 is provided with a middle body 1-1 and a skirt 1-2 fixedly connected with the middle body 1-1, the skirt 1-2 is inserted into the limiting ring groove 2-2 and slidably connected with the inner side of the outer side wall of the limiting ring groove, and the middle body 1-2 is inserted into the top of the collar 6 and slidably connected with the collar 6.

[0027] The main column adopts a ring embracing type double guide, which can avoid radial swing during pressing, thereby preventing the main column from tilting and jamming and ensuring smooth discharge of the foundation liquid.

[0028] The one-way valve 5 is any one of a duckbill valve, a ball valve and a diaphragm valve.

[0029] The spring 4 is a plastic spring or a metal spring.

[0030] The auxiliary column 3 and the main column 1 are sealingly fixed in an interference fit and are connected by buckles.

[0031] The bottom of the auxiliary column 3 is reversely buckled on the bottom of the piston 7, and the sealing performance is good.

[0032] The working principle of the utility model is:

[0033] When the main column 1 is pressed, the main column 1 moves downward, the spring 4 is compressed, the space pressure in the pump chamber is increased, the one-way valve 5 is closed, the auxiliary column 3 is separated from the piston 7, the pump chamber is communicated with the pump outlet channel, along with the continuous pressing, the space pressure in the pump chamber is continuously increased, until the foundation liquid is discharged from the pump outlet channel.

[0034] When the main column 1 is released, the restoring force of the spring 4 makes the main column 1 rebound upward, the space pressure in the pump chamber is reduced, the one-way valve 5 is opened, the auxiliary column 3 is sealed with the bottom of the piston 7, under the action of the atmospheric pressure, the foundation liquid flows into the space of the pump chamber from the one-way valve, and preparation is made for the next pressing.

[0035] Although the preferred embodiment of the utility model is described above in combination with the drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative, and is not restrictive, and the ordinary skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection scope of the utility model.

Claims

1. A pump core suitable for use with a high viscosity liquid foundation, comprising a body, characterised in that, The pump chamber is arranged on the body, and a limiting ring groove is arranged around the pump chamber, a one-way valve is arranged on the inlet of the pump chamber, and a piston is arranged in the pump chamber, The piston is arranged between the main column and the auxiliary column, the pump-out passage is arranged in the middle and upper part of the auxiliary column, the auxiliary column is sleeved in the piston and the main column, and is fixed with the main column and movably connected with the piston, the lateral inlet is connected with the pump chamber through the gap between the auxiliary column and the bottom of the piston, The main column is slidably sleeved in the collar and the limiting ring groove, the collar is fixed outside the pump chamber, the top of the collar is provided with a downwardly extending piston limiting ring, and the bottom of the collar is provided with an outwardly turned fixing ring, and a spring is clamped between the fixing ring and the main column.

2. The pump core suitable for high viscosity foundation liquid according to claim 1, characterized in that, The main column is provided with a middle body and a skirt connected with the middle body, the skirt is sleeved in the limiting ring groove and slidably connected with the inner side of the outer side wall of the limiting ring groove, and the middle body is sleeved in the top of the collar and slidably connected with the collar.

3. The pump core suitable for high viscosity liquid foundation according to claim 1, characterized in that, The one-way valve is any one of a duckbill valve, a ball valve and a diaphragm valve.

4. The pump core suitable for high viscosity liquid foundation according to claim 1, characterized in that, The spring is a plastic spring or a metal spring.

5. The pump core suitable for high viscosity liquid foundation according to claim 1, characterized in that, The auxiliary column and the main column are sealingly fixed by interference fit.

6. The pump core suitable for high viscosity foundation liquid according to claim 5, characterized in that, The auxiliary column and the main column are connected by buckling.

7. The pump core suitable for high viscosity liquid foundation according to claim 1, characterized in that, The bottom of the auxiliary column is reversely buckled on the bottom of the piston.

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