Double-tube bottle

Abstract

The double-tube bottle comprises an outer tube, a pressing cap, a pump head, a valve rod, a piston rod, a piston and a cylinder sleeve, the pressing cap is screwed at the upper end of the outer tube, the lower end of the pump head is fixedly connected with the upper end of the valve rod, the piston rod is inserted into the valve rod and fixedly connected with the valve rod, the piston is sleeved at the lower end of the piston rod, and the outer wall of the piston is contacted with the inner wall of the cylinder sleeve. The inner pipe is fixed in the outer pipe, the upper end and the lower end of the inner pipe are open, the cylinder sleeve is contained in the inner pipe, the insertion pipe is fixed at the lower end of the piston rod, the suction pipe is fixed at the lower end of the insertion pipe, and the lower end of the suction pipe is provided with a sealing ring which protrudes outwards and is used for blocking the opening in the lower end of the inner pipe. The pump head is pressed downwards by hand, the sealing ring moves downwards, the opening in the lower end of the inner pipe is opened, powder in the inner pipe can fall into the outer pipe, liquid and split bodies can be mixed together after a user shakes the powder evenly, premixing is not needed during factory processing, and therefore the shelf life of products is prolonged.

Description

Technical Field

[0001] This utility model relates to a cosmetic bottle, specifically a double-tube bottle. Background Technology

[0002] In the cosmetics industry, cosmetic bottles, as the primary packaging containers, are crucial in their design and function for maintaining the stability of cosmetics and extending their shelf life. The working principle of a cosmetic bottle dispensing liquid by squeezing relies mainly on its pump head structure. Pressing the pump head moves the piston downwards, compressing the spring inside the pump head. As the piston moves downwards, pressure is created inside the cosmetic bottle. This pressure pushes the liquid inside the bottle upwards through the internal channels of the pump head, and the liquid is finally squeezed out from the nozzle.

[0003] In existing cosmetic bottle technology, many cosmetic bottles contain a mixture of powder and liquid. This mixture needs to be pre-mixed during the production process before being filled into the cosmetic bottle. However, this mixing method has shelf-life issues. After mixing, the chemical and physical stability of the powder and liquid is often affected, and the powder components are prone to hydrolysis, oxidation, and other chemical reactions due to the presence of the liquid. Therefore, compared to unmixed powder and liquid, the shelf life after mixing is shorter. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a double-tube bottle.

[0005] The technical solution of this utility model is: a double-tube bottle, which includes an outer tube, a pressure cap, a pump head, a valve stem, a piston rod, a piston, and a cylinder liner. The pressure cap is screwed onto the upper end of the outer tube. The lower end of the pump head is fixedly connected to the upper end of the valve stem. The piston rod is inserted into the valve stem and fixedly connected to the valve stem. The piston sleeve is placed on the lower end of the piston rod, and the outer wall of the piston contacts the inner wall of the cylinder liner. A spring extending vertically is installed between the pump head and the pressure cap. It also includes an inner tube, an insert tube, and a suction tube. The inner tube is fixed inside the outer tube and has openings at both the upper and lower ends. The cylinder liner is housed inside the inner tube. The insert tube is fixed to the lower end of the piston rod. The suction tube is fixed to the lower end of the insert tube. The lower end of the suction tube has a convex sealing ring for blocking the opening at the lower end of the inner tube.

[0006] Furthermore, the outer wall of the sealing ring contacts the inner wall of the inner tube, causing the sealing ring to block the lower opening of the inner tube.

[0007] Furthermore, when the pump head moves downward, the suction pipe moves downward, the sealing ring moves downward and separates from the inner tube, and the opening at the lower end of the inner tube is opened, so that the inner tube is connected to the outer tube.

[0008] The advantages of using the double-tube bottle provided by this utility model are as follows: the outer tube contains liquid and the inner tube contains powder. When the user uses it for the first time, pressing down on the pump head moves the sealing ring downwards, opening the lower end of the inner tube, and the powder in the inner tube falls into the outer tube. After shaking it evenly, the liquid and powder can be mixed together. No pre-mixing is required during factory processing, thereby improving the shelf life of the product. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of one usage state of the present invention;

[0010] Figure 2 This is a schematic diagram of another usage state of this utility model.

[0011] In the diagram: 1—outer tube, 2—pressure cap, 3—pump head, 4—valve stem, 5—piston rod, 6—piston, 7—cylinder liner, 8—spring, 9—inner tube, 10—insertion tube, 11—suction tube, 111—sealing ring, 12—protective cover, 13—plug. Detailed Implementation

[0012] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0013] like Figure 1 , Figure 2 As shown, a double-tube bottle includes an outer tube 1, a pressure cap 2, a pump head 3, a valve stem 4, a piston rod 5, a piston 6, and a cylinder liner 7. The pressure cap 2 is screwed onto the upper end of the outer tube 1. The lower end of the pump head 3 is fixedly connected to the upper end of the valve stem 4. The piston rod 5 is inserted into and fixedly connected to the valve stem 4. The piston 6 is sleeved on the lower end of the piston rod 5, and the outer wall of the piston 6 contacts the inner wall of the cylinder liner 7. A vertically extending spring 8 is installed between the pump head 3 and the pressure cap 2. Another double-tube bottle also includes an inner tube 9, an insert tube 10, and a suction tube 11. The inner tube 9 is fixed inside the outer tube 1, and both ends of the inner tube 9 are open. The cylinder liner 7 is housed inside the inner tube 9. The insert tube 10 is fixed to the lower end of the piston rod 5. The suction tube 11 is fixed to the lower end of the insert tube 10, and the lower end of the suction tube 11 has a protruding sealing ring 111 for blocking the lower opening of the inner tube 9. A protective cover 12 for covering the pump head 3 is snapped onto the pressure cap 2. The upper end of the cylinder liner 7 is fixed by the inner tube 9 and the pressure cap 2. The suction pipe 11, the insertion pipe 10, the piston rod 5, the valve rod 4, and the pump head 3 are connected from bottom to top. The opening at the upper end of the inner tube 9 is blocked by a plug 13, and the valve rod 4 passes through the plug 13.

[0014] like Figure 1As shown, at this time, the outer wall of the sealing ring 111 contacts the inner wall of the inner tube 9, causing the sealing ring 111 to block the lower opening of the inner tube 9. When the pump head 3 is pressed by hand, the pump head 3 moves downward, which in turn moves the valve rod 4 downward. The valve rod 4 moves the piston rod 5 downward, which in turn moves the insertion tube 10 downward. The insertion tube 10 moves the suction tube 11 downward, so the sealing ring 111 also moves downward and separates from the inner tube 9. The lower opening of the inner tube 9 is opened, allowing the inner tube 9 to connect with the outer tube 1, as shown. Figure 2 As shown.

[0015] The present invention provides a double-tube bottle, in which the outer tube 1 contains liquid and the inner tube 9 contains powder. When the user uses it for the first time, he / she presses down the pump head 3, the sealing ring 111 moves downward, the lower end opening of the inner tube 9 is opened, and the powder in the inner tube 9 falls into the outer tube 1. After the user shakes it evenly, the liquid and powder can be mixed together. No pre-mixing is required during factory processing, thereby improving the shelf life of the product.

[0016] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. A double-tube bottle, comprising an outer tube, a pressure cap, a pump head, a valve stem, a piston rod, a piston, and a cylinder liner, wherein the pressure cap is screwed onto the upper end of the outer tube, the lower end of the pump head is fixedly connected to the upper end of the valve stem, the piston rod is inserted into and fixedly connected to the valve stem, the piston sleeve is located on the lower end of the piston rod, and the outer wall of the piston contacts the inner wall of the cylinder liner, and a vertically extending spring is installed between the pump head and the pressure cap, characterized in that: It also includes an inner tube, an insertion tube, and a suction tube. The inner tube is fixed inside the outer tube and has openings at both the top and bottom. The cylinder liner is housed inside the inner tube. The insertion tube is fixed at the lower end of the piston rod. The suction tube is fixed at the lower end of the insertion tube and has a convex sealing ring at the lower end of the suction tube for blocking the opening at the lower end of the inner tube.

2. A double-tube bottle according to claim 1, characterized in that: The outer wall of the sealing ring contacts the inner wall of the inner tube, causing the sealing ring to block the opening at the lower end of the inner tube.

3. A double-tube bottle according to claim 2, characterized in that: When the pump head moves downward, the suction pipe moves downward, the sealing ring moves downward and separates from the inner tube, and the opening at the lower end of the inner tube is opened, so that the inner tube is connected to the outer tube.

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