Pump head with variable ejection quantity

Abstract

The utility model relates to a pump head with variable spraying quantity, which is designed aiming at solving the technical problems that the variable spraying quantity of the existing similar products is difficult to adjust in two modes of normal quantity and low spraying quantity, the structural design is complicated, and the production and the use are inconvenient. The pump head is characterized in that a protruding lower ring rib is arranged in a groove in the top of a large ring between the outer side of a valve rod at the assembly position of a pump core of the pump head and the inner wall of the large ring, and the outer diameter of the lower ring rib is provided with a closing position, a first liquid outlet position and a second liquid outlet position; a protruding upper ring rib is arranged between the outer side of a liquid inlet hole in the bottom of the head cap and the inner wall of the bottom of the head cap, a protruding limiting rib is arranged on the inner diameter of the upper ring rib, a valve rod of the pump core assembly extends out of a center hole in the top of the large ring and is connected with the liquid inlet hole in the bottom of the head cap, and meanwhile the inner diameter of the upper ring rib of the head cap is sleeved with the outer diameter of a lower ring rib of the large ring. When the head cap is rotated, the limiting rib at the upper ring rib of the head cap is located at one position of the lower ring rib of the large ring, the first liquid outlet amount is a normal amount, and the second liquid outlet amount is another liquid outlet amount.

Description

Technical Field

[0001] The utility model relates to a pump head for an emulsion bottle, in particular to a pump head with a variable ejection volume. Background Art

[0002] A lotion bottle is a miniature sprayer used for storing and extruding lotions. It is mainly used for storing and accessing lotions, especially cosmetic lotions. It is generally composed of an outer cover, a head cap, a pump core, a large ring, and a bottle body. The pump head generally refers to the main body composed of the main components after omitting the bottle body. Some existing lotion bottles have pump heads with variable liquid discharge structures, such as the application number 202110937553.X disclosed in the Chinese patent literature, the application publication date 2021.12.17, and the invention name "A variable lotion pump"; the pump comprises a pump body and a pump head slidably connected to the pump body, the pump body being provided with a cavity, the bottom end of the pump body being provided with an inlet A, the pump head being provided with an outlet B, and a flow channel being provided at the center of the pump head; a first check valve is provided at the position of the inlet A, a piston slidably connected to the pump head in the cavity being sleeved, a return spring being installed between the piston and the inner bottom surface of the cavity, and the variable lotion pump further comprising a displacement adjustment mechanism, the displacement adjustment mechanism being provided on the pump head for adjusting the amount of lotion in the bottle ejected when pressed. The displacement adjustment mechanism of the above-mentioned pump head is relatively complex in design, and is relatively inconvenient to produce and use. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a variable discharge volume pump head in the art. This solves the technical problems of existing similar products, such as the difficulty in achieving both normal and low discharge volume adjustment, the complex structural design, and the resulting inconvenience in production and use. This objective is achieved through the following technical solution.

[0004] A variable discharge volume pump head, wherein a pump core assembly is fixedly provided at the bottom of the center hole of the large circle of the pump head, a suction pipe is provided at the suction pipe hole at the bottom of the pump core assembly, a raised lower circle rib is provided in the groove at the top of the large circle between the outer side of the valve stem of the pump core assembly extending out of the center hole at the top of the large circle and the inner wall of the large circle, and the outer diameter of the lower circle rib is provided with a closing position and a first liquid outlet position; a raised upper circle rib is provided between the outer side of the liquid inlet hole at the bottom of the head cap and the inner wall of the bottom of the head cap, and the inner diameter of the upper circle rib is provided with a raised limiting rib, the valve stem of the pump core assembly extends out of the center hole at the top of the large circle and is connected to the liquid inlet hole at the bottom of the head cap, and at the same time, the inner diameter of the upper circle rib of the head cap fits with the outer diameter of the lower circle rib of the large circle; when the head cap is rotated, the limiting rib at the upper circle rib of the head cap is located at the closing position or the first liquid outlet position at the lower circle rib of the large circle. The key point of its structural design is that the lower rib of the large ring is provided with a second liquid outlet position. The second liquid outlet position, the first liquid outlet position, and the closed position are respectively open side grooves of different depths within the groove. The large ring below the liquid outlet of the head cap is provided with corresponding identification icons for the second liquid outlet position, the first liquid outlet position, and the closed position. This makes it easy to rotate the head cap to the corresponding liquid outlet position or closed position according to the different identification icons on the large ring.

[0005] The first liquid outlet position of the large circle is a conventional 0.48 ml liquid outlet, and the depth of the first liquid outlet position is greater than the depth of the second liquid outlet position.

[0006] The large circle is provided with three groups of equally spaced arrays of closing positions, first liquid outlet positions, and second liquid outlet positions. The closing position, second liquid outlet position, and first liquid outlet position of the large circle are arranged at angles of 60 degrees and 30 degrees respectively with the center hole of the large circle as the center of the circle.

[0007] An external spring is provided on the outer diameter of the valve stem between the top opening at the valve stem in the head cap and the large circle.

[0008] The utility model has reasonable structural design, simple and convenient production and use, and good stability; it is suitable for use as a variable spray volume pump head for cosmetic bottles such as lotion bottles, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a partial cross-sectional structural schematic diagram of an embodiment of the present utility model.

[0010] Figure 2 yes Figure 1 The diagram shows the three-dimensional structure from a top-down perspective at the large circle, with the pump core assembly added.

[0011] Figure 3 yes Figure 2 Schematic diagram of the structure in the front and top view.

[0012] Figure 4 yes Figure 1 Schematic diagram of the closed state position structure.

[0013] Figure 5 yes Figure 4 Schematic diagram of the conventional 0.48ml liquid outlet position structure in the open state.

[0014] Figure 6 yes Figure 4 Schematic diagram of the structure of another liquid discharge amount and liquid discharge position in the open state.

[0015] Serial numbers and names of the accompanying drawings: 1. Large circle, 101. Closed position, 102. First liquid outlet position, 103. Second liquid outlet position, 2. Pump core assembly, 3. Straw, 4. Spring, 5. Head cap. Implementation Method

[0016] Now, the structure of the utility model is further described in conjunction with the accompanying drawings. Figure 1 and Figure 2 As shown, a pump core assembly 2 is fixedly provided at the bottom of the center hole of the large circle 1 of the pump head, a suction pipe 3 is provided at the suction pipe hole at the bottom of the pump core assembly, a raised lower circle rib is provided in the groove at the top of the large circle between the outer side of the valve stem of the pump core assembly extending from the center hole at the top of the large circle and the inner wall of the large circle, and the outer diameter of the lower circle rib is provided with a closing position 101, a first liquid outlet position 102 and a second liquid outlet position 103; a raised upper circle rib is provided between the outer side of the liquid inlet hole at the bottom of the head cap 5 and the inner wall of the bottom of the head cap, and the inner diameter of the upper circle rib is provided with a raised limiting rib, and the valve stem of the pump core assembly extends out of the center hole at the top of the large circle and is connected to the liquid inlet hole at the bottom of the head cap, while the inner diameter of the upper circle rib of the head cap fits with the outer diameter of the lower circle rib of the large circle; when the head cap is rotated, the limiting rib at the upper circle rib of the head cap is located at the closing position, the first liquid outlet position or the second liquid outlet position at the lower circle rib of the large circle.

[0017] The above-mentioned second liquid outlet position, first liquid outlet position and closing position are respectively open side grooves of different depths in the groove, specifically: the first liquid outlet position of the large circle is the conventional 0.48ml liquid outlet, the depth of the first liquid outlet position is greater than the depth of the second liquid outlet position, and the large circle below the liquid outlet hole of the head cap is respectively provided with identification icons of the second liquid outlet position, the first liquid outlet position and the closing position. The large circle is provided with three groups of equidistant arrays of closing position, first liquid outlet position and second liquid outlet position, and the closing position, second liquid outlet position and first liquid outlet position of the large circle are respectively arranged at angles of 60 degrees and 30 degrees with the center hole of the large circle as the center. A spring 4 is provided on the outer diameter of the valve stem between the top opening at the valve stem in the head cap and the large circle.

[0018] When in use, the large circle of the pump head is screwed into the corresponding lotion bottle, and the rotating and pressing head cap switches from the closed position to the first liquid outlet position or the second liquid outlet position. The liquid in the lotion bottle can be sprayed out by pressing the head cap back and forth; after use, the rotating head cap is only in the closed position.

[0019] That is, when the pump head rotates to the closed position 101, it is in the closed state; rotate the head cap 60 degrees counterclockwise and stop at the first liquid outlet 102. At this time, press it, and the liquid output when pressed to the bottom is 0.48mL; if you want to output less liquid, just rotate the head cap 30 degrees counterclockwise and stop at the second liquid outlet position 103. At this time, you can achieve another liquid output.

[0020] In summary, this pump head utilizes dual pressure grooves to achieve two different discharge volumes. The large ring of this pump head incorporates a pressure groove that limits and adjusts the discharge volume, in addition to the conventional 0.48mL pressure groove, thus achieving these two discharge volume requirements. Inspired by the interaction between the existing internal limiting ribs of the head cap and the two different grooves in the large ring for closing and pressing, this pump head adds another groove in the large ring, which is smaller in depth than the pressure groove, thereby achieving a different discharge volume.

Claims

1. A variable discharge volume pump head, wherein a pump core assembly (2) is fixedly provided at the bottom of the center hole of the large circle (1) of the pump head, a suction pipe (3) is provided at the suction pipe hole at the bottom of the pump core assembly, a raised lower circle rib is provided in the groove at the top of the large circle between the outer side of the valve stem at the pump core assembly extending from the center hole at the top of the large circle and the inner wall of the large circle, and the outer diameter of the lower circle rib is provided with a closing position (101) and a first liquid outlet position (102); a raised upper circle rib is provided between the outer side of the liquid inlet hole at the bottom of the head cap (5) and the inner wall of the bottom of the head cap, and the inner diameter of the upper circle rib is provided with a raised limiting rib, the valve stem of the pump core assembly extends from the center hole at the top of the large circle and is connected to the liquid inlet hole at the bottom of the head cap, and at the same time, the inner diameter of the upper circle rib of the head cap fits with the outer diameter of the lower circle rib of the large circle; when the head cap is rotated, the limiting rib at the upper circle rib of the head cap is located at the closing position or the first liquid outlet position at the lower circle rib of the large circle; it is characterized in that The lower rib of the large circle (1) is provided with a second liquid outlet position (103), and the second liquid outlet position, the first liquid outlet position (102) and the closed position (101) are respectively open side grooves of different depths in the groove, and the large circle below the liquid outlet hole of the head cap (5) is provided with identification icons of the second liquid outlet position, the first liquid outlet position and the closed position respectively.

2. The variable discharge pump head according to claim 1, characterized in that The first liquid outlet level (102) of the large circle (1) is a conventional 0.48 ml liquid outlet, and the depth of the first liquid outlet level is greater than the depth of the second liquid outlet level (103).

3. The variable discharge volume pump head according to claim 2, characterized in that The large circle (1) is provided with three groups of equally spaced arrays of closing positions (101), first liquid outlet positions (102), and second liquid outlet positions (103), wherein the closing position, second liquid outlet position, and first liquid outlet position of the large circle are arranged at angles of 60 degrees and 30 degrees, respectively, with the central hole of the large circle as the center.

4. The variable discharge volume pump head according to claim 1, characterized in that A spring (4) is provided on the outer diameter of the valve stem between the top opening of the valve stem in the head cap (5) and the large ring (1).

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