Pump head structure

Abstract

The utility model relates to the technical field of packaging bottles, in particular to a pump head structure, before a pump head is used, a first containing cavity and a second containing cavity are filled with liquid, a pressing head is pressed downwards to push a main column and an auxiliary piston to move downwards, so that the volume in the pump body is reduced, the pressure is increased, and the liquid is sprayed outwards through the pressing head; under the influence of the reset spring, the pressing head can reset, the volume in the pump body is increased, negative pressure is formed, the glass bead is opened under the action of the negative pressure, and liquid in the bottle can enter the first containing cavity and the second containing cavity through the suction pipe. According to the pump head structure, more liquid can be contained in the unused state, more liquid can be pumped out under the condition that the pressing head is pressed downwards by the same distance, and therefore the height of the pressing head can be designed to be low.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bottles, in particular to a pump head structure. Background Art

[0002] The operating principle of the compression pump is to manually press the button downward to reduce the volume in the pump body and increase the pressure. The liquid passes through the main column and then sprays out through the button. At this time, release the button and the button will reset under the influence of the reset spring. The volume in the pump body increases to form a negative pressure. The glass bead opens under the action of negative pressure, and the liquid in the bottle enters the pump body. At this time, there is a certain amount of liquid in the pump body. When the button is pressed again, the liquid stored in the pump body will rush upward and spray out through the button.

[0003] For example, the patent document with publication number CN219584852U discloses a push-type pump head structure, including a pump body, a push head, a straw and a nut cover, wherein the outer periphery of the bottom of the push head is slidably connected to the top inner wall of the pump body, the straw is inserted into the bottom of the pump body, and the nut cover is fixedly installed on the top outer periphery of the pump body. A main column is provided at the bottom of the push head, and a return spring is sleeved on the outer periphery of the main column. A piston is provided inside the pump body, and a glass bead is embedded and installed at the connection between the pump body and the straw. A discharge channel is provided inside the push head, and the discharge channel is connected to the main column. It can be connected to the inside of the pump body by three-section connection of the push head, the main column and the sub-column, and the product can be quickly sucked out of the bottle with the cooperation of the piston, the return spring, the straw and the glass beads.

[0004] The problem with the above technology is that the user can squeeze out the liquid in the pump body by pressing the button down. The farther the button is pressed down, the greater the amount of liquid squeezed out. At the same time, the capacity of the pump body determines the maximum amount of liquid squeezed out. As the pump body capacity increases, a higher button head is required to match it. In reality, for some height-restricted shelves, cosmetic bottles with higher button heads are difficult to put into the shelves.

[0005] Therefore, a pump head structure is proposed to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a pump head structure, which can pump out more liquid when the head moves the same distance compared with a pump head of the same capacity.

[0007] The technical solution adopted by the utility model to solve the problem is: a pump head structure, including a pump body and a push head, the push head is slidably connected to the top of the pump body, a main column is arranged at the bottom of the push head, a return spring is sleeved on the outer periphery of the main column, the middle part of the main column is hollowed out to form a first accommodating chamber, and the characteristic is: a sub-piston is arranged in the pump body, the sub-piston is dynamically sealed with the pump body, the middle part of the sub-piston is hollowed out to form a second accommodating chamber, the top of the second accommodating chamber is communicated with the main column, a straw is inserted into the bottom of the pump body, a one-way valve is arranged at the connection between the pump body and the straw, and the push head, the main column, the second accommodating chamber and the straw are communicated with each other.

[0008] As a further improvement of the above technical solution, a secondary column is installed in the pump body; one end of the secondary column is fixedly connected to the bottom of the main column, and the other end of the secondary column is fixedly connected to the top of the secondary piston; the middle part of the secondary column is through, and the main column is connected to the secondary piston through the secondary column.

[0009] As a further improvement of the above technical solution, a first protrusion extends outward from the outer periphery of the upper end of the secondary column, the top of the secondary column is inserted into the main column, and the first protrusion abuts against the inner wall of the main column; a second protrusion extends outward from the outer periphery of the lower end of the secondary column, the bottom of the secondary column is inserted into the second accommodating cavity, and the second protrusion abuts against the inner wall of the second accommodating cavity.

[0010] As a further improvement of the above technical solution, the surfaces of the first protrusion and the second protrusion are both arc-shaped surfaces.

[0011] As a further improvement of the above technical solution, the pump body includes an upper pump body and a lower pump body; the bottom outer wall of the upper pump body is provided with an annular groove, and the top inner wall of the lower pump body extends inward with a latch tooth, and the latch tooth is engaged with the annular groove.

[0012] As a further improvement of the above technical solution, the auxiliary piston is dynamically sealed with the lower pump body.

[0013] As a further improvement of the above technical solution, a locking cover is provided on the top of the pump body.

[0014] As a further improvement of the above technical solution, the one-way valve includes a glass bead, and the glass bead is embedded in the connection between the pump body and the suction tube.

[0015] The beneficial effects of the utility model are as follows: before using the pump head, the liquid will fill the first accommodating chamber and the second accommodating chamber, and by pressing the push head, the main column and the auxiliary piston are pushed downward, so that the volume in the pump body is reduced, the pressure is increased, and the liquid will be sprayed out through the push head; after releasing the push head, the push head will be reset under the influence of the reset spring, the volume in the pump body will increase, and negative pressure will be formed. The glass bead will open under the action of the negative pressure, and the liquid in the bottle will enter the first accommodating chamber and the second accommodating chamber through the straw. Compared with the pump head structure of the prior art, under the condition of the same pump body capacity, the present pump head structure can hold more liquid when not in use, and can pump out more liquid when the push head is pressed down the same distance. Therefore, the height of the push head can be designed to be lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 It is a cross-sectional view of the utility model;

[0020] Figure 4 for Figure 3 A partial enlarged view of part A;

[0021] Figure 5 This is a structural diagram of the upper pump body of the utility model;

[0022] Figure 6 It is the structural diagram of the lower pump body of the utility model.

[0023] In the figure: 1-pump body, 11-upper pump body, 12-lower pump body, 13-annular groove, 14-grip, 15-reset spring, 2-button head, 3-main column, 4-auxiliary piston, 41-second accommodating chamber, 5-suction straw, 6-glass bead, 7-auxiliary column, 71-first protrusion, 72-second protrusion, 8-second piston, 9-lock cover. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 6 A pump head structure, comprising a pump body 1 and a push head 2, the push head 2 is slidably connected to the top of the pump body 1, a main column 3 is arranged at the bottom of the push head 2, a return spring 15 is sleeved on the outer periphery of the main column 3, the middle of the main column 3 is hollowed out to form a first accommodating chamber, a secondary piston 4 is arranged in the pump body 1, the secondary piston 4 is dynamically sealed with the pump body 1, the middle of the secondary piston 4 is hollowed out to form a second accommodating chamber 41, the top of the second accommodating chamber 41 is communicated with the main column 3, a suction pipe 5 is inserted at the bottom of the pump body 1, a one-way valve is arranged at the connection between the pump body 1 and the suction pipe 5, the push head 2, the main column 3, the second accommodating chamber 41 and the suction pipe 5 are communicated with each other;

[0029] Before using the pump head, the liquid will fill the first accommodating chamber and the second accommodating chamber 41. By pressing the push head 2, the main column 3 and the auxiliary piston 4 are pushed downward, so that the volume in the pump body 1 is reduced and the pressure is increased, and the liquid will be sprayed out through the push head 2. After releasing the push head 2, the push head 2 will be reset under the influence of the reset spring 15, and the volume in the pump body 1 will increase to form a negative pressure. The glass bead 6 will open under the action of the negative pressure, and the liquid in the bottle will enter the first accommodating chamber and the second accommodating chamber 41 through the straw 5.

[0030] In the preferred embodiment, in order to facilitate the connection between the main column 3 and the auxiliary piston 4, a auxiliary column 7 is installed in the pump body 1; one end of the auxiliary column 7 is fixedly connected to the bottom of the main column 3, and the other end of the auxiliary column 7 is fixedly connected to the top of the auxiliary piston 4; the middle part of the auxiliary column 7 is through, and the main column 3 is connected to the auxiliary piston 4 through the auxiliary column 7.

[0031] In a preferred embodiment, in order to facilitate the installation of the secondary column 7, a first protrusion 71 extends outward from the outer periphery of the upper end of the secondary column 7, and the top of the secondary column 7 is inserted into the main column 3, and the first protrusion 71 abuts against the inner wall of the main column 3; a second protrusion 72 extends outward from the outer periphery of the lower end of the secondary column 7, and the bottom of the secondary column 7 is inserted into the second accommodating cavity 41, and the second protrusion 72 abuts against the inner wall of the second accommodating cavity 41.

[0032] In a preferred embodiment, the surfaces of the first protrusion 71 and the second protrusion 72 are both arc-shaped surfaces.

[0033] In a preferred embodiment, the pump body 1 includes an upper pump body 11 and a lower pump body 12 ; the bottom outer wall of the upper pump body 11 is provided with an annular groove 13 , and the top inner wall of the lower pump body 12 has a latching tooth 14 extending inwardly, and the latching tooth 14 is latched in the annular groove 13 .

[0034] In a preferred embodiment, the auxiliary piston 4 is dynamically sealed with the lower pump body 12 .

[0035] In a preferred embodiment, a locking cover 9 is provided on the top of the pump body 1 .

[0036] In a preferred embodiment, the one-way valve includes a glass bead 6, which is embedded in the connection between the pump body 1 and the suction pipe 5. When the pressure in the pump body 1 decreases, the glass bead 6 will open to connect the suction pipe 5 with the pump body 1. When the pressure in the pump body 1 increases, the glass bead 6 will close to disconnect the suction pipe 5 from the pump body 1.

[0037] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pump head structure, comprising a pump body (1) and a push head (2), wherein the push head (2) is slidably connected to the top of the pump body (1), a main column (3) is arranged at the bottom of the push head (2), a return spring (15) is sleeved on the outer periphery of the main column (3), and the middle part of the main column (3) is hollowed out to form a first accommodating cavity, characterized in that: A secondary piston (4) is arranged in the pump body (1), the secondary piston (4) is dynamically sealed with the pump body (1), the middle of the secondary piston (4) is hollowed out to form a second accommodating chamber (41), the top of the second accommodating chamber (41) is connected to the main column (3), a suction pipe (5) is inserted into the bottom of the pump body (1), a one-way valve is arranged at the connection between the pump body (1) and the suction pipe (5), and the push head (2), the main column (3), the second accommodating chamber (41) and the suction pipe (5) are connected to each other.

2. A pump head structure according to claim 1, characterized in that: A secondary column (7) is installed in the pump body (1); One end of the secondary column (7) is fixedly connected to the bottom of the main column (3), and the other end of the secondary column (7) is fixedly connected to the top of the secondary piston (4); The middle part of the secondary column (7) is through-connected, and the main column (3) is connected to the secondary piston (4) through the secondary column (7).

3. A pump head structure as claimed in claim 2, characterized in that: A first protrusion (71) extends outward from the periphery of the upper end of the secondary column (7); the top of the secondary column (7) is inserted into the main column (3); and the first protrusion (71) abuts against the inner wall of the main column (3); A second protrusion (72) extends outward from the periphery of the lower end of the secondary column (7), the bottom of the secondary column (7) is inserted into the second accommodating cavity (41), and the second protrusion (72) abuts against the inner wall of the second accommodating cavity (41).

4. A pump head structure as claimed in claim 3, characterized in that: The surfaces of the first protrusion (71) and the second protrusion (72) are both arc-shaped surfaces.

5. A pump head structure according to claim 1, characterized in that: The pump body (1) comprises an upper pump body (11) and a lower pump body (12); The bottom outer wall of the upper pump body (11) is provided with an annular groove (13), and the top inner wall of the lower pump body (12) is provided with a latching tooth (14) extending inwardly, and the latching tooth (14) is latched in the annular groove (13).

6. A pump head structure as claimed in claim 5, characterized in that: The auxiliary piston (4) is dynamically sealed with the lower pump body (12).

7. A pump head structure according to claim 1, characterized in that: A locking cover (9) is provided on the top of the pump body (1).

8. A pump head structure according to claim 1, characterized in that: The one-way valve comprises a glass ball (6), and the glass ball (6) is embedded in the connection between the pump body (1) and the suction pipe (5).

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