Pressing pump capable of reducing liquid overflowing amount of pump head

Abstract

The utility model relates to a pressing pump, in particular to a pressing pump capable of reducing the overflow amount of a pump head, which comprises a pump head assembly, a body and a thread cover, the thread cover is fixedly connected to the body, and a cavity is formed between the thread cover and the body; a pressing cavity with an opening in the upper end is formed in the middle of the body, the pump head assembly is movably connected into the pressing cavity, a gap is formed between the pump head assembly and the inner wall of the pressing cavity and communicated with the external environment, and a communicating channel is formed in the side wall of the body and enables the cavity and the gap to be communicated. The communication channel is arranged on the side wall of the body, the cavity is communicated with the gap through the communication channel, then the bottle body is communicated with the external environment, when the pressure in the bottle body is increased, the pressure in the bottle body can be balanced through the communication channel, and the liquid overflowing amount of the pump head is reduced.

Description

Technical Field

[0001] The utility model relates to a press pump, in particular to a press pump capable of reducing the amount of liquid overflow from a pump head. Background Art

[0002] The press pump includes a main body, a pump head assembly and a screw cover. The pump head assembly includes a pump head. The screw cover is fixedly connected to the main body. The screw cover is used to be screwed to the bottle body. There is a cavity between the screw cover and the main body. After the press pump is assembled with the bottle body, the cavity is located in the bottle body and connected to the inside of the bottle body; the middle part of the main body is hollowed out to form a press cavity with an open upper end, and the pump head assembly is movably connected in the press cavity.

[0003] However, the existing compression pump lacks a structure to balance the internal pressure of the bottle. After the pump head assembly is started (unlocked), the pressure inside the bottle increases due to high temperature or squeezing of the bottle, and the liquid in the pump head assembly is likely to overflow from the pump head.

[0004] Therefore, there is an urgent need for a compression pump that can reduce the amount of liquid overflow from the pump head. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the present utility model is to provide a press pump that can reduce the amount of liquid overflow from the pump head.

[0006] The technical solution adopted by the present invention to solve the problem is: a press pump capable of reducing the amount of liquid overflow from a pump head, comprising a pump head assembly, a body and a screw cover; the screw cover is fixedly connected to the body, and a cavity is provided between the screw cover and the body; a press cavity with an upper end opening is provided in the middle of the body, the pump head assembly is movably connected in the press cavity, a gap is provided between the pump head assembly and the inner wall of the press cavity, the gap is communicated with the external environment, a connecting channel is provided on the side wall of the body, and the connecting channel connects the cavity and the gap.

[0007] As a further improvement of the above technical solution, the main body includes a liquid inlet column and an inner stud, the inner stud is fixedly connected to the upper end of the liquid inlet column and is close to the inner side wall of the liquid inlet column; the lower end of the inner stud is provided with a first notch, and the side wall of the liquid inlet column is provided with a second notch, the first notch and the second notch are connected to form the connecting channel.

[0008] As a further improvement of the above technical solution, the height of the second notch is higher than that of the first notch.

[0009] As a further improvement of the above technical solution, a piston is fixedly connected to the lower end of the pump head assembly, and the communication channel is always located above the piston.

[0010] The beneficial effect of the utility model is that the utility model provides a connecting channel on the side wall of the main body, and the connecting channel connects the cavity and the gap, thereby connecting the bottle body with the external environment. When the pressure in the bottle body increases, the pressure in the bottle body can be balanced through the connecting channel, thereby reducing the overflow of the pump head. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further explained below with reference to the accompanying drawings and specific implementation methods.

[0012] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle;

[0014] Figure 3 It is a schematic diagram of the structural decomposition of the main body of the utility model;

[0015] In the figure: 1-body, 11-inner stud, 111-first notch, 112-inner thread, 12-liquid inlet column, 121-second notch, 13-connecting channel, 2-pump head assembly, 21-piston, 22-external thread, 3-screw cover, 41-cavity, 42-gap. DETAILED DESCRIPTION

[0016] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention 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 overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that descriptions involving orientations, 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. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0018] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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.

[0019] Reference Figures 1 to 3, a press pump capable of reducing the amount of liquid overflow from the pump head, having an unlocked state and a locked state, comprising a pump head assembly 2, a body 1 and a screw cover 3, the screw cover 3 being used to be fixedly connected to the bottle body, an internal thread 112 being provided on the inner wall of the body 1, and an external thread 22 being provided on the outer wall of the pump head assembly 2, when the press pump is in the locked state, the internal thread 112 is screwed with the external thread 22, when the press pump is unlocked, the internal thread 112 is disengaged from the external thread 22, the pump head assembly 2 rises, and then converted to the unlocked state; the screw cover 3 is fixedly connected to the body 1, and there is a gap between the screw cover 3 and the body 1 It has a cavity 41, which is connected to the inside of the bottle body; a pressing cavity with an upper opening is provided in the middle of the body 1, and the pump head assembly 2 is movably connected up and down in the pressing cavity. There is a gap 42 between the pump head assembly 2 and the inner wall of the pressing cavity, and the gap 42 is connected to the external environment. A connecting channel 13 is provided on the side wall of the body 1, and the connecting channel 13 connects the cavity 41 and the gap 42. When the pump head assembly 2 starts pumping (i.e., unlocked state), the high temperature or squeeze of the bottle body, the air pressure in the bottle body is balanced through the connecting channel 13, thereby reducing the overflow of the pump head. The pressure equalization process can be referred to Figure 1 The line pointed by the arrow.

[0020] In some embodiments, the main body 1 includes a liquid inlet column 12 and an inner stud 11, the inner stud 11 is fixedly connected to the upper end of the liquid inlet column 12 and is close to the inner side wall of the liquid inlet column 12, and the internal thread 112 is arranged on the inner stud 11; the lower end of the inner stud 11 is provided with a first notch 111, and the side wall of the liquid inlet column 12 is provided with a second notch 121, the first notch 111 and the second notch 121 are connected, and the first notch 111 and the second notch 121 together form the connecting channel 13.

[0021] In a preferred embodiment, the height of the second notch 121 is higher than that of the first notch 111 , thereby reducing the amount of liquid in the bottle entering the communication channel 13 through the second notch 121 .

[0022] In some embodiments, a piston 21 is fixedly connected to the lower end of the pump head assembly 2 . When the pump is in an unlocked state, the piston 21 abuts against the bottom of the inner stud 11 , and the connecting channel 13 is always located above the piston 21 .

[0023] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by 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 press pump capable of reducing the amount of liquid overflow from a pump head, comprising a pump head assembly (2), a body (1) and a screw cover (3); the screw cover (3) is fixedly connected to the body (1), and a cavity (41) is provided between the screw cover (3) and the body (1); a press chamber with an upper end opening is provided in the middle of the body (1), the pump head assembly (2) is movably connected in the press chamber, a gap (42) is provided between the pump head assembly (2) and the inner wall of the press chamber, and the gap (42) is communicated with the external environment, characterized in that: A communication channel (13) is provided on the side wall of the body (1), and the communication channel (13) connects the cavity (41) and the gap (42).

2. A push pump capable of reducing the amount of liquid overflow from a pump head according to claim 1, characterized in that: The body (1) comprises a liquid inlet column (12) and an inner stud (11), wherein the inner stud (11) is fixedly connected to the upper end of the liquid inlet column (12) and is closely attached to the inner side wall of the liquid inlet column (12); A first notch (111) is provided at the lower end of the inner screw (11), and a second notch (121) is provided on the side wall of the liquid inlet column (12); the first notch (111) and the second notch (121) are connected to form the connecting channel (13).

3. A push pump capable of reducing the amount of liquid overflow from a pump head according to claim 2, characterized in that: The height of the second notch (121) is higher than the height of the first notch (111).

4. A push pump capable of reducing the amount of liquid overflow from a pump head according to claim 1, characterized in that: The lower end of the pump head assembly (2) is fixedly connected to a piston (21), and the communication channel (13) is always located above the piston (21).

Images