Pressing pump with simplified liquid suction structure

Abstract

The utility model relates to a pressing pump, in particular to a pressing pump with a simplified liquid suction structure, which comprises a pump body, and the pump body comprises a pressing head, a liquid outlet channel, a liquid inlet and a liquid outlet, the upper portion of the communicating piece is fixedly connected with the pressing head, an inner cavity is formed in the lower portion of the communicating piece, and a first one-way valve, a third connecting part and a flexible connecting part are arranged in the communicating piece; the inner cavity can communicate with the liquid outlet channel through the first one-way valve, and when the pressing head presses the communicating piece downwards, the flexible connecting part can be extruded to deform; the lower portion of the communicating piece is connected with the lock cover, a lower cavity is formed in the middle of the lock cover, a second one-way valve is arranged on the lock cover, and the lower cavity can be communicated with the inner cavity through the second one-way valve. The third connecting part and the flexible connecting part achieve the effect of a variable-volume liquid suction part in the prior art, the first one-way valve achieves the effect of a glass ball in the prior art, the second connecting part achieves the effect of a main column in the prior art, the characteristics are integrated on the communicating part, and the effects of simplifying the structure and facilitating installation are achieved.

Description

Technical Field

[0001] The utility model relates to a pressing pump, in particular to a pressing pump with a simplified liquid suction structure. Background Art

[0002] Existing press pumps are generally composed of a locking bottle cap, a pump chamber, a pressing head, a main column, a secondary column, a piston, a glass bead, a rebound device and a locking cap that fixes the main column, secondary column and piston to the pump chamber. This type of press pump has many parts, a relatively complex structure and is difficult to assemble.

[0003] For example, a positive displacement lotion pump disclosed in the application of the present applicant and publication number CN106428966B comprises a push-button, a locking cover, a screw thread, a main column, a glass ball, a body, and a straw arranged at the lower end of the body. The push-button comprises a liquid outlet nozzle, an interface tube, and an outer sleeve; the locking cover comprises a cover body with a lower opening and a main column guide tube passing through the center of the cover body; a flange is provided at the upper end of the body, an interface is provided at the upper part of the flange, and a liquid inlet hole and a straw interface are provided at the bottom; the main column comprises an upper joint part, a middle guide part, and a lower connecting part, and the bottom of the upper joint part is provided with a glass ball. The seat, the upper joint part is inserted into the interface tube part, the interface tube part of the pressing head and the middle guide part of the main column are slidably matched with the main column guide tube; it also includes a variable volume liquid absorption part and a valve chip, the variable volume liquid absorption part is hollow with an upper opening and a through hole on the bottom plate, the valve chip is arranged in the through hole, and the valve chip and the through hole are connected by a connecting rib; the variable volume liquid absorption part, the valve chip and the connecting rib are made of plastic or rubber material; the upper end of the variable volume liquid absorption part is fixedly connected to the lower connecting part and is liquid-gas sealed, the lower end is fixedly connected to the bottom plate of the body and is liquid-gas sealed, and the valve chip is matched with the liquid inlet hole.

[0004] The pressing pump of the above technology has many parts and a relatively complex liquid suction structure, and there is a certain space for simplification of the liquid suction structure. 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 with a simplified liquid suction structure.

[0006] The technical solution adopted by the present invention to solve the problem is: a pressing pump with a simplified liquid suction structure, including a pump body, the pump body including: a pressing head, a liquid outlet channel provided in the pressing head; a connecting piece, the upper part of the connecting piece is fixedly connected to the pressing head, the lower part of the connecting piece is provided with an inner cavity, the connecting piece is provided with a first one-way valve, a third connecting part and a flexible connecting part; the inner cavity can be connected with the liquid outlet channel through the first one-way valve, and when the pressing head presses the connecting piece downward, the flexible connecting part can be squeezed and deformed; a locking cover, the lower part of the connecting piece is connected to the locking cover, a lower cavity is provided in the middle of the locking cover, a second one-way valve is provided on the locking cover, and the lower cavity can be connected with the inner cavity through the second one-way valve.

[0007] As a further improvement of the above technical solution, the push head is provided with a first connecting part, and an internal fixing part is provided in the first connecting part; the connecting part includes a second connecting part, a first liquid inlet pipe and a third connecting part; the first one-way valve is provided at the top of the first liquid inlet pipe; the second connecting part is provided at the upper end of the first liquid inlet pipe and is fixedly connected to the internal fixing part; the flexible connecting part is provided at the lower end of the first liquid inlet pipe, the third connecting part is provided at the lower end of the flexible connecting part, and an external thread is provided on the outer wall of the third connecting part; the locking cover is provided with a second liquid inlet pipe, the second one-way valve is provided at the top of the second liquid inlet pipe, and an internal thread is provided on the inner wall of the lower cavity, and the internal thread is threadedly connected to the external thread.

[0008] As a further improvement of the above technical solution, an extension portion is provided at the lower end of the first liquid inlet pipe, the extension portion is communicated with the inner cavity, and the extension portion is provided above the second liquid inlet pipe.

[0009] As a further improvement of the above technical solution, a longitudinal notch is provided on the extension portion.

[0010] As a further improvement of the above technical solution, the pump body has an unlocked state and a locked state; a plug-in strip is provided on the outer wall of the first connecting part, and a step and a strip groove are provided on the inner wall of the lower cavity; when the push head is rotated, when the plug-in strip is aligned with the strip groove, the pump body is in an unlocked state; when the push head is rotated, when the plug-in strip is located on the step, the pump body is in a locked state.

[0011] As a further improvement of the above technical solution, an air supply hole is provided on the step, and when the pump body is in a locked state, the plug-in strip is blocked above the air supply hole.

[0012] As a further improvement of the above technical solution, the step includes a first spiral step and a second spiral step connected head to tail, and the strip groove is arranged at the head to tail connection of the first spiral step and the second spiral step; the first spiral step and the second spiral step are both provided with air supply holes, and the air supply holes are arranged at the ends of the first spiral step and the second spiral step.

[0013] As a further improvement of the above technical solution, the first spiral step and the second spiral step spirally rise in a counterclockwise direction, and the air supply hole is arranged at the lowest end of the first spiral step and the second spiral step; a limiting portion is also provided at the lowest end of the first spiral step and the second spiral step, and the limiting portion is provided on one side of the air supply hole, and the limiting portion is used to limit the pressing head from continuing to rotate in the counterclockwise direction.

[0014] The beneficial effects of the present utility model are as follows: the third connecting part and the flexible connecting part achieve the effect of the variable volume liquid-absorbing part in the prior art, the first one-way valve achieves the effect of the glass ball in the prior art, and the second connecting part achieves the effect of the main column in the prior art. The above features are integrated into the connecting part, thereby achieving the effect of simplifying the structure and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the optimal structure decomposition of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the push button of the utility model;

[0018] Figure 3 This is a structural diagram of the connecting piece of the utility model;

[0019] Figure 4 This is a cross-sectional view of the structure of the connecting piece of the utility model;

[0020] Figure 5 This is one of the structural diagrams of the lock cover of the utility model;

[0021] Figure 6 This is the second structural diagram of the lock cover of the utility model;

[0022] Figure 7 This is a structural cross-sectional view of the pump body of the utility model when it is in an unlocked state;

[0023] Figure 8 This is a structural cross-sectional view of the pump body of the utility model when it is in a locked state;

[0024] In the figure: 1-press head, 11-liquid outlet channel, 12-first connecting part, 121-inner fixing part, 13-plug-in strip, 2-connecting piece, 20-inner cavity, 21-second connecting part, 22-first one-way valve, 23-third connecting part, 231-external thread, 24-flexible connecting part, 25-extension part, 26-notch, 27-first liquid inlet pipe, 3-locking cover, 31-lower cavity, 311-first spiral step, 312-second spiral step, 313-strip groove, 314-limiting part, 315-inner thread, 32-connecting cap, 33-second one-way valve, 34-air replenishing hole, 35-second liquid inlet pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0028] 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.

[0029] Reference Figures 1 to 8, a pressing pump with a simplified liquid suction structure includes a pump body, which has an unlocked state and a locked state. The pump body includes: a pressing head 1, on which a first connecting part 12 is provided, and an internal fixing part 121 is provided in the first connecting part 12; a connecting piece 2, which includes an integrally arranged second connecting part 21, a first one-way valve 22, a third connecting part 23, a flexible connecting part 24 and a first liquid inlet pipe 27, the first one-way valve 22 is provided at the top of the first liquid inlet pipe 27, the second connecting part 21 is provided at the upper end of the first liquid inlet pipe 27 and is fixedly connected to the internal fixing part 121, the first liquid inlet pipe 27 is connected to the liquid outlet channel 11 of the pressing head 1; the third connecting part 23 is fixedly connected to the lower end of the first liquid inlet pipe 27 through the flexible connecting part 24, The third connecting part 23 and the flexible connecting part 24 enclose an inner cavity 20 with an opening facing downward, and an external thread 231 is provided on the outer wall of the third connecting part 23; the locking cover 3, the middle part of the locking cover 3 is provided with a lower cavity 31, the middle part of the lower cavity 31 is provided with a second liquid inlet pipe 35 connected to the first liquid inlet pipe 27, and the top of the second liquid inlet pipe 35 is provided with a second one-way valve 33, the first liquid inlet pipe 27 is located directly above the second one-way valve 33, the inner side wall of the lower cavity 31 is provided with an internal thread 315, the internal thread 315 is screwed with the external thread 231, and a nut is also provided on the outer periphery of the locking cover 3, and the connecting cap 32 is used to connect with the bottle body (not shown).

[0030] Working principle: downward pressure is applied to the press head 1, the flexible connecting part 24 on the connecting piece 2 is deformed downward, the volume of the inner cavity 20 is reduced, and the liquid in the inner cavity 20 passes upward through the first liquid inlet pipe 27 and the first one-way valve 22, and finally discharged from the liquid outlet channel 11 on the press head 1; when the pressure on the press head 1 is removed, the flexible connecting part 24 on the connecting piece 2 elastically recovers, the volume of the inner cavity 20 increases, the pressure in the inner cavity 20 decreases, and the liquid in the bottle body flows upward into the inner cavity 20 along the second liquid inlet pipe 35 and the second one-way valve 33.

[0031] In a preferred embodiment, the push head is integrally provided, the connecting piece is integrally provided, and the locking cover is integrally provided.

[0032] In a preferred embodiment, an extension portion 25 is provided at the lower end of the first liquid inlet pipe 27, the extension portion 25 is communicated with the first liquid inlet pipe 27, and the extension portion 25 extends into the inner cavity 20; the extension portion 25 is communicated with the inner cavity 20, and the extension portion 25 is provided above the second liquid inlet pipe.

[0033] In a preferred embodiment, a longitudinal notch 26 is provided on the extension portion 25. When the extension portion 25 abuts against the upper end of the second one-way valve 33, the extension portion 25 can continue to press downward to prevent the stroke from being too short.

[0034] In a preferred embodiment, a plug-in strip 13 is provided on the outer wall of the first connecting portion 12, and a step and a strip groove 313 are provided on the inner wall of the lower cavity 31; when the push head 1 is rotated, when the plug-in strip 13 is aligned with the strip groove 313, the pump body is in an unlocked state, and at this time, the plug-in strip 13 can move up and down in the strip groove 313; when the push head 1 is rotated, when the plug-in strip 13 is located on the step, the pump body cannot be pressed down, and the pump body is in a locked state.

[0035] In a preferred embodiment, an air supply hole 34 is provided on the locking cover 3 , and the air supply hole 34 is located on the step. When the pump body is in a locked state, the plug-in strip 13 blocks the top of the air supply hole 34 .

[0036] In some embodiments, the steps include a first spiral step 311 and a second spiral step 312 that are connected head to tail and rotationally symmetrical, and the strip groove 313 is arranged at the head-to-tail connection of the first spiral step 311 and the second spiral step 312; the first spiral step 311 and the second spiral step 312 are both provided with an air supply hole 34, and the air supply hole 34 is arranged at the ends of the first spiral step 311 and the second spiral step 312.

[0037] In a preferred embodiment, the first spiral step 311 and the second spiral step 312 spirally rise in a counterclockwise direction, and the air supply hole 34 is arranged at the lowest end of the first spiral step 311 and the second spiral step 312; a limiting portion 314 is also provided at the lowest end of the first spiral step 311 and the second spiral step 312, and the limiting portion 314 is provided on one side of the air supply hole 34, and the limiting portion 314 is used to limit the pressing head 1 from continuing to rotate in the counterclockwise direction. Rotate the push head 1 counterclockwise, and the push head 1 spirals up along the steps. When the push head 1 rotates to the highest point and continues to rotate a certain angle, the plug-in strip 13 falls into the strip groove 313, and the pump body is in an unlocked state. Rotate the push head 1 clockwise, and the push head 1 spirals down along the steps. When the push head 1 rotates to the lowest point and abuts against the side of the limit portion 314, the push head 1 cannot continue to rotate. At this time, the plug-in strip 13 is located directly above the air supply hole 34 and blocks the air supply hole 34, and the pump body is in a locked state.

[0038] 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 with a simplified liquid suction structure, comprising a pump body, characterized in that: The pump body comprises: A pressing head (1), wherein a liquid outlet channel (11) is provided in the pressing head (1); A connecting piece (2), wherein the upper portion of the connecting piece (2) is fixedly connected to the pressing head (1), and the lower portion of the connecting piece (2) is provided with an inner cavity (20), and the connecting piece (2) is provided with a first one-way valve (22), a third connecting portion (23) and a flexible connecting portion (24); the inner cavity (20) can be connected to the liquid outlet channel (11) through the first one-way valve (22), and when the pressing head (1) presses the connecting piece (2) downward, the flexible connecting portion (24) can be squeezed and deformed; A locking cover (3), wherein the lower portion of the connecting member (2) is connected to the locking cover (3), a lower cavity (31) is provided in the middle portion of the locking cover (3), a second one-way valve (33) is provided on the locking cover (3), and the lower cavity (31) can be connected to the inner cavity (20) through the second one-way valve (33).

2. A press pump with a simplified liquid suction structure according to claim 1, characterized in that: The pressing head (1) is provided with a first connecting portion (12), and an inner fixing portion (121) is provided inside the first connecting portion (12); The connecting member (2) comprises a second connecting portion (21), a first liquid inlet pipe (27) and a third connecting portion (23); the first one-way valve (22) is arranged at the top of the first liquid inlet pipe (27); the second connecting portion (21) is arranged at the upper end of the first liquid inlet pipe (27) and is fixedly connected to the inner fixing portion (121); the flexible connecting portion (24) is arranged at the lower end of the first liquid inlet pipe (27), the third connecting portion (23) is arranged at the lower end of the flexible connecting portion (24), and an external thread (231) is provided on the outer wall of the third connecting portion (23); The locking cover (3) is provided with a second liquid inlet pipe (35), the second one-way valve (33) is provided on the top of the second liquid inlet pipe, and an internal thread (315) is provided on the inner side wall of the lower cavity (31), and the internal thread (315) is screwed to the external thread (231).

3. A press pump with a simplified liquid suction structure according to claim 2, characterized in that: An extension portion (25) is provided at the lower end of the first liquid inlet pipe (27), the extension portion (25) is communicated with the inner cavity (20), and the extension portion (25) is provided above the second liquid inlet pipe.

4. A press pump with a simplified liquid suction structure according to claim 3, characterized in that: The extension portion (25) is provided with a longitudinally arranged notch (26).

5. The press pump with a simplified liquid suction structure according to claim 2, characterized in that: The pump body has an unlocked state and a locked state; A plug-in strip (13) is provided on the outer side wall of the first connecting portion (12), and a step and a strip-shaped groove (313) are provided on the inner side wall of the lower cavity (31); The push head (1) is rotated, and when the plug-in strip (13) is aligned with the strip-shaped groove (313), the pump body is in an unlocked state; The push head (1) is rotated, and when the plug-in strip (13) is located on the step, the pump body is in a locked state.

6. The press pump with a simplified liquid suction structure according to claim 5, characterized in that: An air supply hole (34) is provided on the step, and when the pump body is in a locked state, the plug-in strip (13) blocks the upper portion of the air supply hole (34).

7. The press pump with a simplified liquid suction structure according to claim 6, characterized in that: The step comprises a first spiral step (311) and a second spiral step (312) connected head to tail, and the strip groove (313) is provided at the connection between the first spiral step (311) and the second spiral step (312); The first spiral step (311) and the second spiral step (312) are both provided with air supply holes (34), and the air supply holes (34) are provided at the ends of the first spiral step (311) and the second spiral step (312).

8. The press pump with a simplified liquid suction structure according to claim 7, characterized in that: The first spiral step (311) and the second spiral step (312) spirally ascend in a counterclockwise direction, and the air supply hole (34) is arranged at the lowest end of the first spiral step (311) and the second spiral step (312); A limiting portion (314) is further provided at the lowest end of the first spiral step (311) and the second spiral step (312). The limiting portion (314) is provided on one side of the air supply hole (34). The limiting portion (314) is used to limit the pressing head (1) from continuing to rotate in the counterclockwise direction.

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