A hand pump, container

Abstract

The utility model discloses a kind of manual pump, container, and manual pump includes pump cover, liquid outlet head and liquid suction pipe, pump cover is fixed on the outer wall of liquid suction pipe;It further includes connecting cylinder, movable cylinder, elastic member, first intermediate column and first wave pearl;The top of connecting cylinder is located in the bottom cavity of liquid outlet head, and is in abutment with the convex in the bottom cavity of liquid outlet head;The bottom of connecting cylinder and movable cylinder are located in liquid suction pipe, the inner wall of the bottom of connecting cylinder and the top outer wall of movable cylinder are clamped;Elastic member is located in liquid suction pipe, its top and the bottom of movable cylinder are in abutment, its bottom is fixed in the bottom of liquid suction pipe;First necked opening for limiting first wave pearl is equipped on the inner wall of connecting cylinder, and first wave pearl is equipped on first necked opening;The bottom of first intermediate column is fixed in the bottom of liquid suction pipe, and its top is located in connecting cylinder. The utility model can retract excess liquid into pipe, prevent liquid surplus from liquid outlet nozzle.

Description

Technical Field

[0001] This utility model relates to the field of manual pump technology, and in particular to a manual pump and container. Background Technology

[0002] In the fields of daily chemicals, cosmetics, and household cleaning, push-button manual pumps are widely used in containers such as shampoo bottles, shower gel bottles, and cosmetic bottles due to their convenient operation and controllable liquid dispensing. Existing technologies have addressed the issues of sealing and compatibility with oily liquids in push-button pumps with relevant improvements. For example, Chinese utility model patent CN207607812U, "A Push-Button Pump Head and a Bottle Including a Push-Button Pump Head," discloses a push-button pump head using a nitrile rubber piston. By utilizing the flexibility and oil-swelling resistance of nitrile rubber, it solves the problems of deformation and decreased sealing performance of traditional PE pistons after immersion in oily liquids. Simultaneously, it reduces the dimensional accuracy requirements for the piston-pump body fit, thus optimizing the pressing feel and production costs to some extent.

[0003] However, the aforementioned prior art still has unresolved technical defects: the press pump head of the patented technology only uses a one-way valve (ball bearing / wave) to connect and disconnect the suction tube from the pump body cavity. During the pressing action and the process of the elastic component driving the pump neck to reset, the wave bearing, affected by the pressure change in the pump body cavity, will quickly reset and close the conical port. This causes the residual liquid in the pump neck cavity and the liquid outlet channel to backflow due to the loss of pressure support, and some residual liquid will also drip from the outlet nozzle. This problem not only causes liquid waste, but may also contaminate the outer wall of the container or the usage environment due to dripping. This is especially true for high-viscosity cosmetics such as serums and essential oils, where the product loss and hygiene problems caused by dripping are more prominent.

[0004] Therefore, existing push-button pump heads have limitations in preventing residual liquid backflow and dripping, and there is an urgent need for a manual pump solution that can extend the closing time of the one-way valve and simultaneously solve the problems of residual liquid backflow and dripping. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a manual pump and container that can retract excess liquid into the tube and prevent excessive liquid from dripping out of the nozzle.

[0006] To solve the above-mentioned technical problems, the first aspect of this utility model discloses a manual pump, including a pump sleeve (1), a liquid outlet (2) and a liquid suction pipe (3), wherein the pump sleeve (1) is fixed on the outer wall of the liquid suction pipe (3); it also includes a connecting cylinder (4), a movable cylinder (5), an elastic element (6), a first intermediate column (7) and a first ball bearing (8). The top of the connecting cylinder (4) is located in the bottom cavity of the liquid outlet head (2) and abuts against the protrusion in the bottom cavity of the liquid outlet head (2); the bottom of the connecting cylinder (4) and the movable cylinder (5) are located in the suction tube (3), and the bottom inner wall of the connecting cylinder (4) is engaged with the top outer wall of the movable cylinder (5). The elastic element (6) is disposed inside the suction tube (3), with its top abutting against the bottom of the movable cylinder (5) and its bottom fixed to the bottom of the suction tube (3); The inner wall of the connecting cylinder (4) is provided with a first constriction (81) for limiting the first ball (8), and the first ball (8) is provided on the first constriction (81); The bottom of the first intermediate column (7) is fixed to the bottom of the suction tube (3), and its top is located inside the connecting tube (4).

[0007] As an optional implementation, a second intermediate column (9) is also included; the top of the second intermediate column (9) is fixed to the inner wall of the top of the liquid outlet head (2), the inner wall being located above the connecting cylinder (4), and the bottom of the second intermediate column (9) is used to limit the first bead (8).

[0008] As another optional implementation, a second bead (10) is also included; the second bead (10) is disposed on the bottom inlet hole of the suction tube (3), and the diameter of the bottom inlet hole is smaller than the diameter of the second bead (10).

[0009] As another optional implementation, the bottom inner cavity of the suction tube (3) is provided with a second constriction (31); the bottom of the elastic member (6) abuts against the top surface of the second constriction (31).

[0010] As another alternative implementation, a fixing block (311) is provided in the diameter direction of the second constriction (31), and the bottom of the first intermediate column (7) is fixed on the fixing block (311).

[0011] As another alternative implementation, the elastic element (6) is a spring, and the body of the first intermediate post (7) passes through the inner cavity of the spring.

[0012] As another alternative implementation, the movable cylinder (5) has a vertical range of motion within the suction tube (3), and within this range of motion, the bottom of the movable cylinder (5) only abuts against the elastic member (6).

[0013] As another optional implementation, an annular sealing ring is provided between the bottom inner wall of the connecting cylinder (4) and the top outer wall of the movable cylinder (5); the inner wall of the annular sealing ring is close to the outer wall of the movable cylinder (5), and the outer wall is close to the inner wall of the connecting cylinder (4), for sealing the gap between the two.

[0014] The second aspect of this utility model discloses a container, including a container body and a manual pump installed at the mouth of the container, wherein the manual pump is the manual pump described in the first aspect of this utility model.

[0015] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: This embodiment of the invention utilizes the structure of the first intermediate column. When the dispensing head is pressed, the connecting cylinder moves downward with the dispensing head, and the first intermediate column can hold the first wave ball, preventing the first wave ball from quickly settling and closing the first constriction. During reset, the first intermediate column can still briefly support the first wave ball, causing residual liquid in the connecting cylinder and dispensing channel to flow back to the suction pipe, avoiding the technical defect of excessive residual liquid dripping due to rapid closure of the wave ball. The dual positioning structure, with the top of the connecting cylinder abutting against the protrusion in the bottom cavity of the dispensing head and the bottom engaging with the movable cylinder, ensures that the dispensing head, connecting cylinder, and movable cylinder move synchronously during pressing, avoiding pumping failure caused by component misalignment. The elastic element provides a stable reset force, ensuring consistent dispensing during continuous pressing. The first wave ball cooperates with the first constriction on the inner wall of the connecting cylinder to form a one-way sealing structure, preventing liquid in the connecting cylinder from flowing back to the suction pipe when pumped out, laying the foundation for subsequent sealing optimization (such as an annular sealing ring). Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural schematic diagram of a manual pump disclosed in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of a manual pump disclosed in an embodiment of this utility model; Figure 3 This is a partial structural schematic diagram of a manual pump disclosed in an embodiment of the present utility model; Figure 4 This is a schematic diagram of another part of the structure of a manual pump disclosed in an embodiment of this utility model; Figure 5 This is a schematic diagram of another part of the structure of a manual pump disclosed in an embodiment of this utility model; Figure 6 This is a schematic diagram of another part of the structure of a manual pump disclosed in an embodiment of this utility model; Figure 7 This is a schematic diagram of another part of the structure of a manual pump disclosed in an embodiment of this utility model. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 See Figures 1-7 This utility model discloses a manual pump, including a pump sleeve (1), a liquid outlet (2) and a liquid suction pipe (3), wherein the pump sleeve (1) is fixed on the outer wall of the liquid suction pipe (3); it also includes a connecting cylinder (4), a movable cylinder (5), an elastic element (6), a first intermediate column (7) and a first ball bearing (8); The top of the connecting cylinder (4) is located in the bottom cavity of the liquid outlet head (2) and abuts against the protrusion in the bottom cavity of the liquid outlet head (2); the bottom of the connecting cylinder (4) and the movable cylinder (5) are located in the suction tube (3), and the bottom inner wall of the connecting cylinder (4) is engaged with the top outer wall of the movable cylinder (5). The elastic element (6) is disposed inside the suction tube (3), with its top abutting against the bottom of the movable cylinder (5) and its bottom fixed to the bottom of the suction tube (3); The inner wall of the connecting cylinder (4) is provided with a first constriction (81) for limiting the first ball (8), and the first ball (8) is provided on the first constriction (81); The bottom of the first intermediate column (7) is fixed to the bottom of the suction tube (3), and its top is located inside the connecting tube (4).

[0020] In this embodiment of the utility model, through the structure of the first intermediate column (7), when the liquid outlet head (2) is pressed, the connecting cylinder (4) moves downward with the liquid outlet head (2), and the first intermediate column (7) can hold the first bead (8) in place, preventing the first bead (8) from quickly closing the first constriction (81). When resetting, the first intermediate column (7) can still briefly support the first bead (8), causing the residual liquid in the connecting cylinder (4) and the liquid outlet channel to flow back to the suction tube (3), avoiding the technical defect of excessive dripping of residual liquid caused by the rapid closing of the bead; the top of the connecting cylinder (4) and the liquid outlet head (2) The dual positioning structure of the bottom cavity protruding and engaging with the movable cylinder (5) ensures that the liquid outlet head (2), connecting cylinder (4), and movable cylinder (5) move synchronously when pressed, avoiding pump failure caused by component misalignment; the elastic element (6) provides stable reset force to ensure consistent liquid output when pressed continuously; the first wave ball (8) cooperates with the first constriction (81) on the inner wall of the connecting cylinder (4) to form a one-way sealing structure, preventing the liquid in the connecting cylinder (4) from flowing back to the suction pipe (3) when the pump is pressed, laying the foundation for subsequent sealing optimization (such as an annular sealing ring).

[0021] Optionally, a second intermediate column (9) is also included; the top of the second intermediate column (9) is fixed to the inner wall of the top of the liquid outlet head (2), the inner wall being located above the connecting cylinder (4), and the bottom of the second intermediate column (9) is used to limit the first bead (8).

[0022] Optionally, a second bead (10) is also included; the second bead (10) is disposed on the bottom inlet hole of the suction tube (3), and the diameter of the bottom inlet hole is smaller than the diameter of the second bead (10).

[0023] Optionally, the bottom inner cavity of the suction tube (3) is provided with a second constriction (31); the bottom of the elastic member (6) abuts against the top surface of the second constriction (31).

[0024] Optionally, a fixing block (311) is provided in the diameter direction of the second constriction (31), and the bottom of the first intermediate column (7) is fixed on the fixing block (311).

[0025] Optionally, the elastic element (6) is a spring, and the body of the first intermediate post (7) passes through the inner cavity of the spring.

[0026] Optionally, the movable cylinder (5) has a vertical range of motion within the suction tube (3), and within this range of motion, the bottom of the movable cylinder (5) only abuts against the elastic member (6).

[0027] Optionally, an annular sealing ring (not shown in the figure) is provided between the bottom inner wall of the connecting cylinder (4) and the top outer wall of the movable cylinder (5); the inner wall of the annular sealing ring is in close contact with the outer wall of the movable cylinder (5), and the outer wall is in close contact with the inner wall of the connecting cylinder (4), for sealing the gap between the two.

[0028] Example 2 This utility model discloses a container, including a container body and a manual pump installed at the mouth of the container, wherein the manual pump is the manual pump described in Embodiment 1.

[0029] The contents disclosed in this utility model embodiment are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A manual pump, comprising a pump sleeve (1), a liquid outlet (2), and a suction pipe (3), wherein the pump sleeve (1) is fixed to the outer wall of the suction pipe (3); characterized in that, It also includes a connecting cylinder (4), a movable cylinder (5), an elastic element (6), a first intermediate column (7), and a first ball bearing (8); The top of the connecting cylinder (4) is located in the bottom cavity of the liquid outlet head (2) and abuts against the protrusion in the bottom cavity of the liquid outlet head (2). The bottom of the connecting cylinder (4) and the movable cylinder (5) are located inside the suction tube (3), and the bottom inner wall of the connecting cylinder (4) is engaged with the top outer wall of the movable cylinder (5). The elastic element (6) is disposed inside the suction tube (3), with its top abutting against the bottom of the movable cylinder (5) and its bottom fixed to the bottom of the suction tube (3); The inner wall of the connecting cylinder (4) is provided with a first constriction (81) for limiting the first ball (8), and the first ball (8) is provided on the first constriction (81); The bottom of the first intermediate column (7) is fixed to the bottom of the suction tube (3), and its top is located inside the connecting tube (4).

2. The manual pump according to claim 1, characterized in that, It also includes a second intermediate column (9); the top of the second intermediate column (9) is fixed to the inner wall of the top of the liquid outlet head (2), the inner wall being located above the connecting cylinder (4), and the bottom of the second intermediate column (9) is used to limit the first bead (8).

3. The manual pump according to claim 1, characterized in that, It also includes a second bead (10); the second bead (10) is disposed on the bottom inlet hole of the suction tube (3), and the diameter of the bottom inlet hole is smaller than the diameter of the second bead (10).

4. The manual pump according to claim 1, characterized in that, The bottom inner cavity of the suction tube (3) is provided with a second constriction (31); the bottom of the elastic member (6) abuts against the top surface of the second constriction (31).

5. The manual pump according to claim 4, characterized in that, A fixing block (311) is provided in the diameter direction of the second constriction (31), and the bottom of the first intermediate column (7) is fixed on the fixing block (311).

6. The manual pump according to claim 1, characterized in that, The elastic element (6) is a spring, and the main body of the first intermediate column (7) passes through the inner cavity of the spring.

7. The manual pump according to claim 1, characterized in that, The movable cylinder (5) has a vertical range of motion within the suction tube (3), and within this range of motion, the bottom of the movable cylinder (5) only abuts against the elastic member (6).

8. The manual pump according to claim 1, characterized in that, An annular sealing ring is provided between the bottom inner wall of the connecting cylinder (4) and the top outer wall of the movable cylinder (5); the inner wall of the annular sealing ring is close to the outer wall of the movable cylinder (5), and the outer wall is close to the inner wall of the connecting cylinder (4), which is used to seal the gap between the two.

9. A container, comprising a container body and a manual pump installed at the container mouth, characterized in that, The manual pump is the manual pump described in any one of claims 1 to 8.

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