A pump head airtight structure of a press pump

Abstract

The utility model discloses a pump head airtight structure of press pump, including press pump main body, lock cover cover, pump stem and pump head main body, one side of pump head main body is provided with pump head liquid outlet pipe, still includes closed subassembly, and it sets up on pump head main body, and closed subassembly includes the cavity of setting up in the pump head main body inside, the inside bushing of cavity is equipped with movable rod, and the outer surface of movable rod is fixed with sliding block, and one end of movable rod passes through cavity and is fixed with sealing element, and the other end of movable rod passes through cavity and is fixed with connecting piece, and the outer surface of movable rod is equipped with return spring, one side fixed with first seal ring in the pump head main body inside, and first seal ring covers the outer surface of movable rod, the utility model discloses the cooperation of above -mentioned each device between uses, has solved the problem of liquid outlet blockage fundamentally, has guaranteed the smoothness of press pump long -term use, has reduced the frequency that user cleans liquid outlet.

Description

Technical Field

[0001] This utility model relates to the field of press pump technology, specifically an airtight pump head structure for a press pump. Background Technology

[0002] In the prior art, a Chinese utility model patent discloses a leak-proof press pump head (publication number: CN219905350U), which discloses a pump tube with a liquid-drawing conduit fixedly installed at the bottom end, a pumping liquid assembly installed inside the pump tube, a press head installed directly above the pump tube, and the press head and pumping liquid assembly being staggered. A leak-proof assembly is installed at the inner top of the pump tube, including a pad sealing ring, with a soft connecting strip fixedly installed at the top of the pad sealing ring. It achieves a double-layer sealing effect by using an upper sealing ball to lock the lower limiting ring's channel opening, forming an upper seal, and using a lower sealing ball to lock the lower end of the pump tube, forming a lower seal. When the pump tube is pressed, the piston's self-sealing action and the pad sealing ring combine to form a double-layer seal.

[0003] However, this only improves the sealing of the pump tube. When the pump head is pressed to squeeze out viscous liquid, due to the viscosity of the liquid itself and the shape and size design of the pump head outlet, it is often difficult for the liquid to flow out completely smoothly. Some liquid will always remain on the inner wall or edge of the outlet. This residual liquid may initially be just a thin layer and not noticeable, but over time, the situation will gradually worsen. Because there is no protective sealing structure, the residual liquid is completely exposed to the air. The moisture in the air will slowly evaporate, while the active ingredients in the liquid will gradually concentrate and solidify. For cosmetic liquids containing oils, colloids, etc., this solidification process will be more obvious. They will gradually become more viscous from the initial viscous state, then form a semi-solid state, and finally harden completely into a solid. These solidified solids adhere tightly to the outlet of the pump head. With the increase of use and the accumulation of time, the amount of solids will continue to increase. They will act like small obstacles, gradually blocking the outlet, requiring more force to press the pump head to squeeze out the liquid, seriously affecting the normal use of the pump head. Utility Model Content

[0004] This invention provides an airtight pump head structure for a push-pump, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtight pump head structure for a push-button pump, comprising a push-button pump body, a locking cover sleeve, a pump rod, and a pump head body, wherein a pump head outlet pipe is provided on one side of the pump head body, and further comprising:

[0006] A sealing component, which is located on the pump head body, is used to seal the outlet of the pump head outlet pipe;

[0007] The sealing assembly includes a cavity inside the pump head body, a movable rod fitted inside the cavity, a slider fixed to the outer surface of the movable rod, one end of the movable rod passing through the cavity and fixed with a seal, the other end of the movable rod passing through the cavity and fixed with a connector, a return spring fitted to the outer surface of the movable rod, a first sealing ring fixed to one side inside the pump head body, the first sealing ring covering the outer surface of the movable rod, a second sealing ring embedded in the outlet of the pump head outlet pipe, a support fixed to the middle of the locking cover, and a fixing member fixed to one side of the top of the support.

[0008] As a further optimization, the seal is spherical and abuts against the inner wall of the second sealing ring.

[0009] As a further optimization, both the second sealing ring and the first sealing ring are made of food-grade silicone.

[0010] As a further optimization, the reset spring is elastically supported between the slider and the cavity, and the slider and the cavity are slidably connected.

[0011] As a further optimization, both the top of the fastener and the bottom of the connector are chamfered.

[0012] As a further optimization, the chamfer of the fastener is pressed into contact with the chamfer of the connector.

[0013] As a further optimization, the locking cover is fixed to the outer periphery of the press pump body, the pump rod is sleeved on the top of the press pump body, the pump head body and the pump head outlet pipe are detachably fixedly connected, and the pump head body and the pump head outlet pipe are connected.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Addressing the pain point that viscous liquids such as cosmetics tend to remain at the outlet and concentrate and solidify upon exposure to air, the sealing component can quickly isolate the residual liquid at the outlet from the outside air after the pump is used, forming an independent sealed space. This design avoids the concentration and solidification of components caused by the evaporation of water in the residual liquid. Especially for liquids containing oils or colloids, it can prevent the formation of solidified deposits on the inner wall of the outlet, fundamentally solving the problem of outlet blockage, ensuring the smooth operation of the pump over a long period, and reducing the frequency of cleaning the outlet for users. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembly structure of the pump head body of this utility model;

[0017] Figure 3 This is a frontal cross-sectional view of the present invention.

[0018] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0019] Figure 5 for Figure 3 A magnified structural diagram at point B in the middle.

[0020] In the diagram: 1. Pump body; 2. Locking cover; 3. Pump rod; 4. Pump head body; 5. Pump head outlet pipe; 6. Support component; 7. Fixing component; 8. Cavity; 9. Movable rod; 10. Slider; 11. Return spring; 12. First sealing ring; 13. Sealing component; 14. Second sealing ring; 15. Connecting component. Detailed Implementation

[0021] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 5 As shown, this is an airtight structure for the pump head of a press pump. This structure is designed to improve the airtightness of the pump head and reduce liquid leakage and the entry of outside air. It is especially optimized to address the problem of viscous liquids such as cosmetics leaving residues and solidifying at the outlet, causing blockages.

[0023] The press pump's airtight structure includes a press pump body 1, a locking cover 2, a pump rod 3, and a pump head body 4. A pump head outlet pipe 5 is provided on one side of the pump head body 4. Its core improvement lies in the addition of related components to enhance airtightness.

[0024] Among them, the sealing component is the key to achieving good airtightness. The pump head body 4 has a cavity 8 inside, which provides space for the installation and movement of components such as the movable rod 9. The movable rod 9 is sleeved inside the cavity 8, and the slider 10 fixed on its outer surface is slidably connected to the cavity 8. This sliding fit ensures that the movable rod 9 can move axially stably in the cavity 8. One end of the movable rod 9 passes through the cavity 8 and is fixed with a spherical seal 13, and the other end passes through the cavity 8 and is fixed with a connector 15. The return spring 11 sleeved on the outer surface is elastically supported between the slider 10 and the cavity 8. When the movable rod 9 is moved by external force, the return spring 11 can provide a restoring force to return it to the initial position.

[0025] Specifically, a first sealing ring 12 is fixed on one side inside the pump head body 4, and the first sealing ring 12 covers the outer surface of the movable rod 9. This design can effectively prevent liquid or air from leaking from the gap between the movable rod 9 and the pump head body 4.

[0026] The outlet of the pump head outlet pipe 5 is embedded with a second sealing ring 14. A spherical seal 13 abuts against the inner wall of the second sealing ring 14. The spherical seal 13 can fit better with the second sealing ring 14, further enhancing the sealing performance at the outlet.

[0027] The locking cover 2 is fixed to the outer periphery of the pump body 1. The support member 6 fixed in the middle supports the fixing member 7. The top chamfer of the fixing member 7 fixed on one side of the support member 6 is pressed into contact with the bottom chamfer of the connector 15.

[0028] Specifically, when the pump is not in operation, this squeezing contact can drive the movable rod 9 through the connector 15, so that the seal 13 tightly abuts against the second sealing ring 14 to ensure the closure of the liquid outlet; while during the pressing operation, the movement of the relevant components can separate the seal 13 from the second sealing ring 14, so that the liquid can flow out.

[0029] In addition, both the second sealing ring 14 and the first sealing ring 12 are made of food-grade silicone. Food-grade silicone has good elasticity and sealing properties and meets relevant food contact standards, ensuring the safety of the pump when used in food, cosmetics and other fields.

[0030] This structure seals the outlet of the pump head's outlet pipe 5 with a sealing component. After the pump is used, the seal 13 and the second sealing ring 14 fit tightly together, forming an effective sealed space. This isolates any viscous liquid that may remain at the outlet from the outside air, preventing the residual liquid from evaporating or the active ingredients from concentrating and solidifying due to exposure to air. This is especially effective for cosmetic liquids containing oils, colloids, etc., preventing the formation of solids on the inner wall or edge of the outlet. As the number of uses increases and time passes, there will be no accumulation of solids that clog the outlet, ensuring the smooth operation of the pump over long-term use. Frequent cleaning of the outlet is not required, thus improving the user experience.

[0031] In summary, the airtight structure of the pump head of this push pump, through the reasonable cooperation of various components, not only significantly improves the airtightness of the pump head and effectively prevents liquid leakage and the entry of outside air, but also specifically solves the problem of viscous liquid residue solidification at the outlet causing blockage. It has the advantages of stable structure, good sealing effect and excellent user experience.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A press pump head airtight structure, comprising a press pump body (1), a locking cover (2), a pump rod (3), and a pump head body (4), wherein a pump head outlet pipe (5) is provided on one side of the pump head body (4), characterized in that, Also includes: A sealing component is provided on the pump head body (4) to seal the outlet of the pump head outlet pipe (5); The sealing assembly includes a cavity (8) inside the pump head body (4), a movable rod (9) is sleeved inside the cavity (8), a slider (10) is fixed on the outer surface of the movable rod (9), one end of the movable rod (9) passes through the cavity (8) and is fixed with a seal (13), the other end of the movable rod (9) passes through the cavity (8) and is fixed with a connector (15), a return spring (11) is sleeved on the outer surface of the movable rod (9), a first sealing ring (12) is fixed on one side inside the pump head body (4), a second sealing ring (14) is embedded in the outlet of the pump head outlet pipe (5), a support member (6) is fixed in the middle of the locking cover (2), and a fixing member (7) is fixed on one side of the top of the support member (6).

2. The airtight pump head structure of the push pump according to claim 1, characterized in that: The seal (13) is spherical and abuts against the inner wall of the second sealing ring (14).

3. The airtight pump head structure of the push pump according to claim 1, characterized in that: Both the second sealing ring (14) and the first sealing ring (12) are made of food-grade silicone.

4. The airtight pump head structure of a push-pump according to claim 1, characterized in that: The reset spring (11) is elastically supported between the slider (10) and the cavity (8), and the slider (10) and the cavity (8) are slidably connected.

5. The airtight pump head structure of a push-pump according to claim 1, characterized in that: The top of the fastener (7) and the bottom of the connector (15) are both provided with chamfers, and the chamfer of the fastener (7) and the chamfer of the connector (15) are pressed into contact.

6. The airtight pump head structure of a push-pump according to claim 5, characterized in that: The first sealing ring (12) covers the outer surface of the movable rod (9).

7. The airtight pump head structure of a push-pump according to claim 1, characterized in that: The locking cover (2) is fixed to the outer periphery of the press pump body (1), the pump rod (3) is sleeved on the top of the press pump body (1), the pump head body (4) and the pump head outlet pipe (5) are detachably fixedly connected, and the pump head body (4) and the pump head outlet pipe (5) are connected.

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