Plastic pump head

Abstract

This utility model discloses a plastic pump head, including a pump body, a resettable pressing head installed inside the pump body, a pump chamber inside the pump body, a connecting pipe at the center of the pump chamber, and an outlet pipe inserted into the connecting pipe on the pressing head. The lower end of the inner wall of the pump chamber is arc-shaped, contracting towards the center. The pressing head is equipped with a spring piece that slides and deforms along the inner wall of the pump chamber to generate elastic force. The reset structure made of plastic replaces the reset function of the metal spring. At the same time, it works with a one-way valve to control the opening and closing of the inlet and outlet, ensuring stable liquid output. This invention adopts an all-plastic material design, which simplifies the production process, improves corrosion resistance and service life, and can be directly recycled after disposal without complicated sorting, greatly reducing the difficulty and cost of recycling, reducing material loss, realizing the recycling of resources, and alleviating the environmental pressure brought by solid waste treatment. It conforms to the development trend of green and environmentally friendly industries and has good practicality and environmental value.

Description

Technical Field

[0001] This utility model relates to an emulsion pump, and more particularly to a plastic pump head. Background Technology

[0002] Lotion pumps are commonly used in daily cleaning and skincare products such as hand soap, shower gel, and facial cleanser to dispense lotion, and are widely used in daily life.

[0003] Traditional emulsion pumps typically consist of multiple heterogeneous components. For example, the pump body, suction tube, and pump head are made of plastic, while the springs are made of stainless steel or other metals. For companies, this requires sourcing various raw materials, including plastics and metals. The procurement channels, supplier qualifications, and price fluctuations for different materials vary significantly, increasing raw material procurement costs and inventory management difficulties. Furthermore, metal springs require multiple processing steps such as cutting, winding, and heat treatment. This complex process not only extends the production cycle but also requires specialized production equipment and professional operators, further increasing overall production costs and reducing product market competitiveness. In addition, during long-term use, metal springs are susceptible to corrosion from acidic and alkaline components, surfactants, and preservatives in emulsions and detergents, leading to rust, loss of elasticity, and even breakage. This can cause pump body rebound failure and poor liquid flow, severely impacting the user experience.

[0004] Furthermore, after traditional emulsion pumps are discarded, the mixture of metals, plastics, and other materials requires complex sorting and separation during recycling. However, in existing recycling technologies, the separation of heterogeneous materials is not only difficult and costly, but also prone to material loss during the separation process. As a result, most of the discarded pump bodies are treated as mixed waste, making it difficult to achieve effective recycling and utilization, resulting in resource waste and pressure on solid waste treatment. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a plastic pump head.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A plastic pump head includes a pump body, a resettable pressing head installed in the pump body, a pump chamber provided in the pump body, a connecting pipe provided at the center of the pump chamber, an outlet pipe inserted into the connecting pipe on the pressing head, and a spring piece provided on the pressing head that slides and deforms along the inner wall of the pump chamber to generate elastic force.

[0007] The lower end of the inner wall of the pump chamber is an arc shape that tapers towards the middle.

[0008] The pump chamber is provided with a sleeve concentric with the connecting pipe, and an interlayer is formed between the sleeve and the spring sheet to accommodate the spring sheet. The lower end of the sleeve is provided with a window for the end of the spring sheet to be inserted into the interlayer.

[0009] The lower end of the connecting pipe is provided with an inlet controlled by a first one-way valve, and the upper end of the first one-way valve is slidably inserted into the outlet pipe.

[0010] A plastic pump head includes a pump body, a resettable pressing head installed in the pump body, a pump chamber provided in the pump body, an inlet controlled by a first one-way valve at the lower end of the pump chamber, an outlet pipe provided on the pressing head, the lower end of the outlet pipe being slidably sleeved on the upper end of the first one-way valve, and a first plastic spring for driving the pressing head to reset being sleeved on the outside of the outlet pipe.

[0011] A plastic pump head includes a pump body, a resettable pressing head installed inside the pump body, a pump chamber provided inside the pump body, a connecting pipe provided inside the pump chamber, an outlet pipe inserted into the connecting pipe on the pressing head, an inlet controlled by a second one-way valve at the lower end of the connecting pipe, an outlet controlled by a third one-way valve in the outlet pipe, and a second plastic spring installed on the connecting pipe to drive the pressing head to reset.

[0012] The outlet is located at the lower end of the outlet pipe, the lower end of the second plastic spring presses against the top surface of the second one-way valve, and the upper end of the second plastic spring is connected to the third one-way valve.

[0013] The second plastic spring passes through the inside of the connecting tube.

[0014] The second plastic spring is sleeved on the outside of the connecting tube, and the upper and lower ends of the connecting tube are respectively provided with openings for the second plastic spring to pass through inside and outside the connecting tube.

[0015] The lower end of the second plastic spring presses against the top surface of the second one-way valve, and the upper end of the second plastic spring presses against the lower end of the outlet pipe.

[0016] The second plastic spring is sleeved on the outside of the liquid outlet tube, with the lower end of the second plastic spring abutting against the top of the connecting tube and the upper end of the second plastic spring abutting against the inner top surface of the pressing head.

[0017] The beneficial effects of this utility model are as follows: A resettable pressing head is installed inside the pump body. A pump chamber is provided inside the pump body, with a connecting pipe at the center of the pump chamber. An outlet pipe is inserted into the connecting pipe on the pressing head. The lower end of the inner wall of the pump chamber is an arc shape that tapers towards the center. A spring piece is provided on the pressing head that slides and deforms along the inner wall of the pump chamber to generate elastic force. A reset structure made of plastic replaces the reset function of a metal spring. Simultaneously, a one-way valve controls the opening and closing of the inlet and outlet, ensuring stable liquid output. This invention uses an all-plastic material design, simplifying the production process, improving corrosion resistance and service life. Furthermore, it can be directly and uniformly recycled without complex sorting after disposal, significantly reducing recycling difficulty and costs, reducing material loss, and realizing resource recycling. It also alleviates the environmental pressure from solid waste treatment, conforming to the trend of green and environmentally friendly industrial development, and possesses good practicality and environmental value. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is one of the structural schematic diagrams of Embodiment 1; Figure 2 This is the second structural schematic diagram of Example 1; Figure 3 This is a structural schematic diagram of Example 2; Figure 4 This is a structural schematic diagram of Example 3; Figure 5 This is a structural schematic diagram of Example 4; Figure 6 This is one of the structural schematic diagrams of Embodiment 5; Figure 7 This is the second structural schematic diagram of Example 5; Figure 8 This is a structural schematic diagram of Example 6. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0022] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0023] Example 1, referring to Figure 1-2A plastic pump head includes a pump body 1, within which a resettable pressing head 2 is installed. The pump body 1 contains a pump chamber 3, with a connecting pipe 4 at its center. The pressing head 2 has an outlet pipe 5 inserted into the connecting pipe 4. The lower end of the inner wall of the pump chamber 3 is arc-shaped, tapering towards the center. The pressing head 2 has a spring piece 6 that slides and deforms along the inner wall of the pump chamber 3 to generate elastic force. This plastic reset structure replaces the reset function of a metal spring. Simultaneously, a one-way valve controls the opening and closing of the inlet and outlet, ensuring stable liquid output. This invention uses an all-plastic design, simplifying the production process, improving corrosion resistance and service life. Furthermore, it allows for direct and unified recycling without complex sorting after disposal, significantly reducing recycling difficulty and costs, minimizing material loss, achieving resource recycling, and alleviating environmental pressure from solid waste treatment. It aligns with the trend of green and environmentally friendly industrial development and possesses good practicality and environmental value.

[0024] This invention abandons the heterogeneous combination of metal springs and plastic components in traditional emulsion pumps, and uses all-plastic materials to construct the spring or plastic spring structure. On the one hand, enterprises do not need to purchase metal raw materials, and can complete production using only plastic materials, reducing the risks brought by multi-channel supplier screening, qualification review and price fluctuations, and lowering procurement costs. On the other hand, it eliminates complex processing steps such as metal spring cutting, winding and heat treatment, and eliminates the need to invest in special production equipment and professional operators, shortening the production cycle, significantly reducing the overall production cost, simplifying the inventory management process and enhancing the product's market competitiveness.

[0025] The pump chamber 3 is provided with a sleeve 7 concentric with the connecting pipe 4. The sleeve 7 and the spring 6 form an interlayer to accommodate the spring 6. The lower end of the sleeve 7 is provided with a window 8 for the end of the spring 6 to be inserted into the interlayer. The lower end of the connecting pipe 4 is provided with an inlet 10 controlled by a first one-way valve 9. The upper end of the first one-way valve 9 is slidably inserted into the outlet pipe 5.

[0026] When the pressing head 2 is pressed, the spring piece 6 slides along the inner wall of the pump chamber 3 and folds back through the window 8 to insert between the layers (e.g., Figure 2 As shown in A), the first one-way valve 9 is pressed down by the liquid outlet pipe 5, blocking the liquid inlet 10. The air in the pump chamber 3 is discharged through the pressing head 2. After the pressing head 2 is released, the spring 6 extends and resets, pushing the pressing head 2 upward. At the same time, the first one-way valve 9 is released, and the liquid in the bottle enters the pump chamber 3 through the liquid inlet 10. Pressing the button again will allow the liquid to be discharged normally.

[0027] Furthermore, the spring piece 6 can be one of a vertical structure, a wave structure, or an arc surface structure.

[0028] In addition, the spring 6 can also be a structure commonly used to drive the pressing head 2 to reset, such as a spring.

[0029] Example 2, refer to Figure 3 A plastic pump head includes a pump body 1, a resettable pressing head 2 installed inside the pump body 1, a pump chamber 3 provided inside the pump body 1, an inlet 10 controlled by a first one-way valve 9 provided at the lower end of the pump chamber 3, an outlet pipe 5 provided on the pressing head 2, the lower end of the outlet pipe 5 being slidably sleeved on the upper end of the first one-way valve 9, and a first plastic spring 11 for driving the pressing head 2 to reset being sleeved on the outside of the outlet pipe 5.

[0030] When the press head 2 is pressed, the first plastic spring 11 is compressed. At the same time, the first one-way valve 9 is pressed down by the liquid outlet pipe 5, blocking the liquid inlet 10. The air in the pump chamber 3 is discharged through the press head 2. After the press head 2 is released, the first plastic spring 11 returns to its original position, pushing the press head 2 upward. At the same time, the first one-way valve 9 is released, and the liquid in the bottle enters the pump chamber 3 through the liquid inlet 10. Pressing the press again will dispense the liquid normally.

[0031] Reference Figure 4-8 A plastic pump head includes a pump body 1, a resettable pressing head 2 installed inside the pump body 1, a pump chamber 3 provided inside the pump body 1, a connecting pipe 4 provided inside the pump chamber 3, an outlet pipe 5 inserted into the connecting pipe 4 on the pressing head 2, an inlet 10 controlled by a second one-way valve 12 at the lower end of the connecting pipe 4, an outlet 14 controlled by a third one-way valve 13 in the outlet pipe 5, and a second plastic spring 15 installed on the connecting pipe 4 to drive the pressing head 2 to reset.

[0032] When the press head 2 is pressed, the second plastic spring 15 is compressed. At the same time, the second one-way valve 12 is compressed by the liquid outlet pipe 5, blocking the liquid inlet 10. The air in the pump chamber 3 opens the third one-way valve 13 and is discharged from the liquid outlet 14. After the press head 2 is released, the first plastic spring 11 returns to its original position, pushing the press head 2 upward. The third one-way valve 13 opens without airflow, thereby re-blocking the liquid outlet 14. At the same time, the first one-way valve 9 is released, and the liquid in the bottle enters the pump chamber 3 through the liquid inlet 10. Pressing the press again will dispense the liquid normally.

[0033] refer to Figure 4 , 5The outlet 14 is located at the lower end of the outlet pipe 5, the lower end of the second plastic spring 15 presses against the top surface of the second one-way valve 12, and the upper end of the second plastic spring 15 is connected to the third one-way valve 13.

[0034] Example 3, Reference Figure 4 The second plastic spring 15 passes through the inside of the connecting tube 4.

[0035] Example 4, Reference Figure 5 The second plastic spring 15 is sleeved on the outside of the connecting tube 4, and the upper and lower ends of the connecting tube 4 are respectively provided with openings for the second plastic spring 15 to pass through inside and outside the connecting tube 4.

[0036] Example 5, Reference Figure 6 , 7 The lower end of the second plastic spring 15 presses against the top surface of the second one-way valve 12, and the upper end of the second plastic spring 15 presses against the lower end of the liquid outlet pipe 5. A first ball 16 is added between the second one-way valve 12 and the liquid inlet 10 to further improve the sealing performance of the liquid inlet 10 and at the same time improve the elastic force generated by the compression of the second plastic spring 15.

[0037] Figure 7 and Figure 6 The difference is: Figure 6 The third one-way valve 13 and the outlet 14 are located at the lower end of the outlet pipe 5. Figure 7 The third one-way valve 13 and the liquid outlet 14 are located at the upper end of the liquid outlet pipe 5.

[0038] Example 6, Reference Figure 8 The second plastic spring 15 is sleeved on the outside of the liquid outlet pipe 5. The lower end of the second plastic spring 15 abuts against the top of the connecting pipe 4, and the upper end of the second plastic spring 15 abuts against the inner top surface of the pressing head 2.

[0039] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A plastic pump head, comprising a pump body (1), wherein a resettable pressing head (2) is installed inside the pump body (1), characterized in that... The pump body (1) is provided with a pump chamber (3), and a connecting pipe (4) is provided at the center of the pump chamber (3). The pressing head (2) is provided with an outlet pipe (5) inserted into the connecting pipe (4). The pressing head (2) is provided with a spring piece (6) that slides and deforms along the inner wall of the pump chamber (3) to generate elastic force.

2. The plastic pump head according to claim 1, characterized in that... The lower end of the inner wall of the pump chamber (3) is an arc shape that tapers towards the middle.

3. The plastic pump head according to claim 1, characterized in that... The pump chamber (3) is provided with a sleeve (7) concentric with the connecting pipe (4). A sandwich layer is formed between the sleeve (7) and the spring piece (6) to accommodate the spring piece (6). The lower end of the sleeve (7) is provided with a window (8) for the end of the spring piece (6) to be inserted into the sandwich layer.

4. The plastic pump head according to claim 1, characterized in that... The lower end of the connecting pipe (4) is provided with an inlet (10) controlled by a first one-way valve (9), and the upper end of the first one-way valve (9) is slidably inserted into the outlet pipe (5).

5. A plastic pump head, comprising a pump body (1), wherein a resettable pressing head (2) is installed inside the pump body (1), characterized in that... The pump body (1) is provided with a pump chamber (3), and the lower end of the pump chamber (3) is provided with an inlet (10) controlled by a first one-way valve (9). The pressing head (2) is provided with an outlet pipe (5), and the lower end of the outlet pipe (5) is slidably sleeved on the upper end of the first one-way valve (9). The outer side of the outlet pipe (5) is provided with a first plastic spring (11) that drives the pressing head (2) to reset.

6. A plastic pump head, comprising a pump body (1), wherein a resettable pressing head (2) is installed inside the pump body (1), characterized in that... The pump body (1) is provided with a pump chamber (3), the pump chamber (3) is provided with a connecting pipe (4), the pressing head (2) is provided with an outlet pipe (5) inserted into the connecting pipe (4), the lower end of the connecting pipe (4) is provided with an inlet (10) controlled by a second one-way valve (12), the outlet pipe (5) is provided with an outlet (14) controlled by a third one-way valve (13), and a second plastic spring (15) is installed on the connecting pipe (4) to drive the pressing head (2) to reset.

7. The plastic pump head according to claim 6, characterized in that... The outlet (14) is located at the lower end of the outlet pipe (5), the lower end of the second plastic spring (15) presses against the top surface of the second one-way valve (12), and the upper end of the second plastic spring (15) is connected to the third one-way valve (13).

8. The plastic pump head according to claim 7, characterized in that... The second plastic spring (15) passes through the inside of the connecting tube (4).

9. The plastic pump head according to claim 7, characterized in that... The second plastic spring (15) is sleeved on the outside of the connecting tube (4), and the upper and lower ends of the connecting tube (4) are respectively provided with openings for the second plastic spring (15) to pass through inside and outside the connecting tube (4).

10. The plastic pump head according to claim 6, characterized in that... The lower end of the second plastic spring (15) presses against the top surface of the second one-way valve (12), and the upper end of the second plastic spring (15) presses against the lower end of the liquid outlet pipe (5).

11. The plastic pump head according to claim 6, characterized in that... The second plastic spring (15) is sleeved on the outside of the liquid outlet pipe (5). The lower end of the second plastic spring (15) abuts against the top of the connecting pipe (4), and the upper end of the second plastic spring (15) abuts against the inner top surface of the pressing head (2).

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