An emulsion pump structure

Abstract

This utility model discloses an emulsion pump structure, including a pump body, a locking cap, a pump head, a main column, a limiting member, and an elastic element. The locking cap is connected to the pump body and has a longitudinally penetrating assembly hole. The main column is connected to the pump head and extends through the assembly hole into the pump body. The locking cap has a deformable part, and the limiting member is connected to the main column. When the main column is assembled through the assembly hole, the limiting member can compress the deformable part to deform outward. The upper surface of the limiting member fits against the upper surface of the deformable part, forming an upward limiting constraint on the main column. The elastic element is located in the pump body and is used to apply an upward force to the main column. This structure, through the cooperation of the deformable part and the limiting member, allows for the pre-assembly of the locking cap and pump body before the assembly of the main column, optimizing the assembly process, adapting to automated production, ensuring the reliability of the upward limiting of the main column, and improving the assembly efficiency and operational stability of the emulsion pump.

Description

Technical Field

[0001] This utility model relates to the field of emulsion pump technology, and in particular to an emulsion pump structure. Background Technology

[0002] In the fields of daily chemicals and pharmaceuticals, emulsion pumps, as a common fluid delivery device, are widely used in the packaging containers of skin care products, detergents, ointments, and other products. Their main function is to achieve a quantitative output of the internal fluid by pressing the pump head. Existing emulsion pumps typically consist of core components such as a pump body, locking cap, pump head, main column, and elastic elements.

[0003] During the operation of an emulsion pump, the upward reset of the main column and pump head requires precise limit control to ensure consistent reset positions and prevent excessive upward movement that could cause components to detach or affect subsequent operations. Currently, existing technologies commonly use an integrated limiting part formed by a locking cap extending downwards. This limiting part works in conjunction with other limiting components such as the piston. Specifically, the integrated limiting part of the locking cap contacts the main column or piston when it reaches a preset position, creating a mechanical block and thus restricting further upward movement of the main column and pump head.

[0004] However, this limiting structure based on an integrated locking cover has significant limitations in actual production and assembly, particularly hindering rapid assembly and automated production. The core issue lies in the strict limitation on the assembly sequence: with this structure, the locking cover must first be assembled with the main column to ensure the correct fit between the locking cover's limiting part and the main column or subsequent piston or other limiting components before the assembled locking cover and main column assembly can be fully assembled into the pump body. This assembly sequence makes pre-assembly of the locking cover and pump body impossible, while in automated production lines, pre-assembly is often crucial for improving production efficiency and simplifying the assembly process. Because the locking cover and pump body cannot be pre-assembled before the main column and pump head are installed, the flexibility and efficiency of the entire assembly process are severely restricted, making it difficult to meet the demands of modern large-scale production for high-speed, high-efficiency assembly. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an emulsion pump structure in which the main column and the locking cap can be assembled by plugging in.

[0006] An emulsion pump structure designed for this purpose includes a pump body, a locking cap, a pump head, a main column, a limiting member, and an elastic element. The locking cap is connected to the pump body. The locking cap has a longitudinally penetrating assembly hole, and the main column is connected to the pump head and extends through the assembly hole into the pump body. The locking cap has a deformable part, and the limiting member is connected to the main column. When the main column is assembled through the assembly hole, the limiting member can squeeze the deformable part to deform outward. The upper surface of the limiting member fits against the upper surface of the deformable part to constrain the upward movement of the main column. The elastic element is disposed in the pump body and is used to apply an upward force to the main column.

[0007] Preferably, the deformation part is a deformation ring with an annular structure disposed on the lock cover; the deformation ring extends downward relative to the lock cover.

[0008] The deformation ring is connected to the assembly hole to form a longitudinally continuous conical assembly channel, the diameter of which gradually decreases from top to bottom.

[0009] Preferably, the limiting component is provided with a chamfer that mates with the tapered assembly channel.

[0010] Preferably, the limiting component and the main column are integrated into one structure.

[0011] Preferably, the pump body is provided with an abutment member, and the elastic element is disposed between the abutment member and the limiting member.

[0012] Preferably, the pump body has several raised ribs arranged along the circumference, and the lower surface of the abutting part abuts and limits the upper surface of the raised ribs.

[0013] Preferably, the pump head has an internal outlet channel that communicates with the inside of the main column, and the output end of the outlet channel is connected to a soft rubber pump nozzle, which is equipped with a deformable pump nozzle that communicates with the outlet channel.

[0014] Preferably, the upper end of the main column is provided with a sealing space that can accommodate the pump ball, and the pump head is provided with a clearance space that communicates with the sealing space; the pump ball can move between the clearance space and the sealing space; the sealing space is located below the clearance space.

[0015] Preferably, the lower end of the main column is provided with a sealing element that fits against the inner wall of the pump body.

[0016] Preferably, the elastic element is a ball spring.

[0017] Compared with the prior art, the emulsion pump structure provided by this invention brings many beneficial effects through innovative design:

[0018] First, it significantly improves assembly efficiency, especially for automated production. Because the locking cover has a deformable section, during the assembly of the main column, the limiting component can compress this section outwards, allowing the main column to be assembled after the locking cover and pump body are pre-connected. This design breaks the traditional fixed sequence of "assembling the locking cover and main column first, then assembling them to the pump body," achieving pre-assembly of the locking cover and pump body. Subsequent core assembly only requires passing the main column with the limiting component through the assembly hole in the locking cover, greatly simplifying the assembly process, reducing the operational complexity of automated equipment, and facilitating large-scale, efficient production.

[0019] Secondly, the reliability and stability of the upward limit are ensured. The upper surface of the limit component and the upper surface of the deformation part fit together to form a constraint. When the elastic element drives the main column to reset upward, the contact between the two can accurately limit the upward limit position of the main column, avoiding component detachment or functional abnormality due to limit failure. At the same time, the deformation generated by the deformation part during assembly can generate a certain rebound force after assembly, enhancing the tightness of the fit between the limit component and the deformation part, and further improving the stability of the limit effect.

[0020] Furthermore, the simple structural design eliminates the need for additional complex components, achieving functional optimization without significantly increasing manufacturing costs, thus offering excellent economic efficiency and practicality. This structure can be widely applied to various emulsion pump products, adapting to the transportation needs of fluids with different viscosities, and has a broad range of applications. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the dissected surface structure of this utility model. Detailed Implementation

[0025] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0028] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0030] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0031] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0032] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] See Figures 1-4 An emulsion pump structure includes a pump body 10, a locking cap 20, a pump head 30, a main column 40, a limiting member 50, and an elastic element 60. The locking cap 20 is connected to the pump body 10. The locking cap 20 is provided with a longitudinally penetrating assembly hole 210. The main column 40 is connected to the pump head 30 and extends through the assembly hole 210 into the pump body 10. The locking cap 20 is provided with a deformable part 200. The limiting member 50 is connected to the main column 40. When the main column 40 is assembled through the assembly hole 210, the limiting member 50 can squeeze the deformable part 200 to deform outward. The upper surface of the limiting member 50 fits against the upper surface of the deformable part 200 to constrain the upward movement of the main column 40. The elastic element 60 is disposed in the pump body 10 and is used to apply an upward moving force to the main column 40.

[0034] The assembly principle of this emulsion pump structure is based on the step-by-step pre-assembly of components and elastic deformation fit, and the specific process is as follows:

[0035] During assembly, the internal functional components such as the elastic element 60 can be placed into the pump body 10 in the preset position to complete the preliminary arrangement of the core components inside the pump body. Then, the locking cover 20 is locked and fixed to the pump body 10 by means of threaded connection or snap-fit, so that the assembly hole 210 of the locking cover 20 and the internal channel of the pump body 10 form a through assembly path, realizing the pre-assembly of the locking cover and the pump body.

[0036] Finally, the main column assembly is inserted and assembled: the main column 40 (with the limiting member 50 already assembled) pre-connected to the pump head 30 is aligned with the assembly hole 210 of the lock cover 20, and an assembly force is applied longitudinally downwards. During this process, as the main column 40 drives the limiting member 50 through the assembly hole 210, the limiting member 50 contacts and compresses the deformable part 200 of the lock cover 20, forcing the deformable part 200 to elastically deform outwards, thereby expanding the local channel of the assembly hole 210 and providing space for the limiting member 50 to pass through. After the limiting member 50 has completely passed through the deformable part 200, the deformable part 200 resets under its own elastic action, and its lower surface forms a contact with the upper surface of the limiting member 50. At this point, the entire assembly process is complete, and the contact structure between the limiting member 50 and the deformable part 200 can directly serve as an upward limiting point for the main column 40, working in conjunction with the force of the elastic element 60 to achieve a stable reset function. This assembly principle utilizes the elastic deformation characteristics of the deformable part 200 to break the assembly sequence limitations of traditional structures, achieving a highly efficient process of "pre-assembling the pump body and locking cover first, and then inserting the main column assembly".

[0037] See Figures 2 to 4 In a first embodiment of the deformation part 200, it is a deformation ring arranged in a ring structure on the lock cover 20; the deformation ring extends downward relative to the lock cover 20; the interior of the deformation ring is connected to the assembly hole 210 to form a longitudinally penetrating conical assembly channel 80, the diameter of the conical assembly channel 80 gradually decreasing from top to bottom. In this embodiment, during assembly, the limiting member can be guided to enter smoothly, and the contraction characteristics of the channel make it easier for the deformation ring to be squeezed to produce outward deformation, ensuring that the limiting member passes through efficiently; after assembly, the deformation ring is reset, and its fit with the upper surface of the limiting member is tighter, which can enhance the stability of the upward limiting.

[0038] In the second embodiment of this invention, the deformation part 200 consists of deformation pieces arranged circumferentially along the assembly hole 210. During assembly, it can provide multi-point guidance for the limiting member, making it easier for individual deformation pieces to be squeezed outwards and reducing the resistance of the limiting member passing through. After assembly, each deformation piece independently resets and fits against the upper surface of the limiting member. Multi-point contact can improve the balance and reliability of the upward limiting.

[0039] See Figure 3 The limiting member 50 is provided with a chamfer 510 that cooperates with the tapered assembly channel 80. It can form a guide structure when the main column 40 is inserted and assembled, reduce the initial resistance of the limiting member 50 to the deformation part 200, and make the limiting member push the deformation part to deform outward more smoothly, thereby improving the smoothness of the assembly process.

[0040] In this utility model, the limiting member 50 and the main column 40 are an integral structure, which can enhance the stability of the connection between the two, avoid loosening or falling off during assembly, reduce the number of parts, simplify the production process, and improve the reliability of the overall structure.

[0041] See Figure 3 The pump body 10 is provided with an abutment member 70, and the elastic element 60 is disposed between the abutment member 70 and the limiting member 50. The abutment member 70 provides stable support for the elastic element 60 and cooperates with the limiting member 50 to form an installation space for the elastic element, ensuring that the elastic element can stably apply an upward force to the main column 40 and ensuring the reliable realization of the main column reset function.

[0042] See Figure 3 The pump body 10 has a plurality of raised ribs 110 arranged along the circumference inside, and the lower surface of the abutting member 70 abuts and limits the upper surface of the raised ribs 110.

[0043] See Figure 2 The pump head 30 has an internal outlet channel 310 that communicates with the interior of the main column 40. The output end of the outlet channel 310 is connected to a soft rubber pump nozzle 320. The soft rubber pump nozzle 320 has a deformable pump nozzle 330 that communicates with the outlet channel 310. Under normal conditions, the deformable pump nozzle 330 of the soft rubber pump nozzle 320 is in a closed state due to its soft rubber properties, which can prevent leakage of residual emulsion inside the pump. When the pump head 30 is pressed, the internal pressure forces the deformable pump nozzle 330 to open, so that the emulsion can be smoothly output through the outlet channel 310, thereby achieving effective control of the emulsion output.

[0044] See Figure 2 The main column 40 has a sealed space 410 at its upper end that can accommodate the pump ball 90. The pump head 30 has a clearance space 300 that communicates with the sealed space 410. The pump ball 90 can move between the clearance space 300 and the sealed space 410. The sealed space 410 is located below the clearance space 300. When the pump head 30 is pressed, the pump ball 90 moves upward to the clearance space 300, making the sealed space 410 communicate with the clearance space 300, allowing the emulsion to be delivered. When released, the pump ball 90 falls back into the sealed space 410 to form a seal, preventing the emulsion from flowing back and achieving precise control of the emulsion flow.

[0045] See Figure 3 The lower end of the main column 40 is provided with a sealing element 400 that fits against the inner wall of the pump body 10.

[0046] In this invention, the elastic element 60 can be an existing elastic element, preferably a ball spring.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pump structure for a liquid, characterized by: It includes a pump body (10), a locking cover (20), a pump head (30), a main column (40), a limiting component (50), and an elastic element (60); The lock cover (20) is connected to the pump body (10); The lock cover (20) is provided with a longitudinally penetrating assembly hole (210), the main column (40) is connected to the pump head (30) and the main column (40) extends through the assembly hole (210) into the pump body (10); The lock cover (20) is provided with a deformable part (200), and the limiting member (50) is connected to the main column (40); when the main column (40) is assembled through the assembly hole (210), the limiting member (50) can squeeze the deformable part (200) to deform outward. The upper surface of the limiting member (50) is attached to the upper surface of the deformable part (200) to form an upward limiting constraint on the main column (40); The elastic element (60) is disposed within the pump body (10) and is used to apply an upward force to the main column (40).

2. A pump structure according to claim 1, wherein: The deformation part (200) is a deformation ring with an annular structure disposed on the lock cover (20); the deformation ring extends downward relative to the lock cover (20); The deformation ring is connected to the assembly hole (210) to form a longitudinally penetrating conical assembly channel (80), the diameter of which gradually decreases from top to bottom.

3. A pump-action structure according to claim 2, wherein: The limiting member (50) is provided with a chamfer (510) that mates with the tapered assembly channel (80).

4. The pump structure according to claim 1, wherein: The limiting member (50) and the main column (40) are an integral structure.

5. The pump structure according to claim 1, wherein: The pump body (10) is provided with an abutment (70), and the elastic element (60) is disposed between the abutment (70) and the limiting element (50).

6. A pump-action structure according to claim 5, wherein: The pump body (10) has a plurality of ribs (110) arranged along the circumference inside, and the lower surface of the abutting member (70) abuts and limits the upper surface of the ribs (110).

7. The pump structure according to claim 1, wherein: The pump head (30) is provided with a liquid outlet channel (310) that communicates with the inside of the main column (40). The output end of the liquid outlet channel (310) is connected to a soft rubber pump nozzle (320). The soft rubber pump nozzle (320) is provided with a deformation pump nozzle (330) that communicates with the liquid outlet channel (310).

8. The pump structure according to claim 1, wherein: The upper end of the main column (40) is provided with a sealed space (410) that can accommodate the pump ball (90), and the pump head (30) is provided with a clearance space (300) that communicates with the sealed space (410); the pump ball (90) can move between the clearance space (300) and the sealed space (410); the sealed space (410) is located below the clearance space (300).

9. The pump structure according to claim 1, wherein: The lower end of the main column (40) is provided with a sealing element (400) that fits against the inner wall of the pump body (10).

10. The pump structure according to claim 1, wherein: The elastic element (60) is a ball spring.

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