A new pumping unit structure

Abstract

The utility model discloses a novel pumping unit structure relates to automobile maintenance equipment field, aims at simplifying structure, promotes operation reliability. It includes jar body, pipe fitting, sealing piston, connecting rod, elastic element, cam piece and operating handle, and pipe fitting is fixed with jar body and the lower end opening, is equipped with the communicating port of communicating jar body, and there is sealing boss below the communicating port, and sealing piston moves up and down below boss. The connecting rod is connected with sealing piston, and extends to the upper of jar body through pipe fitting and can move relative to pipe fitting, and jar body is equipped with abutting part, and cam piece is rotatably connected with connecting rod and can abut the upper surface of abutting part, and operating handle is connected with cam piece. When the first and second constraint surface of cam piece abut against abutting part respectively, sealing piston is at the sealing position of sticking with boss and the separated communicating position correspondingly, and elastic element applies downward force to connecting rod, and drives sealing piston to move to the communicating position. The structure simplifies components, and can switch sealing and liquid discharge state by rotating operating handle, and is convenient and stable.

Description

Technical Field

[0001] This utility model relates to the field of oil pumping technology for automotive maintenance, and in particular to a novel oil pumping machine structure. Background Technology

[0002] In automotive maintenance, the extraction of fluids such as engine oil and transmission fluid is a crucial process. Vacuum adsorption oil extraction technology has become the mainstream solution due to its fast extraction speed, minimal residue, and minimal damage. Its core principle is: after evacuating the sealed tank, the fluid is connected to the vehicle's fluid chamber via a pipeline, and the pressure difference forces the fluid into the tank.

[0003] After oil extraction is complete, it needs to be drained into a collection bucket through the drain port at the bottom of the tank. Currently, the mainstream drain port control structure is a "lever-connecting rod-piston" transmission: a hinged seat is installed on the tank, and the operating lever is hinged to it; the operating lever has a connecting pin, and a slotted pin is cut at the top of the connecting rod, into which the connecting pin is inserted; the bottom of the connecting rod is connected to the drain port piston, which is sealed to the drain port. Pressing or moving the operating lever moves the connecting rod and piston through the connecting pin and slotted pin, thus opening and closing the drain port. An additional locking structure is required to fix the position of the operating lever and prevent leakage.

[0004] However, this structure has obvious flaws:

[0005] Complex structure: It relies on multiple components such as hinge base, connecting pin, and strip pin groove, and has high fitting requirements. It is prone to transmission jamming or sealing failure due to dimensional deviation.

[0006] High cost: Each component needs to be processed individually, and additional quality inspection is required to ensure accuracy, which increases production costs;

[0007] Assembly is cumbersome: It requires multiple steps such as welding, pin connection, and component assembly, which is time-consuming and labor-intensive, and is prone to defects due to assembly errors. Utility Model Content

[0008] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a novel oil pumping unit structure that reduces the number of parts and facilitates assembly.

[0009] A novel oil pumping unit structure designed for this purpose includes a tank, pipe fittings, a sealing piston, a connecting rod, an elastic element, a cam component, and an operating handle.

[0010] The pipe fitting is fixedly connected to the tank body; the lower end of the pipe fitting is open; the pipe fitting is provided with a communication port that communicates with the inside of the tank body; a sealing boss is provided below the communication port, and the sealing piston is provided below the sealing boss that moves up and down.

[0011] The connecting rod is connected to the sealing piston and is movable up and down relative to the pipe fitting; the connecting rod extends through the pipe fitting to the top of the tank body;

[0012] The tank body is provided with an abutment member, the cam member is rotatably connected to the connecting rod and can abut against the upper surface of the abutment member; the operating handle is connected to the cam member;

[0013] The cam component is provided with a first constraint surface and a second constraint surface;

[0014] When the first constraint surface abuts against the upper surface of the abutment, the sealing piston is in the sealing position, and the sealing piston and the sealing boss are in contact with each other;

[0015] When the second constraint surface abuts against the upper surface of the abutment, the sealing piston is in the communicating position, and the sealing piston and the sealing boss are separated from each other;

[0016] The elastic element is used to apply a downward force to the connecting rod to drive the sealing piston to move from the sealing position to the communicating position.

[0017] Preferably, the sealing boss is disposed on the inner wall of the pipe fitting.

[0018] Preferably, the lower end of the pipe fitting is connected to a joint, and the sealing boss is disposed on the inner wall of the joint.

[0019] Preferably, the upper surface of the tank is provided with a first opening; a sealing plug connected to the upper end of the pipe is provided in the first opening; the upper end of the connecting rod extends upward through the sealing plug.

[0020] Preferably, the lower surface of the tank is provided with a second opening, and the connector is connected to the second opening.

[0021] Preferably, the abutment is a housing with an opening at the lower end, and the first constraint surface or the second constraint surface abuts against the upper surface of the housing.

[0022] Preferably, the elastic element is disposed inside the housing, the connecting rod is provided with a connector, and the elastic element is a spring and is sleeved on the connecting rod between the top surface of the housing and the connector.

[0023] Preferably, a sealing piston is fixedly connected to the connecting rod above the communication port, and the sealing piston is in contact with the inner wall of the pipe.

[0024] Preferably, both the first constraint surface and the second constraint surface are planes.

[0025] Preferably, the abutment and the tank body are an integral structure.

[0026] Compared with existing technologies, this utility model eliminates the hinge seat, connecting pin, strip pin groove, and additional locking structure in the traditional "operating rod-connecting rod-piston" transmission by using a novel pumping unit structure, significantly reducing the number of parts. In the assembly process, cumbersome welding, pin connection, and other processes are no longer required, significantly simplifying the assembly process, reducing assembly error rates, and shortening assembly time. From a cost perspective, the reduced number of parts means a corresponding decrease in the types and quantities of individually processed components, while also reducing quality inspection costs for component precision. This effectively reduces overall production costs from the source, balancing structural simplicity with production economy. Attached Figure Description

[0027] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0028] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0029] Figure 3 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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).

[0036] 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.

[0037] 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.

[0038] See Figures 1-3 A novel oil pumping unit structure includes a tank body 10, a pipe fitting 20, a sealing piston 30, a connecting rod 40, an elastic element 50, a cam element 60, and an operating handle 70. The pipe fitting 20 is fixedly connected to the tank body 10. The lower end of the pipe fitting 20 is open. The pipe fitting 20 has a communication port 210 that communicates with the interior of the tank body 10. A sealing boss 810 is located below the communication port 210, and the sealing piston 30 is vertically movable below the sealing boss 810. The connecting rod 40 is connected to the sealing piston 30 and is vertically movable relative to the pipe fitting 20. The connecting rod 40 extends through the pipe fitting 20 to the top of the tank body 10. The tank body 10 has an abutment member 110, and the cam element 60 is rotatably connected to the connecting rod 40 and can abut against the upper surface of the abutment member 110. The operating handle 70 is connected to the cam element 60.

[0039] The cam component 60 is provided with a first constraint surface 610 and a second constraint surface 620;

[0040] When the first constraint surface 610 abuts against the upper surface of the abutment member 110, the sealing piston 30 is in the sealing position, and the sealing piston 30 and the sealing boss 810 are in contact with each other.

[0041] When the second constraint surface 620 abuts against the upper surface of the abutting member 110, the sealing piston 30 is in the communicating position, and the sealing piston 30 is separated from the sealing boss 810.

[0042] The elastic element 50 is used to apply a downward force to the connecting rod 40 to drive the sealing piston 30 to move from the sealing position to the communicating position.

[0043] This novel oil pump structure employs existing mature vacuum negative pressure oil extraction technology in the oil extraction stage. By creating a negative pressure environment by drawing a vacuum inside the tank, the tank is connected to the vehicle's oil chamber via pipeline. Utilizing the pressure difference between the tank and the oil chamber, the vehicle's oil is smoothly drawn into the tank, completing the core oil extraction process.

[0044] During the oil extraction process and the oil storage stage, the equipment must be kept sealed: the operating handle drives the cam component to rotate, so that the first constraint surface of the cam component abuts against the upper surface of the tank's contact part. At this time, the cam component generates an upward force on the connecting rod, overcoming the downward force of the elastic element on the connecting rod, driving the connecting rod to move upward, and then pulling the sealing piston to the sealing position, where it tightly fits against the sealing boss below the pipe fitting's connection port, blocking the connection between the inside of the tank and the lower opening of the pipe fitting, ensuring that the tank maintains a good sealing state, providing the necessary sealed environment for vacuum negative pressure oil extraction, and ensuring oil extraction efficiency and effect.

[0045] When oil extraction is complete and drainage is required, rotate the operating handle to make the cam rotate synchronously until the second constraint surface of the cam abuts against the upper surface of the contact part. At this time, the upward force of the cam on the connecting rod weakens or disappears, and the downward force of the elastic element on the connecting rod is released, driving the connecting rod to move downward, causing the sealing piston to descend to the communication position and separate from the sealing boss. The inside of the tank forms a passage with the pipe through the communication port, and the oil collected in the tank can then be smoothly discharged into the collection bucket from the lower opening of the pipe, completing the drainage operation. The entire process can be quickly switched between sealing and drainage by simply rotating the operating handle. It relies on mature vacuum negative pressure oil extraction technology to ensure oil extraction effect, and the optimized structural design makes it easy to operate, combining reliability and practicality.

[0046] In the first embodiment of this invention, the sealing boss 810 is disposed on the inner wall of the pipe fitting 20. When the sealing boss 810 is disposed on the inner wall of the pipe fitting 20, its core function is to serve as a reference component for the sealing piston 30, accurately realizing the switching between sealing and connection of the tank 10. During the sealing stage of oil extraction and oil storage, the sealing piston 30 rises to the sealing position, which can fit tightly with the sealing boss 810 on the inner wall of the pipe fitting 20, reliably blocking the passage between the inside of the tank 10 and the lower opening of the pipe fitting 20 through the connecting port 210, ensuring that the tank 10 maintains a vacuum negative pressure environment to ensure the oil extraction effect; during the drainage stage, the sealing piston 30 descends and separates from the sealing boss 810, which can quickly open the connection channel between the inside of the tank 10 and the pipe fitting 20, allowing the oil to drain smoothly. At the same time, relying on the installation position on the inner wall of the pipe fitting, the matching accuracy between the sealing boss 810 and the sealing piston 30 is ensured, improving the stability of sealing and drainage.

[0047] In this invention, in a second embodiment of the sealing boss 810, the lower end of the pipe fitting 20 is connected to a connector 80, and the sealing boss 810 is disposed on the inner wall of the connector 80. When the sealing boss 810 is disposed on the inner wall of the connector 80 connected to the lower end of the pipe fitting 20, its core function is still to cooperate with the sealing piston 30 to achieve the switching between sealing and connection of the tank 10. During the sealing stage, the sealing piston 30 rises to the sealing position and fits tightly with the sealing boss 810 on the inner wall of the connector 80, blocking the passage between the tank 10 and the outside through the connection port 210 and the pipe fitting 20, ensuring a vacuum negative pressure environment in the tank; during the drainage stage, the sealing piston 30 descends and separates, quickly opening the oil drainage channel. In addition, integrating the sealing boss 810 into the connector 80 simplifies the processing of the pipe fitting 20 and allows for adaptation to various drainage scenarios by replacing different connectors, improving structural flexibility.

[0048] See Figure 3 The upper surface of the tank body 10 is provided with a first opening 120; a sealing plug 200 connected to the upper end of the pipe fitting 20 is provided in the first opening 120; the upper end of the connecting rod 40 extends upward through the sealing plug 200. The first opening 120 on the upper surface of the tank body 10 provides an installation channel for the connection between the pipe fitting 20 and the tank body 10, and facilitates the connecting rod 40 to extend above the tank body 10; the sealing plug 200 connected to the upper end of the pipe fitting 20 in the first opening 120 can seal the gap between the pipe fitting 20 and the first opening 120, ensuring a stable vacuum negative pressure environment inside the tank body 10, and can also guide the connecting rod 40, ensuring smooth up and down movement of the connecting rod 40, and providing support for the sealing piston 30 to accurately switch between sealing and connection positions.

[0049] In this invention, the lower surface of the tank body 10 is provided with a second opening 130, and the connector 80 is connected to the second opening 130.

[0050] In this utility model, the abutting member 110 is a shell with an opening at the lower end, and the first constraint surface 610 or the second constraint surface 620 abuts against the upper surface of the shell.

[0051] See Figure 3 The elastic element 50 is disposed within the housing, and the connecting rod 40 is provided with a connecting member 410. The elastic element 50 is a spring and is sleeved on the connecting rod 40 between the inner top surface of the housing and the connecting member 410. The spring (elastic element 50) sleeved on the connecting rod 40 between the inner top surface of the housing and the connecting member 410 can stably apply a downward force to the connecting rod 40. This force can be transmitted to the connecting rod 40 through the connecting member 410. When the cam member 60 switches to the abutment state of the second constraint surface 620, it drives the connecting rod 40 to move downward, thereby pushing the sealing piston 30 to separate from the sealing boss 810, ensuring stable conduction of the drainage passage and providing reliable power support for the drainage action. Of course, in addition to this, the elastic element 50 can also be installed using existing technology, which only needs to provide a downward force to the connecting rod 40.

[0052] See Figure 3 A sealing piston 90 is fixedly connected to the connecting rod 40 above the connecting port 210, and the sealing piston 90 is in close contact with the inner wall of the pipe fitting 20. Because the sealing piston 90, fixed to the connecting rod 40 above the connecting port 210, is in close contact with the inner wall of the pipe fitting 20, it can block the connection between the vacuum environment inside the tank 10 and the upper space of the pipe fitting 20 during the oil extraction stage, preventing vacuum leakage, ensuring stable negative pressure in the tank, and ensuring efficient oil intake. Simultaneously, during the drainage stage, it can move synchronously with the connecting rod 40 to prevent oil from overflowing from above the connecting port 210, maintaining the sealing of the drainage passage and the stability of the drainage process.

[0053] In this invention, both the first constraint surface 610 and the second constraint surface 620 are planar: during oil extraction, the planar first constraint surface can fit tightly with the abutment 110 to form a stable support, preventing the cam 60 from flipping arbitrarily, thereby ensuring that the sealing piston 30 fits the sealing boss 810; during drainage, the planar second constraint surface also fits well with the abutment 110, firmly restricting the position of the cam 60, ensuring that the sealing piston 30 is accurately in the communication position, and improving the structural stability throughout the process.

[0054] In this utility model, the abutment 110 and the tank body 10 are an integral structure.

[0055] 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 novel structure of a pumping unit, characterized by: It includes a tank body (10), pipe fittings (20), sealing piston (30), connecting rod (40), elastic element (50), cam component (60), and operating handle (70); The pipe fitting (20) is fixedly connected to the tank body (10); the lower end of the pipe fitting (20) is open; the pipe fitting (20) is provided with a communication port (210) that communicates with the inside of the tank body (10); a sealing boss (810) is provided below the communication port (210), and the sealing piston (30) is moved up and down and is located below the sealing boss (810); The connecting rod (40) is connected to the sealing piston (30) and is movable up and down relative to the pipe fitting (20); the connecting rod (40) extends through the pipe fitting (20) to the top of the tank body (10); The tank body (10) is provided with an abutment (110), the cam (60) is rotatably connected to the connecting rod (40) and can abut against the upper surface of the abutment (110); the operating handle (70) is connected to the cam (60); The cam component (60) is provided with a first constraint surface (610) and a second constraint surface (620); When the first constraint surface (610) abuts against the upper surface of the abutment (110), the sealing piston (30) is in the sealing position, and the sealing piston (30) and the sealing boss (810) are in contact with each other; When the second constraint surface (620) abuts against the upper surface of the abutment (110), the sealing piston (30) is in the communicating position, and the sealing piston (30) and the sealing boss (810) are separated from each other; The elastic element (50) is used to apply a downward force to the connecting rod (40) to drive the sealing piston (30) to move from the sealing position to the communicating position.

2. The novel oil pumping unit structure according to claim 1, characterized in that: The sealing boss (810) is disposed on the inner wall of the pipe fitting (20).

3. The novel oil pumping unit structure according to claim 1, characterized in that: The lower end of the pipe fitting (20) is connected to a connector (80), and the sealing boss (810) is disposed on the inner wall of the connector (80).

4. The novel oil pumping unit structure according to claim 1, characterized in that: The upper surface of the tank (10) is provided with a first opening (120); a sealing plug (200) connected to the upper end of the pipe fitting (20) is provided in the first opening (120); the upper end of the connecting rod (40) extends upward through the sealing plug (200).

5. The novel oil pumping unit structure according to claim 3, characterized in that: The lower surface of the tank (10) is provided with a second opening (130), and the connector (80) is connected to the second opening (130).

6. The novel oil pumping unit structure according to claim 1, characterized in that: The abutment (110) is a shell with an opening at the lower end, and the first constraint surface (610) or the second constraint surface (620) abuts against the upper surface of the shell.

7. The novel oil pumping unit structure according to claim 6, characterized in that: The elastic element (50) is disposed inside the housing, and the connecting rod (40) is provided with a connector (410). The elastic element (50) is a spring and is sleeved on the connecting rod (40) between the top surface of the housing and the connector (410).

8. The novel oil pumping unit structure according to claim 1, characterized in that: A closed piston (90) is fixedly connected to the connecting rod (40) above the connecting port (210), and the closed piston (90) is in contact with the inner wall of the pipe (20).

9. The novel oil pumping unit structure according to claim 1, characterized in that: Both the first constraint surface (610) and the second constraint surface (620) are planes.

10. The novel oil pumping unit structure according to claim 1, characterized in that: The abutment (110) and the tank (10) are an integral structure.

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