Liquid level measuring structure for filling lubricating grease

Abstract

The utility model discloses a liquid level measuring structure for lubricating grease filling, which comprises a positioning shell arranged on a filling head, a vertically arranged mounting cavity is arranged in the positioning shell, and a pressure sensor is arranged at the top of the mounting cavity. A mounting cavity is formed in the positioning shell, a hollow pipe of which the top is in contact with a pressure detection surface of the pressure sensor is mounted in the mounting cavity, the hollow pipe is vertically and downwards arranged, an anti-falling block is arranged on the hollow pipe, and a limiting end cover for limiting the anti-falling block is arranged at the bottom end part of the mounting cavity on the positioning shell; the hollow pipe penetrates through the limiting end cover, and a hollow floating ball is mounted at the bottom of the hollow pipe through a dismounting mechanism; upward buoyancy of lubricating grease on the hollow floating ball is applied to the pressure sensor through the hollow pipe, the pressure sensor senses pressure increase, a filling full signal is triggered, filling needs to be stopped, and the device has the advantages of being simple in structure and good in measurement effect.

Description

Technical Field

[0001] This utility model relates to the technical field of grease filling, specifically a liquid level measuring structure for grease filling. Background Technology

[0002] Grease is a liquid or semi-solid lubricant used in various types of automobiles and machinery to reduce friction and protect machinery and processed parts. Its main functions include lubrication, cooling, rust prevention, cleaning, sealing, and buffering. A crucial step in grease production is filling; however, during filling, it's necessary to monitor the grease level to prevent overflow. Current methods for detecting grease levels include pressure sampling, atmospheric pressure sampling, and level sensing. Pressure and atmospheric pressure methods require high sealing accuracy during filling, demanding precise filling equipment. Level sensing methods do not require such sealing. Currently, there is no commercially available structure for measuring grease levels during filling. Therefore, we provide a grease level measurement structure for grease filling. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a liquid level measurement structure for grease filling.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a liquid level measurement structure for grease filling, including a positioning housing on a filling head, a vertically arranged mounting cavity inside the positioning housing, a pressure sensor at the top of the mounting cavity, a hollow tube with its top in contact with the pressure detection surface of the pressure sensor installed inside the mounting cavity, the hollow tube being vertically downward and equipped with an anti-detachment block, and a limiting end cap at the bottom of the positioning housing for limiting the anti-detachment block, the hollow tube passing through the limiting end cap, and a hollow float ball installed at the bottom of the hollow tube via a disassembly mechanism, the pressure sensor being connected to the controller of the filling equipment.

[0006] As a preferred embodiment of this utility model, a tightening spring is installed between the anti-detachment block and the limiting end cap.

[0007] As a preferred technical solution of this utility model, the disassembly mechanism includes a connecting pipe disposed at the bottom of the hollow tube and vertically downward, and the connecting pipe has an insertion cavity inside, and the hollow float is provided with an insertion tube inserted into the insertion cavity, and the insertion cavity is threadedly connected to the insertion tube.

[0008] As a preferred embodiment of this utility model, the insertion tube is provided with an external thread structure, and the inner end of the insertion cavity is provided with an internal thread mechanism that cooperates with the external thread structure. The insertion tube is also provided with a locking cap that is threaded onto the insertion tube.

[0009] As a preferred embodiment of this utility model, the hollow float is a long cylindrical shape, and both the bottom and top ends of the hollow float are arched guide ends.

[0010] As a preferred embodiment of this utility model, the top of the hollow tube is provided with a rubber anti-wear layer on the side that contacts the pressure sensor.

[0011] As a preferred embodiment of this invention, the surface of the hollow float is a smooth mirror surface.

[0012] The beneficial effects of this utility model are:

[0013] 1. This type of grease filling level measurement structure includes a hollow float installed at the bottom of a hollow tube via a disassembly mechanism. The hollow float is at a certain distance from the outlet end of the filling head. During the filling process, as the grease level rises in the container, it comes into contact with the hollow float at the container opening. The float then becomes submerged in the grease, and the upward buoyancy of the grease on the float is applied to a pressure sensor through the hollow tube. The pressure sensor detects the increased pressure and triggers a signal indicating that the filling is full, requiring the filling to stop. This structure features simple design and good measurement performance.

[0014] 2. In this type of grease filling level measurement structure, a tightening spring is installed between the anti-detachment block and the limiting end cap. The tightening spring pushes the anti-detachment block upward, so that the top of the hollow tube is in close contact with the pressure detection surface of the pressure sensor. The tightening spring has an upward force, which avoids the forces of the hollow tube and the disassembly mechanism canceling out the upward buoyancy of the grease on the hollow float, which would result in little change in the pressure value detected by the pressure sensor, making it difficult to trigger the pressure sensor and reducing the sensitivity of the level measurement.

[0015] 3. In this type of grease filling liquid level measurement structure, the insertion tube is provided with an external thread structure, and the inner end of the insertion cavity is provided with an internal thread mechanism that mates with the external thread structure. The insertion tube is also provided with a locking cap threaded onto the insertion tube. This allows for adjustment of the length of the insertion tube inserted into the insertion cavity and locking with the locking cap, thereby adjusting the height of the hollow float to meet different liquid level measurement requirements. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a liquid level measuring structure for grease filling according to the present invention;

[0018] Figure 2 This is a measurement state diagram of a grease filling level measurement structure according to this utility model;

[0019] Figure 3 This is a schematic diagram of the insertion tube of a grease filling liquid level measuring structure according to the present invention.

[0020] In the diagram: 1. Filling head; 2. Positioning housing; 3. Mounting cavity; 4. Pressure sensor; 5. Hollow tube; 6. Anti-detachment block; 7. Limiting end cap; 8. Hollow float; 9. Tightening spring; 10. Connecting tube; 11. Insertion cavity; 12. Insertion tube; 13. External thread structure; 14. Internal thread mechanism; 15. Locking cap. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] Example: Figure 1 , Figure 2 , Figure 3As shown, this utility model discloses a grease filling level measurement structure, including a positioning housing 2 on a filling head 1, and a vertically arranged mounting cavity 3 inside the positioning housing 2. A pressure sensor 4 is provided at the top of the mounting cavity 3. A hollow tube 5 with its top in contact with the pressure detection surface of the pressure sensor 4 is installed inside the mounting cavity 3. The hollow tube 5 is arranged vertically downward and has an anti-detachment block 6. A limiting end cap 7 is provided on the bottom end of the mounting cavity 3 to limit the anti-detachment block 6. The hollow tube 5 passes through the limiting end cap 7. A hollow float ball 8 is installed at the bottom of the hollow tube 5 via a disassembly mechanism. The pressure sensor 4 is connected to the controller of the filling equipment. A hollow float 8 is installed at the bottom of the hollow tube 5 via a disassembly mechanism. The hollow float 8 is at a certain distance from the liquid outlet end of the filling head 1. During the process of filling the container with grease, as the liquid level of the grease in the container rises to the container opening, it comes into contact with the hollow float 8. The hollow float 8 then begins to be submerged in the grease. The upward buoyancy of the grease on the hollow float 8 is applied to the pressure sensor 4 through the hollow tube 5. The pressure sensor 4 senses the increased pressure and triggers a signal indicating that the filling is full, requiring the filling to be stopped. This design features a simple structure and good measurement effect. The pressure sensor 4 senses the increased pressure and triggers a signal indicating that the filling is full, and transmits this signal to the controller, which then controls the filling valve to close, stopping the filling and preventing grease from overflowing.

[0023] A clamping spring 9 is installed between the anti-detachment block 6 and the limiting end cap 7. The clamping spring 9 pushes the anti-detachment block 6 upward, so that the top of the hollow tube 5 is in close contact with the pressure detection surface of the pressure sensor 4. The clamping spring 9 has an upward force, which avoids the force of the hollow tube 5 and the disassembly mechanism itself being canceled out by the upward buoyancy of the lubricant on the hollow float 8, which would result in the pressure value detected by the pressure sensor 4 not changing much, making it difficult to trigger the pressure sensor 4 and reducing the sensitivity of the liquid level measurement.

[0024] The disassembly mechanism includes a connecting pipe 10 located at the bottom of the hollow tube 5 and pointing vertically downwards. The connecting pipe 10 has an insertion cavity 11 inside, and the hollow float 8 has an insertion tube 12 inserted into the insertion cavity 11. The insertion cavity and the insertion tube 12 are threadedly connected to each other for easy disassembly and assembly.

[0025] The insertion tube 12 is provided with an external thread structure 13, and the inner end of the insertion cavity 11 is provided with an internal thread mechanism 14 that mates with the external thread structure 13. The insertion tube 12 is also provided with a locking cap 15 threaded onto it. This allows for adjustment of the length of the insertion tube 12 inserted into the insertion cavity 11, and locking it with the locking cap 15, thereby adjusting the height of the hollow float 8 to meet different liquid level measurement requirements.

[0026] The hollow float 8 is a long cylindrical shape, with arched guide ends at both its bottom and top. The top of the hollow tube 5 has a rubber anti-wear layer on the side that contacts the pressure sensor, providing wear protection. The surface of the hollow float 8 is a smooth mirror finish.

[0027] During operation, this grease filling level measurement structure has a hollow float 8 installed at the bottom of the hollow tube 5 via a disassembly mechanism. The hollow float 8 is at a certain distance from the liquid outlet end of the filling head 1. During the process of filling the container with grease, as the grease level in the container rises to the container opening, it comes into contact with the hollow float 8, and the hollow float 8 begins to be submerged in the grease. The upward buoyancy of the grease on the hollow float 8 is applied to the pressure sensor 4 through the hollow tube 5. The pressure sensor 4 senses the increased pressure and triggers a signal indicating that the filling is full, requiring the filling to be stopped. It features a simple structure and good measurement effect.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid level measuring structure for grease filling, characterized in that, The device includes a positioning housing (2) on a filling head (1), and a vertically arranged mounting cavity (3) inside the positioning housing (2). A pressure sensor (4) is provided at the top of the mounting cavity (3). A hollow tube (5) with its top in contact with the pressure detection surface of the pressure sensor (4) is installed inside the mounting cavity (3). The hollow tube (5) is arranged vertically downward. An anti-detachment block (6) is provided on the hollow tube (5). A limiting end cap (7) is provided at the bottom end of the mounting cavity (3) to limit the anti-detachment block (6). The hollow tube (5) passes through the limiting end cap (7). A hollow float (8) is installed at the bottom of the hollow tube (5) via a disassembly mechanism. The pressure sensor (4) is connected to the controller of the filling equipment.

2. The grease filling level measuring structure according to claim 1, characterized in that, A clamping spring (9) is installed between the anti-detachment block (6) and the limiting end cap (7).

3. The grease filling level measuring structure according to claim 1, characterized in that, The disassembly mechanism includes a connecting pipe (10) located at the bottom of the hollow tube (5) and pointing vertically downwards. The connecting pipe (10) has an insertion cavity (11) inside. The hollow float (8) has an insertion tube (12) inserted into the insertion cavity (11), and the insertion cavity and the insertion tube (12) are threadedly connected.

4. The grease filling level measuring structure according to claim 3, characterized in that, The insertion tube (12) is provided with an external thread structure (13), and the inner end of the insertion cavity (11) is provided with an internal thread mechanism (14) that cooperates with the external thread structure (13). The insertion tube (12) is also provided with a locking cap (15) threaded on the insertion tube (12).

5. The grease filling level measuring structure according to claim 1, characterized in that, The hollow float (8) is a long cylindrical shape, and the bottom and top ends of the hollow float (8) are both arched guide ends.

6. The grease filling level measuring structure according to claim 1, characterized in that, The top of the hollow tube (5) is provided with a rubber anti-wear layer on the side that contacts the pressure sensor.

7. The grease filling level measuring structure according to claim 1, characterized in that, The surface of the hollow float (8) is a smooth mirror.

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