A detector for the oxidation stability of lubricating greases

Abstract

The utility model relates to the technical field of grease oxidation detection, disclose a kind of detector for grease oxidation stability, including general control store, the general control store outer wall is provided with display screen and button, the general control store outer wall is fixedly connected with connecting column one, the connecting column one outer wall one side is fixedly connected with detection store, the detection store inner wall is provided with ejector assembly, the detection store outer wall is provided with temperature table, the detection store inside is provided with conveying device, heating device and heat dissipation, the ejector assembly includes push block, the push block outer wall sliding connection is in the detection store inner wall, the detection store inner wall is provided with fixed component, the detection store inner wall is fixedly connected with fixed plate, in the utility model, by pushing the push block in detection store, by the blocking of fixed plate and the connection of limiting block, fixed block three and sliding block are close to fixed block one, the cooperation of sliding groove one and sliding groove two is used to ensure that fixed block is stably contacted.

Description

Technical Field

[0001] This utility model relates to the field of grease oxidation detection technology, and in particular to a grease oxidation stability tester. Background Technology

[0002] As a key material for lubricating mechanical equipment, the oxidation stability of lubricating grease directly affects the service life and operational stability of the equipment. Under the influence of environmental factors such as high temperature and oxygen, lubricating grease is prone to oxidation and deterioration, leading to a decline in lubrication performance and even equipment failure. Therefore, accurate testing of the oxidation stability of lubricating grease is an important step in ensuring safe equipment operation and optimizing grease selection.

[0003] In existing technologies, grease oxidation stability testing instruments typically consist of a heating chamber, a temperature control mechanism, an oxygen supply device, and a sample vessel. The heating chamber employs a sealed design and contains internal heating elements to precisely control the chamber temperature. The oxygen supply device delivers a measured amount of oxygen to the heating chamber through pipelines, simulating an oxidation environment. The sample vessel holds the grease to be tested and is placed directly on a support platform inside the heating chamber. The technical principle is to place the grease in the sample vessel into the heating chamber at a set temperature and oxygen concentration. After a certain period of oxidation, the vessel is removed, and changes in indicators such as acid value and dropping point of the grease are measured to determine its oxidation stability.

[0004] However, in existing testing instruments, because the sample vessels are placed directly on the support platform of the heating chamber, after prolonged high-temperature heating, the bottom of the vessel tends to thermally adhere to the support platform. Furthermore, the vessel itself is extremely hot, making it difficult for operators to handle it directly by hand. Using tools to remove it at this point is not only inconvenient but also risks causing the vessel to tilt or fall due to improper force, resulting in spillage of the lubricating grease sample, affecting the accuracy of the test results, and even posing safety risks due to the splashing of hot liquid, causing numerous problems for the testing work. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a tester for the oxidation stability of lubricating grease, which aims to improve the problem that after prolonged high-temperature heating, the bottom of the container and the support platform become thermally stuck together, and the container itself is extremely hot, making it difficult for operators to handle directly by hand.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grease oxidation stability tester, comprising a main control chamber, a display screen and buttons on the outer wall of the main control chamber, a connecting column fixedly connected to the outer wall of the main control chamber, a test chamber fixedly connected to one side of the outer wall of the connecting column, an ejection assembly on the inner wall of the test chamber, a temperature gauge on the outer wall of the test chamber, and a conveying device, a heating device and a heat dissipation vent inside the test chamber; The ejection assembly includes a pushing block, the outer wall of which is slidably connected to the inner wall of the detection chamber. The inner wall of the detection chamber is provided with a fixing assembly, a fixing plate is fixedly connected to the inner wall of the detection chamber, a fixing block one is fixedly connected to the inner wall of the detection chamber, a limit block is fixedly connected to the outer wall of the pushing block, a fixing block three and a sliding block are slidably connected to the outer wall of the limit block, an inclined block one is fixedly connected to the outer wall of the sliding block, a sliding groove one is opened inside the fixing block three, and a sliding groove two is opened inside the sliding block.

[0007] Furthermore, the fixing component includes a second fixing block, the outer wall of which is fixedly connected to the inner wall of the detection chamber, a first spring fixedly connected to the inner wall of the second fixing block, a ball fixedly connected to one end of the first spring, and a fixing rod fixedly connected to the outer wall of the pushing block.

[0008] Furthermore, a placement chamber is slidably connected to the inner wall of the detection chamber, and a pad is provided on the outer wall of the placement chamber.

[0009] Furthermore, the outer wall of the pad is provided with a cover, and the inner wall of the cover is slidably connected with a connecting column two.

[0010] Furthermore, a third connecting column is fixedly connected inside the second connecting column, and a fourth connecting column is slidably connected to the outer wall of the third connecting column.

[0011] Furthermore, a second spring is fixedly connected to the outer wall of the third connecting column, and one end of the second spring is fixedly connected to the inner wall of the second connecting column.

[0012] Furthermore, a pressing column is fixedly connected to the outer wall of the fourth connecting column, and a slot is opened inside the fourth connecting column.

[0013] Furthermore, a sphere is provided on the outer wall of the connecting column four, and an inclined block is fixedly connected to the outer wall of the placement compartment.

[0014] This utility model has the following beneficial effects: In this invention, by pushing the push block inside the detection chamber, and with the help of the blocking of the fixed plate and the connection of the limiting block, the fixed block three and the sliding block approach the fixed block one. The cooperation of the sliding groove one and the sliding groove two ensures that the fixed block is stably in contact. At the same time, the sliding block slides up and pushes the placement chamber through the inclined block one and the inclined block two to achieve rapid ejection. After ejection, the fixed rod, in conjunction with the spring one and the ball one inside the fixed block two, achieves stable fixation through the continuous force of the spring, so that the placement chamber is always exposed to the air, accelerating the cooling process. This simplifies the ejection operation, improves the cooling efficiency, and ensures the timeliness of sample processing after detection.

[0015] In this invention, the operator can press the pressing column to drive the connecting column four downward, causing the spring two to compress and store energy, thereby driving the connecting column two to disengage from the groove on the inner wall of the placement chamber. The ball two then engages with the slot of the connecting column four, releasing the connection between the placement chamber, the pad, and the cover. This process requires no complicated operation; the cover can be disassembled simply by pressing. By utilizing the elastic potential energy of the spring and the interlocking cooperation between the components, the cover can be quickly opened and stably locked, greatly improving the convenience of sample handling after testing, reducing operation time, and increasing testing efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a grease oxidation stability tester proposed in this utility model; Figure 2 This is a schematic diagram of the heat dissipation port portion of a grease oxidation stability tester proposed in this utility model; Figure 3 This is a schematic diagram of the detection chamber of a grease oxidation stability tester proposed in this utility model; Figure 4 This is a schematic diagram of the push block structure of a grease oxidation stability tester proposed in this utility model; Figure 5 This is a schematic diagram of the placement chamber of a grease oxidation stability tester proposed in this utility model; Figure 6 for Figure 5 Enlarged view of point A in the image.

[0017] Legend: 1. Testing chamber; 2. Thermometer; 3. Central control chamber; 4. Display screen; 5. Conveying device; 6. Button; 7. Connecting column one; 8. Heat dissipation vent; 9. Fixing rod; 10. Fixing plate; 11. Fixing block one; 12. Heating device; 13. Fixing block two; 14. Spring one; 15. Pushing block; 16. Limiting block; 17. Fixing block three; 18. Sliding block; 19. Inclined block one; 20. Sliding groove one; 21. Sliding groove two; 22. Ball one; 23. Placement chamber; 24. Pad block; 25. Inclined block two; 26. Cover; 27. Pressing column; 28. Connecting column two; 29. ​​Connecting column three; 30. Spring two; 31. Ball two; 32. Slot; 33. Connecting column four. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 This utility model provides an embodiment of a grease oxidation stability tester, comprising a main control chamber 3. A display screen 4 and buttons 6 are mounted on the outer wall of the main control chamber 3. The display screen 4, mounted on the outer wall of the main control chamber 3, serves as an important interactive window between the equipment and the operator. The buttons 6, also located on the outer wall of the main control chamber 3, are direct operating components for the operator to issue commands to the equipment. A connecting column 7 is fixedly connected to the outer wall of the main control chamber 3. The connecting column 7 is a key component connecting the main control chamber 3 and the testing chamber 1, firmly connecting the two chambers together and ensuring the stability of the overall equipment structure. A detection chamber 1 is fixedly connected to one side of the wall. An ejection assembly is installed on the inner wall of the detection chamber 1, and a thermometer 2 is installed on the outer wall of the detection chamber 1. The thermometer 2 is installed on the outer wall of the detection chamber 1 and is used to monitor the temperature inside the detection chamber 1 in real time. The detection chamber 1 is equipped with a conveying device 5, a heating device 12, and a heat dissipation vent 8. The heating device 12 is installed inside the detection chamber 1 and is a key component that provides the required temperature environment for the detection chamber 1. The heat dissipation vent 8 is opened on the outer wall of the detection chamber 1 and its main function is to dissipate excess heat when the temperature inside the detection chamber 1 is too high or after the detection is completed, so that the temperature inside the detection chamber 1 can be quickly reduced to a normal level. The ejection assembly includes a push block 15, which drives the ejection assembly to move. When the operator pushes the push block 15, it drives components such as the fixed block 17 and the sliding block 18 to move together, providing power for the ejection action. The outer wall of the push block 15 is slidably connected to the inner wall of the detection chamber 1. The inner wall of the detection chamber 1 is provided with a fixing assembly, and a fixing plate 10 is fixedly connected to the inner wall of the detection chamber 1. The fixing plate 10 is used to block and limit the components in the ejection assembly, restricting the range of motion of the fixed block 17 and the sliding block 18, and ensuring that they move along a preset trajectory. A fixing block 11 is fixedly connected to the inner wall of the detection chamber 1. The fixing block 11 is used to cooperate with the fixed block 17 to form a resisting position. When the fixed block 17 approaches and contacts the fixing block 11, the two interact to limit the further movement of the fixed block 17 and provide a trigger for the upward sliding of the sliding block 18. The component comprises a limiting block 16 fixedly connected to the outer wall of the pushing block 15. A fixed block 17 and a sliding block 18 are slidably connected to the outer wall of the limiting block 16. The limiting block 16 slides in conjunction with the fixed block 17 and the sliding block 18, moving within sliding grooves 20 and 21. This allows the fixed block 17 and the sliding block 18 to move in a specific direction, while ensuring that the fixed block 17 always abuts against the fixed block 11, providing stable guidance for the upward sliding of the sliding block 18. An inclined block 19 is fixedly connected to the outer wall of the sliding block 18. Sliding grooves 20 and 21 are formed inside the fixed block 17 and the sliding block 18, respectively. These sliding grooves 20 and 21 slide in conjunction with the limiting block 16, providing a trajectory for the movement of the limiting block 16 within the fixed block 17, ensuring that the limiting block 16 drives the fixed block 17 to move along a preset path. The fixing component includes a second fixing block 13, the outer wall of which is fixedly connected to the inner wall of the detection chamber 1. The second fixing block 13 provides a mounting base for the first spring 14. Through its fixed connection with the inner wall of the detection chamber 1, it ensures that the first spring 14 and the ball 22 maintain a stable position during operation, providing structural support for the locking function of the fixing component. The inner wall of the second fixing block 13 is fixedly connected to the first spring 14. The first spring 14 cooperates with the ball 22 to perform elastic expansion and contraction. When the ball 22 is squeezed by the fixing rod 9, the first spring 14 will undergo compression deformation and store elastic potential energy. When the fixing rod 9 moves to the corresponding position, the elastic restoring force of the first spring 14 will push the ball 22 into close contact with the fixing rod 9, achieving the effect of fixing the push block 15 and preventing the placement chamber 23 from accidentally resetting after being pushed out. One end of the first spring 14 is fixedly connected to the ball 22. The ball 22 is used to enhance the locking effect between the fixing rod 9 and the second fixing block 13. The outer wall of the push block 15 is fixedly connected to the fixing rod 9.

[0020] Specifically, the ejection assembly includes a pusher block 15, whose outer wall slides against the inner wall of the detection chamber 1, which can drive the fixed block 17, the sliding block 18, etc. to provide ejection power. The inner wall of the detection chamber 1 has a fixed assembly, and also a fixed plate 10 and a fixed block 11. The fixed block 11 and the fixed block 17 are positioned against each other, providing a trigger condition for the sliding block 18 to slide upward. The outer wall of the pusher block 15 is fixed with a limiting block 16, which slides against the fixed block 17 and the sliding block 18, and slides in the sliding groove 20 and the sliding groove 21, driving the component to move and guide. The outer wall of the sliding block 18 is connected to the inclined block 19. The sliding groove 20 and the sliding groove 21 are respectively opened in the fixed block 3 17 and the sliding block 18. The fixing component includes the fixed block 2 13, which is fixed to the inner wall of the detection chamber 1 and provides an installation base for the spring 14. The inner wall of the fixed block is connected to the spring 14 and moves in conjunction with the ball 22. The fixed push block 15 prevents the placement chamber 23 from being accidentally reset. One end of the spring 14 is connected to the ball 22 to enhance the locking effect. The outer wall of the push block 15 is fixed with the fixing rod 9.

[0021] Reference Figures 1-6The inner wall of the detection chamber 1 is slidably connected to a placement chamber 23. A pad 24 is provided on the outer wall of the placement chamber 23, and a cover 26 is provided on the outer wall of the pad 24. A connecting post 28 is slidably connected to the inner wall of the cover 26. The connecting post 28 slides in conjunction with a connecting post 33. The connecting post 33 can slide along the inner wall of the connecting post 28, providing guidance for the pressing action of the pressing post 27 and ensuring the stability of the movement direction of the pressing post 27, thereby realizing the locking and unlocking function of the cover 26. A connecting post 29 is fixedly connected inside the connecting post 28. 29 is used to fix spring 2 30. One end of it is fixedly connected to the inner wall of connecting post 2 28, providing a stable support point for spring 2 30. This allows spring 2 30 to deform and return to its original position stably when connecting post 4 33 slides, ensuring the normal operation of the locking mechanism of cover 26. Connecting post 4 33 is slidably connected to the outer wall of connecting post 3 29, and spring 2 30 is fixedly connected to the outer wall of connecting post 3 29. Spring 2 30 cooperates with connecting post 4 33 to perform elastic return movement. When pressing post 27 is pressed by external force, connecting post 4 33 compresses spring 2 30 and... After the external force is removed, the elastic restoring force of spring 2 30 pushes connecting post 4 33 to reset, thereby driving pressing post 27 back to its initial position, realizing the automatic restoration of the locked state of cover 26. One end of spring 2 30 is fixedly connected to the inner wall of connecting post 2 28, and pressing post 27 is fixedly connected to the outer wall of connecting post 4 33. Pressing post 27 is used to control the locking and unlocking of cover 26. By pressing pressing post 27, connecting post 4 33 can be slid, causing ball 2 31 to disengage from or enter the slot 32, thereby realizing the fixation between cover 26 and placement compartment 23. The cover 26 is easy to open and close quickly by fixing and separating the cover. The connecting post 33 has a slot 32 inside and a ball 31 on the outer wall of the connecting post 33. The outer wall of the placement chamber 23 is fixedly connected to the inclined block 25. The slot 32 engages with the ball 31. When the ball 31 is inserted into the slot 32, the connecting post 33 and the connecting post 28 can be fixed relative to each other, thereby locking the position of the cover 26 and preventing the cover 26 from being opened accidentally during the test. When the ball 31 is disengaged from the slot 32, the cover 26 can be unlocked and opened.

[0022] Specifically, the inner wall of the testing chamber 1 is slidably connected to the placement chamber 23, and the outer wall of the chamber is provided with a pad 24, and the pad 24 is covered with a cover 26. The inner wall of the cover 26 is slidably connected to the second connecting post 28, and the inner wall is fixed to the third connecting post 29, which is used to fix the second spring 30 and provide support. The outer wall of the third connecting post 29 is slidably connected to the fourth connecting post 33, and is connected to the second spring 30. One end of the second connecting post 29 is fixed to the inner wall of the second connecting post 28, and the fourth connecting post 33 is used to elastically reset. The outer wall of the fourth connecting post 33 is fixed to the pressing post 27, which controls the locking and unlocking of the cover 26. The inner wall has a slot 32, and the outer wall has a ball 31. The outer wall of the storage compartment 23 is fixed to the second inclined block 25. The second connecting post 28 and the fourth connecting post 33 slide together to guide the pressing post 27. The slot 32 and the ball 31 engage. When the ball is engaged, the cover 26 is locked. When it is disengaged, the cover is unlocked. When the pressing post 27 is pressed, the fourth connecting post 33 compresses the spring and slides. When the external force is removed, the second spring 30 is pushed to reset, so that the locked state of the cover 26 is automatically restored.

[0023] Working principle: In the existing testing of the oxidation stability of lubricating grease, firstly, by pushing the push block 15 inside the test chamber 1, the fixed block 17 and the sliding block 18 approach the fixed block 11 through the obstruction of the fixed plate 10 and the connection of the limiting block 16. When the fixed block 17 contacts the fixed block 11, the limiting block 16 keeps the fixed block against the fixed block 11 through the sliding groove 20 and sliding groove 21 inside the fixed block 17 and the sliding block 18, while the sliding block 18 will slide upward, thereby making the placement chamber 23 rise through the inclined block 19 and inclined block 25, thus realizing the ejection. After ejection, the fixed rod 9 outside the push block 15 and the spring 14 inside the fixed block 23 are connected by the fixed rod 9. One end of the spring 14 is provided with a ball 22. When the ball 22 contacts the fixed block 23, the spring 14 always releases force to the fixed rod 9, thus realizing the fixing effect, so that the placement chamber 23 can always be exposed to the air, thereby realizing rapid cooling. Secondly, when the test is completed and the cover 26 needs to be opened quickly, the operator only needs to press the pressing post 27 with their finger to apply downward pressure. Under the action of pressure, the connecting post 33 connected to the pressing post 27 moves downward. At this time, the spring 30 sleeved on the outside of the connecting post 29 is compressed and deformed, converting the external force into elastic potential energy and storing it. As the connecting post 33 moves downward, its position changes, and the connecting post 28 originally stuck in the groove on the inner wall of the placement chamber 23, as well as the inside of the placement chamber 23, are affected. The second ball 31, used for fixing, gradually slides and gets stuck in the pre-set slot 32 on the fourth connecting column 33 under the push of its own weight and the interaction force between the components. This releases the connection between the second connecting column 28 and the inner wall of the placement chamber 23. The second ball 31 also disengages from its original limiting position and forms a new fit with the slot 32 of the fourth connecting column 33. At this point, the connection between the placement chamber 23, the pad 24 and the cover 26 is completely released, and the operator can easily remove the cover 26 from the placement chamber 23.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tester for the oxidation stability of lubricating grease, comprising a main control chamber (3), characterized in that: The outer wall of the main control chamber (3) is provided with a display screen (4) and a button (6). A connecting column (7) is fixedly connected to the outer wall of the main control chamber (3). A detection chamber (1) is fixedly connected to one side of the outer wall of the connecting column (7). An ejection assembly is provided on the inner wall of the detection chamber (1). A thermometer (2) is provided on the outer wall of the detection chamber (1). A conveying device (5), a heating device (12), and a heat dissipation port (8) are provided inside the detection chamber (1). The ejection assembly includes a push block (15), the outer wall of which is slidably connected to the inner wall of the detection chamber (1). The inner wall of the detection chamber (1) is provided with a fixing assembly, a fixing plate (10) is fixedly connected to the inner wall of the detection chamber (1), a fixing block one (11) is fixedly connected to the inner wall of the detection chamber (1), a limit block (16) is fixedly connected to the outer wall of the push block (15), a fixing block three (17) and a sliding block (18) are slidably connected to the outer wall of the limit block (16), an inclined block one (19) is fixedly connected to the outer wall of the sliding block (18), a sliding groove one (20) is opened inside the fixing block three (17), and a sliding groove two (21) is opened inside the sliding block (18).

2. The grease oxidation stability tester according to claim 1, characterized in that: The fixing component includes a second fixing block (13), the outer wall of the second fixing block (13) is fixedly connected to the inner wall of the detection chamber (1), the inner wall of the second fixing block (13) is fixedly connected to a first spring (14), one end of the first spring (14) is fixedly connected to a first ball (22), and the outer wall of the push block (15) is fixedly connected to a fixing rod (9).

3. The grease oxidation stability tester according to claim 1, characterized in that: The inner wall of the detection chamber (1) is slidably connected to a placement chamber (23), and a pad (24) is provided on the outer wall of the placement chamber (23).

4. The grease oxidation stability tester according to claim 3, characterized in that: The outer wall of the pad (24) is provided with a cover (26), and the inner wall of the cover (26) is slidably connected with a connecting column (28).

5. The grease oxidation stability tester according to claim 4, characterized in that: The connecting column two (28) is fixedly connected to the connecting column three (29) inside, and the connecting column three (29) is slidably connected to the connecting column four (33) on its outer wall.

6. The grease oxidation stability tester according to claim 5, characterized in that: A spring (30) is fixedly connected to the outer wall of the connecting column three (29), and one end of the spring (30) is fixedly connected to the inner wall of the connecting column two (28).

7. The grease oxidation stability tester according to claim 5, characterized in that: The outer wall of the connecting column four (33) is fixedly connected to a pressing column (27), and a slot (32) is provided inside the connecting column four (33).

8. The grease oxidation stability tester according to claim 5, characterized in that: The outer wall of the connecting column four (33) is provided with a sphere two (31), and the outer wall of the placement compartment (23) is fixedly connected with an inclined block two (25).

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