Lubricating oil viscosity detection device

Abstract

The invention relates to a lubricating oil viscosity detection device, and relates to the field of lubricating oil detection equipment, the lubricating oil viscosity detection device comprises a heating cylinder, a top cover, a bottom cover and a viscosity detector, the top cover, the heating cylinder and the bottom cover are sequentially arranged from top to bottom along the axis direction of the heating cylinder, the viscosity detector is fixedly connected with the top cover, a mounting rack is arranged on the outer side of the heating cylinder, and a support plate is arranged on the mounting rack; the upper end face of the supporting plate is fixedly connected with a first lifting cylinder, the telescopic end of the first lifting cylinder penetrates through the supporting plate to be fixedly connected with the upper end face of the top cover, the top cover is slidably connected with the heating barrel in the axis direction of the heating barrel, the bottom cover is slidably connected with the heating barrel in the direction perpendicular to the axis of the heating barrel, and the top cover is provided with a stirring device. The cleaning device has the effect of improving the cleaning efficiency and quality of the detection device.

Description

Technical Field

[0001] This application relates to the field of lubricating oil testing equipment, and in particular to a lubricating oil viscosity testing device. Background Technology

[0002] Lubricant viscosity is a crucial indicator for evaluating its performance; therefore, lubricant viscosity testing devices are widely used in industrial production, scientific research, and product quality control. These devices accurately measure lubricant viscosity, helping users understand the oil's quality and suitability, thereby ensuring the safety and reliability of equipment operation.

[0003] Existing viscosity testing processes typically involve the following steps: First, the lubricating oil to be tested is added to a heating cylinder, and then heated to the required test temperature using a heating element or hot water. Next, a stirring device is activated to ensure the lubricating oil is evenly mixed within the heating cylinder to eliminate the influence of temperature gradients. Subsequently, a viscosity meter is inserted into the heating cylinder, and data is collected via sensors to complete the viscosity test. Finally, the tested lubricating oil is discharged from the heating cylinder, ready for the next test.

[0004] After the lubricating oil is discharged during testing, some of it will remain inside the testing chamber. The lubricating oil viscosity testing device is not convenient for quick cleaning of the residual lubricating oil, and users need to manually rinse it with tools, which results in low rinsing efficiency. Summary of the Invention

[0005] To improve the efficiency and quality of cleaning the testing device, this application provides a lubricating oil viscosity testing device.

[0006] This application provides a lubricating oil viscosity detection device, which adopts the following technical solution: A lubricating oil viscosity testing device includes a heating cylinder, a top cover, a bottom cover, and a viscosity meter. The top cover, heating cylinder, and bottom cover are arranged sequentially from top to bottom along the axis of the heating cylinder. The viscosity meter is fixedly connected to the top cover. A mounting frame is provided on the outside of the heating cylinder, and a support plate is provided on the mounting frame. A first lifting cylinder is fixedly connected to the upper surface of the support plate. The telescopic end of the first lifting cylinder passes through the support plate and is fixedly connected to the upper surface of the top cover. The top cover is slidably connected to the heating cylinder along the axis of the heating cylinder, and the bottom cover is slidably connected to the heating cylinder in a direction perpendicular to the axis of the heating cylinder. A stirring device is installed on the top cover.

[0007] By adopting the above technical solution, the equipment can be effectively cleaned after testing. Specifically, the stirring device not only ensures the temperature uniformity of the lubricating oil and the accuracy of the testing process, but also, thanks to its structural advantages, thoroughly removes residues from the inner wall of the heating cylinder, the upper surface of the bottom cover, and the stirring device itself after testing.

[0008] Optionally, the stirring device includes a stirring motor and several stirring racks. The stirring motor is fixedly connected to the upper end face of the top cover, and the several stirring racks are evenly distributed in the heating cylinder along the circumference of the heating cylinder. The stirring racks are rotatably connected to the heating cylinder along the axial direction of the heating cylinder, and the stirring motor is used to drive the stirring racks to rotate.

[0009] By adopting the above technical solution, the lubricating oil in the heating cylinder can be effectively stirred, ensuring the uniformity of the lubricating oil temperature and avoiding temperature deviations, thereby improving the detection accuracy of the viscosity meter. Simultaneously, when equipment cleaning is required, the stirring device drives the cleaning fluid to move within the heating cylinder, helping to remove residual lubricating oil from the stirring device itself, the inner wall of the heating cylinder, and the upper surface of the bottom cover, thus improving the cleaning effect.

[0010] Optionally, a fixed shaft is fixedly connected to the lower end face of the top cover, and a first gear is provided on the lower end face of the top cover. The first gear is coaxially and fixedly connected to the rotating shaft of the stirring motor. A second gear is provided on the lower end face of the top cover that meshes with the first gear. The second gear is rotatably connected to the top cover along the axis of the heating cylinder. The stirring frame is fixedly connected to the lower end face of the second gear. The fixed shaft is coaxially arranged with the heating cylinder. Several first bevel gears are fixedly connected to the fixed shaft and evenly arranged along the axis of the fixed shaft. Each first bevel gear meshes with several second bevel gears that are correspondingly arranged with the stirring frame. Each second bevel gear is coaxially and fixedly connected to a stirring shaft. The stirring shaft is rotatably connected to the stirring frame along its own axis. A stirring blade is fixedly connected to the stirring shaft. The second bevel gear is located below the first bevel gear, and a cone is fixedly provided on the upper end face of the first bevel gear.

[0011] By adopting the above technical solution, the stirring motor drives the first gear to rotate, which in turn drives the second gear to rotate, thereby causing the stirring frame to rotate. Simultaneously, because the second bevel gear meshes with the first bevel gear, it not only rotates around the heating cylinder axis but also rotates on its own axis, driving the stirring shaft and stirring blades to rotate. This design allows the stirring frame and stirring blades to create a multi-dimensional stirring effect within the heating cylinder, ensuring uniform temperature distribution of the lubricating oil during heating and improving the accuracy of viscosity detection. Furthermore, the conical design reduces lubricating oil residue on the first bevel gear, further enhancing the cleaning effect.

[0012] Optionally, a waste liquid tank is provided below the heating cylinder. The waste liquid tank is located inside the mounting frame. Two coaxial supports are fixedly connected to the lower end face of the bottom cover. A connecting rod passes through the supports. Slides are fixedly connected to both ends of the connecting rod. The slides are located inside the waste liquid tank and are slidably connected to the waste liquid tank in a direction perpendicular to the axis of the connecting rod.

[0013] By adopting the above technical solution, automatic discharge and cleaning functions after lubricant testing are achieved. Specifically: the waste liquid tank is located inside the mounting frame, ensuring centralized collection of waste liquid for easy subsequent treatment and preventing environmental pollution. The design of the support and connecting rod allows the bottom cover to slide horizontally. Combined with the sliding connection of the slide block within the waste liquid tank, this effectively controls the opening and closing of the bottom cover, ensuring smooth discharge of liquid from the heating cylinder. The sliding connection design between the slide block and the waste liquid tank not only improves the system's flexibility but also reduces mechanical wear and extends the equipment's service life. The slide block structure, fixed at both ends of the connecting rod, is simple, reliable, easy to manufacture and maintain, and reduces production costs. These measures collectively enhance the automation level and ease of operation of the entire device, significantly improving the cleaning effect.

[0014] Optionally, a partition is fixed inside the waste liquid tank, and a gravity block is fixed on the side of the bottom cover away from the partition. The gravity block, support, and slide are all located above the partition. The connecting rod is rotatably connected to the support along its own axis. A limit rod is fixedly connected above the waste liquid tank, and the lower end of the limit rod is not lower than the lower end of the heating cylinder. A limit block is fixedly connected to the outer wall of the connecting rod. A pressure box is provided above the waste liquid tank and is slidably connected to the waste liquid tank in the vertical direction. The partition is located between the heating cylinder and the pressure box. Several evenly arranged first through holes are opened on the side of the pressure box away from the heating cylinder. A first feed pipe is connected to the side of the pressure box near the heating cylinder. An installation strip is fixedly connected above the pressure box. A wiping block is detachably connected to the side of the installation strip away from the heating cylinder. A top block is fixedly provided on the inner wall of the waste liquid tank near the wiping block. A baffle is fixedly provided on the upper end of the side of the waste liquid tank near the wiping block. A liquid outlet pipe is connected to the lower end of the side of the waste liquid tank near the wiping block.

[0015] By adopting the above technical solution, a gravity block is used to achieve the self-rotation of the bottom cover. A limiting block restricts the rotation angle of the bottom cover, preventing excessive rotation and structural damage. The pressure tank design allows the bottom cover to be effectively wiped and cleaned during movement, improving the cleaning effect. The pressure tank can clean the bottom cover and drive its rotation. A top block inside the waste liquid tank ensures that the bottom cover will not shift during wiping, improving the reliability and stability of the cleaning process. A drain pipe promptly discharges waste liquid generated during cleaning, and a baffle prevents cleaning fluid or lubricating oil from spraying outside the waste liquid tank, avoiding environmental pollution. In summary, this design significantly improves the cleaning effect of the bottom cover, reduces maintenance costs, and extends the service life of the equipment.

[0016] Optionally, the waste liquid tank is provided with a first cleaning tank on one outer side wall along the sliding direction of the bottom cover, the heating cylinder is slidably connected to the mounting frame along the sliding direction of the bottom cover, a disc is provided above the first cleaning tank, a limiting ring is fixedly provided at the upper end of the outer side wall of the disc, a second lifting cylinder is fixedly connected to the mounting frame, the lower end of the extension end of the second lifting cylinder is fixedly connected to the upper end face of the disc, a wiping ring is detachably connected to the lower end face of the limiting ring, the outer diameter of the wiping ring is larger than the outer diameter of the limiting ring, the outer diameter of the limiting ring is smaller than the inner diameter of the heating cylinder, the outer diameter of the wiping ring is larger than the inner diameter of the heating cylinder in its natural state, an annular groove is opened in the disc, a number of second through holes communicating with the annular groove are evenly opened on the side wall of the disc, and a second feed pipe is connected to the upper end face of the disc.

[0017] By adopting the above technical solution, the inner wall of the heating cylinder can be effectively cleaned after testing, ensuring the accuracy of the next test. In its natural state, the outer diameter of the wiping ring is larger than the inner diameter of the heating cylinder. Utilizing its elastic properties, it can closely adhere to the inner wall of the heating cylinder, effectively removing any lubricating oil or cleaning fluid adhering to it, thus improving the cleaning effect. The second lifting cylinder drives the disc and the wiping ring to move up and down, allowing the wiping ring to fully cover the inner wall of the heating cylinder, further enhancing the thoroughness and uniformity of the cleaning. The design of the ring groove and the second through hole allows cleaning fluid or compressed air to pass through, enhancing the rinsing and drying effect on the inner wall of the heating cylinder and reducing the possibility of residue. The outer diameter of the limiting ring is smaller than the inner diameter of the heating cylinder, preventing the wiping ring from falling off during use and becoming impossible to remove, increasing the safety and convenience of operation.

[0018] Optionally, a gap is left between the upper end face of the waste liquid tank near the side wall of the first cleaning tank and the upper end face of the side wall of the first cleaning tank near the waste liquid tank and the lower end face of the heating cylinder. A rotating plate is hinged to the upper end face of the side wall of the first cleaning tank near the waste liquid tank. An installation plate is fixedly installed on the upper end face of the rotating plate near the waste liquid tank. A torsion spring is sleeved on the hinge shaft on the side of the rotating plate away from the waste liquid tank. A wiping strip is detachably connected to the side of the installation plate away from the waste liquid tank. The upper end face of the wiping strip is higher than the upper end face of the installation plate, and the upper end face of the installation plate is lower than the lower end face of the heating cylinder.

[0019] By adopting the above technical solution, the cleaning effect on the lower end face of the heating cylinder is improved. Specifically: the rotating plate design allows the heating cylinder to smoothly pass through the gap between the first cleaning tank and the waste liquid tank during movement, avoiding damage caused by collision. The wiping strip can effectively wipe the lower end face of the heating cylinder, removing residual liquid and ensuring that the lower end face of the heating cylinder remains clean. The mounting plate limits the wiping strip to prevent it from tipping over, further improving the cleaning effect. Because the upper end face of the wiping strip is higher than the lower end face of the heating cylinder, even if the wiping strip is slightly tilted, it can still ensure effective contact with the heating cylinder, enhancing cleaning reliability.

[0020] Optionally, a second cleaning tank is provided on one side of the waste liquid tank along the axis of the connecting rod. The support plate is slidably connected to the mounting frame along the axis of the connecting rod. The upper end surface of the second cleaning tank is not higher than the upper end surface of the heating cylinder. Several support legs are fixed on the lower end surface of the second cleaning tank. The outer wall of the second cleaning tank near the waste liquid tank and the inner wall of the waste liquid tank near the second cleaning tank are located on the same plane.

[0021] By adopting the above technical solution, the second cleaning tank enables the agitator to achieve a more thorough cleaning effect during the cleaning process after lubricating oil viscosity testing. The design of the support plate slidingly connected to the mounting frame along the connecting rod axis ensures that the agitator can accurately move into the second cleaning tank for deep cleaning and drying, improving cleaning efficiency and equipment lifespan. The upper surface of the second cleaning tank is not higher than the upper surface of the heating cylinder, ensuring smooth entry of the agitator and preventing collision damage due to height differences. The support leg design reduces the design height of the second cleaning tank, saving cost and space. The design of the outer wall of the second cleaning tank near the waste liquid tank being on the same plane as the inner wall of the waste liquid tank near the second cleaning tank effectively avoids the spillage of lubricating oil or cleaning fluid during cleaning, reducing pollution to the external environment and further improving the ease of use and environmental performance of the entire device.

[0022] Optionally, the end of the limiting rod near the outer wall of the heating cylinder abuts against the outer wall of the heating cylinder.

[0023] By adopting the above technical solution, the end of the limiting rod near the outer wall of the heating cylinder abuts against the outer wall, ensuring that the heating cylinder can accurately stop at the predetermined position during movement, avoiding equipment damage or operational errors caused by excessive movement. This design improves the stability and reliability of the equipment, ensuring that each inspection and cleaning operation is executed accurately, and enhancing overall work efficiency and safety.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The stirring device can not only ensure the temperature uniformity of the lubricating oil and the accuracy of the test during the test, but also use its structural advantages to thoroughly remove the residues on the inner wall of the heating cylinder, the upper surface of the bottom cover and the stirring device itself after the test is completed. 2. It can effectively agitate the lubricating oil in the heating cylinder, ensuring the uniformity of the lubricating oil temperature and avoiding temperature deviation, thereby improving the detection accuracy of the viscosity meter. At the same time, when the equipment needs to be cleaned, the agitation device drives the cleaning fluid to move in the heating cylinder, which helps to remove the lubricating oil residue on the agitation device itself, the inner wall of the heating cylinder and the upper end face of the bottom cover, thus improving the cleaning effect. 3. The waste liquid tank is reasonably designed, divided into two chambers by a partition, which realizes the effective collection and classification of waste liquid and avoids cross-contamination. At the same time, with the help of components such as pressure tank, wiping block and wiping ring, the bottom cover and inner wall of heating cylinder are thoroughly cleaned, which significantly improves the cleaning effect and reduces the amount of subsequent cleaning work. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a lubricating oil viscosity testing device.

[0026] Figure 2 This is an exploded diagram of the top cover, heating cylinder, and bottom cover.

[0027] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0028] Figure 4 This is a structural diagram of the waste liquid tank, bottom cover, and first cleaning tank.

[0029] Figure 5 This is a structural diagram of the pressure box and the wiping block.

[0030] Figure 6 This is a cross-sectional schematic diagram of the disk and the wiping ring.

[0031] Figure 7 yes Figure 1 Enlarged schematic diagram of part B.

[0032] Figure 8 yes Figure 4 An enlarged schematic diagram of section C.

[0033] Figure 9 This is a schematic diagram of the structure in Example 3 where the limiting rod abuts against the heating cylinder.

[0034] Explanation of reference numerals in the attached drawings: 1. Heating cylinder; 2. Top cover; 21. Fixed shaft; 22. Second gear; 23. First bevel gear; 231. Cone; 3. Bottom cover; 31. Support; 32. Connecting rod; 321. Limiting block; 33. Slide; 34. Gravity block; 4. Viscometer; 5. Mounting frame; 51. Support plate; 52. First lifting cylinder; 53. Second lifting cylinder; 6. Stirring device; 61. Stirring motor; 611. First gear; 62. Stirring frame; 63. Stirring shaft; 631. Stirring blade; 64. Second cone 7. Gear; 8. Waste liquid tank; 9. Partition plate; 10. Limiting rod; 11. Pressure box; 12. First through hole; 13. First feed pipe; 14. Mounting strip; 15. Wiping block; 16. Top block; 17. Baffle plate; 18. Discharge pipe; 19. First cleaning tank; 10. Disc; 11. Limiting ring; 12. Wiping ring; 13. Ring groove; 14. Second through hole; 15. Second feed pipe; 16. Rotating plate; 17. Mounting plate; 18. Wiping strip; 19. Torsion spring; 10. Second cleaning tank; 11. Support leg. Detailed Implementation

[0035] The present application will be further described in detail below with reference to all the accompanying drawings.

[0036] This application discloses a lubricating oil viscosity testing device.

[0037] Example 1 Reference Figure 1 A lubricating oil viscosity testing device includes a heating cylinder 1, a top cover 2, a bottom cover 3, and a viscosity meter 4. The heating cylinder 1 heats the lubricating oil by installing a heating element inside its wall or by filling it with hot water, hot oil, etc. The upper end of the viscosity meter 4 is fixedly connected to the upper surface of the top cover 2. The heating cylinder 1 is completely penetrated at both ends along its own axis, and the sampling end of the viscosity meter 4 passes through the top cover 2 and is located in a channel formed inside the inner wall of the heating cylinder 1.

[0038] Reference Figure 1 and Figure 2 The top cover 2, heating cylinder 1, and bottom cover 3 are arranged sequentially from top to bottom along the axis of heating cylinder 1. By setting the lower end face of the top cover 2 to be tightly fitted with the upper end face of the heating cylinder 1 and the upper end face of the bottom cover 3 to be tightly fitted with the lower end face of the heating cylinder 1, the top cover 2, heating cylinder 1, and bottom cover 3 are combined into a sealed cylinder, which serves to store the lubricating oil to be tested.

[0039] Reference Figure 2The top cover 2 is equipped with a stirring device 6, which is used to stir the lubricating oil. It can continuously stir the lubricating oil located at the top and bottom of the heating cylinder 1, so that the lubricating oil is fully mixed under the stirring of the stirring device 6, thereby ensuring the uniformity of the lubricating oil temperature and avoiding temperature deviation, thus ensuring the detection accuracy of the viscosity meter 4.

[0040] In addition, after the viscosity of the lubricating oil in the heating cylinder 1 is tested, the lubricating oil is discharged from the heating cylinder 1, and cleaning fluid is injected into the heating cylinder 1. The cleaning fluid is swirled in the heating cylinder 1 by the stirring device 6, thereby cleaning the stirring device 6, the inner wall of the heating cylinder 1 and the upper surface of the bottom cover 3 of the residual lubricating oil.

[0041] Reference Figure 2 and Figure 3 The stirring device 6 includes a stirring motor 61 and several stirring racks 62. The stirring motor 61 is fixedly connected to the upper end face of the top cover 2. A first gear 611 is provided on the lower end face of the top cover 2. The first gear 611 is coaxially fixedly connected to the rotating shaft of the stirring motor 61. A second gear 22 is provided on the lower end face of the top cover 2, meshing with the first gear 611. The second gear 22 is rotatably connected to the top cover 2 along the axis of the heating cylinder 1. Several stirring racks 62 are evenly distributed around the heating cylinder 1. The stirring racks 62 are fixedly connected to the lower end face of the second gear 22. The stirring motor 61 drives the stirring racks 62 to rotate. The stirring motor 61 drives the first gear 611 to rotate, the first gear 611 drives the second gear 22 to rotate, and the second gear 22 drives the stirring racks 62 to rotate. Each stirring rack 62 consists of two vertical rods and one horizontal rod. The upper ends of the two vertical rods are fixed together by the horizontal rod. The horizontal bar and the vertical bar near the axis of the heating cylinder 1 are fixedly connected to the lower end face of the second gear 22. The vertical bar away from the axis of the heating cylinder 1 is as close as possible to the sampling end of the viscosity meter 4 to increase the stirring range and at the same time avoid collision between the stirring rack 62 and the viscosity meter 4 when it rotates.

[0042] Reference Figure 2 and Figure 3A fixed shaft 21 is fixedly connected to the lower end face of the top cover 2. The fixed shaft 21 is coaxially arranged with the heating cylinder 1. Several first bevel gears 23 are fixedly connected to the fixed shaft 21 and are evenly arranged along the axis of the fixed shaft 21. Each first bevel gear 23 meshes with several second bevel gears 64 that are corresponding to the stirring frame 62. Each second bevel gear 64 is coaxially fixedly connected to a stirring shaft 63. The two ends of the stirring shaft 63 are respectively inserted into the two vertical rods of the stirring frame 62. The stirring shaft 63 is rotatably connected to the stirring frame 62 along its own axis. A stirring blade 631 is fixedly connected to the stirring shaft 63 and is located between the two vertical rods. When the stirring frame 62 rotates, it drives the stirring shaft 63 and the second bevel gear 64 to rotate along the axis of the heating cylinder 1. Since the second bevel gear 64 meshes with the first bevel gear 23, the first bevel gear 23 and the fixed shaft 21 remain stationary. The second bevel gear 64 rotates along the axis of the heating cylinder 1 while simultaneously rotating on its own axis, thereby driving the stirring shaft 63 to rotate along its own axis. This, in turn, drives the stirring blades 631 to rotate, achieving uniform mixing of the lubricating oil in the heating cylinder 1 in both the vertical and horizontal directions. The stirring frame 62 and the stirring blades 631 work together to stir the lubricating oil in the heating cylinder 1 in both the circumferential and axial directions, achieving uniform mixing of the lubricating oil and reducing detection errors caused by temperature deviations.

[0043] Reference Figure 3 The second bevel gear 64 is located below the first bevel gear 23. A cone 231 is fixed on the upper end face of the first bevel gear 23. Lubricating oil can fall through the inclined surface of the cone 231, reducing the residue of lubricating oil on the first bevel gear 23.

[0044] Reference Figure 1 A mounting bracket 5 is provided on the outside of the heating cylinder 1. A support plate 51 is provided on the mounting bracket 5. A first lifting cylinder 52 is fixedly connected to the upper end of the support plate 51. The telescopic end of the first lifting cylinder 52 passes through the support plate 51 and is fixedly connected to the upper end of the top cover 2. The top cover 2 is slidably connected to the heating cylinder 1 along the axis of the heating cylinder 1. At the same time, a guide rod can be fixed to the upper end of the top cover 2. The guide rod passes vertically upward through the support plate 51 and is slidably connected to the support plate 51. The first lifting cylinder 52 drives the top cover 2 to rise and fall, realizing the sealing and opening between the top cover 2 and the heating cylinder 1. At the same time, the first lifting cylinder 52 drives the stirring device 6 to move upward away from the heating cylinder 1 or downward into the heating cylinder 1.

[0045] Reference Figure 1 and Figure 4A waste liquid tank 7 is located below the heating cylinder 1, inside the mounting frame 5. Two coaxial supports 31 are fixedly connected to the lower end face of the bottom cover 3. A connecting rod 32 passes through each support 31, and slide blocks 33 are fixedly connected to both ends of the connecting rod 32. The slide blocks 33 are located inside the waste liquid tank 7 and are slidably connected to the waste liquid tank 7 in a direction perpendicular to the axis of the connecting rod 32. One of the two slide blocks 33 is threadedly connected to a lead screw, and the other is connected to a guide rod. The lead screw and guide rod are located above the waste liquid tank 7. The lead screw is rotatably connected to the waste liquid tank 7, and the guide rod is fixedly connected to the waste liquid tank 7. A motor that drives the lead screw to rotate is installed on the waste liquid tank 7. The motor drives the lead screw to rotate, causing the slide block 33 to move along the axis of the lead screw, which in turn causes the connecting rod 32 and the supports 31 to move synchronously, finally causing the bottom cover 3 to slide in a direction perpendicular to the axis of the heating cylinder 1. Through the sliding connection between the heating cylinder 1 and the bottom cover 3, the liquid inside the heating cylinder is discharged. The upper end face of the bottom cover 3 and the lower end face of the heating cylinder 1 are on the same plane, so that when the bottom cover 3 and the heating cylinder 1 are coaxial, they can fit tightly together and prevent liquid leakage from the heating cylinder 1.

[0046] Reference Figure 2 and Figure 4 A partition 71 is fixedly installed inside the waste liquid tank 7, dividing the waste liquid tank 7 into two chambers. The chamber below the heating cylinder 1 is the recovery chamber for the tested lubricating oil, and the other chamber is used for cleaning the bottom cover 3. A gravity block 34 is fixedly installed on the side of the lower end face of the bottom cover 3 away from the partition 71. Under the action of the gravity block 34, the support 31 tends to rotate along the axis of the connecting rod 32, thereby realizing the rotation of the bottom cover 3. This makes the side of the bottom cover 3 with the gravity block 34 face downward, so that the liquid remaining on the bottom cover 3 can flow downward into the waste liquid tank 7 under its own gravity. The gravity block 34, the support 31, and the slide 33 are all located above the partition 71, so that the partition 71 will not obstruct the sliding of the bottom cover 3. The connecting rod 32 is rotatably connected to the support 31 along its own axis. A limiting block 321 is fixedly connected to the outer wall of the connecting rod 32, so that the bottom cover 3 can only rotate 90 degrees, and the end of the bottom cover 3 away from the support 31 is in a vertical plane. In order to prevent the gravity block 34 from abutting against the partition 71 in the recovery chamber of the waste liquid tank 7 due to the rotation of the bottom cover 3, a bracket is fixedly connected above the waste liquid tank 7. The bracket is fixedly connected downward to the limiting rod 72, and the lower end face of the limiting rod 72 is not lower than the lower end face of the heating cylinder 1. Until the gravity block 34 passes through the partition 71, at this time the axis of the connecting rod 32 is out of the range of the limiting rod 72, the bottom cover 3 rotates, and the side of the bottom cover 3 with the gravity block 34 is located at the bottom.

[0047] Reference Figure 1 Above the waste liquid tank 7 is a pressure box 73 that is slidably connected to the waste liquid tank 7 in a vertical direction. By installing a bracket on the upper end of the waste liquid tank 7, two cylinders are installed on the bracket to drive the pressure box 73 to rise and fall. The length of the pressure box 73 is less than the distance between the two slide blocks 33 and greater than the outer diameter of the bottom cover 3.

[0048] The cylinder drives the pressure box 73 to slide downwards, so that the lower end of the pressure box 73 abuts against the end of the bottom cover 3 away from the support 31. When the bottom cover 3 slides towards the heating cylinder 1, under the obstruction of the pressure box 73, the bottom cover 3 rotates along the axis of the connecting rod 32. The pressure box 73 continues to descend until the gravity block 34 is above the partition 71. The bottom cover 3 continues to move and abuts against the limit rod 72. At this time, the side of the bottom cover 3 away from the gravity block 34 disengages from the pressure box 73. Then the gravity block 34 passes through the partition 71, and the bottom cover 3 continues to move towards the heating cylinder 1. The lower end of the heating cylinder 1 contacts the bottom cover 3. When the axis of the connecting rod 32 is within the range of the heating cylinder 1, the upper end face of the bottom cover 3 abuts against the lower end face of the heating cylinder 1. The bottom cover 3 continues to move, so that the bottom cover 3 blocks the lower end opening of the heating cylinder 1.

[0049] Reference Figure 1 and Figure 5 A partition 71 is located between the heating cylinder 1 and the pressure box 73. Several evenly arranged first through holes 731 are opened on the side of the pressure box 73 away from the heating cylinder 1. A first feed pipe 732 is connected to the side of the pressure box 73 closest to the heating cylinder 1. An installation strip 733 is fixedly connected to the top of the pressure box 73. A wiping block 734 is detachably connected to the side of the installation strip 733 away from the heating cylinder 1. The wiping block 734 has the characteristics of water absorption, oil absorption, and elasticity. For example, the wiping block 734 can be made of sponge material. The cleaning effect can be improved by replacing the wiping block 734 with a new one. The wiping block 734 is used to wipe the end of the bottom cover 3 away from the support 31. A top block 74 is fixedly installed on the inner wall of the waste liquid tank 7 near the wiping block 734. After the bottom cover 3 rotates, it continues to move until the top block 74 abuts against the bottom cover 3. At this time, the bottom cover 3 is on the side of the pressure tank 73 away from the partition 71. The top block 74 is used to abut against the end of the bottom cover 3 away from the gravity block 34 to prevent the bottom cover 3 from not being cleaned properly due to the bottom cover 3 rotating when the wiping block 734 wipes it. A baffle 75 is fixedly installed on the upper end surface of the side of the waste liquid tank 7 near the wiping block 734. The baffle 75 is used to prevent cleaning fluid or oil from being sprayed onto the outside of the waste liquid tank 7 when the pressure tank 73 and the wiping block 734 clean the bottom cover 3. A drain pipe 76 is connected to the lower end of the side of the waste liquid tank 7 near the wiping block 734 to discharge the waste liquid generated from cleaning the bottom cover 3 in a timely manner, avoiding the situation where the bottom cover 3 is exposed to waste liquid after flipping due to waste liquid accumulation.

[0050] Reference Figure 1A first cleaning tank 8 is provided on one outer wall of the waste liquid tank 7 along the sliding direction of the bottom cover 3. The heating cylinder 1 is slidably connected to the mounting frame 5 along the sliding direction of the bottom cover 3. The heating cylinder 1 is moved by a motor and a lead screw mounted on the mounting frame 5. The heating cylinder 1 can move either above the first cleaning tank 8 or towards the pressure tank 73. The upper end face of the side wall of the waste liquid tank 7 near the first cleaning tank 8 and the upper end face of the side wall of the first cleaning tank 8 near the waste liquid tank 7 are both left with gaps from the lower end face of the heating cylinder 1. This prevents collision and friction between the heating cylinder 1 and the first cleaning tank 8 when the heating cylinder 1 moves towards the first cleaning tank 8. The first cleaning tank 8 is in close contact with the waste liquid tank 7 to prevent residual lubricating oil or cleaning fluid from falling into the waste liquid tank 7 and outside the first cleaning tank when the heating cylinder 1 moves, reducing the need for external cleaning operations.

[0051] Reference Figure 1 and Figure 6 A disc 81 is positioned above the first cleaning tank 8. A limiting ring 811 is fixedly installed on the upper end of the outer wall of the disc 81. A second lifting cylinder 53 is fixedly connected to the mounting bracket 5. The lower end of the telescopic end of the second lifting cylinder 53 is fixedly connected to the upper surface of the disc 81. A wiping ring 812 is detachably connected to the lower surface of the limiting ring 811. The wiping ring 812 has the characteristics of absorbing water and oil and being elastic. For example, the wiping ring 812 can be made of sponge material. The outer diameter of the wiping ring 812 is larger than the outer diameter of the limiting ring 811. The outer diameter of the limiting ring 811 is smaller than the inner diameter of the heating cylinder 1. In its natural state, the outer diameter of the wiping ring 812 is larger than the inner diameter of the heating cylinder 1.

[0052] When the second lifting cylinder 53 moves the disc 81 and the wiping ring 812 downward to wipe the inner wall of the heating cylinder 1, the outer diameter of the wiping ring 812 is larger than the inner diameter of the heating cylinder 1 in its natural state. Since the wiping ring 812 is elastic, it can be squeezed into the heating cylinder 1, reducing the gap between the outer diameter of the wiping ring 812 and the inner wall of the heating cylinder 1, thus improving the cleaning effect. At the same time, the inner wall of the wiping ring 812 is also tightly fitted to the disc 81, preventing the wiping ring 812 from falling off from below the disc 81 after absorbing water and becoming heavy. The limiting ring 811 prevents the wiping ring 812 from detaching from the upper end of the disc 81 during the process of being pressed into the heating cylinder 1. After the wiping ring 812 has completely passed through the heating cylinder 1 and is below the heating cylinder 1, the second lifting cylinder 53 drives the disc 81 and the wiping ring 812 to move upward. The lower end of the heating cylinder 1 blocks the upward movement of the wiping ring 812, and the wiping ring 812 falls from the disc 81 into the first cleaning box 8. The disc 81 continues to move upward. Since the outer diameter of the limiting ring 811 is smaller than the inner diameter of the heating cylinder 1, and the outer diameter of the wiping ring 812 is larger than the inner diameter of the heating cylinder 1 in its natural state, the limiting ring 811 will not contact the heating cylinder 1. When the limiting ring 811 is removed from the heating cylinder 1, a clean wiping ring 812 can be installed on the disc 81 in the next working interval. The wiping ring 812 that has been removed from the disc 81 is cleaned by the first cleaning box 8.

[0053] Reference Figure 6 The disc 81 has an annular groove 813 inside, and several second through holes 814 that communicate with the annular groove 813 are evenly provided on the side wall of the disc 81. The upper end face of the disc 81 is connected to a second feed pipe 815.

[0054] Reference Figure 1 A second cleaning tank 9 is provided on one side of the waste liquid tank 7 along the axis of the connecting rod 32. The second cleaning tank 9 is used to clean the stirring device 6. The support plate 51 is slidably connected to the mounting frame 5 along the axis of the connecting rod 32. The moving of the stirring device 6 and the top cover 2 is achieved by moving the support plate 51 driven by a motor and a lead screw mounted on the mounting frame 5. The upper end face of the second cleaning tank 9 is not higher than the upper end face of the heating cylinder 1. Several support legs 91 are fixed on the lower end face of the second cleaning tank 9. The outer wall of the second cleaning tank 9 near the waste liquid tank 7 is on the same plane as the inner wall of the waste liquid tank 7 near the second cleaning tank 9, to prevent residual lubricating oil or cleaning fluid on the stirring device 6 from falling into the waste liquid tank 7 and the outside of the second cleaning tank, reducing the need for external cleaning operations.

[0055] The working process of this embodiment is as follows: The bottom cover 3 seals the lower opening of the heating cylinder 1, and the lubricating oil to be tested is injected into the upper opening of the heating cylinder 1. The first lifting cylinder 52 drives the top cover 2 to seal the upper opening of the heating cylinder 1, and the stirring rack 62 falls into the heating cylinder 1 to stir the lubricating oil completely and make its temperature uniform. The viscosity of the lubricating oil is measured by the viscosity meter 4. After the test is completed, the bottom cover 3 moves towards the partition 71 to connect the lower end of the heating cylinder 1 with the outside, and the lubricating oil falls into the waste liquid tank 7. After the lubricating oil in the heating cylinder 1 no longer flows out, the bottom cover 3 reseals the lower opening of the heating cylinder 1, the top cover 2 rises a certain distance to inject cleaning fluid into the heating cylinder 1, the top cover 2 falls down to seal the upper opening of the heating cylinder 1, and the stirring device 6 is rotated to clean the outside of the stirring device 6, the viscosity meter 4, the inner wall of the heating cylinder 1, and the bottom cover 3. After cleaning, the top cover 2 and the stirring device 6 first detach from the heating cylinder 1 and then move to the second cleaning tank 9 for deep cleaning and drying. Heating cylinder 1 and bottom cover 3 move together toward partition 71, so that the inner wall of heating cylinder 1 passes over partition 71. A gap is left between limiting rod 72 and partition 71 for the movement of heating cylinder 1. Bottom cover 3 moves a distance toward the recovery chamber, and cleaning fluid flows from heating cylinder 1 into the cleaning chamber of waste liquid tank 7. The cleaning fluid is discharged from the discharge pipe. Then, bottom cover 3 moves toward the cleaning chamber to the side of pressure tank 73 away from partition 71, while heating cylinder 1 moves toward the first cleaning tank 8 and is coaxial with disk 81. Mounting strip 733 and wiping block 734 move from bottom to top. First, wiping block 734 moves upward to wipe bottom cover 3, cleaning the liquid on the surface of bottom cover 3. Compressed air is introduced into pressure tank 73 through first feed pipe 732 and sprayed onto bottom cover 3 through first through hole 731 to dry the liquid remaining on the surface of bottom cover 3 that was not wiped clean by wiping block 734, improving the cleaning effect. While the bottom cover 3 is being cleaned, the wiping ring 812 absorbs water and oil from the inner wall of the heating cylinder 1 from top to bottom. After the wiping ring 812 detaches from the disc 81, as the disc 81 passes upward through the heating cylinder 1, compressed air is introduced into the ring groove 813 through the second feed pipe 815. The compressed air is then sprayed onto the inner wall of the heating cylinder 1 through the second through hole 814, drying any remaining moisture and improving the cleaning effect of the heating cylinder 1. Subsequently, after cleaning, the heating cylinder 1, bottom cover 3, and top cover 2 return to their initial coaxial state for the next inspection.

[0056] Example 2 Reference Figure 7 and Figure 8A rotating plate 82 is hinged to the upper end face of the side wall of the first cleaning tank 8 near the waste liquid tank 7. A mounting plate 821 is fixed to the upper end face of the rotating plate 82 near the waste liquid tank 7. A torsion spring 83 is sleeved on the hinge shaft of the rotating plate 82 away from the waste liquid tank 7. A wiping strip 822 is detachably connected to the side of the mounting plate 821 away from the waste liquid tank 7. The wiping strip 822 is easy to replace when dirty, improving cleaning effect and efficiency. The wiping strip 822 has the characteristics of water absorption, oil absorption, and elasticity; for example, the wiping strip 822 can be made of sponge material. The upper end face of the wiping strip 822 is higher than the upper end face of the mounting plate 821, and the upper end face of the mounting plate 821 is lower than the lower end face of the heating cylinder 1. Because the wiping strip 822 is elastic, its upper end face is higher than the lower end face of the heating cylinder 1 in its natural state. Since the lower end of the heating cylinder 1 contacts the bottom cover 3, it will be contaminated with liquid from the bottom cover 3. The wiping strip 822 is used to wipe the lower end surface of the heating cylinder 1. When the heating cylinder 1 moves from the waste liquid tank 7 to the first cleaning tank 8, the heating cylinder 1 presses the wiping strip 822 against the lower end of the heating cylinder 1, and at the same time drives the rotating plate 82 to rotate. The heating cylinder 1 continues to move until it is separated from the wiping strip 822. The rotating plate 82 is reset under the action of the torsion spring 83, and the wiping strip 822 performs a preliminary wipe on the lower end surface of the heating cylinder 1. When the heating cylinder 1 returns from the first cleaning tank 8 to the waste liquid tank 7, the wiping strip 822 performs a second wipe. The mounting plate 821 limits the wiping strip 822 to prevent it from tipping over, thereby increasing the cleaning effect on the lower end surface of the heating cylinder 1.

[0057] Example 3 The difference between this embodiment and the above embodiments lies in the cleaning method and procedure.

[0058] Reference Figure 9The working process of this embodiment is as follows: The bottom cover 3 seals the lower opening of the heating cylinder 1, and the lubricating oil to be tested is injected into the upper opening of the heating cylinder 1. The first lifting cylinder 52 drives the top cover 2 to seal the upper opening of the heating cylinder 1, and the stirring rack 62 falls into the heating cylinder 1 to stir the lubricating oil completely and make its temperature uniform. The viscosity of the lubricating oil is detected by the viscosity meter 4. After the test is completed, the bottom cover 3 moves to the side of the pressure box 73 away from the partition 71 in the cleaning chamber. The cleaning fluid is introduced into the pressure box 73 through the first feed pipe 732 and sprayed onto the bottom cover 3 through the first through hole 731 to clean the bottom cover 3. The pressure box 73 moves from top to bottom to cover the bottom cover 3 with the sprayed cleaning fluid. At the same time, the mounting strip 733 and the wiping block 734 move together with the pressure box 73. The wiping block 734 wipes the bottom cover 3 to clean the oil and cleaning fluid from the surface of the bottom cover 3. At the same time, the top cover 2 and the stirring device 6 first detach from the heating cylinder 1 and then move into the second cleaning box 9 for deep cleaning and drying. After the lubricating oil in the heating cylinder 1 stops dripping into the waste liquid tank 7, the heating cylinder 1 moves towards the first cleaning tank 8 until it is coaxial with the disc 81. As the wiping ring 812 passes downwards to wipe the inner wall of the heating cylinder 1, the second feed pipe 815 introduces cleaning fluid into the ring groove 813. The cleaning fluid flows through the second feed pipe onto the wiping ring 812, wetting it and thus cleaning the inner wall of the heating cylinder 1. After cleaning, the heating cylinder 1, bottom cover 3, and top cover 2 return to their initial coaxial state for the next inspection. The end of the limiting rod 72 near the outer wall of the heating cylinder 1 abuts against it, limiting its position. When the heating cylinder 1 moves back from the first cleaning tank 8 to the waste liquid tank 7, the top cover 2 and the stirring device 6 are coaxial with the heating cylinder 1 when the outer wall of the heating cylinder 1 abuts against the limiting rod 72.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lubricating oil viscosity testing device, characterized in that: The device includes a heating cylinder (1), a top cover (2), a bottom cover (3), and a viscosity meter (4). The top cover (2), heating cylinder (1), and bottom cover (3) are arranged from top to bottom along the axis of the heating cylinder (1). The viscosity meter (4) is fixedly connected to the top cover (2). A mounting bracket (5) is provided on the outside of the heating cylinder (1). A support plate (51) is provided on the mounting bracket (5). A first lifting cylinder (52) is fixedly connected to the upper end of the support plate (51). The telescopic end of the first lifting cylinder (52) passes through the support plate (51) and is fixedly connected to the upper end of the top cover (2). The top cover (2) is slidably connected to the heating cylinder (1) along the axis of the heating cylinder (1). The bottom cover (3) is slidably connected to the heating cylinder (1) in a direction perpendicular to the axis of the heating cylinder (1). A stirring device (6) is installed on the top cover (2).

2. The lubricating oil viscosity testing device according to claim 1, characterized in that: The stirring device (6) includes a stirring motor (61) and several stirring racks (62). The stirring motor (61) is fixedly connected to the upper end face of the top cover (2). Several stirring racks (62) are evenly distributed in the heating cylinder (1) along the circumference of the heating cylinder (1). The stirring racks (62) are rotatably connected to the heating cylinder (1) along the axis of the heating cylinder (1). The stirring motor (61) is used to drive the stirring racks (62) to rotate.

3. The lubricating oil viscosity testing device according to claim 2, characterized in that: A fixed shaft (21) is fixedly connected to the lower end face of the top cover (2). A first gear (611) is provided on the lower end face of the top cover (2). The first gear (611) is coaxially fixedly connected to the rotating shaft of the stirring motor (61). A second gear (22) meshes with the first gear (611) on the lower end face of the top cover (2). The second gear (22) is rotatably connected to the top cover (2) along the axis of the heating cylinder (1). The stirring frame (62) is fixedly connected to the lower end face of the second gear (22). The fixed shaft (21) is coaxially arranged with the heating cylinder (1). A fixed shaft (21) is fixedly connected to the fixed shaft (21). A number of first bevel gears (23) are evenly arranged along the axis of the fixed shaft (21). Each first bevel gear (23) meshes with a number of second bevel gears (64) that are corresponding to the stirring frame (62). Each second bevel gear (64) is coaxially fixedly connected to a stirring shaft (63). The stirring shaft (63) is rotatably connected to the stirring frame (62) along its own axis. A stirring blade (631) is fixedly connected to the stirring shaft (63). The second bevel gear (64) is located below the first bevel gear (23). A cone (231) is fixedly provided on the upper end face of the first bevel gear (23).

4. The lubricating oil viscosity testing device according to claim 1, characterized in that: Below the heating cylinder (1) is a waste liquid tank (7), which is located inside the mounting frame (5). The bottom cover (3) is fixedly connected to two coaxially arranged supports (31). A connecting rod (32) passes through the supports (31). Slide seats (33) are fixedly connected to both ends of the connecting rod (32). The slide seats (33) are located inside the waste liquid tank (7) and are slidably connected to the waste liquid tank (7) in a direction perpendicular to the axis of the connecting rod (32).

5. The lubricating oil viscosity testing device according to claim 4, characterized in that: The waste liquid tank (7) is fixedly equipped with a partition (71). A gravity block (34) is fixedly installed on the side of the bottom cover (3) away from the partition (71). The gravity block (34), the support (31), and the slide (33) are all located above the partition (71). The connecting rod (32) is rotatably connected to the support (31) along its own axis. A limit rod (72) is fixedly connected above the waste liquid tank (7). The lower end of the limit rod (72) is not lower than the lower end of the heating cylinder (1). A limit block (321) is fixedly connected to the outer wall of the connecting rod (32). A pressure box (73) is provided above the waste liquid tank (7) and is slidably connected to the waste liquid tank (7) in the vertical direction. The partition (71) is located between the heating cylinder (1) and the pressure box. Between the boxes (73), the pressure box (73) has several evenly arranged first through holes (731) on the side away from the heating cylinder (1), the pressure box (73) is connected to the side near the heating cylinder (1) by a first feed pipe (732), the pressure box (73) is fixedly connected to the top of the pressure box (73), the side of the installation strip (733) away from the heating cylinder (1) is detachably connected to a wiping block (734), the waste liquid tank (7) is fixedly provided with a top block (74) on the inner wall near the wiping block (734), the waste liquid tank (7) is fixedly provided with a baffle (75) on the upper end surface of the side near the wiping block (734), and the lower end of the side near the wiping block (734) of the waste liquid tank (7) is connected to a liquid outlet pipe (76).

6. The lubricating oil viscosity testing device according to claim 4, characterized in that: The waste liquid tank (7) has a first cleaning tank (8) on one outer side wall along the sliding direction of the bottom cover (3). The heating cylinder (1) is slidably connected to the mounting frame (5) along the sliding direction of the bottom cover (3). A disc (81) is provided above the first cleaning tank (8). A limiting ring (811) is fixedly provided at the upper end of the outer side wall of the disc (81). A second lifting cylinder (53) is fixedly connected to the mounting frame (5). The lower end of the extension end of the second lifting cylinder (53) is fixedly connected to the upper end face of the disc (81). The lower end face of the limiting ring (811) is fixedly connected to the upper end face of the disc (811). A detachable wiping ring (812) is connected. The outer diameter of the wiping ring (812) is larger than the outer diameter of the limiting ring (811). The outer diameter of the limiting ring (811) is smaller than the inner diameter of the heating cylinder (1). In its natural state, the outer diameter of the wiping ring (812) is larger than the inner diameter of the heating cylinder (1). A ring groove (813) is opened in the disc (81). Several second through holes (814) communicating with the ring groove (813) are evenly opened on the side wall of the disc (81). A second feed pipe (815) is connected to the upper end face of the disc (81).

7. The lubricating oil viscosity testing device according to claim 6, characterized in that: The upper end face of the waste liquid tank (7) near the side wall of the first cleaning tank (8) and the upper end face of the side wall of the first cleaning tank (8) near the waste liquid tank (7) are both separated from the lower end face of the heating cylinder (1). A rotating plate (82) is hinged to the upper end face of the side wall of the first cleaning tank (8) near the waste liquid tank (7). An installation plate (821) is fixed on the side of the upper end face of the rotating plate (82) near the waste liquid tank (7). A torsion spring (83) is sleeved on the hinge shaft on the side of the rotating plate (82) away from the waste liquid tank (7). A wiping strip (822) is detachably connected to the side of the installation plate (821) away from the waste liquid tank (7). The upper end face of the wiping strip (822) is higher than the upper end face of the installation plate (821), and the upper end face of the installation plate (821) is lower than the lower end face of the heating cylinder (1).

8. The lubricating oil viscosity testing device according to claim 4, characterized in that: The waste liquid tank (7) is provided with a second cleaning tank (9) on one side along the axis of the connecting rod (32). The support plate (51) is slidably connected to the mounting frame (5) along the axis of the connecting rod (32). The upper end face of the second cleaning tank (9) is not higher than the upper end face of the heating cylinder (1). Several support legs (91) are fixed on the lower end face of the second cleaning tank (9). The outer wall of the second cleaning tank (9) near the waste liquid tank (7) and the inner wall of the waste liquid tank (7) near the second cleaning tank (9) are located on the same plane.

9. A lubricating oil viscosity testing device according to claim 5, characterized in that: The end of the limiting rod (72) near the outer wall of the heating cylinder (1) abuts against the outer wall of the heating cylinder (1).

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