Kinematic viscosity detection equipment for lubricating oil production and processing

Abstract

The invention discloses kinematic viscosity detection equipment for lubricating oil production and processing, and relates to the technical field of lubricating oil kinematic viscosity detection.The kinematic viscosity detection equipment comprises a base and a second supporting frame, the top end of the base is fixedly connected with a second fixing plate and the second supporting frame, and one end of the second supporting frame is fixedly connected with an operation screen; a positioning mechanism is fixedly connected to one end of a second fixing plate, a moving mechanism is fixedly connected to one end of a second supporting frame, a detection mechanism is arranged at the top end of a carrying plate, and through the synergistic effect of a first coil, a second coil and a magnet block, an inner shaft is made to suspend on the inner side of an outer cylinder; therefore, mechanical friction interference of a traditional bearing is thoroughly eliminated, and rotation blocking of the inner shaft is avoided. Compared with a measurement mode depending on a torque spring, the design not only saves the tedious step of spring calibration, but also solves the measurement error caused by spring lag, and remarkably improves the overall detection precision.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oil kinematic viscosity detection, in particular to a kinematic viscosity detection device for lubricating oil production and processing. Background Art

[0002] Viscosity is the most important quality indicator for lubricants. Using lubricants with excessive viscosity can reduce engine power, increase fuel consumption, and make it difficult to start the engine. Using lubricants with too low a viscosity can make it difficult to form an oil film in the lubricated area, resulting in "dry friction" between the two friction surfaces, failing to achieve lubrication and increasing machine wear. When processing lubricants, viscosity testing equipment is required to monitor the movement of lubricant samples.

[0003] Existing rotational viscometers operate by suspending a cylinder on a force-measuring device via bearings and connected to it via springs. As the cylinder rotates, the polymer liquid in the slit flows due to shear. The viscosity of body fluids drives the cylinder to rotate until the torque on the cylinder balances the spring force and the cylinder stops rotating. At this point, the cylinder has rotated a certain angle θ. This method relies on the deformation angle of a mechanical spring (which requires regular spring stiffness calibration and is susceptible to fatigue). Furthermore, the bearings between the cylinder and the measuring device generate mechanical friction, which causes resistance to the rotation of the inner cylinder (accounting for 5-10% error). Furthermore, spring hysteresis also introduces errors, and torsion spring creep introduces a ±2% deviation, which affects detection accuracy and fails to meet the requirements of high-precision testing. Therefore, to address the above issues, a kinematic viscosity testing device for lubricating oil production and processing is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a kinematic viscosity detection device for lubricating oil production and processing to solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A kinematic viscosity testing device for lubricating oil production and processing includes a base and a second support frame, the top of the base is fixedly connected to a second fixed plate and the second support frame, one end of the second support frame is fixedly connected to an operating screen, one end of the second fixed plate is fixedly connected to a positioning mechanism, one end of the second support frame is fixedly connected to a moving mechanism, different positions of the moving mechanism are respectively fixedly connected to a linkage mechanism and a positioning mechanism, one end of the linkage mechanism is fixedly connected to a loading plate, and the top of the loading plate is provided with a detection mechanism.

[0007] Preferably, the detection mechanism includes a rotating conductive slip ring fixedly connected to the carrier plate, the rotating part of the rotating conductive slip ring is fixedly connected to a fixing frame, the top of the fixing frame is fixedly connected to an outer cylinder, an inner shaft is placed on the inner side of the outer cylinder, both ends of the inner shaft are fixedly connected to magnet blocks, the bottom of the outer cylinder is fixedly connected to a bottom plate, a second coil fixedly connected to the moving mechanism is arranged above the upper magnet block, a first coil is arranged below the bottom plate, the bottom end of the first coil is fixedly connected to a support column fixedly connected to the carrier plate, a non-contact torque sensor is arranged on the outside of the inner shaft, and the bottom end of the non-contact torque sensor is fixedly connected to a non-contact ultrasonic sensor.

[0008] Preferably, a heating plate and a patch temperature sensor are fixedly connected to the inner side of the outer cylinder.

[0009] Preferably, one end of the carrier is fixedly connected to a motor, a first gear is fixedly connected to the outside of the main shaft of the motor, one end of the first gear is engaged with a gear ring, and the gear ring is fixedly connected to the fixed frame, and the end of the main shaft of the motor is fixedly connected to a photoelectric encoder, and the photoelectric encoder is fixedly connected to the carrier through an external bracket.

[0010] Preferably, the moving mechanism includes a first electric telescopic rod fixedly connected to the second support frame, the bottom end of the first electric telescopic rod is fixedly connected to a first fixed plate, and the first fixed plate is fixedly connected to the second coil, one end of the linkage mechanism is fixedly connected to the first fixed plate, the bottom end of the first fixed plate is fixedly connected to a side plate, and the side plate is fixedly connected to the non-contact torque sensor.

[0011] Preferably, the linkage mechanism includes a first support frame fixedly connected to the first fixed plate, the bottom end of the first support frame is fixedly connected to a rack, one end of the rack is engaged with a second gear, the outer sides of the rotating shafts at both ends of the second gear are fixedly connected to a first fixed beam, the other end of the first fixed beam is fixedly connected to a second fixed beam, and the second fixed beam is fixedly connected to the loading plate, the ends of the rotating shafts at both ends of the second gear are fixedly connected to a rotating block, the outer side of the rotating block is rotatably connected to a fixed shell, and the fixed shell is fixedly connected to the second support frame.

[0012] Preferably, a partition is fixedly connected to the inner side of the fixed shell, a guide shaft is slidably connected to the inner side of the partition, the top end of the guide shaft is fixedly connected to a clamping head that engages with the rotating block, a spring is provided on the outer side of the guide shaft, and both ends of the spring are fixedly connected to the partition and the guide shaft respectively.

[0013] Preferably, the positioning mechanism includes a second electric telescopic rod fixedly connected to the first support frame, the bottom end of the second electric telescopic rod is fixedly connected to a connecting seat, the bottom end of the connecting seat is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a movable frame, one end of the movable frame is fixedly connected to a guide rod, and the guide rod is slidably connected to the side plate, and the other end of the guide rod is fixedly connected to a positioning block.

[0014] Preferably, the cleaning mechanism includes a fourth electric telescopic rod fixedly connected to the second fixed plate, the other end of the fourth electric telescopic rod is fixedly connected to a fixing seat, the other end of the fixing seat is fixedly connected to a connecting tube, the end of the connecting tube is fixedly connected to a sealing ring, the inner side of the connecting tube is fixedly connected to a fixing block, one end of the fixing block is rotatably connected to a nozzle via a rotating shaft, adjacent nozzles are connected by a conducting tube, and one end of one of the conducting tubes is connected to an infusion tube;

[0015] The bottom end of the connecting cylinder is spirally connected with a connecting ring, and the bottom end of the connecting ring is fixedly connected with a waste liquid pipe.

[0016] Preferably, one end of the connecting tube is fixedly connected to the third electric telescopic rod, the other end of the third electric telescopic rod is fixedly connected to the connecting disk, one end of the connecting disk is rotatably connected to the pull rod, and the other end of the pull rod is rotatably connected to the nozzle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A kinematic viscosity testing device for lubricating oil production and processing is equipped with a detection mechanism. Through the coordinated action of a first coil, a second coil, and a magnet block, the inner shaft is suspended inside the outer cylinder, thereby completely eliminating the mechanical friction interference of traditional bearings and preventing the inner shaft from rotating. Compared with measurement methods that rely on torque springs, this design not only eliminates the tedious steps of spring calibration, but also solves the measurement errors caused by spring hysteresis, significantly improving overall detection accuracy.

[0019] 2. A kinematic viscosity testing device for lubricating oil production and processing is provided with a moving mechanism and a linkage mechanism. When the inner shaft surface and the inner wall of the outer cylinder need to be cleaned after the test, the moving mechanism removes components such as the non-contact torque sensor on the outside of the inner shaft from the outside of the inner shaft to ensure that the inner shaft can rotate normally. When the moving mechanism is working, the linkage mechanism will also work synchronously, and under the action of the linkage mechanism, the inner shaft and the outer cylinder will rotate and face the cleaning mechanism.

[0020] 3. A kinematic viscosity testing device for lubricant production and processing is equipped with a positioning mechanism that can accurately adjust the position of the inner shaft before lubricant testing to ensure that the vertical center line of the inner shaft completely coincides with the vertical center line of the outer cylinder. This design provides a core guarantee for the uniformity of the annular flow field and a stable basic condition for subsequent precise testing, thereby improving the accuracy and reliability of viscosity testing.

[0021] 4. A kinematic viscosity testing device for lubricating oil production and processing is provided with a cleaning mechanism. After the kinematic viscosity test of the lubricating oil is completed, the residual oil on the outside of the inner shaft and the inside of the outer cylinder can be automatically cleaned through the cleaning mechanism, without the need for manual cleaning, which facilitates the work of the staff and improves the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Figure 1 The figure is a schematic diagram of the overall structure of a kinematic viscosity detection device for lubricating oil production and processing according to the present invention.

[0024] Figure 2 The present invention is a schematic diagram of the installation structure of a heating plate of a kinematic viscosity detection device for lubricating oil production and processing.

[0025] Figure 3 The present invention is a schematic diagram of the installation structure of a positioning block of a kinematic viscosity detection device for lubricating oil production and processing.

[0026] Figure 4 The present invention is a schematic diagram of the installation structure of the gears of a kinematic viscosity detection device for lubricating oil production and processing.

[0027] Figure 5 The present invention is a schematic diagram of the cross-section structure of a fixed shell of a kinematic viscosity detection device for lubricating oil production and processing.

[0028] Figure 6 The present invention is a schematic structural diagram of a positioning mechanism of a kinematic viscosity detection device for lubricating oil production and processing.

[0029] Figure 7 The present invention is a schematic structural diagram of a cleaning mechanism of a kinematic viscosity detection device for lubricating oil production and processing.

[0030] Figure 8This is a schematic diagram of the internal installation structure of a connecting cylinder of a kinematic viscosity testing device for lubricating oil production and processing according to the present invention.

[0031] In the figure: 1. Detection mechanism; 101. Rotating conductive slip ring; 102. Support column; 103. First coil; 104. Bottom plate; 105. Outer cylinder; 106. Heating plate; 107. Patch temperature sensor; 108. Inner shaft; 109. Magnet block; 110. Second coil; 111. Non-contact torque sensor; 112. Fixing bracket; 113. Gear ring; 114. First gear; 115. Motor; 116. Non-contact ultrasonic sensor; 117. Photoelectric encoder;

[0032] 2. Moving mechanism; 201. First electric telescopic rod; 202. First fixed plate; 203. Side plate;

[0033] 3. Linkage mechanism; 301. First support frame; 302. Rack; 303. Second gear; 304. Rotating block; 305. Fixed housing; 306. Partition; 307. Chuck; 308. Guide shaft; 309. Spring; 310. First fixed beam; 311. Second fixed beam;

[0034] 4. Positioning mechanism; 401. Second electric telescopic rod; 402. Connecting seat; 403. Connecting rod; 404. Moving frame; 405. Guide rod; 406. Positioning block;

[0035] 5. Cleaning mechanism; 501. Connecting tube; 502. Sealing ring; 503. Nozzle; 504. Conducting tube; 505. Infusion tube; 506. Pull rod; 507. Connecting plate; 508. Third electric telescopic rod; 509. Connecting ring; 510. Waste liquid pipe; 511. Fourth electric telescopic rod; 512. Fixing block; 513. Fixing seat;

[0036] 6. Base; 7. Second fixing plate; 8. Second supporting frame; 9. Loading plate; 10. Operation screen. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. At the same time, all precision instruments such as lead screws, screws, gears, racks, etc. are equipped with protective structures such as protective covers on the outside. As common knowledge, the description will not elaborate on them in detail. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention will be further elaborated below in conjunction with specific embodiments.

[0039] Example

[0040] like Figures 1-8 As shown, a kinematic viscosity testing device for lubricating oil production and processing includes a base 6 and a second support frame 8. The top of the base 6 is fixedly connected to a second fixed plate 7 and the second support frame 8. One end of the second support frame 8 is fixedly connected to an operating screen 10. The operating screen 10 establishes a communication connection with an external industrial computer via a signal transmission line. The system is pre-configured with an automatic control program to achieve orderly control of the detection mechanism 1, the moving mechanism 2, the positioning mechanism 4, and the cleaning mechanism 5. This automatic control system adopts the mature PLC+HMI human-machine interface control solution in the industrial automation field, combined with the drive system and sensor feedback network to form a complete automation solution. Currently, mainstream brands such as Siemens and Mitsubishi can provide standardized hardware products and supporting software platforms on the market. Users only need to develop programs according to specific process requirements to quickly implement control function deployment. One end of the second fixed plate 7 is fixedly connected to the positioning mechanism 4. One end of the second support frame 8 is fixedly connected to the moving mechanism 2. Different positions of the moving mechanism 2 are fixedly connected to the linkage mechanism 3 and the positioning mechanism 4. One end of the linkage mechanism 3 is fixedly connected to the loading plate 9, and the top of the loading plate 9 is provided with the detection mechanism 1.

[0041] As a further improvement of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the detection mechanism 1 includes a rotating conductive slip ring 101 fixedly connected to the carrier plate 9. The rotating conductive slip ring 101 is a precision power transmission device that realizes the image, data signal and power transmission of two relative rotating mechanisms. It is a prior art and will not be elaborated here. The rotating conductive slip ring 101 needs to simultaneously transmit the power supply signal of the heating plate 106 and the temperature measurement signal of the patch temperature sensor 107 to ensure the continuity of temperature control in the rotating state; the rotating part of the rotating conductive slip ring 101 is fixedly connected to the fixing frame 112 The top of the fixed frame 112 is fixedly connected to the outer cylinder 105, and the inner shaft 108 is placed inside the outer cylinder 105. An annular flow channel is formed between the outer cylinder 105 and the inner shaft 108. The lubricating oil to be tested is injected into the flow channel, and the flow channel gap is accurately controlled within the range of 2.0-3.0mm. The inner shaft 108 is hollow. For example, a titanium alloy hollow shaft is 30%-40% lighter than a solid shaft of the same size, reducing the energy consumption and inertia delay of the magnetic suspension system, and is suitable for high-frequency shear rate switching (such as 0.1-1000s -1 scanning);

[0042] Both ends of the inner shaft 108 are fixedly connected with a magnet block 109, which is a ring-shaped NdFeB N52 permanent magnet. The magnet block 109 is fixed to the inner shaft by heat press fitting to ensure a firm installation; the magnetic poles are axially distributed, forming a closed-loop control with the corresponding first coil 103 and second coil 110 to achieve stable suspension of the inner shaft 108, and the suspension gap is accurately controlled at 0.1-0.2mm, so that the inner shaft 108 is suspended on the inside of the outer cylinder 105, thereby completely eliminating the mechanical friction interference of the traditional bearing and avoiding obstruction of the inner shaft rotation; compared with the measurement method relying on the torque spring, this design not only saves the tedious steps of spring calibration, but also solves the problem caused by spring hysteresis. The measurement error is reduced, which significantly improves the overall detection accuracy; the bottom of the outer cylinder 105 is fixedly connected to the bottom plate 104, and the bottom plate 104 is made of tempered glass. This material has both high insulation and low magnetic permeability, which can isolate current interference and will not hinder the magnetic circuit coupling between the first coil 103 and the magnet block 109, thereby ensuring the stable operation of the magnetic levitation system. A second coil 110 fixedly connected to the moving mechanism 2 is arranged above the upper magnet block 109, and a first coil 103 is arranged below the bottom plate 104. The magnet blocks 109 at both ends of the inner shaft 108 correspond to the first coil 103 below and the second coil 110 above, respectively, forming a magnetic levitation control system that is symmetrical up and down.

[0043] The first coil 103 and the second coil 110 are both wound with high-temperature-resistant, highly conductive enameled wire and mounted on a specially designed magnetic yoke. The magnetic yoke is made of soft magnetic material, such as electrical pure iron (DT4C pure iron, relative magnetic permeability> 5000), which is used to enhance and guide the magnetic field and improve the efficiency and stability of the magnetic levitation system. The magnetic poles of the first coil 103 and the second coil 110 are axially distributed. By changing the current direction of the first coil 103 and the second coil 110, the magnetic polarity can be flexibly switched. In the detection state, the first coil 103 and the second coil 110 generate a magnetic field with the magnet block. The repulsive magnetic fields of 109 make the inner shaft 108 stably suspended inside the outer cylinder 105; when the outer cylinder 105 and the inner shaft 108 need to be cleaned, the second coil 110 is powered off, and the current direction is switched to reverse the magnetic pole of the first coil 103, generating an attractive force, and the inner shaft 108 is magnetically fixed to the inner side of the outer cylinder 105 through the magnet block 109 at the bottom, so as to facilitate subsequent flipping and flipping of the outer cylinder 105 and the inner shaft 108 at the same time. The bottom end of the first coil 103 is fixedly connected to the support column 102 fixedly connected to the carrier plate 9, and the support column 102 can rotate relative to the fixing frame 112.

[0044] A non-contact torque sensor 111 is provided on the outside of the inner shaft 108. When the outer cylinder 105 rotates, the lubricating oil in the annular flow channel generates a shear force due to viscosity, which drives the inner shaft 108 to produce a slight rotation tendency (because the inner shaft 108 is in a magnetic suspension state and there is no mechanical friction interference). The non-contact torque sensor 111 monitors this rotation tendency of the inner shaft 108 (for example, using the principle of magnetoelectric induction to detect the relative angular displacement between the inner shaft permanent magnet and the sensor coil) and can capture the torque value acting on the inner shaft 108 by the oil film in real time. This torque value is directly related to the dynamic viscosity of the lubricating oil (in accordance with Newton's law of viscosity), providing the most critical raw data for viscosity calculation. The non-contact design also avoids the measurement error caused by friction in traditional contact sensors (the error can be controlled within ±0.1μN·m).

[0045] At the same time, the kinematic viscosity calculation formula is:

[0046] T is the inner shaft torque (N·m), h is the annular flow channel gap (m), R is the inner shaft radius (m), L is the immersion length (m), ω is the outer cylinder angular velocity (rad / s), ρ is the lubricating oil density (g / cm 3 ).

[0047] A non-contact ultrasonic sensor 116 is fixedly connected to the bottom end of the non-contact torque sensor 111 . The non-contact ultrasonic sensor 116 can measure the depth of the lubricating oil inside the outer cylinder 105 (ie, the immersion length L of the inner shaft 108 ).

[0048] As a further improvement of the present invention, Figure 2As shown, a heating plate 106 and a patch temperature sensor 107 are fixedly connected to the inner side of the outer cylinder 105. The heating plate 106 can heat the lubricating oil in the annular flow channel to ensure that it is in the temperature range required for detection; the patch temperature sensor 107 monitors the lubricating oil temperature in real time and feeds the data back to the control system. By adjusting the working time and output power of the heating plate 106, precise control of the oil temperature is achieved.

[0049] As a further improvement of the present invention, Figure 4 As shown, one end of the carrier plate 9 is fixedly connected to a motor 115, and the outer side of the main shaft of the motor 115 is fixedly connected to a first gear 114, one end of the first gear 114 is meshed with a gear ring 113, and the gear ring 113 is fixedly connected to the fixed frame 112, and the end of the main shaft of the motor 115 is fixedly connected to a photoelectric encoder 117, and the photoelectric encoder 117 is fixedly connected to the carrier plate 9 through an external bracket. When the outer cylinder 105 needs to be rotated, the motor 115 is driven by the gear ring 113 to rotate through the gear 114, and the gear ring 113 is driven by the outer cylinder 105 to rotate through the fixed frame 112. When the outer cylinder 105 rotates, the lubricating oil in the annular flow channel generates shear force due to viscosity, driving the inner shaft 108 in a magnetic suspension state to rotate, and the angular velocity ω of the outer cylinder 105 can be measured by the photoelectric encoder 117.

[0050] As a further improvement of the present invention, Figure 3 As shown, the mobile mechanism 2 includes a first electric telescopic rod 201 fixedly connected to the second support frame 8, the bottom end of the first electric telescopic rod 201 is fixedly connected to a first fixed plate 202, and the first fixed plate 202 is fixedly connected to the second coil 110, one end of the linkage mechanism 3 is fixedly connected to the first fixed plate 202, the bottom end of the first fixed plate 202 is fixedly connected to a side plate 203, and the side plate 203 is fixedly connected to the non-contact torque sensor 111, and the first electric telescopic rod 201 can respectively connect the second coil 110 and the non-contact torque sensor 111 through the first fixed plate 202 and the side plate 203. The vertical position of the contact torque sensor 111 is adjusted so that the positions of the second coil 110 and the non-contact torque sensor 111 meet different usage requirements: when detecting the lubricating oil, the non-contact torque sensor 111 is sleeved on the outside of the inner shaft 108, and the distance between the second coil 110 and the corresponding magnet block 109 is 0.1-0.2mm; when the inner shaft 108 and the outer cylinder 105 need to be cleaned, the non-contact torque sensor 111 is moved away from the outside of the inner shaft 108 to ensure that the non-contact torque sensor 111 does not affect the flipping of the inner shaft 108.

[0051] As a further improvement of the present invention, Figure 1 、 Figure 2 and Figure 5As shown, the linkage mechanism 3 includes a first support frame 301 fixedly connected to the first fixed plate 202, the bottom end of the first support frame 301 is fixedly connected to a rack 302, one end of the rack 302 is meshed with a second gear 303, the outer sides of the rotating shafts at both ends of the second gear 303 are fixedly connected to first fixed beams 310, the other end of the first fixed beam 310 is fixedly connected to a second fixed beam 311, and the second fixed beam 311 is fixedly connected to the loading plate 9, the ends of the rotating shafts at both ends of the second gear 303 are fixedly connected to rotating blocks 304, and the rotating blocks 304 The outer side of the first fixing plate 202 is rotatably connected to a fixed shell 305, and the fixed shell 305 is fixedly connected to the second support frame 8. When the first fixing plate 202 moves in the vertical direction, the first fixing plate 202 will move relative to the rack 302 and the gear 303 through the first support frame 301, causing the gear 303 to flip with the first fixing beam 310 through the rotating shaft. At the same time, the first fixing beam 310 will also flip around the axis of the gear 303 with the outer cylinder 105 through the second fixing beam 311, the loading plate 9, the rotating conductive slip ring 101 and the fixing frame 112.

[0052] The height of the inner shaft 108 can be designed according to actual needs, and the distance between the second coil 110 and the non-contact torque sensor 111 can also be designed accordingly to ensure that when the outer cylinder 105 is in a vertical state, the distance between the first fixed plate 202 and the second coil 110 and the magnet block 109 just meets the usage requirements; at the same time, the first fixed plate 202 moves upward with the non-contact torque sensor 111 through the side plate 203. At the same time, when the outer cylinder 105 and the inner shaft 108 are flipped under the cooperation of the rack 302 and the gear 303, the inner shaft 108 does not touch the non-contact torque sensor 111 when the non-contact torque sensor 111 is not completely moved out from the outside of the inner shaft 108. When the inner shaft 108 and the outer cylinder 105 need to be cleaned, the outer cylinder 105 is flipped to be horizontally aligned with the connecting cylinder 501.

[0053] As a further improvement of the present invention, Figure 5 As shown, a partition 306 is fixedly connected to the inner side of the fixed shell 305, and a guide shaft 308 is slidably connected to the inner side of the partition 306. The top of the guide shaft 308 is fixedly connected to a clamping head 307 that engages with the rotating block 304. A spring 309 is provided on the outer side of the guide shaft 308, and the two ends of the spring 309 are fixedly connected to the partition 306 and the guide shaft 308 respectively. A slot that matches the clamping head 307 is provided at the bottom end of the rotating block 304. The spring 309 will carry the clamping head 307 through the slot through the guide shaft 308 and engage with the rotating block 304. When the clamping head 307 and the rotating block 304 are engaged together, the outer cylinder 105 is in a vertical state. With the cooperation of the clamping head 307 and the rotating block 304, the rotating block 304 and the gear 303 can be limited, thereby ensuring the stability of the outer cylinder 105 during operation.

[0054] As a further improvement of the present invention, Figure 1 、 Figure 3 and Figure 6 As shown, the positioning mechanism 4 includes a second electric telescopic rod 401 fixedly connected to the first support frame 301, the bottom end of the second electric telescopic rod 401 is fixedly connected to a connecting seat 402, the bottom end of the connecting seat 402 is rotatably connected to a connecting rod 403, the other end of the connecting rod 403 is rotatably connected to a moving frame 404, one end of the moving frame 404 is fixedly connected to a guide rod 405, and the guide rod 405 is slidably connected to the side plate 203, and the other end of the guide rod 405 is fixedly connected to a positioning block 406; the clamping surface of the positioning block 406 adopts an arc-shaped design, which perfectly matches the outer contour of the inner shaft 108; before performing the lubricating oil test, the inner shaft 108 is first manually placed in the outer cylinder 105 side; subsequently, the second electric telescopic rod 401 drives the positioning blocks 406 on both sides to synchronously clamp the inner shaft 108 through the linkage of the connecting seat 402, the connecting rod 403, the movable frame 404 and the guide rod 405; through this precise clamping and positioning, it is ensured that the vertical center line of the inner shaft 108 is completely coincident with the vertical center line of the outer cylinder 105. This design provides a core guarantee for the uniformity of the annular flow field and provides a stable basic condition for subsequent precise detection, thereby improving the accuracy and reliability of viscosity detection; after positioning is completed, the second electric telescopic rod 401 drives the positioning block 406 to retreat to a safe position ≥5mm away from the surface of the inner shaft 108 to avoid interfering with the rotation of the inner shaft 108.

[0055] As a further improvement of the present invention, Figure 1 、 Figure 7 and Figure 8As shown, the cleaning mechanism 5 includes a fourth electric telescopic rod 511 fixedly connected to the second fixed plate 7, the other end of the fourth electric telescopic rod 511 is fixedly connected to a fixing seat 513, and the other end of the fixing seat 513 is fixedly connected to a connecting tube 501. The length of the connecting tube 501 can be designed accordingly according to the length of the inner shaft 108 exposed outside the outer tube 105, ensuring that when the connecting tube 501 is fitted with the outer tube 105 through the sealing ring 502, the inner shaft 108 can be located inside the connecting tube 501, and ensuring that the end of the connecting shaft 108 does not affect the normal movement of the connecting disk 507; the end of the connecting tube 501 is fixedly connected to the sealing ring 502, the sealing ring 502 is made of rubber, and under the action of the sealing ring 502, the sealing between the connecting tube 501 and the outer tube 105 can be ensured. The inner side of the connecting tube 501 is fixedly connected with a fixing block 512, and one end of the fixing block 512 is rotatably connected to the nozzle 503 through a rotating shaft. A conducting tube 504 is connected between adjacent nozzles 503, and one end of one conducting tube 504 is connected to an infusion tube 505. The infusion tube 505 and the conducting tube 504 are made of soft tubes to ensure that the infusion tube 505 and the conducting tube 504 do not affect the normal activity of the nozzle 503; the infusion tube 505 is connected to a nozzle filled with cleaning liquid through an external water pump. The liquid storage tanks are connected together, and the external water pump will input the infusion tube cleaning liquid into the inner side of the nozzle 503 through the infusion tube 505 and the guide tube 504, and then the nozzle 503 will clean the surface of the inner shaft 108 and the inner wall of the outer tube 105; the bottom end of the connecting tube 501 is spirally connected to the connecting ring 509, and the bottom end of the connecting ring 509 is fixedly connected to the waste liquid pipe 510. When the outer tube 105 is flipped to be horizontally aligned with the connecting tube 501, the fourth electric telescopic rod 511 brings the connecting tube 501 through the fixing seat 513 and docks with the outer tube 105 through the sealing ring 502. Then, the nozzle 503 can be used to spray the inner side of the outer tube 105 for cleaning. Liquid; After the cleaning of the main area of ​​the inner wall of the outer cylinder 105 and the outer surface of the inner shaft 105 is completed, the first coil 103 is powered off. At this time, the part of the magnet block 109 and the outer cylinder 105 that has just been in contact is exposed to the outside, and then this part can be cleaned; the waste liquid generated by the cleaning will be discharged to the external waste liquid tank through the connecting ring 509 and the waste liquid pipe 510. The whole process is closed, thereby realizing automatic cleaning of the residual oil on the surface of the outer cylinder 105 and the inner shaft 108, without manual cleaning, facilitating the work of the staff and improving the overall work efficiency; after the cleaning is completed, the outer cylinder 105 can be reset and wait for the next detection use.

[0056] As a further improvement of the present invention, Figure 8As shown, one end of the connecting tube 501 is fixedly connected to the third electric telescopic rod 508, and the other end of the third electric telescopic rod 508 is fixedly connected to the connecting disk 507. One end of the connecting disk 507 is rotatably connected to the pull rod 506, and the other end of the pull rod 506 is rotatably connected to the nozzle 503. When the nozzle 503 sprays the cleaning liquid toward the inner side of the outer tube 105, the third electric telescopic rod 508 will swing with the nozzle 503 through the connecting disk 507 and the pull rod 506, thereby increasing the spraying cleaning range of the nozzle 503, and the spraying mode of the nozzle 503 is fan-shaped spraying, and the number of nozzles 503 can be designed according to the actual cleaning situation. The fan-shaped spraying angle of the nozzle 503 is 120°, and the spraying ranges of adjacent nozzles overlap by ≥10% to avoid cleaning blind spots on the surface of the inner shaft 108.

[0057] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the scope of protection of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A kinematic viscosity detection device for lubricating oil production and processing, comprising a base (6) and a second support frame (8), characterized in that: The top of the base (6) is fixedly connected to a second fixed plate (7) and a second support frame (8); one end of the second support frame (8) is fixedly connected to an operating screen (10); one end of the second fixed plate (7) is fixedly connected to a positioning mechanism (4); one end of the second support frame (8) is fixedly connected to a moving mechanism (2); different positions of the moving mechanism (2) are respectively fixedly connected to a linkage mechanism (3) and a positioning mechanism (4); one end of the linkage mechanism (3) is fixedly connected to a loading plate (9); and a detection mechanism (1) is provided at the top of the loading plate (9).

2. The kinematic viscosity testing device for lubricating oil production and processing according to claim 1, characterized in that: The detection mechanism (1) comprises a rotating conductive slip ring (101) fixedly connected to a carrier plate (9); a rotating portion of the rotating conductive slip ring (101) is fixedly connected to a fixing frame (112); a top end of the fixing frame (112) is fixedly connected to an outer cylinder (105); an inner shaft (108) is placed inside the outer cylinder (105); both ends of the inner shaft (108) are fixedly connected to magnet blocks (109); a bottom end of the outer cylinder (105) is fixedly connected to a bottom plate (104); and a magnet block (109) is fixedly connected to the inner end of the outer cylinder (105). A second coil (110) fixedly connected to the moving mechanism (2) is provided above the magnet block (109); a first coil (103) is provided below the base plate (104); a bottom end of the first coil (103) is fixedly connected to a support column (102) fixedly connected to the loading plate (9); a non-contact torque sensor (111) is provided on the outside of the inner shaft (108); and a non-contact ultrasonic sensor (116) is fixedly connected to the bottom end of the non-contact torque sensor (111).

3. The kinematic viscosity testing device for lubricating oil production and processing according to claim 2, characterized in that: A heating plate (106) and a patch temperature sensor (107) are fixedly connected to the inner side of the outer cylinder (105).

4. The kinematic viscosity testing device for lubricating oil production and processing according to claim 2, characterized in that: One end of the carrier plate (9) is fixedly connected to a motor (115), the outer side of the main shaft of the motor (115) is fixedly connected to a first gear (114), one end of the first gear (114) is meshed with a gear ring (113), and the gear ring (113) is fixedly connected to a fixed frame (112), and the end of the main shaft of the motor (115) is fixedly connected to a photoelectric encoder (117), and the photoelectric encoder (117) is fixedly connected to the carrier plate (9) via an external bracket.

5. The kinematic viscosity testing device for lubricating oil production and processing according to claim 1, characterized in that: The moving mechanism (2) comprises a first electric telescopic rod (201) fixedly connected to a second support frame (8); the bottom end of the first electric telescopic rod (201) is fixedly connected to a first fixed plate (202), and the first fixed plate (202) is fixedly connected to the second coil (110); one end of the linkage mechanism (3) is fixedly connected to the first fixed plate (202); the bottom end of the first fixed plate (202) is fixedly connected to a side plate (203), and the side plate (203) is fixedly connected to a non-contact torque sensor (111).

6. The kinematic viscosity testing device for lubricating oil production and processing according to claim 5, characterized in that: The linkage mechanism (3) comprises a first support frame (301) fixedly connected to the first fixed plate (202); a rack (302) is fixedly connected to the bottom end of the first support frame (301); one end of the rack (302) is meshed with a second gear (303); the outer sides of the rotating shafts at both ends of the second gear (303) are fixedly connected to first fixed beams (310); the other end of the first fixed beam (310) is fixedly connected to a second fixed beam (311); and the second fixed beam (311) is fixedly connected to the loading plate (9); the ends of the rotating shafts at both ends of the second gear (303) are fixedly connected to rotating blocks (304); the outer side of the rotating block (304) is rotatably connected to a fixed shell (305), and the fixed shell (305) is fixedly connected to the second support frame (8).

7. The kinematic viscosity testing device for lubricating oil production and processing according to claim 1, characterized in that: A partition (306) is fixedly connected to the inner side of the fixed shell (305), a guide shaft (308) is slidably connected to the inner side of the partition (306), a clamping head (307) engaged with the rotating block (304) is fixedly connected to the top of the guide shaft (308), and a spring (309) is provided on the outer side of the guide shaft (308), and the two ends of the spring (309) are fixedly connected to the partition (306) and the guide shaft (308) respectively.

8. The kinematic viscosity testing device for lubricating oil production and processing according to claim 6, characterized in that: The positioning mechanism (4) comprises a second electric telescopic rod (401) fixedly connected to the first support frame (301); the bottom end of the second electric telescopic rod (401) is fixedly connected to a connecting seat (402); the bottom end of the connecting seat (402) is rotatably connected to a connecting rod (403); the other end of the connecting rod (403) is rotatably connected to a moving frame (404); one end of the moving frame (404) is fixedly connected to a guide rod (405), and the guide rod (405) is slidably connected to the side plate (203); the other end of the guide rod (405) is fixedly connected to a positioning block (406).

9. The kinematic viscosity testing device for lubricating oil production and processing according to claim 1, characterized in that: The cleaning mechanism (5) comprises a fourth electric telescopic rod (511) fixedly connected to the second fixed plate (7); the other end of the fourth electric telescopic rod (511) is fixedly connected to a fixing seat (513); the other end of the fixing seat (513) is fixedly connected to a connecting tube (501); the end of the connecting tube (501) is fixedly connected to a sealing ring (502); the inner side of the connecting tube (501) is fixedly connected to a fixing block (512); one end of the fixing block (512) is rotatably connected to a nozzle (503) via a rotating shaft; adjacent nozzles (503) are connected by a conducting tube (504); one end of one of the conducting tubes (504) is connected to an infusion tube (505); The bottom end of the connecting cylinder (501) is spirally connected to a connecting ring (509), and the bottom end of the connecting ring (509) is fixedly connected to a waste liquid pipe (510).

10. The kinematic viscosity testing device for lubricating oil production and processing according to claim 1, characterized in that: One end of the connecting tube (501) is fixedly connected to a third electric telescopic rod (508), the other end of the third electric telescopic rod (508) is fixedly connected to a connecting disk (507), one end of the connecting disk (507) is rotatably connected to a pull rod (506), and the other end of the pull rod (506) is rotatably connected to the nozzle (503).

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