A viscosity detection device and detection method based on lubricating oil production

Abstract

The present invention discloses a viscosity detection device and detection method based on lubricating oil production, and the present invention relates to the field of viscosity detection technology. The viscosity detection device and detection method based on lubricating oil production include a shell with a control screen, a support column fixed at the bottom of the shell and matched with a base to provide support, and a storage cup for holding samples, a support plate for weighing samples is installed on the support column, a weighing area is arranged in the center of the support plate, and a detection component for detecting the viscosity of the lubricating oil is arranged above the support plate, and the detection component includes: one end of a suction pipe is slidably arranged in the shell and connected with a capillary to convey the lubricating oil to be detected to the capillary; the viscosity of the lubricating oil is measured by weighing, and the weight of each time point during the outflow of the lubricating oil is recorded, so as to obtain a more detailed flow curve, provide very accurate data, and can be carried out under static conditions, avoiding measurement errors caused by bubbles and improving measurement accuracy.

Description

Technical Field

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

[0002] At present, in the production process of lubricating oil, in order to ensure the quality of the lubricating oil produced, it is usually necessary to conduct multiple tests on the lubricating oil, including viscosity test. When conducting viscosity test, a capillary viscometer is often used. In the process of testing lubricating oil with an existing capillary viscometer, multiple preparations for the sample are required, and skilled operation skills are required. Bubbles are easily introduced during the processing and loading of samples, causing measurement errors, resulting in inaccurate measurement results.

[0003] For example, a viscosity detection device for lubricating oil production disclosed by announcement number CN214277787U has the problem that bubbles are easily generated during the stirring process of the lubricating oil, which causes measurement errors. A high-precision viscosity capillary detection device disclosed by announcement number CN111175183A, although it uses automatic image recognition technology to automatically identify whether the lubricating oil flows through the scale line, the lubricating oil is usually colored and a certain amount of lubricating oil will remain on the tube wall during the process of flowing down along the capillary, affecting the recognition accuracy and causing different measurement results. A capillary viscometer disclosed by announcement number CN219777414U, although it can fix the viscometer to prevent angle deviation during the measurement process, is prone to bubbles during sample injection due to the discontinuous injection process;

[0004] Therefore, a viscosity detection device and a detection method based on lubricating oil production are proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a viscosity detection device and detection method based on lubricating oil production, which solves the problem that bubbles are easily introduced into the existing capillary viscometer during the detection of lubricating oil, causing measurement errors and inaccurate measurement results.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a viscosity detection device based on lubricating oil production, comprising a housing with a control screen, a support column fixed at the bottom of the housing and cooperating with a base to provide support, and a storage cup for holding samples, a support plate for weighing samples is installed on the support column, a weighing area is provided in the center of the support plate, a detection component for detecting the viscosity of the lubricating oil, a switching component for switching the lubricating oil to be detected, and a removal component for improving the measurement accuracy are provided above the support plate, and the detection component includes:

[0007] The suction pipe has one end which is slidably arranged in the shell and connected with a capillary tube to convey the lubricating oil to be tested, and the other end is located between the shell and the support plate and just above the storage cup;

[0008] A guide block is fixed outside the suction pipe and slidably penetrates the shell to fix the angle of the capillary tube;

[0009] The tension sensor is installed outside the capillary through a clamp ring to measure the weight of the capillary, guide block, suction tube and internal lubricating oil sample.

[0010] Preferably, the detection component also includes:

[0011] The electric push rod has one end fixed to the bottom of the inner wall of the housing, and the other end fixed to one end of the tension sensor through a connecting plate to provide support for the tension sensor;

[0012] One end of the hose is connected to the branch of the capillary tube, and the other end is connected to an air pump. The top of the air pump is fixed to the top of the inner wall of the shell through a mounting column. The air pump extracts gas in the capillary tube and the suction tube through the hose.

[0013] Preferably, the detection component also includes:

[0014] An isolation box is fixedly sleeved on one end of the capillary tube to adjust the air intake mode of the capillary tube, and an air inlet is opened on the side wall of the isolation box;

[0015] A sealing plate is slidably abutted in the isolation box for closing or opening the air inlet, and a sliding electromagnet is fixed on the side wall of the sealing plate;

[0016] A guide rod, one end of which is fixed to the bottom of the inner wall of the isolation box, and the other end of which slides out from the sliding electromagnet, wherein a fixed electromagnet is fixed to one end of the guide rod;

[0017] A control switch is fixed outside the isolation box to control the magnetism between the sliding electromagnet and the fixed electromagnet;

[0018] One end of the toggle lever is fixed to the bottom of the air pump, and the other end is located below the control switch to change the state of the control switch.

[0019] Preferably, the switching component includes:

[0020] A push rod, one end of which is fixed to the side wall of the guide block and the other end of which is provided with an inclined surface;

[0021] The power slide bar has an inclined surface at one end and is slidably matched with the inclined surface of the push rod, and a support plate is slidably penetrated at the other end, and a spring 1 capable of returning the power slide bar to its original position is fixed between the inner wall of the support plate and the power slide bar;

[0022] A fixed claw is fixed to one end of the support plate to provide support for the storage cup;

[0023] The stopper is slidably arranged in the support plate to limit the storage cup, and a spring 2 capable of resetting the stopper is fixed between the side wall of the stopper and the support plate.

[0024] Preferably, the switching component further includes:

[0025] The sliding rope is slidably inserted into the support plate and the fixing claw, one end of which is fixed on the side wall of the stopper, and the other end of which is fixed on the side wall of the power slide bar, so that the power slide bar can pull the stopper to slide through the sliding rope;

[0026] The rotating ring is movably sleeved on the supporting column through a bearing to provide support for the supporting plate, and a gear ring is fixed on the top of the rotating ring.

[0027] Preferably, the switching component further includes:

[0028] Gear 1 is meshed with the gear ring so that the gear ring can rotate synchronously with gear 1;

[0029] The rotating shaft has one end fixed on the top of gear one for transmission, and the other end is fixed with a power motor so that the power motor can drive gear one to rotate through the rotating shaft. The power motor is fixed in the housing through a mounting plate.

[0030] Preferably, the removal component includes:

[0031] A driving motor is installed on the base through a motor seat to drive the removal component to operate, and a movable shaft for transmission is connected to the output end of the driving motor;

[0032] Gear 2 is fixed to one end of the movable shaft and is used to assist the removal of the assembly, and a rack is meshed on the gear 2;

[0033] A striker rod, the bottom of which is fixed to the top of the rack and is used to assist in the operation of the removal assembly;

[0034] The guide rail is fixed on the base through support legs to provide support for the impact rod, and one end of the impact rod is slidably arranged on the guide rail.

[0035] Preferably, the removal component also includes:

[0036] The material removal rod is located in the material storage cup and is used to cut off the lubricating oil between the suction pipe and the material storage cup during detection;

[0037] The flip shaft, both ends of which are movably mounted in the storage cup through bearings to provide support for the material removal rod;

[0038] One end of the driven rod is fixed on the side wall of the material-moving rod, and the other end is located between the impact rods and is used to turn the material-moving rod under the drive of the impact rod.

[0039] The present invention also provides a detection method for a viscosity detection device based on lubricating oil production, comprising the following steps:

[0040] S1. Place the storage cup containing the lubricating oil to be tested on the switching component, operate the switching component through the control panel, and switch the storage cup to the testing position;

[0041] S2. Use the control panel to operate the detection component, so that the suction tube extends into the storage cup, and the lubricating oil in the storage cup is sucked into the capillary tube. The storage cup is weighed by the support plate before and during the suction process;

[0042] S3. After the lubricating oil is sucked out, the suction tube is removed from the storage cup, and the weight of the capillary, the guide block and the suction tube after the lubricating oil is sucked is detected by the tension sensor, and the storage cup and the remaining sample are weighed by the support plate at the same time;

[0043] S4. Control the detection component to run through the control panel, so that the lubricating oil in the capillary tube flows back into the storage cup under the action of gravity;

[0044] S5. The viscosity of the lubricating oil is calculated using the Hagen-Poiseuille equation by real-time detection of the weight of the storage cup and the capillary tube, guide block, and suction tube from which the lubricating oil is flowing out.

[0045] Preferably, a pressure sensor for measuring the air pressure in the capillary is installed in the capillary, and the tension sensor detects the weight 2-4 seconds after the electric push rod stops moving.

[0046] The present invention provides a viscosity detection device and detection method based on lubricating oil production. Compared with the prior art, it has the following beneficial effects:

[0047] (1) The viscosity detection device and detection method based on lubricating oil production use weighing to measure the viscosity of the lubricating oil. By recording the weight of the lubricating oil at each time point during its outflow, a more detailed flow curve is obtained, providing very accurate data. The device can be performed under static conditions, avoiding measurement errors caused by bubbles, improving measurement accuracy, and adapting to the measurement requirements of different sample quantities. The device is highly flexible and suitable for a variety of lubricating oils from low viscosity to high viscosity. The device has a wide range of applications and is convenient for retaining samples for audits or compliance inspections. The device can also compare and analyze lubricating oils from different production batches, providing conditions for quality traceability. The device can also be used to compare the effects of different formulations, develop new products, and optimize product performance.

[0048] (2) The viscosity detection device and detection method based on lubricating oil production use a power motor to transfer the sample to be tested to the weighing sampling point. During the process, the storage cup can be automatically released to the weighing area for weighing before the sample lubricating oil is absorbed, which reduces the workload of operators, reduces the errors caused by human operation, and reduces the pollution that may be caused during manual operation. It can quickly switch between samples of different batches to perform viscosity detection to ensure product quality, and is convenient for the quality department to regularly perform viscosity detection on the inventory samples produced to ensure the stability of the product. Through the automated operation process, the consistency and repeatability of each measurement can be ensured.

[0049] (3) The viscosity detection device and detection method based on lubricating oil production are provided with a driving motor, a movable shaft, a second gear, a rack, an impact rod, a guide rail, a driven rod, a material removal rod, and a flip shaft. During the weighing detection process, a time interval is set so that the material removal rod intermittently wipes off the lubricating oil that has not completely fallen into the storage cup at the end of the suction pipe, so that there will be no lubricating oil between the suction pipe and the storage cup, thereby avoiding data fluctuations caused by variable interference at the end of the suction pipe, and further improving the measurement accuracy.

[0050] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0052] Figure 2 Another perspective view of the overall structure of the present invention;

[0053] Figure 3 It is a cross-sectional structural diagram of the housing of the present invention;

[0054] Figure 4 is a structural diagram of the detection component of the present invention;

[0055] Figure 5 It is a cross-sectional structural diagram of the isolation box of the present invention;

[0056] Figure 6 For the present invention Figure 5 The enlarged view of point A in the middle;

[0057] Figure 7 It is a partial structural diagram of the switching component of the present invention;

[0058] Figure 8 is a cross-sectional structural diagram of the support plate of the present invention;

[0059] Fig. 9 It is a cross-sectional structural diagram of the support plate of the present invention from another viewing angle;

[0060] Fig.10 It is a cross-sectional structural diagram of the material storage cup of the present invention;

[0061] Fig.11 A structural diagram with components removed for the present invention;

[0062] Fig.12 It is a structural diagram of the rack of the present invention.

[0063] In the figure: 1, housing; 11, base; 12, support plate; 13, support column; 2, suction pipe; 21, guide block; 22, capillary; 23, clamp ring; 24, tension sensor; 25, electric push rod; 26, hose; 27, air pump; 3, isolation box; 31, sealing plate; 32, guide rod; 33, sliding electromagnet; 34, fixed electromagnet; 35, control switch; 36, toggle rod; 4, push rod; 41, power slide rod; 42. Spring 1; 43. Support plate; 431. Fixed claw; 44. Sliding rope; 45. Stopper; 46. Spring 2; 47. Material storage cup; 48. Rotating ring; 49. Gear ring; 410. Gear 1; 411. Rotating shaft; 412. Power motor; 5. Driving motor; 51. Movable shaft; 52. Gear 2; 53. Rack; 54. Impact rod; 55. Guide rail; 56. Follower rod; 57. Material removal rod; 58. Flipping shaft. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0065] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0066] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the present invention provides the following technical solutions: a viscosity detection device based on lubricating oil production, comprising a housing 1 with a control screen, a support column 13 fixed at the bottom of the housing 1 and cooperating with a base 11 to provide support, and a storage cup 47 for holding a sample, a support plate 12 for weighing the sample is installed on the support column 13, a weighing area is provided in the center of the support plate 12, and a detection component for detecting the viscosity of the lubricating oil is provided above the support plate 12, and the detection component includes: a suction pipe 2, a guide block 21, a capillary 22, a clamping ring 23, a tension sensor 24, an electric push rod 25, a hose 26, and an air pump 27;

[0067] One end of the suction pipe 2 is slidably disposed in the housing 1, and the end of the suction pipe 2 located in the housing 1 is connected to a capillary 22 to transport the lubricating oil to be tested to the capillary 22, and the other end of the suction pipe 2 is located between the housing 1 and the support plate 12, and directly above the storage cup 47;

[0068] The inner wall of the guide block 21 is fixedly mounted outside the suction pipe 2 and slidably penetrates the housing 1 to fix the angle of the capillary tube 22;

[0069] The detection end of the tension sensor 24 is fixedly mounted on the clamp ring 23, and the clamp ring 23 is fixedly sleeved outside the capillary 22. The weight of the capillary 22, the guide block 21, the suction pipe 2 and the internal lubricating oil sample is measured by the tension sensor 24;

[0070] One end of the electric push rod 25 is fixedly mounted on the bottom of the inner wall of the housing 1, and the other end of the electric push rod 25 is fixedly mounted with a connecting plate, the bottom of the connecting plate is fixedly connected to one end of the tension sensor 24, and the connecting plate provides support for the tension sensor 24;

[0071] One end of the hose 26 is connected and installed at the branch of the capillary 22, and the other end of the hose 26 is connected and installed on the output end of the air pump 27. A mounting column is fixedly installed on the top of the air pump 27, and the top of the mounting column is fixedly installed on the top of the inner wall of the outer shell 1. The air pump 27 extracts gas from the capillary 22 and the suction pipe 2 through the hose 26.

[0072] When in use, the lubricating oil to be tested is put into the storage cup 47, and placed on the weighing area on the support plate 12 for weighing to obtain a known weight A. The weight of the empty storage cup 47 is a fixed value B. The weight of the empty capillary 22, the guide block 21 and the suction pipe 2 is measured by the tension sensor 24 to obtain a known weight C. Then the electric push rod 25 is started by the control panel. The electric push rod 25 drives the tension sensor 24 to move downward through the connecting plate. The tension sensor 24 drives the capillary 22 to move downward through the retaining ring 23. The capillary 22 drives the suction pipe 2 and the guide block 21 to move downward synchronously. The guide block 21 and the housing 1 are slidably matched so that the guide block 21 can only move in a straight line. When the suction pipe 2 extends into the storage cup 47 and reaches the suction position, the electric push rod 25 is controlled to stop moving, the end of the capillary 22 away from the suction pipe 2 is blocked, and the air is started. Pump 27, the air pump 27 is connected to the straight tube of the capillary 22 through the hose 26, so that the air pump 27 can suck the lubricating oil in the storage cup 47 from the suction pipe 2 into the capillary 22, and at most does not reach the corner just above the buffer ball of the capillary 22, turn off the air pump 27 and control the electric push rod 25 to move up again, move the suction pipe 2 out of the storage cup 47, stop moving and stay still for 2-3S after reaching the detection height, and use the tension sensor 24 to detect the total weight of the capillary 22, the guide block 21 and the suction pipe 2 after the lubricating oil is absorbed to obtain a known weight D, and the weighing area on the support plate 12 is used to weigh the remaining lubricating oil and the total weight E of the storage cup 47, and use the pressure sensor to detect the air pressure in the capillary 22 to obtain the pressure difference P at both ends of the capillary 22, the radius of the capillary 22 is a known value r, and the length of the capillary 22 is a known value L;

[0073] At this time, open the end of the capillary 22 away from the suction tube 2, so that the lubricating oil in the capillary 22 falls into the storage cup 47 below along the suction tube 2. The changes in the known weight D and the total weight E are detected in real time through the tension sensor 24 and the weighing area on the support plate 12 after the lubricating oil starts to fall, and a time interval is set, which is every second or every few seconds until the lubricating oil completely flows out of the capillary 22. After the detection, the final weight F of the storage cup 47 and the lubricating oil and the final weight G of the lubricating oil adhering to the capillary 22, the guide block 21, the suction tube 2 and the inner wall are obtained. The average flow rate Q in each time interval is obtained by calculation, and the viscosity of the measured lubricating oil can be calculated by substituting the above known values ​​into the Hagen-Poiseuille equation.

[0074] In another embodiment different from the above-mentioned embodiment, Figure 4 , Figure 5 , Figure 6 As shown, the detection assembly also includes: an isolation box 3, a sealing plate 31, a guide rod 32, a sliding electromagnet 33, a fixed electromagnet 34, a control switch 35, and a toggle rod 36;

[0075] One end of the isolation box 3 is fixedly sleeved on one end of the capillary 22 to adjust the air intake mode of the capillary 22. An air inlet is opened on the side wall of the isolation box 3 to isolate the end of the capillary 22 away from the suction pipe 2 through the isolation box 3.

[0076] The outer wall of the sealing plate 31 is slidably abutted against the inside of the isolation box 3 for closing or opening the air inlet, and a sliding electromagnet 33 is fixedly mounted on the side wall of the sealing plate 31;

[0077] One end of the guide rod 32 is fixedly mounted on the bottom of the inner wall of the isolation box 3, and the other end of the guide rod 32 slides out from the sliding electromagnet 33. A fixed electromagnet 34 is fixed to one end of the guide rod 32, and the fixed electromagnet 34 is located directly above the sliding electromagnet 33.

[0078] The outer wall of the control switch 35 is fixedly mounted on the outer wall of the isolation box 3, and the control switch 35 is used to control the magnetism between the sliding electromagnet 33 and the fixed electromagnet 34;

[0079] One end of the toggle rod 36 is fixedly mounted on the bottom of the air pump 27 , and the other end of the toggle rod 36 is located below the control switch 35 for changing the state of the control switch 35 .

[0080] During use, when the suction pipe 2 extends into the storage cup 47 to prepare to absorb the lubricating oil, the capillary 22 drives the isolation box 3 to move downward synchronously, so that the isolation box 3 drives the control switch 35 to move downward synchronously. During the downward movement of the control switch 35, the control switch 35 is toggled by the toggle rod 36, so that the magnetism between the sliding electromagnet 33 and the fixed electromagnet 34 controlled by the control switch 35 becomes mutually exclusive, so that the sliding electromagnet 33 slides along the guide rod 32 to the side away from the fixed electromagnet 34, and the sliding electromagnet 33 drives the sealing plate 31 to slide synchronously, so that the sealing plate 31 blocks the air inlet on the isolation box 3. At this time, the air pump 27 is turned on to absorb the lubricating oil in the storage cup 47 into the capillary 22 through the suction pipe 2.

[0081] When the suction pipe 2 is driven by the electric push rod 25 to move up to the detection height, the capillary 22 drives the isolation box 3 to move up synchronously, so that the isolation box 3 drives the control switch 35 to move up synchronously. During the upward movement of the control switch 35, the toggle rod 36 toggles the control switch 35 again, so that the control switch 35 controls the magnetism between the sliding electromagnet 33 and the fixed electromagnet 34 to become attractive, so that the sliding electromagnet 33 slides along the guide rod 32 to the side close to the fixed electromagnet 34, so that the sealing plate 31 opens the air inlet on the isolation box 3. At this time, the lubricating oil in the suction pipe 2 and the capillary 22 will drip from the suction pipe 2 into the storage cup 47 below.

[0082] In another embodiment different from the aforementioned embodiment, the toggle rod 36 is no longer fixedly installed on the bottom of the air pump 27, but is fixedly installed on the output end of an electric telescopic rod. After moving to the detection height on the capillary 22 and pausing for 2-3S, the electric telescopic rod drives the toggle rod 36 to move and switch the magnetism of the fixed electromagnet 34 and the sliding electromagnet 33, so that the sealing plate 31 opens the air inlet. During the process of absorbing the lubricating oil, the electric telescopic rod also drives the toggle rod 36 to move and switch.

[0083] In another embodiment different from the aforementioned embodiment, in order to further reduce the influence of the sealing plate 31 on the known weight D during the opening and closing process, a magnetorheological damper or a component with the same function is arranged between the fixed electromagnet 34 and the sliding electromagnet 33, so that the influence of the sliding electromagnet 33 on the detection of the known weight D by the tension sensor 24 is minimized during the movement of the sliding electromagnet 33 along the guide rod 32.

[0084] In another embodiment different from the above-mentioned embodiment, Figure 1 , Figure 7 , Figure 8 , Fig. 9 As shown: a switching assembly for switching the lubricating oil to be detected is arranged above the support plate 12, and the switching assembly includes: a push rod 4, a power slide bar 41, a spring 1 42, a support plate 43, a fixed claw 431, a sliding rope 44, a stopper 45, a spring 2 46, a storage cup 47, a rotating ring 48, a gear ring 49, a gear 1 410, a rotating shaft 411, and a power motor 412;

[0085] One end of the push rod 4 is fixedly mounted on the side wall of the guide block 21, and the other end of the push rod 4 is provided with an inclined surface;

[0086] One end of the power slide bar 41 is also provided with an inclined surface and is slidably adapted with the inclined surface provided on the push rod 4. The other end of the power slide bar 41 is slidably penetrated in the support plate 43. The inner wall of the support plate 43 is fixedly connected with one end of a spring 1 42. The other end of the spring 1 42 is fixedly mounted on the side wall of the power slide bar 41. The spring 1 42 can reset the power slide bar 41.

[0087] One end of the fixing claw 431 is fixedly mounted on one end of the supporting plate 43, and the inner wall of the fixing claw 431 is in sliding contact with the outer wall of the material storage cup 47;

[0088] One end of the stopper 45 is slidably disposed in the support plate 43, the top of the stopper 45 is in contact with the material storage cup 47, the side wall of the stopper 45 is fixedly connected to one end of the second spring 46, the other end of the second spring 46 is fixedly mounted on the inner wall of the support plate 43, the second spring 46 can reset the stopper 45, and the fixed claw 431 and the stopper 45 cooperate with each other to provide support for the material storage cup 47;

[0089] The sliding rope 44 is integrally slidably arranged in the support plate 43 and the fixed claw 431, one end of the sliding rope 44 is fixedly mounted on the side wall of the stopper 45, and the other end of the sliding rope 44 is fixedly mounted on the side wall of the power slide bar 41, so that the power slide bar 41 can pull the stopper 45 to slide through the sliding rope 44;

[0090] The inner ring outer wall of the rotating ring 48 is movably mounted on the support column 13 through the bearing to provide support for the support plate 43, and a gear ring 49 is fixedly installed on the top of the rotating ring 48;

[0091] The gear 1 410 is meshedly connected to the gear ring 49, so that the gear ring 49 can rotate synchronously with the gear 1 410;

[0092] One end of the rotating shaft 411 is fixedly installed on the top of the gear 410, and the other end of the rotating shaft 411 is fixedly installed on the output end of the power motor 412 through a coupling, so that the power motor 412 can drive the gear 410 to rotate through the rotating shaft 411, and the outer wall of the power motor 412 is fixedly installed in the outer shell 1 through a mounting plate.

[0093] When in use, when the suction pipe 2 moves downward and extends into the storage cup 47 to absorb the lubricating oil, the guide block 21 will synchronously drive the push rod 4 to move downward, and the push rod 4 will squeeze the power slide bar 41 to move linearly along the support plate 43 and slide toward the side close to the rotating ring 48 through the sliding cooperation between the inclined surface of the push rod 4 and the inclined surface of the power slide bar 41, and the sliding cooperation between the power slide bar 41 and the support plate 43, so that the push rod 4 can finally extend from the through hole opened in the support plate 43 to the bottom of the support plate 43, and the power slide bar 41 will slide along the support plate 43. When the lever 43 moves, it drives the sliding rope 44 to move synchronously, and the sliding rope 44 drives the stopper 45 to move toward the side where the power slide rod 41 is located, so that the stopper 45 retracts into the fixed claw 431. At this time, the stopper 45 no longer provides support for the contact between the storage cup 47, and the storage cup 47 will fall to the weighing area on the lower support plate 12. At the same time, the handle of the storage cup 47 is still in the fixed claw 431, but the fixed claw 431 does not provide support for the storage cup 47. At this time, when the support plate 12 is weighed, the known weight A of the storage cup 47 and the internal lubricating oil can be measured;

[0094] Then the suction tube 2 moves up to the detection height, the push rod 4 is separated from the power slide bar 41, the power slide bar 41 is reset under the action of the spring 1 42, the power slide bar 41 no longer applies tension to the sliding rope 44, the sliding rope 44 no longer applies tension to the stopper 45, so that the stopper 45 is reset under the action of the spring 2 46, and the handle of the storage cup 47 is located just below the stopper 45 and just above the fixed claw 431;

[0095] After the detection is completed, the power motor 412 is started to drive the rotating shaft 411 to rotate, the rotating shaft 411 drives the gear 410 to rotate, the gear 410 drives the gear ring 49 to rotate with the support column 13 as the axis, the gear ring 49 drives the rotating ring 48 to rotate synchronously, the rotating ring 48 drives the support plate 43 and the fixed claw 431 to rotate, so that the fixed claw 431 drives the storage cup 47 to move out from the support plate 12, and the next storage cup 47 containing the lubricating oil to be tested is transferred to the support plate 12.

[0096] In another embodiment different from the above-mentioned embodiment, Figure 3 , Fig.10 , Fig.11 , Fig.12 As shown: a removal component for improving the measurement accuracy is arranged above the support plate 12, and the removal component includes: a driving motor 5, a movable shaft 51, a second gear 52, a rack 53, a striking rod 54, a guide rail 55, a driven rod 56, a material removing rod 57, and a flip shaft 58;

[0097] The outer wall of the driving motor 5 is fixedly mounted on the base 11 through a motor seat to drive the removal assembly to operate, and a movable shaft 51 for transmission is fixedly connected to the output end of the driving motor 5 through a coupling;

[0098] The side wall of the second gear 52 is fixedly mounted on one end of the movable shaft 51 to assist the removal of the assembly, and a rack 53 is meshedly connected to the second gear 52;

[0099] The bottom of the impact rod 54 is fixedly connected to the top of the rack 53. The impact rod 54 is generally arranged in an approximately H-shape and cooperates with the driven rod 56 to assist in the operation of the removal assembly.

[0100] Both ends of the guide rail 55 are fixedly mounted on the base 11 through support legs to provide support for the impact rod 54, and one end of the impact rod 54 is slidably arranged on the guide rail 55;

[0101] One end of the driven rod 56 is fixedly mounted on the side wall of the material-moving rod 57, and the other end of the driven rod 56 is located between the impact rods 54. The material-moving rod 57 is flipped under the drive of the impact rod 54. The driven rod 56 is a telescopic rod that can automatically reset. When the rotating ring 48 rotates to switch the material storage cup 47, the driven rod 56 first slides and abuts against one of the impact rods 54 to shorten, and then automatically extends and resets when it rotates to between the two vertical parts of the H-shaped impact rod 54.

[0102] The inner wall of the material-moving rod 57 is fixedly connected to the turning shaft 58. One end of the material-moving rod 57 is located in the material storage cup 47. The other end of the material-moving rod 57 is approximately T-shaped and is located directly below the material suction pipe 2. It is used to cut off the lubricating oil connected between the material suction pipe 2 and the material storage cup 47 during detection.

[0103] Both ends of the turning shaft 58 are movably mounted in the material storage cup 47 through bearings to provide support for the material removing rod 57 .

[0104] When in use, the driving motor 5 intermittently drives the movable shaft 51 to rotate clockwise, the movable shaft 51 drives the gear 2 52 to rotate, the gear 2 52 drives the rack 53 to move, the rack 53 drives the impact rod 54 to move, and the impact rod 54 and the guide rail 55 slide together to make the impact rod 54 move linearly along the guide rail 55, the impact rod 54 squeezes the driven rod 56 to move, so that the driven rod 56 is flipped about the flip axis 58, and the lubricating oil flowing out of the suction pipe 2 and connected to the bottom of the inner wall of the storage cup 47 is cut off, and then the driving motor 5 intermittently drives the movable shaft 51 to rotate counterclockwise, so that the impact rod 54 squeezes the driven rod 56 to move again, so that the driven rod 56 is flipped back about the flip axis 58. Fig.10 Status shown.

[0105] The embodiment of the present invention also provides a detection method applicable to a viscosity detection device based on lubricating oil production, comprising the following steps:

[0106] S1. Place the storage cup 47 containing the lubricating oil to be tested on the switching component, operate the switching component through the control panel, and switch the storage cup 47 to the testing position;

[0107] S2. The detection component is operated by the control panel to extend the suction pipe 2 into the storage cup 47 to absorb the lubricating oil in the storage cup 47 into the capillary 22. The storage cup 47 is weighed by the support plate 12 before and during the absorption.

[0108] S3, after the lubricating oil is sucked, the suction tube 2 is moved out of the storage cup 47, and the weight of the capillary 22, the guide block 21 and the suction tube 2 after the lubricating oil is sucked is detected by the tension sensor 24, and the storage cup 47 and the remaining sample are weighed by the support plate 12;

[0109] S4, control the detection component to run through the control panel, so that the lubricating oil in the capillary 22 flows back into the storage cup 47 under the action of gravity;

[0110] S5, by real-time detection of the weight of the storage cup 47 and the capillary tube 22, the guide block 21, and the suction tube 2 from which the lubricating oil is flowing out, the viscosity of the lubricating oil is calculated using the Hagen-Poiseuille equation;

[0111] A pressure sensor for measuring the air pressure in the capillary 22 is fixedly installed in the capillary 22 , and the tension sensor 24 detects the weight when the electric push rod 25 stops moving for 2-4 seconds.

[0112] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0113] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0114] Parallel: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, which allows for non-absolute parallelism due to factors such as assembly tolerance, design tolerance, and the influence of structural flatness. Small angular errors are allowed. For example, an assembly error range of less than 10 degrees can be understood as a parallel relationship.

[0115] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0116] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A viscosity detection device based on lubricating oil production, comprising a housing (1) with a control screen, a support column (13) fixed to the bottom of the housing (1) and cooperating with a base (11) to provide support, and a storage cup (47) for holding a sample, characterized in that: A support plate (12) for weighing a sample is mounted on the support column (13), a weighing area is provided in the center of the support plate (12), and a detection component for detecting the viscosity of the lubricating oil, a switching component for switching the lubricating oil to be detected, and a removal component for improving the measurement accuracy are provided above the support plate (12), wherein the detection component comprises: A suction pipe (2), one end of which is slidably disposed in the housing (1) and is connected to a capillary (22) for conveying lubricating oil to be tested to the capillary (22), and the other end of which is located between the housing (1) and the support plate (12) and directly above the storage cup (47); A guide block (21) is fixed outside the suction pipe (2) and slidably penetrates the housing (1) to fix the angle of the capillary tube (22); A tension sensor (24) is sleeved on the outside of the capillary tube (22) through a clamp ring (23) to measure the weight of the capillary tube (22), the guide block (21), the suction tube (2) and the internal lubricating oil sample; An electric push rod (25), one end of which is fixed to the bottom of the inner wall of the housing (1), and the other end of which is fixed to one end of the tension sensor (24) through a connecting plate to provide support for the tension sensor (24); An isolation box (3) is fixedly sleeved on one end of the capillary tube (22) to adjust the air intake mode of the capillary tube (22), and an air intake port is opened on the side wall of the isolation box (3); A sealing plate (31) is slidably abutted in the isolation box (3) for closing or opening the air inlet, and a sliding electromagnet (33) is fixed on a side wall of the sealing plate (31); A guide rod (32), one end of which is fixed to the bottom of the inner wall of the isolation box (3), and the other end of which slides out from the sliding electromagnet (33), and a fixed electromagnet (34) is fixed to one end of the guide rod (32); The control switch (35) is fixed on the outside of the isolation box (3) to control the magnetism between the sliding electromagnet (33) and the fixed electromagnet (34).

2. A viscosity detection device based on lubricating oil production according to claim 1, characterized in that: The detection component also includes: A hose (26) has one end connected to the branch of the capillary tube (22) and the other end connected to an air pump (27). The top of the air pump (27) is fixed to the top of the inner wall of the housing (1) via a mounting column. The air pump (27) extracts gas from the capillary tube (22) and the suction tube (2) via the hose (26).

3. A viscosity detection device based on lubricating oil production according to claim 2, characterized in that: The detection component also includes: A toggle rod (36) has one end fixed to the bottom of the air pump (27) and the other end located below the control switch (35) for changing the state of the control switch (35).

4. A viscosity detection device based on lubricating oil production according to claim 1, characterized in that: The switching component includes: A push rod (4), one end of which is fixed to the side wall of the guide block (21), and the other end of which is provided with an inclined surface; A power slide bar (41) is also provided with an inclined surface at one end thereof and is slidably adapted to the inclined surface of the push rod (4), and a support plate (43) is slidably penetrated at the other end thereof, and a spring (42) is fixed between the inner wall of the support plate (43) and the power slide bar (41) to reset the power slide bar (41); A fixed claw (431) is fixed to one end of the support plate (43) to provide support for the material storage cup (47); The stopper (45) is slidably disposed in the support plate (43) to limit the position of the material storage cup (47), and a second spring (46) capable of returning the stopper (45) to its original position is fixed between the side wall of the stopper (45) and the support plate (43).

5. A viscosity detection device based on lubricating oil production according to claim 4, characterized in that: The switching component also includes: A sliding rope (44) is slidably inserted into the support plate (43) and the fixing claw (431), one end of which is fixed to the side wall of the stopper (45), and the other end of which is fixed to the side wall of the power slide bar (41), so that the power slide bar (41) can pull the stopper (45) to slide through the sliding rope (44); The rotating ring (48) is movably sleeved on the support column (13) via a bearing to provide support for the support plate (43), and a gear ring (49) is fixed on the top of the rotating ring (48).

6. A viscosity detection device based on lubricating oil production according to claim 5, characterized in that: The switching component also includes: Gear 1 (410) meshes with the gear ring (49) so that the gear ring (49) can rotate synchronously with gear 1 (410); A rotating shaft (411) has one end fixed to the top of gear one (410) for transmission, and a power motor (412) fixed to the other end, so that the power motor (412) can drive gear one (410) to rotate via the rotating shaft (411), and the power motor (412) is fixed in the housing (1) via a mounting plate.

7. A viscosity detection device based on lubricating oil production according to claim 1, characterized in that: The removal component includes: A driving motor (5) is mounted on the base (11) via a motor seat to drive the removal component to operate, wherein the output end of the driving motor (5) is connected to a movable shaft (51) for transmission; A second gear (52) is fixed to one end of the movable shaft (51) and is used to assist the removal of the assembly, and a rack (53) is meshed on the second gear (52); A striking rod (54), the bottom of which is fixed to the top of the rack (53) to assist the removal of the assembly; The guide rail (55) is fixed to the base (11) via support legs to provide support for the impact rod (54), and one end of the impact rod (54) is slidably disposed on the guide rail (55).

8. A viscosity detection device based on lubricating oil production according to claim 7, characterized in that: The removal component also includes: A material removal rod (57) is located in the material storage cup (47) and is used to cut off the lubricating oil connected between the material suction pipe (2) and the material storage cup (47) during detection; The turning shaft (58) has two ends movably mounted in the material storage cup (47) through bearings to provide support for the material moving rod (57); The driven rod (56) has one end fixed on the side wall of the material-moving rod (57) and the other end located between the impact rods (54) for turning the material-moving rod (57) under the drive of the impact rod (54).

9. A detection method for a viscosity detection device based on lubricating oil production according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, placing a storage cup (47) containing the lubricating oil to be tested on the switching component, and operating the switching component through a control panel to switch the storage cup (47) to the testing position; S2. The detection component is operated by controlling the control panel so that the suction tube (2) extends into the storage cup (47) to absorb the lubricating oil in the storage cup (47) into the capillary tube (22). The storage cup (47) is weighed by the support plate (12) before and during the absorption process; S3, after the lubricating oil is absorbed, the suction tube (2) is removed from the storage cup (47), and the weight of the capillary tube (22), the guide block (21), and the suction tube (2) after the lubricating oil is absorbed is detected by the tension sensor (24), and the storage cup (47) and the remaining sample are weighed by the support plate (12); S4, controlling the detection component to operate through the control panel, allowing the lubricating oil in the capillary tube (22) to flow back into the storage cup (47) under the action of gravity; S5. The viscosity of the lubricating oil is calculated using the Hagen-Poiseuille equation by real-time detection of the weight of the storage cup (47) and the capillary tube (22) from which the lubricating oil is flowing, the guide block (21), and the suction tube (2).

10. A detection method for a viscosity detection device based on lubricating oil production according to claim 9, characterized in that: A pressure sensor for measuring the air pressure in the capillary (22) is installed in the capillary (22), and the tension sensor (24) detects the weight 2-4 seconds after the electric push rod (25) stops moving.

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