Oil density meter

Abstract

This invention provides an oil density detector, belonging to the field of oil detection technology, to solve the problem of difficult internal cleaning of oil density detectors. The oil density detector provided by this invention includes a detection cylinder, a stirring assembly, a detection component, a cleaning assembly, and a drive assembly. The detection cylinder is used to hold the test sample. The stirring assembly includes a rotating sleeve and a stirring mechanism. The detection component includes a lifting mechanism and a detection head. The cleaning assembly includes a hollow rotating rod and a liquid distributor. The drive assembly includes a motor and a transmission mechanism. The motor drives the rotating sleeve and the hollow rotating rod to reciprocate through the transmission mechanism, which in turn drives the lifting mechanism to reciprocate. The oil density detector provided by this invention can both detect oil density in real time and clean any remaining impurities after the test.

Description

Technical Field

[0001] This utility model belongs to the field of oil detection technology, specifically relating to an oil density detector. Background Technology

[0002] In industrial production, the density of fluids such as lubricating oil and fuel oil has a significant impact on the normal operation of equipment and the safety of industrial production. Therefore, testing the density of fluids is of great importance. Traditional fluid density testers are prone to leaving impurities inside after use. These impurities are difficult to clean and can adversely affect subsequent use, even affecting the accuracy of the test. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide an oil density detector that can both detect the oil density in real time and clean the internal impurities after the detection is completed.

[0004] To address the aforementioned problems, this utility model provides an oil density analyzer, comprising: a detection cylinder, a stirring assembly, a detection component, a cleaning assembly, and a driving assembly. The detection cylinder is used to hold the test sample. A detection hole is provided at the top of the detection cylinder. The stirring assembly includes a rotating sleeve and a stirring mechanism. The rotating sleeve extends through the top of the detection cylinder into the cylinder. The stirring mechanism is located within the detection cylinder. The stirring mechanism is connected to the rotating sleeve and rotates with it. The detection assembly includes a lifting mechanism and a detection head. The lifting mechanism is mounted on the detection cylinder. The detection head is mounted on the lifting mechanism and is located above the detection hole. The lifting mechanism drives the detection head to rise and fall, allowing it to extend into the detection hole to test the sample. The cleaning assembly includes a hollow rotating rod and a liquid distributor. The hollow rotating rod extends into the detection cylinder through the rotating sleeve. The liquid distributor is located within the detection cylinder. The liquid distributor is connected to the hollow rotating rod and rotates with it. The liquid distributor has multiple high-pressure nozzles. The hollow rotating rod is connected to a cleaning water pump via a rotary joint. The drive assembly includes a motor and a transmission mechanism. The motor drives the rotating sleeve and hollow rotating rod to rotate reciprocally through the transmission mechanism, thereby driving the lifting mechanism to move up and down reciprocally.

[0005] The stirring mechanism includes a stirring frame and multiple stirring rods. The stirring frame is a square frame with an opening at the top. The stirring frame is connected to the outer walls of opposite sides of the rotating sleeve through the opening. The outer contour of the stirring frame conforms to the inner wall of the detection cylinder. The stirring rods are spaced apart on the vertical section of the stirring frame. The stirring rods extend inward toward the stirring frame and are inclined toward the bottom of the detection cylinder.

[0006] The lifting mechanism includes a guide rod, a top plate, a lead screw, and a lifting plate. The guide rod is mounted on the detection cylinder. The top plate is positioned on top of the guide rod. The lead screw is rotatably mounted between the top plate and the top of the detection cylinder. The lifting plate is vertically mounted on the guide rod and connected to the lead screw via a threaded connection. The detection head is located at the bottom of the lifting plate. A motor drives the lead screw to reciprocate through a transmission mechanism, which in turn drives the lifting plate to rise and fall, allowing the detection head to reciprocate into the detection hole for testing the sample.

[0007] The transmission mechanism includes: a mounting frame, a first worm, a second worm, a first worm wheel, and a second worm wheel. The mounting frame is located on top of the detection cylinder. The first worm is rotatably mounted on the mounting frame. One end of the first worm is connected to a motor. The other end of the first worm is equipped with a first gear. The second worm is rotatably mounted on the mounting frame and located above the first worm. The end of the second worm is equipped with a second gear. The second gear meshes with the first gear for transmission. The first worm wheel is mounted on a rotating sleeve. The first worm wheel meshes with the first worm for transmission. The second worm wheel is mounted on a hollow rotating rod. The second worm wheel meshes with the second worm for transmission.

[0008] The lifting mechanism is equipped with a third gear. The third gear meshes with the first gear for transmission.

[0009] The oil density analyzer also includes an outer sheath and a heating mechanism. The outer sheath comprises a cylinder body and support legs. The support legs are located at the bottom of the cylinder body. The cylinder body houses the detection cylinder. The heating mechanism is located within the cylinder body and is used to heat the detection cylinder.

[0010] The heating mechanism includes a spiral heating rod, a temperature sensor, and a temperature controller. The spiral heating rod is positioned between the inner wall of the cylinder and the outer wall of the detection cylinder. The temperature sensor is located inside the detection cylinder. The temperature controller is connected to both the spiral heating rod and the temperature sensor.

[0011] The oil density detector also includes a controller. The controller is connected to the stirring assembly, the detection assembly, the cleaning assembly, and the drive assembly.

[0012] The cleaning assembly also includes a connecting pipe. One end of the connecting pipe is connected to the cleaning water pump. The other end of the connecting pipe is connected to the hollow rotating rod via a swivel joint.

[0013] The detection cylinder has a feed inlet at the top and a discharge outlet at the bottom.

[0014] Beneficial effects:

[0015] The oil density detector provided by this utility model is used by first pouring the test sample into the test cylinder, then starting the motor. The motor drives the rotating sleeve and hollow rotating rod to rotate reciprocally through the transmission mechanism, and simultaneously drives the lifting mechanism to move up and down. The rotating sleeve drives the stirring mechanism to rotate reciprocally to stir the test sample. Although the liquid distributor rotates reciprocally with the hollow rotating rod, the cleaning water pump is not started at this time, so cleaning water will not be mixed into the test sample. Moreover, the reciprocating rotation of the liquid distributor with the hollow rotating rod can stir the middle part of the test sample, which compensates for the lack of stirring effect in the middle part of the test sample by the stirring mechanism. The lifting mechanism drives the detection head to move up and down regularly, so that the detection head extends into the detection hole at equal intervals to detect the test sample in the test cylinder in real time. After the test is completed, the test sample in the test cylinder is discharged, and then the cleaning water pump is started. The cleaning water pump drives the cleaning water through the hollow rotating rod into the liquid distributor, and then sprays it onto the coal wall of the test cylinder through the high-pressure nozzle on the liquid distributor. At this time, because the motor drives the rotating sleeve and hollow rotating rod to reciprocate through the transmission mechanism, and also drives the lifting mechanism to reciprocate, the liquid distributor can reciprocate with the hollow rotating rod, spraying the cleaning water evenly onto the inner wall of the detection cylinder to clean the inner wall of the detection cylinder; the rotating sleeve drives the stirring mechanism to reciprocate, to stir the cleaning water in the detection cylinder, further improving the cleaning effect; the lifting mechanism drives the detection head to reciprocate regularly, to monitor the density change of the cleaning water, and thus monitor the cleaning effect. The oil density detector provided by this utility model can not only detect the oil density in real time, but also clean the internal impurities after the detection is completed. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of an oil density detector according to an embodiment of the present invention, in a first direction;

[0017] Figure 2 A three-dimensional structural diagram of an oil density detector according to an embodiment of the present invention, in a second direction;

[0018] Figure 3 A schematic diagram of the internal structure of an oil density detector according to an embodiment of this utility model;

[0019] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Detection cylinder; 2. Stirring assembly; 3. Detection assembly; 4. Cleaning assembly; 5. Drive assembly; 6. Outer protective sleeve; 7. Heating mechanism; 8. Controller; 9. Cleaning water pump;

[0022] 11. Inspection hole; 12. Feed inlet; 13. Discharge outlet;

[0023] 21. Rotating sleeve; 22. Stirring mechanism;

[0024] 31. Lifting mechanism; 32. Detection head;

[0025] 41. Hollow rotating rod; 42. Liquid distributor; 43. High-pressure nozzle; 44. Connecting pipe; 45. Rotary joint;

[0026] 51. Electric motor; 52. Transmission mechanism;

[0027] 61. Cylinder body; 62. Support legs;

[0028] 71. Spiral heating rod; 72. Temperature sensor; 73. Temperature controller;

[0029] 221. Stirring rack; 222. Stirring rod;

[0030] 311. Guide rod; 312. Top plate; 313. Lead screw; 314. Lifting plate;

[0031] 521. Mounting bracket; 522. First worm gear; 523. Second worm gear; 524. First worm wheel; 525. Second worm wheel; 526. First gear; 527. Second gear; 528. Third gear. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] This embodiment provides an oil density detector. Figure 1 This is a three-dimensional structural diagram of an oil density detector provided in this embodiment, showing its structure in the first direction. Figure 2 This is a three-dimensional structural diagram of an oil density detector provided in this embodiment, showing its structure in a second direction. Figure 3 This is a schematic diagram of the internal structure of an oil density detector provided in this embodiment. Figure 4 for Figure 3 A magnified view of a portion of the image.

[0037] like Figures 1-4 As shown, the oil density detector of this embodiment includes: a detection cylinder 1, a stirring assembly 2, a detection assembly 3, a cleaning assembly 4, and a driving assembly 5. The detection cylinder 1 is used to hold the test sample. A detection hole 11 is provided at the top of the detection cylinder 1. The stirring assembly 2 includes a rotating sleeve 21 and a stirring mechanism 22. The rotating sleeve 21 extends through the top of the detection cylinder 1 into the detection cylinder 1. The stirring mechanism 22 is located in the detection cylinder 1. The stirring mechanism 22 is connected to the rotating sleeve 21 and rotates with the rotating sleeve 21. The detection assembly 3 includes a lifting mechanism 31 and a detection head 32. The lifting mechanism 31 is disposed on the detection cylinder 1. The detection head 32 is disposed on the lifting mechanism 31 and is located above the detection hole 11. The lifting mechanism 31 is used to drive the detection head 32 to rise and fall, allowing the detection head 32 to extend into the detection hole 11 to test the sample. The cleaning assembly 4 includes a hollow rotating rod 41 and a liquid distributor 42. The hollow rotating rod 41 extends into the detection cylinder 1 through the rotating sleeve 21. A liquid distributor 42 is disposed in the detection cylinder 1. The liquid distributor 42 is connected to the hollow rotating rod 41 and rotates with the hollow rotating rod 41. The liquid distributor 42 is provided with multiple high-pressure nozzles 43. The hollow rotating rod 41 is connected to the cleaning water pump 9 through a rotary joint 45. The drive assembly 5 includes a motor 51 and a transmission mechanism 52. The motor 51 drives the rotating sleeve 21 and the hollow rotating rod 41 to reciprocate through the transmission mechanism 52, thereby driving the lifting mechanism 31 to reciprocate up and down.

[0038] The motor 51 in this embodiment can be a DC motor or a servo motor. When using a DC motor, the rotation direction of the motor 51 is changed by alternating the polarity of the DC voltage across the motor terminals, thus achieving alternating forward and reverse rotation. When using a servo motor, the direction of rotation of the servo motor is controlled by sending commands from a servo controller, thereby achieving alternating forward and reverse rotation of the motor 51.

[0039] In this embodiment, when using the oil density detector, the sample is first poured into the detection cylinder 1. Then, the motor 51 is started. The motor 51 drives the rotating sleeve 21 and the hollow rotating rod 41 to rotate back and forth through the transmission mechanism 52, and also drives the lifting mechanism 31 to move up and down back and forth. The rotating sleeve 21 drives the stirring mechanism 22 to rotate back and forth to stir the sample. Although the liquid distributor 42 rotates back and forth with the hollow rotating rod 41, the cleaning water pump 9 is not started at this time, so the cleaning water will not be mixed into the sample. Moreover, the liquid distributor 42 can stir the middle part of the sample by rotating back and forth with the hollow rotating rod 41, which makes up for the problem that the stirring mechanism 22 does not stir the middle part of the sample. The lifting mechanism 31 drives the detection head 32 to move up and down regularly, so that the detection head 32 extends into the detection hole 11 at equal intervals to detect the sample in the detection cylinder 1 in real time.

[0040] After the test is completed, the test sample in the test cylinder 1 is discharged. Then, the cleaning water pump 9 is started. The cleaning water pump 9 drives the cleaning water through the hollow rotating rod 41 into the liquid distributor 42, and then sprays it onto the inner wall of the test cylinder 1 through the high-pressure nozzle 43 on the liquid distributor 42. At this time, because the motor 51 drives the rotating sleeve 21 and the hollow rotating rod 41 to rotate back and forth through the transmission mechanism 52, and drives the lifting mechanism 31 to move up and down back and forth, the liquid distributor 42 can rotate back and forth with the hollow rotating rod 41, spraying the cleaning water evenly onto the inner wall of the test cylinder 1 to clean the inner wall of the test cylinder 1. The rotating sleeve 21 drives the stirring mechanism 22 to rotate back and forth to stir the cleaning water in the test cylinder 1, further improving the cleaning effect. The lifting mechanism 31 drives the test head 32 to move up and down regularly to monitor the density change of the cleaning water, and thus monitor the cleaning effect. After multiple rounds of rinsing and water injection, if the density of the cleaning water in the test cylinder 1 is close to its original density, it means that the cleaning effect has met the standard.

[0041] The oil density detector in this embodiment can both detect the oil density in real time and clean any remaining impurities after the test.

[0042] Among them, such as Figure 3As shown, the stirring mechanism 22 includes a stirring frame 221 and multiple stirring rods 222. The stirring frame 221 is a square frame. An opening is provided at the top of the stirring frame 221. The stirring frame 221 is connected to the outer walls of opposite sides of the rotating sleeve 21 through the opening. The outer contour of the stirring frame 221 conforms to the inner wall of the detection cylinder 1. The stirring rods 222 are spaced apart on the vertical section of the stirring frame 221. The stirring rods 222 extend inwards towards the stirring frame 221 and are inclined towards the bottom of the detection cylinder 1.

[0043] In this embodiment, the stirring frame 221 and the multiple stirring rods 222 are integrally formed to ensure the structural strength of the stirring mechanism 22. It should be noted that in other embodiments, the stirring frame 221 and the multiple stirring rods 222 can also be connected together by welding.

[0044] In this embodiment, the stirring mechanism 22 uses the cooperation of the stirring frame 221 and the stirring rod 222 to stir the test sample, which can stir the test sample more evenly, so that the test sample can flow fully and be heated evenly.

[0045] Among them, such as Figure 1 , 2 As shown in Figure 4, the lifting mechanism 31 includes: a guide rod 311, a top plate 312, a lead screw 313, and a lifting plate 314. The guide rod 311 is mounted on the detection cylinder 1. The top plate 312 is mounted on top of the guide rod 311. The lead screw 313 is rotatably mounted between the top plate 312 and the top of the detection cylinder 1. The lifting plate 314 is mounted on the guide rod 311 and is connected to the lead screw 313 via a threaded connection. The detection head 32 is mounted at the bottom of the lifting plate 314. The motor 51 drives the lead screw 313 to reciprocate through the transmission mechanism 52, thereby driving the lifting plate 314 to rise and fall, allowing the detection head 32 to reciprocate into the detection hole 11 for testing the sample.

[0046] The detection head 32 in this embodiment can be a conventional densitometer, which determines the oil density based on Archimedes' principle by utilizing the immersion depth of the densitometer in the oil. Alternatively, a vibrating tube densitometer can be used, measuring density by utilizing the relationship between the natural frequency of the vibrating tube and the density of the medium inside the tube. Another option is an isotope densitometer, measuring density by utilizing the relationship between the attenuation of radiation emitted by a radioactive isotope in the oil and the oil density. A radiation densitometer can also be used, measuring density by utilizing the attenuation characteristics of X-rays or other radiation in the oil. This embodiment does not impose further limitations on these methods.

[0047] It should be noted that the rotation speed and cycle of the motor 51 in this embodiment can be set according to actual usage requirements, and this embodiment does not impose too many restrictions on this.

[0048] In this embodiment, the motor 51 drives the lead screw 313 to reciprocate through the transmission mechanism 52, which in turn drives the lifting plate 314 to reciprocate up and down along the guide rod 311. The detection head 314, installed at the bottom of the lifting plate 314, reciprocates up and down with the lifting plate 314. When the lifting plate 314 descends, the detection head 32 extends into the test sample in the test cylinder 1 to obtain the density of the test sample; when the lifting plate 314 rises, it can drive the detection head 32 to rise, so as to avoid interference between the detection probe 32 and the stirring mechanism 22.

[0049] Among them, such as Figure 1 , 2 As shown in Figure 4, the transmission mechanism 52 includes: a mounting frame 521, a first worm 522, a second worm 523, a first worm wheel 524, and a second worm wheel 525. The mounting frame 521 is disposed on the top of the detection cylinder 1. The first worm 522 is rotatably mounted on the mounting frame 521. One end of the first worm 522 is connected to the motor 51. The other end of the first worm 522 is provided with a first gear 526. The second worm 523 is rotatably mounted on the mounting frame 521 and located above the first worm 522. The end of the second worm 523 is provided with a second gear 527. The second gear 527 meshes with the first gear 526 for transmission. The first worm wheel 524 is disposed on the rotating sleeve 21. The first worm wheel 524 meshes with the first worm 522 for transmission. The second worm wheel 525 is disposed on the hollow rotating rod 41. The second worm wheel 525 meshes with the second worm 523 for transmission.

[0050] In this embodiment, the first worm gear 522 and the second worm gear 523 rotate in opposite directions. Therefore, the stirring mechanism 22 and the liquid distributor 42 rotate in opposite directions, which is beneficial to improving the stirring effect on the test sample and the cleaning effect on the test cylinder.

[0051] In this embodiment, the motor 51 drives the first worm gear 522 to rotate, which in turn drives the first worm wheel 524 to rotate, thereby driving the rotating sleeve 21 to rotate. The rotating sleeve 21 can drive the stirring mechanism 22 to rotate synchronously, so as to stir the test sample in the test cylinder 1. The first worm gear 522 also drives the second worm gear 523 to rotate through the transmission between the first gear 526 and the second gear 527. The second worm gear 523 drives the hollow rotating rod 41 to rotate through the second worm wheel 525, thereby driving the liquid distributor 42 to rotate. In this embodiment, the transmission mechanism 52 realizes a single power input and multiple power outputs, with a compact structure and energy saving.

[0052] Among them, such as Figure 1 , 2 As shown in Figure 4, the lifting mechanism 31 is equipped with a third gear 528. The third gear 528 meshes with the first gear 526 for transmission.

[0053] In this embodiment, the first gear 526, the second gear 527, and the third gear 528 are all bevel gears. The first gear 526 and the second gear 527 are complementary meshing (i.e., the axes of the first gear 526 and the second gear 527 are parallel, and the minor diameter ends of the first gear and the second gear face the same direction), so that the first gear 526 and the second gear 527 mesh and transmit power on the same plane; the first gear 526 and the third gear 528 are symmetrically meshing (i.e., the axes of the first gear 526 and the third gear 528 are perpendicular, and the minor diameter ends of the first gear 526 and the second gear 528 are close to each other), so that the transmission planes of the first gear 526 and the third gear 528 form a 90-degree angle.

[0054] In this embodiment, the motor 51 drives the lead screw 313 to rotate through the transmission between the first gear 526 and the third gear 528, which in turn drives the lifting plate 314 to reciprocate up and down along the guide rod 311, so that the detection head 32 can perform real-time detection on the test sample at equal intervals.

[0055] Among them, such as Figures 1-3 As shown, the oil density detector also includes an outer sheath 6 and a heating mechanism 7. The outer sheath 6 includes a cylinder 61 and a support leg 62. The support leg 62 is located at the bottom of the cylinder 61. The cylinder 61 is used to house the detection cylinder 1. The heating mechanism 7 is located in the cylinder 61 and is used to heat the detection cylinder 1.

[0056] In this embodiment, the outer sheath 6 can support and protect the detection cylinder 1, and the heating mechanism 7 can heat the detection cylinder 1, thereby increasing the temperature of the sample being tested.

[0057] Among them, such as Figure 3 As shown, the heating mechanism 7 includes a spiral heating rod 71, a temperature sensor 72, and a temperature controller 73. The spiral heating rod 71 is disposed between the inner wall of the cylinder 61 and the outer wall of the detection cylinder 1. The temperature sensor 72 is disposed in the detection cylinder 1. The temperature controller 73 is connected to both the spiral heating rod 71 and the temperature sensor 72.

[0058] In this embodiment, the temperature sensor 72 and the temperature controller 73 transmit signals wirelessly.

[0059] This embodiment utilizes a spiral heating rod 71 surrounding the outer circumference of the detection cylinder 1 to heat the cylinder 1, enabling more uniform heating. The temperature controller 73 acquires the temperature of the sample in real time via the temperature sensor 72 and controls the heating power of the spiral heating rod 71 to achieve constant temperature.

[0060] Among them, such as Figures 1-3 As shown, the oil density detector also includes a controller 8. The controller 8 is connected to the stirring assembly 2, the detection assembly 3, the cleaning assembly 4, and the drive assembly 5.

[0061] The controller 8 in this embodiment is also connected to the heating mechanism 7. The controller 8 can obtain the working status of the stirring component 2, the detection component 3, and the cleaning component 4, and realize the automatic control of the drive component 5 and the heating mechanism 7. It is convenient and quick to use and has a high degree of automation.

[0062] Among them, such as Figures 1-2 As shown, the cleaning assembly 4 also includes a connecting pipe 44. One end of the connecting pipe 44 is connected to the cleaning water pump 9. The other end of the connecting pipe 44 is connected to the hollow rotating rod 41 via a rotary joint 45.

[0063] In this embodiment, a connecting pipe 44 is used to connect the hollow rotating rod 41 and the cleaning water pump 9, making the spatial layout of the upper part of the oil density detector more reasonable.

[0064] Among them, such as Figure 3 As shown, the top of the detection cylinder 1 is provided with a feed inlet 12. The bottom of the detection cylinder 1 is provided with a discharge outlet 13.

[0065] In this embodiment, a feed inlet 12 is provided at the top of the detection cylinder 1 and a discharge outlet 13 is provided at the bottom, so that the test sample and cleaning water can be injected and discharged under their own gravity, thus saving energy.

[0066] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An oil liquid density detector characterized by, include: Detection cylinder, stirring assembly, detection assembly, cleaning assembly, and drive assembly; The detection cylinder is used to hold the detection sample; The top of the detection cylinder is provided with a detection hole; The stirring assembly includes a rotating sleeve and a stirring mechanism; the rotating sleeve extends from the top of the detection cylinder into the detection cylinder; the stirring mechanism is located in the detection cylinder; the stirring mechanism is connected to the rotating sleeve and rotates with the rotating sleeve; The detection assembly includes a lifting mechanism and a detection head; the lifting mechanism is disposed on the detection cylinder; the detection head is disposed on the lifting mechanism and is located above the detection hole; the lifting mechanism is used to drive the detection head to move up and down, so that the detection head can extend into the detection hole to detect the sample; The cleaning assembly includes a hollow rotary rod and a liquid dispenser; The hollow rotating rod extends into the detection cylinder through the rotating sleeve; The liquid dispenser is disposed in the detection cylinder; The liquid distributor is connected to the hollow rotating rod and rotates with the hollow rotating rod; the liquid distributor is equipped with multiple high-pressure nozzles; the hollow rotating rod is connected to the cleaning water pump through a rotary joint; The drive assembly includes a motor and a transmission mechanism; the motor drives the rotating sleeve and the hollow rotating rod to reciprocate through the transmission mechanism, thereby driving the lifting mechanism to reciprocate up and down.

2. The oil quality monitor of claim 1 wherein, The stirring mechanism includes a stirring frame and multiple stirring rods; The stirring rack is a square frame; the top of the stirring rack is provided with an opening; the stirring rack is connected to the outer walls of opposite sides of the rotating sleeve through the opening; the outer contour of the stirring rack is adapted to the inner wall of the detection cylinder. The stirring rods are spaced apart on the vertical section of the stirring frame; the stirring rods extend inward toward the stirring frame; and the stirring rods are inclined toward the bottom of the detection cylinder.

3. The oil quality monitor of claim 1 wherein, The lifting mechanism includes: a guide rod, a top plate, a lead screw, and a lifting plate; The guide rod is disposed on the detection cylinder; The top plate is disposed at the top of the guide rod; The lead screw is rotatably disposed between the top plate and the top of the detection cylinder; The lifting plate is vertically and flexibly mounted on the guide rod; and the lifting plate is connected to the lead screw via a threaded connection. The detection head is located at the bottom of the lifting plate; the motor drives the lead screw to rotate reciprocally through the transmission mechanism, thereby driving the lifting plate to rise and fall, so that the detection head can reciprocate into the detection hole to detect the sample.

4. The oil quality monitor of claim 1 wherein, The transmission mechanism includes: a mounting bracket, a first worm, a second worm, a first worm wheel, and a second worm wheel; The mounting bracket is disposed on the top of the detection cylinder; The first worm gear is rotatably mounted on the mounting bracket; one end of the first worm gear is connected to the motor; the other end of the first worm gear is provided with a first gear. The second worm is rotatably mounted on the mounting bracket and located above the first worm; the end of the second worm is provided with a second gear; the second gear meshes with the first gear for transmission. The first worm gear is mounted on the rotating sleeve; the first worm gear meshes with the first worm for transmission. The second worm gear is mounted on the hollow rotating rod; the second worm gear meshes with the second worm for transmission.

5. The oil density detector according to claim 4, characterized in that, The lifting mechanism is equipped with a third gear; the third gear meshes with the first gear for transmission.

6. The oil density detector according to claim 1, characterized in that, Also includes: Outer sleeve and heating mechanism; The outer sheath includes a cylindrical body and supporting legs; the supporting legs are disposed at the bottom of the cylindrical body; the cylindrical body is used to accommodate the detection cylinder. The heating mechanism is disposed in the cylinder and is used to heat the detection cylinder.

7. The oil density detector according to claim 6, characterized in that, The heating mechanism includes: a spiral heating rod, a temperature sensor, and a temperature controller; The spiral heating rod is disposed between the inner wall of the cylinder and the outer wall of the detection cylinder; The temperature sensor is disposed in the detection cylinder; The temperature controller is connected to both the spiral heating rod and the temperature sensor.

8. The oil density detector according to claim 1, characterized in that, It also includes the controller; The controller is connected to the stirring assembly, the detection assembly, the cleaning assembly, and the drive assembly, respectively.

9. The oil density detector according to claim 1, characterized in that, The cleaning assembly also includes a connecting pipe; One end of the connecting pipe is connected to the cleaning water pump; the other end of the connecting pipe is connected to the hollow rotating rod through the rotary joint.

10. The oil density detector according to claim 1, characterized in that, The top of the detection cylinder is provided with a feed inlet; the bottom of the detection cylinder is provided with a discharge outlet.

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