A sampling device for lubricating oil processing

Abstract

The utility model discloses a kind of sampling equipment for lubricating oil processing, the utility model relates to lubricating oil sampling technical field, including horizontal plate, the top surface of horizontal plate is set lifting assembly, the top surface of horizontal plate is set up and is passed through sampling assembly in through slot, sampling assembly is movably connected with horizontal plate by limiting component, anti-backflow component is set in sampling assembly, the both sides of horizontal plate bottom surface are set fixed component. Up and down movement of sampling assembly can be driven by lifting assembly, so that sampling assembly can sample lubricating oil of different depths, improve detection accuracy to some extent;Sampling assembly can realize sampling of lubricating oil, lubricating oil of different depths can be stored separately, so that lubricating oil of different depths can be detected separately, lubricating oil of different depths can also be poured together after mixing and detected, and each collection cavity can be separated, which can facilitate cleaning of its interior.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil sampling technology, specifically to a sampling device for lubricating oil processing. Background Technology

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. Its main functions include lubrication, auxiliary cooling, rust prevention, cleaning, sealing, and buffering. During the lubricating oil production process, effective sampling and multi-faceted testing are required to ensure the oil meets sales standards before it can be officially bottled and sold. Therefore, quality testing of lubricating oil is a crucial step, guaranteeing its quality and preventing problems from arising during actual use that could harm consumer rights.

[0003] During the production and processing of lubricating oil, it is necessary to sample and test it. Traditional lubricating oil sampling usually requires manual sampling, and the sampling location is usually at the top. This sampling is not complete enough, resulting in the subsequent measurement data being unrepresentative and insufficient to describe the overall quality of the lubricating oil. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for lubricating oil processing to address the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for lubricating oil processing, comprising a horizontal plate, a lifting component provided on the top surface of the horizontal plate, a through groove opened on the top surface of the horizontal plate, a sampling component passing through the through groove, the sampling component and the horizontal plate being movably connected by a limiting component, an anti-backflow component provided inside the sampling component, and fixing components provided on both sides of the bottom surface of the horizontal plate.

[0006] As described above, a sampling device for lubricating oil processing includes a lifting assembly comprising a connecting plate, a lifting motor, and a moving plate. Connecting plates are provided on both sides of the moving plate. The connecting plates are fixedly installed on the top surface of a horizontal plate. A placement groove is opened on one side of the connecting plate. A lifting motor is fixedly installed on the top surface of one of the connecting plates. The output shaft of the lifting motor passes through the top of the connecting plate and is rotatably connected to it. A lead screw is rotatably installed in one of the placement grooves. The upper end of the lead screw is fixedly connected to the output shaft of the lifting motor. A threaded sleeve is threaded onto the lead screw. A vertical rod is fixedly installed in the other placement groove. A moving sleeve is slidably mounted on the vertical rod. The moving sleeve and the threaded sleeve are fixedly connected through a moving plate. A through hole is opened on the top surface of the moving plate. The upper end of the sampling assembly passes through the through hole and is movably connected to the through hole through a limiting assembly.

[0007] As described above, a sampling device for lubricating oil processing includes a sampling assembly comprising a collection chamber, a sampling tube, and a sampling pump. A connecting tube is fixedly connected to the top surface of the collection chamber, and a connector is fixedly installed on the bottom surface of the collection chamber. Adjacent connecting tubes are threadedly connected to the connector. The sampling tube is connected to the upper part of one side of the collection chamber. A sampling pump is installed at one end of the sampling tube. An anti-backflow assembly is installed inside the sampling tube. A scale is installed on the front surface of the collection chamber. A controller is fixedly installed on the front surface of the uppermost connecting tube, and the controller is electrically connected to the sampling pump.

[0008] As described above, a sampling device for lubricating oil processing includes an L-shaped rod, an arc-shaped limiting block, and a telescopic rod. A sealing head is threaded onto the uppermost connecting pipe. Arc-shaped limiting grooves are formed on both sides of the sealing head. The sealing head passes through a through hole and can move along the through hole. Grooves are formed on both sides of the through hole, and a telescopic rod is fixedly installed within each groove. Two strip-shaped grooves are formed on the top surface of the moving plate, communicating with the corresponding grooves. The L-shaped rod is slidably disposed within the grooves. The upper end of the L-shaped rod passes through the strip-shaped grooves and can move along them. An arc-shaped limiting block is fixedly installed at the lower end of the L-shaped rod, cooperating with the arc-shaped limiting grooves. A thrust spring is fitted onto the telescopic end of the telescopic rod. One end of the thrust spring is fixedly connected to the L-shaped rod, and the other end of the thrust spring is fixedly connected to the telescopic rod.

[0009] As described above, the sampling device for lubricating oil processing includes an anti-backflow assembly comprising a baffle, a baffle ring, and a sealing ring. The baffle ring is fixedly installed at the other end inside the sampling tube. The sealing ring is fixedly installed on one side of the baffle. Both the baffle and the sealing ring mate with one side of the baffle ring. A vertical plate is fixedly installed at one end inside the sampling tube. A horizontal bar is fixedly installed on the other side of the baffle. Several horizontal springs are fixedly installed on one side of the vertical plate. The horizontal springs are connected to the horizontal bar via connectors. Guide rods are fixedly installed on both the upper and lower sides of the horizontal bar. Guide grooves are opened on both the upper and lower sides inside the sampling tube. The ends of the guide rods are slidably disposed in the corresponding guide grooves.

[0010] As described above, a sampling device for lubricating oil processing includes a fixing plate, a clamping plate, and bolts. The fixing plates are fixedly installed on both sides of the bottom surface of the horizontal plate. A clamping plate is provided on one side of the fixing plate. A screw hole is opened on one side of the fixing plate, and a bolt is connected to the screw hole by an internal thread. The end of the bolt is rotatably connected to the corresponding clamping plate. A support rod is fixedly installed on the top surface of the clamping plate. Sliding grooves are opened on both sides of the bottom surface of the horizontal plate, and the upper end of the support rod is slidably disposed in the sliding groove.

[0011] As described above, a sampling device for lubricating oil processing includes a connecting component comprising a fixed block, a T-shaped rod, and a sleeve. Fixed blocks are fixedly installed on both the upper and lower sides inside the sampling tube. The adjacent surfaces of the two fixed blocks are inclined surfaces. A sleeve is provided between the two fixed blocks. A transverse spring and a crossbar are connected through the sleeve. One end of the T-shaped rod is slidably disposed within the sleeve. One end of the two T-shaped rods is fixedly connected by a vertical spring. A roller is rotatably installed at the other end of the T-shaped rod. A groove is formed on the inclined surface of the fixed block, and the roller is slidably disposed within the groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the lifting component can drive the sampling component to move up and down, thereby enabling the sampling component to sample lubricating oil at different depths, which improves the detection accuracy to a certain extent.

[0013] The sampling component enables the sampling of lubricating oil. Lubricating oil at different depths can be stored separately, allowing for individual testing of lubricating oil at different depths. Alternatively, lubricating oil at different depths can be mixed together for testing. Furthermore, each collection chamber can be separated, facilitating internal cleaning.

[0014] The limiting component enables the installation and removal of the sampling component, making the device more convenient to use.

[0015] The combined use of the anti-backflow component and the fixing component can prevent backflow of the sampling tube, thus avoiding the lubricating oil in the collection chamber from flowing back out through the sampling tube and affecting normal operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 An enlarged view of the anti-backflow component;

[0019] Figure 3 for Figure 1 A magnified view of a portion of the I;

[0020] Figure 4 for Figure 2 A magnified view of part II.

[0021] Reference numerals: 1-Horizontal plate, 2-Lifting assembly, 21-Connecting plate, 22-Lifting motor, 23-Moving plate, 24-Placement slot, 25-Lead screw, 26-Screw sleeve, 27-Vertical rod, 28-Moving sleeve, 29-Through hole, 3-Through groove, 4-Sampling assembly, 41-Collection chamber, 42-Sampling tube, 43-Sampling pump, 44-Connecting tube, 45-Connector, 46-Scale, 47-Controller, 5-Limiting assembly, 51-L-shaped rod, 52-Arc-shaped limit block, 53-Telescopic rod, 54-Sealing head, 55- Arc-shaped limiting groove, 56-thrust spring, 57-groove, 58-strip groove, 6-anti-backflow assembly, 61-stop block, 62-stop ring, 63-sealing ring, 64-vertical plate, 65-horizontal bar, 66-lateral spring, 67-guide rod, 68-guide groove, 7-fixing assembly, 71-fixing plate, 72-clamping plate, 73-bolt, 74-screw hole, 75-support rod, 76-slide groove, 8-connector, 81-fixing block, 82-T-shaped rod, 83-sleeve, 84-wheel groove, 85-vertical spring, 86-roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4As shown in the figure, this embodiment specifically discloses a sampling device for lubricating oil processing, including a horizontal plate 1. A lifting assembly 2 is provided on the top surface of the horizontal plate 1. The lifting assembly 2 includes a connecting plate 21, a lifting motor 22, and a moving plate 23. Connecting plates 21 are provided on both sides of the moving plate 23. The connecting plates 21 are fixedly installed on the top surface of the horizontal plate 1. A placement groove 24 is opened on one side of the connecting plate 21. The lifting motor 22 is fixedly installed on the top surface of one of the connecting plates 21. The output shaft of the lifting motor 22 passes through the top of the connecting plate 21 and is rotatably connected to the connecting plate 21. A lead screw 25 is rotatably installed in one of the placement grooves 24. The upper end of the lead screw 25 is fixedly connected to the output shaft of the lifting motor 22. A threaded sleeve 26 is threadedly connected to the lead screw 25. The other placement groove 24 is used for the sampling device. A vertical rod 27 is fixedly installed in the groove 24. A movable sleeve 28 is slidably mounted on the vertical rod 27. The movable sleeve 28 and the screw sleeve 26 are fixedly connected by a movable plate 23. A through hole 29 is opened on the top surface of the movable plate 23. The upper end of the sampling component 4 passes through the through hole 29 and is movably connected to the through hole 29 by a limiting component 5. When the lifting motor 22 is working, the output shaft of the lifting motor 22 can drive the lead screw 25 to rotate. The rotation of the lead screw 25 can drive the screw sleeve 26 to move up and down. The screw sleeve 26 can drive the movable plate 23 to move up and down. The movable plate 23 can drive the sampling component 4 to move up and down through the limiting component 5, so that the sampling component 4 can sample the lubricating oil. The movement of the movable sleeve 28 along the vertical rod 27 can guide the movable plate 23.

[0024] A through groove 3 is formed on the top surface of the horizontal plate 1, through which a sampling component 4 passes. The sampling component 4 includes a collection chamber 41, a sampling tube 42, and a sampling pump 43. A connecting tube 44 is fixedly connected to the top surface of the collection chamber 41, and a connector 45 is fixedly installed on the bottom surface of the collection chamber 41. Adjacent connecting tubes 44 are threadedly connected to the connector 45. The sampling tube 42 is connected to the upper part of one side of the collection chamber 41. A sampling pump 43 is installed at one end of the sampling tube 42. An anti-backflow component 6 is installed inside the sampling tube 42. A scale 46 is installed on the front surface of the collection chamber 41, and a scale 46 is fixedly installed on the front surface of the uppermost connecting tube 44. The controller 47 is electrically connected to the sampling pump 43. When the sampling pump 43 is working, it allows lubricating oil to enter the collection chamber 41 through the sampling tube 42, thereby enabling sampling of lubricating oil at different depths. The collection chamber 41 can be easily disassembled through the threaded connection between the connecting tube 44 and the connector 45, allowing the lubricating oil in the collection chamber 41 to be poured out and the collection chamber 41 to be cleaned for easy use next time. The lubricating oil at different depths can be tested individually or mixed before testing.

[0025] The sampling component 4 is movably connected to the horizontal plate 1 via a limiting component 5. The limiting component 5 includes an L-shaped rod 51, an arc-shaped limiting block 52, and a telescopic rod 53. The uppermost connecting pipe 44 is threadedly connected to a sealing head 54. Arc-shaped limiting grooves 55 are opened on both sides of the sealing head 54. The sealing head 54 passes through the through hole 29 and can move along the through hole 29. Grooves 57 are opened on both sides of the through hole 29. The telescopic rod 53 is fixedly installed in the grooves 57. Two strip grooves 58 are opened on the top surface of the moving plate 23. The strip grooves 58 communicate with the corresponding grooves 57. The L-shaped rod 51 is slidably set in the groove 57. The upper end of the L-shaped rod 51 passes through the strip groove 58 and can move along the strip groove 58. The lower end of the L-shaped rod 51 is fixedly installed with an arc-shaped limiting block 52. The L-shaped limiting block 52 cooperates with the arc-shaped limiting groove 55. The telescopic end of the telescopic rod 53 is fitted with a thrust spring 56. One end of the thrust spring 56 is fixedly connected to the L-shaped rod 51, and the other end of the thrust spring 56 is fixedly connected to the telescopic rod 53. The sealing head 54 is threadedly connected to the uppermost connecting pipe 44. The upper end of the sealing head 54 is inserted into the through hole 29. Under the action of the thrust spring 56, the L-shaped rod 51 pushes the arc-shaped limiting block 52 to cooperate with the arc-shaped limiting groove 55, which can limit the sealing head 54 and thus fix the sampling component 4. Pushing the L-shaped rod 51 causes the arc-shaped limiting block 52 to move away from the arc-shaped limiting groove 55, which can remove the sampling component 4 from the lifting component 2.

[0026] The sampling assembly 4 is equipped with an anti-backflow assembly 6, which includes a block 61, a retaining ring 62, and a sealing ring 63. The retaining ring 62 is fixedly installed at the other end inside the sampling tube 42. The sealing ring 63 is fixedly installed on one side of the block 61. The block 61 and the sealing ring 63 are both matched with one side of the retaining ring 62. A vertical plate 64 is fixedly installed at one end inside the sampling tube 42. A horizontal bar 65 is fixedly installed on the other side of the block 61. Several horizontal springs 66 are fixedly installed on one side of the vertical plate 64. The horizontal springs 66 are connected to the horizontal bar 65 through a connector 8. Guide rods 67 are fixedly installed on both the upper and lower sides of the horizontal bar 65. Guide grooves 68 are opened on both the upper and lower sides inside the sampling tube 42. The ends of the guide rods 67 are slidably set in the corresponding guide grooves 68.

[0027] Connector 8 includes a fixing block 81, a T-shaped rod 82, and a sleeve 83. Fixing blocks 81 are fixedly installed on both the upper and lower sides inside the sampling tube 42. The adjacent surfaces of the two fixing blocks 81 are inclined, and a sleeve 83 is provided between the two fixing blocks 81. A transverse spring 66 is connected to a crossbar 65 through the sleeve 83. One end of the T-shaped rod 82 is slidably disposed within the sleeve 83. One end of the two T-shaped rods 82 is fixedly connected by a vertical spring 85. A roller 86 is rotatably mounted on the other end of the T-shaped rod 82. A groove 84 is formed on the inclined surface of the fixing block 81, and the roller 86 is slidably disposed within the groove 84. During use, when lubricating oil flows through the inside of the sampling tube 42, when the pressure of the lubricating oil is greater than the elastic force of the vertical spring 85 and the transverse spring 66, the flow of lubricating oil causes the stop block 61 to move. The movement of the stop block 61 causes the sealing ring 63 to move, which in turn causes the crossbar 65 to move, which in turn causes the guide rod 67 to move. The guide rod 67 slides inside the guide groove 68. The movement of the crossbar 65 causes the sleeve 83 to move, which in turn compresses the transverse spring 66. The movement of the sleeve 83, through the T-shaped rod 82, causes the roller 86 to roll inside the wheel groove 84. The movement of the sleeve 83, by causing the roller 86 to roll inside the wheel groove 84, causes the T-shaped rod 82 to slide inside the sleeve 83. The sliding of the T-shaped rod 82 compresses the vertical spring 85. When the lubricating oil flow pressure is less than the elastic force of the vertical spring 85 and the transverse spring 66, the movement of the stop block 61 causes the sealing ring 63 to move and contact the retaining ring 62.

[0028] Fixing components 7 are provided on both sides of the bottom surface of the horizontal plate 1. The fixing components 7 include fixing plates 71, clamping plates 72 and bolts 73. Fixing plates 71 are fixedly installed on both sides of the bottom surface of the horizontal plate 1. A clamping plate 72 is provided on one side of the fixing plate 71. A screw hole 74 is opened on one side of the fixing plate 71. A bolt 73 is connected to the screw hole 74 with an internal thread. The end of the bolt 73 is rotatably connected to the corresponding clamping plate 72. A support rod 75 is fixedly installed on the top surface of the clamping plate 72. A sliding groove 76 is opened on both sides of the bottom surface of the horizontal plate 1. The upper end of the support rod 75 is slidably disposed in the sliding groove 76. When the device is placed above the lubricating oil storage tank, the bolt 73 is rotated. The bolt 73 pushes the clamping plate 72 to move, so that the clamping plate 72 contacts the lubricating oil storage tank, which can fix the device on the lubricating oil storage tank and facilitate the next operation. The movement of the support rod 75 along the sliding groove 76 can guide the clamping plate 72.

[0029] Working principle:

[0030] The device is placed above the lubricating oil storage tank. Rotating bolt 73 moves clamp 72, bringing it into contact with the lubricating oil storage tank and securing the device there. This facilitates further operation. Support rod 75 guides clamp 72 along slide groove 76. Lifting motor 22 operates, its output shaft driving screw 25 to rotate. Screw 25 moves screw sleeve 26 up and down, which in turn moves moving plate 23 up and down. Moving plate 23, via limiting component 5, moves sampling component 4 up and down, allowing it to sample the lubricating oil. The movable sleeve 28 moves along the vertical rod 27 to guide the movable plate 23. The sampling pump 43 operates, allowing lubricating oil to enter the collection chamber 41 through the sampling tube 42, thus enabling sampling of lubricating oil at different depths. The connecting tube 44 and the connecting head 45 are threaded together, facilitating disassembly of the collection chamber 41 to pour out the lubricating oil and clean it for future use. The lubricating oil at different depths can be tested individually or mixed before testing. During use, when lubricating oil flows through the sampling tube 42, the lubricating oil... When the pressure exceeds the elastic force of the vertical spring 85 and the horizontal spring 66, the lubricating oil flows, causing the stop block 61 to move. The movement of the stop block 61 causes the sealing ring 63 to move, which in turn causes the crossbar 65 to move. The movement of the crossbar 65 causes the guide rod 67 to move, which slides inside the guide groove 68. The movement of the crossbar 65 causes the sleeve 83 to move, which compresses the horizontal spring 66. The movement of the sleeve 83, through the T-shaped rod 82, causes the roller 86 to roll inside the wheel groove 84. The movement of the sleeve 83, by causing the roller 86 to roll inside the wheel groove 84, allows the T-shaped rod 82 to slide inside the sleeve 83. When the pressure of the lubricating oil flow is less than the elastic force of the vertical spring 85 and the horizontal spring 66, the stop block 61 moves, causing the sealing ring 63 to move and contact the retaining ring 62. The sealing head 54 is threadedly connected to the uppermost connecting pipe 44. The upper end of the sealing head 54 is inserted into the through hole 29. Under the action of the thrust spring 56, the L-shaped rod 51 pushes the arc-shaped limiting block 52 to cooperate with the arc-shaped limiting groove 55, which can limit the sealing head 54 and thus fix the sampling component 4. Pushing the L-shaped rod 51 causes the arc-shaped limiting block 52 to move away from the arc-shaped limiting groove 55, which can remove the sampling component 4 from the lifting component 2.

[0031] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and features of this application. Solutions or features that are prior art or common knowledge to those skilled in the art will not be described in detail in the above embodiments.

[0032] Furthermore, the technical solutions of this application are not limited to the above embodiments. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sampling device for lubricating oil processing, characterized in that: The system includes a horizontal plate (1), a lifting assembly (2) on the top surface of the horizontal plate (1), a through groove (3) on the top surface of the horizontal plate (1), a sampling assembly (4) passing through the through groove (3), the sampling assembly (4) and the horizontal plate (1) being movably connected by a limiting assembly (5), an anti-backflow assembly (6) being provided inside the sampling assembly (4), and fixing assemblies (7) being provided on both sides of the bottom surface of the horizontal plate (1).

2. The sampling device for lubricating oil processing according to claim 1, characterized in that: The lifting assembly (2) includes a connecting plate (21), a lifting motor (22), and a moving plate (23). Connecting plates (21) are provided on both sides of the moving plate (23). The connecting plates (21) are fixedly installed on the top surface of the horizontal plate (1). A placement slot (24) is provided on one side of the connecting plate (21). The lifting motor (22) is fixedly installed on the top surface of one of the connecting plates (21). The output shaft of the lifting motor (22) passes through the top of the connecting plate (21) and is rotatably connected to it. The lifting motor (22) is rotatably installed in one of the placement slots (24). A lead screw (25) is fixedly connected to the output shaft of a lifting motor (22) at its upper end. A threaded sleeve (26) is threaded onto the lead screw (25). A vertical rod (27) is fixedly installed in another placement slot (24). A movable sleeve (28) is slidably set on the vertical rod (27). The movable sleeve (28) and the threaded sleeve (26) are fixedly connected through a movable plate (23). A through hole (29) is opened on the top surface of the movable plate (23). The upper end of the sampling component (4) passes through the through hole (29) and is movably connected to the through hole (29) through a limiting component (5).

3. The sampling device for lubricating oil processing according to claim 1, characterized in that: The sampling assembly (4) includes a collection chamber (41), a sampling tube (42), and a sampling pump (43). The top surface of the collection chamber (41) is fixedly connected to a connecting tube (44), and the bottom surface of the collection chamber (41) is fixedly installed with a connector (45). The upper and lower adjacent connecting tubes (44) are threadedly connected to the connector (45). The upper side of one side of the collection chamber (41) is connected to the sampling tube (42). One end of the sampling tube (42) is equipped with a sampling pump (43). An anti-backflow assembly (6) is installed inside the sampling tube (42). A scale (46) is installed on the front surface of the collection chamber (41). A controller (47) is fixedly installed on the front surface of the uppermost connecting tube (44). The controller (47) is electrically connected to the sampling pump (43).

4. The sampling device for lubricating oil processing according to claim 1, characterized in that: The limiting component (5) includes an L-shaped rod (51), an arc-shaped limiting block (52), and a telescopic rod (53). The uppermost connecting pipe (44) is threadedly connected to a sealing head (54). Arc-shaped limiting grooves (55) are opened on both sides of the sealing head (54). The sealing head (54) passes through the through hole (29) and can move along the through hole (29). Grooves (57) are opened on both sides of the through hole (29). The telescopic rod (53) is fixedly installed in the grooves (57). Two strip grooves (58) are opened on the top surface of the moving plate (23). The strip grooves (58) correspond to the... The groove (57) is internally connected. The L-shaped rod (51) is slidably set in the groove (57). The upper end of the L-shaped rod (51) passes through the strip groove (58) and can move along the strip groove (58). The lower end of the L-shaped rod (51) is fixedly installed with an arc-shaped limiting block (52). The arc-shaped limiting block (52) cooperates with the arc-shaped limiting groove (55). The telescopic end of the telescopic rod (53) is fitted with a thrust spring (56). One end of the thrust spring (56) is fixedly connected to the L-shaped rod (51), and the other end of the thrust spring (56) is fixedly connected to the telescopic rod (53).

5. A sampling device for lubricating oil processing according to claim 1, characterized in that: The anti-backflow assembly (6) includes a stop block (61), a retaining ring (62), and a sealing ring (63). The retaining ring (62) is fixedly installed at the other end inside the sampling tube (42). The sealing ring (63) is fixedly installed on one side of the stop block (61). The stop block (61) and the sealing ring (63) are both matched with one side of the retaining ring (62). A vertical plate (64) is fixedly installed at one end inside the sampling tube (42). A horizontal bar (65) is fixedly installed on the other side of the stop block (61). Several horizontal springs (66) are fixedly installed on one side of the vertical plate (64). The horizontal springs (66) and the horizontal bar (65) are connected by a connector (8). Guide rods (67) are fixedly installed on both the upper and lower sides of the horizontal bar (65). Guide grooves (68) are opened on both the upper and lower sides inside the sampling tube (42). The ends of the guide rods (67) are slidably set in the corresponding guide grooves (68).

6. A sampling device for lubricating oil processing according to claim 1, characterized in that: The fixing component (7) includes a fixing plate (71), a clamping plate (72), and a bolt (73). The fixing plate (71) is fixedly installed on both sides of the bottom surface of the horizontal plate (1). The clamping plate (72) is provided on one side of the fixing plate (71). A screw hole (74) is opened on one side of the fixing plate (71). The bolt (73) is threaded in the screw hole (74). The end of the bolt (73) is rotatably connected to the corresponding clamping plate (72). A support rod (75) is fixedly installed on the top surface of the clamping plate (72). A sliding groove (76) is opened on both sides of the bottom surface of the horizontal plate (1). The upper end of the support rod (75) is slidably set in the sliding groove (76).

7. A sampling device for lubricating oil processing according to claim 5, characterized in that: The connector (8) includes a fixing block (81), a T-shaped rod (82), and a sleeve (83). The upper and lower sides of the sampling tube (42) are fixedly installed with fixing blocks (81). The adjacent surfaces of the two fixing blocks (81) are inclined surfaces. A sleeve (83) is provided between the two fixing blocks (81). The transverse spring (66) and the crossbar (65) are connected through the sleeve (83). One end of the T-shaped rod (82) is slidably set in the sleeve (83). One end of the two T-shaped rods (82) is fixedly connected through the vertical spring (85). The other end of the T-shaped rod (82) is rotatably installed with a roller (86). The inclined surface of the fixing block (81) begins to form a wheel groove (84). The roller (86) is slidably set in the wheel groove (84).

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