Maintenance and detection device for coal chemical industry instrument

Abstract

The invention discloses a coal chemical industry instrument maintenance and detection device, which comprises a workbench, and a through groove is formed in the middle of the inner side of the workbench; the detection assembly is fixed on the upper surface of the workbench so as to detect the instrument; the moving assembly is arranged on the inner side of the workbench and corresponds to the through groove so as to move the instrument, and a limiting assembly is arranged at one end of the moving assembly; according to the coal chemical instrument detection device, the outer surface of a coal chemical instrument can be comprehensively detected while the coal chemical instrument is transported, potential safety hazards possibly existing on the surface of the coal chemical instrument are revealed, the accuracy and comprehensiveness of detection are ensured, and the cleaning assembly and the air injection assembly are automatically triggered after the coal chemical instrument reaches a designated position; and dust and stains on the surface of the coal chemical industry instrument can be cleaned, so that operation errors caused by impurities or stains are reduced, and the risk of safety accidents in the maintenance process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of instrument detection, and in particular to a maintenance detection device for coal chemical instruments. Background Art

[0002] In the coal chemical production process, instruments are important monitoring and control tools, and their accuracy and reliability are directly related to the safety and efficiency of production. Therefore, regular maintenance and inspection of coal chemical instruments are crucial. With the continuous development of the coal chemical industry and technological advancement, test benches for instrument maintenance and inspection have also undergone continuous improvement and upgrading. They are widely used in instrument maintenance and inspection of various coal chemical equipment.

[0003] Chinese patent announcement number CN218156248U4 discloses a maintenance and detection device for coal chemical instruments, which drives the inner gear rod to move upward through the meshing of the second gear and the gear wall, and then drives the support plate to adjust upward through the inner gear rod, and then drives the movable rods at both ends of the bottom to move along the inner wall through the upward movement of the inner gear rod, and uses the head of the movable rod to be stuck in the fixing hole to form a fixation, which is convenient for workers to work at high altitude;

[0004] However, the above device does not fully detect the coal chemical instrument panel during use, and lacks cleaning effect. Impurities or stains on the surface of the device can easily lead to maintenance errors of the coal chemical instrument panel. Summary of the invention

[0005] The main purpose of the present invention is to provide a maintenance and detection device for coal chemical instruments, which can effectively solve the problems of incomplete detection of coal chemical instrument panels, lack of cleaning effect, and impurities or stains on the surface that easily lead to maintenance errors of coal chemical instrument panels.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a maintenance and detection device for coal chemical instruments, comprising:

[0007] A workbench, wherein a through groove is provided in the middle of the inner side of the workbench;

[0008] A detection component is fixed on the upper surface of the workbench to detect the instrument;

[0009] A moving component is arranged on the inner side of the workbench and corresponds to the through slot to move the instrument, and a limit component is arranged at one end of the moving component;

[0010] The cleaning component is arranged at one end of the detection component, and jet components for cleaning the instrument surface are arranged on both sides of the cleaning component.

[0011] Preferably, the detection component includes a fixed shell fixedly connected to the upper end of the workbench, detection devices are provided on both sides of the inner surface of the fixed shell, a display screen is provided on one side of the upper end of the fixed shell, the detection device is electrically connected to the display screen, and a fixed block is fixedly connected to the front end of the fixed shell.

[0012] Preferably, the moving component includes a fixed seat one fixedly connected to the rear end of the workbench, a hydraulic device one is fixedly installed on the upper end of the fixed seat one, an output end of the hydraulic device one is fixedly connected to a connecting seat one, connecting rods are fixedly connected to the left and right sides of the connecting seat one, limiting grooves are provided on the left and right sides of the through groove, and the outer surfaces of the two connecting rods are slidably connected to the limiting grooves.

[0013] Preferably, the left and right side walls of the through groove are fixedly connected with racks, the upper end of the connecting seat one is rotatably connected with a gear, the outer surface of the gear is meshingly connected with the rack, the upper end of the gear is fixedly connected with a rotating disk, the front end of the workbench is fixedly connected with a fixing seat two, a switch is provided on the rear side of the fixing seat two, the outer surface of the connecting seat one is fixedly connected with a touch block, and the front end of the touch block is movably connected to the touch block.

[0014] Preferably, the limiting assembly includes a rotating seat rotatably connected to the upper end of the rotating disk, a sliding groove is opened at the upper end of the rotating seat, a bidirectional threaded rod is rotatably connected inside the sliding groove, a motor is fixedly installed on the left end of the bidirectional threaded rod, threaded sleeves are threadedly connected on both sides of the outer surface of the bidirectional threaded rod, the upper ends of the two threaded sleeves are fixedly connected to a connecting seat 2, and the ends of the two connecting seats 2 that are close to each other are fixedly connected to a clamping block.

[0015] Preferably, the cleaning assembly includes a second hydraulic device fixedly mounted on the upper end of the fixed block, the second hydraulic device is electrically connected to the touch block, the output end of the second hydraulic device is fixedly connected to a connecting block, the front end of the connecting block is fixedly connected to a lifting seat, cleaning brushes are provided on the front and rear sides of the inner surface of the lifting seat, and air outlets are provided on the front and rear sides of the inner surface of the lifting seat.

[0016] Preferably, the jet assembly includes a fixed seat three fixedly connected to the right side of the through slot, a movable slot is provided on the left side of the fixed seat three, an extrusion block is fixedly connected to the right side of the connecting block, the outer surface of the extrusion block is slidably connected to the movable slot, an airbag is arranged inside the movable slot, the lower end of the extrusion block is fixedly connected to the airbag, and exhaust valves are arranged on the front and rear sides of the airbag.

[0017] Preferably, air pipes are fixedly connected to the front and rear sides of the fixed seat three, one ends of the two air pipes are interconnected with the two outlet valves, the front and rear sides of the fixed seat three are fixedly connected with limiting blocks, the inner surfaces of the two limiting blocks are slidably connected to the two air pipes, one end of the two air pipes away from the fixed seat three is fixedly connected to the lifting seat, and one end of the two air pipes away from the fixed seat three is interconnected with the air outlet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention uses three structures, namely, a detection component, a moving component and a limit component, to transport the coal chemical instrument while performing a comprehensive detection of its outer surface, thereby revealing the potential safety hazards on the surface of the coal chemical instrument, ensuring the accuracy and comprehensiveness of the detection, and automatically triggering the cleaning component and the jet component after the coal chemical instrument reaches the specified position, so that the two components clean the dust and stains on the surface of the coal chemical instrument, reducing operational errors caused by impurities or stains, and reducing the risk of safety accidents during maintenance.

[0020] 2. The present invention can drive the limit assembly to transport the coal chemical instrument panel to the specified position and detect the outer surface of the coal chemical instrument panel through the cooperation of the detection assembly and the moving assembly. During the process, the engagement of the gear and the rack is used to make the rotating seat drive the coal chemical instrument panel to rotate. The dynamic detection during the rotation process can capture subtle defects that are difficult to find in static detection, such as cracks, scratches, etc., to achieve a comprehensive detection of the appearance of the coal chemical instrument panel, ensure that there are no omissions, and improve the accuracy of the detection.

[0021] 3. The present invention uses a cleaning component and an air jet component. While the cleaning brush cleans the surface of the coal chemical instrument, the air bag will spray air toward the surface of the coal chemical instrument panel to blow away fine dust and stains, remove stains and impurities on the surface of the coal chemical instrument panel, and reduce their corrosion and wear on the instrument material, thereby extending the service life of the instrument. Maintenance after cleaning can avoid misdiagnosis due to surface stains or impurities, and reduce unnecessary maintenance actions and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the whole of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the mobile assembly of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the detection component of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the jetting assembly of the present invention;

[0027] Figure 6 It is a partial structural schematic diagram of the jetting assembly of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the limiting assembly of the present invention;

[0029] Figure 8 It is a partial structural schematic diagram of the cleaning component of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the lifting seat of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the airbag of the present invention.

[0032] In the figure: 1, workbench; 11, through slot; 2, detection component; 21, fixed shell; 22, detection device; 23, display screen; 24, fixed block; 3, moving component; 31, fixed seat 1; 32, hydraulic device 1; 33, connecting seat 1; 34, connecting rod; 35, limit slot; 36, rack; 37, gear; 38, rotating disk; 39, fixed seat 2; 310, switch; 311, touch block; 4, limit component; 41 , rotating seat; 42, sliding groove; 43, two-way threaded rod; 431, motor; 44, threaded sleeve; 45, connecting seat two; 46, clamping block; 5, cleaning component; 51, hydraulic device two; 52, connecting block; 53, lifting seat; 54, cleaning brush; 55, air outlet; 6, jet assembly; 61, fixed seat three; 62, movable groove; 63, extrusion block; 64, airbag; 65, exhaust valve; 66, air pipe; 67, limit block. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1, as Figure 1-3 As shown, a maintenance and detection device for coal chemical instruments includes:

[0035] A workbench 1, wherein a through slot 11 is provided in the middle of the inner side of the workbench 1;

[0036] A detection component 2 is fixed on the upper surface of the workbench 1 to detect the instrument;

[0037] A moving component 3 is arranged on the inner side of the workbench 1 and corresponds to the through slot 11 to move the instrument, and a limit component 4 is arranged at one end of the moving component 3;

[0038] The cleaning component 5 is arranged at one end of the detection component 2, and both sides of the cleaning component 5 are provided with jet components 6 for cleaning the instrument surface.

[0039] Therefore, this solution uses the three structures of detection component 2, moving component 3, and limit component 4 to transport the coal chemical instrument while conducting a comprehensive inspection of its outer surface, revealing the potential safety hazards on the surface of the coal chemical instrument, ensuring the accuracy and comprehensiveness of the inspection, and automatically triggering the cleaning component 5 and the jet component 6 after the coal chemical instrument arrives at the specified position, so that the two can clean the dust and stains on the surface of the coal chemical instrument, reduce operational errors caused by impurities or stains, and reduce the risk of safety accidents during maintenance.

[0040] Embodiment 2: Based on Embodiment 1, this embodiment is to achieve the effect of conducting all-round inspection on the outer surface of the coal chemical instrument while transporting it.

[0041] See also Figure 1-4 , Figure 7 The detection component 2 includes a fixed shell 21 fixedly connected to the upper end of the workbench 1, and detection devices 22 are arranged on the left and right sides of the inner surface of the fixed shell 21. A display screen 23 is arranged on one side of the upper end of the fixed shell 21. The detection device 22 is electrically connected to the display screen 23, and a fixed block 24 is fixedly connected to the front end of the fixed shell 21.

[0042] Specifically, the detection device 22 mentioned above is a visual inspection device in the prior art, which can detect whether the instrument panel shell is intact, without damage or deformation, whether the surface is flat, without scratches, bubbles and stains, and assembly integrity, etc. Its detection principle is mainly based on image processing and machine vision technology:

[0043] The equipment uses high-resolution industrial cameras and lenses to capture images of the outer surface of coal chemical instruments. These images are usually stored in digital form and contain rich details. The collected images are pre-processed, such as denoising and contrast enhancement, to improve image quality. Then, the image processing algorithm is used to analyze the image to identify potential defects, stains or damaged areas.

[0044] Based on image processing, the equipment will extract features related to the outer surface of coal chemical instruments, such as shape, color, texture, etc. These features are used for subsequent classification and recognition, and then through machine learning or deep learning algorithms, the equipment can identify specific patterns in the image, such as cracks, scratches, corrosion, etc. These patterns correspond to common defects on the outer surface of coal chemical instruments;

[0045] Based on the results of pattern recognition, the device will make a decision to determine whether there are defects on the outer surface of the coal chemical instrument. If there are defects, the device will output the corresponding test results, such as the location, size, type, etc. of the defects.

[0046] Furthermore, the detection device 22 can transmit the detection results of the coal chemical instrument to the display screen 23 for display. This is a prior art, and the main working principle is:

[0047] The extracted characteristic information is encapsulated into a specific data packet format for transmission. The data packet may contain detailed information of the defect, image data, and equipment status information. The data packet is transmitted to the control system where the display screen 23 is located through a specific communication protocol. After receiving the data packet, the control system parses it and displays it on the display screen 23. The display screen 23 may graphically display information such as the location, size, and type of the defect. Maintenance personnel can perform interactive operations through the interface on the display screen 23, such as viewing detailed test results, adjusting test parameters, etc.

[0048] See also Figure 2 and Figure 3 The moving assembly 3 includes a fixed seat 31 fixedly connected to the rear end of the workbench 1, a hydraulic device 32 is fixedly installed on the upper end of the fixed seat 31, and the output end of the hydraulic device 32 is fixedly connected to a connecting seat 33, and the left and right sides of the connecting seat 33 are fixedly connected with connecting rods 34, and the left and right sides of the through groove 11 are provided with limiting grooves 35, and the outer surfaces of the two connecting rods 34 are slidably connected to the limiting grooves 35.

[0049] Furthermore, the hydraulic device 32 can push the connecting seat 33 to move forward as a whole, driving the coal chemical instrument to move, wherein the sliding connection between the connecting rod 34 and the limiting groove 35 can keep the connecting seat 33 stable.

[0050] See also Figure 3 The left and right side walls of the through groove 11 are fixedly connected with racks 36, the upper end of the connecting seat 1 33 is rotatably connected with a gear 37, the outer surface of the gear 37 is meshed with the rack 36, the upper end of the gear 37 is fixedly connected with a rotating disk 38, the front end of the workbench 1 is fixedly connected with a fixing seat 2 39, the rear side of the fixing seat 2 39 is provided with a switch 310, the outer surface of the connecting seat 1 33 is fixedly connected with a touch block 311, and the front end of the touch block 311 is movably connected with the touch block 311.

[0051] Furthermore, when the connecting seat 33 moves, the gear 37 will mesh with the rack 36, so that the gear 37 and the rotating disk 38 rotate together, thereby driving the coal chemical instrument to rotate, so that the detection devices 22 on both sides can perform a comprehensive inspection of its appearance to ensure that there are no omissions. When the coal chemical instrument panel reaches the specified position, the touch block 311 will come into contact with the switch 310.

[0052] See also Figure 7 The limit assembly 4 includes a rotating seat 41 rotatably connected to the upper end of the rotating disk 38, a sliding groove 42 is opened at the upper end of the rotating seat 41, a bidirectional threaded rod 43 is rotatably connected inside the sliding groove 42, a motor 431 is fixedly installed at the left end of the bidirectional threaded rod 43, threaded sleeves 44 are threadedly connected on both sides of the outer surface of the bidirectional threaded rod 43, the upper ends of the two threaded sleeves 44 are fixedly connected to a connecting seat 2 45, and the ends of the two connecting seats 2 45 close to each other are fixedly connected to a clamping block 46.

[0053] Furthermore, when the rotating disk 38 drives the rotating seat 41 to move to the front end, the rotating disk 38 can no longer rotate, but at this time the coal chemical instrument panel can be rotated by manually rotating the rotating seat 41, which is convenient for maintenance and manual adjustment of the angle of the coal chemical instrument panel for maintenance. The thread grooves on the surface of the two-way threaded rod 43 are in opposite directions, and the motor 431 has a self-locking function. When driving the two-way threaded rod 43 to rotate, the two clamping blocks 46 can be moved in opposite directions at the same time, which is convenient for clamping and limiting coal chemical instrument panels of different sizes.

[0054] Then, the coal chemical instrument panel that needs to be repaired is placed between the two clamping blocks 46, and the motor 431 is started to drive the bidirectional threaded rod 43 to rotate, so that the two threaded sleeves 44, the connecting seat 2 45 and the clamping block 46 move toward the middle at the same time to clamp the coal chemical instrument panel, and then the hydraulic device 32 is started to push the connecting seat 33 to move forward as a whole. During the movement, the rack 36 and the gear 37 are engaged, so that the rotating disk 38 and the rotating seat 41 rotate, thereby driving the coal chemical instrument panel to rotate, so that its surface can be evenly detected by the detection device 22.

[0055] Therefore, this solution can drive the limit component 4 to transport the coal chemical instrument panel to the specified position and detect the outer surface of the coal chemical instrument panel through the cooperation of the detection component 2 and the moving component 3. During the process, the engagement of the gear 37 and the rack 36 is used to make the rotating seat 41 drive the coal chemical instrument panel to rotate. The dynamic detection during the rotation process can capture subtle defects that are difficult to find in static detection, such as cracks, scratches, etc., to achieve a comprehensive detection of the appearance of the coal chemical instrument panel, ensure that there are no omissions, and improve the accuracy of the detection.

[0056] Embodiment 3: This embodiment is based on Embodiment 1 and is for achieving the effect of cleaning the outer surface of coal chemical instrument.

[0057] See also Figure 1 , Figure 5 , Figure 6 , Figure 8-10The cleaning component 5 includes a hydraulic device 2 51 fixedly installed on the upper end of the fixed block 24, the hydraulic device 2 51 is electrically connected to the touch block 311, the output end of the hydraulic device 2 51 is fixedly connected to a connecting block 52, the front end of the connecting block 52 is fixedly connected to a lifting seat 53, the front and rear sides of the inner surface of the lifting seat 53 are provided with cleaning brushes 54, and the front and rear sides of the inner surface of the lifting seat 53 are provided with air outlets 55.

[0058] Specifically, when the touch block 311 is touched, the hydraulic device 2 51 is activated. This is a prior art, and its main working principle is: before being touched, the touch block 311 is in its original state, usually a disconnected or unactivated state. When the touch block 311 is touched externally, its internal mechanism changes, causing the touch block 311 to change from the original state to the activated state. The activated state of the touch block 311 sends an electrical signal or a mechanical signal to the control system. After receiving the signal, the control system triggers the starting mechanism of the hydraulic device 2 51, and the hydraulic pump starts to work, pushing the hydraulic oil into the extension cavity of the hydraulic cylinder, pushing the piston and the connected load to extend;

[0059] When the touch block 311 loses contact, its internal mechanism returns to its original state and sends a signal indicating that the switch has been reset. After the control system receives the reset signal of the touch block 311, it triggers the retraction mechanism of the hydraulic device 2 51, and the hydraulic pump changes direction or stops working. At the same time, the retraction chamber of the hydraulic cylinder begins to receive the hydraulic oil from the extension chamber, pushing the piston and the load back to the initial position.

[0060] Among them, the distance between the two cleaning brushes 54 can clean the front and back sides of the coal chemical instrument panel to remove stains and impurities on the surface of the coal chemical instrument, and this distance can allow the coal chemical instrument panel to move slightly backward following the rotating seat 41, so that the switch 310 is separated from the touch block 311, thereby returning the hydraulic device 2 51 to its initial position.

[0061] See also Figure 5 , Figure 6 and Fig.10 The jet assembly 6 includes a fixed seat 3 61 fixedly connected to the right side of the through groove 11, a movable groove 62 is provided on the left side of the fixed seat 3 61, an extrusion block 63 is fixedly connected to the right side of the connecting block 52, the outer surface of the extrusion block 63 is slidably connected to the movable groove 62, an air bag 64 is arranged inside the movable groove 62, the lower end of the extrusion block 63 is fixedly connected to the air bag 64, and an exhaust valve 65 is arranged on the front and rear sides of the air bag 64.

[0062] Furthermore, when the squeezing block 63 descends, it squeezes the airbag 64, causing the gas inside the airbag 64 to be discharged from the air outlet valves 65 on both sides. A one-way valve is provided on the outer surface of the airbag 64, which can only allow air to enter but not to exit. The air outlet valve 65 can only allow air to exit but not to enter.

[0063] The front and rear sides of the fixed seat three 61 are fixedly connected with air pipes 66, one ends of the two air pipes 66 are communicated with the two air outlet valves 65, the front and rear sides of the fixed seat three 61 are fixedly connected with limiting blocks 67, the inner surfaces of the two limiting blocks 67 are slidably connected with the two air pipes 66, one end of the two air pipes 66 away from the fixed seat three 61 is fixedly connected to the lifting seat 53, and one end of the two air pipes 66 away from the fixed seat three 61 is communicated with the air outlet 55.

[0064] Furthermore, the air pipe 66 can transmit the gas in the air bag 64 to the air outlet 55 for spraying, thereby blowing away the fine dust and stains on the coal chemical instrument panel, thereby improving the cleaning efficiency and quality.

[0065] Furthermore, when the touch block 311 contacts the switch 310, the hydraulic device 2 51 will be started, so that the hydraulic device 2 51 drives the connecting block 52, the lifting seat 53 and the cleaning brush 54 to descend, and clean the front and rear sides of the coal chemical instrument panel. During the descent, the extrusion blocks 63 on both sides will squeeze the airbag 64 downward, so that the gas in the airbag 64 is transmitted from the outlet valve 65 and the air pipe 66 to the air outlet 55 and sprayed out, and the surface of the coal chemical instrument panel is sprayed. Then, the hydraulic device 1 32 is started to drive the rotating seat 41 to retreat as a whole to a certain position, so that the touch block 311 is separated from the switch 310, so that the hydraulic device 2 51 returns to the initial position. At this time, the airbag 64 will be re-inflated, and then the subsequent maintenance of the coal chemical instrument panel will continue.

[0066] Therefore, this solution uses the cleaning component 5 and the jet component 6. While the cleaning brush 54 cleans the surface of the coal chemical instrument, the airbag 64 will spray air toward the surface of the coal chemical instrument panel to blow away fine dust and stains, remove stains and impurities on the surface of the coal chemical instrument panel, and reduce their corrosion and wear on the instrument material, thereby extending the service life of the instrument. Maintenance after cleaning can avoid misdiagnosis due to surface stains or impurities, and reduce unnecessary maintenance actions and costs.

[0067] It should be particularly noted that the specific installation methods, circuit connection methods and control methods of the detection device 22, display screen 23, hydraulic device 1 32, switch 310, motor 431 and hydraulic device 2 51 used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0068] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A maintenance and detection device for coal chemical instruments, characterized in that: include: A workbench (1), wherein a through groove (11) is provided in the middle of the inner side of the workbench (1); A detection component (2) is fixed on the upper surface of the workbench (1) to detect the instrument; A moving component (3) is arranged on the inner side of the workbench (1) and corresponds to the through slot (11) to move the instrument, and a limit component (4) is arranged at one end of the moving component (3); The cleaning component (5) is arranged at one end of the detection component (2), and jet components (6) for cleaning the instrument surface are arranged on both sides of the cleaning component (5).

2. A coal chemical instrument maintenance and detection device according to claim 1, characterized in that: The detection assembly (2) comprises a fixed shell (21) fixedly connected to the upper end of the workbench (1); detection devices (22) are arranged on both left and right sides of the inner surface of the fixed shell (21); a display screen (23) is arranged on one side of the upper end of the fixed shell (21); the detection device (22) is electrically connected to the display screen (23); and a fixed block (24) is fixedly connected to the front end of the fixed shell (21).

3. The maintenance and detection device for coal chemical instruments according to claim 1 is characterized in that: The moving assembly (3) comprises a fixed seat (31) fixedly connected to the rear end of the workbench (1); a hydraulic device (32) is fixedly installed on the upper end of the fixed seat (31); an output end of the hydraulic device (32) is fixedly connected to a connecting seat (33); connecting rods (34) are fixedly connected to the left and right sides of the connecting seat (33); limiting grooves (35) are provided on the left and right sides of the through groove (11); and the outer surfaces of the two connecting rods (34) are slidably connected to the limiting grooves (35).

4. A coal chemical instrument maintenance and detection device according to claim 2, characterized in that: The left and right side walls of the through groove (11) are both fixedly connected with racks (36); the upper end of the connecting seat (33) is rotatably connected with a gear (37); the outer surface of the gear (37) is meshed with the rack (36); the upper end of the gear (37) is fixedly connected with a rotating disk (38); the front end of the workbench (1) is fixedly connected with a fixing seat (39); a switch (310) is arranged at the rear side of the fixing seat (39); the outer surface of the connecting seat (33) is fixedly connected with a touch block (311); the front end of the touch block (311) is movably connected with the touch block (311).

5. A coal chemical instrument maintenance and detection device according to claim 4, characterized in that: The limiting assembly (4) comprises a rotating seat (41) rotatably connected to the upper end of the rotating disk (38); a sliding groove (42) is provided at the upper end of the rotating seat (41); a bidirectional threaded rod (43) is rotatably connected inside the sliding groove (42); a motor (431) is fixedly mounted on the left end of the bidirectional threaded rod (43); threaded sleeves (44) are threadedly connected to the two sides of the outer surface of the bidirectional threaded rod (43); the upper ends of the two threaded sleeves (44) are fixedly connected to a second connecting seat (45); and the ends of the two connecting seats (45) that are close to each other are fixedly connected to a clamping block (46).

6. A coal chemical instrument maintenance and detection device according to claim 4, characterized in that: The cleaning assembly (5) comprises a second hydraulic device (51) fixedly mounted on the upper end of the fixed block (24); the second hydraulic device (51) is electrically connected to the touch block (311); the output end of the second hydraulic device (51) is fixedly connected to a connection block (52); the front end of the connection block (52) is fixedly connected to a lifting seat (53); cleaning brushes (54) are provided on both the front and rear sides of the inner surface of the lifting seat (53); and air outlets (55) are provided on both the front and rear sides of the inner surface of the lifting seat (53).

7. A coal chemical instrument maintenance and detection device according to claim 6, characterized in that: The jet assembly (6) comprises a fixed seat three (61) fixedly connected to the right side of the through slot (11), a movable slot (62) is provided on the left side of the fixed seat three (61), an extrusion block (63) is fixedly connected to the right side of the connecting block (52), the outer surface of the extrusion block (63) is slidably connected to the movable slot (62), an air bag (64) is provided inside the movable slot (62), the lower end of the extrusion block (63) is fixedly connected to the air bag (64), and air outlet valves (65) are provided on both the front and rear sides of the air bag (64).

8. A coal chemical instrument maintenance and detection device according to claim 7, characterized in that: The front and rear sides of the fixed seat three (61) are fixedly connected with air pipes (66), one end of the two air pipes (66) is communicated with the two air outlet valves (65), the front and rear sides of the fixed seat three (61) are fixedly connected with limiting blocks (67), the inner surfaces of the two limiting blocks (67) are slidably connected with the two air pipes (66), one end of the two air pipes (66) away from the fixed seat three (61) is fixedly connected with the lifting seat (53), and one end of the two air pipes (66) away from the fixed seat three (61) is communicated with the air outlet (55).

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