A real-time dust concentration monitoring device for chemical workshops

Abstract

This invention discloses a real-time dust concentration monitoring device for chemical workshops, relating to the field of dust concentration monitoring equipment. It includes a mounting frame, with a device body mounted on the inner wall of the mounting frame. A first mounting groove is formed on the inner wall of the mounting frame at the end furthest from the device body. A through groove is formed on the inner wall of the first mounting groove. A second and third mounting grooves are formed inside the mounting frame. A motor is fixedly connected to the outer wall of the mounting frame, and a drive shaft is fixedly connected to the output end of the motor. One end of the drive shaft penetrates through the inner wall of the third mounting groove. A drive assembly is provided on the side wall inside the third mounting groove, and a reducer is fixedly connected to one end of the drive shaft. A winding assembly is provided at the output end of the reducer. By pressing the frame in conjunction with the inner wall of the first mounting groove, the four edges of the transparent membrane are fully compressed, thereby blocking the channel for dust to enter between the transparent membrane and the device body from the edges of the transparent membrane, and preventing dust from adhering to the surface of the laser emitter of the device body.

Description

Technical Field

[0001] This invention relates to the field of dust concentration monitoring equipment technology, specifically to a real-time dust concentration monitoring device for chemical workshops. Background Technology

[0002] Dust concentration is the amount of dust in a unit volume of air. It can be expressed in two ways: one is mass concentration, which is the number of milligrams of dust contained in one cubic meter of air (mg / m³). 3 Another type is particulate concentration, which is the number of dust particles per cubic meter of air. When conducting safety assessments of environmental dust concentration, laser dust concentration monitoring devices are usually used to detect dust concentration, so that staff can know the condition of the ambient air. However, when there is a lot of dust, it will adhere to the laser emitter, causing the laser dust concentration monitoring device to have errors in detecting dust concentration.

[0003] Chinese patent CN223461432U discloses a real-time dust concentration monitoring device, which includes a device body and a device frame that is fixed to one side of the device body. The upper half and lower half of the device frame are respectively rotatably equipped with a first winding roller and a second winding roller, which solves the problem of inconvenience in cleaning dust from the surface of a laser emitter.

[0004] However, existing transparent protective films cannot be effectively compressed, and dust can easily penetrate from the edges of the transparent film between the transparent film and the main body of the device, and then adhere to the surface of the laser emitter of the main body of the device, resulting in a decrease in the accuracy of dust concentration detection results. Summary of the Invention

[0005] The purpose of this invention is to provide a real-time dust concentration monitoring device for chemical workshops, in order to solve the problem in the prior art that dust can easily penetrate from the edge of the transparent film into the space between the transparent film and the main body of the device, and then adhere to the surface of the laser emitter of the main body of the device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a real-time dust concentration monitoring device for a chemical workshop, comprising an installation frame, a device body being provided on the inner sidewall of the installation frame, a first installation groove being provided on the inner sidewall of the end of the installation frame away from the device body, a through groove being provided on the inner sidewall of the first installation groove, a second installation groove and a third installation groove being provided inside the installation frame, a motor being fixedly connected to the outer sidewall of the installation frame, a drive shaft being fixedly connected to the output end of the motor, one end of the drive shaft penetrating through the inner sidewall of the third installation groove, a drive assembly being provided on the sidewall of the drive shaft located inside the third installation groove, a reducer being fixedly connected to one end of the drive shaft, a winding assembly being provided at the output end of the reducer, a pressing assembly being provided inside the first installation groove and connected to the drive assembly, and a transparent film being provided inside the first installation groove;

[0007] The clamping assembly includes two third rotating columns movably connected to the inner wall of the third mounting slot. A gear is fixedly connected to the side wall of the middle part of the third rotating column. A rack is meshed with the side wall of the gear. A connecting rod is fixedly connected to the side wall of the rack. One end of the connecting rod passes through a through slot and is slidably connected to the inner wall of the through slot. A clamping frame is fixedly connected to the end of the connecting rod located inside the first mounting slot. A fourth mounting slot is opened on the side walls of both the upper and lower ends of the clamping frame. A fourth rotating column is movably connected to the inner wall of the fourth mounting slot via a pin. A fifth mounting slot is opened on the side walls of both the left and right ends of the clamping frame. A second placement slot is opened on the inner wall of both the upper and lower ends of the fifth mounting slot. A fifth rotating column is rotatably connected to the inner wall of the second placement slot. A rotating cylinder is movably connected to the side wall of the fifth rotating column. A belt is movably connected to the outer wall of the rotating cylinder and is slidably connected to the inner wall of the fifth mounting slot.

[0008] Furthermore, the drive assembly includes a rotating block fixedly connected to the side wall of the drive shaft. The side wall of the rotating block is evenly provided with a plurality of first placement slots. A first spring is fixedly connected to the bottom wall of the first placement slot. A retaining plate is fixedly connected to one end of the first spring. A first pulley is movably sleeved on the side wall of the rotating block. A retaining groove is provided on the inner wall of the first pulley. A first synchronous belt is provided on the outer wall of the first pulley. Two second pulleys are provided on the inner wall of the first synchronous belt. The second pulleys are respectively fixedly connected to the side wall of one end of the third rotating column.

[0009] Furthermore, the winding assembly includes a first rotating column fixedly connected to the output end of the reducer. A third pulley is fixedly connected to the side wall of one end of the first rotating column. The end of the first rotating column away from the reducer is movably connected to the inner side wall of the third mounting groove. A second synchronous belt is movably connected to the side wall of the third pulley. Two fourth pulleys are movably connected to the inner wall of the second synchronous belt. A second rotating column is fixedly connected to one end of each fourth pulley. The end of the second rotating column away from the fourth pulley penetrates the inner side wall of the second mounting groove. A winding roller is fixedly connected to the side wall of the second rotating column inside the second mounting groove. The winding rollers are located at the upper and lower ends of the main body of the device. The upper and lower ends of the transparent film are fixedly connected to the side wall of the winding roller. A connecting groove is provided in the inner side wall of the second mounting groove, and the transparent film passes through the connecting groove.

[0010] Furthermore, a support plate is fixedly connected to the lower end of the reducer, and one end of the support plate is fixedly connected to the inner side wall of the third mounting groove.

[0011] Furthermore, a limiting post is fixedly connected to the inner sidewall of the third mounting groove, and a slider is movably connected to the sidewall of the limiting post. The lower end of the slider is fixedly connected to the rack. A second spring is movably sleeved on the sidewall of one end of the limiting post. The left and right ends of the second spring are fixedly connected to the sidewall of the slider and the inner sidewall of the third mounting groove, respectively. Multiple third springs are evenly fixedly connected to the sidewalls of the upper and lower ends of the clamping frame. One end of the third spring is fixedly connected to the inner sidewall of the first mounting groove. The third spring and the fourth mounting groove are located on the front and rear sides of the clamping frame, respectively.

[0012] Furthermore, multiple sixth mounting slots are evenly provided at the left and right ends of the clamping frame, and ball bearings are movably connected to the inner wall of the sixth mounting slot, and the ball bearings are movably connected to the inner wall of the first mounting slot.

[0013] Furthermore, a limiting ring is movably connected to the inner sidewall of the third mounting groove, and one end of the limiting ring is fixedly connected to the first pulley.

[0014] Furthermore, a limiting plate is fixedly connected to the side wall of one end of the third rotating column, and one end of the second pulley is fixedly connected to the limiting plate.

[0015] Furthermore, a first limiting disc is fixedly connected to the side wall of the first rotating column, one end of the third pulley is fixedly connected to the first limiting disc, and one end of the fourth pulley is fixedly connected to a second limiting disc.

[0016] Furthermore, both the upper and lower ends of the main body of the device are fixedly connected to fixing plates by bolts, and one end of the fixing plate is fixedly connected to the side wall of the mounting frame by bolts.

[0017] Compared with existing technologies, the present invention provides a real-time dust concentration monitoring device for chemical workshops. By using a clamping frame in conjunction with the inner wall of the first mounting groove, the four edges of the transparent film are fully clamped, thereby blocking the channel for dust to enter between the transparent film and the main body of the device from the edges of the transparent film. This prevents dust from adhering to the surface of the laser emitter of the main body of the device, fundamentally solving the detection error problem caused by dust obstruction. Secondly, a single motor is used to drive the clamping component and the winding component simultaneously. Through the centrifugal clutch structure of the drive component, the clamping is first loosened, then the film is wound up and replaced, and finally the clamping is automatically reset in sequence. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1Cross-sectional view of the mounting frame provided in an embodiment of the present invention. Figure 1 ;

[0020] Figure 2 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 1 ;

[0021] Figure 3 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 2 ;

[0022] Figure 4 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 3 ;

[0023] Figure 5 Cross-sectional view of the mounting frame provided in an embodiment of the present invention. Figure 2 ;

[0024] Figure 6 This is an exploded structural diagram of the clamping assembly provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the driving component provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the winding assembly provided in an embodiment of the present invention;

[0027] Figure 9 This is an exploded structural diagram of the driving component provided in an embodiment of the present invention;

[0028] Figure 10 Cross-sectional view of the mounting frame provided in an embodiment of the present invention. Figure 3 .

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Mounting frame; 11. Device body; 12. First mounting slot; 13. Through slot; 14. Second mounting slot; 15. Connecting slot; 16. Third mounting slot; 2. Motor; 21. Drive shaft; 3. Drive assembly; 31. Rotating block; 32. First placement slot; 33. First spring; 34. Clamping plate; 35. First pulley; 351. Clamping slot; 36. Limiting ring; 37. First synchronous belt; 38. Second pulley; 39. Limiting plate; 4. Reducer; 41. Support plate; 5. Rewinding assembly; 51. First rotating column; 511. First limiting disc; 52. Third pulley; 53. 54. Second synchronous belt; 54. Fourth pulley; 541. Second limit plate; 55. Second rotating column; 56. Take-up roller; 6. Pressing assembly; 61. Third rotating column; 611. Gear; 612. Rack; 613. Connecting rod; 62. Pressing frame; 63. Fourth mounting slot; 631. Fourth rotating column; 64. Fifth mounting slot; 65. Second placement slot; 651. Fifth rotating column; 652. Rotating cylinder; 66. Belt body; 67. Sixth mounting slot; 671. Ball bearing; 68. Third spring; 7. Limiting column; 71. Slider; 72. Second spring; 8. Transparent film; 9. Fixing plate. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] To address the issue of dust easily penetrating from the edges of the transparent film between the transparent film and the device body, and subsequently adhering to the surface of the laser emitter on the device body, please refer to [link to relevant documentation]. Figure 1 - Figure 10 The following preferred technical solutions are provided.

[0033] An embodiment of the present invention provides a real-time dust concentration monitoring device for a chemical workshop, comprising a mounting frame 1, a device body 11 disposed on the inner side wall of the mounting frame 1, a first mounting groove 12 formed on the inner side wall of the mounting frame 1 away from the device body 11, a through groove 13 formed on the inner side wall of the first mounting groove 12, a second mounting groove 14 and a third mounting groove 16 formed inside the mounting frame 1, a motor 2 fixedly connected to the outer side wall of the mounting frame 1, a drive shaft 21 fixedly connected to the output end of the motor 2, one end of the drive shaft 21 penetrating through the inner side wall of the third mounting groove 16, a drive assembly 3 disposed on the side wall of the drive shaft 21 inside the third mounting groove 16, a reducer 4 fixedly connected to one end of the drive shaft 21, a winding assembly 5 disposed at the output end of the reducer 4, a pressing assembly 6 connected to the drive assembly 3 disposed inside the first mounting groove 12, and a transparent film 8 disposed inside the first mounting groove 12;

[0034] The clamping assembly 6 includes two third rotating columns 61 movably connected to the inner wall of the third mounting groove 16. A gear 611 is fixedly connected to the side wall of the middle part of the third rotating column 61. A rack 612 is meshed with the side wall of the gear 611. A connecting rod 613 is fixedly connected to the side wall of the rack 612. One end of the connecting rod 613 passes through the through groove 13 and is slidably connected to the inner wall of the through groove 13. A clamping frame 62 is fixedly connected to the end of the connecting rod 613 located inside the first mounting groove 12. The side walls of the clamping frame 62 at both the upper and lower ends are open. A fourth mounting groove 63 is provided, and a fourth rotating column 631 is movably connected to the inner wall of the fourth mounting groove 63 via a pin. A fifth mounting groove 64 is provided on the side walls of both the left and right ends of the clamping frame 62. A second placement groove 65 is provided on the inner walls of both the upper and lower ends of the fifth mounting groove 64. A fifth rotating column 651 is rotatably connected to the inner wall of the second placement groove 65. A rotating cylinder 652 is movably connected to the side wall of the fifth rotating column 651. A belt 66 is movably connected to the outer wall of the rotating cylinder 652. The belt 66 is slidably connected to the inner wall of the fifth mounting groove 64.

[0035] In this embodiment, a display screen for numerical display and a laser emitter for dust detection are provided on one side of the main body 11 of the device, as disclosed in patent CN223461432U. Secondly, the belt body 66 can be made of polyurethane.

[0036] Specifically, the starter motor 2 drives the drive assembly 3 to rotate, which in turn drives the third rotating column 61 to rotate, thereby driving the rack 612 to move linearly. This, in turn, drives the clamping frame 62 to retract and release the transparent film 8 via the connecting rod 613. Simultaneously, the drive shaft 21 inputs power to the reducer 4, which, after speed reduction and torque amplification, drives the winding assembly 5 to work, achieving synchronous linkage between the winding assembly 5 and the clamping assembly 6. This winds up the dust-laden transparent film 8 to the lower winding roller 56, while the upper winding roller 56 simultaneously releases the clean transparent film 8. During the replacement of the transparent film 8, the rotation of the fourth rotating column 631 in the fourth mounting groove 63 at the upper and lower ends of the clamping frame 62 and the sliding of the belt body 66 in the fifth mounting groove 64 at the left and right ends convert the sliding friction into rolling friction, thereby improving the smoothness of the movement of the transparent film 8. After the transparent film 8 is replaced, the motor 2 stops rotating, the clamping frame 62 automatically resets and re-clamps the transparent film 8, thereby effectively reducing the intrusion of dust from the edge of the transparent film 8 between the transparent film 8 and the device body 11, and preventing dust from adhering to the laser emitter of the device body 11.

[0037] The drive assembly 3 includes a rotating block 31 fixedly connected to the side wall of the drive shaft 21. The side wall of the rotating block 31 is evenly provided with a plurality of first placement slots 32. The bottom wall of the first placement slot 32 is fixedly connected with a first spring 33. One end of the first spring 33 is fixedly connected with a retaining plate 34. The side wall of the rotating block 31 is movably sleeved with a first pulley 35. The inner wall of the first pulley 35 is provided with a retaining groove 351. The outer wall of the first pulley 35 is provided with a first synchronous belt 37. The inner wall of the first synchronous belt 37 is provided with two second pulleys 38. The second pulleys 38 are respectively fixedly connected to the side wall of one end of the third rotating column 61. In this embodiment, a gap is provided between the retaining groove 351 and the outer wall of the rotating block 31.

[0038] Specifically, motor 2 drives drive shaft 21 to rotate, which in turn drives rotating block 31 in drive assembly 3 to rotate at high speed. The clamping plate 34, under the action of centrifugal force, overcomes the elastic force of the first spring 33 and extends outward, engaging with the groove 351 on the inner wall of the first pulley 35, realizing rigid transmission between rotating block 31 and first pulley 35, driving the first pulley 35 to rotate, and then driving the two second pulleys 38 to rotate synchronously through the first synchronous belt 37, which in turn drives the third rotating column 61 to rotate, driving the pressing assembly 6 to complete the loosening action of transparent film 8. After the transparent film 8 is replaced, drive motor 2 stops, the centrifugal force of rotating block 31 disappears, and clamping plate 34 retracts into the first placement groove 32 under the pulling force of the first spring 33. The transmission connection between rotating block 31 and first pulley 35 is automatically released, so that the first pulley 35, the first synchronous belt 37 and the second pulley 38 are in an unrestrained and movable state. Then, the elastic force of the second spring 72 and the third spring 68 drives the pressing frame 62 to automatically reset and re-press the transparent film 8.

[0039] The take-up assembly 5 includes a first rotating column 51 fixedly connected to the output end of the reducer 4. A third pulley 52 is fixedly connected to the side wall of one end of the first rotating column 51. The end of the first rotating column 51 away from the reducer 4 is movably connected to the inner side wall of the third mounting groove 16. A second synchronous belt 53 is movably connected to the side wall of the third pulley 52. ​​Two fourth pulleys 54 are movably connected to the inner wall of the second synchronous belt 53. A second rotating column 55 is fixedly connected to one end of each of the fourth pulleys 54. The end of the second rotating column 55 away from the fourth pulley 54 passes through the inner side wall of the second mounting groove 14. A take-up roller 56 is fixedly connected to the side wall of the second rotating column 55 inside the second mounting groove 14. The take-up roller 56 is located at the upper and lower ends of the main body 11 of the device. The upper and lower ends of the transparent film 8 are fixedly connected to the side walls of the take-up roller 56. A connecting groove 15 is opened in the inner side wall of the second mounting groove 14, and the transparent film 8 passes through the connecting groove 15.

[0040] Specifically, the reducer 4 outputs power to drive the first rotating column 51 to rotate, and the third pulley 52 fixed on the first rotating column 51 rotates accordingly. The second synchronous belt 53 drives the two fourth pulleys 54 to rotate synchronously, and then the second rotating column 55 drives the upper and lower take-up rollers 56 to operate synchronously, so that the transparent film 8 with dust is wound up to the side wall of the lower take-up roller 56. At the same time, the upper take-up roller 56 releases the clean transparent film 8 without dust, thus completing the automatic replacement of the transparent film 8 at the detection window.

[0041] A support plate 41 is fixedly connected to the lower end of the reducer 4, and one end of the support plate 41 is fixedly connected to the inner side wall of the third mounting groove 16.

[0042] Specifically, the support plate 41 serves as the load-bearing and fixing component of the reducer 4. One end of the support plate is rigidly fixed to the inner wall of the third mounting groove 16 inside the mounting frame 1, and the other end is firmly attached to and fixed to the lower end face of the reducer 4. This stably supports and positions the reducer 4 in the preset position inside the third mounting groove 16, effectively preventing the reducer 4 from displacing, vibrating, or loosening during operation. This ensures that the reducer 4 can stably receive the power input from the drive shaft 21 and accurately transmit the reduced and increased torque power to the winding assembly 5, providing a reliable power transmission foundation for the smooth winding and replacement of the transparent film 8.

[0043] The inner wall of the third mounting groove 16 is fixedly connected to a limiting post 7. The side wall of the limiting post 7 is movably connected to a slider 71. The lower end of the slider 71 is fixedly connected to a rack 612. The side wall of one end of the limiting post 7 is movably sleeved with a second spring 72. The left and right ends of the second spring 72 are fixedly connected to the side wall of the slider 71 and the inner wall of the third mounting groove 16, respectively. Multiple third springs 68 are evenly fixedly connected to the side walls of the upper and lower ends of the clamping frame 62. One end of the third spring 68 is fixedly connected to the inner wall of the first mounting groove 12. The third spring 68 and the fourth mounting groove 63 are located on the front and rear sides of the clamping frame 62, respectively.

[0044] Specifically, the limiting post 7 is fixedly installed on the inner wall of the third mounting groove 16. The slider 71, which is fixedly connected to the rack 612, is movably sleeved on the limiting post 7. The limiting post 7 provides axial guidance and constraint to the slider 71, thereby achieving radial limiting of the rack 612 and preventing the rack 612 from deviating during meshing with the gear 611. This significantly improves the smoothness and accuracy of the linear motion of the rack 612. At the same time, the second spring 72 is movably sleeved on the end of the limiting post 7, with its left and right ends fixedly connected to the side wall of the slider 71 and the inner wall of the third mounting groove 16, respectively. Multiple first springs... Three springs 68 are evenly distributed at the upper and lower ends of the clamping frame 62, and the two ends of the third spring 68 are fixedly connected to the side wall of the clamping frame 62 and the inner side wall of the first mounting groove 12, respectively. When the motor 2 stops running and the transmission connection of the drive assembly 3 is automatically disconnected, the second spring 72 pushes the slider 71 to reset along the limit post 7 through elastic force, thereby driving the rack 612 to move in the opposite direction. Together with the multi-point uniform elastic force of the third spring 68 directly acting on the clamping frame 62, the clamping frame 62 is driven to reset smoothly forward and press the transparent film 8 back onto the inner wall of the first mounting groove 12.

[0045] Multiple sixth mounting slots 67 are evenly provided at both ends of the clamping frame 62. A ball bearing 671 is movably connected to the inner wall of the sixth mounting slot 67, and the ball bearing 671 is movably connected to the inner wall of the first mounting slot 12.

[0046] Specifically, multiple sixth mounting slots 67 are evenly provided at both ends of the clamping frame 62. Each sixth mounting slot 67 has a freely rotatable ball bearing 671 movably embedded in its inner wall. The outer surface of the ball bearing 671 rolls in contact with the inner side wall of the first mounting slot 12. When the clamping frame 62 moves back and forth in the first mounting slot 12 to loosen or reset, the ball bearing 671 transforms the original sliding friction between the side wall of the clamping frame 62 and the inner wall of the first mounting slot 12 into low-resistance rolling friction, which greatly reduces the frictional resistance between the two and effectively avoids the clamping frame 62 from getting stuck or jammed during movement. This improves the smoothness of the clamping frame 62's back and forth movement and the speed of its action response, ensuring the stable and reliable execution of the clamping component 6's loosening and resetting actions.

[0047] A limiting ring 36 is movably connected to the inner side wall of the third mounting groove 16, and one end of the limiting ring 36 is fixedly connected to the first pulley 35.

[0048] Specifically, the limiting ring 36 is movably installed on the inner side wall of the third mounting groove 16, with one end rigidly fixed to the end face of the first pulley 35. This provides a stable mounting support and rotation fulcrum for the first pulley 35, enabling the first pulley 35 to be rotatably installed in the third mounting groove 16. It also axially positions the first pulley 35, preventing it from axially shifting or radially deviating during rotation, thus ensuring that the drive assembly 3 can reliably transmit the power of the motor 2 to the clamping assembly 6.

[0049] A limiting plate 39 is fixedly connected to the side wall of one end of the third rotating column 61, and one end of the second pulley 38 is fixedly connected to the limiting plate 39.

[0050] Specifically, the diameter of the limiting plate 39 is larger than the tooth tip circle diameter of the second pulley 38, forming an axial retaining edge on the outside of the second pulley 38. When the first synchronous belt 37 is sleeved between the first pulley 35 and the two second pulleys 38 for power transmission, the limiting plate 39 can effectively constrain the axial position of the first synchronous belt 37, preventing the first synchronous belt 37 from slipping off the tooth surface of the second pulley 38, ensuring that the first synchronous belt 37 and the second pulley 38 always maintain a precise meshing transmission state, ensuring that the power of the motor 2 can be stably and continuously transmitted to the third rotating column 61, and providing reliable transmission guarantee for the loosening and resetting action of the clamping assembly 6.

[0051] The first rotating column 51 is fixedly connected to the side wall of the first limiting plate 511, one end of the third pulley 52 is fixedly connected to the first limiting plate 511, and one end of the fourth pulley 54 is fixedly connected to the second limiting plate 541.

[0052] Specifically, the diameters of the first limiting disc 511 and the second limiting disc 541 are both larger than the tooth tip circle diameters of the corresponding third pulley 52 and fourth pulley 54. Axial flanges are formed on the outer sides of the third pulley 52 and the two fourth pulleys 54. When the second synchronous belt 53 is sleeved between the third pulley 52 and the two fourth pulleys 54 for power transmission, the first limiting disc 511 and the second limiting disc 541 can effectively constrain the axial position of the second synchronous belt 53 together, preventing the second synchronous belt 53 from slipping off the tooth surfaces of the third pulley 52 and the fourth pulleys 54. This ensures that the second synchronous belt 53 and each pulley always maintain a precise meshing transmission state, ensuring that the power output by the reducer 4 can be stably and continuously transmitted to the take-up roller 56, providing a reliable transmission guarantee for the smooth winding and replacement of the transparent film 8.

[0053] The upper and lower ends of the main body 11 of the device are fixedly connected to the fixing plate 9 by bolts. One end of the fixing plate 9 is fixedly connected to the side wall of the mounting frame 1 by bolts. The fixing plate 9 completes the fixed connection between the main body 11 of the device and the mounting frame 1.

[0054] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A real-time dust concentration monitoring device for a chemical workshop, comprising a mounting frame (1), characterized in that, The inner wall of the mounting frame (1) is provided with a device body (11). The inner wall of the mounting frame (1) away from the device body (11) is provided with a first mounting groove (12). The inner wall of the first mounting groove (12) is provided with a through groove (13). The mounting frame (1) is provided with a second mounting groove (14) and a third mounting groove (16). The outer wall of the mounting frame (1) is fixedly connected with a motor (2). The output end of the motor (2) is fixedly connected with a drive shaft (21). One end of the drive shaft (21) passes through the inner wall of the third mounting groove (16). The side wall of the drive shaft (21) located inside the third mounting groove (16) is provided with a drive assembly (3). One end of the drive shaft (21) is fixedly connected with a reducer (4). The output end of the reducer (4) is provided with a winding assembly (5). The first mounting groove (12) is provided with a pressing assembly (6) connected by the drive assembly (3). The first mounting groove (12) is provided with a transparent film (8). The clamping assembly (6) includes two third rotating columns (61) movably connected to the inner wall of the third mounting groove (16). A gear (611) is fixedly connected to the side wall of the middle part of the third rotating column (61). A rack (612) is meshed with the side wall of the gear (611). A connecting rod (613) is fixedly connected to the side wall of the rack (612). One end of the connecting rod (613) passes through the through groove (13). The connecting rod (613) is slidably connected to the inner wall of the through groove (13). A clamping frame (62) is fixedly connected to the end of the connecting rod (613) located inside the first mounting groove (12). The upper and lower ends of the clamping frame (62) are fixedly connected to the side wall of the first mounting groove (12). The wall is provided with a fourth mounting groove (63), and the inner wall of the fourth mounting groove (63) is movably connected to a fourth rotating column (631) by a pin. The side walls of the left and right ends of the clamping frame (62) are provided with a fifth mounting groove (64). The inner walls of the upper and lower ends of the fifth mounting groove (64) are provided with a second placement groove (65). The inner wall of the second placement groove (65) is rotatably connected to a fifth rotating column (651). The side wall of the fifth rotating column (651) is movably connected to a rotating cylinder (652). The outer wall of the rotating cylinder (652) is movably connected to a belt (66). The belt (66) is slidably connected to the inner wall of the fifth mounting groove (64).

2. The real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The drive assembly (3) includes a rotating block (31) fixedly connected to the side wall of the drive shaft (21). The side wall of the rotating block (31) is evenly provided with a plurality of first placement slots (32). The bottom wall of the first placement slot (32) is fixedly connected with a first spring (33). One end of the first spring (33) is fixedly connected with a retaining plate (34). The side wall of the rotating block (31) is movably sleeved with a first pulley (35). The inner wall of the first pulley (35) is provided with a retaining groove (351). The outer wall of the first pulley (35) is provided with a first synchronous belt (37). The inner wall of the first synchronous belt (37) is provided with two second pulleys (38). The second pulleys (38) are respectively fixedly connected to the side wall of one end of the third rotating column (61).

3. The real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The winding assembly (5) includes a first rotating column (51) fixedly connected to the output end of the reducer (4). A third pulley (52) is fixedly connected to the side wall of one end of the first rotating column (51). The end of the first rotating column (51) away from the reducer (4) is movably connected to the inner side wall of the third mounting groove (16). A second synchronous belt (53) is movably connected to the side wall of the third pulley (52). Two fourth pulleys (54) are movably connected to the inner wall of the second synchronous belt (53). One end of each fourth pulley (54) is fixedly connected to a second rotating pulley. The second rotating column (55) has one end away from the fourth pulley (54) that passes through the inner wall of the second mounting groove (14). The second rotating column (55) is fixedly connected to the side wall inside the second mounting groove (14) with a take-up roller (56). The take-up roller (56) is located at the upper and lower ends of the main body (11) of the device. The upper and lower ends of the transparent film (8) are fixedly connected to the side wall of the take-up roller (56). A connecting groove (15) is opened in the inner wall of the second mounting groove (14). The transparent film (8) passes through the connecting groove (15).

4. The real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The lower end of the reducer (4) is fixedly connected to a support plate (41), and one end of the support plate (41) is fixedly connected to the inner side wall of the third mounting groove (16).

5. The real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The inner wall of the third mounting groove (16) is fixedly connected to a limiting post (7), and the side wall of the limiting post (7) is movably connected to a slider (71). The lower end of the slider (71) is fixedly connected to a rack (612). The side wall of one end of the limiting post (7) is movably sleeved with a second spring (72). The left and right ends of the second spring (72) are fixedly connected to the side wall of the slider (71) and the inner wall of the third mounting groove (16) respectively. The side walls of the upper and lower ends of the clamping frame (62) are evenly fixedly connected with multiple third springs (68). One end of the third spring (68) is fixedly connected to the inner wall of the first mounting groove (12). The third spring (68) and the fourth mounting groove (63) are located on the front and rear sides of the clamping frame (62) respectively.

6. The real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The left and right ends of the clamping frame (62) are each provided with a plurality of sixth mounting slots (67). The inner wall of the sixth mounting slot (67) is movably connected with a ball (671), and the ball (671) is movably connected to the inner wall of the first mounting slot (12).

7. The real-time dust concentration monitoring device for a chemical workshop according to claim 2, characterized in that, The inner wall of the third mounting groove (16) is movably connected to a limiting ring (36), and one end of the limiting ring (36) is fixedly connected to the first pulley (35).

8. The real-time dust concentration monitoring device for a chemical workshop according to claim 2, characterized in that, A limiting plate (39) is fixedly connected to one end of the side wall of the third rotating column (61), and one end of the second pulley (38) is fixedly connected to the limiting plate (39).

9. The real-time dust concentration monitoring device for a chemical workshop according to claim 3, characterized in that, The first rotating column (51) is fixedly connected to the side wall of the first limiting plate (511), one end of the third pulley (52) is fixedly connected to the first limiting plate (511), and one end of the fourth pulley (54) is fixedly connected to the second limiting plate (541).

10. A real-time dust concentration monitoring device for a chemical workshop according to claim 1, characterized in that, The main body (11) of the device is fixedly connected to a fixing plate (9) by bolts at both the upper and lower ends. One end of the fixing plate (9) is fixedly connected to the side wall of the mounting frame (1) by bolts.

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