Waterproof adjustable explosion-proof operating column

Abstract

The application belongs to the technical field of explosion-proof operating column, and particularly relates to a waterproof adjusting type explosion-proof operating column, which comprises an explosion-proof operating column body, a waterproof box fixedly connected to the explosion-proof operating column body, a humidity sensor fixedly connected to the inner upper surface of the waterproof box, a driving assembly and an oiling assembly arranged in the waterproof box, and a sealing assembly arranged on the driving assembly. When the humidity sensor alarms, the driving assembly drives the sealing assembly to move to the inside of the filtering assembly, and the filtering assembly is sealed and waterproofed. The oiling assembly is used for applying lubricating oil to the surface of the sealing assembly, so that an oil layer is formed between the sealing assembly and the filtering assembly, and the waterproof effect is improved. The position of the sealing plate is adjusted, so that the adjustment and conversion of efficient heat dissipation on sunny days and waterproofing on rainy days are realized, and the aging of the sealing rubber strip caused by high temperature and the attenuation of the waterproof performance are avoided.

Description

Technical Field

[0001] This invention belongs to the field of explosion-proof operating column technology, specifically a waterproof and adjustable explosion-proof operating column. Background Technology

[0002] An explosion-proof operating column is an electrical device specifically designed for explosive environments. It is typically used in places such as petroleum, chemical, and coal mines where flammable and explosive gases and dust are present. In humid and explosive environments with abundant rainfall, the explosion-proof operating column itself has high performance requirements and needs to have both explosion-proof and waterproof functions.

[0003] For example, a patent with publication number CN218450930U discloses an explosion-proof operating column with waterproof function. By setting up a baffle and a vent, when the humidity sensor detects low humidity, i.e., sunny weather, the servo motor is activated. The control rod is driven to move downward by the cooperation of the threaded rod and the control rod. During the downward movement of the control rod, the connecting rod drives the baffle to move away from the operating column housing, i.e., away from the vent. Then the operating column housing can dissipate heat through the vent. When the humidity sensor detects high humidity, i.e., rainy weather, the servo motor is activated in reverse. The same principle is used to close the vent. The rubber gasket between the baffle and the waterproof housing is used to enhance the seal and improve the waterproof effect.

[0004] When the existing explosion-proof operating column is outdoors in a windy and sandy area, the airflow carries sand and dust into the interior of the waterproof box. The sand and dust adhere to the surface of the sealing plate, and the wear of the sealing plate and the inner wall of the filter frame increases. Over time, the sealing plate will deform, resulting in gaps between the sealing plate and the filter frame, allowing water droplets to pass through the gaps, thus causing a decrease in waterproof performance.

[0005] Therefore, the present invention provides a waterproof, adjustable, explosion-proof operating column. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a waterproof and adjustable explosion-proof operating column, including an explosion-proof operating column body, a waterproof box fixedly connected to the explosion-proof operating column body, a humidity sensor fixedly connected to the inner upper surface of the waterproof box, a driving component and an oiling component inside the waterproof box, and a sealing component on the driving component. When the humidity sensor alarms, the driving component drives the sealing component to move into the filter component and seals and waterproofs the filter component. The oiling component is used to apply lubricating oil to the surface of the sealing component, thereby forming an oil layer between the sealing component and the filter component, which improves the waterproof effect.

[0008] The driving assembly includes a driven frame slidably connected inside the waterproof tank; the sealing assembly includes a sealing plate rotatably connected inside the driven frame; the oiling assembly includes a sealing pipe fixedly connected inside the waterproof tank, an oil drain frame fixedly connected to the sealing pipe via an oil drain check valve, and an oil brush fixedly connected below the oil drain frame; the filtering assembly includes a filter frame fixedly connected to the side wall of the waterproof tank, an exhaust port provided on the inner wall of the filter frame; the sealing plate and the filter frame are slidably connected internally, and the size of the sealing plate matches the size of the inner wall of the filter frame.

[0009] The drive assembly also includes a bidirectional lead screw rotatably connected to the inner wall of the waterproof box. A movable frame is threaded onto the bidirectional lead screw, and a positioning rod is slidably connected to the inner wall of the movable frame. The positioning rod is fixedly connected to the inner wall of the waterproof box. One end of the bidirectional lead screw is fixedly connected to the output end of the motor. The motor is fixedly connected to the outer wall of the waterproof box. One end of each of the two bidirectional lead screws is fixedly connected to a pulley, and the two pulleys are connected by a belt drive.

[0010] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0011] The drive assembly also includes a bidirectional lead screw rotatably connected to the inner wall of the waterproof box. A movable frame is threaded onto the bidirectional lead screw, and a positioning rod is slidably connected to the inner wall of the movable frame. The positioning rod is fixedly connected to the inner wall of the waterproof box. One end of the bidirectional lead screw is fixedly connected to the output end of the motor. The motor is fixedly connected to the outer wall of the waterproof box. One end of each of the two bidirectional lead screws is fixedly connected to a pulley, and the two pulleys are connected by a belt drive.

[0012] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0013] A limiting rod is fixedly connected inside the movable frame, and a fixing rod is fixedly connected to the back of the sealing plate. A limiting groove is provided on the fixing rod, and the limiting groove and one end of the limiting rod are slidably connected.

[0014] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0015] The limiting groove includes a transverse section, a spiral section on one side of the transverse section, a reset section on one side of the spiral section, and a turning section on one side of the reset section. The groove depth of the spiral section is less than the groove depth of the reset section. The limiting rod is made of plastic material.

[0016] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0017] The oiling assembly also includes an oil inlet check valve fixedly connected to the sealing pipe. One end of the oil inlet check valve is fixedly connected to an oil tank, which is fixedly connected to the inner wall of the waterproof tank. A piston rod is slidably connected inside the oil tank.

[0018] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0019] A conical block is fixedly connected to one end of the piston rod, and a baffle is fixedly connected to one side of the conical block. The radius of the baffle is larger than the radius of the conical block. A through hole is provided on the conical block, and the size of the through hole matches the size of the first magnetic block.

[0020] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0021] A spring telescopic rod is fixedly connected inside the movable frame. A second magnetic block is fixedly connected to the movable end of the spring telescopic rod. A first magnetic block is fixedly connected to one end of the sealing tube. The first and second magnetic blocks repel each other magnetically.

[0022] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0023] An extrusion rod is fixedly connected inside the filter frame, and a protrusion is fixedly connected to one end of the sealing plate. One side of the protrusion is in contact with one end of the extrusion rod.

[0024] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0025] A waterproof door is rotatably connected to the outside of the waterproof box. Sealing rings are respectively provided on the inner wall of the waterproof door and the surface of the sealing plate. A drain outlet is provided on the inner wall of the waterproof box.

[0026] A further description of the waterproof, adjustable, explosion-proof operating column device described above:

[0027] A first spring is fixedly connected between the filter frame and the inner wall of the waterproof box, and a second spring is fixedly connected between the driven frame and the sealing plate.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. The waterproof and adjustable explosion-proof operating column of this invention, by setting a sealing plate and a filter frame, allows the sealing plate to slide inside the filter frame on sunny days, moving it to the rear of the exhaust vent to form a heat dissipation channel. External airflow can then enter the interior of the waterproof box and the explosion-proof operating column body for heat dissipation. When humidity is high, the sealing plate slides inside the filter frame, moving it to the front of the exhaust vent, blocking it. Rainwater and moisture are then blocked by the sealing plate, and accumulated rainwater can be discharged through the drain. This device, by adjusting the position of the sealing plate, can achieve efficient heat dissipation on sunny days and waterproofing on rainy days, avoiding the problem of aging of the sealing strip due to high temperatures, which leads to a decrease in waterproof performance.

[0030] 2. The waterproof and adjustable explosion-proof operating column of this invention is equipped with an oiling component. When the sealing plate is ready to perform a waterproof sealing operation on the filter frame, the moving frame moves in the upper limit groove of the fixed rod. At the same time, the moving frame drives the piston rod to move in the sealing tube, causing the piston rod to push and send the lubricating oil inside it into the oil draining frame through the oil draining one-way valve. The oil draining frame then evenly distributes the lubricating oil on the oil brush, which contacts the sealing plate. Subsequently, the sealing plate is driven to rotate, which evenly coats the circumference of the sealing plate with lubricating oil. The lubricating oil and water are immiscible, forming a waterproof oil film between the sealing plate and the filter frame, thereby improving the waterproof effect of the sealing plate. At the same time, the lubricating oil reduces the friction between the sealing plate and the filter frame, avoiding wear caused by long-term sliding of the sealing plate, which could lead to deformation of the sealing plate and gaps between the sealing plate and the filter frame, thus reducing the waterproof performance. Furthermore, the dual protection of physical sealing and oil film isolation ensures that even if the sealing surface is slightly deformed, the waterproof performance can still be compensated by the oil film. In addition, the device can automatically perform the oiling operation on the sealing plate without manual operation, reducing the workload of the workers.

[0031] 3. The waterproof, adjustable, explosion-proof operating column of this invention, by setting up an oil protrusion and a pressing rod, when the sealing plate rotates, the sealing plate drives the protrusion to rotate synchronously, and the protrusion presses the pressing rod, causing the pressing rod to move the filter frame. Then, the pressing rod disengages from the protrusion, and the filter frame is reset by the first spring. Repeating the above operation drives the filter frame to vibrate back and forth, which can clean the dust in the heat dissipation holes, exhaust vents, and inner wall of the filter frame. Then, the sealing plate enters and generates a propulsive airflow, which can clean the dust. This device can automatically clean up the dust accumulation, avoid the increase in thermal resistance caused by the blockage of the heat dissipation holes, ensure the airflow circulation efficiency, and at the same time prevent the dust from accumulating in the filter frame, causing the sealing plate to move and get stuck, thereby affecting the overall waterproof effect of the device itself. Attached Figure Description

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a structural schematic diagram of the waterproof box and explosion-proof operating column body of the present invention;

[0035] Figure 3 This is a cross-sectional view of the internal structure of the waterproof box of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the drive assembly, sealing assembly, oiling assembly and filter assembly of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the filter frame and sealing plate of the present invention;

[0038] Figure 6 This is the present invention. Figure 5 A magnified view of a section at point A in the middle;

[0039] Figure 7 This is the present invention. Figure 5 A magnified view of a section at point B in the middle;

[0040] Figure 8 This is an exploded view of the sealing plate and extrusion rod of the present invention;

[0041] Figure 9 This is a schematic diagram of the structure of the filter frame of the present invention;

[0042] Figure 10 This is a schematic diagram of the oiling component of the present invention.

[0043] In the diagram: 1. Explosion-proof operating column body; 2. Waterproof box; 21. Waterproof door; 22. Drain outlet; 3. Filter assembly; 31. Filter frame; 32. Extrusion rod; 33. Exhaust outlet; 4. Drive assembly; 41. Two-way lead screw; 42. Positioning rod; 43. Moving frame; 431. Spring telescopic rod; 432. First magnetic block; 433. Limiting rod; 44. Driven frame; 45. Pulley; 46. Motor; 5. Oiling assembly; 51. Oil tank; 52. Sealing pipe; 52 1. Inlet check valve; 522. Outlet check valve; 523. Second magnetic block; 53. Outlet rack; 531. Oil brush; 54. Piston rod; 541. Conical block; 542. Baffle; 543. Through hole; 6. Sealing assembly; 61. Sealing plate; 62. Fixing rod; 63. Limiting groove; 631. Transverse section; 632. Spiral section; 633. Reset section; 634. Rotating section; 64. Protrusion; 7. First spring; 8. Second spring; 9. Humidity sensor. Detailed Implementation

[0044] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0045] like Figures 1 to 10 As shown, the present invention provides a waterproof adjustable explosion-proof operating column, including an explosion-proof operating column body 1, a waterproof box 2 fixedly connected to the explosion-proof operating column body 1, a humidity sensor 9 fixedly connected to the inner upper surface of the waterproof box 2, a drive assembly 4 and an oiling assembly 5 arranged inside the waterproof box 2, and a sealing assembly 6 arranged on the drive assembly 4. When the humidity sensor 9 alarms, the drive assembly 4 drives the sealing assembly 6 to move into the filter assembly 3 and seals and waterproofs the filter assembly 3. The oiling assembly 5 is used to apply lubricating oil to the surface of the sealing assembly 6, thereby forming an oil layer between the sealing assembly 6 and the filter assembly 3, which improves the waterproof effect.

[0046] The drive assembly 4 includes a driven frame 44 slidably connected inside the waterproof box 2; the sealing assembly 6 includes a sealing plate 61 rotatably connected inside the driven frame 44; the oiling assembly 5 includes a sealing pipe 52 fixedly connected inside the waterproof box 2; an oil drain frame 53 is fixedly connected to the sealing pipe 52 via an oil drain check valve 522; an oil brush 531 is fixedly connected below the oil drain frame 53; the filter assembly 3 includes a filter frame 31 fixedly connected to the side wall of the waterproof box 2; an exhaust port 33 is provided on the inner wall of the filter frame 31; the sealing plate 61 and the filter frame 31 are slidably connected inside, and the size of the sealing plate 61 matches the size of the inner wall of the filter frame 31; a waterproof door 21 is rotatably connected to the outside of the waterproof box 2; a sealing ring is provided on the inner wall of the waterproof door 21 and the surface of the sealing plate 61; and a drain port 22 is provided on the inner wall of the waterproof box 2.

[0047] Specifically, in humid and explosive environments with abundant rainfall, the performance requirements for explosion-proof operating columns are high, necessitating both explosion-proof and waterproof functions. Existing waterproof explosion-proof operating columns employ a waterproof box 2 encased on the outside to enhance their waterproofing effect. However, the excessive sealing of the waterproof box 2 causes the heat generated during operation of the explosion-proof operating column to accumulate inside, making it difficult to dissipate and resulting in poor heat dissipation. This leads to high temperatures inside the waterproof box 2, which accelerates the aging of the sealing strip. Aged sealing strips become unable to achieve a sealing operation, thus causing a decline in waterproofing performance.

[0048] Specifically, in order to solve the above problems, this device uses the following method: the waterproof box 2 is installed on the outside of the explosion-proof operating column, and then the waterproof door 21 is closed to seal the waterproof box 2.

[0049] When the outside is sunny, the driven driven frame 44 can drive the sealing plate 61 to move away from the filter holes of the filter frame 31. The sealing plate 61 slides inside the filter frame 31 and slides to the rear of the exhaust port 33, so that the exhaust port 33 opens. Then the outside airflow can enter the exhaust port 33 through the filter holes on the filter frame 31, and finally the exhaust port 33 flows into the interior of the waterproof box 2, thus realizing the heat dissipation operation.

[0050] When the external humidity is high and the humidity sensor 9 is activated, the humidity sensor 9 alarms and drives the driven frame 44 to reset and slide through the drive assembly 4. The driven frame 44 drives the sealing plate 61 to slide inside the filter frame 31. The sealing plate 61 slides towards the filter holes of the filter frame 31 and blocks the exhaust port 33. At this time, the external humidity is blocked by the sealing plate 61 and the sealing ring on its surface, so that the humidity or rainwater is discharged to the outside of the waterproof box 2 through the drain port 22.

[0051] This device allows for efficient heat dissipation in sunny weather and waterproofing in rainy weather by adjusting the position of the sealing plate 61, thus avoiding the problem of aging of the sealing strip due to high temperatures, which would lead to a decrease in waterproof performance.

[0052] like Figure 4 As shown, the drive assembly 4 also includes a bidirectional lead screw 41 rotatably connected to the inner wall of the waterproof box 2. A movable frame 43 is threadedly connected to the bidirectional lead screw 41. A positioning rod 42 is slidably connected to the inner wall of the movable frame 43. The positioning rod 42 is fixedly connected to the inner wall of the waterproof box 2. One end of the bidirectional lead screw 41 is fixedly connected to the output end of the motor 46. The motor 46 is fixedly connected to the outer wall of the waterproof box 2. One end of each of the two bidirectional lead screws 41 is fixedly connected to a pulley 45. The two pulleys 45 are connected by a belt drive.

[0053] Specifically, when the external humidity is high, the humidity sensor 9 senses and activates the motor 46 through the controller inside the waterproof box 2. The motor 46 activates the bidirectional lead screw 41 to rotate. The bidirectional lead screw 41 drives another bidirectional lead screw 41 to rotate synchronously through the cooperation of the belt and pulley 45. This causes the movable frame 43 on the bidirectional lead screw 41 to slide on the positioning rod 42. The movable frame 43 moves and contacts the driven frame 44, which in turn pushes the sealing plate 61 to move.

[0054] like Figure 5 and Figure 8 As shown, a limiting rod 433 is fixedly connected inside the movable frame 43, and a fixing rod 62 is fixedly connected to the back of the sealing plate 61. A limiting groove 63 is provided on the fixing rod 62. The limiting groove 63 and one end of the limiting rod 433 are slidably connected. The limiting groove 63 includes a transverse section 631, a spiral section 632 is provided on one side of the transverse section 631, a reset section 633 is provided on one side of the spiral section 632, and a turning section is provided on one side of the reset section 633. The groove depth of the spiral section 632 is less than the groove depth of the reset section 633. The limiting rod 433 is made of plastic material.

[0055] like Figure 10As shown, the oiling assembly 5 also includes an oil inlet check valve 521 fixedly connected to the sealing pipe 52. One end of the oil inlet check valve 521 is fixedly connected to an oil tank 51. The oil tank 51 is fixedly connected to the inner wall of the waterproof tank 2. A piston rod 54 is slidably connected inside the oil tank 51.

[0056] like Figure 6 and Figure 10 As shown, a conical block 541 is fixedly connected to one end of the piston rod 54, and a baffle 542 is fixedly connected to one side of the conical block 541. The radius of the baffle 542 is larger than the radius of the conical block 541. A through hole 543 is provided on the conical block 541, and the size of the through hole 543 matches the size of the first magnetic block 432.

[0057] like Figure 6 As shown, a spring telescopic rod 431 is fixedly connected inside the movable frame 43. A second magnetic block 523 is fixedly connected to the movable end of the spring telescopic rod 431. A first magnetic block 432 is fixedly connected to one end of the sealing tube 52. The magnetism of the first magnetic block 432 and the second magnetic block 523 repel each other.

[0058] Specifically, when in an environment with a lot of external dust, the airflow carries dust into the interior of the waterproof box 2. The dust adheres to the surface of the sealing plate 61, and the wear of the sealing plate 61 and the inner wall of the filter frame 31 increases, causing the sealing plate 61 to deform. This results in a gap between the sealing plate 61 and the filter frame 31, allowing water droplets to pass through the gap, thus causing a decrease in waterproof performance.

[0059] To avoid the aforementioned technical problems, this device is used as follows: When the sealing plate 61 is required to waterproof the filter frame 31, the sealing plate 61 is located directly below the oil brush 531, and can simultaneously drive the movable frame 43 to slide. The movable frame 43 drives the limiting rod 433 to slide in the limiting groove 63. When the limiting rod 433 slides in the transverse section 631 of the limiting groove 63, the movable frame 43 and the driven frame 44 do not contact each other. At this time, the movable frame 43 drives the first magnetic block 432 to move, the first magnetic block 432 pushes the conical block 541 to move, and the conical block 541 drives the piston rod 54 to slide into the sealing tube 52, so that the oil inside the sealing tube 52 flows to the oil drain frame 53 through the drain one-way valve. The oil drain frame 53 is provided with oil drain ports arranged in an equidistant array below, and the oil flows evenly to the surface of the oil brush 531 through the oil drain ports, so that the surface of the oil brush 531 is covered with lubricating oil.

[0060] Subsequently, the limiting rod 433 moves from the transverse section 631 to the spiral section 632. At this time, the first magnetic block 432 moves above the second magnetic block 523. Then, the second magnetic block 523 repels the first magnetic block 432, causing the first magnetic block 432 to squeeze the spring telescopic rod 431 and move away from the second magnetic block 523. At this time, the first magnetic block 432 disengages from the conical block 541 and slides on the sealing tube 52. Therefore, when the limiting rod 433 slides in the spiral section 632, the first magnetic block 432 will not push the piston rod 54 to move. At the same time, the fixing rod 62 drives the sealing plate 61 to rotate synchronously, so that the sealing plate 61 and the oil brush 531 come into contact. The oil brush 531 can evenly apply the lubricating oil to the surface of the sealing plate 61, so that an oil layer is formed between the sealing plates 61.

[0061] When the limit rod 433 moves from the spiral section 632 to the reset section 633, the moving frame 43 and the driven frame 44 come into contact on one side. Then, when the moving frame 43 moves, it squeezes the driven frame 44 to slide synchronously. The driven frame 44 drives the sealing plate 61 to slide in the filter frame 31, so that an oil film is formed between the filter frame 31 and the sealing plate 61 to improve the waterproof effect.

[0062] When the movable frame 43 resets, it drives the limiting rod 433 to slide in the reset section 633. When the limiting rod 433 moves from the reset section 633 to the rotating section 634, the first spring 7 drives the fixed rod 62 to reset, so that the limiting rod 433 resets to the transverse section 631. Then the movable frame 43 drives the limiting rod 433 to reset and slide. The limiting rod 433 is limited in the transverse section 631 and drives the fixed rod 62 to reset. At the same time, when the movable frame 43 drives the first magnetic block 432 to reset and move to the second magnetic block 523, the first magnetic block 432 is limited by the baffle 542. The first magnetic block 432 pushes the baffle 542 to reset and slide. The baffle 542 drives the piston rod 54 to slide inside the sealing tube 52, so that the oil inlet check valve 521 opens. The oil inlet check valve 521 draws the lubricating oil in the oil tank 51 into the sealing tube 52.

[0063] This device improves the waterproofing effect of the sealing plate 61 by applying lubricating oil to the sealing plate 61. The lubricating oil and water are immiscible, forming a waterproof oil film between the sealing plate 61 and the filter frame 31. At the same time, the lubricating oil reduces the friction between the sealing plate 61 and the filter frame 31, avoiding wear caused by long-term sliding of the sealing plate 61, which could lead to deformation of the sealing plate 61 and gaps between the sealing plate 61 and the filter frame 31, thus reducing the waterproofing performance. Furthermore, the dual protection of physical sealing and oil film isolation ensures that even if the sealing surface is slightly deformed, the waterproofing performance can be compensated by the oil film. In addition, the device can automatically apply oil to the sealing plate 61 without manual operation, reducing the workload of the workers.

[0064] like Figure 5 and Figure 8As shown, a compression rod 32 is fixedly connected inside the filter frame 31, and a protrusion 64 is fixedly connected to one end of the sealing plate 61. One side of the protrusion 64 is in contact with one end of the compression rod 32.

[0065] like Figure 5 As shown, a first spring 7 is fixedly connected between the filter frame 31 and the inner wall of the waterproof box 2, and a second spring 8 is fixedly connected between the driven frame 44 and the sealing plate 61.

[0066] Specifically, when the sealing plate 61 rotates, it drives the protrusion 64 to rotate. The protrusion 64 contacts the extrusion rod 32 and extrudes the extrusion rod 32, causing the extrusion rod 32 to drive the filter frame 31 to slide outward of the waterproof box 2. When the extrusion rod 32 disengages from the protrusion 64, the filter frame 31 is reset under the action of the second spring 8. This reciprocating motion drives the filter frame 31 to vibrate back and forth, which can clean the dust in the heat dissipation holes, exhaust vents 33 and the inner wall of the filter frame 31. Then, the sealing plate 61 enters and generates a propulsive airflow, which can clean the dust.

[0067] This device can automatically clean up dust accumulation, avoid increased thermal resistance caused by blocked heat dissipation holes, ensure airflow circulation efficiency, and prevent dust from accumulating in the filter frame 31, which could cause the sealing plate 61 to become stuck and affect the overall waterproof performance of the device.

[0068] Working principle: When the outside is sunny, the sealing plate 61 is behind the exhaust port 33, the exhaust port 33 is opened, and then the outside airflow can enter the exhaust port 33 through the filter holes on the filter frame 31. Finally, the exhaust port 33 flows into the interior of the waterproof box 2, thus realizing heat dissipation.

[0069] When the external humidity is high and the humidity sensor 9 is activated, the humidity sensor 9 senses the humidity and activates the motor 46 through the controller inside the waterproof box 2. The motor 46 activates the bidirectional lead screw 41 to rotate. The bidirectional lead screw 41 drives another bidirectional lead screw 41 to rotate synchronously through the cooperation of the belt and pulley 45.

[0070] When the sealing plate 61 is required to waterproof the filter frame 31, the sealing plate 61 is directly below the oil brush 531. At the same time, it can drive the moving frame 43 to slide. The moving frame 43 drives the limiting rod 433 to slide in the limiting groove 63. When the limiting rod 433 slides in the transverse section 631 of the limiting groove 63, the moving frame 43 and the driven frame 44 do not contact each other. At this time, the moving frame 43 drives the first magnetic block 432 to move. The first magnetic block 432 pushes the conical block 541 to move. The conical block 541 drives the piston rod 54 to slide into the sealing tube 52, so that the oil inside the sealing tube 52 flows to the oil drain frame 53 through the drain one-way valve. The oil drain frame 53 is provided with oil drain ports arranged in an equidistant array below. The oil flows evenly to the surface of the oil brush 531 through the oil drain ports, so that the surface of the oil brush 531 is covered with lubricating oil.

[0071] Subsequently, the limiting rod 433 moves from the transverse section 631 to the spiral section 632. At this time, the first magnetic block 432 moves above the second magnetic block 523. Then, the second magnetic block 523 repels the first magnetic block 432, causing the first magnetic block 432 to squeeze the spring telescopic rod 431 and move away from the second magnetic block 523. At this time, the first magnetic block 432 disengages from the conical block 541 and slides on the sealing tube 52. Therefore, when the limiting rod 433 slides in the spiral section 632, the first magnetic block 432 will not push the piston rod 54 to move. At the same time, the fixing rod 62 drives the sealing plate 61 to rotate synchronously, so that the sealing plate 61 and the oil brush 531 come into contact. The oil brush 531 can evenly apply the lubricating oil to the surface of the sealing plate 61, so that an oil layer is formed between the sealing plates 61.

[0072] When the limit rod 433 moves from the spiral section 632 to the reset section 633, the moving frame 43 and the driven frame 44 come into contact on one side. Then, when the moving frame 43 moves, it squeezes the driven frame 44 to slide synchronously. The driven frame 44 drives the sealing plate 61 to slide in the filter frame 31, so that an oil film is formed between the filter frame 31 and the sealing plate 61 to improve the waterproof effect.

[0073] When the movable frame 43 is reset, the movable frame 43 drives the limiting rod 433 to slide in the reset section 633. When the limiting rod 433 moves from the reset section 633 to the rotating section 634, the first spring 7 drives the fixed rod 62 to reset, so that the limiting rod 433 is reset to the transverse section 631. Then the movable frame 43 drives the limiting rod 433 to reset and slide. The limiting rod 433 is limited in the transverse section 631 and drives the fixed rod 62 to reset. At the same time, when the movable frame 43 drives the first magnetic block 432 to reset and move to the second magnetic block 523, the first magnetic block 432 is limited by the baffle 542. The first magnetic block 432 pushes the baffle 542 to reset and slide. The baffle 542 drives the piston rod 54 to slide inside the sealing tube 52, so that the oil inlet check valve 521 is opened. The oil inlet check valve 521 draws the lubricating oil in the oil tank 51 to the sealing tube 52.

[0074] When the sealing plate 61 rotates, it drives the protrusion 64 to rotate. The protrusion 64 contacts the extrusion rod 32 and extrudes the extrusion rod 32, causing the extrusion rod 32 to drive the filter frame 31 to slide outward of the waterproof box 2. When the extrusion rod 32 disengages from the protrusion 64, the filter frame 31 is reset under the action of the second spring 8. This reciprocating motion drives the filter frame 31 to vibrate back and forth, which can clean the dust from the heat dissipation holes, exhaust vents 33 and the inner wall of the filter frame 31. Then, the sealing plate 61 enters and generates a propulsive airflow, which can clean the dust.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof, adjustable, explosion-proof operating column, characterized in that: The device includes an explosion-proof operating column body (1), on which a waterproof box (2) is fixedly connected. A humidity sensor (9) is fixedly connected to the upper inner surface of the waterproof box (2). Inside the waterproof box (2), there is a drive assembly (4) and an oiling assembly (5). A sealing assembly (6) is provided on the drive assembly (4). When the humidity sensor (9) alarms, the drive assembly (4) drives the sealing assembly (6) to move into the filter assembly (3) and seals and waterproofs the filter assembly (3). The oiling assembly (5) is used to apply lubricating oil to the surface of the sealing assembly (6) so that an oil layer can be formed between the sealing assembly (6) and the filter assembly (3). The drive assembly (4) includes a driven frame (44) slidably connected inside the waterproof box (2). The sealing assembly (6) includes a sealing plate (61) rotatably connected inside the driven frame (44). The oiling assembly (5) includes a sealing tube (52) fixedly connected inside the waterproof box (2). An oil draining frame (53) is fixedly connected to the sealing tube (52) via an oil draining check valve (522). An oil brush (531) is fixedly connected below the oil draining frame (53). The filter assembly (3) includes a filter frame (31) fixedly connected to the side wall of the waterproof box (2). An exhaust port (33) is provided on the inner wall of the filter frame (31). The sealing plate (61) and the filter frame (31) are slidably connected inside, and the size of the sealing plate (61) matches the size of the inner wall of the filter frame (31).

2. The waterproof, adjustable, explosion-proof operating column according to claim 1, characterized in that: The drive assembly (4) further includes a bidirectional lead screw (41) rotatably connected to the inner wall of the waterproof box (2). A movable frame (43) is threaded onto the bidirectional lead screw (41). A positioning rod (42) is slidably connected to the inner wall of the movable frame (43). The positioning rod (42) is fixedly connected to the inner wall of the waterproof box (2). One end of the bidirectional lead screw (41) is fixedly connected to the output end of the motor (46). The motor (46) is fixedly connected to the outer wall of the waterproof box (2). One end of each of the two bidirectional lead screws (41) is fixedly connected to a pulley (45). The two pulleys (45) are connected by a belt drive.

3. The waterproof, adjustable, explosion-proof operating column according to claim 2, characterized in that: The movable frame (43) is internally fixedly connected to a limiting rod (433), and a fixing rod (62) is fixedly connected to the back of the sealing plate (61). A limiting groove (63) is provided on the fixing rod (62), and one end of the limiting groove (63) and the limiting rod (433) are slidably connected.

4. The waterproof, adjustable, explosion-proof operating column according to claim 3, characterized in that: The limiting groove (63) includes a transverse section (631), a spiral section (632) is provided on one side of the transverse section (631), a reset section (633) is provided on one side of the spiral section (632), and a turning section is provided on one side of the reset section (633). The groove depth of the spiral section (632) is less than the groove depth of the reset section (633), and the limiting rod (433) is made of plastic material.

5. A waterproof, adjustable, explosion-proof operating column according to claim 4, characterized in that: The oiling assembly (5) also includes an oil inlet check valve (521) fixedly connected to the sealing pipe (52). One end of the oil inlet check valve (521) is fixedly connected to an oil tank (51). The oil tank (51) is fixedly connected to the inner wall of the waterproof box (2). A piston rod (54) is slidably connected inside the oil tank (51).

6. A waterproof, adjustable, explosion-proof operating column according to claim 5, characterized in that: One end of the piston rod (54) is fixedly connected to a conical block (541), and one side of the conical block (541) is fixedly connected to a baffle (542). The radius of the baffle (542) is larger than the radius of the conical block (541). A through hole (543) is provided on the conical block (541). One end of the sealing tube (52) is fixedly connected to a first magnetic block (432). The size of the through hole (543) matches the size of the first magnetic block (432).

7. A waterproof, adjustable, explosion-proof operating column according to claim 6, characterized in that: The movable frame (43) is internally fixedly connected to a spring telescopic rod (431), and the movable end of the spring telescopic rod (431) is fixedly connected to a second magnetic block (523). The magnetism of the first magnetic block (432) and the second magnetic block (523) repel each other.

8. A waterproof, adjustable, explosion-proof operating column according to claim 7, characterized in that: The filter frame (31) is internally fixedly connected to a compression rod (32), and a protrusion (64) is fixedly connected to one end of the sealing plate (61). One side of the protrusion (64) is in contact with one end of the compression rod (32).

9. A waterproof, adjustable, explosion-proof operating column according to claim 1, characterized in that: The waterproof box (2) is rotatably connected to a waterproof door (21). The inner wall of the waterproof door (21) and the surface of the sealing plate (61) are respectively provided with sealing rings. The inner wall of the waterproof box (2) is provided with a drain outlet (22).

10. A waterproof, adjustable, explosion-proof operating column according to claim 1, characterized in that: A first spring (7) is fixedly connected between the filter frame (31) and the inner wall of the waterproof box (2), and a second spring (8) is fixedly connected between the driven frame (44) and the sealing plate (61).

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