Tail gas filtering device for hydrogen fluoride production

Abstract

The invention discloses a tail gas filtering device for hydrogen fluoride production, and relates to the technical field of hydrogen fluoride production, the tail gas filtering device comprises a transmission mechanism, a driving mechanism for driving a valve is arranged on one side of the transmission mechanism, and two filtering mechanisms for filtering tail gas are arranged above the transmission mechanism; according to the invention, through the cooperation of the driving mechanism, the transmission mechanism and the filtering mechanisms, the switching between the two filtering mechanisms is realized, the situation that when the filtering mechanisms are saturated, the equipment needs to be closed and activated carbon needs to be replaced is avoided, and the filtering efficiency is improved; a cam is driven to rotate through cooperation of a rotating rod, a gear rod, a second one-way bearing and a mounting rod, and a sealing plate is driven to move through cooperation of the cam and a first spring, so that the sealing plate is separated from the activated carbon filtering equipment, and the activated carbon filtering equipment is conveniently moved out of the filtering box.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fluoride production, in particular to a tail gas filtering device for hydrogen fluoride production. Background Art

[0002] Hydrogen fluoride is a colorless gas with a pungent odor, mainly composed of fluorine and hydrogen. It is widely used in industrial production, mainly due to its chemical activity. It is widely used in reactions such as nucleophilic substitution, electrophilic addition and ring-opening fluorination, such as in organic synthesis and fluoride manufacturing.

[0003] At present, exhaust gas is generated during the production process of hydrogen fluoride. The exhaust gas contains harmful gases, which are easy to cause damage to the environment and human body. It needs to be filtered and purified before it can be released. An activated carbon filter device is usually used for filtration. However, the activated carbon filter device will become saturated during long-term use. At this time, the device needs to be shut down and the activated carbon needs to be replaced, which affects the filtration efficiency. In view of the above problems, the inventor proposes an exhaust gas filtration device for hydrogen fluoride production to solve the above problems. Summary of the invention

[0004] In order to solve the problem of needing to shut down the equipment to replace the activated carbon; the purpose of the present invention is to provide a tail gas filtering device for hydrogen fluoride production.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: an exhaust gas filtering device for hydrogen fluoride production, comprising a transmission mechanism, a driving mechanism for driving a valve is provided on one side of the transmission mechanism, two filtering mechanisms for filtering exhaust gas are provided above the transmission mechanism, and a transmission mechanism for transmitting the driving mechanism is provided between the two filtering mechanisms.

[0006] Preferably, the transmission mechanism includes a transmission pipe, two connecting pipes are fixedly installed on the outer surface of the transmission pipe, and the ends of the two connecting pipes away from the transmission pipe are respectively fixedly connected to the filtering mechanism, two ball valves are rotatably installed in the transmission pipe, two rotating rods are fixedly installed on the outer surface of the ball valve, and the ends of the rotating rods away from the ball valves rotate through the transmission pipe and are rotatably arranged inside the driving mechanism, and the end of the rotating rods away from the ball valves is fixedly installed with a No. 1 gear.

[0007] Preferably, the driving mechanism includes a mounting platform, and the mounting platform is located on one side of the transmission tube, and two rotating rods are rotatably installed on the side of the mounting platform close to the transmission tube, and a No. 2 gear is fixedly installed on the end of the rotating rod away from the transmission tube, and a tooth plate is slidably installed on the upper surface of the mounting platform, and the tooth plate is movably engaged with the two No. 1 gears and the two No. 2 gears, and a sliding bar is fixedly installed on the lower surface of the tooth plate, and the sliding bar is slidably arranged inside the mounting platform, and an electric cylinder is fixedly installed on the side of the mounting platform, and an end of the electric cylinder output shaft close to the mounting platform is fixedly connected to the sliding bar.

[0008] Preferably, the filtering mechanism includes a filter box, the two filter boxes are located directly above the transmission pipe, and the ends of the two connecting pipes away from the transmission pipe are fixedly connected to the two filter boxes respectively, and two rotating plates are rotatably installed on the side of the filter box away from the mounting platform, and the rotating plate is located on the top of the upper rotating shaft and a first bevel gear is fixedly installed, and the first bevel gear is rotatably arranged inside the filter box, and a cross bar is rotatably installed above the side of the filter box close to the rotating plate, and second bevel gears are fixedly installed on both ends of the outer surface of the cross bar, and the second bevel gear is meshed with the first bevel gear.

[0009] Preferably, two sealing plates are slidably installed in the filter box, two sliders are fixedly installed on both sides of the sealing plate, and the sliders are slidably arranged inside the filter box, a No. 1 spring is fixedly installed on the upper surface of the slider, and the end of the No. 1 spring away from the slider is fixedly connected to the inside of the filter box, mounting rods are rotatably installed on the upper and lower sides of the filter box, and the two mounting rods are driven by synchronous wheels and synchronous belts, and the mounting rod located above and the cross bar are driven by synchronous wheels and synchronous belts, cams are fixedly installed on the outer surfaces of both ends of the mounting rods, and the outer surfaces of the cams are in contact with the sealing plates.

[0010] Preferably, a mobile frame is slidably installed in the filter box, and two mounting frames are slidably installed in a side of the filter box away from the rotating plate, connecting bars are rotatably installed in the upper and lower ends of the mounting frames, and the end of the connecting bar away from the mounting frame is rotatably connected to the mobile frame, a transmission rod is rotatably installed in the side of the filter box away from the rotating plate, a driving plate is fixedly installed at one end of the transmission rod close to the rotating plate, and the driving plate is rotatably arranged inside the filter box, and a swing bar is rotatably installed at both ends of the driving plate, a fixed rod is rotatably installed in one end of the swing bar away from the driving plate, and the end of the fixed rod away from the swing bar is fixedly connected to the mounting frame.

[0011] Preferably, an activated carbon filtering device is detachably installed in the movable frame, and the sides of the sealing plate that are close to each other are in movably contact with the upper and lower sides of the activated carbon filtering device, two limit blocks are fixedly installed on both sides of the activated carbon filtering device, and the limit blocks are movably clamped inside the movable frame, a movable block is slidably installed in the movable frame, and the movable block and the limit block are in movably contact, and No. 2 springs are fixedly installed on the sides of the two opposite movable blocks that are away from each other, and one end of the No. 2 spring away from the movable block is fixedly connected to the inside of the filter box.

[0012] Preferably, two vertical rods are rotatably installed in the middle of both sides of the moving frame, a rotating bar is fixedly installed on the top of the vertical rod, a pushing bar is rotatably installed on the end of the rotating bar away from the vertical rod, a guide rod is rotatably installed in the end of the pushing bar away from the rotating bar, and the top of the guide rod is fixedly connected to the moving block, two driving rods are rotatably installed on both sides of the moving frame, and the driving rod is located on the side close to the connecting bar, the driving rod and the vertical rod are transmitted through a synchronous wheel and a synchronous belt, a driving bar is fixedly installed on the top of the driving rod, and the driving bar is rotatably arranged inside the moving frame, two baffles are fixedly installed on the opposite inner walls of the filter box, and the baffles are in movably contact with the outer surfaces of the driving bars.

[0013] Preferably, the transmission mechanism includes a fixed frame, and both sides of the fixed frame are fixedly connected to the two filter boxes respectively, two gear rods are symmetrically installed in the fixed frame, and the two gear rods and the two rotating rods are transmitted through synchronous wheels and synchronous belts, a toothless gear is fixedly installed on the outer surface of one end of the gear rod close to the mounting platform, a No. 1 one-way bearing is symmetrically installed on one side of the fixed frame close to the mounting platform, and the No. 1 one-way bearing and the transmission rod are transmitted through synchronous wheels and synchronous belts, a No. 3 gear is fixedly installed on the end of the No. 1 one-way bearing away from the synchronous wheel, and the No. 3 gear is movably meshed with the toothless gear.

[0014] Preferably, a toothless bevel gear is fixedly installed on the outer surface of the middle part of the gear rod, and a No. 2 one-way bearing is rotatably installed on the side of the fixed frame close to the filter box, and the No. 2 one-way bearing and the mounting rod located below are transmitted through a synchronous wheel and a synchronous belt, and a third bevel gear is fixedly installed on one end of the No. 2 one-way bearing close to the gear rod, and the third bevel gear and the toothless bevel gear are movably meshed.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the driving mechanism, the transmission mechanism and the filtering mechanism are coordinated to realize the switching between the two filtering mechanisms, so as to avoid the need to shut down the equipment and replace the activated carbon when the filtering mechanism is saturated, thereby improving the filtering efficiency.

[0017] 2. In the present invention, the cam is driven to rotate by the cooperation between the rotating rod, the gear rod, the No. 2 one-way bearing and the mounting rod, and the sealing plate is driven to move by the cooperation between the cam and the No. 1 spring, so that the sealing plate and the activated carbon filter device are separated, making it convenient for the activated carbon filter device to be moved out of the filter box.

[0018] 3. In the present invention, the mounting frame is driven to move by the cooperation between the rotating rod, the gear rod, the No. 1 one-way bearing and the transmission rod, and the movement of the mounting frame drives the moving frame to move, and the movement of the moving frame drives the activated carbon filter device to move, so that the activated carbon filter device is moved out of the filter box, which is convenient for replacing the activated carbon filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the transmission mechanism and the driving mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the installation platform of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the filtering mechanism of the present invention.

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the sealing plate of the present invention.

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the filter box of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the mobile frame of the present invention.

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the transmission mechanism of the present invention.

[0029] Fig.10 For the present invention Figure 8 A schematic diagram of the enlarged structure of .

[0030] Fig.11 For the present invention Figure 8 Enlarged schematic diagram of the structure at B.

[0031] In the figure: 1. transmission mechanism; 101. transmission pipe; 102. connecting pipe; 103. ball valve; 104. rotating rod; 105. gear No. 1; 2. driving mechanism; 201. mounting platform; 202. rotating rod; 203. gear No. 2; 204. tooth plate; 205. slide bar; 206. electric cylinder; 3. filtering mechanism; 301. filter box; 302. rotating plate; 303. first bevel gear; 304. cross bar; 305. second bevel gear; 306. mounting rod; 307. cam; 308. sealing plate; 309. slide block; 310. spring No. 1; 311. moving frame; 312. activated carbon filtering equipment ; 313, mounting frame; 314, connecting bar; 315, driving plate; 316, swing bar; 317, transmission rod; 318, fixed rod; 319, limit block; 320, moving block; 321, No. 2 spring; 322, vertical rod; 323, rotating bar; 324, pushing bar; 325, guide rod; 326, driving rod; 327, driving bar; 328, baffle; 4, transmission mechanism; 401, fixing frame; 402, gear rod; 403, missing tooth gear; 404, No. 1 one-way bearing; 405, No. 3 gear; 406, No. 2 one-way bearing; 407, third bevel gear; 408, missing tooth bevel gear. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example: Figure 1-11 As shown, the present invention provides an exhaust gas filtering device for hydrogen fluoride production, including a transmission mechanism 1, a driving mechanism 2 for driving a valve is provided on one side of the transmission mechanism 1, and is used to drive the valve to rotate, two filtering mechanisms 3 for filtering the exhaust gas are provided above the transmission mechanism 1, and are used to filter and purify the exhaust gas, and a transmission mechanism 4 for transmitting the driving mechanism 2 is provided between the two filtering mechanisms 3, and is used to transmit the power of the driving mechanism 2.

[0034] The transmission mechanism 1 includes a transmission pipe 101, two connecting pipes 102 are fixedly installed on the outer surface of the transmission pipe 101, and the ends of the two connecting pipes 102 away from the transmission pipe 101 are respectively fixedly connected to the filtering mechanism 3, two ball valves 103 are rotatably installed in the transmission pipe 101, two rotating rods 104 are fixedly installed on the outer surface of the ball valve 103, and the ends of the rotating rods 104 away from the ball valve 103 rotate through the transmission pipe 101 and are rotatably arranged inside the driving mechanism 2, and the ends of the rotating rods 104 away from the ball valve 103 are fixedly installed with a No. 1 gear 105.

[0035] By adopting the above technical solution, the rotating rod 104 can drive the ball valve 103 to rotate.

[0036] The driving mechanism 2 includes a mounting platform 201, and the mounting platform 201 is located on one side of the transmission tube 101. Two rotating rods 202 are rotatably installed in the side of the mounting platform 201 close to the transmission tube 101, and a number two gear 203 is fixedly installed at one end of the rotating rod 202 away from the transmission tube 101. A tooth plate 204 is slidably installed on the upper surface of the mounting platform 201, and the tooth plate 204 is movably engaged with the two number one gears 105 and the two number two gears 203. A slide bar 205 is fixedly installed on the lower surface of the tooth plate 204, and the slide bar 205 is slidably set inside the mounting platform 201. An electric cylinder 206 is fixedly installed on the side of the mounting platform 201, and the end of the output shaft of the electric cylinder 206 close to the mounting platform 201 is fixedly connected to the slide bar 205.

[0037] By adopting the above technical solution, the tooth plate 204 can drive the rotating rod 202 and the rotating rod 104 to rotate.

[0038] The filtering mechanism 3 includes a filter box 301, and the two filter boxes 301 are located directly above the transmission pipe 101, and the ends of the two connecting pipes 102 away from the transmission pipe 101 are fixedly connected to the two filter boxes 301 respectively, and the filter box 301 is rotatably installed with two rotating plates 302 on the side away from the mounting platform 201, and the rotating plate 302 is located on the top of the upper rotating shaft and a first bevel gear 303 is fixedly installed, and the first bevel gear 303 is rotatably set inside the filter box 301, and a cross bar 304 is rotatably installed above the filter box 301 close to the rotating plate 302. Second bevel gears 305 are fixedly installed at both ends of the outer surface of the cross bar 304, and the second bevel gear 305 is meshed with the first bevel gear 303.

[0039] By adopting the above technical solution, the cross bar 304 can drive the rotating plate 302 to rotate.

[0040] Two sealing plates 308 are slidably installed in the filter box 301, and two sliders 309 are fixedly installed on both sides of the sealing plate 308, and the sliders 309 are slidably set inside the filter box 301, and a No. 1 spring 310 is fixedly installed on the upper surface of the slider 309, and the end of the No. 1 spring 310 away from the slider 309 is fixedly connected to the inside of the filter box 301, and mounting rods 306 are rotatably installed on the upper and lower sides of the filter box 301, and the two mounting rods 306 are driven by synchronous wheels and synchronous belts, and the mounting rod 306 located above and the cross bar 304 are driven by synchronous wheels and synchronous belts, and cams 307 are fixedly installed on the outer surfaces of both ends of the mounting rods 306, and the outer surfaces of the cams 307 are in contact with the sealing plates 308.

[0041] By adopting the above technical solution, the installation rod 306 can drive the sealing plate 308 to move.

[0042] A movable frame 311 is slidably installed in the filter box 301, and two mounting frames 313 are slidably installed in the side of the filter box 301 away from the rotating plate 302. Connecting bars 314 are rotatably installed in the upper and lower ends of the mounting frames 313, and the end of the connecting bar 314 away from the mounting frame 313 is rotatably connected to the movable frame 311, and a transmission rod 317 is rotatably installed in the side of the filter box 301 away from the rotating plate 302, and a driving plate 315 is fixedly installed at one end of the transmission rod 317 close to the rotating plate 302, and the driving plate 315 is rotatably set inside the filter box 301, and swing bars 316 are rotatably installed at both ends of the driving plate 315, and a fixed rod 318 is rotatably installed in the end of the swing bar 316 away from the driving plate 315, and the end of the fixed rod 318 away from the swing bar 316 is fixedly connected to the mounting frame 313.

[0043] By adopting the above technical solution, the transmission rod 317 can drive the moving frame 311 to move.

[0044] An activated carbon filter device 312 is detachably installed in the movable frame 311, and the sides of the sealing plate 308 that are close to each other are in movable contact with the upper and lower sides of the activated carbon filter device 312. Two limit blocks 319 are fixedly installed on both sides of the activated carbon filter device 312, and the limit blocks 319 are movably clamped in the movable frame 311. A movable block 320 is slidably installed in the movable frame 311, and the movable block 320 and the limit block 319 are in movable contact. No. 2 springs 321 are fixedly installed on the sides of the two opposite movable blocks 320 that are away from each other, and the end of the No. 2 spring 321 away from the movable block 320 is fixedly connected to the inside of the filter box 301.

[0045] By adopting the above technical solution, the moving block 320 can limit the activated carbon filtering device 312.

[0046] Two vertical rods 322 are rotatably installed in the middle of both sides of the movable frame 311, and a rotating bar 323 is fixedly installed on the top of the vertical rod 322, and a pushing bar 324 is rotatably installed on the end of the rotating bar 323 away from the vertical rod 322, and a guide rod 325 is rotatably installed in the end of the pushing bar 324 away from the rotating bar 323, and the top of the guide rod 325 is fixedly connected to the movable block 320, and two driving rods 326 are rotatably installed on both sides of the movable frame 311, and the driving rod 326 is located on the side close to the connecting bar 314, and the driving rod 326 and the vertical rod 322 are driven by synchronous wheels and synchronous belts, and a driving bar 327 is fixedly installed on the top of the driving rod 326, and the driving bar 327 is rotatably set inside the movable frame 311, and two baffles 328 are fixedly installed on the opposite inner walls of the filter box 301, and the baffles 328 are in active contact with the outer surfaces of the driving bars 327.

[0047] By adopting the above technical solution, the driving rod 326 can drive the moving block 320 to move.

[0048] The transmission mechanism 4 includes a fixed frame 401, and both sides of the fixed frame 401 are fixedly connected to the two filter boxes 301 respectively. Two gear rods 402 are symmetrically installed in the fixed frame 401, and the two gear rods 402 and the two rotating rods 202 are driven by synchronous wheels and synchronous belts. A toothless gear 403 is fixedly installed on the outer surface of one end of the gear rod 402 close to the mounting platform 201. A No. 1 one-way bearing 404 is symmetrically installed in one side of the fixed frame 401 close to the mounting platform 201. Since the No. 1 one-way bearing 404 is divided into an inner ring and an outer ring, there are two situations in which the inner ring rotates and the outer ring does not rotate, and the inner and outer rings rotate at the same time. When the tooth plate 204 moves to the side away from the electric cylinder 206, the tooth plate 204 When meshing with the No. 2 gear 203, it drives the No. 2 gear 203 to rotate. At this time, the rotation of the No. 2 gear 203 on the left side drives the rotating rod 202 on the left side to rotate, and the rotation of the rotating rod 202 on the left side drives the gear rod 402 on the left side to rotate. The rotation of the gear rod 402 on the left side drives the inner and outer rings of the No. 1 one-way bearing 404 to rotate at the same time, and vice versa, the inner ring of the No. 1 one-way bearing 404 is driven to rotate while the outer ring does not rotate. The No. 1 one-way bearing 404 and the transmission rod 317 are driven by a synchronous wheel and a synchronous belt. The No. 3 gear 405 is fixedly installed on the end of the No. 1 one-way bearing 404 away from the synchronous wheel, and the No. 3 gear 405 is movably meshed with the toothless gear 403.

[0049] By adopting the above technical solution, the rotating rod 202 can drive the transmission rod 317 to rotate.

[0050] A toothless bevel gear 408 is fixedly installed on the outer surface of the middle part of the gear rod 402, and a No. 2 one-way bearing 406 is rotatably installed in the side of the fixed frame 401 close to the filter box 301. Since the No. 2 one-way bearing 406 is divided into an inner ring and an outer ring, there are two situations in which the inner ring rotates while the outer ring does not rotate and the inner and outer rings rotate at the same time. When the tooth plate 204 moves to the side close to the electric cylinder 206, the No. 2 gear 203 is driven to rotate when the tooth plate 204 and the No. 2 gear 203 are meshed, and at this time, the rotation of the No. 2 gear 203 on the right side drives the rotating rod 202 on the right side to rotate. The rotation of the rotating rod 202 on the right side drives the gear rod 402 on the right side to rotate, and the rotation of the gear rod 402 on the right side drives the inner and outer rings of the No. 2 one-way bearing 406 to rotate at the same time, and vice versa, the inner ring of the No. 2 one-way bearing 406 rotates while the outer ring does not rotate, and the No. 2 one-way bearing 406 and the mounting rod 306 located below are transmitted through a synchronous wheel and a synchronous belt, and a third bevel gear 407 is fixedly installed on one end of the No. 2 one-way bearing 406 close to the gear rod 402, and the third bevel gear 407 is movably meshed with the toothless bevel gear 408.

[0051] By adopting the above technical solution, the gear rod 402 can drive the installation rod 306 to rotate.

[0052] Working principle: First, the exhaust gas is transmitted through the transmission pipe 101, at this time, the ball valve 103 on the left is opened and the ball valve 103 on the right is closed, so that the exhaust gas is transmitted to the inside of the connecting pipe 102 on the left through the ball valve 103 on the left, and the exhaust gas is transmitted to the inside of the filter box 301 on the left through the connecting pipe 102 on the left. At this time, the exhaust gas is filtered and purified by the activated carbon filter device 312 inside the filter box 301;

[0053] Secondly, when the activated carbon filter device 312 on the left is about to be saturated, the electric cylinder 206 is turned on to drive the slide bar 205 to move away from the electric cylinder 206, and the movement of the slide bar 205 drives the tooth plate 204 to move. At this time, the tooth plate 204 first meshes with the No. 1 gear 105 on the left and the No. 2 gear 203 on the right, thereby driving the No. 1 gear 105 on the left and the No. 2 gear 203 on the right to rotate, and the rotation of the No. 1 gear 105 on the left drives the rotating rod 104 on the left to rotate, and the rotation of the rotating rod 104 on the left drives the ball valve 103 on the left to rotate. At this time, the ball valve 103 on the left is closed. 103 is a three-way valve, so that the exhaust gas can continue to move forward through the ball valve 103 on the left, and the tooth plate 204 continues to move. When the tooth plate 204 and the No. 1 gear 105 on the right and the No. 2 gear 203 on the left are meshed, the No. 1 gear 105 on the right and the No. 2 gear 203 on the left are driven to rotate, and the ball valve 103 on the right is driven to rotate through the rotation of the No. 1 gear 105 on the right. At this time, the ball valve 103 on the right is opened, so that the exhaust gas passes through the ball valve 103 on the right and enters the inside of the connecting pipe 102 on the right, and enters the inside of the filter box 301 on the right through the connecting pipe 102 on the right to be filtered and purified;

[0054] Then, the rotation of the No. 2 gear 203 on the left side drives the rotating rod 202 on the left side to rotate, and the rotation of the rotating rod 202 on the left side drives the gear rod 402 on the left side to rotate, and the rotation of the gear rod 402 on the left side drives the toothless gear 403 and the toothless bevel gear 408 on the left side to rotate, and the toothless bevel gear 408 on the left side and the third bevel gear 407 on the left side are meshed to drive the third bevel gear 407 on the left side to rotate, and the rotation of the third bevel gear 407 on the left side drives the No. 2 one-way bearing 406 on the left side to rotate, and the No. 2 one-way bearing on the left side is driven by the No. 2 one-way bearing The inner and outer rings of 406 rotate simultaneously to drive the mounting rod 306 to rotate, and the rotation of the mounting rod 306 drives the cam 307 to rotate, and the cooperation between the cam 307 and the first spring 310 drives the sealing plate 308 to move, so that the sealing plate 308 and the activated carbon filter device 312 are separated, and the rotation of the mounting rod 306 located above drives the cross bar 304 to rotate, and the rotation of the cross bar 304 drives the second bevel gear 305 to rotate, and the rotation of the second bevel gear 305 drives the first bevel gear 303 to rotate, and the rotation of the first bevel gear 303 drives the rotating plate 302 to rotate, so that the filter box 301 located on the left side is opened;

[0055] Finally, the toothless gear 403 on the left is meshed with the third gear 405 to drive the third gear 405 on the left to rotate, and the rotation of the third gear 405 on the left drives the first one-way bearing 404 on the left to rotate, and the inner and outer rings of the first one-way bearing 404 on the left rotate simultaneously, and the transmission rod 317 on the left is driven to rotate, and the rotation of the transmission rod 317 on the left drives the driving plate 315 inside the filter box 301 on the left to rotate, and the rotation of the driving plate 315 drives the swing bar 316 to swing, and the swing of the swing bar 316 drives the fixing rod 318 to move, and the movement of the fixing rod 318 drives the mounting frame 313 to move, and the movement of the mounting frame 313 drives the connecting bar 314 to swing, and the swing of the connecting bar 314 drives the moving frame 313 to move. The movable frame 311 moves, and the movement of the movable frame 311 drives the activated carbon filter device 312 to move, so that the activated carbon filter device 312 is moved out of the filter box 301, and the movement of the movable frame 311 drives the driving bar 327 to move. At this time, the driving bar 327 is driven to rotate by the obstruction of the baffle 328, and the driving rod 326 is driven to rotate by the rotation of the driving bar 327, and the vertical rod 322 is driven to rotate by the rotation of the driving rod 326, and the rotating bar 323 is driven to rotate by the rotation of the vertical rod 322, and the pushing bar 324 is driven to swing by the rotation of the rotating bar 323, and the guide rod 325 is driven to move by the swing of the pushing bar 324, and the moving block 320 is driven to move by the movement of the guide rod 325, so that the moving block 320 and the limit block 319 are separated, so as to facilitate the replacement of the activated carbon filter device 312.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A tail gas filtration device for hydrogen fluoride production, comprising a transmission mechanism (1), characterized in that: A driving mechanism (2) for driving a valve is provided on one side of the transmission mechanism (1), two filtering mechanisms (3) for filtering exhaust gas are provided above the transmission mechanism (1), and a transmission mechanism (4) for transmitting the driving mechanism (2) is provided between the two filtering mechanisms (3).

2. A tail gas filtration device for hydrogen fluoride production according to claim 1, characterized in that: The transmission mechanism (1) comprises a transmission pipe (101), two connecting pipes (102) are fixedly mounted on the outer surface of the transmission pipe (101), and the ends of the two connecting pipes (102) away from the transmission pipe (101) are respectively fixedly connected to the filtering mechanism (3), two ball valves (103) are rotatably mounted in the transmission pipe (101), two rotating rods (104) are fixedly mounted on the outer surface of the ball valve (103), and the ends of the rotating rods (104) away from the ball valve (103) are rotatably penetrated through the transmission pipe (101) and rotatably arranged inside the driving mechanism (2), and the ends of the rotating rods (104) away from the ball valve (103) are fixedly mounted with a first gear (105).

3. A tail gas filtration device for hydrogen fluoride production as claimed in claim 1, characterized in that: The driving mechanism (2) comprises a mounting platform (201), and the mounting platform (201) is located on one side of the transmission tube (101); two rotating rods (202) are rotatably mounted in a side of the mounting platform (201) close to the transmission tube (101); a second gear (203) is fixedly mounted on one end of the rotating rod (202) away from the transmission tube (101); a toothed plate (204) is slidably mounted on the upper surface of the mounting platform (201), and the toothed plate (204) is movably meshed with the two first gears (105) and the two second gears (203); a sliding bar (205) is fixedly mounted on the lower surface of the toothed plate (204), and the sliding bar (205) is slidably arranged inside the mounting platform (201); an electric cylinder (206) is fixedly mounted on the side of the mounting platform (201), and an end of the output shaft of the electric cylinder (206) close to the mounting platform (201) is fixedly connected to the sliding bar (205).

4. A tail gas filtration device for hydrogen fluoride production as claimed in claim 1, characterized in that: The filtering mechanism (3) comprises a filtering box (301), wherein the two filtering boxes (301) are located directly above the transmission pipe (101), and the ends of the two connecting pipes (102) away from the transmission pipe (101) are respectively fixedly connected to the two filtering boxes (301), and two rotating plates (302) are rotatably mounted on a side of the filtering box (301) away from the mounting platform (201), and a first bevel gear (303) is fixedly mounted on the top of the rotating shaft of the rotating plate (302), and the first bevel gear (303) is rotatably arranged inside the filtering box (301), and a cross bar (304) is rotatably mounted on the top of the side of the filtering box (301) close to the rotating plate (302), and second bevel gears (305) are fixedly mounted on both ends of the outer surface of the cross bar (304), and the second bevel gear (305) is meshed with the first bevel gear (303).

5. A tail gas filtration device for hydrogen fluoride production as claimed in claim 4, characterized in that: Two sealing plates (308) are slidably installed in the filter box (301), and two sliders (309) are fixedly installed on both sides of the sealing plate (308). The sliders (309) are slidably arranged in the filter box (301). A No. 1 spring (310) is fixedly installed on the upper surface of the slider (309), and one end of the No. 1 spring (310) away from the slider (309) is fixedly connected to the inside of the filter box (301). The filter box (301) is rotatably installed with mounting rods (306) on both upper and lower sides, and the two mounting rods (306) are driven by synchronous wheels and synchronous belts. The mounting rod (306) and the cross bar (304) located at the top are driven by synchronous wheels and synchronous belts. Cams (307) are fixedly installed on the outer surfaces of both ends of the mounting rods (306), and the outer surfaces of the cams (307) are in contact with the sealing plates (308).

6. A tail gas filtration device for hydrogen fluoride production as claimed in claim 5, characterized in that: A movable frame (311) is slidably mounted in the filter box (301), two mounting frames (313) are slidably mounted in a side of the filter box (301) away from the rotating plate (302), connecting bars (314) are rotatably mounted in both upper and lower ends of the mounting frames (313), and one end of the connecting bar (314) away from the mounting frame (313) is rotatably connected to the movable frame (311), and a transmission rod (314) is rotatably mounted in a side of the filter box (301) away from the rotating plate (302). 7), a driving plate (315) is fixedly mounted on one end of the transmission rod (317) close to the rotating plate (302), and the driving plate (315) is rotatably arranged inside the filter box (301), swing bars (316) are rotatably mounted on both ends of the driving plate (315), a fixed rod (318) is rotatably mounted in one end of the swing bar (316) away from the driving plate (315), and one end of the fixed rod (318) away from the swing bar (316) is fixedly connected to the mounting frame (313).

7. A tail gas filtration device for hydrogen fluoride production as claimed in claim 6, characterized in that: An activated carbon filter device (312) is detachably mounted in the movable frame (311), and the sides of the sealing plate (308) that are close to each other are in movable contact with the upper and lower sides of the activated carbon filter device (312). Two limit blocks (319) are fixedly mounted on both sides of the activated carbon filter device (312), and the limit blocks (319) are movably clamped in the movable frame (311). A movable block (320) is slidably mounted in the movable frame (311), and the movable block (320) and the limit blocks (319) are in movable contact. Two opposite sides of the movable blocks (320) that are away from each other are fixedly mounted with a No. 2 spring (321), and one end of the No. 2 spring (321) away from the movable block (320) is fixedly connected to the inside of the filter box (301).

8. A tail gas filtration device for hydrogen fluoride production as claimed in claim 7, characterized in that: Two vertical rods (322) are rotatably mounted in the middle of both sides of the moving frame (311), and a rotating bar (323) is fixedly mounted on the top of the vertical rod (322). A pushing bar (324) is rotatably mounted on one end of the rotating bar (323) away from the vertical rod (322), and a guide rod (325) is rotatably mounted in one end of the pushing bar (324) away from the rotating bar (323), and the top of the guide rod (325) is fixedly connected to the moving block (320). Two vertical rods (322) are rotatably mounted in the middle of both sides of the moving frame (311), and a rotating bar (323) is fixedly mounted on the top of the vertical rod (322). A driving rod (326) is provided, and the driving rod (326) is located on a side close to the connecting bar (314). The driving rod (326) and the vertical rod (322) are driven by a synchronous wheel and a synchronous belt. A driving bar (327) is fixedly mounted on the top of the driving rod (326), and the driving bar (327) is rotatably arranged inside the movable frame (311). Two baffles (328) are fixedly mounted on opposite inner walls of the filter box (301), and the baffles (328) are in movable contact with the outer surfaces of the driving bar (327).

9. A tail gas filtration device for hydrogen fluoride production as claimed in claim 1, characterized in that: The transmission mechanism (4) comprises a fixed frame (401), and both sides of the fixed frame (401) are respectively fixedly connected to the two filter boxes (301), two gear rods (402) are symmetrically installed in the fixed frame (401), and the two gear rods (402) and the two rotating rods (202) are driven by synchronous wheels and synchronous belts, a toothless gear (403) is fixedly installed on the outer surface of one end of the gear rod (402) close to the mounting platform (201), a No. 1 one-way bearing (404) is symmetrically installed in one side of the fixed frame (401) close to the mounting platform (201), and the No. 1 one-way bearing (404) and the transmission rod (317) are driven by synchronous wheels and synchronous belts, and a No. 3 gear (405) is fixedly installed on the end of the No. 1 one-way bearing (404) away from the synchronous wheel, and the No. 3 gear (405) and the toothless gear (403) are movably meshed.

10. A tail gas filtration device for hydrogen fluoride production as claimed in claim 9, characterized in that: A toothless bevel gear (408) is fixedly installed on the outer surface of the middle part of the gear rod (402), and a second one-way bearing (406) is rotatably installed in the side of the fixed frame (401) close to the filter box (301), and the second one-way bearing (406) and the mounting rod (306) located below are driven by a synchronous wheel and a synchronous belt, and a third bevel gear (407) is fixedly installed on one end of the second one-way bearing (406) close to the gear rod (402), and the third bevel gear (407) and the toothless bevel gear (408) are movably meshed.

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