Multi-filtration tail gas treatment device

Abstract

The utility model provides a multi-filtration tail gas treatment device, including top module, intermediate module and tail module, top module includes top straight cylinder part, top straight cylinder part is equipped with the discharge pipe, tail module includes tail straight cylinder part, tail straight cylinder part is equipped with the input pipe, intermediate module includes outer cylinder, inner cylinder and filter component, the outer cylinder is equipped with the discharge pipe, and the inner cylinder is equipped with the input pipe. The filtering assembly comprises a fixing ring and a filtering disc, the fixing ring and the filtering disc are inserted into the inner cylinder in a penetrating mode, an anti-return frame is installed on the fixing ring, a rotating plate is installed on the anti-return frame, a stop lever is hinged to the rotating plate, a stop block and a spring are further installed on the rotating plate, the spring is arranged on the rotating plate and further connected to the middle position of the stop lever, and the stop block is installed on the rotating plate; the stop block is attached to the end of the stop rod, the bottom of the filtering disc is provided with a pushing and abutting ring corresponding to the stop rod, the position of the filtering disc on the inner cylinder is fixed through the fixing ring, gaps formed in the outer cylinder for the filtering disc can be reduced, the tail gas leakage probability is reduced, and air pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification equipment, in particular to a multiple-filtration tail gas treatment device. Background Art

[0002] When a laboratory is in use, especially a biological or chemical laboratory, it is very easy to produce a large amount of harmful gases. Direct discharge of untreated harmful gases will pollute the atmosphere. The exhaust gas in the laboratory needs to be treated before discharge. Due to different experimental processes in the laboratory, the exhaust gas generated is also different. Therefore, it is necessary to change the reactants of the exhaust gas treatment according to the experimental process. Patent No.: CN202022211248.6 discloses an atmospheric pollution control purification tower, which specifically discloses the use of connecting rods and sliders to drive the filter plate out of the tower, so as to replace the filter plate. At the same time, the chamber of the tower body can also be opened by a spring to put in the agent. When the above-mentioned equipment is used in a specific application, there is a gap at the contact position between the connecting block and the side wall. The exhaust gas can easily escape from the connecting block to the outside before being filtered, causing gas pollution. Utility Model Content

[0003] The technical problem to be solved by the utility model is that: there are gaps on the side walls of the existing tail gas treatment device, which easily cause the leakage of unfiltered tail gas.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a multi-filtration exhaust gas treatment device, comprising a top module, an intermediate module and a tail module, the top module comprising a top straight cylinder portion, on which an exhaust pipe is installed, the tail module comprising a tail straight cylinder portion, on which an inlet pipe is installed, the intermediate module comprising an outer cylinder, an inner cylinder arranged in the outer cylinder and a plurality of filter components inserted in the inner cylinder, the filter component comprising a fixing ring and a filter disc, the fixing ring and the filter disc being slidably inserted into the inner cylinder, an anti-backward frame being installed on the inner wall of the fixing ring, a rotating plate being installed on the anti-backward frame, a baffle being hinged on the rotating plate, a baffle and a spring being further installed on the rotating plate, the spring being arranged on the end of the rotating plate away from the anti-backward frame, the spring being also connected to the middle position of the baffle, the baffle being installed on the side of the rotating plate close to the spring, the baffle being affixed to the end of the baffle, and a push ring corresponding to the baffle being provided at the bottom of the filter disc.

[0005] Furthermore, a slide groove is provided on the inner wall of the inner cylinder, and sliders are installed on the outer walls of the fixing ring and the filter disc, and the sliders can slide in the slide groove.

[0006] Furthermore, a locking screw is inserted into the inner wall of the fixing ring. The locking screw is arranged along the radial direction of the fixing ring and passes through the side wall of the fixing ring.

[0007] Furthermore, the rotating plate is hinged to the anti-return frame.

[0008] Furthermore, a screw rod passes through the hinge point between the anti-return frame and the rotating plate, and locking nuts are provided on both ends of the screw rod, and the side surfaces of the locking nuts are fitted to the rotating plate and the anti-return frame.

[0009] Furthermore, the top module includes a top straight cylinder portion and a dome portion, a discharge pipe is installed on the top straight cylinder portion, and the top straight cylinder portion is arranged above the outer cylinder.

[0010] Furthermore, the tail module includes a tail straight tube portion and a chassis portion, the tail straight tube portion is installed with an input pipe, the tail straight tube portion is installed below the outer tube, and the chassis portion is arranged below the tail straight tube portion.

[0011] Furthermore, filter membranes are inserted into the filter discs, and the material and processing method of the filter membranes of the filter discs are selected according to filtering requirements.

[0012] The beneficial effect of the present invention is that the fixing ring is first installed in the inner cylinder, and the blocking rod is supported by the anti-return frame on the fixing ring. The blocking rod and the anti-return frame are also connected by a spring. When the filter disc slides in the inner cylinder, the push ring under the filter disc can push the blocking rod until the push ring is inserted between the blocking rod and the anti-return frame. After the push ring is in place, the blocking rod and the anti-return frame limit the push ring, thereby limiting the position of the filter disc in the inner cylinder. The above structure can be used to fix the position of the filter disc inside the inner cylinder, reduce the gap on the outer cylinder, reduce the probability of exhaust gas leakage, and reduce the possibility of exhaust gas polluting the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a three-dimensional diagram of the utility model's multi-filtration tail gas treatment device;

[0015] Figure 2 yes Figure 1 A perspective view of the filter assembly;

[0016] Figure 3 yes Figure 2 A perspective view of the middle filter assembly;

[0017] Figure 4 yes Figure 1 A top view of

[0018] Figure 5 It is along Figure 4 Cross-sectional view of AA;

[0019] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0020] In the figure: top module 10, middle module 20, tail module 30, discharge pipe 110, outer tube 210, inner tube 220, filter assembly 230, slide groove 221, fixing ring 231, filter plate 232, slider 233, locking screw 234, anti-return frame 241, rotating plate 242, screw 243, stop rod 244, spring 245, stop block 246, push ring 247, input pipe 310. DETAILED DESCRIPTION

[0021] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0022] like Figures 1 to 6 As shown, the utility model provides a multi-filtration exhaust gas treatment device, including a top module 10, a middle module 20 and a tail module 30. The top module 10 and the tail module 30 are arranged at both ends of the middle module 20. The laboratory exhaust gas to be treated enters from the tail module 30, is filtered and purified by the middle module 20, and is discharged from the top module 10.

[0023] like Figure 1 and Figure 4 As shown, the top module 10 includes a top straight cylindrical portion and a dome portion. The top straight cylindrical portion is a cylindrical structure. The top straight cylindrical portion is arranged below the dome portion. An exhaust pipe 110 is installed on the side wall of the top straight cylindrical portion. The exhaust pipe 110 can discharge the filtered gas.

[0024] like Figure 2 、 Figure 3 、 Figure 5 as well as Figure 6As shown, the intermediate module 20 includes an outer cylinder 210, an inner cylinder 220 disposed within the outer cylinder 210, and a plurality of filter assemblies 230 inserted into the inner cylinder 220. The outer cylinder 210 is disposed below the top straight cylindrical portion, and the inner cylinder 220 is disposed in contact with the inner wall of the outer cylinder 210. A chute 221 is provided on the inner wall of the inner cylinder 220. The chute 221 is preferably a T-shaped slot. The filter assembly 230 can be slidably inserted into the chute 221. There are multiple filter assemblies 230, each of which includes a fixing ring 231 and a filter disc 232. The fixing ring 231 is disposed below the filter disc 232. A filter membrane is inserted into the filter disc 232. The material and treatment method of the filter membrane are selected according to the filtering requirements. The filter membranes in the multiple filter discs 232 can be combined to filter the laboratory exhaust gas.

[0025] like Figure 2 、 Figure 5 as well as Figure 6 As shown, the outer walls of the fixing ring 231 and the filter disc 232 are each mounted with a plurality of sliders 233 corresponding to the chute 221. Both the fixing ring 231 and the filter disc 232 can be inserted into the inner cylinder 220 via the sliders 233. Locking screws 234 are cooperatingly inserted into the inner wall of the fixing ring 231. The locking screws 234 are radially arranged along the fixing ring 231 and extend through the sidewall of the fixing ring 231. The locking screws 234 push against the fixing ring 231, securing the fixing ring 231 in position within the inner cylinder 220. The filter disc 232 is disposed above the fixing ring 231 and can be mounted on the fixing ring 231. Under the load of the fixing ring 231, the filter disc 232 is secured in position within the chute 221.

[0026] like Figure 2 、 Figure 3 as well as Figure 6 As shown, an anti-return frame 241 is installed on the inner wall of the fixing ring 231, and several rotating plates 242 are hinged on the anti-return frame 241. A screw 243 passes through the hinge point between the rotating plate 242 and the anti-return frame 241, and locking nuts are respectively provided at both ends of the screw 243. The side surfaces of the locking nuts fit the rotating plate 242 and the anti-return frame 241. When the locking nuts are tightened on the screw 243, the two locking nuts can clamp the rotating plate 242 and the anti-return frame 241, thereby enhancing the friction between the rotating plate 242 and the anti-return frame 241 and preventing the rotating plate 242 from rotating relative to the anti-return frame 241. When the clamping degree of the rotating plate 242 and the anti-return frame 241 by the loosening of the locking nuts is reduced, the friction between the rotating plate 242 and the anti-return frame 241 is reduced, so that the rotating plate 242 can rotate relative to the anti-return frame 241.

[0027] A stopper 244 is hingedly connected to the end of the rotating plate 242 away from the anti-return frame 241. A spring 245 is also fixed to the end of the rotating plate 242. The other end of the spring 245 is connected to the middle position of the stopper 244. Under the action of the spring 245, the rotation angle of the stopper 244 on the rotating plate 242 is fixed. A stopper 246 is also installed on the end of the rotating plate 242. The stopper 246 is arranged on the side of the stopper 244 near the spring 245. The stopper 246 is attached to the end of the stopper 244 and can block the end of the stopper 244. Under the blockage of the stopper 246, the rotation angle of the stopper 244 relative to the rotating plate 242 is limited.

[0028] like Figure 2 and Figure 5 As shown, a push ring 247 is fixedly installed under the filter disc 232, and the push ring 247 is set corresponding to the end of the baffle rod 244. When the push ring 247 moves along the slide groove 221, the end of the baffle rod 244 can be pressed, and the baffle rod 244 overcomes the elasticity of the spring 245 and rotates around the end of the rotating plate 242. After the baffle rod 244 rotates into place, the push ring 247 is located between the baffle rod 244 and the fixed ring 231. Under the blocking action of the block 246, the reverse rotation process of the baffle rod 244 relative to the rotating plate 242 is prevented, which can prevent the push ring 247 from detaching from between the baffle rod 244 and the fixed ring 231.

[0029] like Figure 1 and Figure 4 As shown, the tail module 30 includes a tail straight cylinder part and a chassis part, an input pipe 310 is installed on the tail straight cylinder part, the tail straight cylinder part is installed below the outer cylinder 210, and the chassis part is arranged below the tail straight cylinder part. Under the sealing of the tail straight cylinder part and the chassis part, the tail module 30 constitutes a sealed bottom basin structure, and the input pipe 310 is connected to the exhaust gas collection equipment of the external laboratory, and the laboratory exhaust gas that needs to be reacted and treated is input into the equipment through the input pipe 310.

[0030] When the above-mentioned multiple-filtration exhaust gas treatment device is in use, the filter membrane in the filter disc 232 is first replaced according to the composition of the laboratory exhaust gas, and then the top straight cylinder part and the dome part of the top module 10 are opened, and the fixing ring 231 and the filter disc 232 are slid into the inner cylinder 220 in sequence through the slide groove 221. After the fixing ring 231 slides to the specified position through the slider 233 on the side, the locking screw 234 is rotated to press the inner wall of the inner cylinder 220 until the position of the fixing ring 231 on the inner cylinder 220 is fixed. Then, the filter disc 232 is slid to the top of the fixing ring 231, and the pushing ring 247 at the bottom of the filter disc 232 pushes the stop rod 244 until the pushing ring 247 enters between the stop rod 244 and the fixing ring 231. Under the restriction of the stop block 246 and the fixing ring 231, the position of the filter disc 232 in the inner cylinder 210 is fixed. After inserting the retaining ring 231 and filter disc 232, the laboratory exhaust gas to be treated is injected into the tank through the inlet pipe 310. After a series of filtration, it is discharged through the exhaust pipe 110. When the filter membrane needs to be replaced, the tail module 30 is opened, the locking screw 234 is loosened, and the retaining ring 231 and filter disc 232 can be removed from the inner cylinder 210.

[0031] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-filtration tail gas treatment device, characterized by: The invention comprises a top module (10), an intermediate module (20) and a tail module (30), wherein the top module (10) comprises a top straight cylinder portion, on which a discharge pipe (110) is installed, the tail module (30) comprises a tail straight cylinder portion, on which an input pipe (310) is installed, the intermediate module (20) comprises an outer cylinder (210), an inner cylinder (220) arranged in the outer cylinder (210), and a plurality of filter assemblies (230) inserted into the inner cylinder (220), the filter assemblies (230) comprising a fixing ring (231) and a filter disc (232), the fixing ring (231) and the filter disc (232) being slidably inserted into the inner cylinder (220 ... An anti-return frame (241) is installed on the inner wall of the filter disc (232), a rotating plate (242) is installed on the anti-return frame (241), a blocking rod (244) is hinged on the rotating plate (242), a blocking block (246) and a spring (245) are also installed on the rotating plate (242), the spring (245) is arranged on the end of the rotating plate (242) away from the anti-return frame (241), the spring (245) is also connected to the middle position of the blocking rod (244), the blocking block (246) is installed on the side of the rotating plate (242) close to the spring (245), the blocking block (246) is attached to the end of the blocking rod (244), and a push ring (247) corresponding to the blocking rod (244) is provided at the bottom of the filter disc (232).

2. The multi-filtration exhaust gas treatment device according to claim 1, characterized in that: A sliding groove (221) is provided on the inner wall of the inner cylinder (220), and sliding blocks (233) are installed on the outer walls of the fixing ring (231) and the filter disc (232). The sliding blocks (233) can slide in the sliding groove (221).

3. The multi-filtration tail gas treatment device according to claim 1, characterized in that: A locking screw (234) is inserted into the inner wall of the fixing ring (231), and the locking screw (234) is arranged along the radial direction of the fixing ring (231). The locking screw (234) passes through the side wall of the fixing ring (231).

4. The multi-filtration tail gas treatment device according to claim 1, characterized in that: The rotating plate (242) is hinged to the anti-return frame (241).

5. The multi-filtration tail gas treatment device according to claim 4, characterized in that: A screw rod (243) passes through the hinge point between the anti-return frame (241) and the rotating plate (242), and locking nuts are provided at both ends of the screw rod (243), and the side surfaces of the locking nuts are fitted to the rotating plate (242) and the anti-return frame (241).

6. The multi-filtration tail gas treatment device according to claim 1, characterized in that: The top module (10) further includes a dome portion, and the top straight cylinder portion is arranged above the outer cylinder (210).

7. The multi-filtration tail gas treatment device according to claim 1, characterized in that: The tail module (30) further includes a chassis portion, the tail straight tube portion is installed below the outer tube (210), and the chassis portion is arranged below the tail straight tube portion.

8. The multi-filtration exhaust gas treatment device according to claim 1, characterized in that: The filter discs (232) are interspersed with filter membranes, and the material and processing method of the filter membranes of each filter disc (232) are selected according to filtering requirements.

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