Waste gas treatment device and method

Abstract

The invention belongs to the technical field of waste gas treatment, particularly relates to a waste gas treatment device and method, and aims at solving the problems that a waste gas treatment device needs to be closed in the existing adsorbent replacement process, the purification efficiency of waste gas is influenced, and harmful gas remained in the waste gas treatment device causes environmental pollution and causes environmental pollution. According to the technical scheme, the device comprises a bottom frame, a rotating table is rotationally connected to the top of the bottom frame, a purification box is fixed to the top end of the rotating table through bolts, two purification bins are formed in the purification box through a partition plate, and adsorption frames are slidably connected to the interiors of the two purification bins. According to the waste gas treatment device, waste gas treatment can be carried out continuously when an adsorbent is replaced, the space, where the adsorbent to be replaced is located, in the purification bin can be closed when the purification box rotates, residual waste gas in the purification bin is prevented from overflowing to the outside, and in addition, during follow-up continuous waste gas treatment, waste gas in the corresponding purification bin can be recycled and treated again.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device and method. Background Art

[0002] The different production processes in electroplating workshops will produce different waste gases. The main types of electroplating waste gases are hydrogen chloride, chromic acid mist, sulfuric acid mist, nitrogen oxides, hydrogen cyanide and fluoride. In addition, there are some dust-containing gases, organic waste gases, and alkaline gases. This type of acid mist waste gas not only affects the health of workshop personnel and the working environment, but also pollutes the surrounding environment. Therefore, some professional waste gas treatment equipment manufacturers are needed to treat these waste gases.

[0003] At present, the main methods for treating nitrogen oxides in electroplating workshops are adsorbent adsorption method and liquid absorption method. The liquid absorption method neutralizes the waste gas through acid and alkali solution, which is simple to operate, but consumes a lot of energy and water, has high operating costs, and has the hidden danger of secondary pollution. The adsorption method uses the adsorption properties of the adsorbent to adsorb and separate harmful substances such as acidic substances in the acid mist waste gas to achieve the purpose of purification. It also has a good purification efficiency for removing nitrogen oxides produced by nitric acid mist, and does not produce secondary pollution. The adsorption method is simple to operate.

[0004] There are still some shortcomings in the existing technology of waste gas treatment by adsorption:

[0005] 1. The adsorption capacity of the adsorbent in the adsorption method is limited and needs to be replaced in time. However, during the replacement process, the exhaust gas treatment device needs to be shut down, which affects the purification efficiency of the exhaust gas;

[0006] 2. In addition, when replacing the adsorbent, the harmful gas remaining in the exhaust gas treatment device cannot be adsorbed by the adsorbent, causing the residual harmful gas to escape from the device, which not only causes environmental pollution, but also easily causes harm to the personnel who replace the adsorbent.

[0007] In view of the above problems, the present invention document proposes an exhaust gas treatment device and method. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art that the exhaust gas treatment device needs to be shut down during the process of replacing the adsorbent, which affects the purification efficiency of the exhaust gas. The harmful gases remaining in the exhaust gas treatment device not only cause environmental pollution but also cause harm to the personnel who replace the adsorbent. A waste gas treatment device and method are proposed.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] An exhaust gas treatment device comprises a base frame, the top of the base frame is rotatably connected to a rotating table, a purification box is fixed to the top of the rotating table by bolts, two purification chambers are formed in the purification box by a partition, adsorption frames are slidably connected in the two purification chambers, and one end of the adsorption frame extends to the outside of the purification box, an adsorbent for adsorbing exhaust gas is arranged in the adsorption frame, and an air intake pipe connected to the air storage channel is fixed on the top of the base frame; the adsorbent can be any one of activated carbon, molecular sieve, silica gel and ammonia coal slime;

[0011] An exhaust structure, arranged in the chassis, is used to alternately inject exhaust gas into the corresponding purification chamber, so that the exhaust gas can be treated simultaneously when the adsorbent is replaced;

[0012] The detection structure is arranged on the top of the base frame and is used to detect the exhaust gas after being adsorbed by the adsorbent, and can replace the adsorbent when the adsorbent reaches the adsorption limit;

[0013] The circulation structure is arranged at the top of the purification box and is used to re-purify the exhaust gas in the purification chamber where the adsorbent that has reached the adsorption limit is located, so as to avoid the residual exhaust gas from being dispersed to the outside when the adsorbent is replaced later.

[0014] In a possible design, the exhaust structure includes an annular groove arranged on the top of the base frame, an air storage channel is arranged in the base frame, and the annular groove is connected to the air storage channel, a closed ring is fixed in the annular groove by bolts, a second circular hole is arranged in the closed ring, a rotating ring located above the closed ring is rotatably connected in the annular groove, a connecting pipe is fixedly penetrated through the bottom inner walls of the two purification bins, the bottom ends of the two connecting pipes are fixedly penetrated through the rotating ring and fit with the top of the closed ring, and the second circular hole cooperates with the connecting pipe, the top inner walls of the two purification bins are fixedly penetrated with chimneys, and the top of the purification box is provided with a circular A disc, a plurality of supporting wheels are fixed to the bottom of the disc by bolts, and the supporting wheels slide on the top of the purification box, and a first circular hole matching with the chimney is provided in the disc; when the rotating table drives the purification box to rotate 180°, the two connecting pipes drive the rotating ring to rotate 180°, and at this time the positions of the two connecting pipes are interchanged, and the second circular hole matches with the other connecting pipe, so as to inject waste gas into the corresponding purification bin, and then purify the waste gas when the adsorbent is replaced. In addition, when the positions of the two adsorbents are replaced, the two chimneys alternately match with the first circular hole to prevent the residual waste gas in the purification bin where the adsorbent to be replaced is located from spreading to the outside.

[0015] In one possible design, the detection structure includes a fixed block fixed to one side of the top of the base frame by welding, a sliding rod slidingly penetrates the fixed block, an L-shaped frame is welded to one end of the sliding rod away from the annular groove, the outer wall of the sliding rod is provided with a tension spring fixedly connected to the L-shaped frame, and the other end of the tension spring is fixedly connected to the side of the fixed block away from the annular groove, the bottom of one side of the L-shaped frame is slidably connected to the top of the disc by a slide rail, through holes and air inlets are provided on both sides of the purification box, and the through holes and air inlets are connected to the corresponding purification bins, the through holes and air inlets are respectively located above and below the adsorption frame, and the side of the L-shaped frame close to the purification box is fixed by bolts. There are two blocking blocks, and the two blocking blocks are used to close the through holes and the air inlet. One side of the blocking block located above is fixed with an acid-base detection sensor by bolts. The acid-base detection sensor is used to detect whether the acidity and alkalinity of the gas after adsorption by the adsorbent meet the standard; when the purification box rotates, the two blocking blocks are detached from the through holes and the air inlet on one side of the purification box, and the tension spring is in a stretched state. When the purification box rotates 180°, the two blocking blocks re-close the through holes and the air inlet on the other side of the purification box under the tension of the tension spring, and then close the through holes and the air inlet to prevent the exhaust gas from spreading to the outside, and the acid-base detection sensor detects the gas adsorbed by the replaced adsorbent again.

[0016] In one possible design, the circulation structure includes a smoke collecting tube fixed to the top of the purification box by bolts, and the top of the smoke collecting tube is rotatably connected to the bottom of the disc, and both sides of the smoke collecting tube are connected to two chimneys through smoke guiding pipes, and the bottom end of the smoke collecting tube is fixedly connected to a smoke return pipe, and the bottom end of the smoke return pipe is fixedly passed through the purification box and the partition, and the bottom end of the smoke return pipe is rotatably extended into the gas storage duct, and the outer walls of the smoke return pipe and the two smoke guiding pipes are provided with a one-way valve, which can prevent the backflow of exhaust gas; the exhaust gas remaining above and below the adsorbent that has reached the adsorption limit floats upward, and the remaining exhaust gas enters the smoke return pipe through the chimney, the smoke guiding pipe and the smoke collecting tube, and the smoke return pipe re-discharges the remaining exhaust gas into the annular groove and the gas storage duct, and re-purifies the remaining exhaust gas to prevent the residual exhaust gas from overflowing to the outside when the adsorbent is replaced later.

[0017] In a possible design, a driving motor is fixed to the top of the base frame by bolts, a spur gear is fixed to the output shaft of the driving motor by a coupling, a spur gear ring is fixed to the outer wall of the rotating table by bolts, and the spur gear ring is meshed with the spur gear.

[0018] In a possible design, wedge-shaped closing blocks are fixed to the inner walls on both sides of the through hole and the air inlet that are away from each other, and inclined surfaces are provided on both sides of the closing block, and the inclined surfaces cooperate with the wedge-shaped closing blocks; when the purification box rotates, the cooperation between the wedge-shaped closing block and the inclined surfaces can not only make the two closing blocks smoothly detach from the through hole and the air inlet, but also close the through hole and the air inlet, thereby avoiding the overflow of exhaust gas when purifying the exhaust gas.

[0019] In a possible design, the inner walls of the two purification chambers that are away from each other are connected to a closing plate by rotation through a base, and the closing plate is used to close the through hole. A magnet is fixedly embedded on one side of the closing plate, and the purification box is made of magnetic metal, and magnetism is generated between the magnet and the purification box; when the purification box rotates 180°, the sealing block detaches from the through hole, and the cooperation between the closing plate and the magnet can close the through hole in time to prevent the residual exhaust gas in the purification chamber from spilling to the outside through the through hole.

[0020] In a possible design, the top ends of the two connecting pipes are rotatably connected to a rotating disk, a plurality of inclined holes are provided in the rotating disk, a rotating smoke exhaust hood is fixed to the top of the rotating disk by bolts, and the inclined holes are covered by the rotating smoke exhaust hood, and the air inlet is located below the rotating disk; when the exhaust gas flows into the purification chamber through the connecting pipe, the exhaust gas enters the rotating smoke exhaust hood, and under the action of the rotating smoke exhaust hood, the exhaust gas pushes the rotating smoke exhaust hood to rotate, and in addition, the exhaust gas also pushes the rotating disk to rotate when passing through the inclined holes. At this time, when the rotating smoke exhaust hood and the rotating disk rotate at the same time, the exhaust gas in the connecting pipe overflows to the surroundings, avoiding the exhaust gas from concentrating in the center of the adsorbent and flowing away, thereby increasing the timeliness of the adsorbent to adsorb the exhaust gas.

[0021] In a possible design, a rotating shaft is rotated through the partition, and the rotating shaft rotates through the smoke return pipe, the two ends of the rotating shaft extend into the two purification chambers respectively and are fixed with bevel gears, the bottoms of the two rotating disks are fixed with fixed cylinders by bolts, the outer walls of the fixed cylinders are fixed with bevel gear rings meshing with bevel gears by bolts, and the outer walls of the two fixed cylinders are fixed with blades by bolts; when the rotating disk rotates, the rotating disk drives the other rotating disk to rotate through the cooperation of the bevel gear ring, the bevel gear and the rotating shaft, and the rotating disk drives the blades to rotate, and the blades discharge fresh air from the outside upward through the air inlet, and the fresh air can blow the residual exhaust gas above and below the adsorbent that has reached the adsorption limit upward, and then the residual exhaust gas can be re-discharged into the annular groove and the air storage duct, and the residual exhaust gas is re-purified to avoid the residual exhaust gas from overflowing to the outside when the adsorbent is replaced later.

[0022] In the present application, a method for using an exhaust gas treatment device comprises the following steps:

[0023] S1. Inject waste gas into the annular groove and the air storage channel through the air intake pipe, and the waste gas enters the purification chamber through the second circular hole and the connecting pipe. The adsorbent adsorbs and separates the acidic substances and nitrogen oxide harmful substances in the waste gas to achieve the purpose of purification. The purified waste gas is discharged to the outside through the chimney and the first circular hole. At the same time, the waste gas adsorbed by the adsorbent is detected by the acid-base detection sensor;

[0024] S2. When the adsorption capacity of the adsorbent reaches its limit and needs to be replaced, the acid-base detection sensor can detect that the pH value of the exhaust gas after adsorption by the adsorbent does not meet the standard, and the drive motor is started. The drive motor drives the rotating table and the purification box to rotate 180° through the cooperation of the spur gear and the spur ring. When the purification box rotates, the wedge-shaped closing block and the inclined surface of the closing block are used to push the closing block and the L-shaped frame to slide outward until the two closing blocks are detached from the through hole and the air inlet on one side of the purification box, and the tension spring is in a stretched state. In addition, the closing plate re-closes the through hole after losing the obstruction of the closing block to prevent the gas above the adsorption frame from being completely adsorbed from escaping through the through hole, and the air inlet is located below the rotating disk. Therefore, the exhaust gas below the adsorption frame floats upward to prevent the exhaust gas from escaping to the outside through the air inlet. When the purification box rotates 180°, the two closing blocks re-close the through hole and the air inlet on the other side of the purification box under the tension of the tension spring;

[0025] S3. When the purification box rotates, the purification box drives the connecting pipe to rotate through the rotating ring, and one of the connecting pipes is disengaged from the second circular hole, and the exhaust gas in the annular groove cannot enter the purification box, and one of the chimneys is disengaged from the first circular hole, and the exhaust gas that is not adsorbed above the adsorption frame cannot be discharged to the outside. When the purification box rotates 180°, the other connecting pipe and the chimney are aligned with the blade and the first circular hole respectively. At this time, the exhaust gas in the annular groove can be adsorbed by the new adsorbent;

[0026] S4. When the exhaust gas flows into the purification chamber through the connecting pipe, the exhaust gas enters the rotary exhaust hood. Under the action of the rotary exhaust hood, the exhaust gas pushes the rotary exhaust hood to rotate. In addition, when the exhaust gas passes through the inclined hole, it also pushes the rotating disk to rotate. At this time, when the rotary exhaust hood and the rotating disk rotate at the same time, the exhaust gas in the connecting pipe overflows to the surroundings, avoiding the exhaust gas from concentrating in the center of the adsorbent and rushing away, thereby increasing the timeliness of the adsorbent to adsorb the exhaust gas;

[0027] S5. When the rotating disk rotates, the rotating disk drives another rotating disk to rotate through the cooperation of the bevel gear ring, the bevel gear and the rotating shaft. The rotating disk drives the blades to rotate. The blades discharge the fresh air from the outside upward through the air inlet. The fresh air can blow the residual exhaust gas above and below the adsorbent that has reached the adsorption limit upward. The residual exhaust gas enters the smoke return pipe through the chimney, the smoke guide pipe and the smoke collecting pipe. The smoke return pipe re-discharges the residual exhaust gas into the annular groove and the air storage duct to purify the residual exhaust gas again to avoid the residual exhaust gas from spreading to the outside when the adsorbent is replaced later. Then the adsorption frame can be taken out of the purification box to replace the adsorbent that has reached the adsorption limit. The exhaust gas can also be treated when the adsorbent is replaced.

[0028] In the present invention, the exhaust structure includes an annular groove arranged on the top of the base frame, an air storage channel is arranged in the base frame, a closed ring is fixed in the annular groove, a second circular hole is arranged in the closed ring, a rotating ring located above the closed ring is rotatably connected in the annular groove, and the bottom ends of the two connecting pipes are fixedly penetrated through the rotating ring and fit with the top of the closed ring; the rotating table drives the purification box, the connecting pipe and the rotating ring to rotate, and the positions of the two connecting pipes are interchanged at this time, and the second circular hole cooperates with the other connecting pipe to inject exhaust gas into the corresponding purification chamber, and then the exhaust gas is also purified when the adsorbent is replaced. In addition, when the positions of the two adsorbents are replaced, the two chimneys are alternately matched with the first circular hole to prevent the residual exhaust gas in the purification chamber where the adsorbent to be replaced is located from spilling to the outside;

[0029] In the present invention, both sides of the smoke collecting tube are connected with two chimneys through smoke guide pipes, the bottom end of the smoke collecting tube is fixedly connected with a smoke return pipe, the bottom end of the smoke return pipe is rotated and extended into the gas storage channel, a disc is provided on the top of the purification box, and a first circular hole matching with the chimney is provided in the disc; when the purification box rotates, the connecting pipe and the chimney are closed at the same time to prevent the residual exhaust gas from escaping to the outside, and through the rotation of the blades, the exhaust gas floats upward and is re-discharged into the annular groove and the gas storage channel, so that the residual exhaust gas is re-purified;

[0030] In the present invention, the top ends of the two connecting pipes are rotatably connected with a rotating disk, a plurality of inclined holes are arranged in the rotating disk, and a rotating smoke hood is fixed to the top of the rotating disk by bolts; the exhaust gas enters the rotating smoke hood through the connecting pipe, and under the action of the rotating smoke hood, the exhaust gas pushes the rotating smoke hood to rotate, and the exhaust gas also pushes the rotating disk to rotate when passing through the inclined holes. At this time, when the rotating smoke hood and the rotating disk rotate at the same time, the exhaust gas in the connecting pipe is dispersed to the surroundings, so as to avoid the exhaust gas from being concentrated in the center of the adsorbent and rushing away, thereby increasing the timeliness of the adsorbent to adsorb the exhaust gas;

[0031] In the present invention, a rotating shaft is rotated and penetrated inside the partition, bevel gears are fixed at both ends of the rotating shaft, a bevel gear ring meshing with the bevel gear is fixed on the outer wall of the fixed cylinder, and blades are fixed to the outer walls of the two fixed cylinders by bolts; when the rotating disk rotates, the rotating disk drives the blades at the bottom of the other rotating disk to rotate through the rotating shaft, so that fresh air from the outside can be discharged upward, and the residual exhaust gas can be re-discharged into the annular groove and the air storage duct through the upwelling fresh air, so as to re-purify the residual exhaust gas and avoid the residual exhaust gas from overflowing to the outside when the adsorbent is replaced later.

[0032] In the present invention, the purification box is rotated to continuously treat the waste gas when the adsorbent is replaced, and the purification box can seal the space in the purification bin where the adsorbent to be replaced is located when it rotates, so as to prevent the waste gas remaining in the purification bin from spilling to the outside. In addition, when the waste gas treatment is continued subsequently, the waste gas in the corresponding purification bin can be recovered and re-processed, so that the staff can safely replace the adsorbent later. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the three-dimensional structure of an exhaust gas treatment device provided in Example 1 of the present invention;

[0034] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of an exhaust gas treatment device provided in Example 1 of the present invention;

[0035] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a chassis of an exhaust gas treatment device provided in Example 1 of the present invention;

[0036] Figure 4 A schematic diagram of a three-dimensional exploded structure of a chassis of an exhaust gas treatment device provided in Example 1 of the present invention;

[0037] Figure 5 A schematic diagram of a three-dimensional exploded cross-sectional structure of a purification box and an L-shaped frame of an exhaust gas treatment device provided in Example 1 of the present invention;

[0038] Figure 6 A schematic three-dimensional cross-sectional structure diagram of an L-shaped frame of an exhaust gas treatment device provided in Example 1 of the present invention;

[0039] Figure 7 A schematic diagram of a three-dimensional exploded structure of a closing plate and a magnet of an exhaust gas treatment device provided in Example 1 of the present invention;

[0040] Figure 8 A schematic diagram of the three-dimensional structure of a chimney, a smoke collecting tube and a smoke return pipe of an exhaust gas treatment device provided in Example 1 of the present invention;

[0041] Fig. 9A schematic diagram of a three-dimensional exploded structure of a rotating disk, a rotating smoke exhaust hood and a connecting pipe of an exhaust gas treatment device provided in Example 1 of the present invention;

[0042] Fig.10 A schematic diagram of a three-dimensional cross-sectional structure of a rotating disk of an exhaust gas treatment device provided in Example 1 of the present invention;

[0043] Fig.11 This is a partial front view and cross-sectional structural schematic diagram of a purification box of an exhaust gas treatment device provided in Example 2 of the present invention.

[0044] In the figure: 1, base frame; 2, rotating table; 3, purification box; 4, air inlet pipe; 5, annular groove; 6, air storage channel; 7, closed ring; 8, rotating ring; 9, connecting pipe; 10, partition; 11, purification chamber; 12, adsorption frame; 13, adsorbent; 14, chimney; 15, fixed block; 16, slide rod; 17, tension spring; 18, L-shaped frame; 19, blocking block; 20, acid-base detection sensor; 21, through hole; 22, air inlet; 2 3. Wedge-shaped closing block; 24. Straight gear ring; 25. Driving motor; 26. Straight gear; 27. Smoke collecting tube; 28. Smoke guiding tube; 29. ​​Smoke return tube; 30. Disc; 31. First circular hole; 32. Closing plate; 33. Magnet; 34. Rotating disc; 35. Rotating smoke exhaust hood; 36. Oblique hole; 37. Rotating shaft; 38. Bevel gear ring; 39. Fixed tube; 40. Bevel gear; 41. Support wheel; 42. Blade; 43. Second circular hole. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Example 1

[0047] Reference Figure 1-Figure 10 A waste gas treatment device is used in the field of waste gas treatment, including a base frame 1, a rotating table 2 is rotatably connected to the top of the base frame 1, a purification box 3 is fixed to the top of the rotating table 2 by bolts, two purification chambers 11 are formed in the purification box 3 by a partition 10, an adsorption frame 12 is slidably connected in the two purification chambers 11, and one end of the adsorption frame 12 extends to the outside of the purification box 3, an adsorbent 13 for adsorbing waste gas is provided in the adsorption frame 12, and an air intake pipe 4 connected to the air storage channel 6 is fixed on the top of the base frame 1; the adsorbent 13 can be any one of activated carbon, molecular sieve, silica gel and ammonia coal slime.

[0048] Reference Figure 2 and Figure 3A driving motor 25 is fixed to the top of the base frame 1 by bolts, and a spur gear 26 is fixed to the output shaft of the driving motor 25 through a coupling. A spur gear ring 24 is fixed to the outer wall of the rotating table 2 by bolts, and the spur gear ring 24 is meshed with the spur gear 26.

[0049] Reference Figure 2-Figure 4 The device also includes an exhaust structure arranged in the base frame 1, which is used to alternately inject exhaust gas into the corresponding purification chamber 11, so that the exhaust gas can be treated simultaneously when the adsorbent 13 is replaced; the exhaust structure includes an annular groove 5 arranged on the top of the base frame 1, an air storage channel 6 is provided in the base frame 1, and the annular groove 5 is connected to the air storage channel 6, a closed ring 7 is fixed in the annular groove 5 by bolts, a second circular hole 43 is provided in the closed ring 7, a rotating ring 8 located above the closed ring 7 is rotatably connected in the annular groove 5, a connecting pipe 9 is fixedly penetrated on the bottom inner wall of the two purification chambers 11, the bottom ends of the two connecting pipes 9 are fixedly penetrated through the rotating ring 8 and fit with the top of the closed ring 7, and the second circular hole 43 cooperates with the connecting pipe 9, and the top inner wall of the two purification chambers 11 is fixedly penetrated with a smoke Chimney 14, a disc 30 is provided on the top of the purification box 3, and a plurality of supporting wheels 41 are fixed to the bottom of the disc 30 by bolts, and the supporting wheels 41 slide on the top of the purification box 3, and a first circular hole 31 matching with the chimney 14 is provided in the disc 30; when the rotating table 2 drives the purification box 3 to rotate 180°, the two connecting pipes 9 drive the rotating ring 8 to rotate 180°. At this time, the positions of the two connecting pipes 9 are interchanged, and the second circular hole 43 cooperates with the other connecting pipe 9, so as to inject waste gas into the corresponding purification bin 11, and then purify the waste gas when replacing the adsorbent 13. In addition, when the positions of the two adsorbents 13 are replaced, the two chimneys 14 are alternately matched with the first circular hole 31 to prevent the residual waste gas in the purification bin 11 where the adsorbent 13 to be replaced is located from spreading to the outside.

[0050] Reference Figure 2 , Figure 4 , Figure 5 and Figure 6The device also includes a detection structure arranged on the top of the base frame 1, which is used to detect the exhaust gas after adsorption by the adsorbent 13, and can replace the adsorbent 13 when the adsorbent 13 reaches the adsorption limit; the detection structure includes a fixed block 15 fixed to one side of the top of the base frame 1 by welding, and a sliding rod 16 is slidably penetrated in the fixed block 15, and an L-shaped frame 18 is welded on the end of the sliding rod 16 away from the annular groove 5, and the outer wall of the sliding rod 16 is provided with a tension spring 17 fixedly connected to the L-shaped frame 18, and the other end of the tension spring 17 is fixedly connected to the side of the fixed block 15 away from the annular groove 5, and the bottom of one side of the L-shaped frame 18 is slidably connected to the top of the disc 30 through a slide rail, and through holes 21 and air inlets 22 are provided on both sides of the purification box 3, and the through holes 21 and the air inlets 22 are connected to the corresponding purification bins 11, and the through holes 21 and the air inlets 22 are respectively located above the adsorption frame 12 and At the bottom, two blocking blocks 19 are fixed by bolts on one side of the L-shaped frame 18 close to the purification box 3, and the two blocking blocks 19 are used to close the through hole 21 and the air inlet 22. A acid-base detection sensor 20 is fixed by bolts on one side of the blocking block 19 located above. The acid-base detection sensor 20 detects whether the acidity and alkalinity of the gas after adsorption by the adsorbent 13 meet the standard; when the purification box 3 rotates, the two blocking blocks 19 are detached from the through hole 21 and the air inlet 22 on one side of the purification box 3, and the tension spring 17 is in a stretched state. When the purification box 3 rotates 180°, the two blocking blocks 19 re-close the through hole 21 and the air inlet 22 on the other side of the purification box 3 under the tension of the tension spring 17, and then close the through hole 21 and the air inlet 22 to prevent the exhaust gas from spreading to the outside, and the acid-base detection sensor 20 detects the gas adsorbed by the replaced adsorbent 13 again.

[0051] Reference Figure 5 and Figure 6 Wedge-shaped closing blocks 23 are fixed to the inner walls on both sides of the through hole 21 and the air inlet 22 that are away from each other, and inclined surfaces are provided on both sides of the closing block 19, and the inclined surfaces cooperate with the wedge-shaped closing blocks 23; when the purification box 3 rotates, through the cooperation of the wedge-shaped closing block 23 and the inclined surface, not only can the two closing blocks 19 be smoothly separated from the through hole 21 and the air inlet 22, but the through hole 21 and the air inlet 22 can also be closed to avoid the overflow of exhaust gas when the exhaust gas is purified.

[0052] Reference Figure 2 and Figure 7 The inner walls of the two purification chambers 11 on the side away from each other are rotatably connected with a closing plate 32 through a base, and the closing plate 32 is used to close the through hole 21. A magnet 33 is fixedly embedded on one side of the closing plate 32, and the purification box 3 is made of magnetic metal, and magnetism is generated between the magnet 33 and the purification box 3; when the purification box 3 rotates 180°, the blocking block 19 is separated from the through hole 21, and the cooperation of the closing plate 32 and the magnet 33 can close the through hole 21 in time, so as to prevent the residual exhaust gas in the purification chamber 11 from overflowing to the outside through the through hole 21.

[0053] Reference Figure 2 , Figure 3 ,and Figure 8 The device also includes a circulation structure arranged on the top of the purification box 3, which is used to re-purify the exhaust gas in the purification chamber 11 where the adsorbent 13 that has reached the adsorption limit is located, so as to prevent the residual exhaust gas from escaping to the outside when the adsorbent 13 is replaced later; the circulation structure includes a smoke collecting tube 27 fixed to the top of the purification box 3 by bolts, and the top of the smoke collecting tube 27 is rotatably connected to the bottom of the disc 30, and both sides of the smoke collecting tube 27 are connected to the two chimneys 14 through the smoke guide pipe 28, and the bottom end of the smoke collecting tube 27 is fixedly connected to the smoke return pipe 29, and the bottom end of the smoke return pipe 29 is fixedly penetrated through the purification box 3. The smoke return pipe 29 is a smoke return pipe that is mounted on a hopper 14 and a smoke collecting tube 27. ...

[0054] Reference Figure 2 , Fig. 9 and Fig.10 The top ends of the two connecting pipes 9 are rotatably connected with a rotating disk 34, and a plurality of inclined holes 36 are provided in the rotating disk 34. A rotating smoke hood 35 is fixed to the top of the rotating disk 34 by bolts, and the inclined holes 36 are all covered by the rotating smoke hood 35, and the air inlet 22 is located below the rotating disk 34; when the exhaust gas flows into the purification chamber 11 through the connecting pipe 9, the exhaust gas enters the rotating smoke hood 35. Under the action of the rotating smoke hood 35, the exhaust gas pushes the rotating smoke hood 35 to rotate. In addition, when the exhaust gas passes through the inclined holes 36, it also pushes the rotating disk 34 to rotate. At this time, when the rotating smoke hood 35 and the rotating disk 34 rotate at the same time, the exhaust gas in the connecting pipe 9 overflows to the surroundings, avoiding the exhaust gas from concentrating in the center of the adsorbent 13 and rushing away, thereby increasing the timeliness of the adsorbent 13 for adsorbing the exhaust gas.

[0055] Example 2

[0056] refer to Fig.11, based on the improvement of Example 1: a rotating shaft 37 is rotatably penetrated in the partition 10, and the rotating shaft 37 rotates and penetrates the smoke return pipe 29, and the two ends of the rotating shaft 37 extend into the two purification chambers 11 respectively and are fixed with bevel gears 40, and the bottoms of the two rotating disks 34 are fixed with fixed cylinders 39 by bolts, and the outer walls of the fixed cylinders 39 are fixed with bevel gear rings 38 meshing with the bevel gears 40 by bolts, and the outer walls of the two fixed cylinders 39 are fixed with blades 42 by bolts; when the rotating disk 34 rotates, the rotating disk 34 Another rotating disk 34 is driven to rotate through the cooperation of the bevel gear ring 38, the bevel gear 40 and the rotating shaft 37. The rotating disk 34 drives the blades 42 to rotate. The blades 42 discharge the fresh air from the outside upward through the air inlet 22. The fresh air can blow the residual exhaust gas above and below the adsorbent 13 that has reached the adsorption limit upward, and then the residual exhaust gas can be re-discharged into the annular groove 5 and the air storage channel 6, so as to purify the residual exhaust gas again, so as to avoid the residual exhaust gas from being dispersed to the outside when the adsorbent 13 is replaced later.

[0057] A method for using an exhaust gas treatment device comprises the following steps:

[0058] S1. Exhaust gas is injected into the annular groove 5 and the air storage channel 6 through the air intake pipe 4. The exhaust gas enters the purification chamber 11 through the second circular hole 43 and the connecting pipe 9. The adsorbent 13 adsorbs and separates the acidic substances and nitrogen oxide harmful substances in the exhaust gas to achieve the purpose of purification. The purified exhaust gas is discharged to the outside through the chimney 14 and the first circular hole 31. At the same time, the exhaust gas adsorbed by the adsorbent 13 is detected by the acid-base detection sensor 20;

[0059] S2. When the adsorption capacity of the adsorbent 13 reaches the limit and needs to be replaced, the acid-base detection sensor 20 can detect that the pH value of the exhaust gas after adsorption by the adsorbent 13 is not up to standard, and the drive motor 25 is started. The drive motor 25 drives the rotating table 2 and the purification box 3 to rotate 180° through the cooperation of the spur gear 26 and the spur gear ring 24. When the purification box 3 rotates, the wedge-shaped closing block 23 and the inclined surface of the blocking block 19 are cooperated to push the blocking block 19 and the L-shaped frame 18 to slide outward until the two blocking blocks 19 are inserted from the through holes 21 and the inlet of the purification box 3. The exhaust gas below the adsorption frame 12 floats upward, and the exhaust gas is prevented from escaping to the outside through the air inlet 22. When the purification box 3 rotates 180°, the two blocking blocks 19 reclose the through hole 21 and the air inlet 22 on the other side of the purification box 3 under the tension of the tension spring 17.

[0060] S3. When the purification box 3 rotates, the purification box 3 drives the connecting pipe 9 to rotate through the rotating ring 8, and one of the connecting pipes 9 is disengaged from the second circular hole 43, and the exhaust gas in the annular groove 5 cannot enter the purification box 3, and one of the chimneys 14 is disengaged from the first circular hole 31, and the exhaust gas not adsorbed above the adsorption frame 12 cannot be discharged to the outside. When the purification box 3 rotates 180°, the other connecting pipe 9 and the chimney 14 are aligned with the blade 42 and the first circular hole 31 respectively, and the exhaust gas in the annular groove 5 can be adsorbed by the new adsorbent 13;

[0061] S4. When the exhaust gas flows into the purification chamber 11 through the connecting pipe 9, the exhaust gas enters the rotating exhaust hood 35. Under the action of the rotating exhaust hood 35, the exhaust gas pushes the rotating exhaust hood 35 to rotate. In addition, when the exhaust gas passes through the inclined hole 36, it also pushes the rotating disk 34 to rotate. At this time, when the rotating exhaust hood 35 and the rotating disk 34 rotate at the same time, the exhaust gas in the connecting pipe 9 overflows to the surroundings, avoiding the exhaust gas from concentrating in the center of the adsorbent 13 and rushing away, thereby increasing the timeliness of the adsorbent 13 to adsorb the exhaust gas;

[0062] S5. When the rotating disk 34 rotates, the rotating disk 34 drives another rotating disk 34 to rotate through the cooperation of the bevel gear ring 38, the bevel gear 40 and the rotating shaft 37. The rotating disk 34 drives the blades 42 to rotate. The blades 42 discharge the fresh air from the outside through the air inlet 22 upward. The fresh air can blow the residual exhaust gas above and below the adsorbent 13 that has reached the adsorption limit upward. The residual exhaust gas enters the return smoke pipe 29 through the chimney 14, the smoke guide pipe 28 and the smoke collecting tube 27. The return smoke pipe 29 re-discharges the residual exhaust gas into the annular groove 5 and the air storage channel 6 to purify the residual exhaust gas again to avoid the residual exhaust gas from spreading to the outside when the adsorbent 13 is replaced later. Then the adsorption frame 12 can be taken out from the purification box 3 to replace the adsorbent 13 that has reached the adsorption limit. The exhaust gas can be treated in the same way when the adsorbent 13 is replaced.

[0063] However, as is well known to those skilled in the art, the working principles and wiring methods of the acid-base detection sensor 20 and the drive motor 25 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An exhaust gas treatment device, comprising a base frame (1), characterized in that: The top of the base frame (1) is rotatably connected to a rotating table (2), the top of the rotating table (2) is fixed with a purification box (3) by bolts, two purification chambers (11) are formed in the purification box (3) by a partition (10), and adsorption frames (12) are slidably connected in the two purification chambers (11), and one end of the adsorption frame (12) extends to the outside of the purification box (3), and an adsorbent (13) for adsorbing exhaust gas is provided in the adsorption frame (12), and an air intake pipe (4) connected to the air storage channel (6) is fixed to the top of the base frame (1); An exhaust structure is arranged in the base frame (1) and is used to alternately inject exhaust gas into the corresponding purification chamber (11), so that the exhaust gas can be treated simultaneously when the adsorbent (13) is replaced; A detection structure is arranged on the top of the base frame (1) and is used to detect the exhaust gas after being adsorbed by the adsorbent (13), and is capable of replacing the adsorbent (13) when the adsorbent (13) reaches its adsorption limit; The circulation structure is arranged at the top of the purification box (3) and is used to re-purify the waste gas in the purification chamber (11) where the adsorbent (13) that has reached the adsorption limit is located, so as to prevent the residual waste gas from being dispersed to the outside when the adsorbent (13) is replaced later.

2. The exhaust gas treatment device according to claim 1, characterized in that: The exhaust structure comprises an annular groove (5) arranged at the top of the base frame (1), an air storage passage (6) is arranged in the base frame (1), and the annular groove (5) is connected with the air storage passage (6), a closed ring (7) is fixed in the annular groove (5) by bolts, a second circular hole (43) is arranged in the closed ring (7), a rotating ring (8) located above the closed ring (7) is rotatably connected in the annular groove (5), and a connecting pipe (9) is fixedly penetrated through the inner wall of the bottom of the two purification chambers (11), and the two connecting pipes (9) are The bottom ends are fixedly passed through the rotating ring (8) and fit with the top of the closed ring (7), and the second circular hole (43) matches with the connecting pipe (9). The top inner walls of the two purification chambers (11) are fixedly passed through with a chimney (14). A disc (30) is provided on the top of the purification box (3). A plurality of supporting wheels (41) are fixed to the bottom of the disc (30) by bolts, and the supporting wheels (41) slide on the top of the purification box (3). A first circular hole (31) matching with the chimney (14) is provided in the disc (30).

3. The exhaust gas treatment device according to claim 2, characterized in that: The detection structure comprises a fixed block (15) fixed to one side of the top of the base frame (1) by welding, a sliding rod (16) slidingly penetrates the fixed block (15), an L-shaped frame (18) is welded to one end of the sliding rod (16) away from the annular groove (5), a tension spring (17) fixedly connected to the L-shaped frame (18) is sleeved on the outer wall of the sliding rod (16), and the other end of the tension spring (17) is fixedly connected to one side of the fixed block (15) away from the annular groove (5), the bottom of one side of the L-shaped frame (18) is slidably connected to the top of the disc (30) by a slide rail, and both sides of the purification box (3) are provided with through holes (21) and air inlet holes. The through hole (21) and the air inlet (22) are both connected to the corresponding purification chamber (11), the through hole (21) and the air inlet (22) are respectively located above and below the adsorption frame (12), two blocking blocks (19) are fixed by bolts on one side of the L-shaped frame (18) close to the purification box (3), and the two blocking blocks (19) are used to close the through hole (21) and the air inlet (22), and an acid-base detection sensor (20) is fixed by bolts on one side of the blocking block (19) located above, and the acid-base detection sensor (20) is used to detect whether the acidity and alkalinity of the gas after adsorption by the adsorbent (13) meets the standard.

4. The exhaust gas treatment device according to claim 1, characterized in that: The circulation structure comprises a smoke collecting tube (27) fixed to the top of the purification box (3) by bolts, and the top of the smoke collecting tube (27) is rotatably connected to the bottom of the disc (30), and both sides of the smoke collecting tube (27) are connected to the two chimneys (14) through smoke guide pipes (28), and the bottom end of the smoke collecting tube (27) is fixedly connected to a smoke return pipe (29), and the bottom end of the smoke return pipe (29) is fixedly passed through the purification box (3) and the partition (10), and the bottom end of the smoke return pipe (29) is rotatably extended into the gas storage duct (6), and the outer walls of the smoke return pipe (29) and the two smoke guide pipes (28) are provided with one-way valves, and the one-way valves can prevent the exhaust gas from flowing back.

5. The exhaust gas treatment device according to claim 4, characterized in that: A driving motor (25) is fixed to the top of the base frame (1) by bolts, a spur gear (26) is fixed to the output shaft of the driving motor (25) by a coupling, a spur gear ring (24) is fixed to the outer wall of the rotating table (2) by bolts, and the spur gear ring (24) is meshed with the spur gear (26).

6. The exhaust gas treatment device according to claim 3, characterized in that: Wedge-shaped closing blocks (23) are fixed to inner walls of both sides of the through hole (21) and the air inlet (22) that are away from each other. Inclined surfaces are provided on both sides of the blocking block (19), and the inclined surfaces match the wedge-shaped closing block (23).

7. The exhaust gas treatment device according to claim 2, characterized in that: The inner walls of the two purification chambers (11) on the side away from each other are both rotatably connected to a closing plate (32) via a base, and the closing plate (32) is used to close the through hole (21). A magnet (33) is fixedly embedded on one side of the closing plate (32), and the purification box (3) is made of magnetic metal, and magnetism is generated between the magnet (33) and the purification box (3).

8. The exhaust gas treatment device according to claim 3, characterized in that: The top ends of the two connecting pipes (9) are rotatably connected to a rotating disk (34), a plurality of inclined holes (36) are provided in the rotating disk (34), a rotating smoke exhaust hood (35) is fixed to the top of the rotating disk (34) by bolts, and the inclined holes (36) are covered by the rotating smoke exhaust hood (35), and the air inlet (22) is located below the rotating disk (34).

9. The exhaust gas treatment device according to claim 8, characterized in that: A rotating shaft (37) is rotatably passed through the partition (10), and the rotating shaft (37) is rotatably passed through the smoke return pipe (29). The two ends of the rotating shaft (37) extend into the two purification chambers (11) respectively and are fixed with bevel gears (40). The bottoms of the two rotating disks (34) are fixed with fixing cylinders (39) by bolts. The outer walls of the fixing cylinders (39) are fixed with bevel gear rings (38) meshing with the bevel gears (40) by bolts. The outer walls of the two fixing cylinders (39) are fixed with blades (42) by bolts.

10. The method for using the exhaust gas treatment device according to claim 9, characterized in that: The following steps are involved: S1. First, exhaust gas is injected into the annular groove (5) and the air storage channel (6) through the air inlet pipe (4), and the exhaust gas enters the purification chamber (11) through the second circular hole (43) and the connecting pipe (9). The adsorbent (13) adsorbs and separates the acidic substances and nitrogen oxide harmful substances in the exhaust gas, and the purified exhaust gas is discharged to the outside through the chimney (14) and the first circular hole (31); S2. Then, when the adsorption capacity of the adsorbent (13) reaches the limit and needs to be replaced, the acid-base detection sensor (20) can detect that the acid-base value of the exhaust gas after adsorption by the adsorbent (13) does not meet the standard, and the drive motor (25) is started. When the purification box (3) rotates 180 degrees, the two blocking blocks (19) re-close the through hole (21) and the air inlet (22) on the other side of the purification box (3) under the tension of the tension spring (17); S3, then, when the purification box (3) rotates, after the purification box (3) rotates 180 degrees, the other connecting pipe (9) and the chimney (14) are aligned with the blade (42) and the first circular hole (31) respectively, and at this time, the exhaust gas in the annular groove (5) can be adsorbed by the new adsorbent (13); S4. Secondly, when the exhaust gas flows into the purification chamber (11) through the connecting pipe (9), the exhaust gas enters the rotating exhaust hood (35). Under the action of the rotating exhaust hood (35), the exhaust gas pushes the rotating exhaust hood (35) to rotate. In addition, when the exhaust gas passes through the inclined hole (36), it also pushes the rotating disk (34) to rotate. At this time, when the rotating exhaust hood (35) and the rotating disk (34) rotate at the same time, the exhaust gas in the connecting pipe (9) overflows to the surroundings; S5. Finally, when the rotating disk (34) rotates, the remaining exhaust gas enters the smoke return pipe (29) through the chimney (14), the smoke guide pipe (28) and the smoke collecting tube (27). The smoke return pipe (29) discharges the remaining exhaust gas back into the annular groove (5) and the gas storage channel (6), thereby repurifying the remaining exhaust gas.

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