Efficient spraying device for waste gas treatment

Abstract

The invention discloses an efficient spraying device for waste gas treatment, and relates to the technical field of waste gas treatment, the efficient spraying device comprises a spraying tower and a spraying assembly, and further comprises an activated carbon replacing mechanism arranged on the spraying tower and used for replacing saturated activated carbon in the spraying tower, the activated carbon replacement mechanism comprises a feeding assembly for adding activated carbon, an anti-accumulation assembly for preventing the activated carbon from being accumulated together in the adding process, and an activated carbon cleaning assembly for cleaning the saturated activated carbon after replacement out of the spray tower. New activated carbon in the activated carbon storage box is conveyed into the activated carbon placement groove through the auger conveying screw rod, so that on the premise of not interrupting the waste gas treatment process, the saturated activated carbon is quickly replaced, the time and steps required for replacing the activated carbon are remarkably reduced, the continuity and efficiency of overall waste gas treatment are improved, and the waste gas treatment efficiency is improved. And waste gas treatment interruption caused by replacement of activated carbon due to shutdown is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas treatment, and in particular is a high-efficiency spraying device for waste gas treatment. Background Art

[0002] With the continuous development of industrial production, the problem of waste gas emissions has become increasingly serious, and the pollutants in the waste gas pose a serious threat to the environment and human health. In order to effectively treat the pollutants in the waste gas, waste gas treatment technology has received extensive attention and research. Among them, the spray tower, as a common waste gas treatment equipment, has been widely used due to its high treatment efficiency, simple operation, and convenient maintenance. In short, the efficient spray device for waste gas treatment uses a spray tower to spray the waste gas to remove pollutants that are easily soluble in water, and then uses activated carbon to purify pollutants that are not easily soluble in water. This device combines the advantages of the two waste gas treatment technologies, the spray tower and activated carbon, to achieve the effective removal of a variety of pollutants in the waste gas.

[0003] A waste gas treatment spray tower with publication number CN216825619U discloses a waste gas treatment spray tower, including a spray treatment tower body, an activated carbon adsorption device, an electron accelerated macromolecular rupture treatment device, a soil deodorization device, a resistance type uniform spray device, a sedimentation tank and a water tank. It belongs to the waste gas treatment technical field, specifically a waste gas treatment spray tower, which adopts a combination of spraying, soil deodorization decomposition, electric field rupture and active adsorption to achieve the technical effect of waste gas spray purification treatment. The setting of the resistance type uniform spray device increases the contact time and space between water and waste gas, and improves the effect of spray purification.

[0004] However, during the implementation of the above patent, a large amount of waste gas is treated, the frequency of activated carbon saturation is relatively fast, and it is inconvenient to replace the saturated activated carbon. It is necessary to shut down the machine to stop the waste gas from entering the interior of the spray tower, which not only wastes time, but also the replacement steps are very cumbersome, which brings inconvenience to the treatment of waste gas. In addition, during the process of automatic transportation and replacement of new activated carbon, the activated carbon is easy to pile up together, resulting in a decrease in the adsorption efficiency of the activated carbon. In addition, if the saturated activated carbon is still accumulated inside the spray tower after replacement, it is easy to affect the fluidity of the waste gas inside the spray tower. Summary of the invention

[0005] In order to solve the problems raised by the above background technology, the present invention proposes a high-efficiency spraying device for waste gas treatment.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A high-efficiency spraying device for waste gas treatment, comprising a spraying tower and a spraying assembly, and also comprising:

[0008] The activated carbon replacement mechanism is arranged on the spray tower and is used to replace the saturated activated carbon inside the spray tower, wherein:

[0009] The activated carbon replacement mechanism includes a feeding component for adding activated carbon, an anti-accumulation component for preventing activated carbon from accumulating during the adding process, and an activated carbon cleaning component for clearing the saturated activated carbon from the inside of the spray tower after replacement.

[0010] As a further preferred embodiment of the present technical solution: the feeding assembly comprises an activated carbon storage box fixedly mounted on the outside of the spray tower through a support frame, the activated carbon storage box is provided with a delivery pipe, an auger delivery screw is rotatably mounted on the activated carbon storage box, a part of the auger delivery screw is arranged inside the delivery pipe, another part of the auger delivery screw is arranged inside the activated carbon storage box, and a No. 1 transmission gear is fixedly mounted on the auger delivery screw;

[0011] It also includes a driving mechanism for driving the first transmission gear to rotate.

[0012] As a further preferred embodiment of the present technical solution: the anti-accumulation component includes a No. 2 transmission gear meshing with the No. 1 transmission gear, a transmission shaft is fixedly mounted on the No. 2 transmission gear, and the transmission shaft is rotatably connected to the spray tower, a No. 2 bevel gear is fixedly mounted on the end of the transmission shaft away from the No. 2 transmission gear, the No. 2 bevel gear is meshed and connected to the No. 1 bevel gear, a No. 1 connecting shaft is fixedly connected to the No. 1 bevel gear, and a push plate arranged in a ring array is fixedly mounted on the upper end of the No. 1 connecting shaft.

[0013] As a further preferred embodiment of the present technical solution: the activated carbon cleaning assembly includes a fixing frame fixedly connected to the inner wall of the spray tower, and a No. 2 connecting shaft is rotatably mounted on the fixing frame, and the No. 2 connecting shaft is connected to the lower end of the No. 1 connecting shaft through a universal joint, and a plurality of unloading plates arranged in a circular array are fixedly mounted on the lower end of the No. 2 connecting shaft, and the plurality of unloading plates are arranged at an incline.

[0014] As a further preferred embodiment of the present technical solution: an adsorption mechanism is installed inside the spray tower, and the adsorption mechanism includes a material guide trough fixedly connected to the inside of the spray tower, the material guide trough is connected to the activated carbon storage box through a conveying pipe, and a plurality of activated carbon placement troughs for placing activated carbon are arranged at the bottom end of the material guide trough, and a plurality of discharge troughs connected to the activated carbon placement trough are also arranged on the material guide trough, and a connecting disc is also arranged below the activated carbon placement trough, and the connecting disc is slidably connected to the spray tower, and a plurality of slot covers for covering the lower ends of the activated carbon placement troughs are arranged at the upper end of the connecting disc.

[0015] As a further preferred embodiment of the present technical solution: a magnet assembly is arranged below the adsorption mechanism, the magnet assembly includes a No. 2 electromagnet fixedly mounted on the inner wall of the spray tower, and a No. 1 electromagnet used in conjunction with the No. 2 electromagnet is arranged at the lower end of the connecting disc.

[0016] As a further preferred embodiment of the present technical solution: a waste residue collecting plate with an inclined upper surface is installed inside the spray tower, a No. 2 through hole for allowing waste gas to pass through is provided on the waste residue collecting plate, and the unloading plate is arranged in close contact with the upper surface of the waste residue collecting plate.

[0017] As a further preferred embodiment of the technical solution: a waste box is fixedly installed on the outer side of the spray tower, a box door is provided on the waste box, and a waste residue opening for connecting with the waste box is provided on the spray tower.

[0018] As a further preferred embodiment of the present technical solution: the spray tower is provided with a waste gas inlet for allowing waste gas to enter and a waste gas outlet for releasing pure waste gas.

[0019] As a further preferred embodiment of the present technical solution: the spray assembly includes a fixed block fixedly mounted on the inner wall of the spray tower and a fixed disc fixedly mounted on the fixed block, and the fixed disc is arranged below the waste residue collecting plate, a plurality of nozzles are arranged at the lower end of the fixed disc, and a plurality of No. 1 through holes are arranged on the fixed disc.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the new activated carbon in the activated carbon storage box is transported to the activated carbon placement tank through the auger conveying screw, which realizes the rapid replacement of saturated activated carbon without interrupting the exhaust gas treatment process, significantly reduces the time and steps required for replacing the activated carbon, improves the continuity and efficiency of the overall exhaust gas treatment, and effectively avoids the interruption of exhaust gas treatment caused by stopping the machine to replace the activated carbon.

[0022] 2. In the present invention, during the process of loading new activated carbon, the pushing plate is used to ensure that the new activated carbon can be evenly distributed in each activated carbon placement slot, thereby avoiding the problem of uneven accumulation of activated carbon inside the guide trough, which leads to a decrease in the exhaust gas treatment effect, and further improves the uniformity and efficiency of exhaust gas purification.

[0023] 3. In the present invention, the inclined unloading plate is driven to rotate through the linkage of the No. 1 connecting shaft and the universal joint, which effectively removes the saturated activated carbon accumulated on the waste residue collection plate, prevents the problem of obstruction of the normal circulation of waste gas due to waste residue accumulation, enhances the degree of automation, reduces the need for manual cleaning, and ensures the continuous unimpeded operation of the waste gas treatment process, thereby improving the stability and reliability of the waste gas treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a partial structural cross-sectional view of the present invention;

[0026] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0027] Figure 4 It is an exploded view of the local structure of the present invention;

[0028] Figure 5 for Figure 2 The enlarged schematic diagram at A in the middle;

[0029] Figure 6 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0030] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 8 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 3 .

[0032] Legend: 1. Spray tower; 11. Waste gas inlet; 12. Waste gas outlet; 13. Waste residue outlet; 2. Activated carbon replacement mechanism; 21. Feeding assembly; 211. No. 1 transmission gear; 212. Auger conveying screw; 213. Activated carbon storage box; 214. Conveying pipe; 215. Feeding port; 22. Anti-accumulation assembly; 221. No. 2 transmission gear; 222. Transmission shaft; 223. No. 1 bevel gear; 224. No. 2 bevel gear; 225. Push plate; 226. No. 1 connecting shaft; 23. Universal joint; 24. Activated carbon Activated carbon cleaning assembly; 241, No. 2 connecting shaft; 242, unloading plate; 243, fixing frame; 3, magnet assembly; 31, No. 1 electromagnet; 32, No. 2 electromagnet; 4, adsorption mechanism; 41, material guide trough; 42, unloading trough; 43, ventilation plate; 44, activated carbon placement trough; 45, connecting disc; 46, trough cover; 5, spray assembly; 51, fixing block; 52, fixing disc; 53, nozzle; 54, No. 1 through hole; 6, waste residue collection plate; 61, No. 2 through hole; 7, support frame; 8, waste box; 81, box door. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0034] Embodiment 1:

[0035] See also Figure 1-Figure 8 The present application provides a high-efficiency spray device for waste gas treatment, including a spray tower 1 and a spray assembly 5, and also includes an activated carbon replacement mechanism 2 arranged on the spray tower 1, which is used to replace the saturated activated carbon inside the spray tower 1, the activated carbon replacement mechanism 2 includes a feeding assembly 21 for adding activated carbon, an anti-accumulation assembly 22 for preventing the activated carbon from accumulating during the addition process, and an activated carbon cleaning assembly 24 for clearing the saturated activated carbon from the spray tower 1 after replacement, the feeding assembly 21 includes an activated carbon storage box 213 fixedly mounted on the outside of the spray tower 1 through a support frame 7, a conveying pipe 214 is arranged on the activated carbon storage box 213, an auger conveying screw 212 is rotatably mounted on the activated carbon storage box 213, and a part of the auger conveying screw 212 is arranged inside the conveying pipe 214, and another part of the auger conveying screw 212 is arranged inside the activated carbon storage box 213, a first transmission gear 211 is fixedly mounted on the auger conveying screw 212, and also includes a driving mechanism, specifically a driving motor for driving the first transmission gear 211 to rotate.

[0036] Specifically, when the saturated activated carbon inside the activated carbon placement tank 44 is discharged and the tank cover 46 is covered on the lower end of the activated carbon placement tank 44 again, the driving mechanism is started, and the driving mechanism is specifically a driving motor. The driving motor drives the No. 1 transmission gear 211 to rotate, and the No. 1 transmission gear 211 drives the auger conveying screw 212 to rotate. The auger conveying screw 212 conveys the unused activated carbon inside the activated carbon storage box 213 from the conveying pipe 214 to the inside of the guide tank 41. The rapid replacement of saturated activated carbon significantly reduces the time and steps required for replacing the activated carbon, improves the continuity and efficiency of the overall exhaust gas treatment, and effectively avoids the interruption of exhaust gas treatment due to shutdown for replacing activated carbon.

[0037] In this embodiment, an adsorption mechanism 4 is installed inside the spray tower 1, and the adsorption mechanism 4 includes a material guide trough 41 fixedly connected to the inside of the spray tower 1 for temporarily storing the transported activated carbon. The material guide trough 41 is connected to the activated carbon storage box 213 through the delivery pipe 214. A plurality of activated carbon placement troughs 44 for placing activated carbon are arranged at the bottom of the material guide trough 41. A plurality of feed troughs 42 that are connected to the activated carbon placement troughs 44 are also arranged on the material guide trough 41. A connecting disc 45 is also arranged below the activated carbon placement trough 44. The connecting disc 45 is slidably connected to the spray tower 1. A plurality of slot covers 46 for covering the lower ends of the activated carbon placement troughs 44 are arranged at the upper end of the connecting disc 45. The spray assembly 5 includes a fixed block 51 fixedly mounted on the inner wall of the spray tower 1 and a fixed disc 52 fixedly mounted on the fixed block 51. The fixed disc 52 is arranged below the waste residue collecting plate 6. A plurality of nozzles 53 are arranged at the lower end of the fixed disc 52. A plurality of No. 1 through holes 54 are provided on the disk 52, and a waste gas inlet 11 for allowing waste gas to enter and a waste gas outlet 12 for releasing pure waste gas are provided on the spray tower 1. Waste gas is injected into the spray tower 1 from the waste gas inlet 11. At the same time, the reagent is sprayed out through a plurality of nozzles 53 below the fixed disk 52. It should be noted that the nozzle 53 is a prior art and can be connected to an external delivery pump. The nozzle 53 sprays and separates pollutants that are easily soluble in water in the waste gas. The purified waste gas flows upward through the No. 1 through hole 54 on the fixed disk 52. When passing through the activated carbon placement groove 44, the activated carbon inside the activated carbon placement groove 44 can adsorb pollutant particles that are insoluble in water. A magnet assembly 3 is provided below the adsorption mechanism 4. The magnet assembly 3 includes a No. 2 electromagnet 32 ​​fixedly mounted on the inner wall of the spray tower 1, and a No. 1 electromagnet 31 used in conjunction with the No. 2 electromagnet 32 ​​is provided at the lower end of the connecting disk 45.

[0038] Specifically, the activated carbon will be in a saturated state after absorbing a large amount of pollutant particles. Therefore, the current direction of the first electromagnet 31 and the second electromagnet 32 ​​is firstly changed, and the principle of like magnets repelling each other and opposite magnets attracting each other is utilized to make the connecting disc 45 move downward along the inner wall of the spray tower 1. The connecting disc 45 drives the slot cover 46 to detach from the lower end of the activated carbon placement slot 44, so that the saturated activated carbon falls onto the waste residue collection plate 6 under the action of its own gravity. The current direction is then changed again, so that the first electromagnet 31 and the second electromagnet 32 ​​repel each other with like magnets, and the slot cover 46 is driven by the connecting disc 45 to slide upward and block the lower end opening of the activated carbon placement slot 44.

[0039] Embodiment 2:

[0040] On the basis of embodiment one, the anti-accumulation component 22 includes a second transmission gear 221 meshing with the first transmission gear 211, a transmission shaft 222 is fixedly installed on the second transmission gear 221, and the transmission shaft 222 is rotatably connected to the spray tower 1, a second bevel gear 224 is fixedly installed on the end of the transmission shaft 222 away from the second transmission gear 221, the second bevel gear 224 is meshed and connected with the first bevel gear 223, the first bevel gear 223 is fixedly connected to the first connecting shaft 226, and the first connecting shaft 226 is rotatably connected to the material guide trough 41, and the upper end of the No. 1 connecting shaft 226 is fixedly installed with a push plate 225 arranged in a ring array.

[0041] Specifically, in the process of conveying activated carbon, the No. 1 transmission gear 211 can drive the No. 2 transmission gear 221 to rotate, the No. 2 transmission gear 221 drives the transmission shaft 222 to rotate, the transmission shaft 222 drives the No. 2 bevel gear 224 to rotate, the No. 2 bevel gear 224 drives the No. 1 bevel gear 223 to rotate, the No. 1 bevel gear 223 drives the No. 1 connecting shaft 226 to rotate, and the No. 1 connecting shaft 226 drives the pushing plate 225 to rotate. The rotation of the pushing plate 225 causes the activated carbon conveyed to the inside of the guide trough 41 to fall from the discharge trough 42 into the inside of the activated carbon placement trough 44. At this point, the activated carbon conveyed to the inside of the guide trough 41 and piled together is evenly pushed into the inside of multiple activated carbon placement troughs 44 through the rotation of the pushing plate 225, thereby avoiding the problem of reduced exhaust gas treatment effect caused by the activated carbon piling up, and further improving the uniformity and efficiency of exhaust gas purification.

[0042] Embodiment three:

[0043] On the basis of Example 1, the activated carbon cleaning assembly 24 includes a fixed frame 243 fixedly connected to the inner wall of the spray tower 1, and a No. 2 connecting shaft 241 is rotatably installed on the fixed frame 243, and the No. 2 connecting shaft 241 is connected to the lower end of the No. 1 connecting shaft 226 through a universal joint 23, and a plurality of unloading plates 242 arranged in a circular array are fixedly installed on the lower end of the No. 2 connecting shaft 241, and the plurality of unloading plates 242 are arranged at an angle, and a waste residue collecting plate 6 with an inclined upper surface is installed inside the spray tower 1, and a No. 2 through hole 61 for allowing waste gas to pass through is provided on the waste residue collecting plate 6, and the unloading plate 242 is arranged in contact with the upper surface of the waste residue collecting plate 6, and a waste box 8 is fixedly installed on the outside of the spray tower 1, and a box door 81 is provided on the waste box 8, and a waste residue port 13 for being arranged through the waste box 8 is provided on the spray tower 1.

[0044] Specifically, in the process of preventing the activated carbon from being transported and piled up, the rotation of the No. 1 connecting shaft 226 can drive the No. 2 connecting shaft 241 to rotate through the universal joint 23, and the No. 2 connecting shaft 241 drives the inclined discharge plate 242 to rotate. The discharge plate 242 removes the saturated activated carbon on the waste slag collecting plate 6 from the upper surface of the waste slag collecting plate 6 to avoid excessive accumulation affecting the normal passage of the exhaust gas after spraying. It should be noted that the purpose of setting the No. 2 through hole 61 is to facilitate the circulation of the exhaust gas. The upper surface of the waste slag collecting plate 6 is inclined. Under the rotation of the discharge plate 242, the saturated activated carbon flows from the waste slag port 13 into the interior of the waste slag collecting plate 6, so as to timely remove the saturated activated carbon from the interior of the spray tower 1, and finally the purified qualified exhaust gas passes through the ventilation plate 43 and is discharged from the exhaust gas outlet 12.

[0045] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A high-efficiency spraying device for waste gas treatment, comprising a spraying tower (1) and a spraying assembly (5), characterized in that: Also includes: The activated carbon replacement mechanism (2) is arranged on the spray tower (1) and is used to replace the saturated activated carbon inside the spray tower (1), wherein: The activated carbon replacement mechanism (2) comprises a feeding component (21) for adding activated carbon, an anti-deposition component (22) for preventing activated carbon from being deposited during the addition process, and an activated carbon cleaning component (24) for clearing saturated activated carbon from the inside of the spray tower (1) after replacement.

2. The high-efficiency spraying device for waste gas treatment according to claim 1, characterized in that: The feeding assembly (21) comprises an activated carbon storage box (213) fixedly mounted on the outside of the spray tower (1) via a support frame (7), a delivery pipe (214) being arranged on the activated carbon storage box (213), an auger delivery screw (212) being rotatably mounted on the activated carbon storage box (213), a portion of the auger delivery screw (212) being arranged inside the delivery pipe (214), another portion of the auger delivery screw (212) being arranged inside the activated carbon storage box (213), and a first transmission gear (211) being fixedly mounted on the auger delivery screw (212); It also includes a driving mechanism for driving the first transmission gear (211) to rotate.

3. The high-efficiency spraying device for waste gas treatment according to claim 2 is characterized in that: The anti-accumulation component (22) comprises a second transmission gear (221) meshed with a first transmission gear (211); a transmission shaft (222) is fixedly mounted on the second transmission gear (221), and the transmission shaft (222) is rotationally connected to the spray tower (1); a second bevel gear (224) is fixedly mounted on one end of the transmission shaft (222) away from the second transmission gear (221); the second bevel gear (224) is meshedly connected with a first bevel gear (223); a first connecting shaft (226) is fixedly connected to the first bevel gear (223); and a push plate (225) arranged in a ring array is fixedly mounted on the upper end of the first connecting shaft (226).

4. The high-efficiency spraying device for waste gas treatment according to claim 3 is characterized in that: The activated carbon cleaning component (24) comprises a fixing frame (243) fixedly connected to the inner wall of the spray tower (1), and a second connecting shaft (241) is rotatably mounted on the fixing frame (243), and the second connecting shaft (241) is connected to the lower end of the first connecting shaft (226) through a universal joint (23), and a plurality of unloading plates (242) arranged in a ring array are fixedly mounted on the lower end of the second connecting shaft (241), and the plurality of unloading plates (242) are arranged in an inclined manner.

5. The high-efficiency spraying device for waste gas treatment according to claim 2, characterized in that: An adsorption mechanism (4) is installed inside the spray tower (1), and the adsorption mechanism (4) comprises a material guide trough (41) fixedly connected to the inside of the spray tower (1), the material guide trough (41) is connected to the activated carbon storage box (213) through a conveying pipe (214), a plurality of activated carbon placement troughs (44) for placing activated carbon are arranged at the bottom end of the material guide trough (41), a plurality of lower material troughs (42) connected to the activated carbon placement troughs (44) are also arranged on the material guide trough (41), and a connecting disc (45) is also arranged below the activated carbon placement trough (44), the connecting disc (45) is slidably connected to the spray tower (1), and a plurality of slot covers (46) for covering the lower ends of the activated carbon placement troughs (44) are arranged at the upper end of the connecting disc (45).

6. The high-efficiency spraying device for waste gas treatment according to claim 5, characterized in that: A magnet assembly (3) is provided below the adsorption mechanism (4), the magnet assembly (3) comprising a No. 2 electromagnet (32) fixedly mounted on the inner wall of the spray tower (1), and a No. 1 electromagnet (31) used in conjunction with the No. 2 electromagnet (32) is provided at the lower end of the connecting disc (45).

7. The high-efficiency spraying device for waste gas treatment according to claim 4, characterized in that: A waste residue collection plate (6) with an inclined upper surface is installed inside the spray tower (1), and a No. 2 through hole (61) for allowing waste gas to pass through is provided on the waste residue collection plate (6), and the discharge plate (242) is arranged in close contact with the upper surface of the waste residue collection plate (6).

8. The high-efficiency spraying device for waste gas treatment according to claim 1, characterized in that: A waste box (8) is fixedly installed on the outside of the spray tower (1), a box door (81) is provided on the waste box (8), and a waste residue opening (13) for being arranged in communication with the waste box (8) is provided on the spray tower (1).

9. The high-efficiency spraying device for waste gas treatment according to claim 1, characterized in that: The spray tower (1) is provided with a waste gas inlet (11) for allowing waste gas to enter and a waste gas outlet (12) for releasing pure waste gas.

10. The high-efficiency spraying device for waste gas treatment according to claim 1, characterized in that: The spray assembly (5) comprises a fixed block (51) fixedly mounted on the inner wall of the spray tower (1) and a fixed disc (52) fixedly mounted on the fixed block (51), wherein the fixed disc (52) is arranged below the waste residue collecting plate (6), a plurality of spray heads (53) are arranged at the lower end of the fixed disc (52), and a plurality of No. 1 through holes (54) are arranged on the fixed disc (52).

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