Chemical adding and mixing device for waste gas spraying

Abstract

The utility model discloses a dosing and mixing device for waste gas spraying, which belongs to the technical field of waste gas treatment and comprises a waste gas treatment chamber, a fixing frame, a fan, a gas outlet, a gas outlet, a dustproof net frame, a fan A, a waste water tank, a sealing door plate, a partition plate and a water pan. A gas outlet is embedded in the side of the fixing frame close to the interior of the waste gas treatment chamber. When the fan B blows carbon dioxide waste gas to be in contact with the arc-shaped surface of the air guide frame and flow to the exhaust port from the lower half part of the waste gas treatment chamber along the air guide frame, the carbon dioxide waste gas is in contact with the sodium hydroxide disinfectant sprayed in a large range again, and after the carbon dioxide is subjected to secondary purification treatment, the carbon dioxide is discharged. A worker opens an exhaust port to blow purified air to the outside, opens a sealing door plate to take out the water pan with collected waste water from the waste water tank, and carries the waste water to other processing sites for treatment.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, in particular to a dosing and mixing device for waste gas spraying. Background Art

[0002] Waste gas treatment is the work of treating industrial waste gas, such as dust particles, toxic and harmful gases, generated during the operation of various factories, so as to reduce the harm of industrial production waste gas to the environment. Therefore, a waste gas spray device is needed.

[0003] Among them, after searching, it was found that the application number is CN201921450323.5, which is an exhaust gas spray device. The exhaust gas spray device has a layered absorption mechanism that allows the acid mist exhaust gas mixed with dust of different particle sizes to be diverted after entering the spray tower body, avoiding the problem of mixing together and entering the packing layer at the same time to cause the packing layer to be blocked, and at the same time effectively improves the quality of the acid mist exhaust gas spray treatment and ensures the efficient treatment of the exhaust gas; among them, the shortcomings are as follows:

[0004] When the staff uses this type of waste gas spray device to spray and purify the waste gas, the acid mist waste gas enters the spray tower body, and the dust of different particle sizes is diverted by the layered absorption mechanism. The dust particles in the waste gas are adsorbed and removed by the spray component, and then purified by the packing layer. The spray head in the spray component that treats the dust particles in the waste gas is fixed and cannot be moved, resulting in the spray head being unable to spray the atomized agent over a large range to treat the waste gas, resulting in low purification efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a dosing and mixing device for waste gas spraying in order to solve the problem that the waste gas purification treatment efficiency of the above-mentioned waste gas spraying device is low.

[0006] The technical solution adopted by the utility model is as follows: a dosing and mixing device for waste gas spraying, comprising a waste gas treatment chamber, a fixed frame, a fan, an air outlet, an exhaust port, a dustproof mesh frame, a fan A, a waste water tank, a sealing door panel, a partition and a water receiving tray, a fixed frame is fixedly installed on the upper side of the waste gas treatment chamber, a fan is arranged inside the fixed frame, an air outlet is embedded in the side of the fixed frame near the inside of the waste gas treatment chamber, the fan and the air outlet are connected through an air guide pipe, the upper part of the fan is connected to the waste gas discharge pipe of the smelter through the air guide pipe, an exhaust port is embedded in the lower side of the waste gas treatment chamber near the lower part of the fixed frame, and the exhaust port slides on the side A dustproof grid frame is provided, and the dustproof grid frame and the exhaust port are connected by bolts, a fan A is rotatably arranged on the side of the dustproof grid frame near the exhaust port, a waste water tank is embedded under the inner wall of the exhaust gas treatment chamber, a sealing door panel is hingedly arranged in front of the waste water tank, a water receiving pan is arranged on the inner side of the water tank near the rear of the sealing door panel, a partition is fixedly installed between the side of the inner wall of the exhaust gas treatment chamber near the fixed frame and the exhaust port, a spray purification mechanism capable of performing large-scale disinfection and purification of carbon dioxide exhaust gas is arranged inside the exhaust gas treatment chamber, and a rotating sterilization mechanism capable of performing large-scale sterilization treatment of carbon dioxide exhaust gas is arranged in the middle of the exhaust gas treatment chamber.

[0007] Among them, the spray purification mechanism is composed of an air guide frame, a support frame, a fan B, a sodium hydroxide disinfectant water tank, a water pump B, an atomizing nozzle B, a servo motor B, and a spray frame. The air guide frame is relatively fixedly installed on the inner wall of the side of the exhaust gas treatment chamber in the longitudinal direction, and the opposite surface of the air guide frame is arranged in an arc shape. Support frames are slidably arranged at the upper and lower sides of the exhaust gas treatment chamber near the air guide frame, and the support frame and the outer wall of the exhaust gas treatment chamber are connected by bolts. The fan B is rotatably arranged on the side of the support frame, and the exhaust gas treatment chamber is fixedly installed above the exhaust gas treatment chamber. A servo motor B is connected to a spray rack through an output shaft, and the spray rack is in a truncated cone shape. Atomizing nozzles B are embedded on all four sides of the spray rack. There are several atomizing nozzles B, and every two are arranged longitudinally in parallel in an inclined manner and are equidistantly arranged around. A sodium hydroxide disinfectant water tank is fixedly installed above the exhaust gas treatment chamber near the servo motor B, a water pump B is embedded in front of the sodium hydroxide disinfectant water tank, and the sodium hydroxide disinfectant water tank, the water pump B and the tail ends of several atomizing nozzles B are connected by a water hose.

[0008] Among them, the rotating sterilization mechanism is composed of a servo motor A, a rotating rod, a drug guide rack, a drug delivery rack, an atomizing nozzle A, a quaternary ammonium salt disinfectant water tank, and a water pump A. A servo motor A is fixedly installed on the upper side of the waste gas treatment chamber near the side of the servo motor B, and the servo motor A is connected to the rotating rod through an output shaft. A drug guide rack is rotatably arranged between the side of the waste gas treatment chamber and the partition through a bearing, and the drug guide rack is arranged in a hollow cylindrical shape, and a chain transmission is arranged between the rotating rod and the drug guide rack. An atomizing nozzle A is laterally embedded in the outer wall of the drug guide rack. There are several atomizing nozzles A, which are equidistant and parallel, and centrally symmetrically arranged. A drug delivery rack is nested and rotatably arranged at the side opening of the drug guide rack through bearings and sealing rings. A quaternary ammonium salt disinfectant water tank is fixedly installed on the upper side of the waste gas treatment chamber near the servo motor A, and a water pump A is embedded in the front of the quaternary ammonium salt disinfectant water tank, and the quaternary ammonium salt disinfectant water tank, water pump A and the tail end of the drug delivery rack are connected through a water pipe.

[0009] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0010] 1. This type of waste gas spraying dosing and mixing device is provided with a spray rack and a fan B, so that the staff can turn on the servo motor B to drive the spray rack to rotate continuously clockwise and counterclockwise, and at the same time turn on the water pump B to spray the sodium hydroxide disinfectant in the sodium hydroxide disinfectant tank from the continuously rotating atomizing nozzle B. The atomized sodium hydroxide disinfectant contacts a large amount of carbon dioxide waste gas, and dust particles are adsorbed by the atomized sodium hydroxide disinfectant while purifying the carbon dioxide, and the sodium hydroxide disinfectant falls into the water receiving tray in the wastewater tank for collection. The staff then turns on the two fans B, so that the fan B blows the carbon dioxide waste gas to contact the curved surface of the air guide frame, and when it flows along the air guide frame from the lower half of the waste gas treatment chamber to the exhaust port, the carbon dioxide waste gas will contact the sodium hydroxide disinfectant sprayed on a large scale again, and the carbon dioxide will be purified for a second time, thereby improving the effect of large-scale and efficient purification of carbon dioxide waste gas.

[0011] 2. The waste gas spraying dosing and mixing device is provided with a drug guide rack, so that the staff can turn on the water pump B to spray the sodium hydroxide disinfectant in the sodium hydroxide disinfectant water tank from a plurality of inclined and continuously rotating atomizing nozzles B through the water guide hose to spray the atomized sodium hydroxide disinfectant. At the same time, turn on the servo motor A to drive the outer chain of the rotating rod to drive the drug guide rack to rotate through the bearing, and drive the plurality of atomizing nozzles A on the outer wall of the drug guide rack to rotate. Turn on the water pump A to introduce the quaternary ammonium salt sterilizer in the quaternary ammonium salt sterilizer water tank from the drug delivery rack into the drug guide rack through the water guide pipe, and spray a large range of atomized quaternary ammonium salt sterilizer from the plurality of rotating atomizing nozzles A on the outer wall of the drug guide rack, so that the large range of atomized quaternary ammonium salt sterilizer and the atomized sodium hydroxide disinfectant are mixed with each other and contact the carbon dioxide waste gas at the same time, and the bacteria and carbon dioxide carried by the carbon dioxide waste gas are efficiently purified and treated, and the carbon dioxide waste gas is sprayed and mixed by two different agents, and the carbon dioxide waste gas is efficiently purified and sterilized at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the waste gas spray purification device of the utility model;

[0013] Figure 2 This is a schematic diagram of the front cross-sectional structure of the waste gas spray purification device in the utility model;

[0014] Figure 3 For the utility model Figure 2 The enlarged schematic diagram of the structure at A in the middle;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the medicine guide rack in the utility model from the front view.

[0016] Markings in the figure: 1. Waste gas treatment chamber; 101. Fixed frame; 102. Fan; 103. Air outlet; 104. Exhaust port; 105. Dust-proof mesh frame; 106. Fan A; 107. Waste water tank; 108. Sealing door panel; 109. Partition; 2. Water collection tray; 3. Air guide frame; 4. Servo motor A; 401. Rotating rod; 5. Medicine guide frame; 501. Medicine delivery frame; 502. Atomizing nozzle A; 6. Support frame; 601. Fan B; 7. Quaternary ammonium salt disinfectant water tank; 701. Water pump A; 8. Sodium hydroxide disinfectant water tank; 801. Water pump B; 802. Atomizing nozzle B; 9. Servo motor B; 901. Spraying rack. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the utility model:

[0019] Reference Figure 1-4 A dosing and mixing device for waste gas spraying, comprising a waste gas treatment chamber 1, a fixed frame 101, a fan 102, an air outlet 103, an exhaust port 104, a dustproof mesh frame 105, a fan A106, a waste water tank 107, a sealing door panel 108, a partition 109 and a water receiving tray 2, wherein the fixed frame 101 is fixedly installed on the upper side of the waste gas treatment chamber 1, the fan 102 is arranged inside the fixed frame 101, and the air outlet 103 is embedded in the side of the fixed frame 101 near the waste gas treatment chamber 1, the fan 102 and the air outlet 103 are connected through an air guide pipe, the upper part of the fan 102 is connected to the waste gas discharge pipe of the smelter through the air guide pipe, the exhaust port 104 is embedded in the lower part of the waste gas treatment chamber 1 near the lower part of the fixed frame 101, and the exhaust port 104 is embedded on the side of the exhaust port 104. A dustproof grid frame 105 is slidingly arranged, and the dustproof grid frame 105 and the exhaust port 104 are connected by bolts, a fan A106 is rotatably arranged on the side of the dustproof grid frame 105 near the exhaust port 104, a waste water tank 107 is embedded at the lower part of the inner wall of the exhaust gas treatment chamber 1, a sealing door panel 108 is hingedly arranged in front of the waste water tank 107, a water receiving tray 2 is arranged on the inner side of the water tank 107 near the rear of the sealing door panel 108, a partition 109 is fixedly installed between the fixed frame 101 and the exhaust port 104 on the side of the inner wall of the exhaust gas treatment chamber 1, a spray purification mechanism capable of performing large-scale disinfection and purification of carbon dioxide exhaust gas is arranged inside the exhaust gas treatment chamber 1, and a rotating sterilization mechanism capable of performing large-scale sterilization treatment of carbon dioxide exhaust gas is arranged in the middle of the exhaust gas treatment chamber 1.

[0020] Reference Figure 1-3 ,Furthermore, the spray purification mechanism is composed of an air guide frame 3, a support frame 6, a fan B601, a sodium hydroxide disinfectant water tank 8, a water pump B801, an atomizing nozzle B802, a servo motor B9, and a spraying rack 901;

[0021] An air guide frame 3 is relatively fixedly installed on the inner wall of the side of the exhaust gas treatment chamber 1 in the longitudinal direction, and the opposite surface of the air guide frame 3 is arranged in an arc shape. Support frames 6 are slidably arranged on the upper and lower sides of the exhaust gas treatment chamber 1 near the air guide frame 3, and the support frame 6 and the outer wall of the exhaust gas treatment chamber 1 are connected by bolts. A fan B601 is rotatably arranged on the side of the support frame 6. A servo motor B9 is fixedly installed above the exhaust gas treatment chamber 1. The servo motor B9 is connected to a spray frame 901 through an output shaft, and the spray frame 901 is arranged in a truncated cone shape. Atomizing nozzles B802 are embedded on all sides of the spray frame 901. The atomizing nozzles B802 have There are 100, and every two of them are arranged in parallel longitudinally in an inclined shape and are equidistantly arranged around. A sodium hydroxide disinfectant water tank 8 is fixedly installed above the exhaust gas treatment chamber 1 near the servo motor B9, and a water pump B801 is embedded in front of the sodium hydroxide disinfectant water tank 8. The tail ends of the sodium hydroxide disinfectant water tank 8, the water pump B801 and several atomizing nozzles B802 are connected by a water hose. When the staff needs to purify a large amount of carbon dioxide waste gas generated by the long-term operation of the smelter, the fan 102 is turned on to discharge the carbon dioxide waste gas into the exhaust gas treatment chamber 1 through the outlet 103 at one end of the air guide pipe, and the servo motor is turned on. B9 drives the atomizing nozzles B802 on the outer wall of the spraying rack 901 to rotate clockwise and counterclockwise continuously, and turns on the water pump B801 to spray the sodium hydroxide disinfectant in the sodium hydroxide disinfectant tank 8 through the water guide hose from the atomizing nozzles B802 that are tilted and rotate continuously to contact a large amount of carbon dioxide waste gas. At the same time, the dust particles carried in the carbon dioxide waste gas are adsorbed by the atomized sodium hydroxide disinfectant, and the sodium hydroxide disinfectant contacts the carbon dioxide waste gas in a large range to purify the carbon dioxide, and the sodium hydroxide disinfectant falls into the wastewater tank 10. 7 is collected in the water collecting tray 2, and the staff then turns on the two fans B601 to make the fan B601 blow the carbon dioxide waste gas to contact the curved surface of the air guide frame 3, and when it flows along the air guide frame 3 from the lower half of the waste gas treatment chamber 1 to the exhaust port 104, the carbon dioxide waste gas will again contact the sodium hydroxide disinfectant sprayed on a large scale. After the carbon dioxide is purified for the second time, the staff opens the exhaust port 104 to blow the purified air out to the outside, and opens the sealing door panel 108 to take the water collecting tray 2 with waste water collected from the wastewater tank 107, and carry the waste water to other processing sites for treatment.

[0022] Reference Figure 1 , 2 4. Further, the rotating sterilization mechanism is composed of a servo motor A4, a rotating rod 401, a drug guide rack 5, a drug delivery rack 501, an atomizing nozzle A502, a quaternary ammonium salt sterilizer water tank 7, and a water pump A701;

[0023] A servo motor A4 is fixedly installed on the upper side of the waste gas treatment chamber 1 near the servo motor B9, and the servo motor A4 is connected to a rotating rod 401 through an output shaft. A drug guide rack 5 is rotatably arranged between the side of the waste gas treatment chamber 1 and the partition 109 through a bearing, and the drug guide rack 5 is arranged in a hollow cylindrical shape, and a chain transmission is arranged between the rotating rod 401 and the drug guide rack 5. An atomizing nozzle A502 is laterally embedded in the outer wall of the drug guide rack 5. There are several atomizing nozzles A502, which are equidistantly arranged in parallel and centrally symmetrically arranged. A drug delivery rack 501 is rotatably arranged at the side opening of the drug guide rack 5 through bearings and sealing rings. A quaternary ammonium salt disinfectant water tank 7 is fixedly installed on the upper side of the waste gas treatment chamber 1 near the servo motor A4, and a water pump A701 is embedded in the front of the quaternary ammonium salt disinfectant water tank 7, and the tail ends of the quaternary ammonium salt disinfectant water tank 7, the water pump A701 and the drug delivery rack 501 are connected by The water pipe is connected. When the staff turns on the water pump B801, the sodium hydroxide disinfectant in the sodium hydroxide disinfectant water tank 8 is sprayed out from a plurality of inclined and continuously rotating atomizing nozzles B802 through the water hose. At the same time, the servo motor A4 is turned on to drive the outer chain of the rotating rod 401 to drive the medicine guide frame 5 to rotate through the bearing, and drives the plurality of atomizing nozzles A502 on the outer wall of the medicine guide frame 5 to rotate. Then, the water pump A701 is turned on to introduce the quaternary ammonium salt sterilizer in the quaternary ammonium salt sterilizer water tank 7 into the medicine guide frame 5 through the water pipe from the medicine delivery frame 501, and a large-scale atomized quaternary ammonium salt sterilizer is sprayed out from the plurality of rotating atomizing nozzles A502 on the outer wall of the medicine guide frame 5, so that the large-scale atomized quaternary ammonium salt sterilizer is mixed with the atomized sodium hydroxide disinfectant and contacts with the carbon dioxide waste gas at the same time, and the bacteria and carbon dioxide carried by the carbon dioxide waste gas are efficiently purified.

[0024] Reference Figure 1-3 Furthermore, the fan 102, the fan A106, the servo motor A4, the fan B601, the water pump A701, the water pump B801 and the servo motor B9 are all electrically connected to an external power supply through the control panel.

[0025] Working principle: First, when the staff needs to purify the large amount of carbon dioxide waste gas generated by the long-term operation of the smelter, turn on the fan 102 to discharge the carbon dioxide waste gas into the waste gas treatment chamber 1 through the outlet 103 at one end of the air guide pipe, and turn on the servo motor B9 to drive the multiple atomizing nozzles B802 on the outer wall of the spraying rack 901 to rotate clockwise and counterclockwise continuously, and then turn on the water pump B801 to spray the sodium hydroxide disinfectant in the sodium hydroxide disinfectant tank 8 through the water guide hose from the multiple inclined and continuously rotating atomizing nozzles B802 to contact the large The carbon dioxide waste gas is measured, and then the staff turns on the water pump B801 to spray the sodium hydroxide disinfectant in the sodium hydroxide disinfectant water tank 8 from a plurality of inclined and continuously rotating atomizing nozzles B802 through the water guide hose to spray the atomized sodium hydroxide disinfectant. At the same time, the servo motor A4 is turned on to drive the outer chain of the rotating rod 401 to drive the medicine guide rack 5 to rotate through the bearing, and drives the plurality of atomizing nozzles A502 on the outer wall of the medicine guide rack 5 to rotate. The water pump A701 is turned on to introduce the quaternary ammonium salt disinfectant in the quaternary ammonium salt disinfectant water tank 7 from the medicine delivery rack 501 into the medicine guide rack 5 through the water guide pipe. A large range of atomized quaternary ammonium salt disinfectant is sprayed out from a plurality of rotating atomizing nozzles A502 on the outer wall, so that the large range of atomized quaternary ammonium salt disinfectant is mixed with the atomized sodium hydroxide disinfectant, and at the same time contacts the carbon dioxide waste gas, and the bacteria and carbon dioxide carried by the carbon dioxide waste gas are efficiently purified. At the same time, the dust particles carried in the carbon dioxide waste gas are adsorbed by the atomized agent, while the sodium hydroxide disinfectant contacts the carbon dioxide waste gas on a large scale, purifies the carbon dioxide, and makes the sodium hydroxide disinfectant fall into the water receiving tray 2 in the wastewater tank 107 for collection. Finally, the workers The staff then turns on two fans B601, so that the fan B601 blows the carbon dioxide waste gas to contact the curved surface of the air guide frame 3, and when it flows along the air guide frame 3 from the lower half of the waste gas treatment chamber 1 to the exhaust port 104, the carbon dioxide waste gas will again contact the sodium hydroxide disinfectant and atomized quaternary ammonium salt bactericide sprayed on a large scale. After the carbon dioxide is purified for the second time, the staff opens the exhaust port 104 to blow the purified air out to the outside, and opens the sealing door panel 108 to take out the water receiving tray 2 that collects the waste water from the waste water tank 107, and carry the waste water to other processing sites for treatment.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dosing and mixing device for waste gas spraying, comprising a waste gas treatment chamber (1), a fixed frame (101), a fan (102), an air outlet (103), an exhaust port (104), a dustproof mesh frame (105), a fan A (106), a waste water tank (107), a sealing door plate (108), a partition (109) and a water receiving tray (2), wherein a fixed frame (101) is fixedly installed on the upper side of the waste gas treatment chamber (1), a fan (102) is arranged inside the fixed frame (101), an air outlet (103) is embedded in the side of the fixed frame (101) near the waste gas treatment chamber (1), the fan (102) and the air outlet (103) are connected by an air guide pipe, the fan (102) is connected to the waste gas discharge pipe of the smelter through the air guide pipe, and the waste gas treatment chamber (1) is provided with a fixed frame (101) on the upper side. (1) An exhaust port (104) is embedded and arranged below the fixed frame (101) on the side below, a dustproof net frame (105) is slidably arranged on the side of the exhaust port (104), and the dustproof net frame (105) and the exhaust port (104) are connected by bolts, a fan A (106) is rotatably arranged inside the dustproof net frame (105) on the side near the exhaust port (104), a waste water tank (107) is embedded and arranged below the inner wall of the exhaust gas treatment chamber (1), a sealing door plate (108) is hingedly arranged in front of the waste water tank (107), a water receiving tray (2) is arranged on the inner side of the water tank (107) near the rear of the sealing door plate (108), and a partition plate (109) is fixedly installed between the fixed frame (101) and the exhaust port (104) on the side of the inner wall of the exhaust gas treatment chamber (1), characterized in that: The waste gas treatment chamber (1) is provided with a spray purification mechanism capable of performing large-scale disinfection and purification of carbon dioxide waste gas, and the waste gas treatment chamber (1) is provided with a rotating sterilization mechanism capable of performing large-scale sterilization treatment of carbon dioxide waste gas in the middle.

2. The dosing and mixing device for waste gas spraying according to claim 1, characterized in that: The spray purification mechanism is composed of an air guide frame (3), a support frame (6), a fan B (601), a sodium hydroxide disinfectant water tank (8), a water pump B (801), an atomizing nozzle B (802), a servo motor B (9), and a spraying frame (901); An air guide frame (3) is relatively fixedly installed on the inner wall of the side of the waste gas treatment chamber (1) in the longitudinal direction. Support frames (6) are slidably installed on the upper side and lower side of the waste gas treatment chamber (1) near the air guide frame (3), and the support frame (6) and the outer wall of the waste gas treatment chamber (1) are connected by bolts. A fan B (601) is rotatably installed on the side of the support frame (6). A servo motor B (9) is fixedly installed above the waste gas treatment chamber (1). The servo motor B (9) is connected to a spray frame (901) through an output shaft. Atomizing nozzles B (802) are embedded around the spray frame (901). A sodium hydroxide disinfectant water tank (8) is fixedly installed above the waste gas treatment chamber (1) near the servo motor B (9), and a water pump B (801) is embedded in front of the sodium hydroxide disinfectant water tank (8).

3. The dosing and mixing device for waste gas spraying according to claim 1, characterized in that: The rotating sterilization mechanism is composed of a servo motor A (4), a rotating rod (401), a medicine guide rack (5), a medicine delivery rack (501), an atomizing nozzle A (502), a quaternary ammonium salt sterilizing agent water tank (7), and a water pump A (701); A servo motor A (4) is fixedly installed on the upper side of the waste gas treatment chamber (1) near the servo motor B (9), and the servo motor A (4) is connected to a rotating rod (401) through an output shaft. A drug guide rack (5) is rotatably arranged between the side of the waste gas treatment chamber (1) and the partition (109) through a bearing, and an atomizing nozzle A (502) is laterally embedded in the outer wall of the drug guide rack (5). A drug delivery rack (501) is rotatably arranged at the side opening of the drug guide rack (5) through a bearing and a sealing ring. A quaternary ammonium salt disinfectant water tank (7) is fixedly installed on the upper side of the waste gas treatment chamber (1) near the servo motor A (4), and a water pump A (701) is embedded in the front of the quaternary ammonium salt disinfectant water tank (7).

4. The dosing and mixing device for waste gas spraying according to claim 2, characterized in that: The opposite surfaces of the air guide frame (3) are arranged in an arc shape, and the medicine spraying frame (901) is arranged in a truncated cone shape.

5. The dosing and mixing device for waste gas spraying according to claim 2, characterized in that: There are a plurality of atomizing nozzles B (802), and every two of them are arranged in parallel longitudinally in an inclined manner and are equidistantly arranged around each other. The sodium hydroxide disinfectant water tank (8), the water pump B (801) and the tail ends of the plurality of atomizing nozzles B (802) are connected by a water hose.

6. The dosing and mixing device for waste gas spraying as claimed in claim 3, characterized in that: The medicine guide rack (5) is arranged in a hollow cylindrical shape, the rotating rod (401) and the medicine guide rack (5) are connected by a chain transmission, there are a plurality of atomizing nozzles A (502), which are arranged in parallel and equidistantly and centrally symmetrically, and the quaternary ammonium salt disinfectant water tank (7), the water pump A (701) and the tail end of the medicine delivery rack (501) are connected by a water pipe.

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