Energy-saving and environment-friendly chemical waste gas spraying equipment

Abstract

The present application relates to chemical waste gas treatment technical field, provide a kind of energy-saving and environment-friendly type chemical waste gas spraying equipment, comprising: spray tank, the top of the spray tank is equipped with sprayer, the sprayer is located the top of the inner wall of spray tank, the bottom of the spray tank is equipped with sedimentation tank, the inner wall center of the sedimentation tank is provided with filter screen one, the top of the filter screen one is provided with bottom layer, in the embodiment of the present application, water in the wastewater layer in the bottom of sedimentation tank is extracted by water suction pump through input pipe, after extraction, it is sent to the upper side of filter screen two for secondary filtration by output pipe, further reduce dust and harmful substances in water, water drops to the inside of water outlet by filter screen two, then it is entered into the inside of water inlet box by water outlet, at this time, it flows into the inside of water storage tank for circulation by water inlet pipe two on the surface of water inlet box, further reduce the waste of water resources when spraying, reduce the cost of water.

Description

Technical Field

[0001] This invention relates to the field of chemical waste gas treatment technology, and in particular to an energy-saving and environmentally friendly chemical waste gas spraying device. Background Technology

[0002] With the continuous development of the chemical industry, the types of waste gases generated during chemical production are increasing. These waste gases often contain harmful substances such as dust particles, volatile organic compounds (VOCs), and acidic or alkaline gases. If they are discharged directly into the atmosphere without effective treatment, they will not only cause serious environmental pollution but also pose a threat to human health. Currently, spray towers are a commonly used purification device in the treatment of chemical waste gases. Their main principle is to utilize the contact reaction between liquid and waste gas to dissolve, absorb, or settle harmful substances in the waste gas, thereby achieving purification.

[0003] While existing spraying equipment can treat some harmful gases, it still has the following shortcomings during use: Significant water waste: Traditional spraying devices mostly use a single-use, direct discharge method, failing to effectively recover and recycle the spray liquid, resulting in high operating costs and contradicting the trend of energy conservation and environmental protection. Poor dust removal and liquid-gas separation: Some equipment lacks effective filtration and sedimentation structures, easily leading to incomplete separation of water and dust, resulting in turbid water that affects subsequent recycling and also easily clogging nozzles and drainage pipes. Inconvenient cleaning and maintenance: Traditional devices have enclosed internal structures and narrow spaces, causing exhaust gases to adhere to the inner walls of the equipment during spraying, forming scale and dust accumulation. Cleaning operations are complex and inefficient, affecting equipment operating efficiency and lifespan. Low automation and low operating efficiency: Some devices lack internal scraping devices or automatic cleaning mechanisms, leading to long-term accumulation of dust and impurities, increasing the frequency of manual intervention and maintenance workload, which is detrimental to continuous and stable operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies. Traditional spraying devices often rely on single-use water discharge, failing to effectively recycle and reuse the spray liquid, resulting in high operating costs and contradicting energy conservation and environmental protection trends. Poor dust removal and liquid-gas separation: Some devices lack effective filtration and sedimentation structures, easily leading to incomplete separation of water and dust, resulting in turbid water that affects subsequent recycling and can clog nozzles and drainage pipes. Inconvenient cleaning and maintenance: Traditional devices have enclosed internal structures and limited space, causing exhaust gases to adhere to the inner walls during spraying, forming scale and dust accumulation. Cleaning is complex and inefficient, affecting equipment operating efficiency and lifespan. Low automation and low operating efficiency: Some devices lack internal scraping devices or automatic cleaning mechanisms, leading to long-term accumulation of dust and impurities, increasing the frequency of manual intervention and maintenance workload.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an energy-saving and environmentally friendly chemical waste gas scrubbing device, comprising: a scrubbing tank, a sprayer installed on the top of the scrubbing tank, the sprayer being located at the top of the inner wall of the scrubbing tank, a sedimentation tank installed at the bottom of the scrubbing tank, a filter screen I being provided at the center of the inner wall of the sedimentation tank, a settling layer being provided at the top of the filter screen I, and a wastewater layer being provided at the bottom of the filter screen I, a water pump installed on the top of the sprayer, an input pipe being installed at the input end of the water pump, an output pipe being installed on the top of the water pump, a water storage tank installed on one side of the scrubbing tank, the water storage tank being located above the scrubbing tank, a water inlet box being provided on the top of the water inlet box, a water outlet hopper being provided on the top of the water outlet hopper, a filter screen II being provided on the top of the water outlet hopper, and an output pipe being located on the top of the filter screen II. A water inlet pipe II is fixedly embedded on the side of the water inlet box near its bottom, and the bottom end of the water inlet pipe II is fixedly embedded inside the water storage tank.

[0006] The technical effect of the above-mentioned further solution is as follows: Chemical waste gas enters the interior of the spray tank through the inlet pipe. After entering the interior, water from the storage tank enters the interior of the sprayer through the inlet pipe. The sprayer evenly sprays water into the interior of the spray tank. At this time, dust and harmful substances in the waste gas flow into the sedimentation tank along with the water droplets into the bottom layer. After the gas rises, it enters the next step or outdoors through the outlet pipe. At this time, dust and harmful substances remain on the upper surface of the filter screen. After being filtered by the filter screen, water enters the wastewater layer. The first filter screen performs the initial filtration. Simultaneously, an external power source activates a water pump, which draws water from the bottom wastewater layer of the sedimentation tank through the input pipe. After being drawn out, the water is transported through the output pipe to the top of the second filter screen for secondary filtration, further reducing dust and harmful substances in the water. The water drips through the second filter screen into the interior of the outlet hopper, and then enters the interior of the inlet box through the outlet hopper. At this point, it flows into the interior of the storage tank through the second inlet pipe on the surface of the inlet box for circulation. This further reduces water waste and lowers water costs during spraying.

[0007] In a preferred embodiment, an air outlet pipe is fixedly installed on one side of the spray tank, and an air inlet pipe is fixedly installed on the side of the spray tank away from the air outlet pipe. An air outlet hole is opened inside the spray tank, and the air outlet pipe is fixedly embedded inside the air outlet hole. A threaded rod is movably embedded in the bottom of the air outlet pipe through a fixing block. One end of the threaded rod is connected to a U-shaped block through a bearing. Two connecting rods are fixedly installed on the outer surface of the U-shaped block. Two grooves are opened on the inner wall of the spray tank near the air outlet hole, and both connecting rods are movably embedded inside the two grooves.

[0008] The technical effect of adopting the above-mentioned further solution is that the threaded rod can be rotated to move back and forth inside the fixed block at the bottom of the air outlet pipe. While moving, the U-shaped block is driven to move. At this time, the connecting rod and the stop block are driven to move. The stop block can move into the inside of the groove. When the scraper is scraping, it will not block the scraper from rotating on the inner wall of the spray tank. After the motor is turned off, during the process of the long rod slowly rotating until it stops, the movement of the stop block can block the rotation of the scraper and prevent the scraper from blocking the air outlet.

[0009] In a preferred embodiment, a stop block is fixedly connected to one end of each of the two connecting rods, a long rod is connected to the bottom of the sprayer via a bearing, a belt is movably sleeved on the bottom end of the long rod via a pulley, a scraper is fixedly sleeved on the surface of the long rod, the scraper slides on the inner wall of the spray tank, and a rotating rod is movably sleeved on one end of the belt via a pulley.

[0010] The technical effect of adopting the above-mentioned further solution is as follows: the motor drives the rotating rod to rotate, and at this time the rotating rod drives the belt to move through the pulley. The other end of the belt drives the long rod to rotate through the pulley. The long rod drives the scraper to slide on the inner wall of the spray tank. While sliding, it can clean and scrape off the impurities on its surface. The scraped impurities fall onto the surface of the filter screen.

[0011] In a preferred embodiment, a motor is fixedly installed on the side of the spray tank near the rotating rod, the rotating rod is fixedly connected to the output end of the motor, a flared pipe is fixedly installed on the side of the spray tank near the motor, a through hole is opened on the side of the spray tank near the motor, and the belt passes through the inside of the through hole.

[0012] The technical effect of adopting the above-mentioned further solution is that the belt passes through the inside of the through hole for the rotation of the through hole.

[0013] In a preferred embodiment, a blower is fixedly installed on the side of the horn-shaped pipe away from the spray tank. The blower is located on the side parallel to the through hole. A one-way valve is installed inside the air outlet pipe. A water inlet pipe is fixedly connected to the bottom of the water storage tank.

[0014] The technical effect of adopting the above-mentioned further solution is as follows: when the fan is started, air can be blown into the through holes on the surface of the spray tank. At this time, the gas inside the spray tank and the sprayed water will not leak out from the through holes. At the same time, the gas enters the interior of the spray tank through the trumpet-shaped pipe, and then cooperates with the scraper to make the high-speed airflow entering the spray tank and the rotation of the scraper form a vortex cyclone in the tank, which improves the contact between the sprayed water and the exhaust gas dust and enhances the purification effect.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. In this embodiment of the invention, chemical waste gas enters the interior of the spray tank through the inlet pipe. After entering, water from the storage tank enters the interior of the sprayer through the inlet pipe. The sprayer evenly sprays water into the interior of the spray tank. At this time, dust and harmful substances in the waste gas flow into the sedimentation tank along with the water droplets into the sedimentation layer. After the gas rises, it enters the next step or outdoors through the outlet pipe. At this time, dust and harmful substances remain on the upper surface of the filter screen. After being filtered by the filter screen, water enters the wastewater layer. The system performs the first filtration, and simultaneously starts a water pump via an external power source. The pump draws water from the wastewater layer at the bottom of the sedimentation tank through the input pipe, and then transports it through the output pipe to the top of the second filter screen for secondary filtration, further reducing dust and harmful substances in the water. The water drips through the second filter screen into the inside of the outlet hopper, and then enters the inside of the inlet box through the outlet hopper. At this point, it flows into the inside of the storage tank through the second inlet pipe on the surface of the inlet box for circulation. During spraying, this further reduces water waste and lowers water costs.

[0017] 2. In this embodiment of the invention, the bottom layer is in a closed state, and the side plate can also be disassembled by rotating screws. After disassembly, the impurities and dust on the upper surface of the filter screen can be cleaned out. After the spraying inside the spray tank is completed, the dust and harmful substances will adhere to the inner wall surface of the spray tank. The motor is started by an external power source, and the motor drives the rotating rod to rotate. At this time, the rotating rod drives the belt to move through the pulley. The other end of the belt drives the long rod to rotate through the pulley. The long rod drives the scraper to slide on the inner wall of the spray tank. While sliding, the impurities on its surface can be cleaned and scraped off. The scraped impurities fall onto the surface of the filter screen.

[0018] 3. In this embodiment of the invention, the threaded rod moves back and forth inside the fixed block at the bottom of the air outlet pipe by rotating. Simultaneously, the U-shaped block moves, which in turn moves the connecting rod and the stop block. The stop block can move into the groove, preventing the scraper from obstructing its rotation on the inner wall of the spray tank during scraping. After the motor is turned off, the long rod rotates slowly until it stops. During this process, the stop block moves, preventing the scraper from blocking the air outlet. Simultaneously, the fan is activated, blowing air through the through-holes on the surface of the spray tank. At this time, the gas inside the spray tank and the sprayed water will not leak out through the through-holes. Meanwhile, the gas enters the interior of the spray tank through the trumpet-shaped pipe and then cooperates with the scraper, causing the high-speed airflow entering the spray tank to combine with the rotation of the scraper to form a vortex cyclone within the tank, improving the contact between the sprayed water and the exhaust gas dust, and enhancing the purification effect. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0020] Figure 2 A top view schematic diagram of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of the spray tank of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0022] Figure 4 An enlarged structural diagram of point A of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0023] Figure 5 A schematic diagram of the internal structure of a trumpet-shaped pipe in an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0024] Figure 6 An enlarged structural diagram of the U-shaped block of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention;

[0025] Figure 7 A schematic diagram of the sedimentation tank structure of an energy-saving and environmentally friendly chemical waste gas scrubbing device provided by the present invention;

[0026] Figure 8 This is a side view of the spray tank structure of an energy-saving and environmentally friendly chemical waste gas spraying device provided by the present invention.

[0027] Legend:

[0028] 101. Spray tank; 102. Air inlet pipe; 103. Air outlet pipe; 104. One-way valve; 105. Water storage tank; 106. Water inlet pipe one; 107. Sprayer; 108. Motor; 109. Rotating rod; 110. Belt; 111. Through hole; 112. Fan; 113. Trumpet-shaped pipe; 114. Long rod; 115. Scraper; 116. Air outlet; 117. Stop block; 118. Connecting rod; 119. Groove; 120. U-shaped block; 121. Threaded rod; 122. Sedimentation tank; 123. Filter screen one; 124. Settling layer; 125. Wastewater layer; 126. Input pipe; 127. Output pipe; 128. Water pump; 129. Filter screen two; 130. Water outlet hopper; 131. Water inlet box; 132. Water inlet pipe two. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 8 This embodiment provides a technical solution: an energy-saving and environmentally friendly chemical waste gas scrubbing device, comprising: a scrubbing tank 101, a sprayer 107 installed on the top of the scrubbing tank 101, the sprayer 107 being located at the top of the inner wall of the scrubbing tank 101, a sedimentation tank 122 installed at the bottom of the scrubbing tank 101, a filter screen 123 disposed at the center of the inner wall of the sedimentation tank 122, a settling layer 124 disposed on top of the filter screen 123, a wastewater layer 125 disposed at the bottom of the filter screen 123, a water pump 128 installed on top of the sprayer 107, and an input end of the water pump 128 being equipped with... An output pipe 127 is installed on the top of the water pump 128 and the input pipe 126. A water storage tank 105 is installed on one side of the sprayer 107. The water storage tank 105 is located above the sprayer 107. A water inlet box 131 is provided on the top of the water storage tank 105. A water outlet hopper 130 is provided on the top of the water inlet box 131. A filter screen 129 is provided on the top of the water outlet hopper 130. The output pipe 127 is located on the top of the filter screen 129. A water inlet pipe 132 is fixedly embedded on the side of the water inlet box 131 near its bottom. The bottom end of the water inlet pipe 132 is fixedly embedded inside the water storage tank 105.

[0031] In use, chemical waste gas enters the spray tank 101 through the inlet pipe 102. After entering, water from the storage tank 105 enters the sprayer 107 through the inlet pipe 106. The sprayer 107 evenly sprays water into the spray tank 101. At this time, dust and harmful substances in the waste gas flow into the sedimentation tank 122's sedimentation layer 124 along with the water droplets. After the gas rises, it enters the next step or outdoors through the outlet pipe 103. At this time, dust and harmful substances remain on the upper surface of the filter screen 123. After being filtered by the filter screen 123, water enters the wastewater layer 125. The first filtration is performed, and at the same time, the water pump 128 is started by an external power source. The water pump 128 draws water from the wastewater layer 125 at the bottom of the sedimentation tank 122 through the input pipe 126. After being drawn out, the water is transported to the top of the filter screen 129 through the output pipe 127 for secondary filtration, which further reduces dust and harmful substances in the water. The water drips through the filter screen 129 into the interior of the outlet hopper 130, and then enters the interior of the inlet box 131 through the outlet hopper 130. At this time, it flows into the interior of the storage tank 105 through the inlet pipe 132 on the surface of the inlet box 131 for circulation. During the spraying, water waste is further reduced and water costs are reduced.

[0032] like Figures 1 to 8As shown, in one embodiment, an air outlet pipe 103 is fixedly installed on one side of the spray tank 101, and an air inlet pipe 102 is fixedly installed on the side of the spray tank 101 away from the air outlet pipe 103. An air outlet hole 116 is opened inside the spray tank 101, and the air outlet pipe 103 is fixedly embedded inside the air outlet hole 116. A threaded rod 121 is movably embedded at the bottom of the air outlet pipe 103 via a fixing block. One end of the threaded rod 121 is connected to a U-shaped block 120 via a bearing. Two connecting rods 118 are fixedly installed on the outer surface of the U-shaped block 120. Two grooves 119 are opened on the inner wall of the spray tank 101 near the air outlet hole 116. The connecting rods 118 are movably embedded inside the two grooves 119. They can move back and forth inside the fixed block at the bottom of the air outlet pipe 103 by rotating the threaded rod 121. While moving, the U-shaped block 120 moves, which in turn moves the connecting rods 118 and the stop block 117. The stop block 117 can move into the groove 119. When the scraper 115 is scraping, it will not block the scraper 115 from rotating on the inner wall of the spray tank 101. After the motor 108 is turned off, during the process of the long rod 114 slowly rotating until it stops, the stop block 117 moves to block the scraper 115 from rotating, preventing the scraper 115 from blocking the air outlet 116.

[0033] like Figures 1 to 8 As shown, in one embodiment, a stop block 117 is fixedly connected to one end of each of the two connecting rods 118. A long rod 114 is connected to the bottom of the sprayer 107 via a bearing. A belt 110 is movably sleeved on the bottom end of the long rod 114 via a pulley. A scraper 115 is fixedly sleeved on the surface of the long rod 114. The scraper 115 slides on the inner wall of the spray tank 101. A rotating rod 109 is movably sleeved on one end of the belt 110 via a pulley. The motor 108 drives the rotating rod 109 to rotate. At this time, the rotating rod 109 drives the belt 110 to move via the pulley. The other end of the belt 110 drives the long rod 114 to rotate via the pulley. The long rod 114 then drives the scraper 115 to slide on the inner wall of the spray tank 101. While sliding, it can clean and scrape off the impurities on its surface. The scraped impurities fall onto the surface of the filter screen 123.

[0034] like Figures 1 to 8 As shown, in one embodiment, a motor 108 is fixedly installed on the side of the spray tank 101 near the rotating rod 109. The rotating rod 109 is fixedly connected to the output end of the motor 108. A horn-shaped pipe 113 is fixedly installed on the side of the spray tank 101 near the motor 108. A through hole 111 is opened on the side of the spray tank 101 near the motor 108. A belt 110 passes through the inside of the through hole 111 and is used for the rotation of the through hole 111.

[0035] like Figures 1 to 8As shown, in one embodiment, a blower 112 is fixedly installed on the side of the horn-shaped pipe 113 away from the spray tank 101. The blower 112 is located on the side parallel to the through hole 111. A one-way valve 104 is installed inside the air outlet pipe 103. A water inlet pipe 106 is fixedly connected to the bottom of the water storage tank 105. When the blower 112 is started, air can be blown into the through hole 111 on the surface of the spray tank 101. At this time, the gas inside the spray tank 101 and the sprayed water will not leak out from the through hole 111. At the same time, the gas enters the interior of the spray tank 101 through the horn-shaped pipe 113 and then cooperates with the scraper 115. This causes the high-speed airflow entering the spray tank 101 and the rotation of the scraper 115 to form a vortex cyclone in the tank, which improves the contact between the sprayed water and the exhaust gas dust and enhances the purification effect.

[0036] Working Principle: During operation, chemical waste gas enters the spray tank 101 through the inlet pipe 102. After entering, water from the storage tank 105 flows through the inlet pipe 106 into the sprayer 107. The sprayer 107 evenly sprays water into the spray tank 101, allowing dust and harmful substances in the waste gas to flow along with the water droplets into the sedimentation tank 122's sedimentation layer 124. The rising gas then exits through the outlet pipe 103 to the next stage or outdoors. At this point, dust and harmful substances remain on the upper surface of the filter screen 123. After filtration by the filter screen 123, water enters the wastewater layer 125, where the first stage of filtration is performed. Simultaneously, an external power supply is used... The water pump 128 is started, and the water pump 128 draws water from the wastewater layer 125 at the bottom of the sedimentation tank 122 through the input pipe 126. After being drawn out, the water is transported through the output pipe 127 to the top of the filter screen 129 for secondary filtration, further reducing dust and harmful substances in the water. The water drips through the filter screen 129 into the water outlet 130, and then enters the water inlet box 131 through the water outlet 130. At this time, it flows into the water storage tank 105 through the water inlet pipe 132 on the surface of the water inlet box 131 for circulation. During spraying, water waste is further reduced, and water costs are reduced. At the same time, the sedimentation layer 124 is in a closed state, and the side plate can also be disassembled by turning the screws. After disassembly, the water can be... After the impurities and dust on the surface of filter screen 123 are cleaned out and sprayed inside spray tank 101, the dust and harmful substances will adhere to the inner wall surface of spray tank 101. Motor 108 is started by an external power source, driving rotating rod 109 to rotate. At this time, rotating rod 109 drives belt 110 through a pulley. The other end of belt 110 drives long rod 114 to rotate through a pulley. Long rod 114 then drives scraper 115 to slide on the inner wall of spray tank 101. While sliding, it cleans and scrapes away impurities from the surface. The scraped impurities fall onto the surface of filter screen 123, which can be moved back and forth inside the fixed block at the bottom of air outlet pipe 103 by rotating threaded rod 121. This movement simultaneously drives the U-shaped block. Move 120, which moves the connecting rod 118 and the stop block 117. The stop block 117 can move into the groove 119, so that it will not block the scraper 115 from rotating on the inner wall of the spray tank 101 when it is scraping. After the motor 108 is turned off, the long rod 114 rotates slowly until it stops. During this process, the stop block 117 moves to block the scraper 115 from rotating, preventing the scraper 115 from blocking the air outlet 116. At the same time, the blower 112 is started, which blows air into the through hole 111 on the surface of the spray tank 101. At this time, the gas inside the spray tank 101 and the sprayed water will not leak out from the through hole 111. Meanwhile, the gas enters the interior of the spray tank 101 through the horn-shaped pipe 113, and then cooperates with the rotation of the scraper 115.This allows the high-speed airflow entering the spray tank 101 to interact with the rotating scraper 115, creating a vortex cyclone within the tank. This improves the contact between the spray water and the exhaust dust, enhancing the purification effect.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An energy-saving and environmentally friendly chemical waste gas spraying device, comprising: A spray tank (101) is characterized in that a sprayer (107) is installed on the top of the spray tank (101), the sprayer (107) is located on the top of the inner wall of the spray tank (101), a sedimentation tank (122) is installed at the bottom of the spray tank (101), a filter screen (123) is provided at the center of the inner wall of the sedimentation tank (122), a sedimentation layer (124) is provided on the top of the filter screen (123), a wastewater layer (125) is provided at the bottom of the filter screen (123), a water pump (128) is installed on the top of the sprayer (107), an input pipe (126) is installed at the input end of the water pump (128), and the water pump (128) An output pipe (127) is installed on the top of the sprayer (107). A water storage tank (105) is installed on one side of the sprayer (107). The water storage tank (105) is located above the sprayer (107). A water inlet box (131) is provided on the top of the water storage tank (105). A water outlet bucket (130) is provided on the top of the water inlet box (131). A filter screen (129) is provided on the top of the water outlet bucket (130). The output pipe (127) is located on the top of the filter screen (129). A water inlet pipe (132) is fixedly embedded on the side of the water inlet box (131) near its bottom. The bottom end of the water inlet pipe (132) is fixedly embedded inside the water storage tank (105). An air outlet pipe (103) is fixedly installed on one side of the spray tank (101), and an air inlet pipe (102) is fixedly installed on the side of the spray tank (101) away from the air outlet pipe (103). An air outlet hole (116) is opened inside the spray tank (101), and the air outlet pipe (103) is fixedly embedded inside the air outlet hole (116). The bottom of the air outlet pipe (103) is movably fitted with a threaded rod (121) through a fixing block. One end of the threaded rod (121) is connected to a U-shaped block (120) through a bearing. Two connecting rods (118) are fixedly installed on the outer surface of the U-shaped block (120). Two grooves (119) are opened on the inner wall of the spray tank (101) near the air outlet (116). Both connecting rods (118) are movably fitted inside the two grooves (119). One end of each of the two connecting rods (118) is fixedly connected to a stop block (117), the bottom of the sprayer (107) is connected to a long rod (114) through a bearing, the bottom end of the long rod (114) is movably fitted with a belt (110) through a pulley, and a scraper (115) is fixedly fitted on the surface of the long rod (114). By rotating the threaded rod (121), the fixed block at the bottom of the air outlet pipe (103) moves back and forth, and the U-shaped block (120) moves at the same time. At this time, the connecting rod (118) and the stop block (117) move. The stop block (117) can move into the inside of the groove (119). When the scraper (115) is scraping, it will not block the scraper (115) from rotating on the inner wall of the spray tank (101). After the motor (108) is turned off, the long rod (114) rotates slowly until it stops. During this process, the stop block (117) can block the scraper (115) from rotating, preventing the scraper (115) from blocking the air outlet (116) from venting.

2. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 1, characterized in that: The scraper (115) slides on the inner wall of the spray tank (101), and one end of the belt (110) is movably fitted with a rotating rod (109) via a pulley.

3. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 2, characterized in that: A motor (108) is fixedly installed on the side of the spray tank (101) near the rotating rod (109). The rotating rod (109) is fixedly connected to the output end of the motor (108). A horn-shaped pipe (113) is fixedly installed on the side of the spray tank (101) near the motor (108).

4. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 3, characterized in that: The spray tank (101) has a through hole (111) on the side near the motor (108), and the belt (110) passes through the inside of the through hole (111).

5. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 4, characterized in that: A fan (112) is fixedly installed on the side of the horn-shaped pipe (113) away from the spray tank (101).

6. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 5, characterized in that: The fan (112) is located on the side parallel to the through hole (111).

7. The energy-saving and environmentally friendly chemical waste gas spraying equipment according to claim 6, characterized in that: The air outlet pipe (103) is equipped with a one-way valve (104), and the bottom of the water storage tank (105) is fixedly connected to a water inlet pipe (106).

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