A chemical waste gas purification system

Abstract

The present application relates to a chemical waste gas purification system, and relates to the technical field of chemical waste gas purification. It includes a gas pipeline and a reaction tube, the gas pipeline is connected to the reaction tube, the inner side wall of the gas pipeline is rotatably connected with a rotating rod, the rotating rod is sleeved with a valve plate, the side wall of the reaction tube is fixedly provided with a spray head, and the spray head penetrates the side wall of the reaction tube, the spray head is connected with a liquid infusion tube, the liquid infusion tube is provided with an adjustment component for adjusting the amount of alkali solution delivered, and a linkage component for driving the adjustment component to adjust is provided between the rotating rod and the adjustment component; a tightening spring is fixedly connected between the valve plate and the inner side wall of the gas pipeline, and a support plate is fixedly provided on the inner side wall of the gas pipeline, and when chemical waste gas is not introduced into the gas pipeline, the valve plate is pressed against the top wall of the support plate. Compared with the related art, it is not easy to cause waste of excessive alkali solution.

Description

Technical Field

[0001] The present application relates to the field of chemical waste gas purification, and in particular to a chemical waste gas purification system. Background Art

[0002] The chemical waste gas purification system is a system used to purify chemical waste gas.

[0003] At present, a chemical waste gas purification system in the related art includes an air intake pipe and a liquid infusion pipe, the liquid infusion pipe is connected to the air intake pipe, and one end of the liquid infusion pipe located in the air intake pipe is connected to a spray head. In actual use, the acidic chemical waste gas generated by the chemical reaction is transported to the air intake pipe, and at the same time, the alkaline solution is introduced into the liquid infusion pipe and sprayed into the air intake pipe through the spray head, so as to achieve the effect of acid-base neutralization of the chemical waste gas.

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in this technology: as the chemical reaction proceeds, as the reactants gradually decrease, the acidity of the chemical waste gas will gradually decrease. If the spraying amount of the alkali solution is not changed at this time, it will easily cause a waste of the alkali solution, so it needs to be improved. Summary of the invention

[0005] In order to improve the problem of waste of alkali solution caused by gradual decrease in acidity of chemical waste gas without changing the spraying amount of alkali solution, the present application provides a chemical waste gas purification system.

[0006] The chemical waste gas purification system provided in this application adopts the following technical solution:

[0007] A chemical waste gas purification system comprises an air delivery pipe and a reaction pipe, wherein the air delivery pipe is connected to the reaction pipe, a rotating rod is rotatably connected to the inner side wall of the air delivery pipe, a valve plate is sleeved on the rotating rod, a spray head is fixedly arranged on the side wall of the reaction pipe, and the spray head penetrates the side wall of the reaction pipe, the spray head is connected to a liquid delivery pipe, an adjusting component for adjusting the delivery amount of alkali solution is arranged in the liquid delivery pipe, and a linkage component for driving the adjusting component to adjust is arranged between the rotating rod and the adjusting component;

[0008] A clamping spring is fixedly connected between the valve plate and the inner wall of the gas pipe, and a support plate is fixedly provided on the inner wall of the gas pipe. When no chemical waste gas is introduced into the gas pipe, the valve plate abuts against the top wall of the support plate.

[0009] By adopting the above technical scheme, when the chemical waste gas is transported from the air inlet pipe to the air delivery pipe, the valve plate is turned upward due to the air pressure of the chemical waste gas and the deformation of the clamping spring, thereby opening the air delivery pipe, and then allowing the chemical waste gas to flow into the reaction tube for purification. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the operation of the linkage assembly. Through the operation of the linkage assembly, the regulating assembly will maximize the amount of alkali solution sprayed into the reaction tube per unit time; when the tail chemical waste gas passes through the valve plate, the air pressure on the valve plate gradually decreases and slowly presses against the top wall of the support plate through the elastic force of the clamping spring. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the operation of the linkage assembly. Through the operation of the linkage assembly, the regulating assembly will reduce the amount of alkali solution sprayed into the reaction tube per unit time, thereby not easily causing excessive waste of alkali solution.

[0010] Optionally, the adjustment assembly includes a fixed block, an adjustment block, a fixed plate and a screw, the fixed block is fixed to the inner wall of the infusion tube, and an adjustment hole is opened through the top wall of the fixed block, the adjustment block is inserted into the adjustment hole, the screw is fixedly connected to the adjustment block, the fixed plate is fixedly connected to the inner wall of the infusion tube, the screw passes through the fixed plate and is threadedly connected to the fixed plate, and the screw is connected to the linkage assembly.

[0011] By adopting the above technical solution, when the tail chemical waste gas passes through the valve plate, the valve plate is no longer subjected to air pressure and is pressed against the top wall of the support plate by the elastic force of the pressing spring. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the operation of the linkage assembly. Through the operation of the linkage assembly, the screw will rotate upward and drive the adjusting block to be further inserted into the adjusting hole, thereby reducing the amount of alkali solution sprayed into the reaction tube per unit time, and thus it is not easy to cause excessive waste of alkali solution.

[0012] Optionally, the linkage assembly includes a connecting rod, a first gear, a second gear, a third gear and a fourth gear, the rotating rod passing through the inner wall of the gas pipe toward one end of the reaction tube and extending to the outside of the reaction tube and being coaxially fixed with the first gear, the connecting rod is rotatably connected to the outer wall of the gas pipe and passes through the liquid infusion tube at one end away from the gas pipe and extending into the liquid infusion tube, the second gear and the third gear are both coaxially fixed with the connecting rod, and the second gear is meshed with the first gear, the fourth gear is coaxially fixed with the screw rod, and the fourth gear is meshed with the third gear.

[0013] By adopting the above technical solution, when the tail chemical waste gas passes through the valve plate, the valve plate is no longer subjected to air pressure and is pressed against the top wall of the support plate by the elastic force of the clamping spring. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the rotation of the first gear, the second gear, the connecting rod, the third gear, the fourth gear and the screw in turn. At this time, the screw will rotate upward and drive the adjusting block to be further inserted into the adjusting hole, thereby reducing the amount of alkali solution sprayed into the reaction tube per unit time, and thus it is not easy to cause excessive waste of alkali solution.

[0014] Optionally, the diameter of the first gear is greater than the diameter of the second gear, and the diameter of the third gear is greater than the diameters of the second gear and the fourth gear.

[0015] By adopting the above technical solution, the screw can drive the regulating block to move upward a greater distance, so that the amount of alkali solution sprayed into the reaction tube per unit time can be more obviously regulated.

[0016] Optionally, the reaction tube is connected to a water inlet pipe, and one-way valves are fixedly provided on the reaction tube, the infusion tube and the water inlet pipe. A cleaning component for cleaning the inner wall of the reaction tube is provided in the reaction tube.

[0017] By adopting the above technical solution, when the water inlet pipe transports water into the reaction tube, the cleaning component will automatically clean the inner wall of the reaction tube, so that the residual impurities and alkali solution on the inner wall of the reaction tube are cleaned up, and the inner wall of the reaction tube is not easily corroded.

[0018] Optionally, the cleaning assembly includes a support rod, an impeller, a brush plate and bristles, the support rod is rotatably connected to the inner wall of the reaction tube, and the impeller is coaxially fixed to the support rod, the water outlet of the water inlet pipe faces one side of the impeller, the brush plate is fixedly connected to the support rod, the bristles are fixedly connected to the brush plate, and the bristles are in contact with the inner wall of the reaction tube.

[0019] By adopting the above technical solution, when the water inlet pipe passes water into the reaction tube, the water flow impacts one side of the impeller, thereby driving the impeller to rotate. The rotation of the impeller in turn drives the rotation of the support rod and the brush plate, and then the bristles clean the inner wall of the reaction tube, so that the residual impurities and alkali solution on the inner wall of the reaction tube are cleaned, so that the inner wall of the reaction tube is not easily corroded.

[0020] Optionally, the reaction tube is connected to an air outlet pipe, the air outlet pipe is connected to a water outlet pipe, a two-way valve is fixedly arranged between the water outlet pipe and the air outlet pipe, a filter is fixedly arranged in the water outlet pipe, the water outlet pipe is connected to a water storage tank, the water storage tank is connected to an inlet pipe for introducing an acidic solution, a water pump is fixedly arranged on the outer wall of the water storage tank and the water pump is connected to the inside of the water storage tank, the water pump is connected to a connecting pipe, the connecting pipe is connected to the water inlet pipe, and a water retaining cover is inserted at the water inlet of the water inlet pipe.

[0021] By adopting the above technical scheme, when in use, the air outlet pipe is first closed and the water outlet pipe is opened through the two-way valve, so that the first batch of water used to clean the reaction tube is transported to the water storage tank through the water outlet pipe, and then the acidic solution is transported to the water storage tank through the liquid inlet pipe and neutralized with the water in the water storage tank; when the reaction tube needs to be cleaned again, the water pump can be started to transport the water in the water storage tank from the connecting pipe to the water inlet pipe, and at this time, due to the provision of a water retaining cover, the water flowing into the water inlet pipe is not easy to flow out from the water inlet of the water inlet pipe, and then the water is transported to the reaction tube by the inlet water and the inner wall of the reaction tube is washed, thereby saving water resources.

[0022] Optionally, the gas delivery pipe is connected to an air intake pipe, and a filter component for preliminary purification of chemical waste gas is provided in the air intake pipe.

[0023] By adopting the above technical solution, when the chemical waste gas is transported from the air inlet pipe to the air delivery pipe, the filter component can preliminarily purify the chemical waste gas, thereby improving the purification effect of the chemical waste gas.

[0024] Optionally, the filter assembly includes a filter mesh and a containing mesh bag, the containing mesh bag is filled with activated carbon, the filter mesh and the containing mesh bag are both connected to the air inlet pipe, and the filter mesh is located on a side of the containing mesh bag away from the air supply pipe.

[0025] By adopting the above technical solution, when the chemical waste gas is transported from the air inlet pipe to the air transmission pipe, the filter cloth can filter out large particles of dust in the chemical waste gas, and then the activated carbon can adsorb the tiny particles of the chemical waste gas, thereby completing the preliminary purification of the chemical waste gas and further improving the purification effect of the chemical waste gas.

[0026] Optionally, a fixing frame is fixedly provided on the filter mesh cloth and the accommodating mesh bag, a plug hole is penetrated through the outer wall of the air inlet pipe, a plug plate is inserted into the plug hole, the fixing frame is fixedly connected to the plug plate, a sealing strip is fixedly provided on the side wall of the plug plate, a sealing groove is provided on the side wall of the plug hole, and the sealing strip is interference fitly inserted into the sealing groove.

[0027] By adopting the above technical solution, when the plug plate is fully inserted into the plug hole, the sealing strip is inserted into the sealing groove with interference fit, which not only enables the plug plate to maintain a locked state, but also improves the sealing of the intake pipe, making it difficult for chemical waste gas to leak from the plug hole; when the filter cloth and activated carbon need to be replaced, the plug plate is pulled out of the plug hole to replace the old filter cloth and activated carbon, and the operation is convenient.

[0028] In summary, the present application includes at least one of the following beneficial effects:

[0029] 1. When the chemical waste gas is transported from the air inlet pipe to the air delivery pipe, the valve plate is turned upward due to the air pressure of the chemical waste gas and the deformation of the clamping spring, thereby opening the air delivery pipe, and then allowing the chemical waste gas to flow into the reaction tube for purification. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the operation of the linkage assembly. Through the operation of the linkage assembly, the regulating assembly will maximize the amount of alkali liquid sprayed into the reaction tube per unit time; when the tail chemical waste gas passes through the valve plate, the air pressure on the valve plate gradually decreases and slowly presses against the top wall of the support plate through the elastic force of the clamping spring. During this process, the rotating rod rotates, and the rotation of the rotating rod drives the operation of the linkage assembly. Through the operation of the linkage assembly, the regulating assembly will reduce the amount of alkali liquid sprayed into the reaction tube per unit time, thereby not easily causing excessive waste of alkali liquid.

[0030] 2. When the chemical waste gas is transported from the air inlet pipe to the air delivery pipe, the filter cloth can filter out the large particles of dust in the chemical waste gas, and then the activated carbon can adsorb the tiny particles of the chemical waste gas, thereby completing the initial purification of the chemical waste gas and further improving the purification effect of the chemical waste gas.

[0031] 3. When the plug board is fully inserted into the socket, the sealing strip is inserted into the sealing groove with interference fit, which not only keeps the plug board in a locked state, but also improves the sealing of the intake pipe, making it difficult for chemical waste gas to leak from the socket; when the filter cloth and activated carbon need to be replaced, the plug board can be pulled out of the socket to replace the old filter cloth and activated carbon, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0033] Figure 2 This is a structural diagram for illustrating the connection relationship between the water pipe and the filter screen in the embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the structure of the adjustment component in the embodiment of the present application;

[0035] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0036] Figure 5 This is a schematic diagram of the structure of the filter assembly in the embodiment of the present application;

[0037] Figure 6 This is a structural schematic diagram for illustrating the connection relationship between the valve plate and the gas pipeline in the embodiment of the present application;

[0038] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0039] Figure 8 It is a structural diagram for reflecting the linkage components in the embodiment of the present application.

[0040] In the figure: 1, air inlet pipe; 11, plug hole; 111, sealing groove; 12, plug plate; 121, sealing strip; 13, filter assembly; 131, filter cloth; 1311, fixing frame; 132, accommodating mesh bag; 1321, activated carbon; 2, air delivery pipe; 21, support plate; 22, rotating rod; 221, valve plate; 23, tightening spring; 3, reaction tube; 31, one-way valve; 32, spray head; 4, adjustment assembly; 41, fixing block; 411, adjustment hole; 42, adjustment block; 43. Fixed plate; 44. Screw rod; 5. Linkage assembly; 51. Connecting rod; 52. First gear; 53. Second gear; 54. Third gear; 55. Fourth gear; 6. Cleaning assembly; 61. Support rod; 62. Impeller; 63. Brush plate; 64. Brush; 7. Air outlet pipe; 71. Two-way valve; 72. Water outlet pipe; 721. Filter screen; 73. Water storage tank; 74. Liquid inlet pipe; 75. Water pump; 76. Connecting pipe; 8. Water inlet pipe; 81. Water retaining cover; 9. Infusion tube. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The present application embodiment discloses a chemical waste gas purification system. Figure 1 A chemical waste gas purification system includes an air pipe 2 and a reaction tube 3, and the air pipe 2 is connected to the reaction tube 3. The end of the air pipe 2 away from the reaction tube 3 is connected to an air inlet pipe 1, and the air inlet pipe 1 is used to connect to the source of chemical waste gas; the end of the reaction tube 3 away from the air pipe 2 is connected to an air outlet pipe 7. The bottom of the reaction tube 3 is connected to a liquid delivery pipe 9. When in use, the acidic chemical waste gas is transported from the air inlet pipe 1 to the air pipe 2, and then transported to the reaction tube 3 by the delivery pipe. At this time, the alkali solution is transported to the reaction tube 3 through the liquid delivery pipe 9 to neutralize the chemical waste gas, thereby achieving the effect of purifying the chemical waste gas.

[0043] Reference Figure 1In addition, a water inlet pipe 8 is provided at the bottom of the reaction tube 3 at one end of the liquid infusion pipe 9 away from the gas infusion pipe 2. When the first batch of chemical waste gas is purified, the water inlet pipe 8 can be connected to a water source and water can be introduced and transported to the reaction tube 3, so as to wash the residual alkali solution on the inner wall of the reaction tube 3, thereby preventing the inner wall of the reaction tube 3 from being corroded. A one-way valve 31 is provided on the reaction tube 3, the liquid infusion pipe 9 and the water inlet pipe 8. The one-way valve 31 prevents the reaction tube 3, the liquid infusion pipe 9 and the water inlet pipe 8 from backflowing when chemical waste gas or water is introduced.

[0044] Reference Figure 1 The end of the gas outlet pipe 7 away from the reaction tube 3 is connected to a water outlet pipe 72, and a two-way valve 71 is fixedly arranged between the water outlet pipe 72 and the gas outlet pipe 7. The end of the water outlet pipe 72 away from the reaction tube 3 is connected to a water storage tank 73, which is used to collect water used to clean the inner wall of the reaction tube 3. The bottom of the water storage tank 73 is connected to a liquid inlet pipe 74, which is used to introduce an acidic solution into the water storage tank 73 to neutralize the water in the water storage tank 73.

[0045] Reference Figure 1 A water pump 75 is fixedly arranged on the side wall of the water tank 73 away from the water outlet pipe 72, and the water pump 75 is connected to the inside of the water tank 73. A connecting pipe 76 is arranged in communication with the water pump 75, and the connecting pipe 76 is connected to the water inlet pipe 8. A water retaining cover 81 is inserted at the water inlet of the water inlet pipe 8. When in use, the air outlet pipe 7 is first closed by the two-way valve 71 and the water outlet pipe 72 is opened, so that the water in the first batch of reaction tubes 3 after cleaning is transported to the water tank 73 through the water outlet pipe 72, and then The liquid inlet pipe 74 transports the acidic solution to the water tank 73 and neutralizes it with the water in the water tank 73. When the reaction tube 3 needs to be cleaned again, the water pump 75 can be started to transport the water in the water tank 73 from the connecting pipe 76 to the water inlet pipe 8. At this time, since a water retaining cover 81 is provided, the water flowing into the water inlet pipe 8 is not easy to flow out from the water inlet of the water inlet pipe 8. The water is then transported to the reaction tube 3 by the inlet water and the inner wall of the reaction tube 3 is washed, thereby saving water resources.

[0046] Reference Figure 1 and Figure 2 In addition, a filter screen 721 is fixedly provided in the water outlet pipe 72 , and the filter screen 721 can filter out impurities in the water used to clean the inner wall of the reaction tube 3 and collect the impurities in the water into the water storage tank 73 .

[0047] Reference Figure 3 and Figure 4A cleaning component 6 for cleaning the inner wall of the reaction tube 3 is provided in the reaction tube 3. When the water inlet pipe 8 transports water into the reaction tube 3, the cleaning component 6 will automatically clean the inner wall of the reaction tube 3, so that the residual impurities and alkali solution on the inner wall of the reaction tube 3 are cleaned, and the inner wall of the reaction tube 3 is not easily corroded.

[0048] Reference Figure 4 The cleaning assembly 6 includes a support rod 61, an impeller 62, a brush plate 63 and bristles 64. The support rod 61 is rotatably connected to the inner wall of the reaction tube 3 through a plate body, and the impeller 62 is coaxially fixed to the support rod 61. The water outlet of the water inlet pipe 8 located at the reaction tube 3 is aligned with one side of the impeller 62. The brush plate 63 is welded and fixed to one end of the support rod 61 away from the impeller 62 through the plate body. The side wall of the brush plate 63 on the side away from the support rod 61 is bonded and fixed to the bristles 64, and the bristles 64 are in contact with the inner wall of the reaction tube 3. When the water inlet pipe 8 passes water into the reaction tube 3, the water flow impacts the side of the impeller 62, thereby driving the impeller 62 to rotate. The rotation of the impeller 62 drives the rotation of the support rod 61 and the brush plate 63 in turn, and then the bristles 64 cleans the inner wall of the reaction tube 3, so that the residual impurities and alkali solution on the inner wall of the reaction tube 3 are cleaned, so that the inner wall of the reaction tube 3 is not easily corroded.

[0049] Reference Figure 1 and Figure 5 The air intake pipe 1 is provided with a filter component 13. When in use, the air intake pipe 1 is connected to the chemical waste gas source. When the chemical waste gas is transported from the air intake pipe 1 to the air delivery pipe 2, the filter component 13 can preliminarily purify the chemical waste gas, thereby improving the purification effect of the chemical waste gas.

[0050] Reference Figure 5 The filter assembly 13 includes a filter mesh 131 and a receiving mesh bag 132, the receiving mesh bag 132 is filled with activated carbon 1321, the filter mesh 131 and the receiving mesh bag 132 are both connected to the air intake pipe 1, and the filter mesh 131 is located on the side of the receiving mesh bag 132 away from the air supply pipe 2. When the chemical waste gas is transported from the air intake pipe 1 to the air supply pipe 2, the filter mesh 131 can filter out large particles of dust in the chemical waste gas, and then the activated carbon 1321 can adsorb tiny particles of the chemical waste gas, thereby completing the preliminary purification of the chemical waste gas, and then improving the purification effect of the chemical waste gas.

[0051] Reference Figure 5In addition, the filter mesh 131 and the containing mesh bag 132 are both bonded with a fixing frame 1311, which is made of rubber. The outer wall of the air intake pipe 1 is penetrated with a plug hole 11, and a plug plate 12 is inserted in the plug hole 11. The side wall of the plug hole 11 along the circumferential direction is provided with a sealing groove 111, and the side wall of the plug plate 12 along the circumferential direction is bonded with a sealing strip 121, which is made of rubber. When the plug plate 12 is fully inserted into the plug hole 11, the sealing strip 121 is inserted into the sealing groove 111 with interference fit, which not only enables the plug plate 12 to maintain a locked state, but also improves the sealing of the air intake pipe 1, so that the chemical waste gas is not easy to leak from the plug hole 11; when the filter mesh 131 and the activated carbon 1321 need to be replaced, the plug plate 12 is pulled out from the plug hole 11, and the old filter mesh 131 and the activated carbon 1321 can be replaced, and the operation is convenient.

[0052] Reference Figure 6 and Figure 7 The inner wall of the gas pipe 2 is rotatably connected with a rotating rod 22, and the rotating rod 22 is located on one side of the gas pipe 2. A valve plate 221 is sleeved on the rotating rod 22. The valve plate 221 is a circular plate, and the diameter of the valve plate 221 is adapted to the inner diameter of the gas pipe 2. A tightening spring 23 is welded between the top wall of the valve plate 221 and the inner wall of the gas pipe 2. A support plate 21 is welded to the inner wall of the gas pipe 2. When no chemical waste gas is transported in the gas pipe 2, the valve plate 221 will automatically press against the top wall of the support plate 21 through the elastic force of the tightening spring 23, so that the valve plate 221 is not easy to rotate downward.

[0053] Reference Figure 4 and Figure 8A spray head 32 is welded at the bottom of the reaction tube 3, and the spray head 32 penetrates the outer wall of the reaction tube 3, and the nozzle of the spray head 32 faces the inside of the reaction tube 3. The infusion tube 9 is connected with the spray head 32, and the infusion tube 9 is provided with an adjusting component 4 for adjusting the amount of alkali solution delivered, and a linkage component 5 for driving the adjusting component 4 for adjustment is provided between the rotating rod 22 and the adjusting component 4. When the chemical waste gas is transported from the air inlet pipe 1 to the air delivery pipe 2, the valve plate 221 is subjected to the air pressure of the chemical waste gas and is turned upward by the deformation of the spring 23, thereby opening the air delivery pipe 2, and then the chemical waste gas flows into the reaction tube 3 for purification. In this process, the rotating rod 221 rotates The rod 22 rotates, and the rotation of the rotating rod 22 drives the operation of the linkage component 5. Through the operation of the linkage component 5, the regulating component 4 will maximize the amount of alkali solution sprayed into the reaction tube 3 per unit time; when the tail chemical waste gas passes through the valve plate 221, the air pressure on the valve plate 221 gradually decreases and slowly presses against the top wall of the support plate 21 through the elastic force of the pressing spring 23. During this process, the rotating rod 22 rotates, and the rotation of the rotating rod 22 drives the operation of the linkage component 5. Through the operation of the linkage component 5, the regulating component 4 will reduce the amount of alkali solution sprayed into the reaction tube 3 per unit time, thereby not easily causing excessive waste of alkali solution.

[0054] Reference Figure 4 The adjusting assembly 4 includes a fixing block 41, an adjusting block 42, a fixing plate 43 and a screw 44. The fixing block 41 is cylindrical and its diameter is consistent with the inner diameter of the infusion tube 9. The fixing block 41 is welded to the end of the infusion tube 9 close to the spray head 32, and the bottom wall of the fixing block 41 is penetrated by an adjusting hole 411. The cross-section of the adjusting hole 411 and the adjusting block 42 is trapezoidal. The fixing plate 43 is welded to the inner wall of the infusion tube 9 and is located below the fixing block 41. The screw 44 penetrates the fixing plate 43 and is threadedly connected to the fixing plate 43. The end of the screw 44 close to the fixing block 41 is welded and fixed to the adjusting block 42. The adjusting block 42 is inserted In the adjusting hole 411, one end of the screw 44 away from the fixed block 41 is connected to the linkage assembly 5. When the tail chemical waste gas passes through the valve plate 221, the valve plate 221 is no longer subjected to air pressure and is pressed against the top wall of the support plate 21 by the elastic force of the clamping spring 23. During this process, the rotating rod 22 rotates, and the rotation of the rotating rod 22 drives the operation of the linkage assembly 5. Through the operation of the linkage assembly 5, the screw 44 will rotate upward and drive the adjusting block 42 to further insert into the adjusting hole 411, thereby reducing the amount of alkali solution sprayed into the reaction tube 3 per unit time, and thus it is not easy to cause excessive waste of alkali solution.

[0055] Reference Figure 8The linkage assembly 5 includes a connecting rod 51, a first gear 52, a second gear 53, a third gear 54 and a fourth gear 55. The end of the rotating rod 22 facing the liquid infusion tube 9 passes through the inner wall of the gas tube 2 and extends to the outside of the gas tube 2, and is coaxially fixed with the first gear 52. The side wall of the gas tube 2 facing the liquid infusion tube 9 is rotatably connected to the connecting rod 51, and the connecting rod 51 and the rotating rod 22 are located in the same plane. The end of the connecting rod 51 close to the gas tube 2 is coaxially fixed with the second gear 53, the first gear 52 is meshed with the second gear 53, and the diameter of the first gear 52 is larger than that of the second gear 53. When the first gear 52 rotates half a circle, the second gear 53 rotates two circles. One end of the connecting rod 51 away from the air pipe 2 passes through the infusion pipe 9 and extends into the infusion pipe 9. The end of the connecting rod 51 located in the infusion pipe 9 is coaxially fixed to the third gear 54. The fourth gear 55 is coaxially fixed to the screw rod 44. The third gear 54 is meshed with the fourth gear 55. The diameter of the third gear 54 is greater than the diameter of the fourth gear 55. When the third gear 54 rotates two circles, the fourth gear 55 rotates four circles. When the tail chemical waste gas passes through the valve plate 221, since the valve plate 221 is no longer subjected to air pressure and is pressed against the top wall of the support plate 21 by the elastic force of the clamping spring 23, the rotating rod 22 rotates during this process, and the rotation of the rotating rod 22 drives the first gear 52, the second gear 53, the connecting rod 51, the third gear 54, the fourth gear 55 and the screw 44 to rotate in turn. At this time, the screw 44 will rotate upward and drive the adjusting block 42 to be further inserted into the adjusting hole 411, thereby reducing the amount of alkali solution sprayed into the reaction tube 3 per unit time, and thus it is not easy to cause excessive waste of alkali solution.

[0056] The implementation principle of a chemical waste gas purification system in an embodiment of the present application is as follows: when the tail chemical waste gas passes through the valve plate 221, the air pressure on the valve plate 221 gradually decreases and slowly presses against the top wall of the support plate 21 through the elastic force of the pressing spring 23. During this process, the rotating rod 22 rotates. The rotation of the rotating rod 22 drives the rotation of the first gear 52, the second gear 53, the connecting rod 51, the third gear 54, the fourth gear 55 and the screw 44 in turn. At this time, the screw 44 will rotate upward and drive the adjusting block 42 to further insert into the adjusting hole 411, thereby reducing the amount of alkali solution sprayed into the reaction tube 3 per unit time, and thus it is not easy to cause excessive waste of alkali solution.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A chemical waste gas purification system, comprising a gas delivery pipe (2) and a reaction tube (3), wherein the gas delivery pipe (2) is connected to the reaction tube (3), Features: The inner side wall of the gas delivery pipe (2) is rotatably connected to a rotating rod (22), a valve plate (221) is sleeved on the rotating rod (22), a spray head (32) is fixedly provided on the side wall of the reaction tube (3), and the spray head (32) penetrates the side wall of the reaction tube (3), the spray head (32) is connected to a liquid delivery pipe (9), a regulating component (4) for regulating the amount of alkali solution delivered is provided in the liquid delivery pipe (9), and a linkage component (5) for driving the regulating component (4) to perform regulation is provided between the rotating rod (22) and the regulating component (4); A pressing spring (23) is fixedly connected between the valve plate (221) and the inner wall of the gas pipe (2); a support plate (21) is fixedly arranged on the inner wall of the gas pipe (2); when no chemical waste gas flows into the gas pipe (2), the valve plate (221) abuts against the top wall of the support plate (21); The adjustment component (4) comprises a fixed block (41), an adjustment block (42), a fixed plate (43) and a screw (44); the fixed block (41) is fixed to the inner wall of the infusion tube (9); an adjustment hole (411) is formed through the top wall of the fixed block (41); the adjustment block (42) is inserted into the adjustment hole (411); the screw (44) is fixedly connected to the adjustment block (42); the fixed plate (43) is fixedly connected to the inner wall of the infusion tube (9); the screw (44) passes through the fixed plate (43) and is threadedly connected to the fixed plate (43); and the screw (44) is connected to the linkage component (5); The linkage assembly (5) comprises a connecting rod (51), a first gear (52), a second gear (53), a third gear (54) and a fourth gear (55); the end of the rotating rod (22) facing the reaction tube (3) passes through the inner wall of the gas pipe (2) and extends to the outside of the reaction tube (3) and is coaxially fixed with the first gear (52); the connecting rod (51) is rotatably connected to the outer wall of the gas pipe (2) and the end away from the gas pipe (2) passes through the liquid infusion pipe (9) and extends into the liquid infusion pipe (9); the second gear (53) and the third gear (54) are both coaxially fixed with the connecting rod (51), and the second gear (53) is meshed with the first gear (52); the fourth gear (55) is coaxially fixed with the screw rod (44), and the fourth gear (55) is meshed with the third gear (54).

2. A chemical waste gas purification system according to claim 1, Features: The diameter of the first gear (52) is greater than the diameter of the second gear (53), and the diameter of the third gear (54) is greater than the diameters of the second gear (53) and the fourth gear (55).

3. A chemical waste gas purification system according to claim 1, Features: The reaction tube (3) is connected to a water inlet pipe (8), and one-way valves (31) are fixedly arranged on the reaction tube (3), the liquid infusion pipe (9) and the water inlet pipe (8). A cleaning component (6) for cleaning the inner wall of the reaction tube (3) is arranged inside the reaction tube (3).

4. A chemical waste gas purification system according to claim 3, Features: The cleaning assembly (6) comprises a support rod (61), an impeller (62), a brush plate (63) and bristles (64); the support rod (61) is rotatably connected to the inner wall of the reaction tube (3); the impeller (62) and the support rod (61) are coaxially fixed; the water outlet of the water inlet pipe (8) faces one side of the impeller (62); the brush plate (63) is fixedly connected to the support rod (61); the bristles (64) are fixedly connected to the brush plate (63); and the bristles (64) are in contact with the inner wall of the reaction tube (3).

5. A chemical waste gas purification system according to claim 3, Features: The reaction tube (3) is connected to an air outlet pipe (7), and the air outlet pipe (7) is connected to a water outlet pipe (72). A two-way valve (71) is fixedly arranged between the water outlet pipe (72) and the air outlet pipe (7), and a filter screen (721) is fixedly arranged inside the water outlet pipe. The water outlet pipe (72) is connected to a water storage tank (73), and the water storage tank (73) is connected to a liquid inlet pipe (74) for introducing an acidic solution. A water pump (75) is fixedly arranged on the outer wall of the water storage tank (73) and the water pump (75) is connected to the inside of the water storage tank (73). The water pump (75) is connected to a connecting pipe (76), and the connecting pipe (76) is connected to the water inlet pipe (8). A water retaining cover (81) is inserted at the water inlet of the water inlet pipe (8).

6. A chemical waste gas purification system according to claim 1, Features: The air delivery pipe (2) is connected to an air intake pipe (1), and a filter assembly (13) for preliminary purification of chemical waste gas is arranged in the air intake pipe (1).

7. A chemical waste gas purification system according to claim 6, Features: The filter assembly (13) comprises a filter mesh (131) and a receiving mesh bag (132), wherein the receiving mesh bag (132) is filled with activated carbon (1321), the filter mesh (131) and the receiving mesh bag (132) are both connected to the air inlet pipe (1), and the filter mesh (131) is located on a side of the receiving mesh bag (132) away from the air supply pipe (2).

8. A chemical waste gas purification system according to claim 7, Features: A fixing frame (1311) is fixedly arranged on the filter mesh cloth (131) and the containing mesh bag (132); an insertion hole (11) is penetrated through the outer wall of the air inlet pipe (1); a plug plate (12) is inserted into the insertion hole (11); the fixing frame (1311) is fixedly connected to the plug plate (12); a sealing strip (121) is fixedly arranged on the side wall of the plug plate (12); a sealing groove (111) is opened on the side wall of the insertion hole (11); and the sealing strip (121) is inserted into the sealing groove (111) in an interference fit.

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