A harmless waste gas recycling and combustion device

Abstract

The present invention provides a harmless waste gas recycling combustion device, comprising: a cooling mechanism, which is used to reduce the temperature of the waste gas; a degassing mechanism, which is connected to the cooling mechanism through a first waste gas connecting pipe and is used to filter impurities in the waste gas; a combustion mechanism, which is connected to the degassing mechanism through a third waste gas connecting pipe and is used to fully burn the waste gas; the spray component of the cooling mechanism can reduce the waste gas temperature, dissolve impurities, and ensure the filtering effect of the activated carbon plate; the water retaining component can block oil droplets and water vapor and adjust the flow rate; the filtering and exhaust components of the degassing mechanism can ensure uninterrupted operation when replacing the activated carbon plate and prevent unfiltered waste gas from passing through; the exhaust component can also accelerate filtration, supply oxygen to promote combustion, and accurately regulate the gas flow through the quantity control component of the combustion mechanism, and the charging component preheats the waste gas, which saves energy and promotes full combustion.

Description

Technical Field

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

[0002] Waste gas usually contains a variety of harmful substances, such as volatile organic compounds, nitrogen oxides, sulfur oxides, etc. If these waste gases are directly discharged into the atmosphere without effective treatment, they will cause great harm to the environment and human health. At present, although there are some waste gas treatment technologies, such as adsorption, absorption, catalytic oxidation, etc., these methods have limited effects when treating waste gases with certain complex components. Recycled combustion, as an effective waste gas treatment method, uses high-temperature combustion to convert harmful substances in waste gas into harmless substances, such as carbon dioxide and water. It has the advantages of high treatment efficiency and wide application range, and can effectively reduce the pollution of waste gas to the environment.

[0003] Existing patent CN111578297B discloses a carbonization combustion exhaust gas treatment device, comprising: a secondary combustion box; an intake pipe, the intake pipe is inserted at the center of one end of the secondary combustion box, a baffle is fixedly installed at the center of the inside of the intake pipe by bolts, a limiting groove is opened at the center of the other side of the baffle through the air intake hole, a sealing plate is inserted inside the limiting groove, and a blocking block is evenly fixedly installed on one side of the intake pipe close to the baffle plate by bolts; the exhaust gas flows through the air intake hole, and then the flowing exhaust gas pushes the sealing plate open, so that the pressure sensor inside the limiting groove loses pressure, and then the pressure sensor cannot detect the pressure information, and then the control module turns on the natural gas burner, and then the natural gas burner performs secondary combustion on the exhaust gas, so that the natural gas burner will only work when there is exhaust gas flowing inside the intake pipe, saving resources.

[0004] However, in actual use, when the flow rate of the incoming exhaust gas is unstable or the filter plate is replaced, the amount of exhaust gas burned will change, while the amount of natural gas introduced is constant. When too much natural gas is introduced, it will cause a waste of resources, and when too little natural gas is introduced, it will cause incomplete combustion of the exhaust gas. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide a harmless waste gas recycling combustion device, which can achieve the function of fully burning the waste gas through a cooling mechanism and a degassing mechanism in conjunction with a combustion mechanism, thereby solving the problem of incomplete combustion of waste gas or waste of resources.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for harmlessly treating waste gas and recycling it for combustion, comprising:

[0008] A cooling mechanism, the cooling mechanism being used to reduce the exhaust gas temperature;

[0009] an impurity removal mechanism, the impurity removal mechanism being connected to the cooling mechanism via a first exhaust gas connecting pipe and being used to filter impurities in the exhaust gas;

[0010] a combustion mechanism, the combustion mechanism being connected to the impurity removal mechanism via a third exhaust gas connecting pipe and being used for fully burning the exhaust gas;

[0011] During the waste gas treatment process, since activated carbon cannot work at high temperatures, the temperature of the waste gas needs to be lowered through a cooling mechanism, and then some harmful impurities in the waste gas need to be filtered out through a removal mechanism. The waste gas finally flows into the combustion mechanism, and natural gas is introduced to assist the waste gas in complete combustion.

[0012] Preferably, the cooling mechanism includes:

[0013] A spray assembly, wherein the spray assembly cools the exhaust gas by spraying cooling water;

[0014] The water retaining assembly is used to retain oil droplets and water vapor carried in the exhaust gas, and can also adjust the flow rate of the exhaust gas.

[0015] Preferably, the spray assembly includes:

[0016] A spray box, wherein an air inlet pipe is provided on one side of the spray box;

[0017] a partition, the partition being arranged inside the spray box;

[0018] A water pump is installed on the top of the spray box;

[0019] A water pumping pipe, one end of which is connected to the water inlet of the water pump, and the other end of which is connected to the bottom of one side of the spray box;

[0020] A spray pipe, the spray pipe being connected to the water outlet of the water pump;

[0021] A nozzle is arranged on the spray pipe.

[0022] Preferably, the water retaining assembly includes:

[0023] a water retaining box, the water retaining box being arranged on one side of the spray box and being in communication with the spray box;

[0024] A fixing plate, the fixing plate being arranged on the top of the water retaining box;

[0025] a first telescopic rod, the first telescopic rod being arranged on one side of the fixing plate;

[0026] a first spring, wherein the first spring is sleeved on the first telescopic rod;

[0027] a push plate connected to the first telescopic rod;

[0028] A push post, the push post being arranged on the top of the push plate;

[0029] A connecting plate, wherein a sliding groove is provided inside the connecting plate;

[0030] A rotating shaft, the rotating shaft is inserted into the interior of the water retaining box and connected to the connecting plate;

[0031] a water baffle, the water baffle being connected to the rotating shaft;

[0032] A baffle rod is arranged on the top of the water baffle box.

[0033] Preferably, the impurity removal mechanism includes:

[0034] A filter assembly, the filter assembly being used to filter some harmful impurities in the exhaust gas;

[0035] An air extraction component is used to help the exhaust gas pass through the filter component at an accelerated speed.

[0036] Preferably, the filter assembly comprises:

[0037] A filter box, the bottom of which is connected to the water retaining box through the first exhaust gas connecting pipe;

[0038] a bottom plate, the bottom plate being arranged inside the filter box;

[0039] A top plate, the top plate is arranged inside the filter box, and a plurality of through grooves are evenly formed inside the top plate;

[0040] A sliding seat, the sliding seat being arranged at the bottom of the top plate;

[0041] A pull-out box is slidably arranged on the top of the bottom plate;

[0042] An activated carbon plate, the activated carbon plate being inserted into the interior of the pull-out box;

[0043] a blocking plate, the blocking plate being inserted into the interior of the sliding seat;

[0044] a fixing block, the fixing block being arranged at the bottom of the top plate;

[0045] a second telescopic rod, the second telescopic rod being arranged on one side of the fixed block;

[0046] a second spring, the second spring being sleeved on the second telescopic rod;

[0047] a connecting block, the connecting block being arranged on one side of the blocking plate and connected to the second telescopic rod;

[0048] A stopper, the stopper being arranged at the bottom of one side of the pull-out box;

[0049] A rotating buckle is arranged on one side of the filter box.

[0050] Preferably, the air extraction component includes:

[0051] A mounting seat, the mounting seat being arranged on the filter box;

[0052] An air extraction motor, the air extraction motor is mounted on the top of the mounting base;

[0053] a first pulley, the first pulley being drivingly connected to the output end of the air extraction motor;

[0054] a first rotating shaft, one end of the first rotating shaft being drivingly connected to one end of the first pulley;

[0055] a first impeller, the first impeller being transmission-connected to one end of the first rotating shaft, the first impeller being disposed inside the third exhaust gas connecting pipe, and the third exhaust gas connecting pipe being connected to the filter box via a second exhaust gas connecting pipe;

[0056] a second pulley;

[0057] a second rotating shaft, one end of the second rotating shaft being drivingly connected to the second pulley;

[0058] a second impeller, the second impeller being drivingly connected to one end of the second rotating shaft and disposed inside the oxygen delivery pipe;

[0059] a belt, the belt being used to connect the first pulley and the second pulley;

[0060] A fastening ring is arranged on the top of the mounting seat.

[0061] Preferably, the combustion mechanism comprises:

[0062] A quantity control component, the quantity control component is used to adjust the supply of natural gas and oxygen according to the exhaust gas flow rate;

[0063] A charging and combustion component promotes the combustion reaction by preheating the exhaust gas.

[0064] Preferably, the quantity control component includes:

[0065] A quantity control box, wherein the quantity control box is provided with channels for oxygen and natural gas to flow;

[0066] A stepper motor is installed on the top of the quantity control box;

[0067] A slide rail, the slide rail being arranged on the top of the quantity control box;

[0068] a slider, the slider being slidably connected to the slide rail;

[0069] A screw rod, one end of which is drivingly connected to the output end of the stepping motor;

[0070] A push rod, which is arranged on both sides of the slider and has a sliding groove inside;

[0071] A fixed column, the fixed column being slidably connected to a sliding groove inside the push rod;

[0072] A connecting plate, the connecting plate being arranged at the bottom of the fixing column;

[0073] a rotary valve, the rotary valve being arranged inside the quantity control box and connected to the connecting plate;

[0074] An ultrasonic flow velocity sensor is used to detect the exhaust gas flow velocity.

[0075] Preferably, the charging and burning assembly includes:

[0076] combustion chamber;

[0077] an exhaust gas heating chamber, the exhaust gas heating chamber being arranged outside the combustion chamber;

[0078] A ventilation plate, the ventilation plate is arranged inside the exhaust gas heating chamber, and the ventilation plate is provided with a plurality of through holes;

[0079] a connecting chamber, the connecting chamber being arranged at the bottom of the combustion chamber and communicating with the combustion chamber;

[0080] A gas mixing orifice plate, the gas mixing orifice plate being arranged inside the combustion chamber;

[0081] an ignition plug disposed inside the combustion chamber;

[0082] A connecting pipe is used to connect the exhaust gas heating chamber and the connecting chamber, and the ultrasonic flow velocity sensor is arranged on the connecting pipe.

[0083] The beneficial effects of the present invention are:

[0084] (1) The present invention can effectively reduce the temperature of the exhaust gas and dissolve some impurities by setting a spray component in the cooling mechanism, thereby avoiding the activated carbon plate in the filter component from working at high temperature and ensuring the filtering effect of the activated carbon plate.

[0085] (2) The present invention sets a water-blocking component in the cooling mechanism, which can, on the one hand, block the oil droplets and water vapor carried in the exhaust gas, and on the other hand, adjust the flow rate of the exhaust gas to ensure that the flow rate of the exhaust gas is relatively stable. The faster the flow rate of the exhaust gas, the greater the obstruction to the exhaust gas.

[0086] (3) The present invention provides a filter assembly and an exhaust assembly in the impurity removal mechanism. When the activated carbon plate is replaced, the exhaust gas can be ensured to pass normally from other activated carbon plates without suspending the work. Secondly, the exhaust gas at the replacement location is blocked to prevent unfiltered exhaust gas from passing through. The exhaust assembly can accelerate the passage of the exhaust gas through the activated carbon plate and, on the other hand, can pump more oxygen into the combustion mechanism to promote the combustion reaction.

[0087] (4) The present invention can precisely control the amount of natural gas and oxygen according to the amount of waste gas by setting up a control component in the combustion mechanism. While ensuring that the waste gas is fully burned, as little natural gas as possible is introduced to reduce the waste of resources. In addition, the combustion reaction can be effectively promoted by preheating the waste gas through the combustion component.

[0088] In summary, the present invention has the advantages of efficient waste gas treatment, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0090] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0091] Figure 3 This is a schematic diagram of the cooling mechanism structure of the present invention;

[0092] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0093] Figure 5 This is a schematic diagram of the spray pipe structure of the present invention;

[0094] Figure 6 This is a schematic structural diagram of the water retaining plate of the present invention;

[0095] Figure 7 This is a schematic structural diagram of the impurity removal mechanism of the present invention;

[0096] Figure 8 for Figure 7 The enlarged structural diagram at B in the middle;

[0097] Figure 9 for Figure 7 The enlarged structural diagram at C in the middle;

[0098] Figure 10 This is a cross-sectional view of the filter box of the present invention;

[0099] Figure 11 This is a schematic diagram of the top plate structure of the present invention;

[0100] Figure 12 This is an exploded view of the top plate and blocking plate of the present invention;

[0101] Figure 13 This is a schematic diagram of the structure of the pull-out box of the present invention;

[0102] Figure 14 for Figure 13 The enlarged structural diagram at D in the middle;

[0103] Figure 15 This is a schematic structural diagram of the first impeller and the second impeller of the present invention;

[0104] Figure 16 This is a schematic diagram of the combustion mechanism of the present invention;

[0105] Figure 17 A cross-sectional view of the combustion chamber and exhaust gas heating chamber of the present invention;

[0106] Figure 18 for Figure 17 Enlarged structural diagram at E in the middle.

[0107] In the picture:

[0108] 1. Cooling mechanism; 11. Spray assembly; 111. Spray box; 112. Air inlet pipe; 113. Partition; 114. Water pump; 115. Water extraction pipe; 116. Spray pipe; 117. Spray head; 12. Water retaining assembly; 121. Water retaining box; 122. Fixed plate; 123. First telescopic rod; 124. First spring; 125. Push plate; 126. Push column; 127. Connecting plate; 128. Rotating shaft; 129. Water retaining plate; 1210. Retaining rod;

[0109] 2. Debris removal mechanism; 21. Filter assembly; 211. Filter box; 212. Bottom plate; 213. Top plate; 214. Sliding seat; 215. Pull-out box; 216. Activated carbon plate; 217. Blocking plate; 218. Fixing block; 219. Second telescopic rod; 2110. Second spring; 2111. Connecting block; 2112. Stopper; 2113. Rotating buckle; 22. Exhaust assembly; 221. Mounting seat; 222. Exhaust motor; 223. First pulley; 224. First rotating shaft; 225. First impeller; 226. Second pulley; 227. Second rotating shaft; 228. Second impeller; 229. Belt; 2210. Fastening ring;

[0110] 3. Combustion mechanism; 31. Quantity control assembly; 311. Quantity control box; 312. Stepper motor; 313. Slide rail; 314. Slider; 315. Screw; 316. Push rod; 317. Fixing column; 318. Connecting plate; 319. Rotary valve; 3110. Ultrasonic flow sensor; 32. Charging assembly; 321. Combustion chamber; 322. Exhaust gas heating chamber; 323. Ventilation plate; 324. Connecting chamber; 325. Mixing orifice plate; 326. Ignition plug; 327. Connecting pipe;

[0111] 40. First exhaust gas connecting pipe; 41. Second exhaust gas connecting pipe; 42. Third exhaust gas connecting pipe; 43. Oxygen delivery pipe. DETAILED DESCRIPTION

[0112] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0113] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0114] Example 1

[0115] like Figures 1 to 2 As shown, this embodiment provides a device for harmlessly treating waste gas and recycling it for combustion, comprising:

[0116] A cooling mechanism 1, wherein the cooling mechanism 1 is used to reduce the exhaust gas temperature;

[0117] an impurity removal mechanism 2, the impurity removal mechanism 2 being connected to the cooling mechanism 1 via a first exhaust gas connecting pipe 40 and being used to filter impurities in the exhaust gas;

[0118] A combustion mechanism 3, which is connected to the impurity removal mechanism 2 via a third exhaust gas connecting pipe 42 and is used to fully burn the exhaust gas;

[0119] During the waste gas treatment process, since activated carbon cannot work at high temperatures, it is necessary to lower the temperature of the waste gas through the cooling mechanism 1, and then filter out some harmful impurities in the waste gas through the impurity removal mechanism 2. The waste gas finally flows into the combustion mechanism 3, and natural gas is introduced to assist the waste gas in complete combustion.

[0120] like Figure 3 As shown, the cooling mechanism 1 includes:

[0121] A spray assembly 11, wherein the spray assembly 11 cools the exhaust gas by spraying cooling water;

[0122] The water retaining assembly 12 is used to retain oil droplets and water vapor carried in the exhaust gas, and can also adjust the flow rate of the exhaust gas.

[0123] In this embodiment, by setting a spray component 11 in the cooling mechanism 1, the spray component 11 reduces the exhaust gas temperature by spraying cooling water to prevent the activated carbon from working at high temperature. By setting a water retaining component 12, the oil droplets and water vapor carried in the exhaust gas can be effectively blocked, and the exhaust gas flow rate can also be adjusted.

[0124] like Figure 3 and Figure 5 As shown, the spray assembly 11 includes:

[0125] A spray box 111, one side of which is provided with an air inlet pipe 112;

[0126] a partition 113, the partition 113 being disposed inside the spray box 111;

[0127] A water pump 114 is installed on the top of the spray box 111;

[0128] A water pumping pipe 115 , one end of which is connected to the water inlet of the water pump 114 , and the other end of which is connected to the bottom of one side of the spray box 111 ;

[0129] A spray pipe 116 , the spray pipe 116 being connected to a water outlet of the water pump 114 ;

[0130] The nozzle 117 is disposed on the spray pipe 116 .

[0131] In this embodiment, the internal space of the spray box 111 is divided by the partition 113, which increases the flow path of the exhaust gas and the contact time between the exhaust gas and the cooling water, which can better reduce the temperature of the exhaust gas and dissolve some water-soluble impurities in the exhaust gas in the process.

[0132] In detail, after the exhaust gas enters the spray box 111 through the air inlet pipe 112, it moves along the path divided by the partition 113. During this process, the water pump 114 pumps water from the bottom of the spray box 111 through the pumping pipe 115, and finally sprays it out through the nozzle 117 on the spray pipe 116, thereby reducing the exhaust gas temperature and dissolving some impurities.

[0133] It should be noted that the spray box 111 is also provided with a water inlet and a water outlet to facilitate the replacement of cooling water.

[0134] like Figure 4 and Figure 6 As shown, the water retaining assembly 12 includes:

[0135] A water retaining box 121 is provided on one side of the spray box 111 and is in communication with the spray box 111;

[0136] A fixing plate 122 , the fixing plate 122 being disposed on the top of the water retaining box 121 ;

[0137] a first telescopic rod 123 , which is disposed on one side of the fixing plate 122 ;

[0138] A first spring 124, wherein the first spring 124 is sleeved on the first telescopic rod 123;

[0139] a push plate 125 connected to the first telescopic rod 123;

[0140] A push post 126 , the push post 126 being disposed on the top of the push plate 125 ;

[0141] A connecting plate 127, wherein a sliding groove is provided inside the connecting plate 127;

[0142] A rotating shaft 128 , which is inserted into the water retaining box 121 and connected to the connecting plate 127 ;

[0143] a water baffle 129 connected to the rotating shaft 128;

[0144] The baffle rod 1210 is arranged on the top of the water baffle box 121 .

[0145] In this embodiment, by setting up a water baffle 129, the oil droplets and water vapor in the exhaust gas will hit the water baffle 129 due to their large inertia and will not have time to change direction. They will fall into the spray box 111 under the action of gravity. The angle of the water baffle 129 can also be adjusted according to the exhaust gas flow rate to ensure the stability of the exhaust gas flow rate.

[0146] In detail, the push plate 125 will push the push column 126 on the connecting plate 127 under the push of the first spring 124, so that the water baffle 129 is deflected by a certain angle. When the exhaust gas flow rate increases, the exhaust gas will exert a certain pressure on the surface of the water baffle 129, and the deflection angle of the water baffle 129 will become smaller, thereby increasing the obstruction to the exhaust gas and reducing the exhaust gas flow rate. Similarly, when the exhaust gas flow rate decreases, the obstruction to the exhaust gas will also decrease, so as to ensure that the inflowing exhaust gas flow rate is relatively stable.

[0147] It should be noted that the blocking rod 1210 can limit the water baffle 129 to deflect in only one direction, thereby avoiding the problem that the exhaust gas flow rate is too high, resulting in the water baffle 129 having less obstruction to the exhaust gas.

[0148] like Figure 7 As shown, the impurity removal mechanism 2 includes:

[0149] The filter assembly 21 is used to filter some harmful impurities in the exhaust gas;

[0150] The air extraction component 22 is used to help the exhaust gas pass through the filter component 21 at an accelerated speed.

[0151] In this embodiment, by setting up the filter component 21 in the impurity removal mechanism 2, some harmful impurities in the exhaust gas can be effectively filtered out. The exhaust component 22 can accelerate the outflow of the exhaust gas from the filter component 21 on the one hand, and on the other hand, it can pump oxygen to the combustion mechanism 3 to promote the subsequent combustion reaction.

[0152] like Figures 9 to 14 As shown, the filter assembly 21 includes:

[0153] A filter box 211, the bottom of which is connected to the water retaining box 121 through the first exhaust gas connecting pipe 40;

[0154] A bottom plate 212 is provided inside the filter box 211;

[0155] A top plate 213 is provided inside the filter box 211 and has multiple through grooves uniformly formed therein;

[0156] A sliding seat 214 is provided at the bottom of the top plate 213;

[0157] A drawer box 215 is slidably disposed on the top of the bottom plate 212;

[0158] An activated carbon plate 216 , which is inserted into the pull-out box 215 ;

[0159] a blocking plate 217 inserted into the interior of the sliding seat 214;

[0160] A fixing block 218 , the fixing block 218 being disposed at the bottom of the top plate 213 ;

[0161] a second telescopic rod 219 , which is disposed on one side of the fixing block 218 ;

[0162] A second spring 2110, which is sleeved on the second telescopic rod 219;

[0163] a connecting block 2111 , the connecting block 2111 being disposed on one side of the blocking plate 217 and connected to the second telescopic rod 219 ;

[0164] A stopper 2112 is provided at the bottom of one side of the drawer box 215;

[0165] The rotating buckle 2113 is provided on one side of the filter box 211 .

[0166] In this embodiment, by setting up a plurality of independent activated carbon plates 216, on the one hand, the contact area with the exhaust gas is increased, and the contact time between the exhaust gas and the activated carbon plates 216 is prolonged, which can better absorb impurities in the exhaust gas. On the other hand, when a certain activated carbon plate 216 is replaced, the other activated carbon plates 216 work normally and the filtering work will not be suspended. Moreover, when the activated carbon plate 216 is replaced, the exhaust gas here can be quickly blocked to prevent the outflow of unfiltered exhaust gas.

[0167] In detail, the pull-out box 215 is placed on the bottom plate 212. When the activated carbon plate 216 needs to be replaced, the rotating buckle 2113 is rotated to open, the pull-out box 215 is pulled out, and the activated carbon plate 216 on the pull-out box 215 is replaced. At this time, the second spring 2110 pushes the connecting block 2111 to move, thereby driving the blocking plate 217 inside the sliding seat 214 to slide outward a certain distance. The through groove of the blocking plate 217 is misaligned with the through groove on the top plate 213, and the exhaust gas cannot pass through. When the pull-out box 215 with the replaced activated carbon plate 216 is pushed back in, the pull-out box 215 drives the blocking plate 217 to move inward, and the through groove on the blocking plate 217 is realigned with the through groove on the top plate 213, and the exhaust gas can pass through the activated carbon plate 216 and flow through the through groove here.

[0168] It should be noted that the block 2112 can prevent the pull-out box 215 from being completely pulled out of the filter box 211 to avoid leakage of exhaust gas. A handle is provided on the pull-out box 215 for easy pulling out. The bottom of the bottom plate 212 is curved to disperse the exhaust gas to both sides, and support legs are provided at the bottom of the filter box 211.

[0169] like Figure 8 and Figure 15 As shown, the air extraction component 22 includes:

[0170] A mounting seat 221, the mounting seat 221 is provided on the filter box 211;

[0171] An air extraction motor 222 is mounted on the top of the mounting base 221;

[0172] A first pulley 223 , the first pulley 223 is drivingly connected to the output end of the exhaust motor 222 ;

[0173] a first rotating shaft 224 , one end of which is drivingly connected to one end of the first pulley 223 ;

[0174] a first impeller 225, the first impeller 225 being in driving connection with one end of the first rotating shaft 224, the first impeller 225 being disposed inside the third exhaust gas connecting pipe 42, and the third exhaust gas connecting pipe 42 being in communication with the filter box 211 via the second exhaust gas connecting pipe 41;

[0175] Second pulley 226;

[0176] A second rotating shaft 227, one end of which is drivingly connected to the second pulley 226;

[0177] a second impeller 228 , the second impeller 228 being drivingly connected to one end of the second rotating shaft 227 and disposed inside the oxygen delivery pipe 43;

[0178] a belt 229 , the belt 229 being used to connect the first pulley 223 and the second pulley 226 ;

[0179] The fastening ring 2210 is disposed on the top of the mounting seat 221 .

[0180] In this embodiment, the first impeller 225 is provided to extract the gas above the filter box 211 to form a low-pressure area, accelerate the exhaust gas to pass through the filter assembly 21, and simultaneously drive the second impeller 228 to pump oxygen for the combustion mechanism 3.

[0181] In detail, the exhaust motor 222 drives the first impeller 225 to rotate through the first rotating shaft 224 to extract the exhaust gas in the filter box 211. The first pulley 223 drives the second pulley 226 to rotate through the belt 229, and then drives the second rotating shaft 227 and the second impeller 228 to rotate to pump oxygen for the combustion mechanism 3.

[0182] It should be noted that the fastening ring 2210 is sleeved on the third exhaust gas connecting pipe 42 and the oxygen delivery pipe 43 to ensure the stability of the third exhaust gas connecting pipe 42 and the oxygen delivery pipe 43.

[0183] Example 2

[0184] like Figure 16 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that the combustion mechanism 3 includes:

[0185] A quantity control component 31, the quantity control component 31 is used to adjust the supply of natural gas and oxygen by the exhaust gas flow rate;

[0186] The charging and combustion component 32 promotes the combustion reaction by preheating the exhaust gas.

[0187] In this embodiment, by setting up the control component 31 in the combustion mechanism 3, the flow of natural gas and oxygen can be quantitatively controlled according to the flow of exhaust gas. Under the premise of ensuring sufficient combustion of exhaust gas, as little natural gas as possible is used to reduce waste of resources. The charging component 32 preheats the exhaust gas before burning it, so that the exhaust gas is raised to a higher temperature before combustion, which can promote the combustion reaction and is conducive to the full combustion of exhaust gas.

[0188] like Figure 18 As shown, the control component 31 includes:

[0189] A quantity control box 311, wherein the quantity control box 311 is provided with channels for oxygen and natural gas to flow;

[0190] A stepper motor 312 is mounted on the top of the quantity control box 311;

[0191] A slide rail 313 is provided on the top of the quantity control box 311;

[0192] A slider 314 , wherein the slider 314 is slidably connected to the slide rail 313 ;

[0193] A screw rod 315 , one end of which is drivingly connected to the output end of the stepping motor 312 ;

[0194] Push rods 316 , which are disposed on both sides of the slider 314 and have sliding grooves disposed therein;

[0195] A fixed column 317, wherein the fixed column 317 is slidably connected to a sliding groove inside the push rod 316;

[0196] A connecting plate 318 , the connecting plate 318 being disposed at the bottom of the fixing column 317 ;

[0197] a rotary valve 319 , which is disposed inside the quantity control box 311 and connected to the connecting plate 318 ;

[0198] The ultrasonic flow rate sensor 3110 is used to detect the exhaust gas flow rate.

[0199] In this embodiment, the exhaust gas flow rate is monitored by the ultrasonic flow rate sensor 3110, and the supply of natural gas and oxygen is adjusted accordingly, which can avoid the problem of insufficient exhaust gas combustion when the natural gas supply is small or the waste of resources when the natural gas supply is excessive.

[0200] Specifically, based on the changes in exhaust gas flow rate detected by the ultrasonic flow sensor 3110, the stepper motor 312 drives the slider 314 to slide on the slide rail 313 via the screw rod 315, thereby driving the push rods 316 on both sides to move. The push rods 316 change the deflection angle of the rotary valve 319 by driving the fixed column 317 on the connecting plate 318 to move, thereby adjusting the supply of natural gas and oxygen.

[0201] It should be noted that the quantity control box 311 is provided with inlets for oxygen and natural gas, and its oxygen and natural gas outlets are in communication with the connecting chamber 324 .

[0202] like Figure 17 As shown, the charging and burning assembly 32 includes:

[0203] combustion chamber 321;

[0204] An exhaust gas heating chamber 322 , the exhaust gas heating chamber 322 being disposed outside the combustion chamber 321 ;

[0205] A vent plate 323 is provided inside the exhaust gas heating chamber 322 and has a plurality of through holes;

[0206] a connecting chamber 324 , the connecting chamber 324 being disposed at the bottom of the combustion chamber 321 and communicating with the combustion chamber 321 ;

[0207] A gas mixing orifice plate 325 , the gas mixing orifice plate 325 is disposed inside the combustion chamber 321 ;

[0208] an ignition plug 326 disposed inside the combustion chamber 321;

[0209] The connecting pipe 327 is used to connect the exhaust gas heating chamber 322 and the connecting chamber 324 , and the ultrasonic flow velocity sensor 3110 is arranged on the connecting pipe 327 .

[0210] In this embodiment, by providing the exhaust gas heating chamber 322, the exhaust gas is preheated first, and the temperature of the exhaust gas is increased before combustion, which can effectively promote the combustion reaction and facilitate the complete combustion of the exhaust gas.

[0211] In detail, after the exhaust gas enters the exhaust gas heating chamber 322, it passes through multiple ventilation plates 323, which can extend the flow path of the exhaust gas and allow the exhaust gas to be fully heated. The exhaust gas finally enters the connecting chamber 324 through the connecting pipe 327. The exhaust gas, together with oxygen and natural gas, passes through the mixing orifice plate 325 and is fully mixed, and is ignited by the ignition plug 326.

[0212] It should be noted that a smoke outlet is provided above the combustion chamber 321, and the exhaust gas heating chamber 322 can reduce the heat dissipation inside the combustion chamber 321, increase the temperature inside the combustion chamber 321, and make the exhaust gas burn more fully. Support legs are provided at the bottom of the combustion chamber 321.

[0213] Working process

[0214] During the waste gas treatment process, the spray component 11 first lowers the temperature of the waste gas by spraying cooling water to prevent the activated carbon plate from working at high temperature. Then the waste gas passes through the water retaining component 12, and the oil droplets and water vapor in the waste gas are blocked by inertia. After that, the waste gas enters the filter component 21 to filter out some harmful impurities in the waste gas. The exhaust component 22 sends both the waste gas and oxygen to the combustion mechanism 3. The waste gas first passes through the waste gas heating chamber 322 in the charging component 32 to increase its own temperature in order to promote the combustion reaction, and the oxygen and natural gas first flow into the quantity control component 31, and the output of oxygen and natural gas is adjusted according to the size of the waste gas flow rate to ensure that the waste gas, natural gas and oxygen are fully mixed in a certain proportion, thereby avoiding the waste of resources and the problem of insufficient combustion of waste gas.

[0215] 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 scope of protection of the present invention.

Claims

1. A harmless waste gas recycling and combustion device, characterized in that: include: A cooling mechanism, the cooling mechanism being used to reduce the exhaust gas temperature; an impurity removal mechanism, the impurity removal mechanism being connected to the cooling mechanism via a first exhaust gas connecting pipe and being used to filter impurities in the exhaust gas; a combustion mechanism, the combustion mechanism being connected to the impurity removal mechanism via a third exhaust gas connecting pipe and being used for fully burning the exhaust gas; The cooling mechanism comprises: A spray assembly, wherein the spray assembly cools the exhaust gas by spraying cooling water; A water retaining assembly, which is used to retain oil droplets and water vapor carried in the exhaust gas and can regulate the flow rate of the exhaust gas; The spray assembly comprises: A spray box, wherein an air inlet pipe is provided on one side of the spray box; a partition, the partition being arranged inside the spray box; A water pump is installed on the top of the spray box; A water pumping pipe, one end of which is connected to the water inlet of the water pump, and the other end of which is connected to the bottom of one side of the spray box; A spray pipe, the spray pipe being connected to the water outlet of the water pump; A nozzle, the nozzle being arranged on the spray pipe; The water retaining assembly comprises: a water retaining box, the water retaining box being arranged on one side of the spray box and being in communication with the spray box; A fixing plate, the fixing plate being arranged on the top of the water retaining box; a first telescopic rod, the first telescopic rod being arranged on one side of the fixing plate; a first spring, wherein the first spring is sleeved on the first telescopic rod; a push plate connected to the first telescopic rod; A push post, the push post being arranged on the top of the push plate; A connecting plate, wherein a sliding groove is provided inside the connecting plate; A rotating shaft, the rotating shaft is inserted into the interior of the water retaining box and connected to the connecting plate; a water baffle connected to the rotating shaft; A baffle rod, the baffle rod being arranged on the top of the water baffle box; The impurity removal mechanism comprises: A filter assembly, the filter assembly being used to filter some harmful impurities in the exhaust gas; An air extraction component, the air extraction component is used to help the exhaust gas pass through the filter component at an accelerated speed; The filter assembly comprises: A filter box, the bottom of which is connected to the water retaining box through the first exhaust gas connecting pipe; a bottom plate, the bottom plate being arranged inside the filter box; A top plate, the top plate is arranged inside the filter box, and a plurality of through grooves are evenly arranged inside the top plate; A sliding seat, the sliding seat being arranged at the bottom of the top plate; A pull-out box is slidably arranged on the top of the bottom plate; An activated carbon plate, the activated carbon plate being inserted into the interior of the pull-out box; a blocking plate, the blocking plate being inserted into the interior of the sliding seat; a fixing block, the fixing block being arranged at the bottom of the top plate; a second telescopic rod, the second telescopic rod being arranged on one side of the fixed block; a second spring, the second spring being sleeved on the second telescopic rod; a connecting block, the connecting block being arranged on one side of the blocking plate and connected to the second telescopic rod; A stopper, the stopper being arranged at the bottom of one side of the pull-out box; A rotating buckle is arranged on one side of the filter box.

2. The harmless waste gas recycling and combustion device according to claim 1 is characterized in that: The air extraction component comprises: A mounting seat, the mounting seat being arranged on the filter box; An air extraction motor, the air extraction motor is mounted on the top of the mounting base; a first pulley, the first pulley being drivingly connected to the output end of the air extraction motor; a first rotating shaft, one end of the first rotating shaft being drivingly connected to one end of the first pulley; a first impeller, the first impeller being transmission-connected to one end of the first rotating shaft, the first impeller being disposed inside the third exhaust gas connecting pipe, and the third exhaust gas connecting pipe being connected to the filter box via a second exhaust gas connecting pipe; a second pulley; a second rotating shaft, one end of the second rotating shaft being drivingly connected to the second pulley; a second impeller, the second impeller being drivingly connected to one end of the second rotating shaft and disposed inside the oxygen delivery pipe; a belt, the belt being used to connect the first pulley and the second pulley; A fastening ring is arranged on the top of the mounting seat.

3. The harmless waste gas recycling and combustion device according to claim 1 is characterized in that: The combustion mechanism comprises: A quantity control component, the quantity control component is used to adjust the supply of natural gas and oxygen according to the exhaust gas flow rate; A charging and combustion component promotes the combustion reaction by preheating the exhaust gas.

4. The harmless waste gas recycling and combustion device according to claim 3 is characterized in that: The quantity control component includes: A quantity control box, wherein the quantity control box is provided with channels for oxygen and natural gas to flow; A stepper motor is installed on the top of the quantity control box; A slide rail, the slide rail being arranged on the top of the quantity control box; a slider, the slider being slidably connected to the slide rail; A screw rod, one end of which is drivingly connected to the output end of the stepping motor; A push rod, which is arranged on both sides of the slider and has a sliding groove inside; A fixed column, the fixed column being slidably connected to a sliding groove inside the push rod; A connecting plate, the connecting plate being arranged at the bottom of the fixing column; a rotary valve, the rotary valve being arranged inside the quantity control box and connected to the connecting plate; An ultrasonic flow velocity sensor is used to detect the exhaust gas flow velocity.

5. The harmless waste gas recycling and combustion device according to claim 4 is characterized in that: The charging and burning assembly comprises: combustion chamber; an exhaust gas heating chamber, the exhaust gas heating chamber being arranged outside the combustion chamber; A ventilation plate, the ventilation plate is arranged inside the exhaust gas heating chamber, and the ventilation plate is provided with a plurality of through holes; a connecting chamber, the connecting chamber being arranged at the bottom of the combustion chamber and communicating with the combustion chamber; A gas mixing orifice plate, the gas mixing orifice plate being arranged inside the combustion chamber; an ignition plug disposed inside the combustion chamber; A connecting pipe is used to connect the exhaust gas heating chamber and the connecting chamber, and the ultrasonic flow velocity sensor is arranged on the connecting pipe.

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