Atmospheric pollution treatment equipment for flame-retardant polyethylene cable material processing

Abstract

The invention relates to the technical field of pollution treatment, and discloses flame-retardant polyethylene cable material processing air pollution treatment equipment which comprises a combustion chamber, a first spiral combustion bed is rotationally arranged in the combustion chamber, a second spiral combustion bed is installed in the combustion chamber, and a first center shaft is connected to the middle of the first spiral combustion bed; the side part of the first central shaft is connected with a branch pipe communicated with the air inlet pipe, the side part of the first central shaft is provided with an oxygen supplementing nozzle, the side parts of the first spiral combustion bed and the second spiral combustion bed are both provided with microgrooves, the side part of the first spiral combustion bed is connected with a first partition plate, and the side part of the second spiral combustion bed is connected with a second partition plate; micropores are formed in the side parts of the first partition plate and the second partition plate. The oxygen supplementation spray head sprays extra oxygen, VOCs waste gas molecules which are not easy to decompose are intercepted by the microgrooves and the micropores for continuous combustion, the first spiral combustion bed rotates, waste gas on the rear side is pushed forwards, the combustion time is prolonged, waste gas decomposition is more thorough, the waste gas treatment effect is improved, and therefore air pollution is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pollution treatment, in particular, to an atmospheric pollution treatment equipment for processing flame-retardant polyethylene cable material. BACKGROUND

[0002] In the process of processing flame-retardant polyethylene cable material, the atmospheric pollution treatment equipment needs to purify the waste gas components (such as volatile organic compounds VOCs, particulate matter, hydrogen chloride, etc.) efficiently.

[0003] The commonly used equipment includes a wet electrostatic precipitator and a catalytic combustion equipment. The wet electrostatic precipitator combines water washing and electrostatic adsorption, enhances the particulate matter capture efficiency through a humid environment, and removes small particles and aerosols by using a high-voltage electrostatic field. It is suitable for treating dust-containing waste gas generated in the links of PVC granulation and flame retardant addition, and is especially suitable for high-temperature, high-humidity or corrosive gas environment. The catalytic combustion equipment oxidizes VOCs into CO2 and H2O at low temperature (200-400℃) under the action of a catalyst, and the heat recovery rate can reach more than 95%. It is suitable for treating high-concentration organic waste gas (such as chlorine-containing VOCs) generated by flame retardant pyrolysis, and is suitable for high-concentration waste gas. The noble metal catalyst (such as Pt / Pd) has a service life of 3-5 years. When using a VOC strong combustion equipment to treat high-concentration VOCs waste gas, the preheated waste gas needs to be introduced into a primary combustion chamber, and the waste gas is heated to a high temperature by the electric heating element in the primary combustion chamber to ignite the waste gas, so that the waste gas is burned and cracked. In order to ensure that the waste gas is fully burned, the waste gas that has passed through the primary combustion chamber needs to be introduced into a secondary combustion chamber for further combustion and decomposition, so that the VOCs waste gas is burned and decomposed into carbon dioxide and water vapor.

[0004] At present, multiple auxiliary combustion beds are usually arranged in the existing secondary combustion chamber to uniformly divide the secondary combustion chamber into multiple chambers. The auxiliary combustion beds are densely covered with micro-holes. The VOCs waste gas flows through the micro-holes on the combustion bed to the chambers in the secondary combustion chamber, so that the VOCs waste gas is burned again in the secondary combustion chamber. The molecules that are not easy to burn and decompose in the VOCs waste gas are adsorbed and intercepted by the micro-hole walls when flowing through the micro-holes of the combustion bed. Due to the large surface area of the hole wall, the VOCs molecules continuously contact the high-temperature environment in the hole wall, gradually undergo oxidation and cracking reactions, and finally are converted into carbon dioxide and water vapor, which are discharged into the atmosphere through a chimney. However, the speed of the VOCs waste gas flowing through the secondary combustion chamber is fast, which makes the VOCs waste gas not have enough time to burn, thereby easily causing the VOCs waste gas to be not fully burned and decomposed, resulting in a large amount of VOCs waste gas molecules being discharged into the atmosphere together with carbon dioxide and water vapor, which easily reduces the waste gas treatment effect and increases atmospheric pollution. Therefore, it does not meet the existing demand, and for this reason, we propose an atmospheric pollution treatment equipment for processing flame-retardant polyethylene cable material. SUMMARY

[0005] The present application provides a kind of flame-retardant polyethylene cable material processing atmospheric pollution treatment equipment, which can make VOCs exhaust combustion more sufficient by extending the time of VOCs exhaust combustion, reduce the content of VOCs exhaust molecules discharged into the atmosphere with carbon dioxide and water vapor as much as possible, thereby improving the effect of atmospheric pollution treatment, solving the problem of atmospheric pollution mentioned in the above background art due to insufficient VOCs exhaust combustion decomposition, which reduces the exhaust treatment effect, thereby increasing.

[0006] To achieve the above object, the present application provides a kind of flame-retardant polyethylene cable material processing atmospheric pollution treatment equipment, comprising combustion chamber and the gas inlet pipe and exhaust pipe connected at both ends of the combustion chamber respectively, first spiral combustion bed is rotationally arranged in the combustion chamber, second spiral combustion bed is installed in the combustion chamber, first center shaft is connected in the middle of the first spiral combustion bed, branch pipe is connected to the side of the first center shaft, the branch pipe is communicated with the gas inlet pipe, oxygen supplement nozzle is arranged on the side of the first center shaft, micro groove is arranged on the side of the first spiral combustion bed and the second spiral combustion bed, first baffle is connected to the side of the first spiral combustion bed, second baffle is connected to the side of the second spiral combustion bed, and micro hole is arranged on the side of the first baffle and the second baffle.

[0007] Optionally, the length of the first spiral combustion bed is greater than the length of the second spiral combustion bed, the second center shaft is connected in the middle of the second spiral combustion bed, the second spiral combustion bed is connected with the inner wall of the combustion chamber, one end of the first center shaft is rotationally arranged in the side wall of the combustion chamber, and the other end of the first center shaft is rotationally arranged at the end of the second center shaft.

[0008] Optionally, the end of the first center shaft is rotationally inserted into one end of the combustion chamber, the end of the first center shaft is sleeved with a first gear, a first motor is installed outside the combustion chamber, a second gear is installed on the output shaft of the first motor, the second gear is engaged with the first gear, the end of the first center shaft is rotationally connected with the gas inlet pipe, and a sealing connector is arranged at the rotationally connected position of the end of the first center shaft and the gas inlet pipe.

[0009] Optionally, the number of branch pipes is set to several, and several branch pipes are uniformly arranged in the combustion chamber, the side of each branch pipe is provided with a jet nozzle, the end of the first center shaft is provided with a gas cavity, the gas inlet pipe is communicated with one end of the gas cavity, and the other end of the gas cavity is communicated with the branch pipe.

[0010] Optionally, the number of the oxygen supplement nozzles is set to several, the several oxygen supplement nozzles are spirally arranged on the inside of the first central shaft, and the oxygen supplement nozzles are all arranged to be inclined to the surface of the first spiral combustion bed.

[0011] Optionally, the side of the first central shaft is movably provided with a guide vane, the number of the guide vanes is same as the number of the oxygen supplement nozzles, the guide vanes are arranged outside the corresponding oxygen supplement nozzles, the end of the guide vanes is connected with a sliding block, the inside of the first central shaft is provided with a sliding groove matched with the sliding block, the sliding block is slidably arranged in the sliding groove, the gas cavity is provided with a connecting disc, the outside of the connecting disc is mounted with a connecting rod, the number of the connecting rods is same as the number of the sliding blocks, and the end of each connecting rod is rotatably connected with the corresponding sliding block. The gas cavity and the air inlet pipe are jointly provided with a sliding rod, the connecting disc is rotatably connected at the end of the sliding rod, the sliding rod and the middle part of the connecting disc are jointly and slidably inserted with an oxygen supplement pipe, one end of the oxygen supplement pipe is inserted on the side wall of the air inlet pipe, and the other end of the oxygen supplement pipe is communicated with the oxygen supplement nozzle.

[0012] Optionally, the outside of the sliding rod is mounted with a rack, the outside of the air inlet pipe is mounted with a second motor, the output shaft of the second motor is rotatably inserted on the side wall of the air inlet pipe, the end of the output shaft of the second motor is mounted with a third gear, and the third gear is meshed with the rack.

[0013] Optionally, the middle part of the first partition plate is rotatably provided with an opening and closing plate, the side of the opening and closing plate is also provided with the micro holes, the outside of the opening and closing plate is mounted with a rotating shaft, the rotating shaft is rotatably inserted in the inside of the first partition plate, the outside of the rotating shaft is sleeved with a torsional spring, and the two ends of the torsional spring are respectively connected with the opening and closing plate and the inner wall of the first partition plate.

[0014] Optionally, the inside of the first central shaft is slidably provided with a first wedge-shaped block, the outside of the first wedge-shaped block is mounted with a push rod, the push rod is slidably inserted in the side of the first central shaft, one of the guide vanes intermittently abuts against the push rod, the inside of the first central shaft is also slidably provided with a second wedge-shaped block matched with the first wedge-shaped block, the outside of the second wedge-shaped block is mounted with a spring, and the two ends of the spring are respectively connected with the second wedge-shaped block and the inner wall of the first central shaft.

[0015] Optionally, a bolt is jointly inserted between the first central shaft and the first partition plate, one end of the bolt is connected with the second wedge-shaped block, the side of the first partition plate is provided with a slot matched with the bolt, and the other end of the bolt is inserted in the slot.

[0016] By the technical scheme, the atmospheric pollution treatment equipment for processing the flame-retardant polyethylene cable material provided by the present application has the following advantages: the VOCs waste gas is evenly sprayed into the combustion chamber through the inlet pipe and the branch pipe, at the initial stage of combustion, additional oxygen is sprayed into the first spiral combustion bed through the oxygen supplementing nozzle, the VOCs waste gas is combusted in the combustion chamber, the molecules that are not easy to decompose are adsorbed and retained by the microgrooves and the micropores for continuous combustion and decomposition, if the amount of the VOCs waste gas on the front side of the first partition is too large, the opening and closing plate can be pushed and turned over, so that the VOCs waste gas diffuses backward through the channel between the opening and closing plate and the first partition, and the VOCs waste gas diffused to the rear side is pushed forward again through the rotation of the first spiral combustion bed, so as to prolong the combustion and decomposition time of the VOCs waste gas in the combustion chamber as much as possible, make the decomposition of the VOCs waste gas more thorough, improve the waste gas treatment effect, and thus reduce atmospheric pollution.

[0017] Other features and advantages of the present application will be explained in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the present application, but do not constitute a limitation on the present application. In the drawings: Figure 1 It is an internal perspective structure diagram of the present application.

[0019] Figure 2 It is an internal top view perspective structure diagram of the present application.

[0020] Figure 3 It is an internal left view perspective structure diagram of the present application.

[0021] Figure 4 It is a perspective structure diagram of the combustion chamber of the present application.

[0022] Figure 5 It is a partial explosion diagram of the present application.

[0023] Figure 6 It is a rear view of the internal structure of the present application.

[0024] Figure 7 It is a partial cut structure diagram of the present application.

[0025] Figure 8 It is a Figure 7 It is an enlarged structure diagram of position A of the present application.

[0026] Figure 9 It is a guide vane closed cut structure diagram of the present application.

[0027] Figure 10 It is a perspective structure diagram of the opening and closing plate of the present application.

[0028] Figure 11 The figure is a schematic diagram of the expansion structure of the guide vane of the present application.

[0029] Figure 12 The figure is a schematic diagram of the closed three-dimensional structure of the guide vane of the present application.

[0030] The figure is a schematic diagram of the closed three-dimensional structure of the guide vane of the present application. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present disclosure more obvious and understandable, the specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present disclosure. However, the present disclosure can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present disclosure, so the present disclosure is not limited to the specific embodiments disclosed below.

[0032] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. The terms "first", "second" are used to distinguish one element from another element, and do not have sequential and important meanings. In addition, the following description, when referring to the drawings, the same reference numerals in different drawings represent the same or similar elements, and the present disclosure does not make redundant descriptions here.

[0033] In this disclosure, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0034] According to some embodiments of the present disclosure, a kind of flame-retardant polyethylene cable material processing atmospheric pollution treatment equipment is provided, referring to Figure 1 — Figure 12 The flame-retardant polyethylene cable material processing atmospheric pollution treatment equipment includes combustion chamber 100 and the gas inlet pipe 110 and exhaust pipe 120 connected at both ends of combustion chamber 100 respectively, VOCs exhaust gas after primary combustion enters combustion chamber 100 by gas inlet pipe 110, VOCs exhaust gas is decomposed into carbon dioxide and water vapor by combustion chamber 100, and is discharged by exhaust pipe 120, first spiral combustion bed 130 is rotationally arranged in combustion chamber 100, second spiral combustion bed 140 is fixedly installed in combustion chamber 100, the length of first spiral combustion bed 130 is greater than the length of second spiral combustion bed 140, first center shaft 150 is fixedly connected in the middle of first spiral combustion bed 130, second center shaft 151 is fixedly connected in the middle of second spiral combustion bed 140, second spiral combustion bed 140 is fixedly connected with the inner wall of combustion chamber 100, one end of first center shaft 150 is rotationally arranged in the side wall of combustion chamber 100 through bearing, and the other end of first center shaft 150 is rotationally arranged at the end of second center shaft 151.

[0035] Specifically, the end of first center shaft 150 outside combustion chamber 100 is provided with first gear 152 by interference, first motor 153 is fixedly installed outside combustion chamber 100, second gear 154 is fixedly installed on the output shaft of first motor 153, second gear 154 is engaged with first gear 152, the end of first center shaft 150 is rotationally connected with gas inlet pipe 110, and the rotationally connected part of first center shaft 150 and gas inlet pipe 110 is provided with sealing connector 155, sealing connector 155 is provided as sealing ring, and sealing ring is a conventional sealing technical means, to avoid VOCs exhaust gas leakage.

[0036] The first central shaft 150 is fixedly connected with a branch pipe 160 in the side portion, the branch pipe 160 is communicated with the air inlet pipe 110, the number of the branch pipe 160 is set to four, the four branch pipes 160 are evenly arranged in the circumferential direction in the combustion chamber 100, the side portion of the branch pipe 160 is provided with a plurality of air injection nozzles 161, the end portion of the first central shaft 150 is provided with a gas cavity 162, one end of the air inlet pipe 110 is communicated with the gas cavity 162, and the other end of the gas cavity 162 is communicated with the branch pipe 160.

[0037] In addition, the first central shaft 150 is fixedly provided with an oxygen supplement nozzle 170 in the side portion, the number of the oxygen supplement nozzle 170 is set to four, the four oxygen supplement nozzles 170 are spirally arranged on the inner side of the first central shaft 150, and the oxygen supplement nozzle 170 is inclinedly arranged towards the surface of the first spiral combustion bed 130, the first central shaft 150 is movably provided with a flow guide vane 171 in the side portion, the number of the flow guide vane 171 is the same as that of the oxygen supplement nozzle 170, the flow guide vane 171 is arranged on the outer side of the corresponding oxygen supplement nozzle 170, the end portion of the flow guide vane 171 is rotatably connected with a sliding block 172, the sliding block 172 is arranged in the shape of a cuboid block, the first central shaft 150 is provided with a sliding groove 173 matched with the sliding block 172 in the inner side, the sliding block 172 is slidably arranged in the sliding groove 173, a connecting disc 174 is arranged in the gas cavity 162, a connecting rod 175 is fixedly installed on the outer side of the connecting disc 174, the number of the connecting rod 175 is the same as that of the sliding block 172, and the end portion of each connecting rod 175 is rotatably connected with the corresponding sliding block 172. A sliding rod 176 is slidably arranged in the gas cavity 162 and the air inlet pipe 110, the connecting disc 174 is rotatably connected to the end portion of the sliding rod 176, the sliding rod 176 and the connecting disc 174 are slidably inserted with an oxygen supplement pipe 177 in the middle portion, one end of the oxygen supplement pipe 177 is inserted on the side wall of the air inlet pipe 110 in an interference fit, the other end of the oxygen supplement pipe 177 is communicated with the oxygen supplement nozzle 170, a rack 178 is fixedly installed on the outer side of the sliding rod 176, a second motor 179 is fixedly installed on the outer side of the air inlet pipe 110, the output shaft of the second motor 179 is rotatably inserted on the side wall of the air inlet pipe 110, and the insertion portion is sealed by a conventional technical means, a third gear 1791 is fixedly installed on the end portion of the output shaft of the second motor 179, and the third gear 1791 is engaged with the rack 178.

[0038] The first spiral combustion bed 130 and the second spiral combustion bed 140 are provided with micro grooves 180 on the side in a uniform manner, so that the inner wall of the micro groove 180 adsorbs and intercepts the VOC waste gas molecules that are not easy to decompose in the combustion chamber 100, the angle of the micro groove 180 is not parallel to the jet direction of the jet nozzle 161, and the airflow of the VOC waste gas is as far as possible to avoid blowing directly to the micro groove 180, so as to as far as possible to avoid the airflow blowing the VOC waste gas molecules adsorbed by the inner wall of the micro groove 180, the first partition plate 190 is connected to the side of the first spiral combustion bed 130, the second partition plate 200 is connected to the side of the second spiral combustion bed 140, and the first partition plate 190 and the second partition plate 200 are provided with micro holes 210 on the side in a uniform manner.

[0039] Reference Figure 1 Figure 12 As shown in the first partition plate 190, the middle part of the first partition plate 190 is provided with an opening and closing plate 220, the side of the opening and closing plate 220 is also provided with a micro hole 210, the outer side of the opening and closing plate 220 is fixedly installed with a rotating shaft 221, the rotating shaft 221 is rotatably inserted into the inner side of the first partition plate 190, the outer side of the rotating shaft 221 is sleeved with a torsional spring 222, and the two ends of the torsional spring 222 are fixedly connected with the opening and closing plate 220 and the inner wall of the first partition plate 190 respectively.

[0040] The first center shaft 150 is slidably provided with a first wedge block 230, the outer side of the first wedge block 230 is fixedly installed with a push rod 231, the push rod 231 is slidably inserted into the side of the first center shaft 150, and the push rod 231 is located outside the first center shaft 150, one of the guide vanes 171 intermittently contacts the push rod 231, and the first center shaft 150 is also slidably provided with a second wedge block 232, the second wedge block 232 is used in cooperation with the first wedge block 230, the outer side of the second wedge block 232 is fixedly installed with a spring 233, and the two ends of the spring 233 are fixedly connected with the second wedge block 232 and the inner wall of the first center shaft 150 respectively.

[0041] The first center shaft 150 and the first partition plate 190 are jointly and slidably inserted with a pin 234, one end of the pin 234 is fixedly connected with the second wedge block 232, the side of the first partition plate 190 is provided with a slot 235, the slot 235 is used in cooperation with the pin 234, and the other end of the pin 234 is inserted into the slot 235.

[0042] ​By the technical scheme, the atmospheric pollution treatment equipment for processing the flame-retardant polyethylene cable material provided by the present application can diffuse VOCs waste gas more evenly in the combustion chamber 100 when in use. The VOCs waste gas after one combustion enters the branch pipe 160 through the air inlet pipe 110 and the air cavity 162, and is uniformly sprayed into the combustion chamber 100 through the air injection nozzle 161. The waste gas moves along the spiral moving route of the first spiral combustion bed 130 and the second spiral combustion bed 140 in the combustion chamber 100. At the same time, the first motor 153 drives the second gear 154 to rotate, and drives the first central shaft 150 to rotate through the meshing of the second gear 154 and the first gear 152, so that the first central shaft 150 drives the first spiral combustion bed 130 and the branch pipe 160 to rotate slowly, so that the VOCs waste gas is diffused more evenly in the combustion chamber 100. The VOCs waste gas diffuses backward through the micropores 210 on the first partition plate 190. In this process, the molecules that are not easy to decompose in the VOCs waste gas are adsorbed and intercepted by the microgrooves 180 and the micropores 210. When the combustion just starts, the additional oxygen is sprayed onto the first spiral combustion bed 130 through the oxygen supplement pipe 177 and the oxygen supplement injection head 170, so that the molecules that are not easy to decompose are more fully burned and decomposed. Subsequently, the second motor 179 drives the third gear 1791 to rotate, and drives the rack 178 to rotate through the meshing of the third gear 1791 and the rack 178, and combines the sliding rod 176 with the connecting disc 174 and the connecting rod 175 to drive the sliding block 172 and the flow guide piece 171 to deflect and approach the surface of the first central shaft 150. Figure 8 When the sliding block 172 slides in the sliding groove 173, it is limited by the sliding groove 173, so that the sliding block 172 rotates, so that the sliding block 172 drives the flow guide piece 171 to retract into the first central shaft 150 while driving the flow guide piece 171 to turn inward and close, covering and closing the oxygen supplement injection head 170, so that the oxygen supplement can be stopped, avoiding the inflow of the VOCs waste gas in the combustion chamber 100 into the oxygen supplement pipe 177. In the process of turning inward and closing of the flow guide piece 171, the oxygen sprayed by the oxygen supplement injection head 170 is guided to sweep the first spiral combustion bed 130 from outside to inside, improving the uniformity of the oxygen supplement. At the initial stage of combustion, the rotation of the opening and closing plate 220 is locked by the plug 234 inserted into the slot 235, so that the opening and closing plate 220 cannot be turned over, which limits and delays the backward diffusion of VOCs exhaust gas, thereby ensuring that the VOCs exhaust gas concentration and oxygen concentration at the end of the combustion chamber 100 are high at the initial stage of combustion, so that the VOCs exhaust gas is quickly and fully combusted, the push rod 231 is pressed down by the closed guide vane 171, and the plug 234 is pulled out of the slot 235 by the cooperation of the first wedge block 230 and the second wedge block 232, thereby releasing the locking effect of the opening and closing plate 220. If the VOCs exhaust gas amount on the front side of the first partition plate 190 is too large, the air pressure is too high, the opening and closing plate 220 can be pushed and turned over, so that the VOCs exhaust gas diffuses backward through the channel between the opening and closing plate 220 and the first partition plate 190; Furthermore, the VOCs exhaust gas diffused to the back side is pushed forward again by the rotation of the first spiral combustion bed 130, thereby prolonging the combustion and decomposition time of the VOCs exhaust gas in the combustion chamber 100 as much as possible, so that the VOCs exhaust gas is decomposed more completely. The VOCs exhaust gas passing through the first spiral combustion bed 130 is further trapped and decomposed by the second spiral combustion bed 140 and the second partition plate 200, so as to avoid the situation that a small amount of VOCs exhaust gas directly flows through the combustion chamber 100 through the gap between the first spiral combustion bed 130 and the inner wall of the combustion chamber 100. Finally, the VOCs exhaust gas is fully combusted and decomposed into carbon dioxide and water vapor, which is discharged through the exhaust pipe 120. In summary, the combustion time of the VOCs exhaust gas is prolonged, the VOCs exhaust gas is more fully combusted and decomposed, the content of VOCs exhaust gas molecules discharged into the atmosphere together with carbon dioxide and water vapor is reduced as much as possible, the exhaust gas treatment effect is improved, and air pollution is reduced.

[0043] It should be noted that in the existing VOC strong combustion equipment, the auxiliary combustion bed of the micro-porous ceramic tile isolation wall in the secondary combustion chamber is not naturally provided with a micro-porous wall structure, but is formed by processing and manufacturing a specific pore structure from refractory materials. The auxiliary combustion bed is usually made of refractory materials such as acid-resistant ceramic particle aggregates, corundum sand, silicon carbide, quartz sand, or high-alumina refractory materials. These materials have high temperature resistance and can withstand high temperatures of 1300-1700℃, and also have corrosion resistance and high mechanical strength, which can adapt to the high temperature environment of the combustion chamber. In the processing process, foaming agents or combustible particles are added as pore-forming agents, and the pore-forming agents are decomposed by high-temperature sintering to form uniformly distributed micro-pores in the material. In addition, the addition of rare earth corrosion inhibitors can enhance the chemical corrosion resistance of the material and prolong the service life. The processed auxiliary combustion bed presents a porous structure, and the porosity is usually between 30%-45%, and the pore size can be controlled, such as 10 microns. The pore size can filter 1 micron liquid particles. This structure realizes the adsorption of suspended matter, colloid and other substances through inertial collision, diffusion and interception effect, and at the same time provides a continuous combustion surface for VOCs. The auxiliary combustion bed has been widely used in VOCs treatment. The micro-porous structure of the auxiliary combustion bed reduces the combustion temperature through the synergistic effect of physical adsorption and chemical combustion, so that the ignition temperature can be as low as 200-300 DEG C, reducing energy consumption. At the same time, the material can be regenerated, the service life is long, and the operation cost is reduced.

[0044] Before or when the VOCs exhaust gas is introduced into the secondary combustion chamber, the VOCs exhaust gas is mixed with an appropriate amount of oxygen to assist the further combustion of the VOCs exhaust gas. The appropriate additional oxygen in the initial stage of combustion can further reduce the temperature required for the combustion of the VOCs exhaust gas, so that the combustion reaction speed of the VOCs exhaust gas is faster, thereby further improving the decomposition effect of the VOCs exhaust gas in the initial stage of combustion. However, if the oxygen content is continuously maintained at a high level, nitrogen oxides with pollution will be formed. Therefore, only the oxygen content needs to be appropriately increased in the initial stage of combustion.

[0045] The shaft 221, torsional spring 222 and spring 233 used in the combustion chamber 100 are made of nickel-based high-temperature alloy. The nickel-based high-temperature alloy is based on nickel, and is reinforced by adding elements such as chromium, cobalt, molybdenum and tungsten. It has excellent high-temperature strength, oxidation resistance and thermal corrosion resistance, and is widely used as a high-temperature component material.

[0046] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0047] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0048] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. An air pollution treatment device for flame-retardant polyethylene cable material processing, comprising a combustion chamber (100) and an air inlet pipe (110) and an exhaust pipe (120) respectively connected to both ends of the combustion chamber (100), characterized in that: A first spiral combustion bed (130) is rotatably arranged inside the combustion chamber (100), and a second spiral combustion bed (140) is installed inside the combustion chamber (100). A first central shaft (150) is connected to the middle of the first spiral combustion bed (130), and a branch pipe (160) is connected to the side of the first central shaft (150). The branch pipe (160) is connected to the air intake pipe (110). An oxygen supplement nozzle (170) is provided on the side of the first central shaft (150). Microgrooves (180) are provided on the sides of both the first spiral combustion bed (130) and the second spiral combustion bed (140). A first partition (190) is connected to the side of the first spiral combustion bed (130), and a second partition (200) is connected to the side of the second spiral combustion bed (140). Micropores (210) are provided on the sides of both the first partition (190) and the second partition (200).

2. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 1, characterized in that: The length of the first spiral combustion bed (130) is greater than the length of the second spiral combustion bed (140). The second spiral combustion bed (140) is connected to a second central shaft (151) in the middle. The second spiral combustion bed (140) is connected to the inner wall of the combustion chamber (100). One end of the first central shaft (150) is rotatably disposed in the side wall of the combustion chamber (100), and the other end of the first central shaft (150) is rotatably disposed at the end of the second central shaft (151).

3. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 2, characterized in that: The end of the first central shaft (150) is rotatably inserted into one end of the combustion chamber (100). The end of the first central shaft (150) is fitted with a first gear (152). A first motor (153) is installed on the outside of the combustion chamber (100). A second gear (154) is installed on the output shaft of the first motor (153). The second gear (154) meshes with the first gear (152). The end of the first central shaft (150) is rotatably connected to the intake pipe (110). A sealing connector (155) is provided at the rotatable connection between the end of the first central shaft (150) and the intake pipe (110).

4. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 1, characterized in that: The number of branch pipes (160) is set to several, and the several branch pipes (160) are evenly arranged in the circumferential direction in the combustion chamber (100). Each branch pipe (160) is provided with a jet nozzle (161) on its side. An air chamber (162) is opened at the end of the first central shaft (150). The air intake pipe (110) is connected to one end of the air chamber (162), and the other end of the air chamber (162) is connected to the branch pipe (160).

5. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 4, characterized in that: The number of oxygen supplement nozzles (170) is set to several, and the several oxygen supplement nozzles (170) are spirally wrapped around the inner side of the first central axis (150), and the oxygen supplement nozzles (170) are all inclined towards the surface of the first spiral combustion bed (130).

6. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 5, characterized in that: A guide vane (171) is movably disposed on the side of the first central shaft (150). The number of guide vanes (171) is the same as the number of oxygen supplement nozzles (170), and the guide vanes (171) are disposed on the outside of the corresponding oxygen supplement nozzles (170). A slider (172) is connected to the end of each guide vane (171). A groove (173) is opened on the inner side of the first central shaft (150) to cooperate with the slider (172). The slider (172) is slidably disposed in the groove (173). A connecting plate (174) is disposed in the air chamber (162). A connecting rod (175) is installed on the outside of the connecting plate (174). The number of connecting rods (175) is the same as the number of sliders (172). The end of each connecting rod (175) is rotatably connected to the corresponding slider (172). A slide rod (176) is provided in both the air chamber (162) and the air inlet pipe (110). The connecting plate (174) is rotatably connected to the end of the slide rod (176). An oxygen supply pipe (177) is slidably inserted into the middle of the slide rod (176) and the connecting plate (174). One end of the oxygen supply pipe (177) is inserted into the side wall of the air inlet pipe (110), and the other end of the oxygen supply pipe (177) is connected to the oxygen supply nozzle (170).

7. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 6, characterized in that: A rack (178) is installed on the outside of the slide bar (176), and a second motor (179) is installed on the outside of the air intake pipe (110). The output shaft of the second motor (179) is rotatably inserted into the side wall of the air intake pipe (110). A third gear (1791) is installed at the end of the output shaft of the second motor (179), and the third gear (1791) meshes with the rack (178).

8. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 6, characterized in that: The first partition (190) has a hinged plate (220) rotatably disposed in the middle, and the hinged plate (220) also has micro-holes (210) on its side. A rotating shaft (221) is installed on the outside of the hinged plate (220). The rotating shaft (221) is rotatably inserted into the inside of the first partition (190). A torsion spring (222) is sleeved on the outside of the rotating shaft (221). The two ends of the torsion spring (222) are respectively connected to the hinged plate (220) and the inner wall of the first partition (190).

9. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 8, characterized in that: A first wedge block (230) is slidably disposed on the inner side of the first central shaft (150), and a push rod (231) is installed on the outer side of the first wedge block (230). The push rod (231) is slidably inserted into the side of the first central shaft (150). One of the guide vanes (171) intermittently abuts against the push rod (231). A second wedge block (232) is also slidably disposed on the inner side of the first central shaft (150). The second wedge block (232) is used in conjunction with the first wedge block (230). A spring (233) is installed on the outer side of the second wedge block (232). The two ends of the spring (233) are respectively connected to the second wedge block (232) and the inner wall of the first central shaft (150).

10. The air pollution treatment equipment for processing flame-retardant polyethylene cable material according to claim 9, characterized in that: A pin (234) is inserted between the first central shaft (150) and the first partition (190). One end of the pin (234) is connected to the second wedge block (232). A slot (235) is opened on the side of the first partition (190). The slot (235) is used in conjunction with the pin (234). The other end of the pin (234) is inserted into the slot (235).

Images