A pollution-free exhaust gas treatment and purification device for nitrocellulose and a purification method thereof

Abstract

The application discloses a kind of nitrocellulose waste gas pollution-free emission treatment purification equipment and its purification method, belong to waste gas treatment technical field, by filter hole will be filtered to waste gas, dust particles will be blocked by filter hole, water will be sprayed to filter cartridge from several nozzles and contact with waste gas, volatile organic compounds in waste gas are removed by water absorption, the water sprayed will directly impact on filter cartridge outside, realize the purpose of backflushing to filter hole, will be removed from filter hole Particle impurities and viscous material, cooperate filter cartridge continuous rotation, so that water will be cleaned to filter cartridge and filter hole, realize the purpose of automatic filter hole cleaning, impurities are removed from filter hole will be discharged from discharge pipe, open the discharge valve outside treatment box can discharge mixed material and wastewater, under the condition that the equipment does not stop, clean treatment box, thus improve the service life of the equipment, it is favorable to the efficient and stable purification treatment of waste gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a pollution-free emission treatment and purification equipment for nitrocellulose waste gas and a purification method thereof. BACKGROUND

[0002] In the production process of nitrocellulose, various waste gases containing nitrogen oxides and other pollutants are generated, and the emission of these waste gases has serious harm to the environment and human health. The commonly used treatment technologies for the waste gas generated in the production process of nitrocellulose include water absorption method, activated carbon adsorption method, catalytic oxidation method, etc.

[0003] In the adsorption process using activated carbon, the activated carbon inside the equipment is in a static state, and the adsorbate molecules only rely on their own thermal motion to contact and be adsorbed on the surface of the activated carbon without the aid of external force, so that the adsorption speed of the adsorbate molecules on the adsorption sites on the surface of the activated carbon is slow. Moreover, the static activated carbon cannot fully utilize the adsorption capacity in the adsorption process. In addition, in the waste gas treatment process, the paint dust particles in the waste gas will gradually adhere to the filter screen during the emission process. With the passage of time, the paint dust layer will gradually thicken, causing the pores of the filter screen to be blocked, thereby affecting the passage of the gas. The organic compounds in the waste gas may be adsorbed and polymerized on the filter screen to form sticky substances, further exacerbating the blockage of the filter screen, which requires normal shutdown treatment, thus causing the periodic shortening of the service life of the equipment and being not conducive to the efficient and stable purification treatment of the waste gas. SUMMARY

[0004] The present application aims to provide a pollution-free emission treatment and purification equipment for nitrocellulose waste gas and a purification method thereof, to solve the problem that the static activated carbon in the adsorption process cannot fully utilize the adsorption capacity, and the paint dust particles in the waste gas will gradually adhere to the filter screen during the emission process, causing the pores of the filter screen to be blocked, which requires normal shutdown treatment, thus causing the periodic shortening of the service life of the equipment.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a kind of nitrocellulose waste gas pollution-free emission treatment purification equipment, including processing box, the bottom of the processing box is connected with air intake component, the outer fixed support frame of air intake component is fixed in the lower of processing box, the top of air intake component is connected with isolation component, and the isolation component is fixedly installed in processing box interior, the top of the four corners of processing box is communicated with connecting pipe respectively, the top of four connecting pipes is communicated with purification box, and the bottom of the purification box is fixed on processing box, one side of the processing box is fixedly connected with drive component, and the both ends of drive component are respectively extended to the inside of processing box and purification box, the bottom of the inside of purification box is provided with flow guide cavity, the top of the inner wall of flow guide cavity is provided with a plurality of shunt holes, and the inside of purification box is communicated, the top of the inside of purification box is equipped with filter core, the top of filter core is equipped with cover plate, and the cover plate is clamped in the top of purification box, the middle part of cover plate is installed with discharge pipe, and the bottom of discharge pipe is communicated with the inside of purification box, one side of the processing box is fixed with liquid guide component, the inside of the side wall of processing box is provided with cavity, and the end of liquid guide component is communicated with cavity, and the inner wall of cavity is installed with a plurality of nozzles, and a plurality of nozzles are towards the middle part in processing box.

[0007] As a further scheme of the utility model, the air intake component includes an air inlet pipe, which is installed through the bottom of the processing box, the top of the air inlet pipe is sleeved with a shaft sleeve, the shaft sleeve is clamped at the bottom of the isolation component, and the air inlet pipe is clamped at the middle part of the support frame.

[0008] As a further scheme of the utility model, the isolation component includes a bearing seat, which is clamped below the processing box, a rotating disc is rotatably connected in the bearing seat, a filter cartridge is fixedly connected on the rotating disc, a plurality of filter holes are formed on the outer wall of the filter cartridge, a limiting sleeve is sleeved at the top of the filter cartridge, and the limiting sleeve is fixed on the top of the inner wall of the processing box.

[0009] As a further scheme of the utility model, the bottom of the inner wall of the filter cartridge is fixedly connected with an isolation cylinder, the top of the air inlet pipe is communicated with the inside of the isolation cylinder, the height of the isolation cylinder is lower than that of the filter cartridge, a flow guide cover is arranged above the isolation cylinder, and the flow guide cover is designed in an inverted conical shape, the flow guide cover is fixed on the top of the inner wall of the filter cartridge, a discharge pipe is arranged between the isolation cylinder and the inner wall of the filter cartridge, the discharge pipe is installed through the rotating disc, a drain hole is formed on both sides of the rotating disc, a discharge valve is arranged below the outer wall of the processing box, and the discharge valve is communicated with the inside of the processing box.

[0010] As a further scheme of the present application, the driving assembly comprises a motor fixed on the processing box, a driving gear fixed on an output shaft of the motor, a driven gear externally meshed with the driving gear, a fixed shaft fixed at a middle portion of the driven gear, the fixed shaft connected to the bottom of the purification box through a rotating sleeve, a connecting rod fixed at a bottom end of the fixed shaft, and the outer wall of the connecting rod fixed to the inner wall of the isolation cylinder through a plurality of supporting rods.

[0011] As a further scheme of the present application, the outer wall of the fixed shaft is fixed with a spiral blade, the spiral blade is arranged in the purification box and located above the shunt hole, the bottom of the inner wall of the purification box is designed in an inverted conical shape, a plurality of heat dissipation holes are arranged at the lower portion of the outer wall of the purification box, and three stirring rods are fixed at the top end of the fixed shaft and penetrate through the bottom of the purification box.

[0012] As a further scheme of the present application, the liquid guiding assembly comprises a water pump fixed on one side of the processing box, a water suction pipe connected to the water inlet end of the water pump, and a water guiding pipe connected to the water outlet end of the water pump, the top end of the water guiding pipe is clamped on one side of the processing box and communicates with the cavity.

[0013] A purification method of a pollution-free exhaust gas emission treatment and purification equipment for nitrocellulose, the purification method comprising the following steps:

[0014] When the exhaust gas generated in the production process of nitrocellulose is treated, the inlet pipe is connected to the exhaust gas emission source, the exhaust gas enters the isolation cylinder through the inlet pipe, the one-way valve additionally arranged outside the inlet pipe prevents the backflow of the gas in the processing box, the inverted conical design of the flow guide cover achieves the purpose of guiding the exhaust gas when the exhaust gas contacts the flow guide cover at the top, and the height of the isolation cylinder is lower than the height of the filter cylinder, so that the exhaust gas enters between the inner wall of the isolation cylinder and the filter cylinder from the top of the isolation cylinder, the filter hole outside the filter cylinder filters the exhaust gas, the dust particles are blocked by the filter hole, and the filtered exhaust gas is discharged from the filter hole, so that the exhaust gas is guided into the inner wall between the processing box and the filter cylinder.

[0015] The motor and the water pump are controlled at the same time, the water pump at the bottom of the water pump draws water from the water source, and the water enters the cavity in the side wall of the treatment box through the water pump and the water guide pipe, and after the cavity is filled with water, the pressure increases, so that the water is sprayed from the nozzles to the filter cartridge and contacts the exhaust gas, and the solubility of the exhaust gas in water is used to remove volatile organic compounds in the exhaust gas by water absorption, and the output shaft of the motor drives the driving gear to rotate, the driving gear drives the fixed shaft to rotate through the driven gear, the fixed shaft rotates through the connecting rod, the connecting rod drives the isolation cylinder to rotate through the support rod, and the isolation cylinder drives the filter cartridge and the bottom rotating disc to rotate, the rotating disc is supported and limited by the bearing seat, thereby improving the stability of the rotation of the filter cartridge and the isolation cylinder, and as the filter cartridge continues to rotate, the exhaust gas discharged from the filter hole fully contacts the water sprayed from the nozzle, further improving the effect of water adsorbing volatile organic compounds in the exhaust gas, and the wastewater adsorbing volatile organic compounds falls into the bottom of the treatment box from the water drain holes on both sides of the rotating disc, so that the wastewater does not accumulate above the rotating disc.

[0016] The position of the nozzle is towards the filter cartridge, so that the sprayed water directly impacts the outside of the filter cartridge, achieving the purpose of backflushing the filter hole, and the particles and sticky substances in the filter hole are flushed out, and the filter cartridge continues to rotate, so that the sprayed water can clean the filter cartridge and the filter hole in all directions, achieving the purpose of automatically cleaning the filter hole, the isolation cylinder is located inside the filter cartridge, and the sprayed water cannot enter the air inlet pipe through the isolation cylinder, achieving the purpose of isolating the water, preventing water accumulation in the water inlet pipe, and the mixed substances of particles and sticky substances are flushed out of the filter hole and fall between the inner wall of the isolation cylinder and the filter cartridge, and finally are discharged from the discharge pipe at the bottom of the filter cartridge, that is, the wastewater and the mixed substances are located at the bottom of the treatment box, and when collecting and treating the mixed substances and the wastewater, the discharge valve outside the treatment box is opened to discharge, and the treatment box is cleaned without stopping the equipment.

[0017] After the waste gas undergoes water adsorption, it is introduced into the guide chamber within the purification chamber through multiple connecting pipes. The waste gas then enters the purification chamber through multiple diversion holes within the guide chamber. The purification chamber is filled with activated carbon granules, which utilize their adsorption properties to re-adsorb harmful substances from the waste gas. The diversion holes further divert the waste gas, increasing the contact area between the activated carbon and the waste gas, thus improving the adsorption effect. Additionally, the fixed shaft drives the spiral blades to rotate, causing the bottom layer of activated carbon to rise. This, combined with the fixed shaft's operation of multiple stirring... The rod rotates, and the bottom of the purification chamber has an inverted conical design, which allows the activated carbon at the edge of the chamber to flow to the lowest point. This, combined with the spiral blades, continuously pushes the activated carbon upward, increasing its fluidity within the chamber and ensuring that the adsorption capacity of all activated carbon is fully utilized. Next, the exhaust gas continues to flow upward and passes through the filter element, which further purifies the exhaust gas before finally discharging it from the exhaust pipe at the top. The filter element can be easily replaced by opening the cover. After removing the filter element, the bottom activated carbon is exposed, making it easy to replace as well.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention involves waste gas entering from the top of the isolation cylinder between the isolation cylinder and the inner wall of the filter cylinder. The filter holes on the outside of the filter cylinder filter the waste gas, blocking dust particles. The filtered waste gas then exits through the filter holes, guiding it between the treatment box and the inner wall of the filter cylinder. Water is sprayed from several nozzles onto the filter cylinder and comes into contact with the waste gas. Utilizing the solubility of waste gas in water, volatile organic compounds (VOCs) in the waste gas are removed through water absorption. As the filter cylinder continues to rotate, the waste gas exiting through the filter holes comes into full contact with the water sprayed from the nozzles, further enhancing the water's adsorption effect on VOCs. The wastewater that has adsorbed VOCs falls from the drain holes on both sides of the turntable into the bottom of the treatment box, allowing the wastewater to drain away. The water will not accumulate above the turntable. The nozzles spray water towards the filter cartridge, allowing the water to directly impact the outside of the cartridge, achieving a backflushing effect on the filter holes. This flushes out particulate impurities and sticky substances from the filter holes. Combined with the continuous rotation of the filter cartridge, the sprayed water cleans the cartridge and filter holes from all angles, achieving automated unclogging of the filter holes. The mixture of particulate impurities and sticky substances, after being flushed out of the filter holes, falls between the isolation cylinder and the inner wall of the filter cartridge, and is finally discharged from the discharge pipe at the bottom of the filter cartridge. Opening the discharge valve outside the treatment tank allows for the discharge of the mixture and wastewater. The treatment tank can be cleaned without shutting down the equipment, thus extending its service life and facilitating efficient and stable purification of waste gas.

[0020] 2、The present application passes waste gas into the flow guide cavity in the purification tank through multiple connecting pipes, the waste gas enters the inside of the purification tank from multiple shunt holes in the flow guide cavity, and the purification tank is filled with activated carbon particles, harmful substances in the waste gas are adsorbed again by using the adsorption performance of activated carbon, the waste gas is shunted through the shunt holes, thereby the contact area of activated carbon and waste gas is increased, and the adsorption effect is improved, the fixed shaft drives the spiral blade to rotate, the spiral blade turns the activated carbon at the bottom up in the rotating process, the fixed shaft drives multiple stirring rods to rotate, the bottom of the inner wall of the purification tank is designed as an inverted cone, so that the activated carbon at the edge of the purification tank flows to the lowest position, the spiral blade continuously pushes the activated carbon upwards, the mobility of the activated carbon in the purification tank is increased, and the adsorption capacity of all activated carbon is fully utilized, and then the waste gas continues to flow upwards and passes through the filter element, the filter element filters the waste gas again, and the effect of waste gas purification treatment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present application.

[0023] Figure 2 It is a partial sectional structural schematic diagram of the present application.

[0024] Figure 3 It is a structural schematic diagram of the air inlet assembly of the present application.

[0025] Figure 4 It is a structural schematic diagram of the isolation assembly of the present application.

[0026] Figure 5 It is a structural schematic diagram of the connection between the purification tank and the driving assembly of the present application.

[0027] Figure 6 It is a structural schematic diagram of the driving assembly of the present application.

[0028] Figure 7 It is a sectional structural schematic diagram of the purification tank of the present application.

[0029] Figure 8 It is a sectional structural schematic diagram of the purification tank of the present application.

[0030] In the drawings, the components represented by each number are listed as follows:

[0031] 1, processing box; 2, air inlet assembly; 2001, air inlet pipe; 2002, shaft sleeve; 2003, one-way valve; 3, support frame; 4, isolation assembly; 401, bearing seat; 402, rotating disc; 403, filter cartridge; 404, limiting sleeve; 405, isolation cylinder; 406, flow guide cover; 407, filter hole; 408, discharge pipe; 5, connecting pipe; 6, purification box; 7, driving assembly; 701, motor; 702, driving gear; 703, driven gear; 704, connecting rod; 705, fixed shaft; 706, helical blade; 707, stirring rod; 8, heat dissipation hole; 9, flow guide cavity; 10, flow distribution hole; 11, filter element; 12, cover plate; 13, discharge pipe; 14, liquid guide assembly; 141, water pump; 142, water guide pipe; 143, water suction pipe; 15, cavity; 16, nozzle; 17, discharge valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-8 The present application provides a technical solution:

[0034] A pollution-free exhaust gas emission treatment and purification equipment for nitrocellulose, comprising a processing box 1, the bottom of the processing box 1 is connected with an air inlet assembly 2, the air inlet assembly 2 is fixedly provided with a support frame 3, and the support frame 3 is fixed below the inner wall of the processing box 1. The air inlet assembly 2 comprises an air inlet pipe 2001, the air inlet pipe 2001 is installed through the bottom of the processing box 1, the top end of the air inlet pipe 2001 is sleeved with a shaft sleeve 2002, the air inlet pipe 2001 is clamped in the middle of the support frame 3, and a one-way valve 2003 is installed on the outer wall of the air inlet pipe 2001 and located close to the bottom of the processing box 1; the exhaust gas enters through the air inlet pipe 2001, and the one-way valve 2003 additionally arranged outside the air inlet pipe 2001 prevents the gas in the processing box 1 from flowing back.

[0035] As a further scheme of the present application, the top end of the air inlet assembly 2 is connected with an isolation assembly 4, the isolation assembly 4 is fixedly installed inside the processing box 1, the isolation assembly 4 comprises a bearing seat 401, the bearing seat 401 is clamped below the processing box 1, a rotating disc 402 is rotatably connected in the bearing seat 401, the shaft sleeve 2002 is clamped in the rotating disc 402, a filter cartridge 403 is fixedly connected to the rotating disc 402, a plurality of filter holes 407 are formed in the outer wall of the filter cartridge 403, a limiting sleeve 404 is sleeved with the top of the filter cartridge 403, and the limiting sleeve 404 is fixed to the top of the inner wall of the processing box 1.

[0036] In work, the filter cartridge 403 drives the rotating disc 402 to rotate in the bearing seat 401, the bearing seat 401 supports and limits the rotating disc 402, the top of the filter cartridge 403 is limited by the limiting sleeve 404, and then the stability of the rotation of the filter cartridge 403 is improved; the filter hole 407 outside the filter cartridge 403 filters the exhaust gas, dust particles are blocked by the filter hole 407, and the filtered exhaust gas is discharged from the filter hole 407.

[0037] As a further scheme of the application, the bottom of the inner wall of the filter cartridge 403 is fixedly connected with the isolation cylinder 405, the top end of the air inlet pipe 2001 communicates with the inside of the isolation cylinder 405; the height of the isolation cylinder 405 is lower than that of the filter cartridge 403, and the upper portion of the isolation cylinder 405 is provided with the flow guide cover 406, which is designed in an inverted conical shape, the flow guide cover 406 is fixed to the top of the inner wall of the filter cartridge 403, the isolation cylinder 405 and the inner wall of the filter cartridge 403 are provided with the discharge pipe 408, the discharge pipe 408 penetrates through the rotating disc 402, the two sides of the rotating disc 402 are respectively provided with the drain hole, the lower portion of the outer wall of the treatment box 1 is provided with the discharge valve 17, and the discharge valve 17 communicates with the inside of the treatment box 1.

[0038] The treatment box 1 is fixedly provided with the liquid guide assembly 14, the cavity 15 is formed in the side wall of the treatment box 1, the cavity 15 communicates with the end portion of the liquid guide assembly 14, a plurality of nozzles 16 are penetratingly installed on the inner wall of the cavity 15, and the plurality of nozzles 16 are directed to the middle portion in the treatment box 1. When the cavity 15 is filled with water, the pressure increases, so that the water is sprayed from the plurality of nozzles 16 to the filter cartridge 403 and contacts the exhaust gas, and the volatile organic compounds in the exhaust gas are removed by the water absorption through the solubility of the exhaust gas in water.

[0039] In work, the isolation cylinder 405 is located in the inside of the filter cartridge 403, the sprayed water cannot enter the air inlet pipe 2001 through the isolation cylinder 405, the water is isolated, and the water accumulation in the water inlet pipe is prevented. When the exhaust gas contacts the flow guide cover 406 at the top, the flow guide cover 406 with the inverted conical design achieves the purpose of guiding the exhaust gas, and the height of the isolation cylinder 405 is lower than that of the filter cartridge 403, so that the exhaust gas enters between the isolation cylinder 405 and the inner wall of the filter cartridge 403 from the top of the isolation cylinder 405, and the effect of guiding the exhaust gas is improved.

[0040] The wastewater and the mixed matters are located at the bottom in the treatment box 1, when the mixed matters and the wastewater are collected and treated, the discharge valve 17 outside the treatment box 1 is opened to discharge, and the treatment box 1 is cleaned without stopping the equipment.

[0041] As a further scheme of the present application, the four corners between the top of the treatment box 1 and the filter cartridge 403 are respectively communicated with the connecting pipes 5, the top ends of the four connecting pipes 5 are communicated with the purification box 6, the bottom of the purification box 6 is fixed on the treatment box 1; one side of the treatment box 1 is fixedly connected with the driving assembly 7, the driving assembly 7 comprises a motor 701, the motor 701 is fixed on the treatment box 1, a driving gear 702 is fixed on the output shaft of the motor 701, a driven gear 703 is engaged with the outside of the driving gear 702, a fixed shaft 705 is fixed in the middle of the driven gear 703, the fixed shaft 705 is connected with the bottom of the purification box 6 through a rotating sleeve, a connecting rod 704 is fixed at the bottom end of the fixed shaft 705, the outer wall of the connecting rod 704 is fixed with the inner wall of the isolation cylinder 405 through a plurality of supporting rods;

[0042] When working, the driving gear 702 drives the fixed shaft 705 to rotate through the driven gear 703, the fixed shaft 705 rotates through the connecting rod 704, and the connecting rod 704 drives the isolation cylinder 405 to rotate through the supporting rods, which facilitates the rotation of the filter cartridge 403 and the rotating disc 402 at the bottom.

[0043] As a further scheme of the present application, the bottom of the inner wall of the purification box 6 is designed as an inverted cone, a flow guide cavity 9 is formed in the bottom of the purification box 6, the top end of the connecting pipe 5 is communicated with the flow guide cavity 9, a plurality of shunt holes 10 are formed in the top of the flow guide cavity 9, and the shunt holes 10 are communicated with the inside of the purification box 6; a filter core 11 is arranged above the inside of the purification box 6, a cover plate 12 is arranged above the filter core 11, the cover plate 12 is clamped on the top of the purification box 6, a discharge pipe 13 is arranged to penetrate the middle of the cover plate 12, and the bottom end of the discharge pipe 13 is communicated with the inside of the purification box 6.

[0044] A spiral blade 706 is fixed on the outer wall of the fixed shaft 705, the spiral blade 706 is arranged in the purification box 6 and above the shunt holes 10, a plurality of heat dissipation holes 8 are formed in the lower part of the outer wall of the purification box 6, and three stirring rods 707 are arranged to penetrate the bottom of the purification box 6 at the top end of the fixed shaft 705.

[0045] When working, the gas enters the inside of the purification box 6 from the plurality of shunt holes 10 in the flow guide cavity 9, and the inside of the purification box 6 is filled with activated carbon particles, the harmful substances in the waste gas are adsorbed again by using the adsorption performance of the activated carbon, the waste gas is shunted through the shunt holes 10, thereby increasing the contact area of the activated carbon and the waste gas and improving the adsorption effect.

[0046] The spiral blade 706 rotates to overturn the underlying activated carbon, and the fixed shaft 705 drives the plurality of stirring rods 707 to rotate, the bottom of the inner wall of the purification box 6 is designed in an inverted conical shape, so that the activated carbon at the inner edge of the purification box 6 flows to the lowest position, and the spiral blade 706 continuously pushes the activated carbon upward, thereby increasing the flowability of the activated carbon in the purification box 6 and ensuring that the adsorption capacity of all activated carbon is fully utilized.

[0047] As a further scheme of the present application, the liquid guide assembly 14 comprises a water pump 141 fixed on one side of the treatment box 1, the water pump 141 is connected with a water suction pipe 143 at the water inlet end, and the water pump 141 is connected with a water guide pipe 142 at the water outlet end, the top end of the water guide pipe 142 is clamped on one side of the treatment box 1 and communicates with the cavity 15.

[0048] In operation, the water suction pipe 143 at the bottom of the water pump 141 sucks water from the water source, so that the water enters the cavity 15 in the side wall of the treatment box 1 through the water pump 141 and the water guide pipe 142, the cavity 15 is designed in a ring shape, so that it is convenient to guide the water into the plurality of nozzles 16 simultaneously, thereby improving the uniformity of water spraying of the nozzles 16.

[0049] A purification method of a nitrocellulose waste gas pollution-free emission treatment and purification equipment, the purification method comprising the following steps:

[0050] When the waste gas generated in the production process of nitrocellulose is treated, the inlet pipe 2001 is connected to the waste gas emission source, the waste gas enters the isolation cylinder 405 through the inlet pipe 2001, and the one-way valve 2003 additionally arranged outside the inlet pipe 2001 prevents the backflow of the gas in the treatment box 1, when the waste gas contacts the top guide cover 406, the guide cover 406 designed in an inverted conical shape achieves the purpose of guiding the waste gas, and the height of the isolation cylinder 405 is lower than the height of the filter cylinder 403, so that the waste gas enters between the inner wall of the isolation cylinder 405 and the filter cylinder 403 from the top of the isolation cylinder 405, the filter hole 407 outside the filter cylinder 403 filters the waste gas, the dust particles are blocked by the filter hole 407, and the filtered waste gas is discharged from the filter hole 407, so that the waste gas is guided into the inner wall between the treatment box 1 and the filter cylinder 403.

[0051] Simultaneously control motor 701 and water pump 141 work, water pump 141 bottom suction pipe 143 from the water source, so that water through the water pump 141 and water pipe 142 into the cavity 15 in the side wall of the processing box 1, the cavity 15 filled with water after the pressure increases, so that water will be from several nozzles 16 spray towards the filter cartridge 403 and with the exhaust gas contact, using the solubility of the exhaust gas in water, by water absorption method will be volatile organic compounds in exhaust gas removal, second motor 701 output shaft driven gear 702 rotation, driving gear 702 through the driven gear 703 drive fixed shaft 705 rotation, fixed shaft 705 through the connecting rod 704 rotation, connecting rod 704 is driven by the strut cylinder 405 rotation, cylinder 405 is driven by the filter cartridge 403 and the bottom of the turntable 402 rotation, through the bearing seat 401 to support the turntable 402 limiting, and then improve the stability of the filter cartridge 403 and the cylinder 405 rotation, with the filter cartridge 403 continues to rotate, the filter hole 407 in the exhaust gas is fully contacted with the nozzle 16 spray water, further improve the effect of water adsorption of volatile organic compounds in exhaust gas, adsorption of volatile organic compounds wastewater from the turntable 402 on both sides of the drain hole into the bottom of the processing box 1, so that the wastewater will not accumulate on the turntable 402 above;

[0052] The position of the nozzle 16 spray towards the filter cartridge 403, so that the water will be directly sprayed on the filter cartridge 403 outside, realize the purpose of back flushing of filter hole 407, will be filter hole 407 in the particulate impurities and sticky material out, with the filter cartridge 403 continues to rotate, so that the water will be all-round cleaning of filter cartridge 403 and filter hole 407, realize the purpose of automatic filter hole 407 clear block, cylinder 405 is located inside the filter cartridge 403, the water will not be through the isolation cylinder 405 into the air pipe 2001, play a role in isolation of water, prevent the water pipe to accumulate water, particulate impurities and sticky material mixture will be washed out of the filter hole 407 after falling between the filter cartridge 403 and the inner wall of the filter cartridge 403, eventually from the filter cartridge 403 bottom of the exhaust pipe 408 discharge, i.e. wastewater and mixed material are located in the bottom of the processing box 1, in the collection and processing of mixed material and wastewater, open the discharge valve 17 outside the processing box 1 can be discharged, in the case of the equipment does not stop cleaning the processing box 1;

[0053] After the water adsorption process of the exhaust gas, the exhaust gas is introduced into the flow guide cavity 9 in the purification tank 6 through the multiple connecting pipes 5, the exhaust gas enters the inside of the purification tank 6 from the multiple shunt holes 10 in the flow guide cavity 9, and the purification tank 6 is filled with activated carbon particles. The harmful substances in the exhaust gas are adsorbed again by using the adsorption performance of activated carbon, the exhaust gas is shunted through the shunt holes 10, thereby increasing the contact area of activated carbon and exhaust gas and improving the adsorption effect. The fixed shaft 705 drives the spiral blade 706 to rotate, the spiral blade 706 turns over the bottom layer of activated carbon in the process of rotating, and the multiple stirring rods 707 are driven to rotate by the fixed shaft 705. The bottom of the inner wall of the purification tank 6 is designed as an inverted cone, so that the activated carbon at the edge of the purification tank 6 flows to the lowest place, and the spiral blade 706 continuously pushes the activated carbon upward, increasing the flowability of the activated carbon in the purification tank 6, and ensuring that the adsorption capacity of all activated carbon is fully utilized. The exhaust gas continues to flow upward and passes through the filter element 11, the filter element 11 purifies the exhaust gas again, and finally is discharged from the upper discharge pipe 13. By opening the cover plate 12, the filter element 11 can be replaced, and after the filter element 11 is removed, the bottom layer of activated carbon is exposed outside, which is also convenient for replacing the activated carbon.

Claims

1. A pollution-free exhaust gas treatment and purification device for nitrocellulose waste gas, comprising a treatment box (1), characterized in that: The bottom of the processing box (1) is connected with an air inlet assembly (2), the air inlet assembly (2) comprises an air inlet pipe (2001), a support frame (3) is fixed outside the air inlet assembly (2), the support frame (3) is fixed below the inner wall of the processing box (1), the top end of the air inlet assembly (2) is connected with an isolation assembly (4), the isolation assembly (4) is fixedly installed inside the processing box (1), four corners of the top of the processing box (1) are respectively connected with connecting pipes (5), the top end of the four connecting pipes (5) is connected with a purification box (6), the bottom of the purification box (6) is fixed on the processing box (1), one side of the processing box (1) is fixedly connected with a driving assembly (7), the two ends of the driving assembly (7) respectively extend to the inside of the processing box (1) and the purification box (6), a flow guide cavity (9) is formed in the bottom of the purification box (6), the top end of the connecting pipe (5) is connected with the flow guide cavity (9), a plurality of flow distribution holes (10) are formed in the top of the inner wall of the flow guide cavity (9), and the flow distribution holes (10) are connected with the inside of the purification box (6), a filter element (11) is arranged above the inside of the purification box (6), a cover plate (12) is arranged above the filter element (11), the cover plate (12) is clamped on the top of the purification box (6), a discharge pipe (13) is penetratingly installed in the middle of the cover plate (12), the bottom end of the discharge pipe (13) is connected with the inside of the purification box (6), a liquid guide assembly (14) is fixed on one side of the processing box (1), a cavity (15) is formed in the side wall of the processing box (1), the cavity (15) is connected with the end of the liquid guide assembly (14), a plurality of nozzles (16) are penetratingly installed on the inner wall of the cavity (15), and the plurality of nozzles (16) are directed to the middle of the processing box (1); The isolation assembly (4) comprises a rotating disc (402), the rotating disc (402) is fixedly connected with a filter cylinder (403), a plurality of filter holes (407) are formed in the outer wall of the filter cylinder (403), the bottom of the inner wall of the filter cylinder (403) is fixedly connected with an isolation cylinder (405), the top end of the air inlet pipe (2001) is connected with the inside of the isolation cylinder (405), the height of the isolation cylinder (405) is lower than that of the filter cylinder (403), a flow guide cover (406) is arranged above the isolation cylinder (405), and the flow guide cover (406) is designed in an inverted conical shape, the flow guide cover (406) is fixed on the top of the inner wall of the filter cylinder (403), a discharge pipe (408) is arranged between the isolation cylinder (405) and the inner wall of the filter cylinder (403), and the discharge pipe (408) is penetratingly installed in the rotating disc (402), a plurality of water drainage holes are formed in the two sides of the rotating disc (402); The driving assembly (7) comprises a motor (701) fixed on the treatment box (1), a driving gear (702) fixed on an output shaft of the motor (701), a driven gear (703) engaged with the driving gear (702), a fixed shaft (705) fixed in the middle of the driven gear (703), the fixed shaft (705) connected to the bottom of the purification box (6) through a rotating sleeve, a connecting rod (704) fixed at the bottom end of the fixed shaft (705), and the outer wall of the connecting rod (704) fixed to the inner wall of the isolation cylinder (405) through a plurality of supporting rods.

2. A pollution-free exhaust gas treatment and purification apparatus for nitrocellulose waste gas according to claim 1, characterized in that: The air inlet pipe (2001) is installed through the bottom of the treatment box (1), the top end of the air inlet pipe (2001) is sleeved with a shaft sleeve (2002), the shaft sleeve (2002) is clamped at the bottom of the isolation assembly (4), the air inlet pipe (2001) is clamped at the middle of the support frame (3), and the outer wall of the air inlet pipe (2001) is provided with a one-way valve (2003) near the bottom of the treatment box (1).

3. A pollution-free exhaust gas treatment and purification apparatus for nitrocellulose waste gas according to claim 2, characterized in that: The isolation assembly (4) comprises a bearing seat (401) clamped below in the treatment box (1), a filter cartridge (403) sleeved with a limiting sleeve (404) at the top, and the limiting sleeve (404) fixed at the top of the inner wall of the treatment box (1).

4. The pollution-free exhaust gas treatment and purification apparatus for nitrocellulose according to claim 3, characterized in that: A discharge valve (17) is arranged below the outer wall of the treatment box (1) and communicates with the inside of the treatment box (1).

5. A pollution-free exhaust gas treatment and purification apparatus for nitrocellulose according to claim 4, characterized in that: The outer wall of the fixed shaft (705) is fixedly connected with a spiral blade (706), the spiral blade (706) is arranged in the purification box (6) and located above the shunt hole (10), the bottom of the inner wall of the purification box (6) is designed in an inverted conical shape, a plurality of heat dissipation holes (8) are arranged on the lower portion of the outer wall of the purification box (6), and the top end of the fixed shaft (705) penetrates through the bottom of the purification box (6) and is fixedly connected with three stirring rods (707).

6. A pollution-free exhaust gas treatment and purification apparatus for nitrocellulose according to claim 5, characterized in that: The liquid guide assembly (14) comprises a water pump (141) fixed on one side of the treatment box (1), a water suction pipe (143) connected to the water inlet end of the water pump (141), and a water guide pipe (142) connected to the water outlet end of the water pump (141).

7. A purification method of a pollution-free exhaust gas treatment and purification device for nitrocellulose waste gas according to claim 6, wherein the pollution-free exhaust gas treatment and purification device for nitrocellulose waste gas according to claim 6 is characterized by, The purification method comprises the following steps: In the treatment of waste gas generated in the production process of nitrocellulose, the inlet pipe (2001) is connected to the waste gas discharge source, the waste gas enters the isolation cylinder (405) through the inlet pipe (2001), the one-way valve (2003) added outside the inlet pipe (2001) prevents the backflow of gas in the treatment box (1), when the waste gas contacts with the top flow guide cover (406), the inverted conical design of the flow guide cover (406) realizes the purpose of guiding the waste gas, and the height of the isolation cylinder (405) is lower than the height of the filter cylinder (403), so that the waste gas enters the space between the isolation cylinder (405) and the inner wall of the filter cylinder (403) from the top of the isolation cylinder (405), the filter hole (407) outside the filter cylinder (403) filters the waste gas, the dust particles are blocked by the filter hole (407), and the filtered waste gas is discharged from the filter hole (407), so that the waste gas is introduced into the space between the treatment box (1) and the inner wall of the filter cylinder (403); At the same time, the motor (701) and the water pump (141) are controlled to work, the water pump (141) at the bottom of the water pump (141) draws water from the water source, so that the water enters the cavity (15) in the side wall of the treatment box (1) through the water pump (141) and the water guide pipe (142), after the cavity (15) is filled with water, the pressure increases, so that the water is sprayed from the plurality of nozzles (16) to the filter cylinder (403) and contacts with the waste gas, the solubility of the waste gas in water is used, the volatile organic compounds in the waste gas are removed by water absorption, secondly, the output shaft of the motor (701) drives the driving gear (702) to rotate, the driving gear (702) drives the fixed shaft (705) to rotate through the driven gear (703), the fixed shaft (705) rotates through the connecting rod (704), the connecting rod (704) drives the isolation cylinder (405) to rotate through the support rod, the isolation cylinder (405) drives the filter cylinder (403) and the bottom rotary disc (402) to rotate, the rotary disc (402) is supported and limited by the bearing seat (401), thereby improving the stability of the rotation of the filter cylinder (403) and the isolation cylinder (405), as the filter cylinder (403) continues to rotate, the waste gas discharged from the filter hole (407) fully contacts with the water sprayed from the nozzle (16), further improving the effect of water adsorbing volatile organic compounds in the waste gas, the wastewater adsorbing volatile organic compounds falls into the bottom of the treatment box (1) from the drainage holes on both sides of the rotary disc (402), so that the wastewater does not accumulate above the rotary disc (402). The position of the nozzle (16) is towards the filter cartridge (403), so that the sprayed water directly impacts the outside of the filter cartridge (403), achieving the purpose of back flushing the filter hole (407), and the particulate impurities and sticky substances in the filter hole (407) are flushed out, and the filter cartridge (403) continues to rotate, so that the sprayed water can clean the filter cartridge (403) and the filter hole (407) in all directions, achieving the purpose of automatically cleaning the filter hole (407). The isolation cylinder (405) is located inside the filter cartridge (403), so that the sprayed water cannot enter the air inlet pipe (2001) through the isolation cylinder (405), achieving the purpose of isolating the water, preventing the water inlet pipe from accumulating water, and the particulate impurities and sticky substances mixed after being flushed out of the filter hole (407) will fall between the isolation cylinder (405) and the inner wall of the filter cartridge (403), and finally be discharged from the discharge pipe (408) at the bottom of the filter cartridge (403), that is, the waste water and the mixed substances are located at the bottom of the treatment box (1), and when the mixed substances and waste water are collected and treated, the discharge valve (17) outside the treatment box (1) is opened to discharge, and the treatment box (1) is cleaned without stopping the equipment; After the water adsorption process of the exhaust gas, the exhaust gas is introduced into the flow guide cavity (9) in the purification box (6) through the multiple connecting pipes (5), the exhaust gas enters the inside of the purification box (6) from the multiple shunt holes (10) in the flow guide cavity (9), and the purification box (6) is filled with activated carbon particles. The adsorption performance of activated carbon is used to adsorb harmful substances in the exhaust gas again, the exhaust gas is shunted through the shunt hole (10), thereby increasing the contact area of activated carbon and exhaust gas and improving the adsorption effect. The fixed shaft (705) drives the spiral blade (706) to rotate, and the spiral blade (706) rotates to lift the bottom layer of activated carbon. The fixed shaft (705) drives multiple stirring rods (707) to rotate. The bottom of the inner wall of the purification box (6) is designed as an inverted cone, so that the activated carbon at the edge of the purification box (6) flows to the lowest point. The spiral blade (706) continuously pushes the activated carbon upwards, increasing the fluidity of the activated carbon in the purification box (6), and ensuring that the adsorption capacity of all activated carbon is fully utilized. The exhaust gas continues to flow upwards and passes through the filter core (11), and the filter core (11) further purifies the exhaust gas. Finally, the exhaust gas is discharged from the upper discharge pipe (13). By opening the cover plate (12), the filter core (11) can be replaced. After removing the filter core (11), the bottom layer of activated carbon is exposed, and the activated carbon can also be replaced.

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