A gas purification system for producing nitrile gloves

Abstract

The application provides a gas purification system for butyronitrile glove production and belongs to the technical field of waste gas purification. The application comprises a treatment tank and further comprises a spraying cleaning assembly and a flow guiding and impurity removing assembly. Large-particle impurities are intercepted through initial filtration by a filter plate, small particles are centrifugally separated by a spiral blade, and then the waste gas is treated in stages by cooperating the spraying cleaning assembly and the flow guiding and impurity removing assembly. The gas is fully contacted with the purification liquid through a temporary storage barrel and a conical cylinder, so that the up-and-down wrapping type purification is realized, the gas-liquid contact area and reaction time are greatly increased, the mass transfer efficiency is greatly improved, and the waste gas is ensured to meet the discharge standard. The device optimizes the contact mechanism in multiple dimensions. On the one hand, the spiral blade guides the waste gas to spiral upward, thereby prolonging the residence time of the waste gas in the treatment tank. On the other hand, the temporary storage barrel and the conical cylinder cooperate to make the gas fully contact with the storage liquid in the temporary storage barrel, the sliding liquid in the conical cylinder and the liquid sprayed by the nozzle in sequence, thereby forming a triple purification path, ensuring that the gas and liquid are fully mixed and reacted, and ensuring the purification effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of exhaust gas purification, in particular to a gas purification system for nitrile glove production. BACKGROUND

[0002] Nitrile is an organic compound synthesized from acrylonitrile and butadiene. Nitrile gloves are an excellent combination of mechanical strength and chemical resistance, and have a series of disposable, inner liner and inner liner, which are widely used in electronics factories, medical examinations, food industry, housework, chemical industry, aquaculture, glass products and scientific research industries.

[0003] At present, gas purification devices are needed in the production process of nitrile gloves. Most traditional purification equipment adopts a single spray structure. The gas passes through the purification cavity in a straight line, which leads to short contact path and short time of the gas with the purification liquid, and it is difficult to meet the needs of full neutralization of acidic gases such as hydrogen chloride and sulfur dioxide with alkaline purification liquid, and deep reaction of volatile organic matter with absorption liquid. Even if some equipment increases the spray amount to improve the contact probability, due to the poor flow state of gas-liquid two-phase, the gas "short circuit" phenomenon easily occurs, that is, a large amount of gas is directly discharged without effective contact with the purification liquid, resulting in low purification efficiency. Part of the large particle size droplets cannot fully contact with the gas and fall to the bottom of the equipment, while the small particle size droplets are easily wrapped and discharged by the gas flow, which cannot play a purifying role. This makes the existing liquid type purification device greatly reduce the treatment effect of complex component waste gas, and it is difficult to meet the increasingly strict environmental protection emission standard, which restricts the green and sustainable development of nitrile glove production industry.

[0004] How to invent a gas purification system for nitrile glove production to solve these problems has become a problem to be solved by the technical personnel in the field. SUMMARY

[0005] In order to make up for the above shortcomings, the present application provides a gas purification system for nitrile glove production, which aims to solve the problems mentioned in the above background.

[0006] The present application is implemented as follows:

[0007] The present application provides a gas purification system for nitrile glove production, which comprises a treatment tank, the lower part of the treatment tank is provided with an air inlet pipe, the upper part is provided with an air outlet pipe, the bottom of the treatment tank is provided with a discharge pipe, the inside of the treatment tank is sequentially provided from bottom to top with a filter plate, a dehumidification plate and a partition plate, and further comprises:

[0008] The spray cleaning assembly is arranged in the treatment tank.

[0009] The flow guide and impurity removal assembly is arranged between the filter plate and the dehumidification plate.

[0010] Preferably, the lower sidewall of the treatment tank is provided with a cleaning door, the baffle is provided with air holes, the number of baffles is two and the baffles are arranged obliquely, the sidewall of the treatment tank is provided with a feeding port and a discharging port at the upper end and the lower end of the corresponding baffle respectively, and the two baffles are filled with activated carbon filler.

[0011] Preferably, the spray cleaning assembly comprises a liquid inlet pipe, a fan blade and a support, the liquid inlet pipe is installed in the middle of the treatment tank, a connecting cavity is connected to the lower end of the liquid inlet pipe inside the treatment tank, the fan blade is arranged inside the connecting cavity, the connecting shaft of the fan blade is fixedly connected to a limiting cylinder at the lower end, the middle of the limiting cylinder is provided with a limiting ring, the limiting ring abuts against the lower end of the connecting cavity, the support is fixed to the inner wall of the treatment tank, the upper side of the support abuts against the lower side of the limiting ring, the sidewall of the limiting cylinder is connected with a plurality of spray rods, and the lower side of the spray rod is provided with a plurality of nozzles.

[0012] Preferably, the end of the liquid inlet pipe outside the treatment tank is connected with an external purification liquid input pump through a pipeline, the lower end of the limiting cylinder is sealingly and rotatably connected with the connecting cavity, and the plurality of nozzles are distributed equidistantly.

[0013] Preferably, the spray cleaning assembly further comprises a connecting rod fixedly connected to the lower side of the limiting cylinder, the filter plate is provided with a through hole matched with the connecting rod, and the connecting rod is installed with a cleaning plate and a scraping plate, and the lower side of the cleaning plate is provided with soft bristles.

[0014] Preferably, the scraping plate abuts against the inner bottom wall of the treatment tank, and the end of the soft bristles abuts against the filter plate.

[0015] Preferably, the flow guide and impurity removal assembly comprises a spiral blade, a conical cylinder, a liquid storage groove, a liquid discharge pipe and a reciprocating thread part arranged on the connecting rod, the spiral blade is fixedly arranged on the inner wall of the treatment tank, the lower end of the conical cylinder is connected with a temporary storage barrel, the temporary storage barrel is arranged in the middle of the spiral blade, the upper side of the conical cylinder is fixedly connected with a plurality of connecting frames, the upper end of the connecting frame is connected with a baffle, a plurality of exhaust ports are distributed between the baffle and the conical cylinder, the bottom wall of the temporary storage barrel is threadedly connected with the reciprocating thread part, the outer sidewall of the temporary storage barrel is provided with an external thread, a plurality of air inlets are arranged on the upper sidewall of the temporary storage barrel, and two positioning plates are fixedly installed on the liquid discharge pipe, one of the positioning plates is arranged in the temporary storage barrel and the other is arranged on the lower side of the temporary storage barrel.

[0016] Preferably, the sidewall of the conical cylinder abuts against the inner wall of the treatment tank, the upper end of the conical cylinder is symmetrically provided with two limiting blocks, the inner wall of the treatment tank is provided with a sliding groove matched with the limiting block, there is a gap between adjacent air inlets, there is a gap between adjacent exhaust ports, and the end of the external thread abuts against the inner ring of the spiral blade.

[0017] Preferably, the liquid discharge pipe is fixed on the treatment tank, one end of the liquid discharge pipe extends to the inside of the temporary storage barrel, and the distribution of the two positioning plates corresponds to the position of the reciprocating threaded part.

[0018] Preferably, the liquid storage groove is provided in a petal shape, is fixed on the connecting rod and located inside the temporary storage barrel, the side wall of the liquid storage groove abuts against the inner wall of the temporary storage barrel, a plurality of liquid outlet holes are arranged on the side wall of the liquid storage groove close to the bottom of the liquid storage groove, the position of the liquid storage groove when the bottom wall of the temporary storage barrel abuts against the lower positioning plate corresponds to the position of the gas inlet, and the position of the liquid storage groove when the bottom wall of the temporary storage barrel abuts against the upper positioning plate is located below the gas inlet.

[0019] The present application has the following beneficial effects:

[0020] 1. The device can intercept large-particle impurities through the initial filtration of the filter plate, and the small particles can be centrifugally separated by the spiral piece, and the particulate matter, acid gas and water-soluble VOCs in the waste gas can be treated in stages by cooperating the spray cleaning assembly and the flow-guiding impurity removal assembly. In particular, the gas and the purification liquid are fully contacted by the design of the temporary storage barrel and the conical cylinder, so that the up-and-down wrapping type purification is realized, the gas-liquid contact area and the reaction time are greatly increased, the mass transfer efficiency is greatly improved, and the waste gas can be discharged in compliance with the standard. In view of the problem of insufficient gas-liquid contact in the existing liquid purification, the device optimizes the contact mechanism in multiple dimensions. On the one hand, the spiral piece guides the waste gas to spiral upward, prolonging the residence time of the waste gas in the treatment tank. On the other hand, the temporary storage barrel and the conical cylinder cooperate to make the gas fully contact with the storage liquid in the temporary storage barrel, the sliding liquid in the conical cylinder and the liquid sprayed by the nozzle in sequence, forming a three-stage purification path. At the same time, the purification liquid sprayed by the liquid storage groove forms a turbulent flow with the waste gas spirally rising, effectively avoiding the "short circuit" of the gas, ensuring the sufficient mixing and reaction of the gas and the liquid, and ensuring the purification effect.

[0021] 2. The system drives the connecting rod to rotate by using the spray cleaning assembly, drives the temporary storage barrel to move up and down, realizes the storage and spraying of the liquid in the liquid storage groove, and automatically cleans the oil sludge, particulate matter and other impurities on the surface of the spiral piece by combining the vibration of the spiral piece, thereby reducing the frequency of manual maintenance and the maintenance cost. The liquid in the temporary storage barrel realizes solid-liquid separation during the purification process, and the relatively clean liquid flows back to the external treatment chamber, can participate in the circulation again after being adjusted and filtered, significantly reduces the cost of reagent consumption, and reduces the discharge of waste liquid.

[0022] 3. Without additional power drive core operation components, only rely on the liquid thrust of the purification liquid to drive the fan blade and other components, greatly reduce the energy consumption, purification liquid drive process, drive cleaning plate, scraper automatic cleaning filter plate and the bottom wall of the treatment tank impurities, reduce the frequency of manual cleaning; Inclined partition cooperate with the feed inlet and discharge port, facilitate the replacement of activated carbon filler, reduce the difficulty and cost of maintenance, ensure long-term stable operation of the system; Through the filter plate, spray cleaning components, dehumidification plate and activated carbon filler multistage treatment, in turn remove particulate matter, acid gas, water vapor and volatile organic compounds and other pollutants, realize the deep purification of waste gas, ensure that the exhaust gas meets the environmental protection standard, effectively reduce air pollution. BRIEF DESCRIPTION OF DRAWINGS

[0023] 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 embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation to the scope, for those skilled in the art, without inventive labor, can also obtain other related drawings according to these drawings.

[0024] Figure 1 is the overall structure schematic diagram of the present application;

[0025] Figure 2 is the processing tank cross section structure schematic diagram of the present application;

[0026] Figure 3 is the temporary storage bucket cross section structure schematic diagram of the present application;

[0027] Figure 4 is the Figure 3 is the enlarged structure schematic diagram of A in the present application;

[0028] Figure 5 is the cross section structure front view schematic diagram of the present application;

[0029] Figure 6 is the structure schematic diagram of the temporary storage bucket bottom and the lower side of the positioning plate when they are in contact of the present application;

[0030] Figure 7 is the structure schematic diagram of the temporary storage bucket bottom and the upper side of the positioning plate when they are in contact of the present application;

[0031] Figure 8 is the air inlet and exhaust port distribution structure schematic diagram of the present application.

[0032] In the figure: 1, treatment tank; 2, filter plate; 3, spiral piece; 4, dehumidification plate; 5, conical cylinder; 6, temporary storage bucket; 7, connecting rod; 8, fan blade; 11, air inlet pipe; 12, exhaust pipe; 13, feed inlet; 14, partition; 15, liquid inlet pipe; 16, discharge pipe; 17, cleaning door; 51, connecting frame; 52, baffle; 53, exhaust port; 54, limiting block; 60, external thread; 61, air inlet; 62, liquid discharge pipe; 70, reciprocating threaded part; 71, liquid storage groove; 72, cleaning plate; 73, scraper; 81, limiting cylinder; 82, spray rod; 83, support; 131, discharge port; 141, activated carbon filler; 151, connecting cavity; 541, chute; 621, positioning plate; 711, liquid outlet hole; 821, nozzle. DETAILED DESCRIPTION

[0033] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] Embodiment one, refer to Figures 1-5 A gas purification system for butyronitrile glove production, comprising a treatment tank 1, the lower part of the treatment tank 1 is provided with an air inlet pipe 11, and the upper part is provided with an exhaust pipe 12, the air inlet pipe 11 is used to introduce waste gas generated in the production process, and the upper exhaust pipe 12 discharges the purified gas, the bottom of the treatment tank 1 is provided with a discharge pipe 16, which can discharge impurities collected in the treatment process, and the inside of the treatment tank 1 is sequentially provided from bottom to top with a filter plate 2, a dehumidification plate 4 and a partition 14, the filter plate 2 is used to filter particulate matter in the gas, the dehumidification plate 4 is responsible for removing moisture in the gas, creating favorable conditions for efficient adsorption of activated carbon filler 141, and enhancing the adsorption efficiency of activated carbon on pollutants, further comprising:

[0035] Spray cleaning assembly: the spray cleaning assembly is arranged in the treatment tank 1;

[0036] Flow guide and impurity removal assembly: the flow guide and impurity removal assembly is arranged between the filter plate 2 and the dehumidification plate 4.

[0037] Further, the lower side wall of the treatment tank 1 is provided with a cleaning door 17, facilitating the dredging and cleaning of the interior of the treatment tank 1. The baffle plate 14 is provided with air holes, and the number of baffle plates 14 is two and is arranged obliquely. The side wall of the treatment tank 1 corresponding to the upper and lower ends of the baffle plate 14 is respectively provided with a feeding port 13 and a discharging port 131. The two baffle plates 14 are filled with activated carbon filler 141. The feeding port 13 and the discharging port 131 are arranged to facilitate the replacement and replenishment of the activated carbon filler 141.

[0038] The spray cleaning assembly comprises a liquid inlet pipe 15, a fan blade 8 and a support 83. The liquid inlet pipe 15 is installed in the middle of the treatment tank 1. The lower end of the liquid inlet pipe 15 inside the treatment tank 1 is connected with a connecting cavity 151. The fan blade 8 is arranged inside the connecting cavity 151. The connecting shaft of the fan blade 8 is fixedly connected with a limiting cylinder 81 at the lower end. The middle of the limiting cylinder 81 is provided with a limiting ring which abuts against the lower end of the connecting cavity 151. The support 83 is fixed on the inner wall of the treatment tank 1. The upper side of the support 83 abuts against the lower side of the limiting ring. The support 83 can ensure the stable rotation of the limiting cylinder 81. When the purification liquid is injected, the fan blade 8 will drive the limiting cylinder 81 and the spray rod 82 to rotate and spray the purification liquid downward, and mix with the filtered gas. The side wall of the limiting cylinder 81 is connected with a plurality of spray rods 82. The lower side of the spray rod 82 is provided with a plurality of nozzles 821. The spray cleaning assembly further comprises a connecting rod 7 fixedly connected with the lower side of the limiting cylinder 81. The filter plate 2 is provided with a through hole matched with the connecting rod 7. The connecting rod 7 is installed with a cleaning plate 72 and a scraping plate 73. The lower side of the cleaning plate 72 is provided with soft bristles.

[0039] It should be noted that the end of the liquid inlet pipe 15 outside the treatment tank 1 is connected with an external purification liquid input pump through a pipeline. The waste gas produced in the production of nitrile gloves often contains hydrogen chloride, sulfur dioxide and other acidic gases. The purification liquid can be selected from sodium hydroxide solution, calcium hydroxide solution and other alkaline liquids. These alkaline solutions can react with acidic gases to convert them into salt and water, thereby removing acidic pollutants in the waste gas and making it meet the emission standard. The limiting cylinder 81 is sealingly and rotatably connected with the lower end of the connecting cavity 151. The plurality of nozzles 821 are equidistantly distributed. The scraping plate 73 abuts against the inner bottom wall of the treatment tank 1 for cleaning the impurities at the bottom of the tank. The end of the soft bristles abuts against the filter plate 2 to ensure that the soft bristles on the lower side of the cleaning plate 72 can effectively clean the filter plate 2.

[0040] In this embodiment, after the nitrile glove production waste gas enters the treatment tank 1 through the air inlet pipe 11, it first passes through the filter plate 2. The filter plate 2 blocks the particles such as rubber chips and dust in the waste gas with a larger particle size on the surface of the filter plate 2, so that the gas and the particles are preliminarily separated, and only the gas is allowed to continue to flow upward through the filter plate 2, effectively removing a large amount of visible particles in the waste gas and reducing the processing load of the subsequent purification assembly.

[0041] The filtered waste gas continues to rise, at this time the spray cleaning assembly starts, the external purification liquid input pump delivers the alkaline purification liquid (such as sodium hydroxide solution, calcium hydroxide solution) to the connecting cavity 151 through the liquid inlet pipe 15, the purification liquid impacts the fan blade 8, drives the fan blade 8, the limiting cylinder 81 and the spray rod 82 to rotate, the spray rod 82 on the side wall of the limiting cylinder 81 sprays the purification liquid uniformly in the inside of the treatment tank 1 through the equidistantly distributed nozzles 821, the alkaline purification liquid reacts with the residual hydrogen chloride, sulfur dioxide and other acidic gases in the waste gas to generate salt and water, realizing deep purification of the acidic pollutants, at the same time, the connecting rod 7 rotates with the limiting cylinder 81, the soft brush of the cleaning plate 72 sweeps the surface of the filter plate 2, preventing the accumulation of particulate matter from affecting the filtering effect; the scraper 73 can clean the impurities deposited on the inner bottom wall of the treatment tank 1 and discharge them through the discharge pipe 16.

[0042] The waste gas after spray purification carries the generated water and the original water vapor, and continues to flow upward to the dehumidification plate 4. The dehumidification plate 4 is made of silica gel, molecular sieve and other high-efficiency moisture-absorbing materials. The porous structure and strong water-absorbing property of the materials are used to adsorb the water vapor molecules in the waste gas on the surface of the materials, realizing the dehumidification treatment of the waste gas, reducing the humidity of the waste gas. The dry waste gas after dehumidification treatment enters the area filled with activated carbon filler 141 between the two inclined partition plates 14 through the air holes on the partition plate 14. The activated carbon can adsorb volatile organic compounds, odor substances and other pollutant molecules remaining in the waste gas. The pollutant molecules adhere to the surface of the activated carbon micropores, realizing deep purification of the waste gas. The finally purified gas is discharged from the exhaust pipe 12. The high-efficiency adsorption of the remaining pollutants in the waste gas greatly reduces the pollutant concentration in the waste gas, so that the discharged gas meets the strict environmental emission standards, reducing the pollution to the atmospheric environment. The inclined partition plate 14 cooperates with the feed inlet 13 and the discharge outlet 131, facilitating the replacement and replenishment of the activated carbon filler 141, and ensuring the continuous effectiveness of the activated carbon adsorption function.

[0043] Without additional power to drive the core operating components, only rely on the liquid thrust of the purification liquid to drive the fan blade 8 and other components to operate, greatly reducing energy consumption. During the purification liquid driving process, the cleaning plate 72 and the scraper 73 automatically clean the impurities on the filter plate 2 and the inner bottom wall of the treatment tank 1, reducing the frequency of manual cleaning. The inclined partition plate 14 cooperates with the feed inlet 13 and the discharge outlet 131, facilitating the replacement and replenishment of the activated carbon filler 141, reducing the difficulty and cost of maintenance, and ensuring the long-term stable operation of the system. Through the multi-stage treatment of the filter plate 2, the spray cleaning assembly, the dehumidification plate 4 and the activated carbon filler 141, the particulate matter, acidic gas, water vapor and volatile organic compounds and other pollutants are removed in turn, realizing deep purification of the waste gas, ensuring that the discharged gas meets the environmental protection standards, and effectively reducing air pollution.

[0044] Example two, refer to Figures 3-8The flow guide and impurity removal assembly comprises a spiral blade 3, a conical cylinder 5, a liquid storage groove 71, a liquid discharge pipe 62 and a reciprocating threaded part 70 arranged on the connecting rod 7. The spiral blade 3 is fixedly arranged on the inner wall of the treatment tank 1. The lower end of the conical cylinder 5 is connected with a temporary storage barrel 6. The temporary storage barrel 6 is arranged in the middle part of the spiral blade 3. The spiral blade 3 guides the spiral upward movement of the waste gas, prolongs the residence time of the waste gas in the tank, enhances the purification effect, and generates centrifugal force in the process of upward movement, which promotes the further separation of small particles in the gas. The upper side of the conical cylinder 5 is fixedly connected with a plurality of connecting frames 51. The upper end of the connecting frame 51 is connected with a baffle 52. A plurality of exhaust ports 53 are arranged between the baffle 52 and the conical cylinder 5. The bottom wall of the temporary storage barrel 6 is threadedly connected with the reciprocating threaded part 70. When the connecting rod 7 rotates, the temporary storage barrel 6 and the conical cylinder 5 will move up and down within a certain range under the driving of the reciprocating threaded part 70. The outer side wall of the temporary storage barrel 6 is provided with external threads 60. A plurality of gas inlets 61 are arranged on the upper side wall of the temporary storage barrel 6. Two positioning plates 621 are fixedly arranged on the liquid discharge pipe 62. One of the two positioning plates 621 is arranged in the temporary storage barrel 6, and the other is arranged on the lower side of the temporary storage barrel 6. The liquid discharge pipe 62 is fixedly arranged on the treatment tank 1. One end of the liquid discharge pipe 62 extends into the temporary storage barrel 6. The positions of the two positioning plates 621 correspond to the positions of the reciprocating threaded part 70. The two positioning plates 621 are used to limit the temporary storage barrel 6. The liquid in the temporary storage barrel 6 is in a relatively clean state without the interference of particles, so it does not need to be filtered. The liquid will flow back to the external treatment chamber through the liquid discharge pipe 62, and then participate in the circulation after being treated by pH adjustment and filtration, thereby significantly reducing the cost of medicament consumption.

[0045] Further, the side wall of the conical cylinder 5 abuts against the inner wall of the treatment tank 1, so that the purified liquid sprayed through the nozzle 821 falls onto the surface of the conical cylinder 5 and slides into the temporary storage barrel 6 under the action of gravity, without directly falling into the tank, thereby ensuring the cleanliness. The upper end of the conical cylinder 5 is symmetrically provided with two limiting blocks 54. The inner wall of the treatment tank 1 is provided with a sliding groove 541 matched with the limiting blocks 54. There is a gap between adjacent gas inlets 61 and a gap between adjacent exhaust ports 53. The end of the external threads 60 abuts against the inner ring of the spiral blade 3, so that the end of the external threads 60 can vibrate with the inner ring of the spiral blade 3 when the temporary storage barrel 6 moves, thereby causing the spiral blade 3 to vibrate, so that the particles and impurities on the spiral blade 3 slide off.

[0046] It should be noted that the liquid storage groove 71 is provided in a petal shape, which can store part of the liquid, and at the same time, when it rotates, it can also ensure that the exhaust gas can smoothly enter the temporary storage barrel 6 through the air inlet 61. The gas entering the temporary storage barrel 6 will overflow along the surface of the conical cylinder 5 under the blocking of the baffle 52. This part of the gas will be purified in multiple ways, one is the action of the liquid stored in the temporary storage barrel 6, two is the action of the liquid contacting with the liquid sliding along the surface of the conical cylinder 5, three is the action of the liquid contacting with the liquid sprayed through the nozzle 821. This can wrap the gas in all directions for purification, which improves the mixing effect of the purification liquid and the gas.

[0047] The liquid storage groove 71 is fixed on the connecting rod 7 and located inside the temporary storage barrel 6. The side wall of the liquid storage groove 71 abuts against the inner wall of the temporary storage barrel 6. The liquid storage groove 71 can store part of the liquid sliding from the conical cylinder 5. The side wall of the liquid storage groove 71 near the bottom of the liquid storage groove 71 is provided with a plurality of liquid outlet holes 711. The position of the liquid storage groove 71 corresponds to the position of the air inlet 61 when the bottom wall of the temporary storage barrel 6 abuts against the lower positioning plate 621 (see Figure 6 ). At this time, under the action of the centrifugal force and the gravity of the liquid in the liquid storage groove 71, this part of the liquid will be sprayed into the air inlet 61 opposite to it through the liquid outlet holes 711. This part of the liquid can participate in purification on the one hand, and can settle the particulate impurities inside the spiral blade 3 on the other hand, and can clean the impurities adhered to the surface of the spiral blade 3 under the action of the liquid flow. At this time, under the joint action of the sprayed purification liquid and the vibration of the spiral blade 3, the impurity mixture can fall freely along the spiral blade 3. The falling impurity mixture will finally pass through the filter plate 2 and fall to the bottom of the treatment tank 1, and then be discharged through the discharge pipe 16. When the bottom wall of the temporary storage barrel 6 abuts against the upper positioning plate 621, the liquid storage groove 71 is located below the air inlet 61 (see Figure 7 ). At this time, the liquid outlet holes 711 are blocked by the inner wall of the temporary storage barrel 6, and the liquid in the liquid storage groove 71 cannot flow out. At this time, the liquid storage groove 71 can effectively accumulate the liquid sliding along the surface of the conical cylinder 5, so as to ensure that the liquid in the liquid storage groove 71 has accumulated to a certain degree when the liquid storage groove 71 is opposite to the air inlet 61, and to ensure the cleaning strength.

[0048] In the embodiment, after the exhaust gas enters the treatment tank 1 from the air inlet pipe 11, the filtered gas spirally rises under the guidance of the fixed spiral blade 3. The centrifugal force promotes the small particulate impurities in the gas to move to the inner wall of the treatment tank 1 and separate, and at the same time, the residence time of the exhaust gas in the tank is prolonged, which creates conditions for subsequent purification.

[0049] When the spray cleaning assembly is started, the cleaning liquid impacts the fan blade 8 through the liquid inlet pipe 15, driving the connecting rod 7 to rotate. When the connecting rod 7 rotates, the temporary storage barrel 6 and the conical cylinder 5 are periodically moved up and down through the reciprocating threaded portion 70. The cleaning liquid is sprayed out through the nozzle 821 and falls on the surface of the conical cylinder 5, forming a liquid film. Under the action of gravity, the liquid film slides into the temporary storage barrel 6. The liquid storage groove 71 is fixed on the connecting rod 7 and can store part of the liquid that slides off the conical cylinder 5 when the connecting rod 7 rotates. When the temporary storage barrel 6 moves down and abuts against the lower positioning plate 621, the liquid storage groove 71 corresponds to the air inlet 61. The liquid in the liquid storage groove 71 is sprayed into the air inlet 61 through the liquid outlet hole 711 under the action of centrifugal force and gravity, participates in the purification of waste gas, and settles and cleans the impurities on the surface of the spiral blade 3. When the temporary storage barrel 6 moves up and abuts against the upper positioning plate 621, the liquid storage groove 71 is blocked by the inner wall of the temporary storage barrel 6, and starts to accumulate liquid, preparing for the next cleaning.

[0050] The gas entering the temporary storage barrel 6 is blocked by the baffle 52 and is forced to overflow along the surface of the conical cylinder 5. In this process, the gas fully contacts the liquid stored in the temporary storage barrel 6, the liquid that slides off the surface of the conical cylinder 5, and the liquid sprayed out by the nozzle 821. The liquid stored in the temporary storage barrel 6 absorbs part of the water-soluble VOCs (such as acetone and methanol), and the liquid that slides off the surface of the conical cylinder 5 continuously neutralizes the acidic gas, prolongs the reaction path, ensures complete reaction, and forms a top cover layer with the liquid sprayed out by the nozzle 821, which reversely contacts the rising waste gas, strengthens the mass transfer process, realizes omnidirectional wrapping purification, and improves the mixing effect of the cleaning liquid and the gas.

[0051] Under the joint action of the cleaning liquid sprayed out of the liquid outlet hole 711 and the vibration of the spiral blade 3 (vibration between the end of the outer thread 60 and the inner circle of the spiral blade 3 when the temporary storage barrel 6 moves), the sludge, particulate matter and other impurities attached to the spiral blade 3 are detached under the action of shear force and inertial force, and fall along the spiral blade 3, pass through the filter plate 2 and fall to the bottom of the treatment tank 1, and finally are discharged through the discharge pipe 16. The relatively clean liquid in the temporary storage barrel 6 is returned to the external treatment chamber through the liquid discharge pipe 62 and participates in the circulation. In the entire purification process, the liquid in the temporary storage barrel 6 continuously receives the cleaning liquid that slides off the surface of the conical cylinder 5 and the liquid after reaction with the waste gas. Since most of the particulate matter in the waste gas has been separated or captured in the early stage, and the salts and other substances generated by the reaction with the acidic gas have a certain solubility in the liquid, the liquid in the temporary storage barrel 6 will realize solid-liquid separation during standing or flowing, so that the impurity content in the liquid is reduced to a relatively clean state.

[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A gas purification system for nitrile glove production, comprising a treatment tank (1), the lower part of the treatment tank (1) is provided with an air inlet pipe (11), the upper part is provided with an air outlet pipe (12), the bottom of the treatment tank (1) is provided with a discharge pipe (16), the inside of the treatment tank (1) is sequentially installed from bottom to top with a filter plate (2), a dehumidification plate (4) and a partition plate (14), characterized in that, Also include: Spray cleaning assembly: the spray cleaning assembly is arranged in the treatment tank (1); the spray cleaning assembly includes a liquid inlet pipe (15), a fan blade (8) and a support (83), the liquid inlet pipe (15) is installed in the middle of the treatment tank (1), the lower end of the liquid inlet pipe (15) inside the treatment tank (1) is connected with the connecting cavity (151), the fan blade (8) is arranged inside the connecting cavity (151), the connecting shaft lower end of the fan blade (8) is fixedly connected with the limiting cylinder (81), the middle part of the limiting cylinder (81) is provided with a limiting ring, the limiting ring is abutted with the lower end of the connecting cavity (151), the support (83) is fixed on the inner wall of the treatment tank (1), the upper side of the support (83) is abutted with the lower side of the limiting ring, the side wall of the limiting cylinder (81) is connected with a plurality of spray rods (82), the lower side of the spray rod (82) is provided with a plurality of nozzles (821), the spray cleaning assembly further comprises a connecting rod (7) fixedly connected with the lower side of the limiting cylinder (81), a through hole matched with the connecting rod (7) is arranged on the filter plate (2), the connecting rod (7) is provided with a cleaning plate (72) and a scraper (73), the lower side of the cleaning plate (72) is provided with soft bristles; The flow guide impurity removal assembly is arranged between the filter plate (2) and the dehumidification plate (4); the flow guide impurity removal assembly includes a spiral blade (3), a conical cylinder (5), a liquid storage groove (71), a liquid discharge pipe (62) and a reciprocating threaded part (70) arranged on the connecting rod (7), the spiral blade (3) is fixedly arranged on the inner wall of the treatment tank (1), the lower end of the conical cylinder (5) is connected with a temporary storage barrel (6), the temporary storage barrel (6) is arranged in the middle of the spiral blade (3), the upper side of the conical cylinder (5) is fixedly connected with a plurality of connecting frames (51), the upper end of the connecting frame (51) is connected with a baffle (52), a plurality of air outlets (53) are distributed between the baffle (52) and the conical cylinder (5), the bottom wall of the temporary storage barrel (6) is threadedly connected with the reciprocating threaded part (70), the outer side wall of the temporary storage barrel (6) is provided with an external thread (60), a plurality of air inlets (61) are arranged on the upper side wall of the temporary storage barrel (6), two positioning plates (621) are fixedly installed on the liquid discharge pipe (62), one of the positioning plates (621) is located in the temporary storage barrel (6), and the other is located on the lower side of the temporary storage barrel (6).

2. The gas purification system for nitrile glove production according to claim 1, characterized in that, The lower side wall of the treatment tank (1) is provided with a cleaning door (17), the partition plate (14) is provided with a breathable hole, the number of the partition plate (14) is two and the partition plate (14) is arranged obliquely, the side wall of the treatment tank (1) corresponding to the upper and lower ends of the partition plate (14) is provided with a feeding port (13) and a discharging port (131) respectively, and the two partition plates (14) are filled with activated carbon filler (141).

3. The gas purification system for nitrile glove production according to claim 1, characterized in that, The end of the liquid inlet pipe (15) outside the treatment tank (1) is connected with an external purification liquid input pump through a pipeline, the lower end of the limiting cylinder (81) and the connecting cavity (151) are sealingly and rotatably connected, and a plurality of nozzles (821) are equidistantly distributed.

4. The gas purification system for nitrile glove production according to claim 1, characterized in that, The scraper (73) abuts against the inner bottom wall of the treatment tank (1), and the end of the soft brush abuts against the filter plate (2).

5. The gas purification system for nitrile glove production according to claim 1, characterized in that, The side wall of the conical cylinder (5) abuts against the inner wall of the treatment tank (1), the upper end of the conical cylinder (5) is symmetrically provided with two limiting blocks (54), the inner wall of the treatment tank (1) is provided with a sliding groove (541) matched with the limiting block (54), there is a gap between adjacent air inlets (61), there is a gap between adjacent air outlets (53), and the end of the external thread (60) abuts against the inner ring of the spiral blade (3).

6. The gas purification system for nitrile glove production according to claim 1, characterized in that, The liquid discharge pipe (62) is fixed on the treatment tank (1), one end of the liquid discharge pipe (62) extends into the temporary storage barrel (6), and the distribution of the two positioning plates (621) corresponds to the position of the reciprocating threaded part (70).

7. The gas purification system for nitrile glove production according to claim 1, characterized in that, The liquid storage groove (71) is provided in a petal shape, the liquid storage groove (71) is fixed on the connecting rod (7) and located in the temporary storage barrel (6), the side wall of the liquid storage groove (71) abuts against the inner wall of the temporary storage barrel (6), a plurality of liquid outlet holes (711) are formed in the side wall of the liquid storage groove (71) close to the bottom of the liquid storage groove (71), the position of the liquid storage groove (71) when the bottom wall of the temporary storage barrel (6) abuts against the lower positioning plate (621) corresponds to the position of the air inlet (61), and the liquid storage groove (71) when the bottom wall of the temporary storage barrel (6) abuts against the upper positioning plate (621) is located below the air inlet (61).

Images