Waste gas treatment equipment for laboratory fume hood

Abstract

The invention relates to the technical field of waste gas treatment, and discloses laboratory fume hood waste gas treatment equipment which comprises a treatment box, an air inlet pipe is fixedly connected to the front side face of the treatment box, a reciprocating lead screw is arranged in the air inlet pipe, and fixing clamping plates are fixedly connected to the upper face and the lower face of the inner wall of the treatment box. According to the device, large-particle impurities in waste gas are blocked by the filter plate and separated from the waste gas, so that the waste gas is preliminarily filtered, follow-up treatment is facilitated, the large-particle impurities on the filter plate are shaken off through vibration of the movable clamping plate and the filter plate, the filter plate is prevented from being blocked, continuous filtering is facilitated, and the filtering efficiency is improved; large-particle impurities falling into the treatment box can be treated by pushing a sliding baffle to open the treatment box, and at the moment, a filtering plate can be taken out to be cleaned, so that the large-particle impurities cannot be accumulated in the treatment box, and the waste gas filtering effect of the device is further promoted.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to waste gas treatment equipment for a laboratory fume hood. Background Art

[0002] Laboratory fume hoods are important equipment for safe laboratory operations. Their main function is to effectively control and eliminate harmful gases, vapors, dust and other dangerous substances generated during the experiment, and to protect experimenters and the laboratory environment from their effects. Laboratory fume hoods usually need to treat the internal exhaust gas after use to prevent direct exhaust gas discharge from polluting the environment. Existing laboratory fume hood exhaust gas treatment devices make it difficult to treat the filter plate that filters the exhaust gas while treating the exhaust gas, resulting in excessive impurities and dust in the exhaust gas. When the particles are too large, the filter plate is easily blocked, thereby reducing the exhaust gas treatment efficiency.

[0003] Patent No. CN202323106582.5 discloses an exhaust gas treatment device, in which the cleaning device includes an electric push rod, a push plate is installed in front of the electric push rod, three connecting rods are arranged behind the push plate, a scraper is installed behind the connecting rod, a collection box is arranged behind the scraper, and the main device includes a treatment box, an air inlet pipe is installed in front of the treatment box, an air outlet pipe is arranged on the top of the treatment box, a stirring blade is installed at the bottom of the treatment box, a motor is installed on one side of the stirring blade, and a first filter is buckled with the filter box. The return pipe is a rectangular square pipe, the return pipe is sealed and connected to the filter box, a smooth layer is provided on the surface of the connecting rod, the connecting rod is made of stainless steel, the collecting box is made of transparent PVC plastic, the collecting box is snap-connected to the filter box, and the stirring blade is made of stainless steel. The setting of extracting dirty water and then filtering and then returning it improves the cleaning efficiency of dust in the water. The setting of scraping off the filtered dust and collecting it ensures the normal filtration and further improves the cleaning efficiency. The setting of triple filtration improves the cleaning effect.

[0004] Although this patent solves the above problems, it is still difficult to treat the filter plate that filters the exhaust gas while treating the exhaust gas, resulting in excessive impurities and dust in the exhaust gas. When the particles are too large, it is easy to cause the filter plate to be blocked, resulting in reduced exhaust gas treatment efficiency. Therefore, a laboratory fume hood exhaust gas treatment equipment is proposed to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a laboratory fume hood exhaust gas treatment device in view of the deficiencies in the above-mentioned prior art.

[0006] The vent pipe is provided with a reciprocating screw rod, and a fixed clamping plate is fixedly connected to the upper and lower surfaces of the inner wall of the vent pipe, and a sliding rod is slidably connected to the inner surface of the fixed clamping plate. The end of the sliding rod is fixedly connected to a movable splint away from the fixed clamping plate, and a side of the movable splint away from the sliding rod is clamped with a filter plate, and handles are fixedly connected to the two sides of the inner wall of the vent pipe. The side of the extension plate away from the filter plate is slidably connected to the sliding baffle, and the outer surface of the reciprocating screw rod is movably connected to a movable sleeve shaft, and the front and rear ends of the outer surface of the movable sleeve shaft are fixedly connected to limiting collars, an adsorption device for adsorbing organic matter in the exhaust gas is provided inside the vent pipe, and a dust suppression device for adhering to fine particles in the exhaust gas is provided inside the vent pipe. The sliding baffle is slidably connected to the inner wall of the processing box, and a spring is arranged between the fixed card plate and the movable splint, and a motor is installed at the front end of the reciprocating screw rod, and the motor is fixedly connected to the front side of the processing box, and the filter plate is fixedly connected to the outer surface of the movable sleeve shaft, and the air inlet pipe is connected to the fume hood. The exhaust gas treated by the fume hood enters the processing box from the air inlet pipe. When the exhaust gas contacts the filter plate, the large particle impurities therein are blocked by the filter plate and separated from the exhaust gas. The motor is started, and the motor drives the reciprocating screw rod to rotate, and the reciprocating screw rod drives the movable sleeve shaft and the limit sleeve ring to reciprocate back and forth, and the movable sleeve shaft drives the filter plate to reciprocate back and forth, and the filter plate drives the movable splint and the sliding rod to reciprocate back and forth. When the movable splint moves reciprocatingly, the spring between the movable splint and the fixed card plate is squeezed, and the elasticity of the spring causes the movable splint and the filter plate to vibrate. When the device stops working, the sliding baffle can be pushed to open the processing box, so that the staff can process the large particle impurities falling into the processing box.

[0007] Preferably, the adsorption device includes a first partition, a circular adsorption box, a twisting cover, and a feed pipe. The first partition is fixedly connected to the inner wall of the processing box, the circular adsorption box is arranged inside the processing box, the twisting cover is threadedly connected to the inner surface of the processing box, and the feed pipe is fixedly connected to the top surface of the processing box. The adsorption device also includes a turntable, a fixed rod, a sleeve, a limit plate, and an arc-shaped friction plate. The turntable is fixedly connected to the rear end of the reciprocating screw rod, the fixed rod is fixedly connected to the rear side of the turntable, the sleeve is sleeved on the outer surface of the fixed rod, the limit plate is fixedly connected to the rear end of the fixed rod, and the arc-shaped friction plate is fixedly connected to the rear side of the first partition. The reciprocating screw rod is rotatably connected to the inner surface of the first partition. The sleeve is fixedly connected to the inner surface of the circular adsorption box, and the outer surface of the circular adsorption box is in sliding contact with the inner arc surface of the arc-shaped friction plate. An air inlet is provided on the top of the first partition plate, and the exhaust gas that has been preliminarily filtered enters the rear side of the first partition plate through the air inlet provided on the first partition plate. At this time, the organic matter in the exhaust gas is adsorbed by the activated carbon in the circular adsorption box, and the reciprocating screw drives the turntable to rotate, and the turntable drives the fixed rod and the limit plate to rotate in a circle. The fixed rod drives the sleeve to rotate in a circle, and the sleeve drives the circular adsorption box to rotate in a circle. When the circular adsorption box rotates in a circle, the activated carbon inside it rolls. When the circular adsorption box contacts the arc-shaped friction plate during its circular rotation, the friction force generated causes the circular adsorption box to rotate along the fixed rod.

[0008] Preferably, the dust reduction device includes a second partition, a third partition, a water inlet pipe, a water hose, a water spray box, a nozzle, and an air inlet pipe. The second partition is fixedly connected to the inner wall of the treatment box, the third partition is fixedly connected to the rear side of the second partition, the water inlet pipe is fixedly connected to the rear side of the treatment box, the bottom end of the water hose is fixedly connected to the left side of the treatment box, the water spray box is fixedly connected to the right side of the top of the water hose, the nozzle is fixedly connected to the bottom surface of the water spray box, and the air inlet pipe is fixedly connected to the rear side of the second partition. The dust reduction device also includes a toggle rod, a sliding frame, a connecting block, a U-shaped push rod, a slide rail, a T-shaped slider, and a circulation system. The toggle rod is fixedly connected to the rear side of the turntable, the sliding frame is movably connected to the outer surface of the toggle rod, and the connecting block is fixedly connected to the left side of the treatment box. The t-shaped slider is slidably connected to the inner surface of the slide rail, and the circulation system is arranged at the bottom of the processing box. The circulation system includes a fourth partition, a water storage pipe, a connecting rod, a friction strip, a friction wheel, an impeller, a dosing pipe, and a slag discharge pipe. The fourth partition is fixedly connected to the upper surface of the third partition, the water storage pipe is fixedly connected to the upper surface of the third partition, the connecting rod is fixedly connected to the bottom surface of the U-shaped push rod, the friction strip is fixedly connected to the bottom end of the connecting rod, the friction wheel is rotatably connected to the rear side of the bottom of the second partition, the impeller is connected to the rear side of the friction wheel, the dosing pipe is fixedly connected to the rear side of the processing box, and the slag discharge pipe is fixedly connected to the processing box. On the right side of the box, a slide groove 1 is provided at the front end of the third partition, and the connecting rod is slidably connected to the inner surface of the slide groove 1, and the top end of the water hose passes through the left side of the treatment box and enters the interior of the treatment box, and a slide groove 2 is provided on the inner side of the second partition, and the connecting block is slidably connected to the inner surface of the slide groove 2, and the left and right side surfaces of the water spray box are in contact with the inner surface of the U-shaped push rod, the T-shaped slider is fixedly connected to the top surface of the water spray box, and the friction strip and the friction wheel are in contact with each other, and a water pump is installed on the right side of the bottom end of the water hose, and the water pump is fixedly connected to the inner wall of the treatment box, and the exhaust gas enters the rear side of the second partition from the air inlet pipe, and the water is poured into the treatment box through the water inlet pipe. At this time, the water is blocked at the rear side of the second partition and under the third partition, and the water pump is started, and the water pump pumps the water under the third partition through the water hose In the output water spray box, when the water fills the water spray box, the water spray box sprays water to the area behind the second partition in the treatment box through multiple nozzles, so that the tiny particles in the exhaust gas entering the rear side of the second partition are adhered by the sprayed water, and then fall on the third partition. While the nozzle sprays water, the turntable drives the toggle rod to rotate in a circle, the toggle rod drives the sliding frame to reciprocate left and right, the sliding frame drives the connecting block and the U-shaped push rod to reciprocate left and right, and the U-shaped push rod drives the water spray box to slide back and forth left and right in the slide rail through the T-shaped slider, so that the water sprayed from the water spray box can cover the area behind the second partition in the treatment box. When the water falling on the third partition submerges the water storage pipe, the water flows from the water storage pipe to the bottom of the third partition. At this time, flocculant is added to the water through the dosing pipe.The impurities and water are separated and then precipitated to the bottom of the treatment box. At the same time, the U-shaped push rod moves back and forth to drive the connecting rod and the friction strip to move back and forth. The friction strip rubs against the friction wheel and drives it to rotate. The friction wheel drives the impeller to rotate. The impeller stirs the water under the third partition to make the condensed impurities precipitate more quickly. When the exhaust gas treatment is completed, the impurities and sewage can be discharged through the slag discharge pipe.

[0009] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The laboratory fume hood exhaust gas treatment equipment, the large particles of impurities in the exhaust gas are blocked by the filter plate and separated from the exhaust gas, so that the exhaust gas is initially filtered, which is convenient for subsequent treatment. The movable splint and the filter plate vibrate to shake off the large particles of impurities on the filter plate, preventing the filter plate from being blocked, facilitating continuous filtration, and improving the filtration efficiency. Pushing the sliding baffle to open the treatment box can process the large particles of impurities that fall into the treatment box, and at this time the filter plate can be taken out for cleaning, so that the large particles of impurities cannot accumulate in the treatment box, further promoting the filtering effect of the device on the exhaust gas.

[0010] 2. The laboratory fume hood exhaust gas treatment equipment, the organic matter in the exhaust gas is adsorbed by the activated carbon in the circular adsorption box, avoiding the impact of the exhaust gas containing organic matter on the environment after being discharged. The circular adsorption box rotates in a circle while the activated carbon inside it rolls, which increases the contact area between the activated carbon and the exhaust gas, so that the organic matter in the exhaust gas can be absorbed more quickly by the micropores on the activated carbon, thereby improving the adsorption efficiency. The circular adsorption box rotates along the fixed rod, further increasing the rolling amplitude of the activated carbon, thereby promoting the activated carbon adsorption efficiency and the exhaust gas treatment efficiency.

[0011] 3. In the laboratory fume hood exhaust gas treatment equipment, the tiny particles in the exhaust gas entering the rear side of the second partition are adhered by the sprayed water, and then fall on the third partition, thereby separating the tiny particles that are difficult to be filtered by the filter plate from the exhaust gas, purifying the exhaust gas, and discharging the purified exhaust gas. The water spray box slides back and forth left and right, so that the sprayed water can cover the area behind the second partition in the treatment box, increasing the spraying area, allowing the exhaust gas to contact with water more quickly, thereby improving the efficiency of adhering tiny particles and further improving the exhaust gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention; Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the filtering structure of the present invention; Figure 4 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the filter structure part assembly of the present invention; Figure 5 It is a schematic diagram of the rear side cross-sectional three-dimensional structure of the adsorption device of the present invention; Figure 6 It is a schematic diagram of the rear side stereoscopic structure of a partial structure of the adsorption device of the present invention; Figure 7 It is a schematic diagram of the rear side cross-sectional three-dimensional structure of the dust suppression device of the present invention; Figure 8 It is a schematic diagram of the rear side cross-sectional three-dimensional structure of part of the structure of the dust suppression device of the present invention.

[0013] In the figure: 1, treatment box; 2, air inlet pipe; 3, reciprocating screw; 4, filter plate; 41, fixed card plate; 42, movable splint; 43, slide bar; 44, handle; 45, extension plate; 46, sliding baffle; 47, movable sleeve shaft; 48, limit collar; 5, adsorption device; 51, first partition; 52, circular adsorption box; 53, twisting cover; 54, feed pipe; 55, turntable; 56, fixed rod; 57, sleeve; 58, limit plate; 59, arc friction plate; 6, dust suppression device; 61 , the second partition; 62, the third partition; 63, the water inlet pipe; 64, the water hose; 65, the water spray box; 66, the nozzle; 67, the air inlet pipe; 68, the toggle rod; 681, the sliding frame; 682, the connecting block; 683, the U-shaped push rod; 684, the slide rail; 685, the T-shaped slider; 69, the circulation system; 691, the fourth partition; 692, the water storage pipe; 693, the connecting rod; 694, the friction strip; 695, the friction wheel; 696, the impeller; 697, the dosing pipe; 698, the slag discharge pipe. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-Figure 8, one embodiment of the present invention is: a laboratory fume hood exhaust gas treatment equipment, including a treatment box 1, the front side of the treatment box 1 is fixedly connected to an air inlet pipe 2, a reciprocating screw rod 3 is arranged inside the air inlet pipe 2, the upper and lower surfaces of the inner wall of the treatment box 1 are fixedly connected to fixed clamping plates 41, the inner surface of the fixed clamping plate 41 is slidably connected to a sliding rod 43, the end of the sliding rod 43 away from the fixed clamping plate 41 is fixedly connected to a movable splint 42, the side of the movable splint 42 away from the sliding rod 43 is clamped with a filter plate 4, and the two sides of the filter plate 4 are fixedly connected with handles 44, the two sides of the inner wall of the treatment box 1 are fixedly connected to extension plates 45, and the side of the extension plate 45 away from the filter plate 4 is slidably connected with a sliding baffle 46, the outer surface of the reciprocating screw rod 3 is movably connected to a movable sleeve shaft 47, and the front and rear ends of the outer surface of the movable sleeve shaft 47 are fixedly connected to a limiting collar 48, and large particles of impurities in the exhaust gas are blocked by the filter plate 4 and separated from the exhaust gas, so that the exhaust gas is initially Step filtration is convenient for subsequent processing. The movable splint 42 and the filter plate 4 vibrate to shake off the large particles of impurities on the filter plate 4 to prevent the filter plate 4 from being blocked, which is convenient for continuous filtration and improves the filtration efficiency. The processing box 1 is provided with an adsorption device 5 for adsorbing organic matter in the exhaust gas, and the processing box 1 is provided with a dust suppression device 6 for adhering fine particles in the exhaust gas. The sliding baffle 46 is slidably connected to the inner wall of the processing box 1, and a spring is provided between the fixed clamping plate 41 and the movable splint 42. A motor is installed at the front end of the reciprocating screw rod 3, and the motor is fixedly connected to the front side of the processing box 1. The filter plate 4 is fixedly connected to the outer surface of the movable sleeve shaft 47. Pushing the sliding baffle 46 to open the processing box 1 can process the large particles of impurities falling into the processing box 1, and at this time the filter plate 4 can be taken out for cleaning, so that the large particles of impurities cannot be accumulated in the processing box 1, further promoting the filtering effect of the device on the exhaust gas.

[0016] Working principle: the air inlet pipe 2 is connected to the fume hood, and the waste gas treated by the fume hood enters the treatment box 1 from the air inlet pipe 2. When the waste gas contacts the filter plate 4, the large particles of impurities in the waste gas are blocked by the filter plate 4 and separated from the waste gas, so that the waste gas is initially filtered, which is convenient for the subsequent treatment of the waste gas. The motor is started, and the motor drives the reciprocating screw rod 3 to rotate. The reciprocating screw rod 3 drives the movable sleeve shaft 47 and the limit sleeve ring 48 to move back and forth. The movable sleeve shaft 47 drives the filter plate 4 to move back and forth. The filter plate 4 drives the movable clamping plate 42 and the sliding rod 43 to move back and forth. When the movable clamping plate 42 moves back and forth, it squeezes the movable clamping plate 42. The spring between the plate 42 and the fixed clamping plate 41 causes the elasticity of the spring to vibrate the movable clamping plate 42 and the filter plate 4, thereby shaking off the large particles of impurities on the filter plate 4, preventing the filter plate 4 from being blocked, and facilitating the filter plate 4 to continuously filter the exhaust gas, thereby improving the filtration efficiency. When the device stops working, the sliding baffle 46 can be pushed to open the treatment box 1, so that the staff can process the large particles of impurities that fall into the treatment box 1, and can take out the filter plate 4 for cleaning, thereby preventing the large particles of impurities from accumulating in the treatment box 1, further promoting the device's filtering effect on the exhaust gas.

[0017] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, the adsorption device 5 includes a first partition plate 51, a circular adsorption box 52, a twisting cover 53, and a feed pipe 54. The first partition plate 51 is fixedly connected to the inner wall of the treatment box 1, the circular adsorption box 52 is arranged inside the treatment box 1, the twisting cover 53 is threadedly connected to the inner surface of the treatment box 1, and the feed pipe 54 is fixedly connected to the top surface of the treatment box 1. The organic matter in the exhaust gas is adsorbed by the activated carbon in the circular adsorption box 52, thereby avoiding the impact of the exhaust gas containing organic matter on the environment after being discharged. When the circular adsorption box 52 rotates in a circle, the activated carbon inside it rolls, thereby increasing the contact area between the activated carbon and the exhaust gas, so that the organic matter in the exhaust gas can be more quickly absorbed by the micropores on the activated carbon, thereby improving the adsorption efficiency. The adsorption device 5 also includes It includes a turntable 55, a fixed rod 56, a sleeve 57, a limit plate 58, and an arc-shaped friction plate 59. The turntable 55 is fixedly connected to the rear end of the reciprocating screw 3, the fixed rod 56 is fixedly connected to the rear side of the turntable 55, the sleeve 57 is sleeved on the outer surface of the fixed rod 56, the limit plate 58 is fixedly connected to the rear end of the fixed rod 56, the arc-shaped friction plate 59 is fixedly connected to the rear side of the first partition 51, the reciprocating screw 3 and the inner surface of the first partition 51 are rotatably connected, the sleeve 57 and the inner surface of the circular adsorption box 52 are fixedly connected, the outer surface of the circular adsorption box 52 and the inner arc surface of the arc-shaped friction plate 59 are in sliding contact, an air inlet is opened at the top of the first partition 51, and the circular adsorption box 52 rotates along the fixed rod 56, which further improves the tumbling amplitude of the activated carbon, thereby promoting the activated carbon adsorption efficiency and the exhaust gas treatment efficiency.

[0018] Working principle: the exhaust gas after preliminary filtration enters the rear side of the first partition 51 through the air inlet opened on the first partition 51. At this time, the organic matter in the exhaust gas is adsorbed by the activated carbon in the circular adsorption box 52, so as to avoid the exhaust gas containing organic matter from affecting the environment after being discharged. The reciprocating screw 3 rotates to drive the turntable 55 to rotate, and the turntable 55 drives the fixed rod 56 and the limit plate 58 to rotate in a circle. The fixed rod 56 drives the sleeve 57 to rotate in a circle, and the sleeve 57 drives the circular adsorption box 52 to rotate in a circle. When the circular adsorption box 52 rotates in a circle, the activated carbon inside it rolls, thereby increasing the contact area between the activated carbon and the exhaust gas, so that the organic matter in the exhaust gas can be more quickly absorbed by the micropores on the activated carbon, thereby improving the adsorption efficiency. When the circular adsorption box 52 rotates in a circle and contacts with the arc-shaped friction plate 59, the friction force generated causes the circular adsorption box 52 to rotate along the fixed rod 56, further increasing the rolling amplitude of the activated carbon, thereby promoting the adsorption efficiency of the activated carbon, and thus improving the exhaust gas treatment efficiency.

[0019] See also Figure 1-Figure 8On the basis of the above embodiment, in another embodiment of the present invention, the dust suppression device 6 includes a second partition 61, a third partition 62, a water inlet pipe 63, a water hose 64, a water spray box 65, a nozzle 66, and an air intake pipe 67. The second partition 61 is fixedly connected to the inner wall of the treatment box 1, the third partition 62 is fixedly connected to the rear side of the second partition 61, the water inlet pipe 63 is fixedly connected to the rear side of the treatment box 1, the bottom end of the water hose 64 is fixedly connected to the left side of the treatment box 1, the water spray box 65 is fixedly connected to the right side of the top of the water hose 64, the nozzle 66 is fixedly connected to the bottom of the water spray box 65, and the air intake pipe 67 is fixedly connected to the rear side of the second partition 61. The dust suppression device 6 also includes a toggle rod 68, a sliding frame 681, a connecting block 682, and a U-shaped push rod 6 83, slide rail 684, T-shaped slider 685, circulation system 69, toggle rod 68 is fixedly connected to the rear side of turntable 55, slide frame 681 is movably connected to the outer surface of toggle rod 68, connection block 682 is fixedly connected to the rear side of slide frame 681, U-shaped push rod 683 is fixedly connected to the rear end of connection block 682, slide rail 684 is fixedly connected to the top surface of the inner wall of treatment box 1, T-shaped slider 685 is slidably connected to the inner surface of slide rail 684, circulation system 69 is arranged at the bottom of treatment box 1, tiny particles in the exhaust gas entering the rear side of second partition plate 61 are adhered by the sprayed water, and then fall on third partition plate 62, so that tiny particles that are difficult to be filtered by filter plate 4 are separated from exhaust gas, exhaust gas is purified, and the purified exhaust gas is discharged, circulation system 6 9 includes a fourth partition 691, a water storage pipe 692, a connecting rod 693, a friction strip 694, a friction wheel 695, an impeller 696, a dosing pipe 697, and a slag discharge pipe 698. The fourth partition 691 is fixedly connected to the upper surface of the third partition 62, the water storage pipe 692 is fixedly connected to the upper surface of the third partition 62, the connecting rod 693 is fixedly connected to the bottom surface of the U-shaped push rod 683, the friction strip 694 is fixedly connected to the bottom end of the connecting rod 693, the friction wheel 695 is rotatably connected to the rear side of the bottom of the second partition 61, the impeller 696 is connected to the rear side of the friction wheel 695, the dosing pipe 697 is fixedly connected to the rear side of the processing box 1, the slag discharge pipe 698 is fixedly connected to the right side of the processing box 1, and a slide groove 1 is opened at the front end of the third partition 62. The connecting rod 693 and the slide groove 1 The inner surface is slidably connected, the top end of the water hose 64 passes through the left side of the treatment box 1 into the interior of the treatment box 1, a second slide groove is opened on the inner side of the second partition 61, the connecting block 682 is slidably connected to the inner surface of the second slide groove, the left and right sides of the water spray box 65 are in contact with the inner surface of the U-shaped push rod 683, the T-shaped slider 685 is fixedly connected to the top surface of the water spray box 65, the friction strip 694 and the friction wheel 695 are in contact with each other, a water pump is installed on the right side of the bottom end of the water hose 64, and the water pump is fixedly connected to the inner wall of the treatment box 1, and the water spray box 65 reciprocates left and right, so that the sprayed water can cover the area behind the second partition 61 in the treatment box 1, thereby increasing the spraying area and allowing the exhaust gas to contact with water more quickly, thereby improving the efficiency of adhering to tiny particles.Further improve the exhaust gas treatment efficiency.

[0020] Working principle: the exhaust gas enters the rear side of the second partition 61 from the air inlet pipe 67, and pours water into the treatment box 1 through the water inlet pipe 63. At this time, the water is blocked at the rear side of the second partition 61 and below the third partition 62. The water pump is started, and the water pump outputs the water below the third partition 62 to the water spray box 65 through the water hose 64. When the water fills the water spray box 65, the water spray box 65 sprays the water to the area behind the second partition 61 in the treatment box 1 through multiple nozzles 66, so that the tiny particles in the exhaust gas entering the rear side of the second partition 61 are sprayed. The water coming out adheres to the third partition plate 62, and then falls on the third partition plate 62, thereby separating the tiny particles that are difficult to be filtered by the filter plate 4 from the exhaust gas, purifying the exhaust gas, and discharging the purified exhaust gas. While the nozzle 66 is spraying water, the turntable 55 drives the toggle rod 68 to rotate in a circle, and the toggle rod 68 drives the sliding frame 681 to reciprocate left and right. The sliding frame 681 drives the connecting block 682 and the U-shaped push rod 683 to reciprocate left and right. The U-shaped push rod 683 then drives the water spray box 65 to slide back and forth left and right in the slide rail 684 through the T-shaped slider 685. , so that the water sprayed by the water spray box 65 can cover the area behind the second partition 61 in the treatment box 1, increasing the spraying area, so that the exhaust gas can contact with the water more quickly, thereby improving the efficiency of adhering to the tiny particles, and further improving the exhaust gas treatment efficiency. When the water falling on the third partition 62 submerges the water storage pipe 692, the water flows from the water storage pipe 692 to the bottom of the third partition 62. At this time, flocculant is added to the water through the dosing pipe 697 to separate the impurities and water and then settle to the bottom of the treatment box 1. At the same time, U The push rod 683 reciprocates left and right, driving the connecting rod 693 and the friction strip 694 to reciprocate left and right. The friction strip 694 rubs against the friction wheel 695 and drives it to rotate. The friction wheel 695 drives the impeller 696 to rotate. The impeller 696 stirs the water under the third partition 62, so that the condensed impurities are precipitated more quickly, so that the water pump can continuously send water without impurities into the spray box 65 for dust reduction, thereby improving the environmental protection of the device. When the exhaust gas treatment is completed, the impurities and sewage can be discharged through the slag discharge pipe 698.

[0021] The present invention provides a laboratory fume hood exhaust gas treatment device. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A laboratory fume hood exhaust gas treatment device, comprising a treatment box (1), characterized in that: The front side of the processing box (1) is fixedly connected to an air inlet pipe (2), a reciprocating screw rod (3) is arranged inside the air inlet pipe (2), the upper and lower surfaces of the inner wall of the processing box (1) are fixedly connected to a fixed clamping plate (41), the inner surface of the fixed clamping plate (41) is slidably connected to a sliding rod (43), one end of the sliding rod (43) away from the fixed clamping plate (41) is fixedly connected to a movable clamping plate (42), the side of the movable clamping plate (42) away from the sliding rod (43) is clamped with a filter plate (4), and the two sides of the filter plate (4) are fixedly connected to handles (44), the two sides of the inner wall of the processing box (1) are fixedly connected to extension plates (45), and the side of the extension plate (45) away from the filter plate (4) is slidably connected to a sliding baffle (46), the outer surface of the reciprocating screw rod (3) is movably connected to a movable sleeve shaft (47), and the front and rear ends of the outer surface of the movable sleeve shaft (47) are fixedly connected to limit collars (48); An adsorption device (5) for adsorbing organic matter in the exhaust gas is arranged inside the treatment box (1), and a dust suppression device (6) for adsorbing fine particles in the exhaust gas is arranged inside the treatment box (1).

2. A laboratory fume hood exhaust gas treatment equipment according to claim 1, characterized in that: The sliding baffle (46) is slidably connected to the inner wall of the processing box (1), a spring is provided between the fixed clamping plate (41) and the movable clamping plate (42), a motor is installed at the front end of the reciprocating screw (3), and the motor is fixedly connected to the front side of the processing box (1), and the filter plate (4) is fixedly connected to the outer surface of the movable sleeve shaft (47).

3. A laboratory fume hood exhaust gas treatment device according to claim 2, characterized in that: The adsorption device (5) comprises a first partition (51), a circular adsorption box (52), a twisting cover (53), and a feed pipe (54); the first partition (51) is fixedly connected to the inner wall of the processing box (1); the circular adsorption box (52) is arranged inside the processing box (1); the twisting cover (53) is threadedly connected to the inner surface of the processing box (1); and the feed pipe (54) is fixedly connected to the top surface of the processing box (1).

4. A laboratory fume hood exhaust gas treatment device according to claim 3, characterized in that: The adsorption device (5) further comprises a rotating disk (55), a fixed rod (56), a sleeve (57), a limit plate (58), and an arc-shaped friction plate (59); the rotating disk (55) is fixedly connected to the rear end of the reciprocating screw rod (3); the fixed rod (56) is fixedly connected to the rear side of the rotating disk (55); the sleeve (57) is sleeved on the outer surface of the fixed rod (56); the limit plate (58) is fixedly connected to the rear end of the fixed rod (56); and the arc-shaped friction plate (59) is fixedly connected to the rear side of the first partition plate (51).

5. A laboratory fume hood exhaust gas treatment device according to claim 4, characterized in that: The reciprocating screw rod (3) is rotatably connected to the inner surface of the first partition plate (51), the sleeve (57) is fixedly connected to the inner surface of the circular adsorption box (52), the outer surface of the circular adsorption box (52) is in sliding contact with the inner arc surface of the arc-shaped friction plate (59), and an air inlet is provided at the top of the first partition plate (51).

6. A laboratory fume hood exhaust gas treatment device according to claim 5, characterized in that: The dust suppression device (6) comprises a second partition (61), a third partition (62), a water inlet pipe (63), a water hose (64), a water spray box (65), a nozzle (66), and an air inlet pipe (67); the second partition (61) is fixedly connected to the inner wall of the treatment box (1); the third partition (62) is fixedly connected to the rear side of the second partition (61); the water inlet pipe (63) is fixedly connected to the rear side of the treatment box (1); the bottom end of the water hose (64) is fixedly connected to the left side of the treatment box (1); the water spray box (65) is fixedly connected to the right side of the top end of the water hose (64); the nozzle (66) is fixedly connected to the bottom surface of the water spray box (65); and the air inlet pipe (67) is fixedly connected to the rear side of the second partition (61).

7. A laboratory fume hood exhaust gas treatment device according to claim 6, characterized in that: The dust reduction device (6) also includes a toggle rod (68), a sliding frame (681), a connecting block (682), a U-shaped push rod (683), a slide rail (684), a T-shaped slider (685), and a circulation system (69), wherein the toggle rod (68) is fixedly connected to the rear side of the turntable (55), the slide frame (681) is movably connected to the outer surface of the toggle rod (68), the connecting block (682) is fixedly connected to the rear side of the slide frame (681), the U-shaped push rod (683) is fixedly connected to the rear end of the connecting block (682), the slide rail (684) is fixedly connected to the top surface of the inner wall of the processing box (1), and the T-shaped slider (685) is slidably connected to the inner surface of the slide rail (684).

8. The laboratory fume hood exhaust gas treatment equipment according to claim 7, characterized in that: The circulation system (69) is arranged at the bottom of the processing box (1), and comprises a fourth partition plate (691), a water storage pipe (692), a connecting rod (693), a friction strip (694), a friction wheel (695), an impeller (696), a dosing pipe (697), and a slag discharge pipe (698). The fourth partition plate (691) is fixedly connected to the upper surface of the third partition plate (62), and the water storage pipe (692) is fixedly connected to the upper surface of the third partition plate (62). The connecting rod (693) is fixedly connected to the bottom surface of the U-shaped push rod (683), the friction strip (694) is fixedly connected to the bottom end of the connecting rod (693), the friction wheel (695) is rotatably connected to the rear side of the bottom of the second partition (61), the impeller (696) is connected to the rear side of the friction wheel (695), the dosing pipe (697) is fixedly connected to the rear side of the processing box (1), and the slag discharge pipe (698) is fixedly connected to the right side of the processing box (1).

9. A laboratory fume hood exhaust gas treatment device according to claim 8, characterized in that: A first slide groove is provided at the front end of the third partition (62), and the connecting rod (693) is slidably connected to the inner surface of the first slide groove. The top end of the water supply hose (64) penetrates into the interior of the treatment box (1) from the left side surface of the treatment box (1). A second slide groove is provided on the inner side of the second partition (61), and the connecting block (682) is slidably connected to the inner surface of the second slide groove. The left and right side surfaces of the water spray box (65) are in contact with the inner surface of the U-shaped push rod (683). The T-shaped slider (685) is fixedly connected to the top surface of the water spray box (65). The friction strip (694) and the friction wheel (695) are in contact with each other. A water pump is installed on the right side of the bottom end of the water supply hose (64), and the water pump is fixedly connected to the inner wall of the treatment box (1).

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