Waste gas treatment device for biodiesel processing

Abstract

The invention relates to the technical field of filtering devices, and particularly discloses a waste gas treatment device for biodiesel processing, which comprises a box shell, the end part of a gas inlet pipe is provided with filter cloth wound on a rotating roller in a closed ring shape, the filter cloth is provided with a friction belt with ribs, and a cleaning solution is contained in the box shell; a cleaning mechanism is arranged in the box shell, the two supports are assembled in the box shell in an up-and-down moving mode, marbles for limiting the supports from moving upwards are arranged in the box shell, the movable plate is assembled in the box shell in an up-and-down moving mode, a telescopic block capable of being pushed upwards by the protruding edges is arranged in the movable plate, first elastic pieces are arranged between the movable plate and the supports, and a release plate is arranged in the box shell. An elastic piece II is arranged between the box shell and the movable plate; the two brush rollers are rotatably installed between the two supports, the brush rollers are in friction transmission with the friction belt, the shell is rotatably arranged outside the brush rollers in a sleeving mode, a spray head is arranged on the shell, and an extrusion roller is rotatably installed in the shell. The waste gas treatment device for biodiesel processing realizes on-line cleaning which can be simultaneously carried out in a filtering process and a cleaning process.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, and in particular to an exhaust gas treatment device for biodiesel processing. Background Art

[0002] Hydrocarbon-based biodiesel, also known as second-generation biodiesel or renewable diesel, is a clean energy source extracted from bio-oil through a specific process. The properties of hydrocarbon-based biodiesel are close to those of traditional petroleum-based diesel. It can directly replace or be mixed with petroleum-based diesel to reduce dependence on petroleum-based diesel, reduce greenhouse gas emissions, and combat climate change. In the process of producing hydrocarbon-based biodiesel, a large amount of waste gas is generated, which contains grease droplets, sulfides, nitrogen compounds, smoke, etc. If these substances are directly discharged into the atmosphere without treatment, they will have a serious impact on air quality. When treating the generated waste gas, it is usually necessary to filter it through a filter cloth first to effectively capture solid particles in the waste gas, such as dust, grease droplets, etc., to reduce the risk of subsequent processing equipment being blocked by particles.

[0003] A Chinese patent document with authorization announcement number CN117282189B discloses a self-cleaning filter for waste gas containing grease particles. The filter layer of the self-cleaning filter is provided with several layers, which can filter the particles in the grease-containing chemical waste gas in a graded manner, reducing the frequency of clogging of the filter layer, and thereby reducing the frequency of cleaning the filter layer. The flushing device can flush the filter layer, and the alkali solution delivery pipeline can spray hot alkali solution onto the filter layer to dissolve the grease. The purge pipeline can purge the filter layer by compressed air to make the particles fall from the filter layer, thereby realizing online cleaning of the filter layer, and the cleaning operation is convenient.

[0004] However, in the prior art, during the self-cleaning process of the above-mentioned self-cleaning filter applied to waste gas containing oily particles, the hot alkaline liquid or compressed gas sprayed from the nozzle to the filter layer is easily affected by the exhaust gas flow, and it is difficult to directly act on the filter layer. The cleaning effect is not as thorough as offline cleaning. At the same time, the filtering process of the exhaust gas will also be affected by the hot alkaline liquid or compressed gas sprayed from the nozzle, resulting in reduced filtration efficiency, making it difficult to achieve the filtering process and the cleaning process at the same time. Summary of the invention

[0005] The present invention provides an exhaust gas treatment device for biodiesel processing, aiming to solve the problem that it is difficult to realize the filtering process and the cleaning process simultaneously in the self-cleaning filter applied to the exhaust gas containing grease particles in the related art.

[0006] The present invention provides a biodiesel processing waste gas treatment device using the following technical solutions: A waste gas treatment device for biodiesel processing, comprising a box shell with an air inlet pipe and an air outlet pipe, a filter cloth and a cleaning mechanism are arranged in the box shell, and a cleaning solution covering the lower end of the filter cloth is contained, the filter cloth is wound around a rotating roller in a closed ring shape and circulates under the drive of the rotating roller, the front and rear ends of the filter cloth are provided with friction belts, and the left and right sides of the friction belt are symmetrically distributed with ridges; the cleaning mechanism comprises a bracket, a moving plate, a brush roller and a shell, two brackets are arranged front and back and are assembled in the box shell for movement up and down, a marble for limiting the upward movement of the bracket is arranged in the box shell, and the moving plate is provided to limit the upward movement of the bracket. The plate corresponds to each bracket and is assembled in the box shell for movement up and down. The movable plate is provided with a telescopic block that can be pushed up by the convex ridge. An elastic member 1 is provided between the movable plate and the bracket. A release plate located above the movable plate is provided in the box shell to push the telescopic block so that the convex ridge passes over the telescopic block. An elastic member 2 is provided between the box shell and the movable plate. Two brush rollers are rotatably installed between the two brackets and are symmetrically arranged on the left and right sides of the filter cloth. Each brush roller is frictionally transmitted with the friction belt. The outer shell is rotatably sleeved outside each brush roller. A nozzle is provided on the outer shell, and an extrusion roller is rotatably installed in the outer shell.

[0007] By adopting the above technical scheme, the waste gas treatment device for biodiesel processing is provided with an annular filter cloth and a cleaning mechanism, a double-layer filter layer is formed between the upper end and the lower end of the annular filter cloth to filter the waste gas entering the box shell, and the structure of the double-layer filter layer can provide a better filtering effect; and the marbles can limit the upward movement of the bracket, so that the friction belt drives the brush roller to rotate in the cleaning solution through friction transmission, so that the brush roller cooperates with the cleaning solution to perform preliminary brushing on the filter cloth; the convex ridges on the friction belt can also drive the bracket and the brush roller to move upward through the telescopic block and the movable plate, so that the brush roller cooperates with the clean water sprayed by the nozzle to perform secondary brushing on the filter cloth, After the release plate pushes the telescopic block, the ridge can be separated from the telescopic block, so that the movable plate drives the bracket and the brush roller to move downward under the action of the elastic member 2, thereby allowing the squeezing roller to squeeze and dehydrate the filter cloth; in this way, the cleaning mechanism realizes the initial brushing, secondary brushing and squeezing and dehydrating of the filter cloth, which can directly act on the filter layer, achieve deep cleaning, improve the cleaning effect, and do not affect the filtering process of the filter cloth on the exhaust gas while cleaning. The circulating motion of the filter cloth can keep the filter cloth clean, effectively maintain the efficiency of the filtration system, prevent the filter material from being blocked, and realize online cleaning in which the filtering process and the cleaning process can be carried out simultaneously.

[0008] Furthermore, a transmission wheel in contact with the friction belt is respectively arranged at the front and rear ends of each brush roller, and a plurality of friction edges are distributed on the outer peripheral side of the transmission wheel.

[0009] By adopting the above technical solution, the friction belt can drive the transmission wheel and the brush roller to rotate through friction force, and the friction edge is used to increase the friction force between the friction belt and the transmission wheel.

[0010] Furthermore, a convex disc rotatably mounted outside the brush roller is fixed to the front and rear ends of each of the shells, and the convex disc contacts the transmission wheel on the side facing the transmission wheel, so that when the transmission wheel rotates, the convex disc can be driven to rotate around the axis of the transmission wheel through friction.

[0011] Furthermore, a pin sleeve is fixed to the front and rear ends of one of the shells, and a limit pin that can be inserted into the pin sleeve is fixed to the front and rear ends of the other shell, a spring 1 is arranged between each pin sleeve and the corresponding limit pin, and a toggle rod is assembled at the open end of each pin sleeve for upward and downward movement, a locking block that can extend into the pin sleeve to prevent the limit pin from being inserted into the pin sleeve is fixed on the toggle rod, and a spring 2 is arranged between the toggle rod and the pin sleeve.

[0012] Furthermore, an unlocking plate is fixed to the lower surface of each movable plate, and the unlocking plate is used to push the toggle rod to make the locking block extend out of the pin sleeve.

[0013] Furthermore, each of the shells is provided with a side opening on the side facing the filter cloth.

[0014] By adopting the above technical solution, the dirt scrubbed by the brush roller can enter the housing through the side opening, thereby preventing the scrubbed dirt from adhering to the filter cloth again and causing secondary pollution.

[0015] Furthermore, a sealing plate is fixed to the end of the air intake pipe extending into the box shell, and the two sealing plates are respectively sealed at the openings at the front and rear ends of the filter cloth, an upper fixing plate is fixed on the sealing plate, and the release plate is fixed on the lower surface of the upper fixing plate, and a lower fixing seat is fixed to the inner bottom surface of the box shell, and the pin is arranged on the lower fixing seat, and the second elastic member is arranged between the lower fixing seat and the movable plate.

[0016] The above technical solution is adopted to prevent the exhaust gas from overflowing from the openings at the front and rear ends of the filter cloth, ensuring that the exhaust gas enters the box shell after passing through the double-layer filter layer, thereby ensuring the filtering effect.

[0017] Furthermore, each of the brackets includes a crossbar and two support shafts, the crossbar is fixed between the two support shafts, the support shafts are used to install the brush roller, and the lower surface of the ball can be against the upper surface of the crossbar to limit the upward movement of the crossbar.

[0018] Furthermore, the end of the air intake pipe extending into the box shell is fixed with pressure rods arranged in pairs and distributed up and down, each of the pressure rods extends forward and backward, and forms a limiting groove for passing the filter cloth between the pressure rods and the end surface of the air intake pipe.

[0019] The above technical solution is used to keep the portion of the filter cloth close to the end face of the intake pipe flat and with appropriate tension, so as to evenly capture particulate matter and pollutants, reduce filtering blind spots, and ensure that the exhaust gas can be effectively purified when passing through the filter cloth.

[0020] Furthermore, the two air inlet pipes are symmetrically arranged on the left and right sides of the box shell, and the two cleaning mechanisms are symmetrically arranged on the left and right sides of the box shell to clean the filter cloth on the corresponding sides.

[0021] The beneficial effects of the waste gas treatment device for biodiesel processing provided by the present invention are as follows: the waste gas treatment device for biodiesel processing is provided with an annular filter cloth and a cleaning mechanism, a double-layer filter layer is formed between the upper end and the lower end of the annular filter cloth to filter the waste gas entering the box shell, and the structure of the double-layer filter layer can provide a better filtering effect; and the marbles can limit the upward movement of the bracket, so that the friction belt drives the brush roller to rotate in the cleaning solution through friction transmission, so that the brush roller cooperates with the cleaning solution to perform preliminary brushing on the filter cloth; the convex ridges on the friction belt can also drive the bracket and the brush roller to move upward through the telescopic block and the movable plate, so that the brush roller cooperates with the clean water sprayed by the nozzle The filter cloth is brushed for the second time. After the release plate pushes the telescopic block, the convex ridge can be separated from the telescopic block, so that the movable plate drives the bracket and the brush roller to move downward under the action of the elastic member 2, thereby allowing the squeezing roller to squeeze and dehydrate the filter cloth. In this way, the cleaning mechanism realizes the initial brushing, secondary brushing and squeezing and dehydrating of the filter cloth, which can directly act on the filter layer to achieve deep cleaning, improve the cleaning effect, and does not affect the filtering process of the filter cloth on the exhaust gas while cleaning. The circulating motion of the filter cloth can keep the filter cloth clean, effectively maintain the efficiency of the filtration system, prevent the filter material from being blocked, and realize online cleaning in which the filtering process and the cleaning process can be carried out simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a first structural schematic diagram of the waste gas treatment device for biodiesel processing of the present invention.

[0023] Figure 2 It is a second structural schematic diagram of the waste gas treatment device for biodiesel processing of the present invention.

[0024] Figure 3 It is a third structural schematic diagram of the waste gas treatment device for biodiesel processing of the present invention.

[0025] Figure 4 It is a first structural schematic diagram of the cleaning mechanism of the waste gas treatment device for biodiesel processing of the present invention.

[0026] Figure 5 It is a second structural schematic diagram of the cleaning mechanism of the waste gas treatment device for biodiesel processing of the present invention.

[0027] Figure 6 It is a schematic structural diagram of a brush roller of a waste gas treatment device for biodiesel processing of the present invention.

[0028] Figure 7It is a schematic structural diagram of a limit pin and a pin sleeve of a waste gas treatment device for biodiesel processing of the present invention.

[0029] Figure 8 It is a schematic structural diagram of the shell of the waste gas treatment device for biodiesel processing of the present invention.

[0030] Reference numerals: 10, box shell; 110, air inlet pipe; 111, pressure rod; 120, air outlet pipe; 130, liquid level; 140, sealing plate; 150, upper fixing plate; 151, release plate; 160, lower fixing seat; 161, marble; 162, elastic member 2; 170, sealing shell; 20, filter cloth; 210, driving roller; 220, guide roller; 230, friction belt; 231, convex ridge; 30, bracket; 310, cross bar; 3 20. Support shaft; 40. Moving plate; 410. Telescopic block; 411. Spring three; 420. Elastic member one; 430. Unlocking plate; 50. Transmission wheel; 510. Friction edge; 60. Housing; 620. Spray head; 630. Convex disc; 640. Support rod; 70. Brush roller; 710. Brush; 80. Extrusion roller; 90. Pin sleeve; 910. Limit pin; 920. Spring one; 930. Locking block; 940. Toggle rod. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] Combine the following Figures 1 to 8 The exhaust gas treatment apparatus for biodiesel processing of the present invention is described.

[0033] like Figure 2 As shown, an embodiment of the waste gas treatment device for biodiesel processing of the present invention includes a housing 10, a rotating roller, a filter cloth 20 and a cleaning mechanism.

[0034] like Figures 1 to 3 As shown, the box shell 10 is in the shape of a rectangular parallelepiped and has an air inlet pipe 110 and an air outlet pipe 120. The air inlet pipe 110 is a square tube for introducing exhaust gas into the box shell 10. The two air inlet pipes 110 are symmetrically arranged on the left and right sides of the box shell 10. The air outlet pipe 120 is a round tube for discharging the exhaust gas in the box shell 10. The air outlet pipe 120 is arranged at the upper end of the box shell 10. A cleaning solution is contained in the box shell 10. The cleaning solution is an alkaline cleaning agent such as sodium hydroxide solution and sodium carbonate solution, which can dissolve oil stains and soften impurities, making it easier to remove oil stains and impurities.

[0035] like Figure 2 and Figure 3As shown, two pairs of rollers are symmetrically arranged on the left and right sides of the box shell 10, and are located at the ends of each air inlet pipe 110 extending into the box shell 10. The paired rollers are divided into a driving roller 210 and a guide roller 220 located directly below the driving roller 210. The driving roller 210 and the guide roller 220 are respectively rotatably installed in the box shell 10, and the filter cloth 20 is wound around the driving roller 210 and the guide roller 220 in a closed ring shape. A double-layer filter layer is formed between the upper end and the lower end of the filter cloth 20, which is used to filter the exhaust gas passing into the box shell 10, so that grease droplets, smoke and dust in the exhaust gas are trapped on each filter layer. The structure of the double-layer filter layer can provide a better filtering effect. The driving roller 210 is connected to the output end of the motor to rotate under the drive of the motor, thereby driving the filter cloth 20 to circulate. Among them, the driving roller 210 located on the left side of the box shell 10 rotates counterclockwise to make the filter cloth 20 located on the left side of the box shell 10 circulate counterclockwise, and the driving roller 210 located on the right side of the box shell 10 rotates clockwise to make the filter cloth 20 located on the right side of the box shell 10 circulate clockwise.

[0036] like Figures 2 to 4 As shown, the end of each air inlet pipe 110 extending into the box shell 10 is fixed with a pair of pressure rods 111 arranged up and down, each pressure rod 111 extends forward and backward, and forms a limit groove for passing the filter cloth 20 between the end face of the air inlet pipe 110, which is used to keep the part of the filter cloth 20 close to the end face of the air inlet pipe 110 flat and with appropriate tension, so as to evenly capture particulate matter and pollutants, reduce the blind spot of filtering, and ensure that the exhaust gas can be effectively purified when passing through the filter cloth 20. The end of each air inlet pipe 110 extending into the box shell 10 is fixed with a pair of sealing plates 140 arranged up and down, and the two sealing plates 140 are respectively sealed at the openings at the front and back ends of the filter cloth 20 to prevent the exhaust gas from overflowing from the openings at the front and back ends of the filter cloth 20, and ensure that the exhaust gas passes through the double-layer filter layer before entering the box shell 10, so as to ensure the filtering effect. An upper fixing plate 150 and a sealing shell 170 are fixed to each sealing plate 140, a release plate 151 is fixed to the lower surface of the upper fixing plate 150, and the sealing shell 170 is used to accommodate the cleaning mechanism and cooperate with the sealing plate 140 to seal the opening of the filter cloth 20. A lower fixing seat 160 located directly below the upper fixing plate 150 is fixed to the inner bottom surface of the box shell 10, and a pin 161 is provided on the lower fixing seat 160.

[0037] like Figures 3 to 5 As shown, each filter cloth 20 has a friction belt 230 at both ends, and ridges 231 are symmetrically distributed on the left and right sides of the friction belt 230. The ridges 231 are evenly distributed along the circumference of the filter cloth 20, and the cleaning solution covers the lower end of the filter cloth 20.

[0038] like Figure 2As shown, the two cleaning mechanisms are symmetrically arranged on the left and right sides of the box shell 10, and the filter cloth 20 on the corresponding side is close to the lower end position in the box shell 10 to clean the filter cloth 20. The subsequent description of the cleaning mechanism only takes the left side as an example.

[0039] like Figure 4 and Figure 6 As shown, the cleaning mechanism includes a bracket 30, a movable plate 40, a brush roller 70 and a housing 60. Two brackets 30 are arranged front and back and move up and down and are assembled between the upper fixed plate 150 and the lower fixed seat 160. Each bracket 30 includes a cross bar 310 and two support shafts 320, the cross bar 310 is fixed between the two support shafts 320, the lower surface of the ball 161 can be against the upper surface of the cross bar 310 to limit the upward movement of the cross bar 310, and the support shaft 320 is used to install the brush roller 70.

[0040] like Figure 4 and Figure 5 As shown, the movable plate 40 corresponds to each bracket 30 and is assembled between the upper fixed plate 150 and the cross bar 310 in an up-and-down manner. Each movable plate 40 has a middle groove for the friction belt 230 to pass through, and the left and right inner walls of the middle groove are symmetrically provided with mounting grooves. A telescopic block 410 that can be pushed up by the convex rib 231 is assembled in each mounting groove and can be moved left and right. A spring 411 is provided between the telescopic block 410 and the mounting groove to apply elastic force to the telescopic block 410 so that the telescopic block 410 extends out of the mounting groove and can be pushed up by the convex rib 231. The upper surface of each telescopic block 410 has an inclined surface that tilts downward from the mounting groove to the middle groove. The movable plate 40 is provided with a through groove that is connected to the mounting groove above each mounting groove. When the telescopic block 410 is pushed upward by the convex rib 231 and drives the movable plate 40 to move upward to the upper fixed plate 150, the release plate 151 can be inserted into the through groove to push against the inclined surface of the upper surface of the telescopic block 410, so that the telescopic block 410 extends into the installation groove, so that the convex rib 231 is disengaged from the telescopic block 410, and the convex rib 231 passes over the telescopic block 410. An unlocking plate 430 is fixed to the lower surface of each movable plate 40. An elastic member 1 420 is provided between the movable plate 40 and the cross bar 310 to apply an elastic force to the bracket 30 to move the bracket 30 upward, and the elastic member 1 420 is an elastic telescopic rod. An elastic member 2 162 is provided between the movable plate 40 and the lower fixed seat 160 to apply an elastic force to the movable plate 40 to move the movable plate 40 downward, and the elastic member 2 162 is an elastic telescopic rod.

[0041] like Figure 2 , Figure 4 and Figure 6As shown, two brush rollers 70 are rotatably mounted between the support shafts 320 of the two brackets 30 and symmetrically arranged on the left and right sides of the filter cloth 20. Each brush roller 70 is provided with a brush 710 for brushing the left and right sides of the filter cloth 20. The brush 710 can physically remove particulate matter, oil stains and other pollutants on the filter cloth 20 with a cleaning solution or clean water, thereby improving the cleaning effect of the filter cloth 20. The front and rear ends of each brush roller 70 are respectively fixed with a transmission wheel 50 in contact with the friction belt 230, so that the friction belt 230 can drive the transmission wheel 50 and the brush roller 70 to rotate through friction. The outer peripheral side of the transmission wheel 50 is distributed with a plurality of friction edges 510 for increasing the friction between the friction belt 230 and the transmission wheel 50.

[0042] like Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the housing 60 corresponds to each brush roller 70 and is rotatably mounted outside each brush roller 70. The front and rear ends of each housing 60 are respectively fixed with a convex disc 630 rotatably mounted outside the brush roller 70. The convex disc 630 contacts the transmission wheel 50 toward the side of the transmission wheel 50, so that when the transmission wheel 50 rotates, the convex disc 630 and the housing 60 can be driven to rotate around the axis of the transmission wheel 50 by friction. Each housing 60 is provided with a side opening facing the filter cloth 20, so that the dirt scrubbed by the brush roller 70 can enter the housing 60 through the side opening, so as to prevent the scrubbed dirt from adhering to the filter cloth 20 again and causing secondary pollution. The housing 60 is provided with a plurality of nozzles 620 facing the filter cloth 20, which are used to spray clean water on the filter cloth 20 to cooperate with the brush roller 70 to scrub the filter cloth 20 for the second time, so as to completely remove the residual dirt and cleaning solution, and further improve the cleaning effect. A squeezing roller 80 is rotatably mounted between the protruding parts of the two front and rear facing protruding plates 630 . An opening is provided at the lower end of the outer shell 60 . The squeezing roller 80 partially extends out of the outer shell 60 through the opening to squeeze and dehydrate the filter cloth 20 .

[0043] like Figures 4 to 7As shown, the protruding portion of the convex disc 630 on the left side is fixed with a pin sleeve 90 through a support rod 640, and the protruding portion of the convex disc 630 on the right side is fixed with a stop pin 910 that can be inserted into the pin sleeve 90 through the support rod 640. A spring 1 920 is arranged between each pin sleeve 90 and the corresponding stop pin 910 to apply elastic force to the stop pin 910 so that the stop pin 910 extends out of the pin sleeve 90, so that the protruding portions of the two convex discs 630 are kept away from each other, even if the squeezing roller 80 and the filter cloth 20 are kept separated. The open end of each pin sleeve 90 is equipped with a toggle rod 940 for upward and downward movement. The toggle rod 940 is fixed with a lock block 930 that can extend into the pin sleeve 90 to block the stop pin 910 from inserting into the pin sleeve 90. A spring 2 is arranged between the toggle rod 940 and the pin sleeve 90 to apply elastic force to the toggle rod 940 so that the lock block 930 extends into the pin sleeve 90. When the telescopic block 410 is pushed upward by the convex ridge 231 and drives the movable plate 40 to move upward to the upper fixed plate 150 , the unlocking plate 430 can push against the toggle rod 940 to make the locking block 930 extend from the pin sleeve 90 , thereby releasing the locking block 930 from limiting the limit pin 910 .

[0044] Taking the left intake pipe 110, filter cloth 20 and cleaning mechanism as an example, the working process of the embodiment of the waste gas treatment device for biodiesel processing of the present invention includes the following steps: The first step is soaking and scrubbing. The driving roller 210 drives the filter cloth 20 to move counterclockwise, that is, the filter cloth 20 at the cleaning mechanism moves upward, and the cleaning solution passes through the lower end of the filter cloth 20. The cleaning solution dissolves the oil stains and softens the impurities on the filter cloth 20. The ridges 231 on both sides of the friction belt 230 push the telescopic block 410 upward, so that the telescopic block 410 drives the movable plate 40 to move upward, and the upper surface of the cross bar 310 is resisted by the lower surface of the marble 161 and remains motionless, so that the brush roller 70 is located below the liquid level 130 of the cleaning solution. The elastic member 420 is stretched and stores energy. The friction belt 230 drives the lower ends of the transmission wheels 50 on the left and right sides to rotate inward by friction, and the transmission wheel 50 drives the brush roller 70 to rotate around its own axis. The brush 710 on the brush roller 70 cooperates with the cleaning solution to physically remove the particulate matter, oil stains and other pollutants on the filter cloth 20, and scrubs the front and back sides of the filter cloth 20.

[0045] The second step is flushing and brushing. When the movable plate 40 moves up to approach the upper fixed plate 150, the cross bar 310 passes over the marble 161, and the energy stored in the elastic member 420 is released. The bracket 30 moves up quickly to drive the brush roller 70 to leave the cleaning solution. The elastic member 162 is stretched and stores energy, and the upward speed of the bracket 30 is greater than the movement speed of the filter cloth 20. The lower ends of the transmission wheels 50 on the left and right sides of the friction belt 230 rotate outward, and the transmission wheel 50 drives the brush roller 70 to rotate around its own axis. At the same time, the nozzle 620 on the outer shell 60 sprays clean water to the filter cloth 20, and cooperates with the brush roller 70 to brush the filter cloth 20 for a second time to completely remove residual dirt and cleaning solution.

[0046] The third step is extrusion dehydration. When the movable plate 40 moves up to the upper fixed plate 150, the release plate 151 is inserted into the through groove to push against the inclined surface of the upper surface of the telescopic block 410, so that the telescopic block 410 extends into the installation groove, so that the convex ridge 231 is disengaged from the telescopic block 410, and the convex ridge 231 passes over the telescopic block 410. At the same time, the unlocking plate 430 pushes against the toggle rod 940 to make the locking block 930 extend from the pin sleeve 90, and the locking block 930 is released from the limit pin 910. At this time, the energy stored in the elastic member 162 is released, and the movable plate 40 drives the bracket 30 and the transmission wheel 50 to move downward, and the lower ends of the transmission wheels 50 on the left and right sides of the friction belt 230 rotate inwardly. The transmission wheel 50 drives the lower end of the convex plate 630 to rotate inwardly through the friction force, so that the two squeezing rollers 80 approach each other to squeeze and dehydrate the filter cloth 20.

[0047] In this way, the cleaning mechanism can perform preliminary brushing, secondary brushing and extrusion dehydration on the filter cloth 20, directly act on the filter layer, achieve deep cleaning, improve the cleaning effect, and do not affect the filtering process of the filter cloth 20 on the exhaust gas during cleaning. The circulating motion of the filter cloth 20 can keep the filter cloth 20 clean, effectively maintain the efficiency of the filtration system, prevent filter material clogging, and realize online cleaning in which the filtering process and the cleaning process can be carried out simultaneously.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A waste gas treatment device for biodiesel processing, comprising a housing (10) having an air inlet pipe (110) and an air outlet pipe (120), characterized in that: A filter cloth (20) and a cleaning mechanism are arranged in the box shell (10), and a cleaning solution covering the lower end of the filter cloth (20) is contained therein. The filter cloth (20) is wound around a rotating roller in a closed loop and moves in a circular motion under the drive of the rotating roller. The filter cloth (20) has friction belts (230) at the front and rear ends, and ridges (231) are symmetrically distributed on the left and right sides of the friction belt (230). The cleaning mechanism comprises a bracket (30), a movable plate (40), a brush roller (70) and a shell (60). The two brackets (30) are arranged in front and back and are assembled in the box shell (10) for vertical movement. A pin (161) for limiting the upward movement of the brackets (30) is arranged in the box shell (10). The movable plate (40) corresponds to each bracket (30) and is assembled in the box shell (10) for vertical movement. The movable plate (40) is provided with a brush that can be moved by the brackets (30). A telescopic block (410) is pushed upward by the convex ridge (231); an elastic member (420) is provided between the movable plate (40) and the bracket (30); a release plate (151) is provided inside the box shell (10) and is located above the movable plate (40) to push the telescopic block (410) so that the convex ridge (231) passes over the telescopic block (410); an elastic member (162) is provided between the box shell (10) and the movable plate (40); two brush rollers (70) are rotatably mounted between the two brackets (30) and are symmetrically arranged on the left and right sides of the filter cloth (20); each brush roller (70) is frictionally driven with the friction belt (230); an outer shell (60) is rotatably sleeved outside each brush roller (70); a nozzle (620) is provided on the outer shell (60); and a squeezing roller (80) is rotatably mounted inside the outer shell (60).

2. A biodiesel processing waste gas treatment device according to claim 1, characterized in that: A transmission wheel (50) in contact with the friction belt (230) is respectively provided at the front and rear ends of each brush roller (70), and a plurality of friction edges (510) are distributed on the outer peripheral side of the transmission wheel (50).

3. A biodiesel processing waste gas treatment device according to claim 2, characterized in that: A convex disc (630) rotatably sleeved outside the brush roller (70) is fixed to the front and rear ends of each of the housings (60), and the convex disc (630) contacts the drive wheel (50) facing the side of the drive wheel (50), so that when the drive wheel (50) rotates, the convex disc (630) can be driven to rotate around the axis of the drive wheel (50) by friction force.

4. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: A pin sleeve (90) is fixed to the front and rear ends of one of the housings (60), and a limit pin (910) capable of being inserted into the pin sleeve (90) is fixed to the front and rear ends of the other housing (60). A spring 1 (920) is provided between each of the pin sleeves (90) and the corresponding limit pin (910). A toggle rod (940) is mounted on the open end of each of the pin sleeves (90) for upward and downward movement. A locking block (930) capable of extending into the pin sleeve (90) to prevent the limit pin (910) from being inserted into the pin sleeve (90) is fixed to the toggle rod (940). A spring 2 is provided between the toggle rod (940) and the pin sleeve (90).

5. The waste gas treatment device for biodiesel processing according to claim 4, characterized in that: An unlocking plate (430) is fixed to the lower surface of each movable plate (40), and the unlocking plate (430) is used to push against the toggle rod (940) so that the locking block (930) extends out from the pin sleeve (90).

6. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: Each of the outer shells (60) is provided with a side opening on a side facing the filter cloth (20).

7. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: A sealing plate (140) is fixed to the end of the air inlet pipe (110) extending into the box shell (10); the two sealing plates (140) are respectively sealed at the openings at the front and rear ends of the filter cloth (20); an upper fixing plate (150) is fixed to the sealing plate (140); the release plate (151) is fixed to the lower surface of the upper fixing plate (150); a lower fixing seat (160) is fixed to the inner bottom surface of the box shell (10); the pin (161) is arranged on the lower fixing seat (160); and the second elastic member (162) is arranged between the lower fixing seat (160) and the movable plate (40).

8. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: Each of the brackets (30) comprises a crossbar (310) and two support shafts (320); the crossbar (310) is fixed between the two support shafts (320); the support shafts (320) are used to mount the brush roller (70); and the lower surface of the ball (161) can abut against the upper surface of the crossbar (310) to limit the upward movement of the crossbar (310).

9. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: The end of the air intake pipe (110) extending into the box shell (10) is fixed with pressure rods (111) arranged in pairs and distributed up and down, each of the pressure rods (111) extends forward and backward, and forms a limiting groove for passing the filter cloth (20) between the pressure rods and the end surface of the air intake pipe (110).

10. The waste gas treatment device for biodiesel processing according to claim 1, characterized in that: The two air inlet pipes (110) are symmetrically arranged on the left and right sides of the box shell (10), and the two cleaning mechanisms are symmetrically arranged on the left and right sides of the box shell (10) to clean the filter cloth (20) on the corresponding sides.

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