A waste gas treatment equipment for stearic acid production

Abstract

The present invention relates to the technical field of stearic acid production, and discloses a waste gas treatment device for stearic acid production, including a rotary filtering mechanism, a jet flushing mechanism and a rotary driving mechanism. The waste gas treatment device for stearic acid production, using the same component, can not only achieve the driving effect of waste gas, but also achieve the kinetic energy required for cleaning debris, thereby effectively improving the effective utilization rate of kinetic energy. In addition, when cleaning debris, it relies on the high-pressure flushing ability of the liquid and the centrifugal force of the debris itself when rotating to perform dredging work, and has the characteristics of large action force and reasonable action direction, so that the debris can be dredged and cleaned to the maximum extent, and at the same time, the normal filtration area of ​​the filter hole can be guaranteed to ensure the normal filtration efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of stearic acid production, in particular to waste gas treatment equipment for stearic acid production. Background Art

[0002] Stearic acid, also known as octadecanoic acid, is produced by the hydrolysis of oils and fats and is primarily used to produce stearate. The waste gas generated during stearic acid production is a volatile organic waste gas and also a malodorous gas. Its composition is complex, its concentration is high, its concentration fluctuates greatly, and its odor concentration is high. Long-term exposure to this gas environment can seriously affect people's physical and mental health, so the waste gas needs to be treated before it can be discharged into the environment. Currently, stearic acid waste gas treatment devices on the market primarily purify waste gas through adsorption filtration, which has low waste gas treatment efficiency and unstable effects. Furthermore, the complex composition of the waste gas can easily lead to clogging of the waste gas treatment device, which is not conducive to improving economic and environmental benefits.

[0003] To this end, Chinese patent publication number "CN115957578A" discloses "A Waste Gas Treatment Device for Stearic Acid Production." Its main structure includes a treatment box with a filter plate installed inside. A rotating mechanism is provided on the side of the filter plate near the intake pipe for rubbing the end face of the filter plate. A telescopic mechanism is provided on the side of the filter plate near the exhaust pipe for scraping the filter holes. A collection pipe is connected to the bottom of the treatment box near the intake pipe, which is then connected to a filter box. A circulating spray mechanism is provided between the filter box and the diversion chamber. This waste gas treatment device for stearic acid production achieves rapid filtration of particulate matter contained in the waste gas by installing a filter plate inside the filter box and cooperating with the rotating mechanism. This prevents clogging of the filter plate during filtration, further improving filtration quality. Furthermore, the cooperation of the filter box and the circulating spray mechanism ensures that a neutralizing liquid continuously flows through the filter plate, significantly improving the treatment quality of the entire waste gas treatment device.

[0004] From the original text, we can understand that the waste gas treatment equipment for stearic acid production uses a scraping column to move back and forth along the inside of the filter hole to clean the debris on the surface of the filter plate, and cooperates with the reaction liquid in an atomized state to neutralize the waste gas. However, since the scraping column can only scrape along the end face of the filter plate, it will cause the accumulated debris to enter the filter hole along the filter hole port and form a blockage. In addition, since the atomizing shell will converge and adhere to the inner surface of the filter hole during the flow process, the effective filtration area of ​​the filter hole during operation is seriously reduced, resulting in low filtration efficiency of the equipment. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a waste gas treatment device for stearic acid production. By utilizing the same component, it can achieve both the driving effect of the waste gas and the kinetic energy required for cleaning debris, thereby effectively improving the effective utilization rate of kinetic energy. In addition, when cleaning debris, it relies on the high-pressure flushing ability of the liquid and the centrifugal force of the debris itself during rotation to perform the dredging work. It has the characteristics of large action force and reasonable action direction, so that the debris can be dredged and cleaned to the maximum extent, while ensuring the normal filtration area of ​​the filter holes to ensure the normal filtration efficiency of the equipment, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste gas treatment equipment for stearic acid production, comprising a vertical cylinder with support legs installed at the bottom, a filter cavity arranged inside the vertical cylinder and open at the top, a conical raised platform arranged at the bottom end of the filter cavity, a central limiting plate fixed to the center of the top of the filter cavity by multiple horizontal fixing rods, a waste gas discharge port formed by the area between every two adjacent horizontal fixing rods, a No. 1 shaft fixing hole arranged at the center of the central limiting plate, a trumpet-shaped air guide cover arranged at the bottom end of the vertical cylinder, a No. 1 gas flow cavity arranged inside the conical raised platform and open at the top, a No. 2 gas flow cavity arranged inside the trumpet-shaped air guide cover and connected to the No. 1 gas flow cavity at the top, and a waste liquid discharge channel arranged at the edge of the bottom end of the vertical cylinder and connected to the bottom end of the filter cavity, and also includes a rotary Dynamic filtering mechanism, the rotary filtering mechanism is provided with a conical filter disc located inside the filter cavity and capable of rotating, and capable of filtering the flowing gas; the jet flushing mechanism, the jet flushing mechanism is provided with a longitudinal hollow shell fixedly mounted on the bottom of the central limiting plate and capable of allowing the liquid to flow along the inside of the structure, and an oblique hollow shell obliquely arranged on the periphery of the bottom of the longitudinal hollow shell and capable of allowing the liquid to be sprayed toward the conical filter disc; and a rotary driving mechanism, the rotary driving mechanism is provided with a lower rotating shaft and an upper rotating shaft located inside the filter cavity and capable of rotating with an external driving device, a fan blade that rotates with the lower rotating shaft and can cause the surrounding gas to flow upward when rotating, and a spiral impeller that rotates with the upper rotating shaft and can cause the liquid located inside the longitudinal hollow shell to flow longitudinally when rotating.

[0007] Preferably, the rotary filter mechanism includes a fixing ring and a conical filter disc fixedly mounted inside the top of the filter cavity, the inner circumferential surface of the fixing ring is provided with an annular protrusion structure integral with it, the inner circumferential surface of the annular protrusion structure is provided with an annular limit groove formed by being recessed outward, the top of the conical filter disc is provided with an upper rotation limit ring integral with it and capable of rotating inside the annular limit groove, the bottom end of the conical filter disc is provided with a lower rotation limit ring integral with it, the upper recessed portion of the conical filter disc constitutes a conical cavity, the center of the lower rotation limit ring is fixedly mounted with an annular fixing sleeve, the center of the annular fixing sleeve is provided with a No. 2 shaft fixing hole, and a plurality of filter holes for filtering gas are provided at the conical circumferential wall thickness of the conical filter disc.

[0008] Preferably, the structural radius of the top end of the conical filter disc is larger than the structural radius of the bottom end thereof, and the structural dimensions of the upper rotation limiting ring match the structural dimensions of the annular limiting groove.

[0009] Preferably, the filter hole forms an angle of forty-five degrees with the axis of the conical filter disc.

[0010] Preferably, the jet flushing mechanism includes a longitudinal hollow shell, the upper end face of the longitudinal hollow shell is provided with an upper fixing plate which is integrally formed with the longitudinal hollow shell and fixedly mounted on the bottom surface of the center limit plate, the center of the upper end face of the longitudinal hollow shell is provided with a liquid docking pipe which is integrally formed with the longitudinal hollow shell and passes through the No. 1 shaft fixing hole, the bottom end of the longitudinal hollow shell is provided with a plurality of inclined hollow shells which are integrally formed with the longitudinal hollow shell, a liquid compression cavity is provided inside the longitudinal hollow shell, a liquid injection hole which connects the external space and the liquid compression cavity is provided inside the liquid docking pipe, a liquid limiting flow cavity is provided at the bottom end of the longitudinal hollow shell at the liquid compression cavity, an inclined liquid flow cavity with one end connected to the liquid limiting flow cavity is provided inside the inclined hollow shell, a No. 1 shaft mounting hole which connects the external space and the liquid limiting flow cavity is provided at the center of the bottom end of the longitudinal hollow shell, and a plurality of water spray holes which connect the lower space and the inclined liquid flow cavity are provided inside the inclined hollow shell.

[0011] Preferably, the curvature of the center line of the lower surface of the oblique hollow shell is consistent with the inclination of the upper surface of the conical filter disc.

[0012] Preferably, the axis of each of the water spray holes is collinear with the axis of a corresponding filter hole.

[0013] Preferably, the rotary drive mechanism includes a component fixing frame fixedly mounted inside the No. 2 gas flow chamber, the interior of the component fixing frame is provided with a gas flow port communicating with its upper and lower end faces, the center of the component fixing frame is provided with a rotatable lower rotating shaft through a bearing, the bottom end of the lower rotating shaft extends to the bottom of the No. 2 gas flow chamber and a pulley is fixedly mounted on the bottom end, the upper end of the lower rotating shaft extends to between the No. 1 gas flow chamber and the lower rotating limiting ring and the top end is provided with a hollow rotating shaft that is an integral structure with the lower rotating shaft, the top center of the hollow rotating shaft is provided with an upper rotating shaft that is an integral structure with it and extends upward, the shaft body of the upper rotating shaft passes through the No. 2 shaft body fixing hole, the No. 1 shaft body mounting hole and the liquid limiting flow chamber, and extends to the inside of the liquid compression cavity. The upper rotating shaft is fixedly connected to the annular fixing sleeve at the shaft body located inside the No. 2 shaft body fixing hole, and the upper rotating shaft is installed in the corresponding structure of the longitudinal hollow shell through a mechanical sealing structure at the shaft body located inside the No. 1 shaft body mounting hole. The upper rotating shaft is provided with a spiral impeller which is an integral structure with the upper rotating shaft at the periphery of the shaft body located inside the liquid compression cavity. A liquid pressure cavity is provided inside the hollow rotating shaft, and a plurality of atomizing nozzles for spraying liquid outward are provided on the circumferential surface of the hollow rotating shaft. A longitudinal liquid flow hole connecting its top end and the liquid pressure cavity is provided inside the upper rotating shaft, and a plurality of upper and lower array-type fan blades are fixedly installed on the periphery of the shaft body located inside the No. 1 gas flow cavity and the No. 2 gas flow cavity.

[0014] Preferably, there is a gap for liquid flow between the top end of the upper rotating shaft and the top end of the liquid compression cavity.

[0015] Compared with the prior art, the present invention provides a waste gas treatment device for stearic acid production, which has the following beneficial effects:

[0016] The waste gas treatment equipment for stearic acid production uses the same component to achieve both the driving effect of waste gas and the kinetic energy required for cleaning debris, thereby effectively improving the effective utilization rate of kinetic energy. In addition, when cleaning debris, it relies on the high-pressure flushing ability of the liquid and the centrifugal force of the debris during rotation to perform dredging work. It has the characteristics of strong action force and reasonable action direction, so that the debris can be dredged and cleaned to the maximum extent, while ensuring the normal filtration area of ​​the filter holes to ensure the normal filtration efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective view of the present invention.

[0018] Figure 2 It is a three-dimensional cross-sectional view of the present invention.

[0019] Figure 3It is a three-dimensional diagram of the rotary filtering mechanism of the present invention.

[0020] Figure 4 It is a three-dimensional cross-sectional view of the rotary filtering mechanism of the present invention.

[0021] Figure 5 It is a three-dimensional diagram of the jet flushing mechanism in the present invention.

[0022] Figure 6 It is a three-dimensional cross-sectional view of the jet flushing mechanism in the present invention.

[0023] Figure 7 It is a three-dimensional diagram of the rotary drive mechanism of the present invention.

[0024] Figure 8 It is a three-dimensional cross-sectional view of the rotary drive mechanism of the present invention.

[0025] Among them: 1. Vertical cylinder; 2. Support legs; 3. Filter cavity; 4. Center limit plate; 5. Horizontal fixing rod; 6. Exhaust gas outlet; 7. No. 1 gas flow cavity; 8. Trumpet-shaped air guide cover; 9. No. 2 gas flow cavity; 10. Waste liquid discharge channel; 11. No. 1 shaft fixing hole; 12. Rotary filter mechanism; 121. Fixed ring; 122. Annular protrusion structure; 123. Annular limit groove; 124. Conical filter disc; 125. Conical cavity; 126. Upper rotation limit ring; 127. Lower rotation limit ring; 128. Annular fixing sleeve; 129. No. 2 shaft fixing hole; 1210. Filter hole; 13. Jet flushing mechanism; 131. Longitudinal air filter; 132. Core shell; 132, upper fixed plate; 133, liquid docking pipe; 134, oblique hollow shell; 135, liquid compression cavity; 136, liquid injection hole; 137, liquid limit flow cavity; 138, No. 1 shaft mounting hole; 139, oblique liquid flow cavity; 1310, water spray hole; 14, rotary drive mechanism; 141, component fixing frame; 142, lower rotating shaft; 143, pulley; 144, fan blade; 145, gas flow port; 146, hollow rotating shaft; 147, liquid is pressed into cavity; 148, atomizing nozzle; 149, upper rotating shaft; 1410, spiral impeller; 1411, longitudinal liquid flow hole; 15, conical boss. DETAILED DESCRIPTION

[0026] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1 and Figure 2 , a waste gas treatment equipment for stearic acid production, comprising a vertical cylinder 1 with a support leg 2 installed at the bottom, a filter cavity 3 arranged inside the vertical cylinder 1 and open at the top, a conical raised platform 15 arranged at the bottom end of the filter cavity 3, a central limiting plate 4 fixed to the center of the top of the filter cavity 3 by multiple horizontal fixing rods 5, an exhaust gas discharge port 6 formed by the area between each two adjacent horizontal fixing rods 5, a No. 1 shaft fixing hole 11 arranged at the center of the central limiting plate 4, a trumpet-shaped air guide hood 8 arranged at the bottom end of the vertical cylinder 1, and a conical raised platform 15 arranged inside the conical raised platform 15 and open at the top. The No. 1 gas flow chamber 7, the No. 2 gas flow chamber 9 which is arranged inside the trumpet-shaped air guide cover 8 and connected to the No. 1 gas flow chamber 7 at the top, and the waste liquid discharge channel 10 which is arranged at the edge of the bottom end of the vertical cylinder 1 and connected to the bottom end of the filter cavity 3, the exhaust port of the pipe for discharging waste gas in the stearic acid production process is placed directly below the No. 2 gas flow chamber 9, and then the liquid docking pipe 133 is docked with the discharge port of the storage tank for storing the neutralization liquid through the pipe. It should be noted that the amount of neutralization liquid discharged from the discharge port needs to always meet the amount required to fill the liquid compression cavity 135.

[0028] In order to filter the debris in the exhaust gas and drive the debris to rotate to generate centrifugal force, thereby using the centrifugal force of the debris and liquid to achieve dredging, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , it is necessary to set a rotating filter mechanism 12, which is provided with a conical filter disc 124 located inside the filter cavity 3 and capable of rotating, and capable of filtering the flowing gas. When the exhaust gas with impurities passes through the filter holes 1210, the impurities will be intercepted by the solid part of the conical filter disc 124. Therefore, most of the impurities will adhere to the lower surface of the conical filter disc 124, and some impurities will adhere to the air inlet port of the filter holes 1210. When the impurities reach a certain level and cause the gas filtration efficiency to decrease, the conical filter disc 124 will rotate at a high speed. At this time, the impurities and liquid attached to the surface of the conical filter disc 124 and the inside of the filter holes 1210 will generate centrifugal force. When the centrifugal force is greater than the adhesion force of the matter, the impurities and liquid will be thrown out, thereby utilizing the centrifugal force of the impurities and liquid themselves to achieve dredging. Since the centrifugal force is generated by the impurities and liquid themselves, it has the characteristics of strong dredging ability and strong dredging effect.

[0029] For the specific structure of the rotary filter mechanism 12, please refer to Figure 3 and Figure 4, including a fixing ring 121 and a conical filter disc 124 fixedly mounted inside the top of the filter cavity 3, the inner circumferential surface of the fixing ring 121 is provided with an annular protrusion structure 122 with an integral structure therewith, the inner circumferential surface of the annular protrusion structure 122 is provided with an annular limiting groove 123 formed by an outward depression, and the top of the conical filter disc 124 is provided with an upper rotation limiting ring 126 with an integral structure therewith and capable of rotating inside the annular limiting groove 123. In order to achieve the filtering effect of the inclined surface, it is necessary to make the structural radius of the top of the conical filter disc 124 larger than the structural radius of its bottom end, and the structural size of the upper rotation limiting ring 126 is consistent with the structural size of the annular limiting groove 123. The structural dimensions of the conical filter disc 124 are matched, and the bottom end of the conical filter disc 124 is provided with a lower rotation limit ring 127 of an integral structure therewith. The upper recessed portion of the conical filter disc 124 constitutes a conical cavity 125. An annular fixing sleeve 128 is fixedly installed at the center of the lower rotation limit ring 127. A No. 2 shaft fixing hole 129 is provided at the center of the annular fixing sleeve 128. A plurality of filter holes 1210 for filtering gas are provided at the conical circumferential wall thickness of the conical filter disc 124. By changing the flow direction of the medium, a certain impurity filtering effect is achieved. It is necessary to make the filter holes 1210 present a forty-five degree angle with the axis of the conical filter disc 124.

[0030] In order to achieve the water flushing of the conical filter disc 124, thereby further improving the effect of clearing debris, please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , it is necessary to set up a jet flushing mechanism 13, the jet flushing mechanism 13 is provided with a longitudinal hollow shell 131 fixedly installed on the bottom of the central limiting plate 4 and capable of allowing the liquid to flow along the inside of the structure, and an oblique hollow shell 134 obliquely provided on the outer periphery of the bottom of the longitudinal hollow shell 131 and capable of allowing the liquid to be sprayed toward the conical filter disc 124. When the neutralizing liquid flows downward, it will pass through the liquid limiting flow cavity 137 into the interior of the oblique liquid flow cavity 139. Under continuous liquid pressure, the neutralizing liquid will eventually be sprayed through each water spray hole 1310 into each filter hole 1210 of the conical filter disc 124, and the impurities remaining in the filter hole 1210 will be flushed, thereby further improving the dredging effect of the impurities and reducing the occurrence of the filter space prevention phenomenon caused by impurities in the filter hole 1210.

[0031] For the specific structure of the jet flushing mechanism 13, please refer to Figure 5 and Figure 6, including a longitudinal hollow shell 131, the upper end surface of the longitudinal hollow shell 131 is provided with an upper fixing plate 132 which is an integral structure with it and fixedly mounted on the bottom surface of the center limit plate 4, the center of the upper end surface of the longitudinal hollow shell 131 is provided with a liquid docking pipe 133 which is an integral structure with it and passes through the No. 1 shaft fixing hole 11, the bottom end of the longitudinal hollow shell 131 is provided with a plurality of oblique hollow shells 134 which are an integral structure with it, in order to have a consistent medium flow gap, it is necessary to make the curvature of the center line of the lower surface of the oblique hollow shell 134 consistent with the inclination of the upper surface of the conical filter disc 124, the interior of the longitudinal hollow shell 131 is provided with a liquid compression cavity 135, and the interior of the liquid docking pipe 133 is provided with a liquid connecting the external space and the liquid The liquid injection hole 136 of the compression cavity 135, the longitudinal hollow shell 131 is provided with a liquid limiting flow cavity 137 at the bottom end of the liquid compression cavity 135, and the interior of the oblique hollow shell 134 is provided with an oblique liquid flow cavity 139 with one end connected to the liquid limiting flow cavity 137, and the bottom center of the longitudinal hollow shell 131 is provided with a No. 1 shaft mounting hole 138 connecting the external space and the liquid limiting flow cavity 137, and the interior of the oblique hollow shell 134 is provided with a plurality of water spray holes 1310 connecting the lower space and the oblique liquid flow cavity 139. In order to achieve a positive flushing effect on each filter hole 1210, it is necessary to make the axis line of each water spray hole 1310 collinear with the axis line of a corresponding filter hole 1210.

[0032] In order to achieve the proper direction of the exhaust gas and neutralizing liquid drive, and the rotational capacity required to generate the centrifugal force, please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8, it is necessary to set up a rotary drive mechanism 14, which is provided with a lower rotating shaft 142 and an upper rotating shaft 149 located inside the filter cavity 3 and capable of rotating with the external driving equipment, a fan blade 144 that rotates with the lower rotating shaft 142 and can cause the surrounding gas to flow upward when rotating, and a spiral impeller 1410 that rotates with the upper rotating shaft 149 and can cause the liquid inside the longitudinal hollow shell 131 to flow longitudinally when rotating. Before work, it is necessary to cooperate with a driving motor with a pulley installed at the end of the rotor, and the pulley at the end of the rotor and the pulley 143 are linked by a belt. Start the driving motor so that the rotor drives the pulley 143 to rotate in the positive direction. At this time, the pulley 143 will drive the fan blade 144, the spiral impeller 1410 and the atomizing nozzle 148 to rotate in the positive direction. When the fan blade 144 rotates in the positive direction, the discharged exhaust gas will produce an upward flow effect. As a result, the exhaust gas will eventually flow into the interior of the filter cavity 3 and continue to flow upward. When the spiral impeller 1410 rotates forward, the neutralizing liquid around it will be atomized and sprayed into the exhaust gas area through the longitudinal liquid flow hole 1411 and the atomizing nozzle 148 under continuous pressure output. The atomized neutralizing liquid particles can have a neutralizing effect on the exhaust gas. At the same time, liquid neutralization can eliminate some debris and dust. When it is necessary to clean the debris in the blocked area, the rotor of the driving motor is rotated in the opposite direction. At this time, the spiral impeller 1410 rotates in the opposite direction, which will cause the liquid around it to move in a downward direction. The neutralizing liquid will be compressed downward and will eventually be sprayed into the various filter holes 1210 of the conical filter disc 124 through each water spray hole 1310, so as to flush the debris remaining in the filter hole 1210. The flushed waste liquid and debris will be discharged outward through the waste liquid discharge channel 10.

[0033] For the specific structure of the rotary drive mechanism 14, please refer to Figure 7 and Figure 8, including a component fixing frame 141 fixedly mounted inside the No. 2 gas flow chamber 9, the component fixing frame 141 is provided with a gas flow port 145 communicating with its upper and lower end surfaces, the center of the component fixing frame 141 is provided with a rotatable lower rotating shaft 142 through a bearing, the bottom end of the lower rotating shaft 142 extends to the bottom of the No. 2 gas flow chamber 9 and a pulley 143 is fixedly mounted on the bottom end, the upper end of the lower rotating shaft 142 extends to the No. 1 gas flow chamber 7 and the lower rotation limit A hollow rotating shaft 146 is provided between the rings 127 and at the top thereof, which is an integral structure with the lower rotating shaft 142. An upper rotating shaft 149 is provided at the top center of the hollow rotating shaft 146, which is an integral structure with the lower rotating shaft 142 and extends upward. The shaft body of the upper rotating shaft 149 passes through the No. 2 shaft body fixing hole 129, the No. 1 shaft body mounting hole 138 and the liquid limiting flow cavity 137, and extends to the interior of the liquid compression cavity 135. The upper rotating shaft 149 is located in the shaft body inside the No. 2 shaft body fixing hole 129. It is fixedly connected to the annular fixing sleeve 128, and the upper rotating shaft 149 is installed in the corresponding structure of the longitudinal hollow shell 131 through a mechanical sealing structure on the shaft body located inside the No. 1 shaft body mounting hole 138. The upper rotating shaft 149 is provided with a spiral impeller 1410 which is an integral structure with the upper rotating shaft 149 on the periphery of the shaft body located inside the liquid compression cavity 135. The interior of the hollow rotating shaft 146 is provided with a liquid pressure cavity 147, and the circumferential surface of the hollow rotating shaft 146 is provided with a plurality of atomizing nozzles 148 for spraying liquid outward. The interior of the upper rotating shaft 149 is provided with a longitudinal liquid flow hole 1411 connecting its top and the liquid pressure cavity 147. The lower rotating shaft 142 is fixedly installed with a plurality of upper and lower array-type fan blades 144 on the periphery of the shaft body located inside the No. 1 gas flow cavity 7 and the No. 2 gas flow cavity 9. There is a gap for liquid flow between the top of the upper rotating shaft 149 and the top of the liquid compression cavity 135.

[0034] When in use, it needs to be used in conjunction with a driving motor with a pulley installed at the end of the rotor, and the pulley at the end of the rotor and the pulley 143 are linked by a belt. The exhaust port of the pipe used to discharge waste gas during the stearic acid production process is placed directly below the No. 2 gas flow chamber 9, and then the liquid docking pipe 133 is docked with the discharge port of the storage tank for storing the neutralizing liquid through a pipe. It should be noted that the amount of neutralizing liquid discharged from the discharge port needs to meet the amount required to fill the liquid compression cavity 135 at all times. In other words, the neutralizing liquid needs to be continuously transported to the liquid docking pipe 133 through the liquid pump;

[0035] Start the driving motor so that the rotor drives the pulley 143 to rotate in the positive direction. At this time, the pulley 143 will drive the fan blades 144, the spiral impeller 1410 and the atomizing nozzle 148 to rotate in the positive direction. When the fan blades 144 rotate in the positive direction, the exhaust gas discharged will have an upward flow effect, and eventually the exhaust gas will flow into the interior of the filter cavity 3 and continue to flow upward. When the spiral impeller 1410 rotates in the positive direction, the neutralizing liquid located around it will be atomized and sprayed toward the exhaust gas area through the longitudinal liquid flow hole 1411 and the atomizing nozzle 148 under continuous pressure output. The atomized neutralizing liquid The particles can neutralize the exhaust gas. At the same time, the liquid neutralization can eliminate some debris and dust. When it is necessary to clean the debris in the blocked area, the rotor of the driving motor is rotated in the opposite direction. At this time, the spiral impeller 1410 rotates in the opposite direction, which will cause the liquid around it to move downward. The neutralizing liquid will be compressed downward and will eventually be sprayed into the filter holes 1210 of the conical filter disc 124 through the various water spray holes 1310, thereby flushing the debris remaining in the filter holes 1210. The flushed waste liquid and debris will be discharged outward through the waste liquid discharge channel 10.

[0036] During this process, when the exhaust gas containing debris passes through the filter hole 1210, the debris will be intercepted by the solid part of the conical filter disc 124. Therefore, most of the debris will adhere to the lower surface of the conical filter disc 124, and some debris will adhere to the air inlet port of the filter hole 1210. When the debris reaches a certain level and causes the gas filtration efficiency to decrease, the drive motor is started to make the conical filter disc 124 rotate at high speed. At this time, the debris and liquid attached to the surface of the conical filter disc 124 and the inside of the filter hole 1210 will generate centrifugal force. When the centrifugal force is greater than the adhesion force of the substance, the debris and liquid will be thrown out, thereby utilizing the centrifugal force of the debris and liquid themselves to achieve dredging.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for stearic acid production, comprising a vertical cylinder (1) with a support leg (2) installed at the bottom, a filter cavity (3) arranged inside the vertical cylinder (1) and open at the top, a conical raised platform (15) arranged at the bottom of the filter cavity (3), a central stopper plate (4) fixed to the center of the top of the filter cavity (3) by a plurality of horizontal fixing rods (5), a waste gas discharge port (6) formed by the area between each two adjacent horizontal fixing rods (5), and a central stopper plate (4) fixed to the center of the top of the filter cavity (3) by a plurality of horizontal fixing rods (5). A first shaft fixing hole (11) at the center of the plate (4), a trumpet-shaped air guide cover (8) arranged at the bottom end of the vertical cylinder (1), a first gas flow chamber (7) arranged inside the conical protrusion (15) and having an open top, a second gas flow chamber (9) arranged inside the trumpet-shaped air guide cover (8) and connected to the first gas flow chamber (7) at the top, and a waste liquid discharge channel (10) arranged at the bottom edge of the vertical cylinder (1) and connected to the bottom end of the filter cavity (3), characterized in that: Also includes, A rotating filter mechanism (12), the rotating filter mechanism (12) being provided with a conical filter disc (124) located inside the filter cavity (3) and capable of rotating and filtering flowing gas; A jet flushing mechanism (13), the jet flushing mechanism (13) being provided with a longitudinal hollow shell (131) fixedly mounted on the bottom of the central stop plate (4) and capable of allowing liquid to flow along the interior of the structure, and an oblique hollow shell (134) obliquely arranged on the periphery of the bottom of the longitudinal hollow shell (131) and capable of allowing liquid to be sprayed toward the conical filter disc (124); and a rotary drive mechanism (14), the rotary drive mechanism (14) being provided with a lower rotary shaft (142) and an upper rotary shaft (149) located inside the filter cavity (3) and capable of rotating with an external driving device, a fan blade (144) rotating with the lower rotary shaft (142) and capable of causing surrounding gas to flow upward when rotating, and a spiral impeller (1410) rotating with the upper rotary shaft (149) and capable of causing liquid located inside the longitudinal hollow housing (131) to flow longitudinally when rotating; The rotary filter mechanism (12) comprises a fixing ring (121) fixedly mounted inside the top end of the filter cavity (3) and a conical filter disc (124); the inner circumferential surface of the fixing ring (121) is provided with an annular protrusion structure (122) integrally formed therewith; the inner circumferential surface of the annular protrusion structure (122) is provided with an annular limiting groove (123) recessed outward; the top end of the conical filter disc (124) is provided with an upper rotary limiting ring (121) integrally formed therewith and capable of rotating inside the annular limiting groove (123). 126), a lower rotation limit ring (127) integrally formed with the conical filter disc (124) is provided at the bottom end thereof, an upper recessed portion of the conical filter disc (124) forms a conical cavity (125), an annular fixing sleeve (128) is fixedly mounted at the center of the lower rotation limit ring (127), a second shaft fixing hole (129) is provided at the center of the annular fixing sleeve (128), and a plurality of filter holes (1210) for filtering gas are provided at the conical circumferential wall thickness of the conical filter disc (124).

2. The waste gas treatment equipment for stearic acid production according to claim 1, characterized in that: The structural radius of the top end of the conical filter disc (124) is greater than the structural radius of the bottom end thereof, and the structural dimensions of the upper rotation limiting ring (126) match the structural dimensions of the annular limiting groove (123).

3. The waste gas treatment equipment for stearic acid production according to claim 2, characterized in that: The filter hole (1210) and the axis of the conical filter disc (124) form an angle of forty-five degrees.

4. The waste gas treatment equipment for stearic acid production according to claim 3, characterized in that: The jet flushing mechanism (13) comprises a longitudinal hollow shell (131), the upper end surface of the longitudinal hollow shell (131) is provided with an upper fixing plate (132) which is integrally formed with the longitudinal hollow shell (131) and fixedly mounted on the bottom surface of the central limiting plate (4), the center of the upper end surface of the longitudinal hollow shell (131) is provided with a liquid docking pipe (133) which is integrally formed with the longitudinal hollow shell (131) and passes through the No. 1 shaft fixing hole (11), the bottom end of the longitudinal hollow shell (131) is provided with a plurality of oblique hollow shells (134) which are integrally formed with the longitudinal hollow shell (131), the interior of the longitudinal hollow shell (131) is provided with a liquid compression cavity (135), and the interior of the liquid docking pipe (133) is provided with a liquid connecting pipe (133) which is connected to the inner wall of the liquid connecting pipe (133). The invention relates to a liquid injection hole (136) for connecting the external space and the liquid compression cavity (135); the longitudinal hollow shell (131) is provided with a liquid limiting flow cavity (137) at the bottom end of the liquid compression cavity (135); the interior of the oblique hollow shell (134) is provided with an oblique liquid flow cavity (139) whose one end is connected to the liquid limiting flow cavity (137); the center of the bottom end of the longitudinal hollow shell (131) is provided with a No. 1 shaft body mounting hole (138) connecting the external space and the liquid limiting flow cavity (137); the interior of the oblique hollow shell (134) is provided with a plurality of water spray holes (1310) connecting the lower space and the oblique liquid flow cavity (139).

5. The waste gas treatment equipment for stearic acid production according to claim 4, characterized in that: The curvature of the centerline of the lower surface of the inclined hollow shell (134) is consistent with the inclination of the upper surface of the conical filter disc (124).

6. The waste gas treatment equipment for stearic acid production according to claim 5, characterized in that: The axis center line of each water spray hole (1310) is arranged collinearly with the axis center line of a corresponding filtering hole (1210).

7. The waste gas treatment equipment for stearic acid production according to claim 6, characterized in that: The rotary drive mechanism (14) comprises a component fixing frame (141) fixedly mounted inside the No. 2 gas flow chamber (9), the component fixing frame (141) is provided with a gas flow port (145) communicating with the upper and lower end surfaces thereof, a rotatable lower rotating shaft (142) is mounted at the center of the component fixing frame (141) via a bearing, the bottom end of the lower rotating shaft (142) extends to the bottom of the No. 2 gas flow chamber (9) and a pulley (143) is fixedly mounted on the bottom end, and the upper end of the lower rotating shaft (142) is provided with a gas flow port (145) communicating with the upper and lower end surfaces thereof. The end of the hollow rotating shaft (146) extends between the first gas flow chamber (7) and the lower rotation limiting ring (127), and the top end is provided with a hollow rotating shaft (146) which is an integral structure with the lower rotating shaft (142); the top center of the hollow rotating shaft (146) is provided with an upper rotating shaft (149) which is an integral structure with the hollow rotating shaft and extends upward; the shaft body of the upper rotating shaft (149) passes through the second shaft body fixing hole (129), the first shaft body mounting hole (138) and the liquid limiting flow chamber (137), and extends to the interior of the liquid compression chamber (135); The upper rotating shaft (149) is fixedly connected to the annular fixing sleeve (128) at the shaft body located inside the No. 2 shaft body fixing hole (129); the upper rotating shaft (149) is installed in the corresponding structure of the longitudinal hollow shell (131) at the shaft body located inside the No. 1 shaft body mounting hole (138) through a mechanical sealing structure; the upper rotating shaft (149) is provided with a spiral impeller (1410) which is an integral structure with the upper rotating shaft (149) at the outer periphery of the shaft body located inside the liquid compression cavity (135); the hollow rotating shaft (149) is provided with a spiral impeller (1410) which is an integral structure with the upper rotating shaft (149); A liquid pressure cavity (147) is provided inside the moving shaft (146), a plurality of atomizing nozzles (148) for spraying liquid outward are provided on the circumferential surface of the hollow rotating shaft (146), a longitudinal liquid flow hole (1411) connecting the top end thereof and the liquid pressure cavity (147) is provided inside the upper rotating shaft (149), and a plurality of upper and lower array-type fan blades (144) are fixedly installed on the periphery of the shaft body of the lower rotating shaft (142) located inside the No. 1 gas flow cavity (7) and the No. 2 gas flow cavity (9).

8. The waste gas treatment equipment for stearic acid production according to claim 7, characterized in that: There is a gap for liquid flow between the top end of the upper rotating shaft (149) and the top end of the liquid compression cavity (135).

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