A tetrachloroethylene harmless tail gas treatment equipment

Abstract

The application discloses a tetrachloroethylene harmless tail gas treatment equipment and relates to the technical field of tail gas treatment. The tetrachloroethylene harmless tail gas treatment equipment comprises a casing, an air inlet channel, a pre-filter layer, a discharge port, an exhaust fan, a support frame, a zeolite runner, an adsorption area, a driving motor, an incinerator, a fixed ring tube, a desorption assembly, a regulation assembly and a cooling assembly. In the purification process, the desorption assembly makes the harmful substances flow along the airflow and finally be discharged into the incinerator, and the cooling assembly restores the zeolite runner, which is heated by the desorption assembly, to a suitable working temperature for adsorption. When purifying the tetrachloroethylene tail gas with a larger air volume, the regulation assembly will be automatically adjusted by the air speed to make the area of the desorption assembly larger, increase the desorption time of the zeolite runner through the desorption assembly, and meanwhile, the regulation assembly can also mix and stir the gas before entering the zeolite runner for purification, thereby improving the mixing uniformity of the harmful substances in the gas.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas treatment technology, specifically a tetrachloroethylene harmless exhaust gas treatment device. Background Technology

[0002] Tetrachloroethylene is a colorless, non-flammable liquid widely used in industrial fields such as dry cleaning, metal degreasing, and chemical intermediate synthesis due to its excellent solubility. However, during use and production, tetrachloroethylene exhaust gases can easily escape into the atmosphere, causing air pollution.

[0003] To prevent tetrachloroethylene gas from polluting the atmosphere, zeolite rotor purification equipment is typically used to purify low-concentration, high-volume tetrachloroethylene exhaust gas. The zeolite rotor is usually divided into three zones: an adsorption zone, a desorption zone, and a cooling zone. In the adsorption zone, the zeolite molecular sieve adsorbs and filters the toxic substances in the exhaust gas, and the filtered air is then directly discharged. The desorption zone provides a reverse high-temperature airflow, which breaks the adsorption force between the zeolite molecular sieve and the toxic substances, causing the captured toxic substances to desorb rapidly. The cooling zone cools the zeolite molecular sieve, which has been heated by the high-temperature airflow, restoring it to a suitable adsorption operating temperature.

[0004] However, the desorption zone area of ​​existing zeolite rotors is fixed. When ultra-high volume tetrachloroethylene waste gas passes through the zeolite rotor, although the adsorption zone can meet the adsorption effect, the desorption zone has a small area and the zeolite rotor spends a short time passing through the desorption zone. Therefore, when purifying ultra-high volume tetrachloroethylene waste gas, the desorption zone is prone to problems with insufficient desorption efficiency. This results in the zeolite rotor not being completely desorbed before entering the adsorption zone, leading to a decrease in adsorption capacity and thus failing to meet the waste gas purification effect. Furthermore, when the mixing uniformity of waste gas and air is poor, it can also easily lead to a situation where, in areas with high waste gas concentration, the zeolite quickly adsorbs to near its capacity limit, while the zeolite in other areas is far from saturated.

[0005] Therefore, a harmless exhaust gas treatment device for tetrachloroethylene is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a harmless treatment device for tetrachloroethylene tail gas to solve the problems raised in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: Preferably, a tetrachloroethylene harmless tail gas treatment device includes a casing, an air inlet channel, a pre-filter layer, an outlet, an exhaust fan, a support frame, a zeolite rotor, an adsorption zone, a drive motor, an incinerator, a fixed ring pipe, a desorption assembly, a control assembly, and a cooling assembly. The air inlet channel is located on the left side of the casing, the pre-filter layer is fixedly connected to the air inlet channel, the outlet is located on the right side of the casing, the exhaust fan is fixedly installed at the outlet, the support frame is fixedly connected to the middle of the casing, the zeolite rotor is rotatably connected to the support frame, the adsorption zone always occupies more than half of the total area of ​​the zeolite rotor, the drive motor is fixedly connected to the casing, the output end of the drive motor is connected to the outer ring of the zeolite rotor via a chain drive, the fixed ring pipe is fixedly connected to both sides of the support frame via connecting rods, and the desorption assembly is located on both sides of the zeolite rotor and slidably connected to the inner wall of the fixed ring pipe. The desorption component is connected to the incinerator. The control component is located at the air inlet channel and extends into the casing. The cooling component is located on both sides of the zeolite rotor and is located next to the desorption component. The cooling component is also connected to the air inlet channel. During the purification process, the high-temperature airflow will pass through the zeolite rotor from the desorption component, destroying the adsorption force between the molecular sieve and harmful substances in the zeolite rotor. This allows the captured harmful substances to be discharged into the incinerator along with the airflow. The cooling component will cool down the zeolite rotor after it has been heated by the desorption component, restoring it to a suitable adsorption operating temperature. When the exhaust fan speed increases to purify a larger volume of tetrachloroethylene tail gas, the control component will automatically adjust to increase the area of ​​the desorption component due to the wind speed, increasing the desorption time of the zeolite rotor. At the same time, the control component can also mix and stir the gas before it enters the zeolite rotor for purification, improving the uniformity of the mixing of harmful substances in the gas.

[0008] Preferably, the desorption assembly includes a partition plate, a fixed plate, a support sleeve, a rotating rod, a connecting block, a semi-enclosed adjusting plate, an elastic element, a hot air duct, and a connecting pipe; the partition plate, the fixed plate, and the fixed ring pipe are fixedly connected; the support sleeve is fixedly connected below the partition plate and the fixed plate, and passes through the center of the zeolite wheel and is rotatably connected to the zeolite wheel; the rotating rod is rotatably connected to the support sleeve, and both ends of the rotating rod extend out of the support sleeve; the semi-enclosed adjusting plate is fixedly connected to the rotating rod through the connecting block; one end of the elastic element is fixedly connected to the fixed plate, and the other end is fixedly connected to the semi-enclosed adjusting plate; the semi-enclosed... The area between the regulating plate, the partition plate, and the fixed plate is the desorption zone. The hot air pipe is connected to the desorption zone on the right side of the zeolite rotor, and the connecting pipe is connected between the incinerator and the desorption zone on the left side of the zeolite rotor. While purifying the tetrachloroethylene tail gas, the high-temperature hot airflow is blown in by the fan through the hot air pipe, passes through the zeolite rotor, and is finally discharged into the incinerator through the connecting pipe. The hot airflow then desorbs the zeolite rotor in the desorption zone, destroying the adsorption force between the molecular sieve and harmful substances in the zeolite rotor. This causes the harmful molecules to fall off the zeolite rotor and enter the incinerator with the hot airflow. The ultra-high temperature combustion in the incinerator can render the toxic substances harmless.

[0009] Preferably, a baffle is also fixedly connected between the fixed ring tube and the housing, and the baffle is located at the fixed ring tube on the left side of the zeolite rotor; since the zeolite rotor, the support frame and the baffle are all rotatably connected, the baffle can prevent the tetrachloroethylene tail gas entering the housing from leaking and escaping from the zeolite rotor and the support frame without being purified.

[0010] Preferably, the control assembly includes a mounting plate, a drive rod, a drive fan, a fixed block, a sliding block, a push rod, a push block, a centrifugal rod, a rotating shaft, a counterweight ball, an elastic element two, and a drive component; the mounting plate is fixedly connected to the air intake channel, the drive rod is rotatably connected to the mounting plate, the right end of the drive rod extends into the housing, the drive fan is fixedly connected to the drive rod, the fixed block is fixedly connected to the right end of the drive rod, the sliding block is sleeved on the outside of the drive rod and slidably connected to the drive rod, the push rod is fixedly connected to the sliding block, and the push rod passes through the fixed block and is slidably connected to the fixed block, the push block is fixedly connected to the right end of the push rod, the middle part of the centrifugal rod is hinged to each other by a rotating shaft, the left end of the centrifugal rod is hinged to the sliding block, the right end of the centrifugal rod is hinged to the fixed block, the counterweight ball is fixedly connected to the rotating shaft, the elastic element two is sleeved on the outside of the drive rod and located between the fixed block and the sliding block, and the drive component is located at the left end of the rotating rod; in four When the vinyl chloride exhaust gas enters the casing, it first passes through the drive fan. The airflow then drives the drive fan and drive rod to rotate. The centrifugal force generated during the rotation of the drive rod causes the sliding block to overcome the thrust of the elastic element and slide towards the fixed block. During the sliding process, the sliding block also abuts against the drive component through the push rod and push block, thereby causing the drive component to drive the semi-enclosed adjustment plate to rotate and open along the rotating rod, thus increasing the area of ​​the desorption zone. When the tetrachloroethylene exhaust gas passes through the centrifugal rod, it will be agitated by the centrifugal rod and the counterweight ball, so that the toxic substances in the exhaust gas are fully mixed with the air. This ensures that the toxic substances in the exhaust gas are evenly distributed when passing through the zeolite rotor. Furthermore, as the exhaust fan speed increases, the airflow of tetrachloroethylene into the casing will be higher, and the speed of the drive fan and drive rod will be faster. The counterweight ball will be thrown to a wider range, thus increasing the agitation range of the exhaust gas. This achieves the effect of automatically adjusting the agitation range according to the exhaust gas airflow.

[0011] Preferably, a rotating block is also provided on the right side of the push block, and the rotating block is rotatably connected to the push block; since the drive rod, the sliding block and the push block are always rotating as a whole during operation, the setting of the rotating block allows the push block to abut against the drive component through the rotating block, and thus the axial connection between the rotating block and the push block can be used to reduce the influence on the rotational force of the drive rod.

[0012] Preferably, a guide cone is fixedly connected to the left side of the sliding block, and the diameter of the guide cone gradually increases from left to right; the guide cone can use its own conical shape to guide the exhaust gas flow to the mixing and stirring area where the centrifugal rod and the counterweight ball are located.

[0013] Preferably, the driving component includes a driving groove, a support rod, a support ring, a sliding sleeve, and a driving column; the driving groove is spirally formed on the outer wall of the left end of the rotating rod; the support rod is fixedly connected to the top of the housing; the support ring is fixedly connected to the bottom end of the support rod; the sliding sleeve is slidably connected to the support ring; the driving column is fixedly connected to the right side of the sliding sleeve; the bottom end of the driving column is located in the driving groove and slidably connected to the driving groove; when the driving fan and driving rod rotate, the counterweight ball, under the action of centrifugal force, pulls the sliding block through the centrifugal rod, causing the sliding block to push the pushing block and... When the rotating block slides to the right, it pushes the sliding sleeve to move to the right along the support ring. The drive column drives the rotating rod through the drive groove to rotate the semi-enclosed adjustment plate counterclockwise, expanding the area of ​​the desorption zone. As the exhaust fan speed increases and the air volume of tetrachloroethylene entering the casing increases, the rotation range of the semi-enclosed adjustment plate becomes larger, resulting in a larger desorption zone area and a stronger desorption effect on the zeolite rotor. This effectively prevents the problem of insufficient desorption efficiency in the desorption zone when purifying ultra-high volume tetrachloroethylene exhaust gas.

[0014] Preferably, the cooling assembly includes a semi-enclosed connecting plate, a cold air duct, and a guide pipe; the semi-enclosed connecting plate, the partition, the fixed ring pipe, and the support sleeve are fixedly connected to each other; the area between the semi-enclosed connecting plate and the partition is a cooling zone; the cold air duct is connected to the cooling zone on the right side of the zeolite rotor; and the guide pipe is connected between the cooling zone and the air intake channel. During the purification of tetrachloroethylene tail gas, the cold air duct receives cold air continuously blown in by the blower. The cold air then passes through the zeolite rotor in the cooling zone to cool the zeolite rotor, restoring it to a suitable adsorption operating temperature. The gas passing through the zeolite rotor carries away a small amount of toxic substances that have not been completely desorbed. These toxic substances will then be discharged along the airflow through the guide pipe into the air intake channel for secondary purification, thereby effectively improving the purity of the tetrachloroethylene tail gas purification.

[0015] Preferably, the connection point between the guide pipe and the air intake channel is located on the left side of the drive fan; the guide pipe discharges slightly concentrated exhaust gas into the air intake channel, and after entering the air intake channel, it will be stirred by the drive fan and mixed with other exhaust gases.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when tetrachloroethylene exhaust gas enters the casing, the airflow drives the drive fan and drive rod to rotate. The centrifugal force generated during the rotation of the drive rod causes the counterweight ball to move in all directions and drives the centrifugal rod to retract inward. The centrifugal rod then drives the sliding block to slide towards the fixed block. During the sliding process, the rotating block pushes the sliding sleeve to move to the right along the support ring. The drive column then drives the rotating rod to rotate counterclockwise through the drive groove. The rotating rod then drives the semi-enclosed adjustment plate to rotate counterclockwise, expanding the area of ​​the desorption zone. As the exhaust fan speed increases and the air volume of tetrachloroethylene entering the casing increases, the rotation range of the semi-enclosed adjustment plate becomes larger, resulting in a larger desorption zone area and a stronger desorption effect on the zeolite rotor. This effectively prevents the problem of insufficient desorption efficiency in the desorption zone when purifying ultra-high volume tetrachloroethylene exhaust gas.

[0017] 2. In this invention, when the tetrachloroethylene exhaust gas passes through the centrifugal rod, it will be agitated by the centrifugal rod and the counterweight ball, so that the toxic substances in the exhaust gas are fully and evenly mixed with the air. This allows the toxic substances in the exhaust gas to be evenly distributed when passing through the zeolite rotor, thereby improving the purification quality. Furthermore, as the exhaust fan speed increases, the air volume of tetrachloroethylene entering the casing will be higher, and the speed of the drive fan and drive rod will be faster. The counterweight ball will be thrown to a wider range, thus increasing the agitation range of the exhaust gas. This achieves the effect of automatically adjusting the agitation range according to the exhaust gas air volume.

[0018] 3. In this invention, cold air passes through the zeolite rotor in the cooling zone to cool the zeolite rotor, restoring it to a suitable adsorption operating temperature. After passing through the zeolite rotor, the gas will carry out a small amount of toxic substances that have not been completely desorbed. The toxic substances will follow the airflow along the guide pipe and finally be discharged into the air intake channel for secondary purification, thereby effectively improving the purity of tetrachloroethylene tail gas purification. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the overall appearance of the present invention; Figure 2 This is a cross-sectional view of the housing of the present invention; Figure 3 This is a schematic diagram of the desorption assembly and cooling assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the semi-enclosed adjustment plate of the present invention; Figure 5 This is a schematic diagram of the control component structure of the present invention; Figure 6 This is a schematic diagram of the enlarged structure of the control component of the present invention; Figure 7 This is a schematic diagram of the drive component structure of the present invention; Figure 8This is a cross-sectional view of the sliding sleeve of the present invention.

[0020] In the diagram: 1. Housing; 11. Inlet channel; 12. Pre-filter layer; 13. Outlet; 14. Exhaust fan; 15. Support frame; 2. Zeolite rotor; 3. Adsorption zone; 4. Drive motor; 5. Incinerator; 6. Fixed ring pipe; 7. Desorption assembly; 71. Baffle; 72. Fixing plate; 73. Support sleeve; 74. Rotating rod; 75. Connecting block; 76. Semi-enclosed adjusting plate; 77. Elastic element one; 78. Hot air duct; 79. Connecting pipe; 710. Baffle; 8. Control assembly; 81. Installation. 82. Plate; 83. Drive rod; 84. Drive fan; 85. Fixed block; 86. Sliding block; 87. Guide cone; 88. Push rod; 89. Push block; 80. Rotating block; 810. Centrifugal rod; 811. Rotating shaft; 812. Counterweight ball; 813. Elastic element 2; 814. Drive component; 815. Drive groove; 816. Support rod; 817. Support ring; 818. Sliding sleeve; 819. Drive column; 90. Cooling assembly; 91. Semi-enclosed connecting plate; 92. Cold air duct; 93. Guide tube. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 8 This invention provides a device for the harmless treatment of tetrachloroethylene tail gas, the technical solution of which is as follows: Reference Figure 1 and Figure 2A harmless exhaust gas treatment device for tetrachloroethylene includes a housing 1, an air inlet channel 11, a pre-filter layer 12, an outlet 13, an exhaust fan 14, a support frame 15, a zeolite rotor 2, an adsorption zone 3, a drive motor 4, an incinerator 5, a fixed ring pipe 6, a desorption assembly 7, a control assembly 8, and a cooling assembly 9. The air inlet channel 11 is located on the left side of the housing 1, the pre-filter layer 12 is tightly connected to the air inlet channel 11, the outlet 13 is located on the right side of the housing 1, the exhaust fan 14 is tightly installed at the outlet 13, the support frame 15 is tightly connected to the middle of the housing 1, the zeolite rotor 2 is rotatably connected to the support frame 15, and the adsorption zone 3 occupies the entire area of ​​the zeolite rotor 2. The surface area always exceeds half of the casing. The drive motor 4 is firmly connected to the casing 1. The output end of the drive motor 4 is connected to the outer ring of the zeolite rotor 2 via chain drive. The fixed ring tube 6 is fixedly connected to both sides of the support frame 15 via connecting rods. The desorption assembly 7 is located on both sides of the zeolite rotor 2 and is slidably connected to the inner wall of the fixed ring tube 6. The desorption assembly 7 is also connected to the incinerator 5. The control assembly 8 is located at the air inlet channel 11 and extends into the casing 1. The cooling assembly 9 is located on both sides of the zeolite rotor 2 and is located beside the desorption assembly 7. The cooling assembly 9 is also connected to the air inlet channel 11. During the purification process, under the operation of the exhaust fan 14, tetrachloroethylene tail gas will enter the casing 1 from the air inlet channel 11. Before entering the casing 1, the gas passes through a pre-filter layer 12 to intercept particulate matter. Then, the tetrachloroethylene exhaust gas passes through the adsorption zone 3 and then through the zeolite rotor 2. When the exhaust gas passes through the zeolite rotor 2, the zeolite molecular sieve inside the zeolite rotor 2 adsorbs harmful substances in the exhaust gas, while the clean air is directly discharged from the final outlet 13. During the adsorption and purification process of the zeolite rotor 2, it is constantly rotated by the drive motor 4. In order to maintain the adsorption capacity of the zeolite rotor 2, a high-temperature airflow passes through the desorption component 7 through the zeolite rotor 2, destroying the adsorption force between the molecular sieve inside the zeolite rotor 2 and the harmful substances. This causes the captured harmful substances to be discharged into the incinerator 5 along with the airflow. The extremely high temperature inside the incinerator 5 will destroy the toxic substances. The gas is incinerated for harmless treatment, while the cooling component 9 cools down the zeolite rotor 2, which has been heated by the desorption component 7, so that the zeolite rotor 2 returns to the appropriate adsorption working temperature. When the exhaust fan 14 speed increases to purify a larger volume of tetrachloroethylene tail gas, the control component 8 will automatically adjust to increase the area of ​​the desorption component 7 due to the wind speed, thereby increasing the desorption time of the zeolite rotor 2 through the desorption component 7. This prevents the zeolite rotor 2 from entering the adsorption zone 3 before being completely desorbed when purifying a larger volume of tetrachloroethylene tail gas, which would result in poor adsorption capacity and affect the purification effect. At the same time, the control component 8 can also mix and stir the gas before it enters the zeolite rotor 2 for purification, thereby improving the uniformity of the mixing of harmful substances in the gas.

[0023] Reference Figure 3 and Figure 4 The desorption assembly 7 includes a partition 71, a fixing plate 72, a support sleeve 73, a rotating rod 74, a connecting block 75, a semi-enclosed adjusting plate 76, an elastic element 77, a hot air pipe 78, and a connecting pipe 79. The partition 71, the fixing plate 72, and the fixing ring pipe 78 are fixedly connected. The support sleeve 73 is fixedly connected below the partition 71 and the fixing plate 72, and passes through the center of the zeolite rotor 2 and is rotatably connected to the zeolite rotor 2. The rotating rod 74 is rotatably connected to the support sleeve 73, and both ends of the rotating rod 74 extend out of the support sleeve 73. The semi-enclosed adjusting plate 76 is fixedly connected to the rotating rod 74 through the connecting block 75. One end of the elastic element 77 is fixedly connected to the fixing plate 72, and the other end is fixedly connected to the semi-enclosed adjusting plate 79. Plate 76 is fixedly connected. The area between the semi-enclosed adjusting plate 76, partition plate 71, and fixed plate 72 is the desorption zone. The hot air pipe 78 is connected to the right desorption zone of the zeolite rotor 2. The connecting pipe 79 is connected between the incinerator 5 and the left desorption zone of the zeolite rotor 2. While purifying tetrachloroethylene tail gas, the zeolite rotor 2 is blown by the fan into the hot air pipe 78, passes through the zeolite rotor 2, and then is finally discharged into the incinerator 5 through the connecting pipe 79. The hot air flow then desorbs the zeolite rotor 2 that has passed through the desorption zone, destroying the adsorption force between the molecular sieve and harmful substances in the zeolite rotor 2, causing harmful molecules to fall off the zeolite rotor 2 and enter the incinerator 5 with the hot air flow. The toxic substances can be rendered harmless through the ultra-high temperature incineration of the incinerator 5.

[0024] Reference Figure 2 A baffle 710 is also fixedly connected between the fixed ring pipe 6 and the housing 1. The baffle 710 is located at the fixed ring pipe 6 on the left side of the zeolite rotor 2. Since the zeolite rotor 2, the support frame 15, and the baffle 710 are all rotatably connected, the baffle 710 can prevent the tetrachloroethylene tail gas entering the housing 1 from leaking and escaping from the zeolite rotor 2 and the support frame 15 without being purified.

[0025] Reference Figure 5 and Figure 6The control component 8 includes a mounting plate 81, a drive rod 82, a drive fan 83, a fixing block 84, a sliding block 85, a push rod 86, a push block 87, a centrifugal rod 88, a rotating shaft 89, a counterweight ball 810, an elastic element 811, and a drive component 812. The mounting plate 81 is fixedly connected to the air intake channel 11, the drive rod 82 is rotatably connected to the mounting plate 81, the right end of the drive rod 82 extends into the housing 1, the drive fan 83 is fixedly connected to the drive rod 82, the fixing block 84 is fixedly connected to the right end of the drive rod 82, and the sliding block 85 is sleeved on the outside of the drive rod 82 and slidably connected to the drive rod 82. The push rod 86 is fixedly connected to the sliding block 85, and the push rod 86 passes through the fixed block 84 and is slidably connected to the fixed block 84. The push block 87 is fixedly connected to the right end of the push rod 86. The middle part of the centrifugal rod 88 is hinged to each other by the rotating shaft 89. The left end of the centrifugal rod 88 is hinged to the sliding block 85, and the right end of the centrifugal rod 88 is hinged to the fixed block 84. The counterweight ball 810 is fixedly connected to the rotating shaft 89. The elastic element 811 is sleeved on the outside of the drive rod 82 and is located between the fixed block 84 and the sliding block 85. The drive element 812 is located at the left end of the rotating rod 74. When the tetrachloroethylene tail gas enters the casing 1, it will first pass through... The airflow passes through the drive fan 83, causing it to rotate. The rotating drive fan 83 then drives the drive rod 82 to rotate. The centrifugal force generated during the rotation of the drive rod 82 causes the counterweight ball 810 to move outwards in a diffuse manner. As the counterweight ball 810 moves outwards, it causes the centrifugal rod 88 to retract inwards. The centrifugal rod 88 then causes the sliding block 85 to slide against the elastic element 811 and towards the fixed block 84. During the sliding process, the sliding block 85 also comes into contact with the drive element 812 through the push rod 86 and the push block 87, thereby causing the drive element 812 to drive the semi-enclosed adjusting plate 76 to rotate and open along the rotating rod 74. This increases the area of ​​the desorption zone, and when the tetrachloroethylene exhaust gas passes through the centrifugal rod 88, it will be agitated by the centrifugal rod 88 and the counterweight ball 810, so that the toxic substances in the exhaust gas are fully and evenly mixed with the air, and the toxic substances in the exhaust gas can be evenly distributed when passing through the zeolite rotor 2, thereby improving the purification quality. Furthermore, as the speed of the exhaust fan 14 increases, the air volume of tetrachloroethylene entering the casing 1 will be higher, and the speed of the drive fan 83 and the drive rod 82 will be faster, and the counterweight ball 810 will be thrown to a greater extent, thereby increasing the range of exhaust gas agitation and achieving the effect of automatically adjusting the agitation range according to the exhaust gas air volume.

[0026] Reference Figure 6A rotating block 871 is also provided on the right side of the pushing block 87, and the rotating block 871 is rotatably connected to the pushing block 87. Since the driving rod 82, the sliding block 85 and the pushing block 87 are always rotating as a whole during operation, the setting of the rotating block 871 allows the pushing block 87 to abut against the driving member 812 through the rotating block 871. In this way, the axial connection between the rotating block 871 and the pushing block 87 can be used to reduce the influence on the rotational force of the driving rod 82 and prevent the pushing block 87 from directly abutting against the driving member 812, which would generate a large frictional force that would affect the rotation of the driving rod 82.

[0027] Reference Figure 6 The left side of the sliding block 85 is also fixedly connected to a guide cone 851, the diameter of which gradually increases from left to right; the guide cone 851 can use its own cone shape to guide the exhaust gas flow to the mixing and stirring area where the centrifugal rod 88 and the counterweight ball 810 are located.

[0028] Reference Figure 7 and Figure 8 The driving component 812 includes a driving groove 8121, a support rod 8122, a support ring 8123, a sliding sleeve 8124, and a driving column 8125. The driving groove 8121 is spirally formed on the outer wall of the left end of the rotating rod 74. The support rod 8122 is fixedly connected to the top of the inner casing 1. The support ring 8123 is fixedly connected to the bottom end of the support rod 8122. The sliding sleeve 8124 is slidably connected to the support ring 8123. The driving column 8125 is fixedly connected to the right side of the sliding sleeve 8124. The bottom end of the driving column 8125 is located inside the driving groove 8121 and is slidably connected to the driving groove 8121. When the driving fan 83 and the driving rod 82 rotate, the counterweight ball 810 is subjected to centrifugal force and pulls the sliding block 85 through the centrifugal rod 88, causing the sliding block 85 to push... When the moving block 87 and the rotating block 871 slide to the right, the rotating block 871 will push the sliding sleeve 8124 to move to the right along the support ring 8123, thereby pushing the drive column 8125 to move linearly to the right. The drive column 8125 will drive the rotating rod 74 to rotate counterclockwise through the drive groove 8121. In turn, the rotating rod 74 will drive the semi-enclosed adjusting plate 76 to rotate counterclockwise, expanding the area of ​​the desorption zone. As the speed of the exhaust fan 14 increases, the air volume of tetrachloroethylene entering the casing 1 increases, the rotation range of the semi-enclosed adjusting plate 76 becomes larger, and the area of ​​the desorption zone becomes larger, resulting in a stronger desorption effect on the zeolite rotor 2. This can effectively prevent the problem of insufficient desorption efficiency in the desorption zone when purifying tetrachloroethylene exhaust gas with ultra-high air volume.

[0029] Reference Figure 3 and Figure 4The cooling assembly 9 includes a semi-enclosed connecting plate 91, a cold air duct 92, and a guide pipe 93. The semi-enclosed connecting plate 91 is fixedly connected to the partition plate 71, the fixed ring pipe 6, and the support sleeve 73. The area between the semi-enclosed connecting plate 91 and the partition plate 71 is a cooling zone. The cold air duct 92 is connected to the cooling zone on the right side of the zeolite rotor 2. The guide pipe 93 is connected between the cooling zone and the air intake channel 11. When purifying tetrachloroethylene tail gas, the cold air duct 92 will receive cold air continuously blown in by the blower. The cold air then passes through the zeolite rotor 2 in the cooling zone to cool the zeolite rotor 2, restoring it to a suitable adsorption working temperature. The gas passing through the zeolite rotor 2 will carry out a small amount of toxic substances that have not been completely desorbed. The toxic substances will follow the airflow along the guide pipe 93 and finally be discharged into the air intake channel 11 for secondary purification, thereby effectively improving the purity of the tetrachloroethylene tail gas purification.

[0030] Reference Figure 2 The connection between the guide pipe 93 and the air intake channel 11 is located on the left side of the drive fan 83; the guide pipe 93 discharges slightly concentrated exhaust gas into the air intake channel 11, and after entering the air intake channel 11, it will be stirred by the drive fan 83 and mixed with other exhaust gases.

[0031] Working principle: During the purification process, under the operation of the exhaust fan 14, the tetrachloroethylene exhaust gas will enter the housing 1 from the air inlet channel 11. Before entering the housing 1, it will pass through the pre-filter layer 12 to intercept the particulate matter in the gas. Then, the tetrachloroethylene exhaust gas will pass through the zeolite rotor 2 from the adsorption zone 3. When the exhaust gas passes through the zeolite rotor 2, the zeolite molecular sieve in the zeolite rotor 2 will adsorb the harmful substances in the exhaust gas, and the clean air will be directly discharged from the final outlet 13. During the adsorption and purification process, the zeolite rotor 2 is constantly rotating under the drive of the motor 4. To maintain the adsorption capacity of the zeolite rotor 2, a high-temperature hot airflow is blown in through the hot air pipe 78 by the fan, passes through the zeolite rotor 2, and then is finally discharged into the incinerator 5 through the connecting pipe 79. The hot airflow then desorbs the zeolite rotor 2 in the desorption zone, breaking the adsorption force between the molecular sieve and harmful substances in the zeolite rotor 2, causing harmful molecules to detach from the zeolite rotor 2 and enter the incinerator 5 with the hot airflow. After being purified by the ultrafiltration process in the incinerator 5... High-temperature incineration can render toxic substances harmless; at the same time, cold air will be continuously blown in by the blower at the cold air duct 92, and then the cold air will pass through the zeolite rotor 2 in the cooling zone to cool the zeolite rotor 2, so that the zeolite rotor 2 returns to the working temperature suitable for adsorption. The gas passing through the zeolite rotor 2 will carry out a small amount of toxic substances that have not been completely desorbed. The toxic substances will follow the airflow along the guide pipe 93 and finally be discharged into the air intake channel 11 for secondary purification, thereby effectively improving the purity of tetrachloroethylene tail gas purification. When the tetrachloroethylene exhaust gas enters the casing 1, it first passes through the drive fan 83, which then drives the drive fan 83 to rotate. The rotating drive fan 83 drives the drive rod 82 to rotate. The centrifugal force generated during the rotation of the drive rod 82 causes the counterweight ball 810 to move outwards in a diffuse manner. As the counterweight ball 810 moves outwards, it causes the centrifugal rod 88 to retract inwards. The centrifugal rod 88 then causes the sliding block 85 to slide against the thrust of the elastic element 811 towards the fixed block 84. During the sliding process, the rotating block 871 pushes the sliding sleeve 8124 to move to the right along the support ring 8123, thereby driving the drive rod 82 to rotate. The moving column 8125 moves linearly to the right, and the driving column 8125 drives the rotating rod 74 to rotate counterclockwise through the driving groove 8121. In turn, the rotating rod 74 drives the semi-enclosed adjusting plate 76 to rotate counterclockwise, expanding the area of ​​the desorption zone. As the speed of the exhaust fan 14 increases, the air volume of tetrachloroethylene entering the casing 1 increases, the rotation range of the semi-enclosed adjusting plate 76 becomes larger, and the area of ​​the desorption zone becomes larger, resulting in a stronger desorption effect on the zeolite rotor 2. This effectively prevents the problem of insufficient desorption efficiency in the desorption zone when purifying tetrachloroethylene exhaust gas with ultra-high air volume. Furthermore, when the tetrachloroethylene exhaust gas passes through the centrifugal rod 88, it will be agitated by the centrifugal rod 88 and the counterweight ball 810, so that the toxic substances in the exhaust gas are fully mixed with the air, and the toxic substances in the exhaust gas can be evenly distributed when passing through the zeolite rotor 2, thereby improving the purification quality. As the speed of the exhaust fan 14 increases, the air volume of tetrachloroethylene entering the casing 1 will be higher, and the speed of the drive fan 83 and drive rod 82 will be faster. The counterweight ball 810 will be thrown to a greater extent, thereby increasing the range of exhaust gas agitation. This achieves the effect of automatically adjusting the agitation range according to the exhaust gas air volume.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for treating the harmless exhaust gas of tetrachloroethylene, characterized in that: The harmless exhaust gas treatment equipment includes a housing (1), an air inlet channel (11), a pre-filter layer (12), an outlet (13), an exhaust fan (14), a support frame (15), a zeolite rotor (2), an adsorption zone (3), a drive motor (4), an incinerator (5), a fixed ring pipe (6), a desorption assembly (7), a control assembly (8), and a cooling assembly (9). The air inlet channel (11) is located on the left side of the housing (1), the pre-filter layer (12) is tightly connected to the air inlet channel (11), the outlet (13) is located on the right side of the housing (1), the exhaust fan (14) is tightly installed at the outlet (13), the support frame (15) is tightly connected to the middle of the housing (1), and the zeolite rotor (2) is rotatably connected to the support frame (15). The adsorption zone (3) always accounts for more than half of the total area of ​​the zeolite rotor (2). The drive motor (4) is fixedly connected to the housing (1). The output end of the drive motor (4) is connected to the outer ring of the zeolite rotor (2) via chain drive. The fixed ring tube (6) is fixedly connected to both sides of the support frame (15) via connecting rods. The desorption component (7) is located on both sides of the zeolite rotor (2) and is slidably connected to the inner wall of the fixed ring tube (6). The desorption component (7) is connected to the incinerator (5). The control component (8) is set at the air inlet channel (11) and extends into the housing (1). The cooling component (9) is located on both sides of the zeolite rotor (2) and is set next to the desorption component (7). The cooling component (9) is connected to the air inlet channel (11). The desorption assembly (7) includes a partition (71), a fixing plate (72), a support sleeve (73), a rotating rod (74), a connecting block (75), a semi-enclosed adjusting plate (76), an elastic element (77), a hot air pipe (78), and a connecting pipe (79); the partition (71), the fixing plate (72), and the fixing ring pipe (6) are fixedly connected to each other, the support sleeve (73) is fixedly connected below the partition (71) and the fixing plate (72), and the support sleeve (73) passes through the center of the zeolite wheel (2) and is rotatably connected to the zeolite wheel (2), the rotating rod (74) and the support sleeve (75) are connected to the support sleeve (76). 73) Rotary connection, and the two ends of the rotating rod (74) extend out of the support sleeve (73). The semi-enclosed adjustment plate (76) is fixedly connected to the rotating rod (74) through the connecting block (75). One end of the elastic element (77) is fixedly connected to the fixed plate (72), and the other end is fixedly connected to the semi-enclosed adjustment plate (76). The area between the semi-enclosed adjustment plate (76), the partition plate (71), and the fixed plate (72) is the desorption zone. The hot air pipe (78) is connected to the right desorption zone of the zeolite rotor (2). The connecting pipe (79) is connected between the incinerator (5) and the left desorption zone of the zeolite rotor (2).

2. The tetrachloroethylene harmless tail gas treatment equipment according to claim 1, characterized in that: A baffle (710) is also fixedly connected between the fixed ring tube (6) and the housing (1). The baffle (710) is located at the fixed ring tube (6) on the left side of the zeolite rotor (2).

3. The tetrachloroethylene harmless tail gas treatment equipment according to claim 2, characterized in that: The control component (8) includes a mounting plate (81), a drive rod (82), a drive fan (83), a fixing block (84), a sliding block (85), a push rod (86), a push block (87), a centrifugal rod (88), a rotating shaft (89), a counterweight ball (810), an elastic element two (811), and a drive component (812); the mounting plate (81) is fixedly connected to the air intake channel (11), the drive rod (82) is rotatably connected to the mounting plate (81), the right end of the drive rod (82) extends into the housing (1), the drive fan (83) is fixedly connected to the drive rod (82), the fixing block (84) is fixedly connected to the right end of the drive rod (82), and the sliding block (85) is sleeved on the outside of the drive rod (82) and The push rod (86) is slidably connected to the drive rod (82), the push rod (86) is fixedly connected to the sliding block (85), and the push rod (86) passes through the fixed block (84) and is slidably connected to the fixed block (84). The push block (87) is fixedly connected to the right end of the push rod (86). The middle part of the centrifugal rod (88) is hinged to each other by the rotating shaft (89). The left end of the centrifugal rod (88) is hinged to the sliding block (85), and the right end of the centrifugal rod (88) is hinged to the fixed block (84). The counterweight ball (810) is fixedly connected to the rotating shaft (89). The elastic element (811) is sleeved on the outside of the drive rod (82) and located between the fixed block (84) and the sliding block (85). The drive element (812) is located at the left end of the rotating rod (74).

4. The tetrachloroethylene harmless tail gas treatment equipment according to claim 3, characterized in that: A rotating block (871) is also provided on the right side of the push block (87), and the rotating block (871) is rotatably connected to the push block (87).

5. The tetrachloroethylene harmless tail gas treatment equipment according to claim 4, characterized in that: A guide cone (851) is also fixedly connected to the left side of the sliding block (85), and the diameter of the guide cone (851) gradually increases from left to right.

6. The tetrachloroethylene harmless tail gas treatment equipment according to claim 5, characterized in that: The driving component (812) includes a driving groove (8121), a support rod (8122), a support ring (8123), a sliding sleeve (8124), and a driving column (8125). The driving groove (8121) is spirally formed on the outer wall of the left end of the rotating rod (74). The support rod (8122) is fixedly connected to the top of the inner casing (1). The support ring (8123) is fixedly connected to the bottom end of the support rod (8122). The sliding sleeve (8124) is slidably connected to the support ring (8123). The driving column (8125) is fixedly connected to the right side of the sliding sleeve (8124). The bottom end of the driving column (8125) is located in the driving groove (8121) and is slidably connected to the driving groove (8121).

7. The tetrachloroethylene harmless tail gas treatment equipment according to claim 6, characterized in that: The cooling assembly (9) includes a semi-enclosed connecting plate (91), a cold air duct (92), and a guide pipe (93); the semi-enclosed connecting plate (91) is fixedly connected to the partition plate (71), the fixed ring pipe (6), and the support sleeve (73). The area between the semi-enclosed connecting plate (91) and the partition plate (71) is a cooling zone. The cold air duct (92) is connected to the cooling zone on the right side of the zeolite rotor (2). The guide pipe (93) is connected between the cooling zone and the air intake channel (11).

8. The tetrachloroethylene harmless tail gas treatment equipment according to claim 7, characterized in that: The connection point between the guide tube (93) and the air intake channel (11) is located to the left of the drive fan (83).

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