Normal-temperature catalytic treatment device and method for organic waste gas in casting cooling section

Abstract

The invention discloses a normal-temperature catalytic treatment device and method for organic waste gas in a casting cooling section. The gas inlet end of the catalysis tower is connected with the gas exhaust end of the cloth bag dust removal mechanism through a pipeline, and a catalyst layer is arranged in the catalysis tower; the gas inlet end of the oxidation tower is connected with the gas outlet end of the catalysis tower through a pipeline; the gas inlet end of the exhaust cylinder is connected with the gas outlet end of the oxidation tower through a pipeline; the liquid outlet end of the water tank is connected with the liquid inlet end of the oxidation tower through a pipeline and a pump body; and the output end of the ozone generator is connected with the ozone inlet end in the catalytic tower through a pipeline. According to the organic waste gas treatment device, the cloth bag dust removal mechanism is arranged, dust removal treatment is conducted on organic waste gas before the organic waste gas enters the catalysis tower, particulate matter in the organic waste gas is removed, the catalysis effect is guaranteed, damage to a catalyst in the catalysis tower is avoided, and the overall treatment effect of the organic waste gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of organic waste gas treatment, and in particular to a device and method for catalytic treatment of organic waste gas from a casting cooling section at room temperature. Background Art

[0002] The organic waste gas from the cooling section of castings is a variety of organic substances such as benzene, phenolic compounds, aldehydes and ketones, naphthalene, alkanes, and olefins produced by the partial pyrolysis of organic substances such as phenolic resin, isocyanate, and coal powder, an additive for wet sand, in the mold, when they come into contact with high-temperature molten metal and are heated. The organic waste gas from the cooling section has a high concentration, complex composition, and a strong, pungent, and smoky smell, which seriously pollutes the environment and needs to be treated.

[0003] The conventional room-temperature catalytic treatment of organic waste gas from the cooling section of a casting usually involves inputting the organic waste gas into a catalytic tower, and then inputting the waste gas into an oxidation tower after catalytic oxidation treatment with ozone and a catalyst, and then discharging the waste gas through a spraying liquid spraying treatment. Although this method can remove organic waste gas from the cooling section of a casting, it still has the following defects when used: the organic waste gas is input into the catalytic tower without being treated, and the particulate matter in the waste gas not only affects the catalytic effect, but may also damage the catalyst in the catalytic tower. To this end, we propose a room-temperature catalytic treatment device and method for organic waste gas from the cooling section of a casting. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for catalytic treatment of organic waste gas in a casting cooling section at room temperature, so as to solve the problem in the above background technology that the organic waste gas is directly input into the catalytic tower without being treated, and the particulate matter in the waste gas affects the catalytic effect and damages the catalyst in the catalytic tower.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for catalytic treatment of organic waste gas at room temperature in a casting cooling section, comprising:

[0007] Bag dust removal mechanism to remove dust from organic waste gas;

[0008] A catalytic tower, the air inlet end of which is connected to the exhaust end of the bag dust removal mechanism through a pipeline, and a catalyst layer is provided in the catalytic tower;

[0009] An oxidation tower, the air inlet end of which is connected to the exhaust end of the catalytic tower through a pipeline;

[0010] An exhaust pipe, the air inlet end of which is connected to the air outlet end of the oxidation tower through a pipeline;

[0011] A water tank storing spray liquid, wherein the liquid outlet of the water tank is connected to the liquid inlet of the oxidation tower through a pipeline and a pump body; and

[0012] The ozone generator has an output end connected to an ozone inlet end of the catalytic tower through a pipeline.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) The present invention is provided with a bag dust removal mechanism to remove dust from the organic waste gas before it enters the catalytic tower, thereby removing particulate matter in the organic waste gas, ensuring the catalytic effect, avoiding damage to the catalyst in the catalytic tower, and improving the overall treatment effect of the organic waste gas;

[0015] 2) The present invention can be carried out at room temperature, and the organic waste gas is catalytically oxidized by a catalytic tower in combination with an ozone generator, and then enters the oxidation tower for further absorption and treatment by the spray liquid, which can improve the degradation efficiency, without secondary pollution, and has a good treatment effect on the organic waste gas. At the same time, ozone can be fully utilized, and the spray water can be recycled, thereby reducing energy consumption and treatment costs;

[0016] 3) The bag dust removal mechanism of the present invention can discharge the particulate matter filtered out of the bag dust removal part, and when discharging the particulate matter, the bag body can be intermittently driven to move by the cooperation of the rotating device 2, the eccentric disk, the connecting frame and the dust discharge pipe 2 to shake off the particulate matter remaining in the bag body, thereby ensuring the filtering quality of the bag body for long-term use;

[0017] 4) The present invention can detect the state of the bag body through the detection sensor. When the bag body is damaged, the detection sensor detects that the exhaust dust data flowing in the corresponding dust exhaust pipe exceeds the threshold value and then controls the corresponding reminder to work, which is convenient for the user to control the rotating device 2 so that the bag dust removal part that needs to be replaced corresponds to the opening. The fixing mechanism is controlled to release the fixation of the bag dust removal part and replace the damaged bag dust removal part from the opening. It is easy to use and extends the service life of the bag dust removal mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the processing device of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the bag dust removal mechanism in the present invention;

[0020] Figure 3 For the present invention Figure 2 Structural cross-section view;

[0021] Figure 4 The schematic diagram of the structure of the bag dust removal unit in the present invention is

[0022] Figure 5 A bottom view of the bearing column structure of the present invention;

[0023] Figure 6 It is a top view of the bearing column structure of the present invention.

[0024] In the figure: 100, bag dust removal mechanism; 101, shell; 102, bearing column; 103, limit ring; 104, gas flow cavity; 105, assembly port; 106, bag body; 107, top support ring; 108, bottom support ring; 109, dust exhaust pipe 1; 110, guide rod; 111, convex part; 112, exhaust pipe 1; 113, detection sensor; 114, exhaust pipe 2; 115, transparent window; 1 16. Reminder; 117. Dust exhaust pipe 2; 118. Connecting frame; 119. Rotating device 1; 120. Rotating device 2; 121. Eccentric disk; 122. Insert block; 123. Inlet pipe; 124. Cover plate; 125. Push block; 126. Arc-shaped part; 200. Catalytic tower; 300. Oxidation tower; 400. Exhaust pipe; 500. Water tank; 600. Fan; 700. Ozone generator; 800. Pump body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please see attached Figure 1

[0028] A device for catalytic treatment of organic waste gas at room temperature in a casting cooling section, comprising:

[0029] The bag dust removal mechanism 100 removes dust from the organic waste gas and removes particulate matter in the organic waste gas;

[0030] The catalytic tower 200, whose air inlet end (located at the top of the catalytic tower 200) is connected to the exhaust end of the bag dust removal mechanism 100 through a pipeline, is a conventional device in the art, and is provided with a catalyst layer in the catalytic tower 200, which is composed of a carrier-loaded metal oxide, and the carrier includes clay, molecular sieve, ceramsite, and activated carbon macroporous materials; the metal oxide loaded on the catalyst surface includes one or more of aluminum oxide, manganese oxide, iron oxide, tin oxide, silver oxide and other transition metal oxides; preferably, it is a multi-metal catalyst;

[0031] The oxidation tower 300, whose air inlet end (located at the bottom of the oxidation tower 300) is connected to the exhaust end (located at the top of the catalytic tower 200) through a pipeline, the oxidation tower 300 is a conventional device in the art, and the top of its inner cavity has a nozzle for spraying a spray liquid;

[0032] The exhaust pipe 400, whose air inlet end is connected to the air outlet end of the oxidation tower 300 through a pipeline, is used to discharge the purified organic waste gas;

[0033] The water tank 500 stores the spray liquid. The liquid outlet of the water tank 500 is connected to the liquid inlet of the oxidation tower 300 through a pipeline and a pump body 800. A catalyst may also be provided in the water tank, which is specifically connected to the nozzle of the oxidation tower 300. The liquid inlet of the water tank 500 is connected to the liquid outlet (located at the bottom of the oxidation tower 300) of the oxidation tower 300 through a pipeline; and,

[0034] The ozone generator 700 has an output end connected to the ozone inlet end (located at the bottom of the catalytic tower 200) and the aeration element in the catalytic tower 200 through pipelines. The upward ozone passes through the catalyst layer to generate superoxide free radicals and hydroxyl free radicals with oxidizing properties, and utilizes its strong oxidizing property to decompose various organic pollutants in the downward organic waste gas into carbon dioxide and water. Subsequently, the excess ozone and intermediate products are discharged from the exhaust end of the catalytic tower 200 into the oxidation tower 300; the aeration element is located in the water tank 500, and the aeration element is, for example, an aeration pipe, which is used to supply ozone to the spray liquid in the water tank 500. At the same time, the excess ozone liquid entering the oxidation tower 300 enters the water tank 500, which not only activates the spray liquid, effectively improves the odor control effect, but also reduces the waste of ozone.

[0035] Preferably, in this embodiment, fans 600 are provided on the pipeline connecting the catalytic tower 200 and the bag dust removal mechanism 100, the pipeline connecting the catalytic tower 200 and the oxidation tower 300, and the pipeline connecting the oxidation tower 300 and the exhaust pipe 400.

[0036] Please see attached Figure 2 -Attached Figure 3

[0037] Preferably, the bag dust removal mechanism 100 of this embodiment includes:

[0038] The shell 101 has an air inlet pipe 123 for organic waste gas to enter on its top, a sewage outlet on its bottom, and an exhaust pipe 114 for connecting to the catalytic tower 200 on its side wall; the inner cavity of the shell 101 is fixed with limit rings 103 at the top and bottom, and the outer diameter of the limit rings 103 matches the inner diameter of the shell 101. Two groups of limit rings 103 are respectively rotatably sleeved on the upper and lower ends of the bearing column 102 through bearings. The outer walls of the two groups of limit rings 103 on the opposite side, the inner wall of the shell 101, and the outer wall of the bearing column 102 form a gas flow cavity 104 connected to the exhaust pipe 114 for the flow of organic waste gas after dust removal. The bearing column 102 is penetrated by a plurality of assembly ports 105 at the top and bottom;

[0039] A plurality of bag dust removal units are respectively arranged in a plurality of assembly ports 105, the bottom of the bag dust removal units extends into a second dust exhaust pipe 117, the second dust exhaust pipe 117 is arranged at the bottom of the bearing column 102, and a solenoid valve is arranged in the second dust exhaust pipe 117; and,

[0040] A plurality of exhaust pipes 112 are disposed on the outer wall of the support column 102 and are respectively connected to the plurality of assembly ports 105;

[0041] When in use, the organic waste gas enters the shell 101 through the air inlet pipe 123, is filtered through the bag dust collector, and is discharged from the exhaust pipe 1 12 to the gas circulation chamber 104, and is then discharged to the catalytic tower 200 through the exhaust pipe 2 114; the particulate matter in the organic waste gas is filtered into the bag dust collector, and under the action of its own gravity, it moves downward to the dust exhaust pipe 2 117. By regularly opening the solenoid valve in the dust exhaust pipe 2 117, the particulate matter in the bag dust collector can be discharged from the sewage outlet to the outside of the shell 101.

[0042] Example 2

[0043] Please see attached Figure 4 -Attached Figure 6

[0044] Preferably, the bag dust removal unit of this embodiment includes:

[0045] The top support ring 107 has an outer diameter greater than the inner diameter of the assembly port 105, so that the top support ring 107 can fit the top of the bearing column 102. The top support ring 107 is connected to the bottom support ring 108 whose outer diameter matches the inner diameter of the assembly port 105 through the bag body 106. The outer diameter of the bag body 106 is smaller than the inner diameter of the assembly port 105. The organic waste gas passes through the top support ring 107 and enters the bag body 106. After being filtered by the bag body 106, it is in the assembly port 105. 05, and then discharged from the exhaust pipe 112. A dust exhaust pipe 109 is provided in the bottom support ring 108, which is connected with the bag body 106 and extends to the dust exhaust pipe 117. The outer diameter of the dust exhaust pipe 109 is adapted to the inner diameter of the dust exhaust pipe 117. The inner wall of the dust exhaust pipe 117 has an annular protrusion in contact with the bottom end of the dust exhaust pipe 109, so that the dust exhaust pipe 117 drives the dust exhaust pipe 109 upward, and a sealing ring structure can be used to seal the two; and,

[0046] A plurality of guide rods 110 are T-shaped in vertical section, connecting the top support ring 107 and the bottom support ring 108 and located outside the bag body 106 , so as to support the bag body 106 and improve the filtering effect of the bag body 106 .

[0047] Preferably, the top support ring 107 of the present embodiment is detachably fixed to the bearing column 102 by a fixing mechanism provided on the bearing column 102, a threaded through hole is provided on the top support ring 107 for the guide rod 110 to pass through, a threaded section adapted to the threaded through hole is provided on the outer wall of the guide rod 110, the bottom of the guide rod 110 is rotatably connected to the bottom support ring 108 by a bearing, a plurality of groups of convex portions 111 for pressing the cloth bag body 106 are provided on the outer wall of the guide rod 110, an elastic member for driving the guide rod 110 to reset is provided between the guide rod 110 and the top support ring 107, the elastic member, for example, comprises a limit block sleeved on the outer wall of the guide rod 110 through a bearing, and a spring sleeved on the outer wall of the guide rod 110 and located between the limit block and the top support ring 107;

[0048] The dust exhaust pipe 117 is connected to the supporting column 102 through an elastic member, such as a spring. The dust exhaust pipes 117 at the bottom of several groups of bag dust removal parts are commonly connected to a connecting frame 118. The bottom of the connecting frame 118 is slidably abutted against the eccentric disk 121 through a ball rod (a rod body with a ball embedded at one end). The eccentric disk 121 is eccentrically sleeved on the output end of a rotating device 119. The rotating device 119 is arranged on the outer wall of the shell 101. The rotating device 119 is a motor and a reducer.

[0049] When discharging particulate matter in the bag dust removal part, by opening the rotating device 119, the rotating device 119 drives the eccentric disk 121, and the eccentric disk 121 drives the ball rod to drive the connecting frame 118 to move back and forth in the gap, and then the connecting frame 118 drives the dust exhaust pipe 109 through the dust exhaust pipe 117, and the dust exhaust pipe 109 drives the bottom support ring 108, so that the bag body 106 is intermittently compressed and reset, so that the particulate matter remaining in the bag body 106 can be better separated from the bag body 106 and discharged downward. At the same time, when the bottom support ring 108 moves up and down intermittently, it also drives the guide rod 110 upward. The guide rod 110 rotates under the action of its threaded section and threaded hole, and then presses the bag body 106 through the convex portion 111 to further remove the remaining particulate matter in the bag body 106.

[0050] As a preference, the plurality of groups of bag dust removal parts of this embodiment are arranged in a circular array in the assembly opening 105 on the supporting column 102; the fixing mechanism includes:

[0051] A rotator is embedded in the center of the top of the supporting column 102, and a push block 125 is provided at its output end. The rotator is, for example, a micro servo motor; and,

[0052] The arc-shaped member 126 is sleeved on the outer side of the top support ring 107. A plurality of groups of plug-in blocks 122 are provided on the side of the arc-shaped member 126 facing the top support ring 107, and a slot for inserting the plug-in block 122 is provided on the outer wall of the top support ring 107. The movement of the top support ring 107 on the axis can be restricted by inserting the plug-in block 122 into the slot. The arc-shaped member 126 is slidably connected with the slide groove provided on the top of the bearing column 102 through a slider, and the slider and the inner wall of one side of the slide groove are connected by an elastic member. The slider and the slide groove preferably use a T-shaped slider and a T-shaped slide groove, and the elastic member preferably uses a spring to drive the slider to reset. The side of the slider away from the arc-shaped member 126 is in sliding contact with the top block 125 ; Among them, the push block 125 includes an annular portion sleeved on the output end of the rotator and a plurality of groups of arc-shaped protrusions 111 integrated in an annular array on the circumferential outer wall of the annular portion. The number of the arc-shaped protrusions 111 is the same as the number of the arc-shaped members 126. By rotating the rotator, the arc-shaped protrusions 111 correspond to the slider, and then the slider can drive the arc-shaped member 126 to be close to the corresponding top support ring 107, and the insert block 122 is inserted into the slot. When disassembling, the rotator is rotated to make the arc-shaped protrusion 111 staggered with the slider, and then the slider is reset under the action of the elastic member, so that the arc-shaped member 126 drives the insert block 122 out of the slot, and the bag dust removal part can be disassembled at this time.

[0053] Preferably, a detection sensor 113 for electrically connecting to an external controller is provided in the exhaust pipe 112 of the present embodiment. The detection sensor 113 is a dust sensor, and its model is selected according to actual conditions, which is not described in detail herein. The external controller is, for example, a PLC controller. A one-way valve is provided in the exhaust pipe 112 and on the outside of the detection sensor 113. The one-way valve is used to allow gas to enter the gas flow cavity 104 only through the exhaust pipe 112. A plurality of groups of reminders 116 electrically connected to the external controller are embedded in the outer wall of the supporting column 102. The reminder 116 is, for example, an LED alarm light. The alarm 116 corresponds to a plurality of groups of detection sensors 113 one by one, for example, there are A, B, C and D detection sensors 113 and a, b, c and d alarms 116, A, B, C and D detection sensors 113 are connected to input port 1, input port 2, input port 3 and input port 4 respectively, a, b, c and d alarms 116 are connected to output port W, output port X, output port Y and output port Z of the external controller respectively, when the exhaust gas dust data detected by the A detection sensor 113 exceeds the preset threshold, it sends a signal to the external controller, and the external controller controls the corresponding a alarm 116 to work;

[0054] The detection sensor 113 is used to detect the exhaust gas dust data discharged from the exhaust pipe 112, and send a signal to the external controller when the exhaust gas dust data exceeds the preset threshold value, so that the external controller controls the corresponding reminder 116 to work; in this way, it is convenient for users to understand the use of the bag dust removal part. When the bag body 106 is damaged, the dust content in the gas passing through the bag body 106 will exceed the preset threshold value, and then after the detection sensor 113 detects it, the corresponding reminder 116 is controlled to work through the external controller;

[0055] Preferably, a solenoid valve electrically connected to an external controller may be provided in the exhaust pipe 112. When the detection sensor 113 detects that the exhaust gas dust data exceeds a preset threshold, the external controller not only controls the corresponding reminder 116 to operate, but also controls the solenoid valve in the corresponding exhaust pipe 112, so that the gas cannot enter the gas circulation chamber 104 through the exhaust pipe 112.

[0056] A transparent window 115 is embedded in the outer wall of the housing 101 for observing the reminder 116 .

[0057] Preferably, a rotating device 120 is provided on the bottom support ring 108 of the present embodiment. The rotating device 120 is, for example, a servo motor and a reducer. The output end of the rotating device 120 is transmission-connected with the supporting column 102 for driving the supporting column 102 to rotate. Specifically, the output end of the rotating device 120 and the supporting column 102 can be transmission-connected by a gear set (two sets of meshing gears). A through opening for disassembling the bag-type dust collector is provided on the top of the shell 101. A cover plate 124 is detachably provided at the through opening. When the bag-type dust collector needs to be replaced, the cover plate 124 is opened to control the rotating device 120 to drive the supporting column 102 to rotate at a preset angle so that the bag-type dust collector to be replaced corresponds to the through opening. Then, the fixing mechanism is controlled to release the fixation, and then the bag-type dust collector to be replaced is replaced from the through opening.

[0058] A method for treating organic waste gas from a casting cooling section at room temperature by catalysis, using the above-mentioned treatment device, comprises the following steps:

[0059] S1: The organic waste gas from the casting cooling section enters the bag dust removal mechanism 100 from the air inlet pipe 123, and after the dust is removed by the bag dust removal mechanism 100, it enters the air inlet end of the catalytic tower 200 through the exhaust pipe 114 and the fan 600;

[0060] S2: The ozone generator 700 supplies ozone to the catalytic tower 200 and the aeration element, and the pump body 800 supplies the spray liquid in the water tank 500 to the nozzle of the oxidation tower 300. The organic waste gas is oxidized into harmless carbon dioxide and water in the catalytic tower 200 under the action of the ozone and the catalyst layer in the catalytic tower 200, and then enters the air inlet end of the oxidation tower 300 from the exhaust end of the catalytic tower 200 for spray treatment through the spray liquid, and is finally discharged from the exhaust pipe 400.

[0061] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for catalytic treatment of organic waste gas at room temperature in a casting cooling section, characterized in that: include: A bag dust removal mechanism (100) is used to remove dust from the organic waste gas; A catalytic tower (200), the air inlet end of which is connected to the exhaust end of the bag dust removal mechanism (100) through a pipeline, and a catalyst layer is provided in the catalytic tower (200); The oxidation tower (300) has an air inlet end connected to the exhaust end of the catalytic tower (200) through a pipeline; An exhaust pipe (400), the air inlet end of which is connected to the air outlet end of the oxidation tower (300) through a pipeline; A water tank (500) stores spray liquid, and a liquid outlet of the water tank (500) is connected to a liquid inlet of an oxidation tower (300) through a pipeline and a pump body (800); and The ozone generator (700) has its output end connected to the ozone inlet end of the catalytic tower (200) through a pipeline.

2. The processing device according to claim 1, characterized in that: A fan (600) is provided on the pipeline connecting the catalytic tower (200) and the bag dust removal mechanism (100), the pipeline connecting the catalytic tower (200) and the oxidation tower (300), and the pipeline connecting the oxidation tower (300) and the exhaust pipe (400).

3. The processing device according to claim 1, characterized in that: The bag dust removal mechanism (100) comprises: A shell (101) is provided with an air inlet pipe (123) for organic waste gas to enter at the top, a sewage outlet at the bottom, and a second exhaust pipe (114) for connecting to a catalytic tower (200) at the side wall. The inner cavity of the shell (101) is fixed with stop rings (103) at the top and bottom, and two groups of the stop rings (103) are respectively sleeved on the upper and lower ends of a supporting column (102). The outer walls of the two groups of stop rings (103) on the opposite side, the inner wall of the shell (101) and the outer wall of the supporting column (102) form a gas flow cavity (104) connected to the second exhaust pipe (114). The supporting column (102) is penetrated by a plurality of assembly ports (105) at the top and bottom. A plurality of bag dust removal units are respectively arranged in a plurality of assembly ports (105), the bottom of each bag dust removal unit extends into a second dust exhaust pipe (117), the second dust exhaust pipe (117) is arranged at the bottom of the supporting column (102), and a solenoid valve is arranged in the second dust exhaust pipe (117); and, A plurality of exhaust pipes (112) are arranged on the outer wall of the supporting column (102) and are respectively connected to the plurality of assembly ports (105).

4. The processing device according to claim 3, characterized in that: The bag dust removal unit comprises: A top support ring (107) having an outer diameter greater than an inner diameter of the assembly opening (105); the top support ring (107) is connected to a bottom support ring (108) having an outer diameter adapted to the inner diameter of the assembly opening (105) through the bag body (106); a dust exhaust pipe (109) is provided in the bottom support ring (108) and is connected to the bag body (106) and extends to a dust exhaust pipe (117); and, A plurality of guide rods (110) are connected to the top support ring (107) and the bottom support ring (108) and are located outside the cloth bag body (106).

5. The processing device according to claim 4, characterized in that: The top support ring (107) is detachably fixed to the bearing column (102) via a fixing mechanism provided on the bearing column (102); a threaded through hole for the guide rod (110) to pass through is provided on the top support ring (107); a threaded section adapted to the threaded through hole is provided on the outer wall of the guide rod (110); the bottom of the guide rod (110) is rotatably connected to the bottom support ring (108); a plurality of groups of convex portions (111) for pressing the cloth bag body (106) are provided on the outer wall of the guide rod (110); and an elastic member for driving the guide rod (110) to return to its original position is provided between the guide rod (110) and the top support ring (107); The second dust exhaust pipe (117) is connected to the supporting column (102) through an elastic member, and a plurality of groups of the second dust exhaust pipes (117) at the bottom of the bag dust removal part are connected to a connecting frame (118). The bottom of the connecting frame (118) is slidably abutted against an eccentric disk (121) through a ball rod, and the eccentric disk (121) is eccentrically sleeved on the output end of a rotating device (119), and the rotating device (119) is arranged on the outer wall of the shell (101).

6. The processing device according to claim 4, characterized in that: A plurality of groups of bag dust removal parts are arranged in a circular array in an assembly opening (105) on a bearing column (102); the fixing mechanism comprises: A rotator is embedded in the center of the top of the bearing column (102), and a push block (125) is provided at its output end; and, An arc-shaped member (126) is sleeved on the outer side of the top support ring (107); a plurality of groups of plug-in blocks (122) are provided on the side of the arc-shaped member (126) facing the top support ring (107); and a slot for inserting the plug-in blocks (122) is provided on the outer wall of the top support ring (107); the arc-shaped member (126) is slidably connected with a slide groove provided on the top of the supporting column (102) through a slider, and the slider and the inner wall of one side of the slide groove are connected by an elastic member; the side of the slider away from the arc-shaped member (126) is slidably abutted against a push block (125); wherein the push block (125) comprises an annular portion sleeved on the output end of the rotator and a plurality of groups of arc-shaped protrusions (111) integrally provided on the circumferential outer wall of the annular portion in an annular array.

7. The processing device according to claim 6, characterized in that: The exhaust pipe (112) is provided with a detection sensor (113) for electrically connecting to an external controller, the exhaust pipe (112) is provided with a one-way valve located in the exhaust pipe (112) and outside the detection sensor (113), the outer wall of the support column (102) is embedded with a plurality of groups of reminders (116) electrically connected to the external controller, the plurality of groups of reminders (116) correspond one-to-one to the plurality of groups of detection sensors (113), the detection sensor (113) is used to detect the exhaust gas dust data discharged from the exhaust pipe (112), and when the exhaust gas dust data exceeds a preset threshold value, sends a signal to the external controller, so that the external controller controls the corresponding reminder (116) to work; A transparent window (115) is embedded in the outer wall of the housing (101) for observing the reminder (116).

8. The processing device according to claim 7, characterized in that: The bottom support ring (108) is provided with a second rotating device (120), the output end of which is drivingly connected to the supporting column (102) for driving the supporting column (102) to rotate, and the top of the shell (101) is provided with a through hole for disassembling the bag dust removal part, and a cover plate (124) is detachably provided at the through hole.

9. The processing device according to claim 1, characterized in that: The output end of the ozone generator (700) is also connected to an aeration element via a pipeline, and the aeration element is located in the water tank (500). The liquid inlet end of the water tank (500) is connected to the liquid outlet end of the oxidation tower (300) via a pipeline.

10. A method for catalytic treatment of organic waste gas from a casting cooling section at room temperature, using the treatment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: the organic waste gas from the casting cooling section enters the bag dust removal mechanism (100), passes through the bag dust removal mechanism (100), and then enters the catalytic tower (200); S2: The ozone generator (700) supplies ozone to the catalytic tower (200) and the aeration element, and the pump body (800) supplies the spray liquid in the water tank (500) to the oxidation tower (300). The organic waste gas is oxidized into carbon dioxide and water by the ozone and the catalyst layer in the catalytic tower (200), and then enters the air inlet end of the oxidation tower (300) from the exhaust end of the catalytic tower (200) to be sprayed by the spray liquid, and finally discharged from the exhaust pipe (400).

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