Efficient cooling structure with filtering function

Abstract

The utility model discloses an efficient cooling structure with a filtering function, a housing is arranged on the outer side of an incineration device, a cooling cavity is formed between the housing and the incineration device, an air inlet and an air outlet which are communicated with the cooling cavity are formed in the housing, a filtering assembly comprises at least one filtering unit, and each filtering unit comprises a frame, a filtering layer and a locking piece. The frame is arranged at the air inlet of the housing, the filter layer is connected to the frame through a locking piece and covers the air inlet, the cooling assembly comprises a cooling fan and an air pipe, one end of the air pipe is arranged at the air outlet of the housing, and the other end of the air pipe is connected with the cooling fan. Compared with the prior art, the low-temperature gas can continuously make contact with the incineration device, the cooling effect on the incineration device is guaranteed, the filter unit can prevent carbon filaments in the air from entering the cooling fan to affect normal operation of the cooling fan, the filter unit can be rapidly started, or the filter layer can be disassembled and assembled, and cleaning and replacement are convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling structure for incineration devices, and in particular to a high-efficiency cooling structure with filtration function. Background Technology

[0002] Industrially mass-produced carbon fibers include polyacrylonitrile-based carbon fiber, pitch-based carbon fiber, and viscose-based carbon fiber. Among them, polyacrylonitrile-based carbon fiber has developed rapidly due to its simpler production process and better overall performance, and it holds an absolute advantage in carbon fiber production. The VOCs generated during the production of polyacrylonitrile-based carbon fiber contain hydrogen cyanide (HCN), a highly toxic substance. Emission standards for this substance are extremely stringent. To meet emission standards, hydrogen cyanide-containing VOCs are often treated using a segmented, multi-stage combustion process.

[0003] The segmented, multi-stage combustion process uses a direct-fired furnace for zoned combustion. The oxidation-reduction reaction temperature inside the furnace reaches as high as 1200℃. Due to the excessively high reaction temperature, even with a combination of high-temperature resistant, heat-insulating refractory bricks and ceramic fiber cotton, the furnace wall temperature cannot be reduced to the industrial equipment insulation standard (≤60℃). Therefore, a cooling hood is installed around the incineration equipment, using exhaust ventilation to further cool the furnace wall. However, during carbon fiber production, impurities and defects in the precursor fibers are inevitably transferred to the PAN-based carbon fibers. During pre-oxidation and carbonization, stress concentration occurs under tension. When this stress exceeds the carbon fiber's load-bearing capacity, the defective areas break, producing fuzzy fibers. These broken carbon fibers, as thin as hair, float in the air, continuously drawing carbon fibers into the air inlet of the cooling hood. This causes the carbon fibers to clog the fan, leading to fan malfunction and tripping, which in turn affects the stable operation of the waste gas treatment equipment.

[0004] In the existing technology, the solution is to equip the direct-fired furnace (incineration device) with a separate reinforced concrete structure plant to isolate it from the production equipment in order to avoid the presence of carbon filaments in the air. However, this method is expensive, and the excessively long exhaust gas inlet pipeline also leads to frequent blockages in the inlet pipeline. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency cooling structure with filtration function. The gas channel formed by the air inlet, cooling chamber, air outlet, air duct and cooling fan can continuously bring the lower temperature gas into contact with the incineration device, ensuring the cooling effect of the incineration device. Moreover, the filter unit can prevent carbon filaments in the air from entering the cooling fan and affecting its normal operation, and the filter unit can be quickly opened or the filter layer can be disassembled and installed, which is convenient for cleaning and replacement.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a high-efficiency cooling structure with filtration function, including a support frame, and:

[0007] A cover, which is mounted on the support and located outside the incineration device, forms a cooling chamber with the incineration device. The cover is provided with an air inlet and an air outlet that communicate with the cooling chamber.

[0008] A filter assembly includes at least one filter unit, the filter unit comprising a frame, a filter layer, and a locking member. The frame is disposed at an air inlet on the housing, and the filter layer is connected to the frame via the locking member and covers the air inlet.

[0009] The cooling assembly includes a cooling fan and a duct, one end of which is located at an air outlet on the housing, and the other end is connected to the cooling fan.

[0010] As a further optimization, the filtering unit has one.

[0011] As a further optimization, the filter unit has two units, which are arranged side by side. The side of each unit away from each other is hinged to the housing, and the side of each unit close to each other is connected by a connector. The hinged arrangement makes it easy for a pair of filter units to open or close the air inlet.

[0012] As a further optimization, the connector includes insert plates disposed on one side of each other on the pair of frames, the insert plates having positioning holes, and the pair of insert plates being connected by positioning posts passing through the pair of positioning holes, which facilitates the connection or separation of the pair of filter units.

[0013] As a further optimization, the air inlet and outlet are located on opposite sides of the casing, which allows the gas to have a longer flow path in the cooling chamber, so as to fully contact the incineration device and conduct heat.

[0014] As a further optimization, the air inlet is located at the lower end of the housing.

[0015] As a further optimization, the air outlet has multiple outlets, and the air duct includes a main pipe and multiple branch pipes connected to the main pipe, with the multiple branch pipes respectively connected to the multiple air outlets.

[0016] As a further optimization, the housing is equipped with a pressure sensor, which can monitor and alarm the gas pressure in the cooling chamber.

[0017] As a further optimization, the support includes a steel frame and a plurality of saddles disposed on the steel frame, with the cover disposed on the saddles.

[0018] As a further optimization, the steel frame is constructed from multiple H-beams.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The gas channel formed by the air inlet, cooling chamber, air outlet, air duct and cooling fan can continuously bring the lower temperature gas into flow contact with the incineration device, achieving efficient heat transfer and ensuring the cooling effect of the incineration device.

[0021] 2. The filter unit at the air inlet has a filter layer that can be easily removed and installed. This can prevent carbon filaments in the air from entering the cooling fan and affecting its normal operation, and also allows for quick opening of the filter unit or removal and installation of the filter layer for easy cleaning and replacement. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present invention.

[0023] Figure 2 This is a side view of the present invention.

[0024] Figure 3 This is a schematic diagram showing a state in which the filter assembly is installed on the housing in one embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram showing another state in which the filter assembly is installed on the housing in one embodiment of the present invention. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figures 1 to 3 As shown, a high-efficiency cooling structure with filtration function includes a support 10, a cover 20, a filter assembly 30, and a cooling assembly 40. The cover 20 is disposed on the support 10 and located outside the incineration device 1C, forming a cooling chamber 200 between the cover 20 and the incineration device 1C. The cover 20 is provided with an air inlet 201 and an air outlet (not shown) that communicate with the cooling chamber 200. The filter assembly 30 includes at least one filter unit 3a, preferably two filter units 3a arranged side by side. The filter unit 3a includes a frame 31, a filter layer 32, and a locking member 33. The frame 31 is disposed at the air inlet 201 on the cover 20. The filter layer 32 is connected to the frame 31 by the locking member 33 and covers the air inlet 201. The cooling assembly 40 includes a cooling fan 41 and an air duct 42. One end of the air duct 42 is disposed at the air outlet on the cover 20, and the other end is connected to the cooling fan 41.

[0028] In this invention, polyacrylonitrile-based carbon fiber is processed in production device 1A. During processing, VOCs gas containing highly toxic hydrogen cyanide (HCN) is generated and needs to be transported to incineration device 1C via waste gas pipeline 1B for combustion. To ensure that the outer wall of incineration device 1C meets industrial equipment insulation standards (≤60℃), a cooling chamber 200 is formed between the casing 20 and incineration device 1C. A cooling fan 41 draws the gas exchanging heat with incineration device 1C within the cooling chamber 200 through the air outlet via air duct 42, and utilizes negative pressure to draw lower-temperature (e.g., room temperature) gas from the external space into the cooling chamber 200 through air inlet 201. Thus, by having lower-temperature gas enter the cooling chamber 200 and higher-temperature gas exit, combustion is achieved. The device 1c continuously cools down; however, because broken carbon filaments generated during the processing of production device 1A float in the air, they can enter the cooling chamber 200 through the air inlet 201 and clog the cooling fan 41, causing fan failure. Therefore, a filter unit 3a is installed on the cover 20 at the air inlet 201. The filter layer 32 can adsorb or retain the carbon filaments to prevent them from entering the cooling chamber 200, thus preventing the carbon filaments from clogging the cooling fan 41 and ensuring the stability of the high-efficiency cooling structure with filtration function. Moreover, the filter layer 32 is fixed to the frame 31 by locking parts 33 (such as screws), which facilitates the disassembly, cleaning, or replacement of the filter layer 32. Two or more filter units 3a are provided, which can realize convenient disassembly and assembly of the filter layer 32 in local areas without affecting the operation of the overall structure. The easy replacement feature of the filter layer 32 also allows for the replacement of the filter layer 32 according to the different products processed by production device 1A. The filter layer 32 can be replaced with filter screens of different mesh sizes.

[0029] This invention utilizes a gas channel formed by the air inlet 201, cooling chamber 200, air outlet, air duct 42, and cooling fan 41 to continuously bring low-temperature gas into flow contact with the incineration device 1C, achieving efficient heat transfer and ensuring the cooling effect of the incineration device 1C. Furthermore, a filter assembly 30 (filter layer 32) that can be easily disassembled and installed is provided at the air inlet 201. This not only prevents carbon filaments in the air from entering the cooling fan 41 and affecting its normal operation, but also allows for quick disassembly and installation of the filter layer 32, facilitating cleaning and replacement.

[0030] Combination Figure 4As shown, preferably, the two side-by-side filter units 3a are hinged to the housing 20 on the side furthest from each other, and connected on the side closest to each other by a connector. That is, one end of the frame 31 of one pair of adjacent filter units 3a is connected to one end of the air inlet 201 through a hinge seat 35, and one end of the other frame 31 is connected to the other end of the air inlet 201 through a hinge seat 35. This allows for easy opening or closing of the air inlet 201 by the adjacent pair of filter units 3a. For example, when the filter layer 32 is locked to the side of the frame 31 near the cooling chamber 200, the filter layer 32 can be easily disassembled and installed by opening the filter unit 3a. Moreover, the hinged connection facilitates observation and maintenance of the housing 20 after opening, ensuring that the inside of the housing 20 is always kept clean.

[0031] Furthermore, the connector includes insert plates 341 disposed on one side of a pair of frames 31 close to each other. The insert plates 341 are provided with positioning holes. The pair of insert plates 341 are connected by positioning posts 342 passing through the pair of positioning holes. When it is necessary to open a pair of filter units 3a, the positioning posts 342 can be pulled out from the pair of positioning holes. The above-mentioned connector can facilitate the opening or closing of a pair of adjacent filter units 3a.

[0032] Of course, the filter assembly 30 may also include only one filter unit 3a, with the assembly structure of the filter unit 3a remaining unchanged, and its entirety connected to the housing 20.

[0033] Preferably, the air inlet 201 and the air outlet are located on opposite sides of the casing 20, which allows the gas to have a longer flow path in the cooling chamber 200 to make sufficient contact and heat conduction with the incineration device 1C.

[0034] Furthermore, the air inlet 201 is located at the lower end of the cover 20. The cooling fan 41 generates suction and negative pressure below the cover 20, and this location will not significantly affect the operator's comfort.

[0035] Preferably, the air outlet has multiple outlets, and the air duct 42 includes a main pipe 421 and multiple branch pipes 422 connected to the main pipe 421. The multiple branch pipes 422 are respectively connected to multiple air outlets. The multiple branch pipes 422 are respectively connected to multiple air outlets arranged at intervals on the cover 20, so that efficient gas flow can be achieved in different areas within the cooling chamber 200.

[0036] In addition, a pressure sensor 21 is provided on the housing 20, which extends into the cooling chamber 200. When a large amount of carbon filaments accumulate on the surface of the filter layer 32, the air passage area of ​​the filter layer 32 will be greatly reduced. At this time, the pressure sensor 21 will sound an alarm because the negative pressure in the housing 20 increases beyond the set value, which can remind the operator to open the filter assembly 30 to clean the filter layer 32.

[0037] The support 10 includes a steel frame 11 and multiple saddles 12 mounted on the steel frame 11. The steel frame 11 is constructed from multiple H-beams. The cover 20 is mounted on the saddles 12. The mounting of the saddles 12 ensures that there is a large air intake space below the cover 20.

[0038] Moreover, the cost of the support 10 is lower than that of a reinforced concrete factory building. The saddle 12 on the support 10 is bolted to the top surface of the steel frame 11, and the steel frames 11 are also bolted together. The installation speed is fast and the construction period is shorter than that of a reinforced concrete factory building. The support 10 is set closer to the production equipment 1A, and the distance is shorter, which can greatly reduce the difficulty of cleaning tar in the exhaust gas pipeline 1B.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency cooling structure with filtration function, comprising a support, characterized in that, Also includes: A cover, which is mounted on the support and located outside the incineration device, forms a cooling chamber with the incineration device. The cover is provided with an air inlet and an air outlet that communicate with the cooling chamber. A filter assembly includes at least one filter unit, the filter unit comprising a frame, a filter layer, and a locking member. The frame is disposed at an air inlet on the housing, and the filter layer is connected to the frame via the locking member and covers the air inlet. The cooling assembly includes a cooling fan and a duct, one end of which is located at an air outlet on the housing, and the other end is connected to the cooling fan.

2. The high-efficiency cooling structure with filtration function according to claim 1, characterized in that, The filter unit has one.

3. The high-efficiency cooling structure with filtration function according to claim 1, characterized in that, The filter unit has two units, which are arranged side by side, with the side of each unit away from the other hinged to the housing and the side of each unit close to the other connected by a connector.

4. The high-efficiency cooling structure with filtration function according to claim 3, characterized in that, The connector includes insert plates disposed on one side of each other on a pair of said frames, the insert plates having positioning holes, and the pair of said insert plates being connected by positioning posts passing through the pair of said positioning holes.

5. The high-efficiency cooling structure with filtration function according to any one of claims 1 to 4, characterized in that, The air inlet and air outlet are located on opposite sides of the casing.

6. The high-efficiency cooling structure with filtration function according to claim 5, characterized in that, The air inlet is located at the lower end of the casing.

7. The high-efficiency cooling structure with filtration function according to claim 5, characterized in that, The air outlet has multiple outlets, and the air duct includes a main pipe and multiple branch pipes connected to the main pipe, with the multiple branch pipes respectively connected to the multiple air outlets.

8. The high-efficiency cooling structure with filtration function according to claim 1, characterized in that, A pressure sensor is installed on the housing.

9. The high-efficiency cooling structure with filtration function according to claim 1, characterized in that, The support includes a steel frame and a plurality of saddles mounted on the steel frame, with the cover mounted on the saddles.

10. The high-efficiency cooling structure with filtration function according to claim 9, characterized in that, The steel frame is constructed from multiple H-beams.

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