Disc type filter dust collector and dust removal equipment

Abstract

This invention discloses a disc filter dust collector and dust removal equipment. The disc filter dust collector includes multiple disc filter boxes, a rotating shaft, a dust removal device, and an outlet channel. The multiple disc filter boxes are arranged sequentially at intervals. The rotating shaft is sequentially inserted into the central mounting holes of each disc filter box, and the rotating shaft is rotatable relative to the disc filter box. Each disc filter box includes a frame and a metal filter screen, with the metal filter screen disposed on the outer periphery of the frame. The outlet channel is located on the outlet side of the disc filter box and communicates with the inner cavity of the disc filter box. The dust removal device is fixedly mounted on the rotating shaft and includes multiple blowpipes, which are respectively disposed between two adjacent disc filter boxes. Applying this solution can avoid the influence of process fluctuations and secondary combustion, effectively improving the dust removal effect and efficiency.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, specifically to a disc filter dust collector and dust removal equipment. Background Technology

[0002] Currently, bag filters are the most efficient dust control equipment, with advantages such as long-term stable emissions, simple process flow, and low operating costs. Therefore, they are widely used in industries such as power, cement, metallurgy, and chemical.

[0003] For the sintering machine head in steel plants of the metallurgical industry, the dust collector at the head of the sintering machine, as a process dust removal device, must start and stop synchronously with the sintering machine, placing extremely high demands on its reliability. This is due to the wide range of variations in temperature, humidity, and oxygen content of the flue gas at the sintering machine head, as well as the presence of complex dust components such as alkaline oxides, SO2, and NO. X Factors such as unburned particles and volatile organic compounds prevent baghouse dust collectors from being effectively used in sintering machine heads. Existing dust collectors used in sintering machine heads are generally equipped with electrostatic precipitators to meet the dust removal requirements of the aforementioned process. However, PM2.5 particles in the flue gas dust are still difficult to collect, therefore, the dust removal process in sintering machine heads cannot achieve ultra-low emission requirements.

[0004] In view of this, there is an urgent need to optimize the design of dust collectors to adapt to the process conditions of different application scenarios and effectively improve the dust removal effect and efficiency. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a disc filter dust collector and dust removal equipment that can avoid the impact of process fluctuations and secondary combustion, effectively improving the dust removal effect and efficiency.

[0006] The disc-type filter dust collector provided by the present invention includes multiple disc filter boxes, a rotating shaft, a dust removal device, and an outlet channel; wherein, the multiple disc filter boxes are arranged sequentially at intervals, and the rotating shaft is sequentially inserted into the central mounting hole of each disc filter box, and the rotating shaft is rotatable relative to the disc filter box; each disc filter box includes a frame and a metal filter screen, the metal filter screen being disposed on the outer periphery of the frame; the outlet channel is disposed on the outlet side of the disc filter box and communicates with the inner cavity of the disc filter box; the dust removal device is fixedly disposed on the rotating shaft, and the dust removal device includes multiple blowpipes, and the multiple blowpipes are respectively disposed between two adjacent disc filter boxes.

[0007] Optionally, the metal filter screen is formed by stacking multiple layers of filter screens; along the direction of flue gas passage, the mesh count of the inner layer of the filter screen is greater than the mesh count of the outer layer of the filter screen.

[0008] Optionally, the metal filter screen is made of stainless steel wire, Hastelloy, or iron-chromium-aluminum alloy.

[0009] Optionally, the metal filter screen is fixed to the frame by a roll welding process.

[0010] Optionally, the disc filter box is disc-shaped.

[0011] Optionally, the frame includes an inner frame body, an outer frame body, and reinforcing ribs, wherein the reinforcing ribs are connected between the inner frame body and the outer frame body.

[0012] Optionally, within the axial projection plane of the rotating shaft, the plurality of jet pipes are arranged alternately along the outer periphery of the rotating shaft.

[0013] Optionally, one side of the rotating shaft has an axially arranged insertion hole, and the side wall of the insertion hole has multiple through holes; the multiple through holes are arranged sequentially at intervals along the axial direction of the rotating shaft and are staggered along the outer periphery of the rotating shaft; the dust removal device also includes multiple connecting pipes, each connecting pipe corresponding to and connected to the blowpipe, and the inlet of each connecting pipe is connected to the multiple through holes on the rotating shaft; an external connecting pipe is inserted into the insertion hole, and the external connecting pipe can be connected to at least one of the multiple through holes.

[0014] Optionally, the external connector can slide axially relative to the insertion hole, and an annular groove is formed on the outer peripheral surface of the insertion end of the external connector; the annular groove communicates with the inner cavity of the external connector, and the external connector can communicate with at least one of the plurality of through holes through the annular groove; a sealing element is provided on both axial sides of the annular groove, and the sealing element is pressed against the insertion end of the external connector and the hole wall of the insertion hole.

[0015] Optionally, a plurality of spray nozzles are arranged at intervals along the extension direction of the spray pipe, with a portion of the spray nozzles facing one of the two adjacent disc filter boxes and another portion of the spray nozzles facing the other of the two adjacent disc filter boxes.

[0016] Optionally, the outlet channel is configured in a one-to-one correspondence with each of the disc filter boxes, or the outlet channel is configured in a corresponding manner with at least two of the disc filter boxes.

[0017] The present invention also provides a dust removal device, including a hood having a flue gas inlet and a flue gas outlet, and a dust collector being disposed inside the hood; the dust collector includes a disc filter dust collector as described above.

[0018] Optionally, multiple disc filter dust collectors are provided, and the multiple disc filter dust collectors are arranged at intervals; the outlet channel of each disc filter dust collector extends toward the side where the flue gas outlet is located.

[0019] Optionally, the dust collector further includes an electrostatic precipitator, which is disposed in the dust collection area on the upstream side along the flue gas flow path inside the hood, while the disc filter dust collector is disposed in the dust collection area on the downstream side.

[0020] This solution modifies the filter bag type, material, and cleaning method for the dust collector. Specifically, multiple disc filter boxes are arranged sequentially at intervals. Each disc filter box includes a frame and a metal filter screen, with the metal filter screen positioned on the outer periphery of the frame, forming a box-type filter structure. The cleaning device is fixedly mounted on a rotating shaft and can rotate under the shaft's drive. The cleaning device includes multiple blowpipes, which are positioned between adjacent disc filter boxes. Thus, as the shaft rotates, the corresponding blowpipes rotate synchronously, enabling comprehensive cleaning of the filter screen surfaces of both disc filter boxes. This ensures that dust on the metal filter screens of the disc filter boxes can be cleaned across the entire width of the rotating blowpipes. Overall, this solution effectively filters out fine, sticky, high-resistivity dust while avoiding the adverse effects of sintering process fluctuations and secondary combustion within the electric field. This ensures long-term, low-resistivity, reliable, and efficient operation of the dust collector, resulting in excellent dust removal effect and efficiency.

[0021] Furthermore, given that metal filter screens are made of metal, they can adapt to the complex flue gas characteristics of sintering machines, offering advantages such as more flexible arrangement, larger filtration area, lower resistance, and stable operation. Overall, they can filter out fine, sticky, high-resistivity dust while effectively avoiding the adverse effects of sintering process fluctuations and secondary combustion within the electric field. In addition, metal filter screens are fully recyclable, providing a technological guarantee for gradually replacing filter bags and moving towards a pollution-free recycling direction, compared to the difficulty in disposing of waste filter bags.

[0022] In an optional embodiment of the present invention, the metal filter screen is formed by stacking multiple layers of filter screens; along the direction of flue gas passage, the mesh count of the innermost filter screens in each layer is greater than the mesh count of the outermost filter screens. This configuration, while satisfying the dust removal effect, allows for reasonable control of the flue gas flow resistance, further improving dust removal efficiency.

[0023] In another alternative embodiment of the invention, multiple jet pipes are arranged alternately along the outer periphery of the rotating shaft within its axial projection plane. This avoids eccentric loading and ensures better dynamic balance during shaft rotation.

[0024] In another optional embodiment of the present invention, one side of the shaft end has an axially arranged insertion hole, and the side wall of the insertion hole has a plurality of through holes; at the same time, an external connector is inserted into the insertion hole, which can communicate with at least one of the plurality of through holes to establish a communication relationship between the air source side and the blow pipe through the corresponding connecting pipe; with such a configuration, the zonal purging of the disc filter box can be realized, and the purging energy consumption can be effectively controlled.

[0025] In another alternative embodiment of the invention, the electrostatic precipitator can be combined with the aforementioned disc filter dust collector. Specifically, along the flue gas flow path within the enclosure, the electrostatic precipitator is positioned in the upstream dust collection area, while the disc filter dust collector is positioned in the downstream dust collection area. With this configuration, after passing through the electrostatic precipitator, the charged dust layer agglomerates, forming flocculent particles that create a well-permeable dust cake on the surface of the metal filter screen. Simultaneously, a high-pressure gas cleaning device is used to blow clean the surface of the metal filter screen, resulting in a cleaner disc filter screen surface. Attached Figure Description

[0026] Figure 1 This is a front view of a dust removal device provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the overall structure of a disc filter dust collector provided in an embodiment of this application;

[0028] Figure 3 for Figure 2 An exploded view of the assembly of the disc filter dust collector shown in the image;

[0029] Figure 4 for Figure 2 Top view of the disc filter dust collector shown in the image;

[0030] Figure 5 A front view of a disc filter box provided in an embodiment of this application;

[0031] Figure 6 for Figure 5 AA section view in the middle;

[0032] Figure 7 for Figure 6 Enlarged schematic diagram of part B in the diagram;

[0033] Figure 8 for Figure 4 Enlarged schematic diagram of Part I;

[0034] Figure 9 A front view of another dust removal device provided in an embodiment of this application;

[0035] Figure 10 A front view of yet another dust removal device provided in an embodiment of this application;

[0036] Figure 11 A front view of another dust removal device provided in an embodiment of this application;

[0037] Figure 12 This is a front view of another dust removal device provided in an embodiment of this application.

[0038] In the picture:

[0039] Dust removal equipment 100, dust removal equipment 100a, dust removal equipment 100b, dust removal equipment 100c, dust removal equipment 100d, disc filter dust collector 10, hood 20, hood 20a, hood 20b, hood 20c, hood 20d, flue gas inlet 201, flue gas outlet 202, flue gas outlet 202d, ash hopper 203;

[0040] Disc filter box 1, frame 11, inner frame body 111, outer frame body 112, reinforcing rib 113, first reinforcing rib 1131, second reinforcing rib 1132, metal filter screen 12, edging 121, mounting hole 13, rotating shaft 2, insertion hole 21, through hole 22, dust removal device 3, blow pipe 31, blow nozzle 311, connecting pipe 32, outlet channel 4, external connecting pipe 5, annular groove 51, sealing element 6. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Please see Figure 1 The figure is a front view of a dust removal device according to a specific embodiment.

[0043] The dust removal equipment 100 includes a hood 20 and a disc filter dust collector 10 disposed inside the hood 20. The hood 20 has a flue gas inlet 201 on one side and a flue gas outlet 202 on the other side, and a dust hopper 203 can be installed at the bottom for collecting dust. The flue gas to be treated enters the hood 20 through the flue gas inlet 201, undergoes dust removal treatment by the disc filter dust collector 10, and is then discharged through the flue gas outlet 202.

[0044] Figure 1 As shown, the dust removal device includes three disc filter dust collectors 10, which are arranged sequentially inside the housing 20. Please refer to [link / reference]. Figure 2 and Figure 3 ,in, Figure 2 This is a schematic diagram of the overall structure of the disc filter dust collector described in a specific embodiment. Figure 3 for Figure 2 The exploded view of the disc filter dust collector shown is an assembly diagram.

[0045] The disc filter dust collector 10 includes multiple disc filter boxes 1, a rotating shaft 2, a dust removal device 3, and an outlet channel 4. Without loss of generality, the figure shows an example of seven disc filter boxes 1 arranged at intervals, illustrating the relative positional relationship between the disc filter boxes. In other specific implementations, the number of disc filter boxes 1 can be determined according to the overall product design. Here, the spacing between the disc filter boxes 1 can be the same or different.

[0046] In this embodiment, the disc filter box 1 includes a frame 11 and a metal filter screen 12. The metal filter screen 12 is disposed on the outer periphery of the frame 11, forming a box-type filter structure. Please refer to [the relevant documentation]. Figure 5 and Figure 6 ,in, Figure 5 This is a front view of the disc filter box 1 described in this embodiment. Figure 6 for Figure 5 AA section view.

[0047] As shown in the figure, the disc filter box 1 is generally disc-shaped, with its frame 11 being a disc-shaped frame, and the metal filter screen 12 covering and fixed on the disc-shaped frame. In other specific implementations, the disc filter box 1 is not limited to the disc shape shown in the figure, and can also adopt other structural forms, such as, but not limited to, rectangular, elliptical, or other irregular shapes. Relatively speaking, the disc-shaped filter box structure has better manufacturability.

[0048] To further improve overall strength, reinforcing ribs 113 are provided between the inner frame body 111 and the outer frame body 112 of the frame 11. As shown in the figure, the reinforcing ribs 113 include a plurality of radially arranged first reinforcing ribs 1131, which are strip-shaped. Further, second reinforcing ribs 1132 connected between the first reinforcing ribs 1131 may also be included, and these second reinforcing ribs 1132 are circular. In other specific implementations, the number and specific form of the reinforcing ribs 113 can be determined as needed; for example, but not limited to, the inner frame body 111, the outer frame body 112, and the second reinforcing ribs 1132 can be made of C-shaped steel bent into a ring shape. This application does not limit the scope of the embodiments.

[0049] In a specific implementation, the metal filter 12 can be a filter with a thickness of 1μm to 10μm. Multiple layers of filter screens can be stacked to form the metal filter 12. Specifically, a gradient combination of different mesh sizes from coarse to fine is used along the flue gas passage direction. Along the flue gas passage direction, the mesh size of the inner filter screen in each layer is greater than the mesh size of the outer filter screen, so that dust can be filtered according to the gradient from coarse to fine.

[0050] This configuration adapts to the complex flue gas characteristics of the sintering machine head, offering advantages such as more flexible layout, larger filtration area, lower resistance, and stable operation. Overall, it effectively filters out fine, sticky, high-resistivity dust while avoiding adverse effects from sintering process fluctuations and secondary combustion within the electric field. Furthermore, the metal filter screen used in disc filter box 1 is a fully recyclable material. Compared to the difficulty in disposing of used filter bags, this solution provides technical support for gradually replacing filter bags and moving towards a pollution-free recycling model.

[0051] Furthermore, for dusty flue gas under different working conditions, the metal filter screen 12 can be made of materials such as stainless steel wire (SUS304, 310S, 316L, etc.), Hastelloy, or iron-chromium-aluminum alloy, which have the properties of acid resistance, alkali resistance, high temperature resistance, and strong wear resistance.

[0052] Optionally, the metal filter 12 can be fixed to the frame 11 by roll welding or edge banding. Please refer to [link / reference]. Figure 5 , Figure 6 and Figure 7 ,in, Figure 7 for Figure 6 The enlarged schematic diagram of part B in the figure shows that the metal filter 12 and the frame 11 are welded and fixed together by methods such as resistance welding and roll welding. The roll welding area is marked C in the figure, and the edge of the metal filter 12 can form a edging 121, such as... Figure 7 As shown, the edging 121 can cover the outer surface of the outer ring frame 112 and be fixed by roll welding.

[0053] The rotating shaft 2 is sequentially inserted into the middle mounting hole 13 of each disc filter box 1. The disc filter box 1 is fixedly installed, and the rotating shaft 2 can rotate relative to the disc filter box 1.

[0054] The dust removal device 3 is fixedly mounted on the rotating shaft 2 and can rotate synchronously under the drive of the rotating shaft 2. The dust removal device 3 includes six blow pipes 31, which are arranged between two adjacent disc filter boxes 1. Optionally, to avoid uneven loading of the rotating shaft 2, the six blow pipes 31 are staggered on the outer periphery of the rotating shaft 2. That is, in the axial projection plane of the rotating shaft 2, multiple blow pipes 31 are staggered along the outer periphery of the rotating shaft and are respectively located between two adjacent disc filter boxes 1. In this way, the rotating shaft 2 has good dynamic balance during rotation.

[0055] Here, multiple nozzles 311 are arranged at intervals along the extension direction of the blowpipe 31. Some nozzles 311 are oriented towards one of the two adjacent disc filter boxes 1, while others are oriented towards the other. Thus, as the shaft 2 rotates, airflow can be delivered to each nozzle 311 through the corresponding blowpipe 31, thereby comprehensively cleaning the filter screen surfaces of the disc filter boxes 1 on both sides of the blowpipe 31. This ensures that the dust on the metal filter screen 12 of the disc filter box 1 can be blown away by the rotating blowpipe across its entire width. Compared to the existing mechanical impact rapping method, this solution has a better cleaning effect, thus ensuring that the dust collector can operate with low resistance, reliability, and high efficiency for a long time.

[0056] Furthermore, the multiple nozzles 311 spaced apart on the blowpipe 31 can be spaced at the same or different intervals. The number of blowpipes and the number of nozzles on them can be determined as needed, and this embodiment does not impose any limitations.

[0057] In a specific implementation, an external pipe 5 can be installed at the shaft end of the rotating shaft 2 to connect the blow pipe with the air source (the external system air path is not shown) and establish a reliable air path connection relationship. For example, but not limited to, compressed air or steam can be used for blow cleaning.

[0058] The outlet channel 4 is located on the outlet side of the disc filter box 1 and communicates with the inner cavity of the disc filter box 1. It can also communicate with the flue gas outlet 202 of the dust removal equipment 100 through the outlet channel 4. After dust removal treatment by the metal filter screen 12 on the surface of the disc filter box 1, the purified gas is discharged through the outlet channel 4 located on the outlet side of the disc filter box 1.

[0059] As shown in the figure, each disc filter box 1 has an outlet channel 4 on its outlet side, meaning that each disc filter box 1 and outlet channel 4 are configured in a one-to-one correspondence. In other specific implementations, the outlet sides of two disc filter boxes 1 can be connected to the same outlet channel; in other words, two disc filter boxes 1 share one outlet channel. Alternatively, the outlet sides of multiple other disc filter boxes 1 can share one outlet channel (not shown in the figure), which also establishes a connection between the interior of the disc filter box 1 and the flue gas outlet side.

[0060] To further improve the purging effect and reduce the pressure requirements on the air source side, the external connection can be selectively connected to the blowpipe 31 to achieve zoned purging. Please refer to [further details]. Figure 3 , Figure 4 and Figure 8 ,in, Figure 8 for Figure 4 Enlarged schematic diagram of Part I.

[0061] As shown in the figure, one side of the shaft 2 has an axially oriented insertion hole 21, and the side wall of the insertion hole 31 has multiple through holes 22; Figure 8 As shown, multiple through holes 22 are arranged sequentially at intervals along the axial direction of the rotating shaft 2, and are staggered along the outer periphery of the rotating shaft 2. That is, each through hole 22 is configured corresponding to the blow pipe 31.

[0062] Correspondingly, the dust removal device 3 also includes multiple connecting pipes 32, which are arranged one-to-one with the blow pipes 31 and are connected to each other. The inlet of the multiple connecting pipes 32 is connected to multiple through holes 22 on the rotating shaft 2. Here, the external pipe 5 for connecting to the air source side is inserted into the insertion hole 21 on one side of the rotating shaft 2, and the external pipe 5 can be selectively connected to one of the multiple through holes 22.

[0063] Specifically, the external connector 5 can slide axially relative to the insertion hole 21, and an annular groove 51 is formed on the outer peripheral surface of the insertion end of the external connector 5. The annular groove 51 communicates with the inner cavity of the external connector 5, and the external connector 5 can communicate with one of the multiple through holes 22 through the annular groove 51. That is to say, as the external connector 5 moves axially in the insertion hole 21, its annular groove 51 can selectively communicate with the through hole 22 on the side wall of the rotating shaft 2. Thus, it can be transported to the corresponding blowpipe 31 through the connecting pipe 32 that communicates with the corresponding through hole 22, and then the disc filter box 1 on both sides of the blowpipe 31 can be cleaned by blowpipe, so as to realize the zoned purging.

[0064] Furthermore, to improve the sealing between the insertion end of the external connector 5 and the insertion hole 21 of the rotating shaft 2, further, for example... Figure 8 As shown, sealing elements 6 are respectively provided on both sides of the annular groove 51. Each sealing element 6 is pressed against the insertion end of the external pipe 5 and the wall of the insertion hole 21. In this way, a reliable seal can be formed between the annular groove 51 and the corresponding through hole 22 to prevent gas leakage from affecting the blowing effect.

[0065] In specific implementations, the sealing element 6 can be an O-ring or other types of sealing elements, and this application embodiment does not limit the specific type of sealing element.

[0066] For pulse-jet cleaning, when the resistance of the metal filter screen on the flue gas side and the clean gas side in a certain area reaches a certain value, the rotating shaft 2 can be started to rotate, and the external pipe 5 can be controlled to move to the through hole corresponding to the area to be cleaned. After alignment, high-pressure gas can be delivered to the corresponding pulse-jet pipe 3. The rotating shaft 2 drives the pulse-jet pipe 31 to perform high-pressure purging and dust removal on the metal filter screen in that area, thereby achieving zoned purging using the pulse-jet pipe 31.

[0067] The foregoing Figure 1The described dust removal equipment includes a row of vertically arranged, spaced-apart disc filter dust collectors 10. In other implementations, multiple rows of disc filter dust collectors may be used; please refer to [link to relevant documentation]. Figure 9 This figure is a front view of another dust removal device provided in an embodiment of this application. It is intended to clearly illustrate the difference between this implementation and... Figure 1 The differences and connections between the described schemes, and the components or structures with the same function, are illustrated in the diagram using the same symbols.

[0068] like Figure 9 As shown, the dust removal equipment 100a includes four dust removal zones: a first dust removal zone S1, a second dust removal zone S2, a third dust removal zone S3, and a fourth dust removal zone S4. The four dust removal zones are arranged sequentially between the flue gas inlet and the flue gas outlet of the hood 20a, and each dust removal zone is provided with an ash hopper 203 below it.

[0069] Each dust removal area is equipped with a disc filter dust collector 10. In the first dust removal area S1, the disc filter dust collectors 10 are arranged sequentially in the vertical direction; in the second dust removal area S2, the disc filter dust collectors 10 are arranged alternately in the vertical direction; in the third dust removal area S3, the disc filter dust collectors 10 are arranged in two rows, with each row of disc filter dust collectors 10 arranged in the vertical direction; in the fourth dust removal area S4, the disc filter dust collectors 10 have different sizes, and by freely combining them, the space within the dust removal area can be fully utilized to improve the overall dust removal effect.

[0070] It should be noted that the number of dust removal zones and the size and number of disc filter dust collectors in each zone can be determined according to actual needs, exhibiting good adaptability. This application does not limit the scope of the embodiments.

[0071] Based on the aforementioned disc filter dust collector 10, it can also be used in combination with an electrostatic precipitator. Please refer to... Figure 10 This figure is a front view of another dust removal device provided in an embodiment of this application. To clearly illustrate the difference between this implementation and... Figure 1 and Figure 9 The differences and connections between the described schemes, and the components or structures with the same function, are illustrated in the diagram using the same symbols.

[0072] like Figure 10As shown, the dust removal equipment 100b includes four dust removal zones. Along the flue gas flow path inside the hood 20b, electrostatic precipitators 30 are installed in the three dust removal zones on the upstream side, and disc filter dust collectors 10 are installed in the dust removal zone on the downstream side. That is, an electrostatic precipitator is used at the front end, and a disc filter dust collector 10 is used at the rear end. Thus, after passing through the electrostatic precipitator, the charged dust layer agglomerates, forming flocculent particles that form a well-permeable dust cake on the surface of the metal filter screen. Simultaneously, the cleaning device 3 uses high-pressure gas to blow clean the surface of the metal filter screen, making the disc filter screen surface cleaner. In practical implementation, the blowing cycle can be shortened by adjusting the rotation speed of the shaft 2, resulting in lower operating resistance and more stable equipment operation compared to conventional bag filters.

[0073] It should be noted that the specific functions of the electrostatic precipitator 30 can be achieved using existing technologies, so they will not be elaborated upon in this article.

[0074] For combined applications of disc filter dust collectors 10 and electrostatic precipitators, the number of disc filter dust collectors 10 arranged can be multiple columns. Please refer to [link / reference]. Figure 11 This figure is a front view of another dust removal device provided in an embodiment of this application. It is intended to clearly illustrate the difference between this implementation and... Figure 10 The differences and connections between the described schemes, and the components or structures with the same function, are illustrated in the diagram using the same symbols.

[0075] like Figure 11 As shown, within the hood 20c of the dust removal equipment 100c, along the flue gas flow path within the hood 20c, electrostatic precipitators are arranged in two dust removal zones on the upstream side, and disc filter dust collectors 10 are arranged in two dust removal zones on the downstream side. Similarly, in this embodiment, both rows of disc filter dust collectors 10 are configured on the downstream side. It is understood that the combination configuration of the electrostatic precipitator 30 and the disc filter dust collector 10 is not limited to that shown in the figure, and can be determined according to the actual product design in other specific implementations.

[0076] The dust removal equipment described in the aforementioned embodiments has its flue gas outlet located on the side of the hood. In other specific implementations, the flue gas outlet may also be located at the top of the hood. Please refer to [link to relevant documentation]. Figure 12 This figure is a front view of another dust removal device provided in an embodiment of this application. To clearly illustrate the difference between this implementation and... Figure 10 The differences and connections between the described schemes, and the components or structures with the same function, are illustrated in the diagram using the same symbols.

[0077] like Figure 12As shown, the flue gas outlet 202d of the dust removal device 100d is located at the top of the hood 20d; correspondingly, the outlet channels 4 of the disc filter dust collector 10 are all oriented upwards to establish a smooth flue gas path. Other configurations and connections are the same as those described above, and will not be repeated here.

[0078] It should be noted that the ordinal numbers "first" and "second" used in this embodiment are only for clarifying the technical composition and relationships, and the use of the above ordinal numbers does not constitute a substantial limitation on the technical solution described in this application.

[0079] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A disc filter, characterized in that It includes multiple disc-shaped filter boxes, a rotating shaft, a dust removal device, and an outlet channel; The plurality of disc filter boxes are arranged at intervals in sequence, and the rotating shaft is inserted into the middle mounting hole of each disc filter box in sequence, and the rotating shaft can rotate relative to the disc filter box. The disc filter box includes a frame and a metal filter screen, the metal filter screen being disposed on the outer periphery of the frame; the outlet channel is disposed on the outlet side of the disc filter box and communicates with the inner cavity of the disc filter box. The dust removal device is fixedly mounted on the rotating shaft. The dust removal device includes multiple blow pipes, and the multiple blow pipes are respectively arranged between two adjacent disc filter boxes. In the axial projection plane of the rotating shaft, the multiple blow pipes are staggered along the outer periphery of the rotating shaft. One side of the shaft has an axially arranged insertion hole, and the side wall of the insertion hole has multiple through holes; the multiple through holes are arranged sequentially at intervals along the axial direction of the shaft and are staggered along the outer periphery of the shaft. The dust removal device also includes multiple connecting pipes, which are arranged one-to-one with the blow pipe and are connected to each other. The inlet of the multiple connecting pipes is connected to multiple through holes on the rotating shaft. An external connector is inserted into the insertion hole. The external connector is used to connect to a gas source and can communicate with at least one of the plurality of through holes.

2. The disc filter dust collector according to claim 1, characterized in that, The metal filter screen is formed by stacking multiple layers of filter screens; along the direction of flue gas passage, the mesh count of the inner filter screen in each layer is greater than the mesh count of the outer filter screen.

3. The disc filter dust collector according to claim 1 or 2, characterized in that, The metal filter screen is made of stainless steel wire, Hastelloy, or iron-chromium-aluminum alloy.

4. The disc filter dust collector according to claim 3, characterized in that, The metal filter screen is fixed to the frame by a roll welding process.

5. The disc filter dust collector according to claim 1, characterized in that, The frame includes an inner frame body, an outer frame body, and reinforcing ribs, with the reinforcing ribs connecting the inner frame body and the outer frame body.

6. The disc filter dust collector according to claim 1, characterized in that, The external connector can slide axially relative to the insertion hole, and an annular groove is formed on the outer peripheral surface of the insertion end of the external connector; the annular groove communicates with the inner cavity of the external connector, and the external connector can communicate with at least one of the plurality of through holes through the annular groove; a sealing element is provided on both sides of the annular groove, and the sealing element is pressed against the insertion end of the external connector and the hole wall of the insertion hole.

7. The disc filter dust collector according to claim 1 or 6, characterized in that, Multiple spray nozzles are arranged sequentially at intervals along the extension direction of the spray pipe. A portion of the multiple spray nozzles are positioned facing one of the two adjacent disc filter boxes, while another portion of the spray nozzles are positioned facing the other of the two adjacent disc filter boxes.

8. The disc filter dust collector according to claim 1, characterized in that, The outlet channel is configured in a one-to-one correspondence with each of the disc filter boxes, or the outlet channel is configured in a corresponding manner with at least two of the disc filter boxes.

9. A dust removal device, comprising a hood, the hood having a flue gas inlet and a flue gas outlet, and a dust collector disposed within the hood; characterized in that, The dust collector includes the disc filter dust collector according to any one of claims 1 to 8.

10. The dust removal equipment according to claim 9, characterized in that, The disc filter dust collector is configured in multiple ways, and the multiple disc filter dust collectors are arranged at intervals; the outlet channel of each disc filter dust collector extends towards the side where the flue gas outlet is located.

11. The dust removal equipment according to claim 9 or 10, characterized in that, The dust collector also includes an electrostatic precipitator, which is located in the dust removal area on the upstream side along the flue gas flow path inside the hood, while the disc filter dust collector is located in the dust removal area on the downstream side.

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