Dust removing and discharging mechanism and dust removing device

Abstract

The utility model provides a dust removal and unloading mechanism and dust removal device, dust removal and unloading mechanism comprises a dust hopper and a partition assembly, the partition assembly is installed in the dust hopper, the partition assembly comprises a turnover driving mechanism and two valve plates which are hinged and can turn over, the turnover driving mechanism is installed on the dust hopper, and the two valve plates are hinged to each other. And the movable end of the turnover driving mechanism is connected with the valve plate. The partition assembly is arranged in the ash bucket, the valve plate is turned over through the turning driving mechanism, when the valve plate is turned over and attached in the ash material moving direction, deposition of filtered particulate matter is not affected, when the valve plate is turned over in the direction away from the ash material moving direction and the upper space and the lower space of the ash bucket are partitioned, the ash discharging port in the ash bucket is opened, and due to partition, the ash discharging port is opened. The dust above the valve plate can continue to be accumulated, the space below the partition plate can be opened by opening the dust discharging port below the dust hopper when the space below the valve plate is located outside the partition plate, discharging is directly conducted downwards through gravity without buffering, and the rapid dust discharging effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology in the medium and fine crushing process, specifically to a dust removal and ash unloading mechanism and a dust removal device. Background Technology

[0002] The medium and fine crushing section generates a large amount of fine dust during ore crushing and screening. If dust removal is not carried out, this dust will be directly emitted into the air, causing air pollution. Pulse jet bag filters are generally used for dust removal in the medium and fine crushing section. For example, Chinese Patent 202211181536.9 discloses a dust removal device for a medium and fine crushing plant in a mine, comprising: a dust collection box, with an ash hopper at the lower end of the dust collection box, and an ash outlet at the lower end of the ash hopper.

[0003] In order to avoid interrupting dust removal and prevent secondary dust generation that could affect the filter bags within the dust collector, the existing technology currently uses a rotary valve for ash discharge. However, the rotary valve requires rate control, resulting in a slow ash discharge speed and the inability to directly discharge dust downwards. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a dust removal and ash discharge mechanism to solve the technical problem that the existing star-shaped ash discharge valve requires rate control, resulting in slow ash discharge speed and inability to directly discharge dust downwards.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a dust removal and ash unloading mechanism, comprising:

[0007] Ash bucket; and

[0008] The partition assembly, installed inside the ash hopper, includes a flipping drive mechanism and two hinged and flippable valve plates. The flipping drive mechanism is installed on the ash hopper, and the movable end of the flipping drive mechanism is connected to the valve plates, so that the two valve plates have a first position state in which they flip and fit together along the ash material movement direction, and a second position state in which they flip and separate the upper and lower spaces of the ash hopper from the ash material movement direction.

[0009] In some embodiments, an opening is provided on one side of each of the two valve plates opposite to each other, and a sealing member is provided on the inner side of the ash hopper. The sealing member disengages from the valve plate in the first position state, opening the opening; and contacts the valve plate in the second position state, closing the opening.

[0010] In some embodiments, the closure includes a crossbar with a protrusion connected to it; in a second position, the protrusion is inserted into the opening; in a first position, a gap is formed between the protrusion and the opening.

[0011] In some embodiments, the closure includes a crossbar, and the tilting drive mechanism includes two drive motors, which are respectively mounted on both sides of the ash hopper, and the output shaft of the drive motor passes through the ash hopper and is connected to the corresponding valve plate.

[0012] In some embodiments, dust covers fitted onto the outside of the drive motor are provided on both sides of the ash hopper.

[0013] In some embodiments, a sealing strip is provided on the inside of the opening, and the top of the protrusion is arc-shaped.

[0014] In some embodiments, the hopper also includes a cover assembly and a dust collection trolley, the cover assembly being installed at the bottom of the dust hopper and the dust collection trolley being detachably connected to the cover assembly to form a sealed dust discharge space.

[0015] In some embodiments, the covering assembly includes a plate and a flexible connector. The plate is fixedly connected to the bottom of the ash hopper, and the plate has an opening communicating with the ash hopper. The two ends of the flexible connector are respectively connected to the plate and the magnetic frame.

[0016] In some embodiments, a magnetic frame is connected to the bottom of the flexible connector, the outer side of the magnetic frame is covered with a sealing layer, and the magnetic frame is magnetically connected to the top of the ash transport trolley.

[0017] Secondly, this utility model also provides a dust removal device, including a dust removal and ash unloading mechanism as described in any one of the above and a pulse bag dust collector housing, wherein the dust removal and ash unloading mechanism is installed at the bottom of the pulse bag dust collector housing.

[0018] Compared with the prior art, the dust removal and ash discharge mechanism provided by this utility model sets a partition component in the ash hopper and uses a flipping drive mechanism to flip the valve plate. When it flips and fits along the direction of ash material movement, it does not affect the deposition of filtered particles. When it flips away from the direction of ash material movement and isolates the upper and lower spaces of the ash hopper, the ash discharge port on the ash hopper is opened. Due to the isolation, dust above the valve plate can continue to accumulate, while the space below the valve plate is outside the isolation. Opening the ash discharge port below the ash hopper opens the space below the partition, and the material is discharged directly downwards without buffering by gravity, forming a rapid ash discharge effect. Moreover, the secondary dust generated by the rapid ash discharge is also blocked in the lower space by the valve plate, and will not affect the dust accumulation in the upper space. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the dust removal and ash unloading mechanism provided in this embodiment of the utility model;

[0020] Figure 2 This is a cross-sectional view of the first position of the dust removal and ash unloading mechanism provided in this embodiment of the utility model;

[0021] Figure 3 This is a utility model Figure 2 A magnified view of part A;

[0022] Figure 4 This is a utility model Figure 2 A magnified view of part B;

[0023] Figure 5 This is a cross-sectional view of the second position of the dust removal and ash unloading mechanism provided in this embodiment of the utility model;

[0024] Figure 6 This is a top sectional view of the ash hopper in the second position state of the dust removal and ash unloading mechanism provided in this embodiment of the utility model;

[0025] Figure 7 This is a utility model Figure 5 A magnified view of part C.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Pulse jet baghouse dust collector housing; 101. Air inlet; 102. Exhaust outlet; 11. Dust collector housing; 111. Lower housing; 112. Upper housing; 12. Pulse jet cleaning assembly; 13. Filter bag;

[0028] 2. Ash hopper; 201. Ash discharge valve; 202. Opening; 203. Protrusion;

[0029] 3. Partition assembly; 31. Tilting drive mechanism; 311. Drive motor; 312. Sealing cover; 32. Valve plate; 321. Opening; 322. Sealing strip;

[0030] 4. Cover assembly; 41. Panel; 42. Flexible connector; 43. Magnetic frame; 431. Sealing layer;

[0031] 5. Ash transport cart. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical problem of controlling the amount of ash discharged with each rotation of a star-shaped ash discharge valve to prevent excessive speed from causing sealing failure and secondary dust generation, thus resulting in long ash discharge times, this utility model provides a dust removal and ash discharge mechanism that can quickly discharge ash without interrupting dust removal and avoid secondary dust generation interfering with dust removal.

[0034] It should be noted that the dust removal and ash unloading mechanism described in this utility model is used in, but not limited to, the medium and fine crushing sections of mining. For ease of explanation, this utility model only uses the application of the dust removal and ash unloading mechanism in the medium and fine crushing sections of mining as an example. The principle of the dust removal and ash unloading mechanism applied in other dust removal environments is essentially the same as that applied in the medium and fine crushing sections of mining, and will not be described in detail here.

[0035] Firstly, please refer to Figure 1 , Figure 1 This is a schematic diagram of the dust removal and ash unloading mechanism in one embodiment of the present invention. The dust removal and ash unloading mechanism includes an ash hopper 2 and a partition assembly 3. The partition assembly 3 is installed inside the ash hopper 2 and includes a flipping drive mechanism 31 and two hinged and flippable valve plates 32. The flipping drive mechanism 31 is installed on the ash hopper 2, and the movable end of the flipping drive mechanism 31 is connected to the valve plates 32, so that the two valve plates 32 have a first position state in which they flip and fit together along the ash material movement direction, and a second position state in which they flip and isolate the ash material movement direction away from the ash material movement direction. In the second position of the upper and lower space of the bag filter housing 1, in the first position, the two valve plates 32 are vertical and close together to avoid interference with the settling of particles. In the second position, the two valve plates 32 separate the ash hopper 2, separating the lower and upper parts of the ash hopper 2, so that the upper part is connected to the pulse bag filter housing 1 to allow normal gas flow and dust collection. After the separation, the lower part can be directly opened by the ash discharge valve 201 for rapid ash discharge. The secondary dust generated by ash discharge can avoid interference with the filter part due to the obstruction of the separation.

[0036] Furthermore, the ash discharge port is located at the bottom of the ash hopper 2, the partition assembly 3 is installed inside the ash hopper 2, and the ash discharge port is provided with an ash discharge valve 201. Ash can be discharged by opening the ash discharge valve 201.

[0037] Specifically, in the first position, the valve plate 32 is vertical and the two valve plates 32 are in close contact with each other; in the second position, the valve plate 32 is horizontal and the two valve plates 32 are flush, the edge of the valve plate 32 is in close contact with the inner wall of the ash hopper 2, and a sealing ring is provided for compression sealing.

[0038] The ash discharge valve 201 can be a butterfly valve or other valves that can be opened directly, and can discharge ash directly downwards after opening.

[0039] During use, the filtered particles are collected in the ash hopper 2 during the dust removal process. After some dust has accumulated, it is necessary to unload the material. This is done by starting the flipping drive mechanism 31, which switches the two valve plates 32 from the first position to the second position, thus separating the upper and lower spaces of the ash hopper 2. Then, the ash discharge valve 201 is opened to directly and quickly discharge the dust.

[0040] Understandably, if the valve plate 32 were to open by flipping downwards and fitting together, firstly, the trapezoidal shape of the ash hopper 2 would obstruct the flipping of the valve plate 32. Secondly, if it were to open by flipping downwards, ash would accumulate in the lower part of the ash hopper 2, requiring it to be lifted out of the dust to switch to a horizontal partition state, which would be inconvenient and could cause dust to be stirred up. Therefore, using an upward-flipping and fitting design to form the opening state is more effective and stable.

[0041] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 In order to slowly pour the ash material downwards when the two valve plates 32 are flipped upwards and to reduce dust rising from the middle, an opening 321 is provided on one side of the two valve plates 32 opposite to each other. A sealing member is provided on the inner side of the ash hopper 2. The sealing member is disengaged from the valve plate 32 in the first position state, opening the opening 321; and in contact with the valve plate 32 in the second position state, closing the opening 321.

[0042] Specifically, the closure includes a crossbar 202, with both ends of the crossbar 202 fixedly connected to the left and right side walls of the ash hopper 2, and a protrusion 203 connected to the top of the crossbar 202. In the second position, the protrusion 203 is inserted into both openings 321, closing the openings 321 and, together with the valve plate 32, separating the upper and lower spaces of the ash hopper 2. In the first position, a gap is formed between the protrusion 203 and the opening 321. During the flipping action, the opening 321 forms a gap with the protrusion 203, and the two valve plates 32 form a V-shape, allowing the ash to slowly flow downwards through the gap. Furthermore, since the valve plates 32 on both sides can form a shield in the middle position, the secondary dust that may be generated when the ash is discharged downwards to the lower half of the ash hopper 2 is blocked in the middle position, reducing the possible interference.

[0043] In this embodiment, the rotation axis of the valve plate 32 is on the midpoint of the ash hopper 2. The two valve plates 32 rotate upwards along the rotation axis to open the upper and lower spaces of the ash hopper 2. The two valve plates 32 rotate downwards and cover the inner wall of the ash hopper 2, thereby blocking the upper and lower spaces of the ash hopper 2.

[0044] In one embodiment, please refer to Figure 3 and Figure 7 In order to form a seal in the second position, a sealing strip 322 is provided on the inside of the opening 321, and gaps may be generated in the seal.

[0045] Furthermore, to prevent dust from accumulating on the protrusion 203, the top of the protrusion 203 is rounded, allowing the dust to slide off smoothly.

[0046] In another embodiment, a baffle can be provided on the crossbar 202 to cover the bottom of the opening 321 in the second position state, which can also achieve a sealing effect. This is not the only one.

[0047] In one embodiment, in order to avoid the impact of dust on the factory environment during the rapid ash unloading process, a cover assembly 4 and an ash transport trolley 5 are also included. The cover assembly 4 is installed at the bottom of the ash unloading valve 201, and the ash transport trolley 5 is detachably connected to the cover assembly 4 to form a closed ash unloading space. By unloading ash through the closed ash unloading space, dust can be effectively prevented from being suspended into the external space.

[0048] Specifically, in order to quickly assemble and disassemble the ash transport trolley 5 and the cover assembly 4, the cover assembly 4 includes a plate 41, a flexible connector 42, and a magnetic frame 43. The plate 41 is fixedly connected to the bottom of the ash discharge valve 201, and the plate 41 has an opening that communicates with the valve port of the ash discharge valve 201. The two ends of the flexible connector 42 are respectively connected to the plate 41 and the magnetic frame 43. The magnetic frame 43 is magnetically connected to the top of the ash transport trolley 5. By opening the ash discharge valve 201, dust passes through the opening from the valve body, through the inside of the flexible connector 42, and enters the ash transport trolley 5.

[0049] The flexible connector 42 can be made of waterproof soft cloth, which can be extended and retracted to attach the magnetic frame 43 to the top of the ash transport trolley 5. The ash transport trolley 5 has a hopper, the top size of which matches the size of the magnetic frame 43, and is equipped with an iron ring for magnetic attraction.

[0050] Furthermore, the outer side of the magnetic frame 43 is covered with a sealing layer 431, which provides a seal for the gap after magnetic attraction.

[0051] In one embodiment, in order to switch between a first position state and a second position state, the flipping drive mechanism 31 includes a drive motor 311 and a sealing cover 312. The sealing cover 312 is installed on both sides of the ash hopper 2. The two drive motors 311 are respectively installed inside the two sealing covers 312, and the output shaft of the drive motor 311 passes through the ash hopper 2 and is connected to the corresponding valve plate 32. One drive motor 311 drives one ash hopper 2 to flip. By forward and reverse rotation, the flipping action is controlled, and the two valve plates 32 are provided to switch between the first position state and the second position state.

[0052] It is understandable that the driving method of the drive motor 311 is only one feasible implementation method. Other drive mechanisms with flipping action can also be used to flip the valve plate 32. There is no unique limitation here.

[0053] To better understand this utility model, the following is combined with... Figures 1 to 7 The technical solution of this utility model is described in detail as follows: During the dust removal process, the exhaust fan carries fine particles into the dust collector 11, where they are filtered by the filter bag 13. The filtered particles are collected in the ash hopper 2. If backflushing is required, the air inlet 101 is closed, and the pulse jet cleaning assembly 12 is activated to blow dust off the filter bag 13. After some dust has accumulated in the ash hopper 2, ash needs to be unloaded. The flipping drive mechanism 31 is activated to switch the two valve plates 32 from the first position to the second position, separating the upper and lower spaces of the ash hopper 2. Then, the ash discharge valve 201 is opened, allowing the dust to be directly and quickly discharged into the ash transport trolley 5. The ash discharge valve 201 is then closed, and the two valve plates 32 are switched from the second position to the first position. The magnetic suction frame 43 is then pulled open to move the ash transport trolley 5 and transfer the dust.

[0054] Secondly, this utility model also provides a dust removal device, including a dust removal and ash unloading mechanism and a pulse bag dust collector housing 1. Please refer to [link to relevant documentation]. Figure 1 and Figure 2The pulse jet bag filter housing 1 is a pulse jet bag filter. Specifically, the pulse jet bag filter housing 1 includes a dust collection housing 11, a pulse jet cleaning assembly 12, and filter bags 13. The dust collection housing 11 is divided into a lower housing 111 and an upper housing 112 by a partition. The lower housing 111 is connected to the ash hopper 2 for dust collection, while the upper housing 112 is the clean air chamber where the air enters after filtration by the filter bags 13. The filter bags 13 are installed in the lower housing 111 and extend upwards into the upper housing 112. The medium and fine particles drawn in are filtered by the filter bags. The filter bags 13 are filtered out and retained in the lower chamber 111 and collected in the dust hopper 2. The upper chamber 112 is provided with an exhaust port 102, and the lower chamber 111 is provided with an air inlet 101. A fan is installed at the exhaust port 102 to suck up fine particles from the air inlet 101 into the dust collector 11 for processing. The processed gas is discharged from the exhaust port 102. The pulse jet cleaning assembly 12 is installed on the upper chamber 112 for pulse jet cleaning of the filter bags 13. The dust hopper 2 is connected to the bottom of the dust collector 11.

[0055] Understandably, the pulse jet cleaning assembly 12 mainly uses compressed air to perform pulse jet cleaning by opening the pulse valve. It mainly consists of a compressed air tank, a pulse valve, and a jet pipe, which is an existing mature structure and will not be described in detail here.

[0056] It should be noted that pulse jet bag filters are existing and mature equipment. In specific implementation, the above-mentioned structure can be used, or other bag filter structures with pulse jet dust removal can be used. There is no single limitation here.

[0057] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A dust removal and ash unloading mechanism, characterized in that, include: Ash bucket; as well as The partition assembly, installed inside the ash hopper, includes a flipping drive mechanism and two hinged and flippable valve plates. The flipping drive mechanism is installed on the ash hopper, and the movable end of the flipping drive mechanism is connected to the valve plates, so that the two valve plates have a first position state in which they flip and fit together along the ash material movement direction, and a second position state in which they flip and separate the upper and lower spaces of the ash hopper from the ash material movement direction.

2. The dust removal and ash unloading mechanism according to claim 1, characterized in that, An opening is provided on one side of each of the two valve plates opposite to each other. A sealing member is provided on the inner side of the ash hopper. The sealing member is disengaged from the valve plate in the first position and opens the opening; it is in contact with the valve plate in the second position and closes the opening.

3. The dust removal and ash unloading mechanism according to claim 2, characterized in that, The closure includes a crossbar with a protrusion connected to it; in the second position, the protrusion is inserted into the opening; in the first position, a gap is formed between the protrusion and the opening.

4. The dust removal and ash unloading mechanism according to claim 1, characterized in that, The tilting drive mechanism includes two drive motors, which are respectively installed on both sides of the ash hopper, and the output shaft of the drive motor passes through the ash hopper and is connected to the corresponding valve plate.

5. The dust removal and ash unloading mechanism according to claim 4, characterized in that, Both sides of the ash hopper are equipped with dust covers fitted onto the outside of the drive motor.

6. The dust removal and ash unloading mechanism according to claim 3, characterized in that, The inside of the opening is provided with a sealing strip, and the top of the protrusion is arc-shaped.

7. The dust removal and ash unloading mechanism according to claim 2, characterized in that, It also includes a cover assembly and an ash transport trolley. The cover assembly is installed at the bottom of the ash hopper, and the ash transport trolley is detachably connected to the cover assembly to form a closed ash unloading space.

8. The dust removal and ash unloading mechanism according to claim 7, characterized in that, The cover assembly includes a plate and a flexible connector. The plate is fixedly connected to the bottom of the ash hopper, and the plate has an opening that communicates with the ash hopper. The two ends of the flexible connector are respectively connected to the plate and the magnetic frame.

9. The dust removal and ash unloading mechanism according to claim 8, characterized in that, The bottom of the flexible connector is connected to a magnetic frame, the outer side of which is covered with a sealing layer, and the magnetic frame is magnetically connected to the top of the ash transport trolley.

10. A dust removal device, characterized in that, It includes the dust removal and ash unloading mechanism as described in any one of claims 1-9 and the pulse bag dust collector housing, wherein the dust removal and ash unloading mechanism is installed at the bottom of the pulse bag dust collector housing.

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