A vertical mill powder conveying mechanism

Abstract

The application relates to a vertical mill powder conveying mechanism, belonging to the technical field of conveying equipment, which comprises a main conveying belt, a dust falling bin arranged above the main conveying belt, a discharge port arranged at the lower end of the dust falling bin, a bag-type dust collector arranged at one side of the dust falling bin, a connecting pipe in communication with the dust falling bin and fixedly connected with the dust falling bin, a draft fan installed on the connecting pipe and used for conveying dust in the dust falling bin to one side of the bag-type dust collector, a plurality of storage boxes arranged in the dust falling bin, a driving device arranged in the dust falling bin and used for driving the storage boxes to move in the dust falling bin, a feeding pipe fixedly connected with the upper portion of the dust falling bin and in communication with the dust falling bin, a discharge end of the feeding pipe arranged in the dust falling bin, a control assembly arranged in the dust falling bin and used for controlling the feeding pipe to add powder into the storage boxes, and a recovery mechanism arranged between the bag-type dust collector and the conveying belt and used for recovering powder at the bag-type dust collector. The application has the effect of reducing dust generated when powder falls on the conveying belt.

Description

Technical Field

[0001] This application relates to the technical field of conveying equipment, and in particular to a powder conveying mechanism for a vertical mill. Background Technology

[0002] Vertical roller mills, also known as vertical mills or vertical roller mills, are high-efficiency grinding equipment widely used in industries such as cement, power, metallurgy, chemical and non-metallic minerals.

[0003] In related technologies, materials ground by vertical mills are usually transported to the next process via conveyor belts. However, after being discharged from the vertical mill, the powder falls onto the conveyor belt. Due to the light weight of the powder, it is easy for it to fly around, causing environmental pollution in the production area. At the same time, the dust can also affect the health of workers. Summary of the Invention

[0004] In order to reduce the dust generated when powder falls onto the conveyor belt, this application provides a powder conveying mechanism for a vertical mill.

[0005] The powder conveying mechanism for a vertical mill provided in this application adopts the following technical solution:

[0006] A powder conveying mechanism for a vertical mill includes a main conveyor belt, a dust collection bin above the main conveyor belt, a discharge port at the lower end of the dust collection bin, a bag filter on one side of the dust collection bin, the bag filter being fixedly connected to the dust collection bin and connected by a connecting pipe, an induced draft fan installed on the connecting pipe for conveying dust from the dust collection bin to the side of the bag filter, multiple storage boxes inside the dust collection bin, a drive device inside the dust collection bin for moving the storage boxes within the dust collection bin, a feed pipe fixedly connected to and connected to the upper part of the dust collection bin, the discharge end of the feed pipe being placed inside the dust collection bin, a control component inside the dust collection bin for controlling the feed pipe to add powder to the storage boxes, and a recovery mechanism for recovering powder from the bag filter between the bag filter and the main conveyor belt.

[0007] By adopting the above technical solution, the material discharged from the vertical mill can enter the dust collection bin through the feed pipe. Then, the drive device drives the storage box to collect the material discharged from the feed pipe. At the same time, the control component controls the timing and amount of material added to the storage box through the feed pipe. Then, the drive device moves the storage box to one side of the conveyor belt and pours the powder in the storage box onto the main conveyor belt. Simultaneously, by starting the induced draft fan, the dust generated in this process is conveyed into the bag filter. In this way, not only can the dust be collected through the dust collection bin and the bag filter, but the storage box and the reduced falling height of the material can also suppress the amount of dust generated. This reduces the dust generated when the powder falls onto the conveyor belt, thus improving the working environment for the staff.

[0008] Optionally, the driving device is configured as a vertical conveyor belt located inside the dust collection chamber, the conveying direction of the vertical conveyor belt being perpendicular to the surface of the main conveyor belt, and the storage box being fixed to the surface of the vertical conveyor belt.

[0009] By adopting the above technical solution, the vertical conveyor belt can be activated to move the vertical conveyor belt.

[0010] Optionally, the control component includes a first position sensor, a second position sensor, an electrically controlled valve, and a controller. The first position sensor is fixed to the storage box, the second position sensor is fixed to the inner wall of the dust collection chamber, the electrically controlled valve is installed on the feed pipe, and the first position sensor, the second position sensor, and the electrically controlled valve are all connected to the controller.

[0011] By adopting the above technical solution, the position of the storage box can be determined by the distance between the first position sensor and the second position sensor, and the controller can control the electric valve to open, so that the feeding pipe can add materials into the storage box more accurately.

[0012] Optionally, the upper end of the storage box is provided with a sealing plate and a flipping plate, the upper end of the sealing plate is provided with a feed inlet, and the flipping plate is located on the side of the storage box away from the vertical conveyor belt.

[0013] By adopting the above technical solution, the diffusion of materials in the storage box can be limited by setting a flip plate and a sealing plate. When the storage box is tilted, the flip plate can be flipped and the end of the flip plate abuts against the conveyor belt, thereby allowing the material to slide down the flip plate onto the main conveyor belt, thereby reducing the generation of dust.

[0014] Optionally, a rubber hose is fixed to one end of the feeding pipe inside the dust suppression chamber, and the outlet end of the rubber hose is located at the inlet.

[0015] By adopting the above technical solution, the material entering the storage box from the self-feeding pipe can be restricted by the rubber hose, thus suppressing the generation of dust during the process. At the same time, the rubber hose has a certain degree of elasticity, which can reduce its impact on the storage box.

[0016] Optionally, a baffle is fixed to the side wall of the dust collection chamber. When the baffle abuts against the tilting plate, the tilting plate tilts and causes the powder to slide down the tilting plate onto the main conveyor belt.

[0017] By adopting the above technical solution, when the storage box is placed under the dust collection box along the vertical conveyor belt, it can be abutted against the tilting plate by the baffle, thereby opening the tilting plate in advance and reducing the occurrence of the tilting plate being unable to tilt due to material blockage.

[0018] Optionally, the recycling mechanism includes a collection pipe installed at the lower end of the bag filter, an auger rotatably connected inside the collection pipe, a drive motor for driving the auger to rotate on the collection pipe, a secondary conveyor belt mounted on the main conveyor belt, the conveying direction of the secondary conveyor belt being perpendicular to the conveying direction of the main conveyor belt, a plurality of recycling boxes fixedly connected to the secondary conveyor belt along the length of the secondary conveyor belt, the upper end of the recycling box being open, an extrusion plate and a first cylinder for driving the extrusion plate to extrude the material in the recycling box being mounted on the secondary conveyor belt, an atomizing nozzle for spraying the gap between the collection pipe and the recycling box being mounted on the secondary conveyor belt, the discharge end of the collection pipe being positioned above the recycling box, and a dropping component for dropping the powder extruded by the extrusion plate in the recycling box onto the main conveyor belt being mounted on the secondary conveyor belt.

[0019] By adopting the above technical solution, the drive motor is started to rotate the auger, which concentrates the dust collected by the bag filter towards the discharge end of the collection pipe. Then, the secondary conveyor belt is controlled to place one of the recycling boxes directly below the discharge end of the collection pipe. At the same time, the atomizing nozzle is activated to spray the gap between the collection pipe and the recycling box, thereby reducing the spread of dust during the process and humidifying the powder. Then, the extrusion plate is controlled to compress the dust in the recycling box. After the recycling box moves to the lowering component, the dust block compressed in the recycling box can be lowered onto the main conveyor belt.

[0020] Optionally, the bottom of the recycling box is provided with an opening and a sealing plate. The sealing plate is fixedly connected to the bottom of the recycling box with multiple springs. The secondary conveyor belt opposite the recycling box has a hole. The lowering assembly includes a second cylinder installed in the secondary conveyor belt. The telescopic end of the second cylinder faces the side of the main conveyor belt.

[0021] By adopting the above technical solution, the second cylinder can be controlled to abut against the sealing plate, and then the spring can be extended to cause the dust block placed in the recycling box to fall out of the recycling box and onto the main conveyor belt.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Not only can dust be collected through dust collection bins and bag filters, but the amount of dust generated can also be suppressed by using storage boxes and reducing the falling height of the material. This reduces the dust generated when the powder falls onto the conveyor belt, thus providing a better working environment for the staff.

[0024] 2. When the storage box is tilted, the tilting plate can be tilted so that its end abuts against the conveyor belt, thereby allowing the material to slide down the tilting plate onto the conveyor belt, thus reducing dust generation;

[0025] 3. The gap between the collection pipe and the recycling box can be sprayed through the atomizing nozzle, thereby reducing the spread of dust during the process and humidifying the powder. Then, by controlling the extrusion plate, the dust in the recycling box is compressed into the recycling box. After the recycling box moves to the lowering component, the dust block compressed into the recycling box can be lowered onto the main conveyor belt. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the driving device according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the secondary conveyor belt according to an embodiment of this application;

[0029] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Main conveyor belt; 2. Dust settling bin; 21. Discharge port; 3. Bag filter; 4. Connecting pipe; 41. Exhaust fan; 5. Storage box; 51. Sealing plate; 511. Feed inlet; 52. Tilting plate; 6. Drive unit; 7. Feeding pipe; 8. Control component; 81. First position sensor; 82. Second position sensor; 83. Electrically controlled valve; 9. Water pipe; 10. Rubber hose; 11. Stop bar; 12. Recycling mechanism; 121. Collection pipe; 122. Screwdriver; 123. Drive motor; 124. Secondary conveyor belt; 125. Recycling box; 1251. Sealing plate; 1252. Spring; 126. First cylinder; 127. Extrusion plate; 128. Atomizing nozzle; 129. Lowering component; 1291. Mounting rod; 1292. Second cylinder. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail.

[0032] This application discloses a powder conveying mechanism for a vertical mill, referring to... Figure 1 The system includes a main conveyor belt mounted on the ground. In this embodiment, all conveyor belts are equipped with motors and can be actively driven. A dust suppression bin is located above the starting point of the main conveyor belt. The dust suppression bin is rectangular in shape and has a discharge port at its lower end. The dust suppression bin is mounted on the ground.

[0033] A bag filter is installed on one side of the dust settling chamber. The bag filter is mounted on the ground and a connecting pipe is installed between the bag filter and the dust settling chamber. One end of the connecting pipe is fixedly connected to the bag filter and the other end of the connecting pipe is divided into two strands and fixedly connected to the upper side wall of the dust settling chamber. An induced draft fan is installed on the connecting pipe to transport the dust in the dust settling chamber to one side of the bag filter.

[0034] The dust suppression chamber contains multiple storage boxes, and a drive device is provided within the dust suppression chamber to move the storage boxes within the chamber. In this embodiment, the drive device is a vertical conveyor belt, the conveying direction of which is perpendicular to the surface of the main conveyor belt. The multiple storage boxes are equidistantly arranged along the surface of the vertical conveyor belt, and the storage boxes are fixedly connected to the surface of the conveyor belt.

[0035] This activates the vertical conveyor belt, which in turn drives multiple storage boxes to move along the surface of the vertical conveyor belt.

[0036] The storage box has an open top. The upper surface of the storage box is equipped with a sealing plate and a flip plate. The sealing plate and the flip plate completely block the opening at the top of the storage box. The sealing plate has a feed port. The sealing plate is fixedly connected to the storage box. The flip plate is located on the side of the storage box away from the vertical conveyor belt, and the end of the flip plate away from the vertical conveyor belt is rotatably connected to the storage box.

[0037] A baffle is fixedly connected to the side wall of the dust collection bin. When the baffle comes into contact with the tilting plate, the tilting plate will tilt and cause the powder to slide down the tilting plate onto the main conveyor belt.

[0038] When the storage box rotates to the lower part of the vertical conveyor belt, the storage box will tilt, and at the same time the stop bar will abut against the tilting plate. Then the tilting plate can be flipped and the end of the tilting plate abuts against the conveyor belt, so that the material can slide down the tilting plate onto the main conveyor belt and be conveyed on the conveyor belt.

[0039] The upper part of the dust suppression bin is fixedly connected to and connected to a feeding pipe. The discharge end of the feeding pipe is placed inside the dust suppression bin. The dust suppression bin is equipped with a control component for controlling the feeding pipe to add powder to the storage box.

[0040] The control assembly includes a first position sensor, a second position sensor, an electrically controlled valve, and a controller. Multiple first position sensors are configured, with one sensor installed on each storage bin. Each first position sensor is fixedly connected to the side wall of the storage bin away from the vertical conveyor belt. The second position sensor is fixedly connected to the inner wall of the upper part of the dust-suppressing hopper. The electrically controlled valve is installed on the feed pipe and is located outside the dust-suppressing hopper. The controller is not shown in the figure; the first position sensors, second position sensors, and electrically controlled valves are all connected to the controller.

[0041] Therefore, when the vertical conveyor belt moves multiple storage boxes, the position of the storage box can be determined by the distance between the first position sensor and the second position sensor. When the distance between the first position sensor and the second position sensor reaches its minimum, the controller can control the electric valve to open, allowing the feeding pipe to accurately add a certain amount of material into the storage box. Simultaneously, to suppress dust generation during this process, a rubber hose is fixedly connected to one end of the feeding pipe inside the dust suppression chamber. When the distance between the first position sensor and the second position sensor reaches its shortest, the outlet end of the rubber hose is positioned at the inlet.

[0042] A recovery mechanism for collecting powder from the bag filter is installed between the bag filter and the main conveyor belt.

[0043] The recycling mechanism includes a collection pipe installed at the lower end of the bag filter. An auger is rotatably connected inside the collection pipe. The discharge end of the collection pipe is positioned above the main conveyor belt. A drive motor is installed on the side of the collection pipe furthest from the main conveyor belt, and the output shaft of the drive motor passes through the side wall of the collection pipe and is fixedly connected to the auger. A secondary conveyor belt is mounted above the main conveyor belt, with its conveying direction perpendicular to that of the main conveyor belt. Multiple recycling boxes are fixedly connected to the secondary conveyor belt and equidistantly arranged along its length.

[0044] The recycling box is rectangular in shape with an open top. A compression plate and a first cylinder are mounted on the secondary conveyor belt. The piston rod of the first cylinder is fixedly connected to the compression plate.

[0045] This starts the drive motor, which drives the auger to rotate and transports the powder in the collection pipe to the recycling box. The powder is then concentrated in the recycling box. When the recycling box containing the powder is placed under the extrusion plate, the first cylinder can be activated to press the material into the recycling box.

[0046] The secondary conveyor belt is equipped with atomizing nozzles and a water pipe for spraying the gap between the collection pipe and the recycling box. The end of the transport pipe near the collection pipe is set as a ring, and the atomizing nozzles are set at equal intervals around the ring of the water pipe. The end of the water pipe away from the collection pipe is connected to the water supply equipment in the plant area.

[0047] Water can then be supplied to the atomizing nozzle via a water pipe. The nozzle is then activated, spraying water into the gap between the collection pipe and the recovery box, thereby reducing dust dispersion and humidifying the powder.

[0048] The secondary conveyor belt is equipped with a discharge assembly for discharging the powder that has been squeezed by the extrusion plate in the recycling box onto the main conveyor belt.

[0049] The bottom of the recycling box has an opening and a sealing plate. Multiple springs are fixedly connected to the sealing plate and the bottom of the recycling box. Holes are formed on the surface of the secondary conveyor belt opposite the recycling box. The lowering assembly includes a second cylinder and a mounting rod, with the mounting rod fixedly connected to the secondary conveyor belt. The second cylinder is fixedly connected to the mounting rod, with its extension end facing the surface of the main conveyor belt and abutting against the inner surface of the secondary conveyor belt.

[0050] Therefore, when the recycling box is placed directly below the second cylinder, the second cylinder can be controlled to make it abut against the sealing plate. Then, the spring can be extended, and the sealing plate will disengage the dust block placed in the recycling box from the recycling box. The dust block can then fall onto the main conveyor belt.

[0051] The implementation principle of the powder conveying mechanism of a vertical mill in this application embodiment is as follows: the material discharged from the vertical mill can enter the dust collection bin through the feed pipe. Then, by controlling the vertical conveyor belt, the vertical conveyor belt drives the storage box to collect the material discharged from the feed pipe. At the same time, the timing and amount of material added to the storage box by the feed pipe are controlled by the control component. Then, the storage box can move the powder to the main conveyor belt through the tilting plate. At the same time, by starting the induced draft fan, the dust generated in this process is conveyed to the bag dust collector, and the dust is collected by the bag dust collector.

[0052] Once the dust accumulates to a certain level inside the baghouse dust collector, the secondary conveyor belt is controlled to position the recovery box directly below the discharge end of the collection pipe. The drive motor is then activated, causing the auger to rotate and concentrate the collected dust towards the discharge end of the collection pipe, adding material into the recovery box. The material is then humidified using atomizing nozzles.

[0053] The secondary conveyor belt is then activated. When the recycling box containing the material is positioned below the pressure plate, the second cylinder is controlled to compress the dust inside the recycling box. Subsequently, as the recycling box moves to the lowering assembly, the compressed dust particles are lowered onto the main conveyor belt.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A powder conveying mechanism for a vertical mill, comprising a main conveyor belt (1), characterized in that: A dust collection bin (2) is provided above the main conveyor belt (1). A discharge port (21) is provided at the lower end of the dust collection bin (2). A bag filter (3) is provided on one side of the dust collection bin (2). The bag filter (3) is fixedly connected to the dust collection bin (2) and connected by a connecting pipe (4). An induced draft fan (41) is installed on the connecting pipe (4) to convey dust from the dust collection bin (2) to the side of the bag filter (3). Multiple storage boxes (5) are provided inside the dust collection bin (2). A drive device (6) is provided inside the dust collection bin (2) to move the storage boxes (5) within the dust collection bin (2). The drive device (6) is configured as a vertical conveyor belt located inside the dust collection bin (2). The conveying direction is perpendicular to the surface of the main conveyor belt (1). The storage box (5) is fixed to the surface of the vertical conveyor belt. The upper part of the dust collection bin (2) is fixed and connected to the feeding pipe (7). The discharge end of the feeding pipe (7) is placed inside the dust collection bin (2). The dust collection bin (2) is equipped with a control component (8) for controlling the feeding pipe (7) to add powder to the storage box (5). A recovery mechanism (12) for recovering powder from the bag filter (3) is provided between the bag filter (3) and the main conveyor belt (1). The control component (8) includes a first position sensor (81), a second position sensor (82), an electric control valve (83), and a controller. The first position sensor (81) is fixed to the surface of the vertical conveyor belt. The second position sensor (82) is fixed to the inner wall of the dust collection chamber (2) and the electric control valve (83) is installed on the feed pipe (7). The first position sensor (81), the second position sensor (82), and the electric control valve (83) are all connected to the controller. The upper end of the storage box (5) is provided with a sealing plate (51) and a flip plate (52). The upper end of the sealing plate (51) is provided with a feed inlet (511). The flip plate (52) is located on the side of the storage box (5) away from the vertical conveyor belt. One end of the feed pipe (7) placed inside the dust collection chamber (2) is fixed with a rubber hose (10). The discharge end of the rubber hose (10) is placed in the feed pipe. At the opening (511), a baffle (11) is fixedly connected to the side wall of the dust collection chamber (2). When the baffle (11) abuts against the tilting plate (52), the tilting plate (52) tilts and causes the powder to slide down the tilting plate (52) onto the main conveyor belt (1). The recycling mechanism (12) includes a collection pipe (121) installed at the lower end of the bag filter (3). An auger (122) is rotatably connected inside the collection pipe (121). A drive motor (123) for driving the auger (122) to rotate is provided on the collection pipe (121). A secondary conveyor belt (124) is mounted on the main conveyor belt (1). The conveying direction of the secondary conveyor belt (124) is perpendicular to the conveying direction of the main conveyor belt (1).Multiple recycling boxes (125) are fixedly connected to the secondary conveyor belt (124) and arranged along the length of the secondary conveyor belt (124). The upper end of the recycling box (125) is set as an opening. An extrusion plate (127) and a first cylinder (126) for driving the extrusion plate (127) to extrude the material in the recycling box (125) are installed on the secondary conveyor belt (124). An atomizing nozzle (128) for spraying the gap between the collecting pipe (121) and the recycling box (125) is installed on the secondary conveyor belt (124). The discharge end of the collecting pipe (121) is placed above the recycling box (125). A lowering assembly (129) is installed on the main conveyor belt (1) to lower the powder squeezed by the extrusion plate (127) in the recycling box (125) onto the main conveyor belt (1). The bottom end of the recycling box (125) is provided with an opening and a sealing plate (1251). Multiple springs (1252) are fixedly connected to the bottom end of the sealing plate (125) and the recycling box (125). A hole is opened on the surface of the secondary conveyor belt (124) opposite to the recycling box (125). The lowering assembly (129) includes a second cylinder (1292) installed in the secondary conveyor belt (124). The telescopic end of the second cylinder (1292) faces the side of the main conveyor belt (1).

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