Multi-directional discharge control device for small-particle-size materials

Abstract

The utility model discloses a small particle size material multidirectional discharge control device which comprises a discharge groove, a flow control valve and a discharge pipe, the flow control valve and the discharge pipe are sequentially arranged on the middle lower portion of the two end walls of the discharge groove, the top of the discharge groove is of an open structure, and a feeding mechanism is arranged on the middle lower portion of the discharge groove. The feeding mechanism comprises a material guiding supporting plate, material guiding inclined plates, a material guiding diaphragm and an air inlet, the material guiding supporting plate is arranged at the bottom of the discharging groove and extends upwards to the lower middle portion of the discharging groove, the material guiding inclined plates are symmetrically arranged on the two sides of the material guiding supporting plate, the material guiding inclined plates obliquely extend downwards to the position of the flow control valve, air holes are formed in the material guiding inclined plates, and the air inlets are communicated with the air holes. The top of the material guiding inclined plate is covered with the material guiding diaphragm, and air inlets are formed in the positions, on the two sides of the material guiding supporting plate, of the bottom of the feeding control bin. According to the utility model, the discharge flow is stable, the problem of easy blockage is solved, peak and valley values are greatly flattened, the accident risk in the subsequent process link is reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of material discharge control, and particularly relates to a multi-directional discharge control device for small-particle-size materials. Background Art

[0002] During the storage process of small-particle-size materials such as cement, mineral powder, fly ash, and limestone powder in the silo, due to sedimentation and extrusion, the gas content of the materials becomes low and the density becomes high, forming high-density materials. The high-density materials are unevenly distributed in the silo, with a large density change. The material density gradually increases from the center of the silo to the periphery and gradually decreases from the bottom to the top. During the unloading process, due to internal arch collapse or external air blowing intervention, the material density continuously changes dynamically, resulting in a huge change in its fluidity, causing the feeding amount to be extremely unstable, sometimes high and sometimes low. Excessive or overshooting feeding amount is likely to block the chute, trigger the current alarm of the elevator, and in severe cases, the elevator may be blocked and damaged, leading to accidents; while too little or insufficient feeding amount makes the equipment operate at low load, with low efficiency and energy waste.

[0003] Therefore, developing a control device that can conveniently and quickly discharge small-particle-size materials such as cement, mineral powder, fly ash, and limestone powder is the key to solving the problem. Content of the Utility Model

[0004] The utility model aims to provide a multi-directional discharge control device for small-particle-size materials.

[0005] The utility model is realized through the following technical solutions: It includes a discharge chute, a flow control valve, and a discharge pipe. Taking the midline of the discharge chute as the symmetry line, the flow control valve and the discharge pipe are sequentially arranged in the middle and lower parts of the two end walls of the discharge chute. The top of the discharge chute is an open structure. A feeding mechanism is arranged in the middle and lower part of the discharge chute. The feeding mechanism includes a guiding support plate, a guiding inclined plate, a guiding diaphragm, and an air inlet. The guiding support plate is arranged at the bottom of the discharge chute and extends upward to the middle and lower part of the discharge chute. The guiding inclined plates are symmetrically arranged on both sides of the guiding support plate, and each guiding inclined plate extends obliquely downward to the flow control valve, dividing the discharge chute into an upper discharge bin and a lower feeding control bin. A discharge port is arranged on the end face of the discharge bin to connect the flow control valve. The guiding inclined plate is provided with air holes. The guiding diaphragm covers the top of the guiding inclined plate. At least one air inlet is respectively arranged at the bottom of each feeding control bin on both sides of the guiding support plate, and each air inlet is connected to a compressed air source through a pipeline.

[0006] The beneficial effects of the present utility model are as follows: Coarse opening adjustment is carried out through a flow control valve, and the adjustment can be set to large-cycle and small-step control; then, according to the size of the material flow, the gas volume at the air inlet of the feeding control bin is quickly and frequently adjusted, so that the gas volume and air pressure in the feeding control bin can quickly respond to the high-density material entering the control chute from the feeding port, and the gas volume adjustment at the air inlet can be set to small-cycle and large-step control; finally, the material flow flowing out of the discharge port of the discharge pipe is made stable, the problem of easy blockage is solved, the peaks and valleys are greatly flattened, the accident risk in subsequent process links is reduced, and the energy consumption is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic structural diagram of the present utility model;

[0008] Figure 2 It is a schematic external structural diagram of the present utility model;

[0009] Figure 3 It is a schematic structural diagram of the guide plate and the guide diaphragm;

[0010] Reference numerals in the figure: 1~discharge chute, 2~discharge bin, 3~feeding control bin, 4~discharge port, 5~maintenance window, 6~guide support plate, 7~guide plate, 8~vent hole, 9~guide diaphragm, 10~support beam, 11~air inlet, 12~flow control valve, 13~valve pipe, 14~valve disc, 15~valve rod, 16~operation part, 17~discharge pipe, 18~observation window. SPECIFIC EMBODIMENTS

[0011] In order to enable those skilled in the art in this technical field to better understand the technical solution of the present utility model, the following detailed description of its specific embodiments is provided in conjunction with the accompanying drawings.

[0012] As Figures 1 to 3The small-particle-size material multi-directional discharge control device shown includes a discharge chute 1, a flow control valve 12, and a discharge pipe 17. Taking the midline of the discharge chute 1 as the symmetry line, the flow control valve 12 and the discharge pipe 17 are sequentially arranged in the middle and lower parts of the two end walls of the discharge chute 1. The top of the discharge chute 1 is an open structure. A feeding mechanism is arranged in the middle and lower part of the discharge chute 1. The feeding mechanism includes a material guiding support plate 6, a material guiding inclined plate 5, a material guiding diaphragm 9, and an air inlet 11. The material guiding support plate 6 is arranged at the bottom of the discharge chute 1 and extends upward to the middle and lower part of the discharge chute 1. The material guiding inclined plates 5 are symmetrically arranged on both sides of the material guiding support plate 6. Each material guiding inclined plate 5 extends obliquely downward to the flow control valve 12. The upper end of each material guiding inclined plate 5 is fixedly connected to the material guiding support plate 6, and the lower end is fixedly connected to the lower part of the end wall of the discharge chute 1, thereby cooperating with the material guiding support plate 6 to divide the discharge chute 1 into an upper discharge bin 2 and two independent lower feeding control bins 3. The material guiding inclined plate 5 is provided with air permeable holes 8. The material guiding diaphragm 9 covers the top of the material guiding inclined plate 5. At least one air inlet 11 is respectively arranged at the bottom of each feeding control bin 3 on both sides of the material guiding support plate 6, and each air inlet 11 is connected to a compressed air source through a pipeline.

[0013] Convex discharge ports 4 are respectively arranged at the lower parts of the two end walls of the discharge chute 1, and the discharge ports 4 are sequentially connected to the flow control valve 12 and the discharge pipe 17.

[0014] A plurality of support beams 10 are arranged on the bottom surface of the material guiding plate 7. The two ends of the support beams 10 are respectively connected to the side walls of the feeding control bin 3, and the material guiding plate 7 is supported by the support beams 10. The air permeable holes 8 are all arranged on the material guiding inclined plate 5.

[0015] The top height of the material guiding support plate 6 is not lower than the top height of the discharge port of the discharge bin 2, so that when the discharge bin 2 discharges materials from both sides, there is no mutual interference.

[0016] The material guiding diaphragm 9 is made of a breathable material.

[0017] The material guiding diaphragm 9 is a gasification cloth, which is often called chute breathable cloth, air chute canvas, boiling plate vulcanized cloth, etc. It can fluidize powdery and granular materials through compressed air, increase the flow performance of the materials, avoid bridging and arching, so as to ensure smooth discharging. In addition, the gasification cloth is also suitable for high-temperature environments and is often used in processes such as grinding air chute conveying.

[0018] The discharge pipe 17 is arranged in an L-shaped structure. An observation window 18 is arranged in the middle and upper part of the outer side wall of the discharge pipe 17, and the observation window 18 is arranged opposite to the feeding end of the discharge pipe 17. A sealing plate made of a transparent material is hermetically arranged on the observation window 18 to facilitate viewing the material discharge situation in the discharge pipe 17.

[0019] Maintenance windows 5 are respectively provided on both sides of the center line of the discharging chute 1, and the maintenance window 5 is provided on the front wall or the rear wall of the discharging chute 1. A sealing plate is detachably provided on the maintenance window 5, and the two are bolted, or one end of the sealing plate is movably hinged to the maintenance window 5; when the two are movably hinged, the other end of the sealing plate is provided with a buckle to connect the maintenance window 5, and a sealing rubber ring is provided on the edge of the sealing plate or the maintenance window 5 to prevent material leakage.

[0020] The discharge pipe 17 is arranged in an L-shaped structure, and the bottom surface of the discharge pipe 17 is arranged obliquely to facilitate discharging.

[0021] The flow control valve 12 includes a valve pipe 13, a valve disc 14, a valve rod 15, and an operation part 16. The valve disc 14 is arranged in the valve pipe 13 through the valve rod 15, and the valve rod 15 is perpendicular to the axis of the valve pipe 13. A bearing adapted to the valve rod 15 is provided on the pipe wall of the valve pipe 13. Any end of the valve rod 15 passes through the pipe wall of the valve pipe 13 to connect the operation part 16. The operation part 16 controls the valve rod 15 to drive the valve disc 14 to rotate, realizing the opening and closing of the valve pipe 13.

[0022] The valve disc 14 is arranged in a semi-cylindrical structure. To ensure the normal operation of the valve disc 14, the valve pipe 13 is in a square structure, that is, its cross-section is in a square structure.

[0023] Further, the valve disc 14 is arranged in a hemispherical structure. To ensure the normal operation of the valve disc 14, the valve pipe 13 is in a cylindrical structure, that is, its cross-section is in a circular structure.

[0024] The inside of the valve pipe 13 is arranged in a trumpet shape, and its large-mouth end is connected to the discharge pipe 17.

[0025] Further, to ensure the normal operation of the valve disc 14, the valve pipe 13 is in a square structure, that is, its cross-section is in a square structure.

[0026] The operation part 16 is an operation handle or a motor, realizing manual control or automatic control to adjust the discharge amount of small-particle-size materials; when the operation part 16 is an operation handle, a nut threadedly engaged with the operation handle is provided outside the pipe wall of the valve pipe 13. By rotating the operation handle in the nut, the opening degree of the valve disc 14 is adjusted, and the posture of the valve disc 14 is fixed to avoid random rotation.

[0027] The discharging chute 1 and the flow control valve 12 are connected by a flange, and the bottom of the discharging end of the inclined discharging chute 1, that is, the bottom of the discharging bin 2, is flush with the bottom of the flange connected thereto to ensure that the material can be discharged from the discharging chute 1 and avoid interference and blockage. The flow control valve 12 and the discharge pipe 17 are connected by a flange.

[0028] Working mode of the utility model: After small-particle-size materials (such as cement, mineral powder, fly ash, limestone powder, etc.) enter the discharge chute 1, they will directly fall onto the discharge diaphragms 9 of the respective discharge plates 7 on both sides of the guide support plate 6, and then slide downward along the discharge diaphragms 9. After the discharge amount is adjusted and controlled by the respective flow control valves 12, they are discharged from the respective discharge pipes 17. During the above discharge process, compressed air source conveys compressed gas into the feeding control chamber 3 from the respective air inlets 11. The compressed gas passes through the air permeable holes 8 on the discharge plates 7 to contact the discharge diaphragms 9, and will penetrate through the discharge diaphragms 9 and mix into the powder material, thereby increasing the fluidity of the powder material. At the same time, under the action of the self-gravity of the powder material and the guiding of the discharge plates 7, the fluidity of the compressed gas provides a thrust to the powder material, so that the powder material and the compressed gas flow towards the flow control valves 12. At this time, the flow control valves 12 are opened to naturally discharge the powder material, and only by conveying compressed gas throughout the powder discharge process can the smooth discharge of the powder material be ensured, solving the problems of unstable discharge and easy blockage; and the faults occurring in the discharge chute 1 can be repaired and maintained through the respective inspection windows 5.

Claims

1. A multi-directional discharge control device for small-particle-size materials, comprising a discharge trough (1), a flow control valve (12), and a discharge pipe (17), characterized in that: Taking the mid - line of the discharge chute (1) as the symmetry line, a flow control valve (12) and a discharge pipe (17) are successively arranged in the middle - lower parts of the two end - walls of the discharge chute (1). The top of the discharge chute (1) is an open structure. A feeding mechanism is arranged in the middle - lower part of the discharge chute (1). The feeding mechanism includes a material - guiding support plate (6), a material - guiding inclined plate (5), a material - guiding diaphragm (9), and an air inlet (11). The material - guiding support plate (6) is arranged at the bottom of the discharge chute (1) and extends upward to the middle - lower part of the discharge chute (1). The material - guiding inclined plates (5) are symmetrically arranged on both sides of the material - guiding support plate (6), and each material - guiding inclined plate (5) extends obliquely downward to the flow control valve (12), dividing the discharge chute (1) into an upper discharge bin (2) and a lower feeding control bin (3). A discharge port on the end - face of the discharge bin (2) is connected to the flow control valve (12). The material - guiding inclined plate (5) is provided with ventilation holes (8). The material - guiding diaphragm (9) covers the top of the material - guiding inclined plate (5). At least one air inlet (11) is respectively arranged at the bottom of each feeding control bin (3) on both sides of the material - guiding support plate (6).

2. The multi-directional discharge control device for small-particle materials according to claim 1, wherein: Convex discharge ports (4) are respectively arranged at the lower parts of the two end - walls of the discharge chute (1), and the discharge ports (4) are successively connected to the flow control valve (12) and the discharge pipe (17).

3. The multi-directional discharge control device for small-particle materials according to claim 1, characterized in that: The ventilation holes (8) are all arranged on the material - guiding inclined plate (5), and the material - guiding diaphragm (9) is made of a breathable material.

4. The multi-directional discharge control device for small-particle materials according to claim 1, wherein: The top height of the material - guiding support plate (6) is not lower than the top height of the discharge port of the discharge bin (2).

5. The small-particle-size material multi-directional discharge control device according to claim 1 or 3, characterized in that: The material - guiding diaphragm (9) is a gasification cloth.

6. The multi-directional discharge control device for small-particle materials according to claim 1, characterized in that: The discharge pipe (17) is arranged in an L - shaped structure. An observation window (18) is arranged in the middle - upper part of the outer side wall of the discharge pipe (17), and the observation window (18) is arranged opposite to the feeding end of the discharge pipe (17).

7. The multi-directional discharge control device for small-particle materials according to claim 1, characterized in that: The flow control valve (12) includes a valve pipe (13), a valve plate (14), a valve rod (15), and an operation part (16). The valve plate (14) is arranged in the valve pipe (13) through the valve rod (15), and the valve rod (15) is perpendicular to the axis of the valve pipe (13). A bearing adapted to the valve rod (15) is arranged on the pipe wall of the valve pipe (13). Either end of the valve rod (15) passes through the pipe wall of the valve pipe (13) to connect the operation part (16). The operation part (16) controls the valve rod (15) to drive the valve plate (14) to rotate, realizing the opening and closing of the valve pipe (13).

8. The multi-directional discharge control device for small particle size materials according to claim 7, wherein: The valve plate (14) is arranged in a semi - cylindrical or hemispherical structure.

9. The multi-directional discharge control device for small particle size materials according to claim 7, wherein: The inside of the valve pipe (13) is arranged in a flared structure, and its large - mouth end is connected to the discharge pipe (17).

10. The multi-directional discharge control device for small-particle materials according to claim 7, characterized in that: The operation part (16) is an operation handle or a motor.

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