Unidirectional discharge control device for small-particle-size materials

Abstract

The utility model discloses a small particle size material one-way discharge control device which comprises a discharge chute, a flow control valve and a discharge pipe which are sequentially connected into a whole, the top of the discharge chute is of an open structure and used for receiving materials, any end wall of the discharge chute is sequentially connected with the flow control valve and the discharge pipe, and the flow control valve is connected with the discharge pipe. A feeding mechanism is arranged on the lower middle portion of the discharging chute and comprises a material guiding plate, a material guiding diaphragm and an air inlet, the material guiding plate is arranged on the lower middle portion of the discharging chute and divides the discharging chute into a discharging bin on the upper portion and a feeding control bin on the lower portion, air holes are formed in the material guiding plate, the top of the material guiding plate is covered with the material guiding diaphragm, and the air inlet is formed in the feeding control bin. And at least one air inlet is formed in the bottom of the feeding control bin. According to the utility model, the discharge flow of the discharge pipe 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 unidirectional discharge control device for small-particle-size materials. Background Technique

[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 undergoes dynamic changes, resulting in a huge change in its fluidity, causing the feeding volume to be extremely unstable, sometimes high and sometimes low. If the feeding volume is too much or overshoots, it is easy to block the chute, and the elevator current alarms. In severe cases, the elevator stalls and is damaged, leading to accidents; while if the feeding volume is too little or underfed, the equipment operates at low load, with low efficiency and energy consumption 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 unidirectional 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, which are connected in sequence as a whole. The top of the discharge chute is set as an open structure for receiving materials. A flow control valve and a discharge pipe are connected in sequence to any end wall of the discharge chute. A feeding mechanism is arranged in the middle and lower part of the discharge chute. The feeding mechanism includes a guide plate, a guide diaphragm, and an air inlet. The guide plate is arranged in the middle and lower part of the discharge chute, 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 guide plate is provided with air holes, and the guide diaphragm covers the top of the guide plate. At least one air inlet is arranged at the bottom of the feeding control bin, and the air inlet is connected to a compressed air source through a pipeline.

[0006] The beneficial effect of the utility model is: Coarse opening adjustment is carried out through the flow control valve, and the adjustment can be set to large-period and small-step control; then, according to the size of the material flow rate, the air volume of the air inlet of the feeding control bin is quickly and frequently adjusted, so that the air volume and air pressure in the feeding control bin can quickly respond to the high-density materials entering the control chute from the feeding port. Moreover, the air volume adjustment of the air inlet can be set to small-period and large-step control; finally, the material flow rate 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 of subsequent process links is reduced, and the energy consumption is reduced. Description of the Drawings

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

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

[0009] Figure 3 is a schematic top view structural diagram of the present utility model;

[0010] Figure 4 is a schematic structural diagram of the material guiding plate and the material guiding diaphragm;

[0011] Reference numerals in the figure: 1~discharge chute, 2~discharge bin, 3~feeding control bin, 4~maintenance window, 5~material guiding plate, 6~vent hole, 7~material guiding diaphragm, 8~air inlet, 9~flow control valve, 10~valve pipe, 11~valve disc, 12~valve rod, 13~operation part, 14~discharge pipe, 15~observation window, 16~support beam. Specific embodiments

[0012] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present utility model, the following will describe its specific embodiments in detail with reference to the accompanying drawings.

[0013] As Figures 1 to 4 shown in the small particle size material one-way discharge control device, including a discharge chute 1, a flow control valve 9, and a discharge pipe 14, which are connected in sequence as a whole. The top of the discharge chute 1 is provided with an open structure for receiving materials. The flow control valve 9 and the discharge pipe 14 are connected in sequence to any end wall of the discharge chute 1. A feeding mechanism is provided in the middle and lower part of the discharge chute 1. The feeding mechanism includes a material guiding plate 5, a material guiding diaphragm 7, and an air inlet 8. The material guiding plate 5 is arranged in the middle and lower part of the discharge chute 1. The upper and lower ends of each material guiding plate 5 are respectively fixedly connected to the end walls of the discharge chute 1, dividing the discharge chute 1 into an upper discharge bin 2 and a lower feeding control bin 3. A discharge port is provided on the end face of the discharge bin 2 and is connected to the flow control valve 9; in actual installation and use, the material guiding plate 5 can be parallel to the bottom surface of the discharge chute 1, or the material guiding plate 5 can be adjusted to point obliquely downward towards the flow control valve 9, that is, in a state non-parallel to the bottom surface of the discharge chute 1; the material guiding plate 5 is provided with vent holes 6, the material guiding diaphragm 7 covers the top of the material guiding plate 5, and at least one air inlet 8 is provided at the bottom of the feeding control bin 3, and the air inlet 8 is connected to a compressed air source through a pipeline.

[0014] The bottom surface of the material guiding plate 5 is provided with a plurality of support beams 16, and both ends of the support beams 16 are respectively connected to the side walls of the feeding control bin 3 to support the material guiding plate 5 through the support beams 16.

[0015] All the vent holes 6 are arranged on the material guiding plate 5.

[0016] The material of the material guiding diaphragm 7 is a breathable material.

[0017] The material guiding diaphragm 7 is a gasification cloth, which is often called chute breathable cloth, air chute canvas, fluidized plate vulcanized cloth, etc. It can fluidize powdery and granular materials through compressed air, increase the flowability 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 14 is arranged in an L-shaped structure. An observation window 15 is provided in the upper middle part of the outer side wall of the discharge pipe 14, and the observation window 15 is arranged opposite to the feeding end of the discharge pipe 14. A sealing plate made of a transparent material is hermetically arranged on the observation window 15 to facilitate viewing the material discharge situation in the discharge pipe 14.

[0019] The material guiding plate 5 is made of a metal mesh.

[0020] An inspection window 4 is provided on the front wall or the rear wall of the discharge chute 1. A sealing plate is detachably arranged on the inspection window 4, and the two are bolted, or one end of the sealing plate is movably hinged to the inspection window 4; when the two are movably hinged, the other end of the sealing plate is provided with a buckle to connect the inspection window 4, and a sealing rubber ring is arranged on the edge of the sealing plate or the inspection window 4 to prevent material leakage.

[0021] The discharge chute 1 is arranged in an L-shaped structure, and the included angle β of the discharge chute 1 is an obtuse angle. Specifically, the bottom of the discharge chute 1, that is, the bottom surface of the discharge chute 1, is arranged in an inclined shape to facilitate discharging.

[0022] The discharge pipe 14 is arranged in an L-shaped structure, and the bottom surface of the discharge pipe 14 is arranged in an inclined shape to facilitate discharging.

[0023] The flow control valve 9 includes a valve pipe 10, a valve disc 11, a valve rod 12, and an operation part 13. The valve disc 11 is arranged in the valve pipe 10 through the valve rod 12, and the valve rod 12 is perpendicular to the axis of the valve pipe 10. A bearing adapted to the valve rod 12 is provided on the pipe wall of the valve pipe 10. Any end of the valve rod 12 passes through the pipe wall of the valve pipe 10 to connect the operation part 13, and the operation part 13 controls the valve rod 12 to drive the valve disc 11 to rotate to realize the opening and closing of the valve pipe 10.

[0024] The valve disc 11 is arranged in a semi-cylindrical structure. To ensure the normal operation of the valve disc 11, the valve pipe 10 is of a square structure, that is, its cross-section is of a square structure.

[0025] Further, the valve disc 11 is arranged in a hemispherical structure. To ensure the normal operation of the valve disc 11, the valve pipe 10 is of a cylindrical structure, that is, its cross-section is of a circular structure.

[0026] The interior of the valve pipe 10 is arranged in a horn-shaped structure, and its large-mouth end is connected to the discharge pipe 14.

[0027] The operation part 13 is an operation handle or a motor, which realizes manual control or automatic control to adjust the discharge amount of small-particle-size materials; when the operation part 13 is an operation handle, a nut threadedly matched with the operation handle is arranged on the outer wall of the valve pipe 10. By rotating the operation handle in the nut, the opening degree of the valve piece 11 is adjusted, and the posture of the valve piece 11 is fixed to avoid random rotation.

[0028] The discharge chute 1 and the flow control valve 9 are connected by a flange, and the bottom of the discharge end of the discharge chute 1, that is, the bottom of the discharge bin 2, is flush with the bottom of the connected flange to ensure that the materials can be discharged from the discharge chute 1 and avoid interference and blockage. The flow control valve 9 and the discharge pipe 14 are connected by a flange.

[0029] Furthermore, in order to facilitate installation and use, a lifting lug is fixedly installed on the discharge chute 1.

[0030] The working mode of the utility model: After small-particle-size materials such as cement, mineral powder, fly ash, and limestone powder enter the discharge chute 1, they will directly fall onto the guide diaphragm 7 of the guide plate 5, and then slide downward along the guide diaphragm 7. After the discharge amount is adjusted and controlled by the flow control valve 9, they are discharged from the discharge pipe 14. During the above discharge process, compressed air is conveyed into the feeding control bin 3 from the air inlet 8. The compressed air passes through the air permeable holes 6 on the guide plate 5 to contact the guide diaphragm 7, and will penetrate from the guide diaphragm 7 and mix into the small-particle-size materials, thereby increasing the fluidity of the small-particle-size materials. At the same time, under the action of the self-gravity of the small-particle-size materials and the guidance of the guide plate 7, the fluidity of the compressed air is used to provide a thrust to the small-particle-size materials, so that the small-particle-size materials and the compressed air flow toward the flow control valve 9. At this time, the flow control valve 9 is opened to naturally discharge the small-particle-size materials, and only compressed air needs to be conveyed throughout the process of discharging the small-particle-size materials, which can ensure the smooth discharge of the small-particle-size materials and solve the problems of unstable discharge and easy blockage; and the faults occurring in the discharge chute 1 can be repaired and maintained through each inspection window 4.

Claims

1. A unidirectional discharge control device for small-particle-size materials, comprising a discharge chute (1), a flow control valve (9), and a discharge pipe (14), which are connected in sequence as a whole, and is characterized in that: The top of the discharge chute (1) is provided with an open structure for receiving materials. A flow control valve (9) and a discharge pipe (14) are sequentially connected to any end wall of the discharge chute (1). A feeding mechanism is arranged in the middle and lower part of the discharge chute (1). The feeding mechanism includes a guide plate (5), a guide diaphragm (7), and an air inlet (8). The guide plate (5) is arranged in the middle and lower part of the discharge chute (1), 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 (9). The guide plate (5) is provided with ventilation holes (6). The guide diaphragm (7) covers the top of the guide plate (5). At least one air inlet (8) is arranged at the bottom of the feeding control bin (3).

2. The unidirectional discharge control device for small-particle materials according to claim 1, wherein: The ventilation holes (6) are all arranged on the guide plate (5).

3. The one-way discharge control device for small-particle materials according to claim 1, characterized in that: The material of the guide diaphragm (7) is a breathable material.

4. The small-particle-size material unidirectional discharge control device according to claim 1 or 3, characterized in that: The guide diaphragm (7) is a gasification cloth.

5. The one-way discharge control device for small particle size materials according to claim 1, characterized in that: The discharge pipe (14) is arranged in an L-shaped structure. An observation window (15) is arranged in the upper middle part of the outer side wall of the discharge pipe (14), and the observation window (15) is arranged opposite to the feeding end of the discharge pipe (14).

6. The unidirectional discharge control device for small-particle materials according to claim 1, wherein: The discharge chute (1) is arranged in an L-shaped structure, and the included angle β of the discharge chute (1) is an obtuse angle.

7. The unidirectional discharge control device for small-particle materials according to claim 1, wherein: The flow control valve (9) includes a valve pipe (10), a valve plate (11), a valve rod (12), and an operation part (13). The valve plate (11) is arranged in the valve pipe (10) through the valve rod (12), and the valve rod (12) is perpendicular to the axis of the valve pipe (10). A bearing adapted to the valve rod (12) is arranged on the pipe wall of the valve pipe (10). Any end of the valve rod (12) passes through the pipe wall of the valve pipe (10) and is connected to the operation part (13). The operation part (13) controls the valve rod (12) to drive the valve plate (11) to rotate, realizing the opening and closing of the valve pipe (10).

8. The small-particle-size material unidirectional discharge control device according to claim 7, characterized in that: The valve plate (11) is arranged in a semi-cylindrical or hemispherical structure.

9. The unidirectional discharge control device for small-sized materials according to claim 7, characterized in that: The inside of the valve pipe (10) is arranged in a flared structure, and its large-mouth end is connected to the discharge pipe (14).

10. The small-particle-size material unidirectional discharge control device according to claim 7, wherein: The operation part (13) is an operation handle or a motor.

Images