Powder selecting device for power plant

Abstract

The invention discloses a powder selecting device for a power plant, and relates to the field of powder selecting devices, the powder selecting device comprises a main separating cylinder and a plurality of auxiliary separating cylinders, a communicating sleeve is mounted on the main separating cylinder, the plurality of auxiliary separating cylinders are all connected to the communicating sleeve, and air pipes are connected to the two auxiliary separating cylinders located on the same side. It needs to be explained that in the embodiment of the invention, when the coal ash is selected, the coal ash is effectively scattered through throwing and heating, and the coal ash is prevented from being affected with damp, agglomerated and adhered to the interior of the main separation barrel; through intermittent discharging, the coal ash can be dredged, and the problem that the bottom coal ash is too large in pressure intensity and blocks cannot be discharged is solved; besides, if the humidity of the coal ash is high and the heating wire cannot dry the coal ash in time, the adapter barrel can be closed in time, the problem that much humid coal ash enters the main separation barrel to cause blockage in the main separation barrel is avoided, meanwhile, workers can conveniently handle the coal ash in time, and therefore loss can be effectively avoided for a power plant.

Description

Technical Field

[0001] The present invention relates to the technical field of powder selection devices, and in particular to a powder selection device for power plants. Background Art

[0002] Fly ash is the fine ash captured from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. The main oxide components of fly ash from thermal power plants in China are: SiO 2 , Al 2 O 3 , FeO, Fe 2 O 3 , CaO, TiO 2 etc. With the development of the power industry, the discharge of fly ash from coal-fired power plants has been increasing year by year, becoming one of the industrial waste residues with a large discharge in China at present. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere. If it is discharged into the water system, it will cause river siltation, and the toxic chemical substances in it will also harm humans and organisms. However, fly ash can be recycled, such as being used as a admixture in concrete, etc. Therefore, for environmental protection considerations, power plants need to carry out powder selection treatment on fly ash through a powder separator to facilitate subsequent utilization.

[0003] It should be noted that when the powder separator selects powder, through the setting of multiple separation cylinders and by rotating, fly ash of different sizes is screened. However, fly ash is the waste discharged from power plants, so when it is stacked, it is easily affected by the environment, making the fly ash unable to always remain dry. Even when stacked, the fly ash cakes or becomes viscous due to water ingress or moisture absorption. When this moisture-absorbed or water-entered fly ash enters the separation cylinder, it is extremely easy to adhere to the inside of the separation cylinder and cannot be separated by rotation, resulting in continuous adhesion of fly ash inside the separation cylinder, which not only easily causes blockage of the separation cylinder, but even causes the motor on the separation cylinder to be overloaded, and then causes problems of equipment damage, thus causing significant economic losses to the power plant. Summary of the Invention

[0004] The purpose of the present invention is to provide a powder selection device for power plants to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A powder separator for a power plant, which includes a main separation cylinder and a plurality of auxiliary separation cylinders. A connecting sleeve is installed on the main separation cylinder, and a plurality of the auxiliary separation cylinders are all connected to the connecting sleeve. An air duct is connected between two of the auxiliary separation cylinders on the same side. A power shaft is rotatably installed on the top side of the main separation cylinder. A wedge-shaped column is installed at the top end of the power shaft. A motor is installed on the top side of the main separation cylinder. Belt pulleys are installed on the output shaft of the motor and the power shaft respectively, and the two belt pulleys are sleeved with a belt. A feed cylinder is also installed on the top side of the main separation cylinder; It further includes an active dispersing device, which is installed between the main separation cylinder and the feed cylinder, and is used for dispersing and separating coal ash raw materials; the active dispersing device includes a transfer cylinder, the top side of the transfer cylinder is installed on the bottom side of the feed cylinder, the bottom side of the transfer cylinder is installed on the main separation cylinder, a sprinkling plate is movably installed in the transfer cylinder, a plurality of discharge holes are opened on the sprinkling plate, and heating wires are installed in the sprinkling plate; It further includes a feed dredging mechanism, which is installed in the transfer cylinder and is used for dredging the coal ash raw materials in the feed cylinder; the feed dredging mechanism includes two blocking plates, both of the blocking plates are installed in the transfer cylinder, a discharge plate rotatably installed in the transfer cylinder is arranged between the two blocking plates, the discharge plate is used for closing the outlet between the two blocking plates, a plurality of mounting columns are installed on the top side of the discharge plate, and a plurality of dredging rods are installed on the mounting columns; It further includes an attachment and closing mechanism, which is installed in the transfer cylinder and is used for closing the transfer cylinder.

[0006] Further, in a preferred embodiment of the present invention, the active dispersing device further includes a lifting plate. A lifting groove is opened on one side of the transfer cylinder, and a lifting plate is movably installed in the lifting groove; Sliding grooves are opened on the inner walls around the lifting groove, and the lifting plate is slidably installed in the sliding grooves.

[0007] Further, in a preferred embodiment of the present invention, an installation hole is opened on the lifting plate, and a driving frame is installed in the installation hole. The driving frame is installed on the sprinkling plate; A return spring is installed on the top side of the driving frame, and the top end of the return spring is installed on the top inner wall of the lifting groove.

[0008] Further, in a preferred embodiment of the present invention, a driving groove is opened on the inclined top side of the wedge-shaped column. A driving rod is installed on the bottom side of the driving frame, and the bottom end of the driving rod extends into the driving groove. The bottom end of the driving rod and the driving groove are both arc-shaped.

[0009] Further, in a preferred embodiment of the present invention, the feeding dredging mechanism further includes a telescopic rod. A telescopic sliding hole is formed in the inner wall of the adapter cylinder, and the telescopic rod is movably installed in the telescopic sliding hole; The telescopic rod is in contact with the bottom side of the discharge plate, and a U-shaped pressing frame is installed at the other end of the telescopic rod.

[0010] Further, in a preferred embodiment of the present invention, a return spring is sleeved on the telescopic rod. Two ends of the return spring are respectively installed on the adapter cylinder and the U-shaped pressing frame, and the return spring drives the U-shaped pressing frame to reset; A driven shaft is installed on the top side of the wedge-shaped column, and an eccentric disc is installed at the top end of the driven shaft. The eccentric disc rotates to squeeze the U-shaped pressing frame.

[0011] Further, in a preferred embodiment of the present invention, annular grooves are formed in a plurality of the discharge plates, and a connecting shaft is installed on the inner wall of the adapter cylinder. The connecting shaft passes through the annular groove; A torsion spring is sleeved on the connecting shaft. One end of the torsion spring is installed on the inner wall of the annular groove, and the other end of the torsion spring is installed on the connecting shaft.

[0012] Further, in a preferred embodiment of the present invention, the attachment and closing mechanism includes a pull-down plate. The pull-down plate is movably installed on the bottom side of the adapter cylinder. Two closing plates are rotatably installed in the adapter cylinder. Pulling rods are rotatably installed on both of the two closing plates, and both of the pulling rods are movably installed on the pull-down plate; Two pulling seats are rotatably installed on the pulling rod. The two pulling seats are respectively installed on the pull-down plate and the closing plate; Two pulling shafts are rotatably installed on the pulling rod. The two pulling shafts are respectively installed on the two pulling seats.

[0013] Further, in a preferred embodiment of the present invention, two pull-down grooves are formed in the bottom side of the adapter cylinder, and pull-down rods are movably installed in both of the two pull-down grooves; Connecting seats are installed on both sides of the pull-down plate. The two pull-down rods are respectively installed on the two connecting seats, and the pull-down plate vertically slides in the two pull-down grooves through the two pull-down rods.

[0014] Further, in a preferred embodiment of the present invention, a pull-down spring is installed on the inner wall of the top side of the pull-down groove. The bottom end of the pull-down spring is installed on the top end of the pull-down rod; A heating plate is installed on the top side of the pull-down plate, and the heating plate is conically arranged.

[0015] The beneficial effects of a powder separator device for a power plant proposed by the present invention are: In the present invention, through the setting of the active dispersion device, when separating fly ash, the power shaft rotates to drive the wedge-shaped column to rotate. When the wedge-shaped column rotates one week, the driving frame drives the sprinkling plate to move up and down once, so that the sprinkling plate sprinkles the coal ash and heats the coal ash through the heating wire at the same time, effectively dispersing the coal ash, avoiding the problem that the coal ash gets damp and caked and adheres to the main separation cylinder, causing blockage of the main separation cylinder. At the same time, the dispersed coal ash can leak out through the discharge hole.

[0016] Furthermore, in the present invention, through the setting of the feeding dredging mechanism, when the wedge-shaped column rotates, it drives the driven shaft to drive the eccentric disk to rotate. By the extrusion of the eccentric disk against the contact with the U-shaped pressing frame, the discharge plate is automatically opened and closed. During the rotation of the discharge plate, the installation column drives a plurality of dredging rods to move, so that the coal ash in the feeding cylinder is taken out. It can not only achieve the purpose of intermittent discharging, but also dredge the coal ash, avoiding the problem that the coal ash cannot be dried and dispersed in time due to too fast feeding, or the problem that too much coal ash accumulates in the feeding cylinder, resulting in too large pressure at the bottom of the coal ash and caking and unable to discharge.

[0017] Even further, in the present invention, through the setting of the attachment and sealing mechanism, if the humidity of the coal ash is high and the heating wire cannot dry the coal ash in time, the wet coal ash falls on the lower pull plate, and the heating plate further dries the coal ash. If the coal ash is even wetter and cannot be dried in time and adheres to the lower pull plate, the lower pull plate is forced to move down. The movement of the lower pull plate drives the two connecting seats to move, the movement of the connecting seats drives the lower pull rod to move, the lower pull rod moves in the lower pull groove and pulls the lower pull spring to be stretched. At the same time, the movement of the lower pull plate drives the two pulling seats to move, the movement of the pulling seats drives the pulling rod to move through the pulling shaft, and the pulling rod drives another pulling seat to move through another pulling shaft, so that the pulling seat drives the closing plate to rotate, and the two closing plates rotate to seal the transfer cylinder, avoiding the problem that too much wet coal ash enters the main separation cylinder and causes blockage inside the main separation cylinder, and facilitating the timely handling by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a powder selection device for a power plant provided by an embodiment of the present invention; Figure 2 is a top-view structural schematic diagram of a powder selection device for a power plant provided by an embodiment of the present invention; Figure 3 is a bottom-view structural schematic diagram of the connection between the feeding cylinder and the active dispersion device and other structures of a powder selection device for a power plant provided by an embodiment of the present invention; Figure 4 is a structural schematic diagram of the connection between the feeding cylinder and the active dispersion device and other structures of a powder selection device for a power plant provided by an embodiment of the present invention; Figure 5 A sectional structure diagram showing the connection between a transfer cylinder and a sprinkling plate and other structures of a powder separator for a power plant provided by an embodiment of the present invention; Figure 6 A powder separator for a power plant provided by an embodiment of the present invention Figure 5 A structural diagram of the flipping frame of part A therein; Figure 7 A structural diagram showing the connection between a U-shaped top pressure frame and an eccentric disc and other structures of a powder separator for a power plant provided by an embodiment of the present invention; Figure 8 A partial fracture sectional structure diagram showing the connection between a discharge plate and a connecting shaft and other structures of a powder separator for a power plant provided by an embodiment of the present invention; Figure 9 A partial sectional structure diagram showing the connection between a transfer cylinder and a lower pull plate and other structures of a powder separator for a power plant provided by an embodiment of the present invention; Figure 10 A fracture structural diagram showing the connection between a pull rod and a pull seat of a powder separator for a power plant provided by an embodiment of the present invention.

[0019] In the figure: 1 - main separation cylinder; 2 - auxiliary separation cylinder; 3 - communication sleeve; 4 - air duct; 5 - feed cylinder; 6 - power shaft; 7 - active dispersing device; 701 - transfer cylinder; 702 - sprinkling plate; 703 - lifting plate; 704 - lifting groove; 705 - driving frame; 706 - return spring; 707 - driving rod; 708 - driving groove; 709 - mounting hole; 710 - heating wire; 711 - discharge hole; 712 - sliding groove; 8 - feed dredging mechanism; 801 - blocking plate; 802 - discharge plate; 803 - mounting column; 804 - dredging rod; 805 - annular groove; 806 - connecting shaft; 807 - torsion spring; 808 - telescopic rod; 809 - U-shaped top pressure frame; 810 - return spring; 811 - driven shaft; 812 - eccentric disc; 813 - telescopic sliding hole; 9 - adhesion closing mechanism; 901 - lower pull plate; 902 - connecting seat; 903 - lower pull rod; 904 - lower pull groove; 905 - lower pull spring; 906 - closing plate; 907 - pull rod; 908 - pull seat; 909 - pull shaft; 910 - heating plate; 10 - motor; 11 - pulley; 12 - belt; 13 - wedge-shaped column. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a variety of different configurations.

[0021] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

[0023] In addition, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "perpendicular", etc. do not mean that the components are required to be absolutely vertical, but can be slightly inclined. For example, "vertical" only means that its direction is more vertical relative to "horizontal", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0025] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Please refer to the accompanying specification Figures 1-10, a powder selecting device for a power plant provided by an embodiment of the present invention includes a main separation cylinder 1 and a plurality of auxiliary separation cylinders 2. A connecting sleeve 3 is installed on the main separation cylinder 1, and the plurality of auxiliary separation cylinders 2 are all connected to the connecting sleeve 3. An air duct 4 is connected between two auxiliary separation cylinders 2 on the same side. A power shaft 6 is rotatably installed on the top side of the main separation cylinder 1. A wedge-shaped column 13 is installed at the top end of the power shaft 6. A motor 10 is installed on the top side of the main separation cylinder 1. Belt pulleys 11 are installed on the output shaft of the motor 10 and the power shaft 6 respectively, and the two belt pulleys 11 are sleeved with a belt 12. A feed cylinder 5 is also installed on the top side of the main separation cylinder 1.

[0027] Further, a powder selecting device for a power plant provided by an embodiment of the present invention further includes an active dispersion device 7. The active dispersion device 7 is installed between the main separation cylinder 1 and the feed cylinder 5 and is used for dispersing and separating the coal ash raw material. Specifically, the active dispersion device 7 includes a transfer cylinder 701. The top side of the transfer cylinder 701 is installed on the bottom side of the feed cylinder 5, and the bottom side of the transfer cylinder 701 is installed on the main separation cylinder 1. A sprinkling plate 702 is movably installed in the transfer cylinder 701. A plurality of discharge holes 711 are formed in the sprinkling plate 702, and a heating wire 710 is installed in the sprinkling plate 702. And it further includes a feed dredging mechanism 8. The feed dredging mechanism 8 is installed in the transfer cylinder 701 and is used for dredging the coal ash raw material in the feed cylinder 5. Specifically, the feed dredging mechanism 8 includes two blanking plates 801. The two blanking plates 801 are both installed in the transfer cylinder 701. An outlet plate 802 rotatably installed in the transfer cylinder 701 is arranged between the two blanking plates 801. The outlet plate 802 is used for closing the outlet between the two blanking plates 801. A plurality of mounting columns 803 are installed on the top side of the outlet plate 802, and a plurality of dredging rods 804 are installed on the mounting columns 803.

[0028] It should be noted that in the embodiment of the present invention, through the setting of the active dispersion device 7, when separating the fly ash, the motor 10 starts to drive a pulley 11 to rotate. The pulley 11 drives another pulley 11 to rotate through the belt 12, and then drives the power shaft 6 to rotate. The rotation of the power shaft 6 drives the wedge-shaped column 13 to rotate. The rotation of the wedge-shaped column 13 drives the driving rod 707 to move upward through the driving groove 708. The movement of the driving rod 707 drives the driving frame 705 to move upward. The upward movement of the driving frame 705 drives the lifting plate 703 to move. The lifting plate 703 slides in the sliding groove 712 and squeezes the return spring 706 to contract. Moreover, during the movement of the lifting plate 703, the lifting groove 704 is always closed to prevent the leakage of coal ash. In addition, the movement of the driving frame 705 drives the sprinkling plate 702 to move. During the continuous rotation of the wedge-shaped column 13, under the tensile force of the return spring 706, the driving frame 705 moves downward to reset. When the lowest point of the wedge-shaped column 13 contacts the driving rod 707, the driving frame 705 is reset. Thus, when the wedge-shaped column 13 rotates one week, the driving frame 705 drives the sprinkling plate 702 to move up and down once, so that the sprinkling plate 702 sprinkles the coal ash and heats the coal ash through the heating wire 710 at the same time, so that the coal ash is effectively dispersed, avoiding the problem that the coal ash is affected by moisture and caked and adheres to the main separation cylinder 1, causing the blockage of the main separation cylinder 1. At the same time, the dispersed coal ash can leak out through the discharge hole 711. Furthermore, it should be noted that through the setting of the feeding dredging mechanism 8, when the wedge-shaped column 13 rotates, it drives the driven shaft 811 to drive the eccentric disc 812 to rotate. The narrow side of the eccentric disc 812 contacts the U-shaped pressing frame 809 and squeezes the U-shaped pressing frame 809 to move. The movement of the U-shaped pressing frame 809 drives the telescopic rod 808 to move and drives the return spring 810 to contract. The movement of the telescopic rod 808 squeezes the discharge plate 802 to rotate, so that the discharge plate 802 closes the outlet between the two blanking plates 801. In addition, when the discharge plate 802 rotates, it rotates on the connecting shaft 806 through the annular groove 805 and drives the torsion spring 807 to be stressed. Therefore, during the continuous rotation of the wedge-shaped column 13 driving the eccentric disc 812, the wide side of the eccentric disc 812 contacts the U-shaped pressing frame 809. At this time, under the resilience of the return spring 810, the U-shaped pressing frame 809 is reset, so that the telescopic rod 808 is separated from the discharge plate 802. Then, under the resilience of the torsion spring 807, the discharge plate 802 is driven to rotate and open. During the rotation of the discharge plate 802, the mounting column 803 drives a plurality of dredging rods 804 to move, so that the coal ash in the feeding cylinder 5 is taken out, which can not only achieve the purpose of intermittent discharging, but also dredge the coal ash, avoiding the problem that the coal ash cannot be dried and dispersed in time due to too fast feeding, or the problem that the pressure of the coal ash at the bottom is too large and caked and cannot be discharged due to too much coal ash accumulated in the feeding cylinder 5.

[0029] Furthermore, a powder separator for a power plant provided by an embodiment of the present invention further includes an attachment and sealing mechanism 9. The attachment and sealing mechanism 9 is installed in the transfer cylinder 701 and is used to seal the transfer cylinder 701. Specifically, the attachment and sealing mechanism 9 includes a lower pull plate 901. The lower pull plate 901 is movably installed on the bottom side of the transfer cylinder 701. Two sealing plates 906 are rotatably installed in the transfer cylinder 701. Pulling rods 907 are rotatably installed on both of the two sealing plates 906. The two pulling rods 907 are both movably installed on the lower pull plate 901.

[0030] It should be noted that in the embodiment of the present invention, through the setting of the attachment and sealing mechanism 9, if the humidity of the coal ash is high and the heating wire 710 cannot dry the coal ash in time, the wet coal ash falls on the lower pull plate 901, and the coal ash is further dried by the heating plate 910. If the coal ash is even wetter and cannot be dried in time and adheres to the lower pull plate 901, the lower pull plate 901 is forced to move downward. The movement of the lower pull plate 901 drives the movement of the two connecting seats 902. The movement of the connecting seats 902 drives the movement of the lower pull rod 903. The lower pull rod 903 moves in the lower pull groove 904 and pulls the lower pull spring 905 to be stretched. At the same time, the movement of the lower pull plate 901 drives the movement of the two pulling seats 908. The movement of the pulling seats 908 drives the pulling rods 907 to move through the pulling shafts 909. The pulling rods 907 drive the movement of the other pulling seats 908 through the other pulling shafts 909, so that the pulling seats 908 drive the sealing plates 906 to rotate, and the two sealing plates 906 rotate to seal the transfer cylinder 701, avoiding the problem that a large amount of wet coal ash enters the main separation cylinder 1 and causes blockage in the main separation cylinder 1, and it is also convenient for the staff to handle in time.

[0031] Furthermore, please refer to the accompanying Figures 4-6 drawings of the specification. A powder separator for a power plant provided by an embodiment of the present invention. The active dispersion device 7 further includes a lifting plate 703. A lifting groove 704 is opened on one side of the transfer cylinder 701. The lifting plate 703 is movably installed in the lifting groove 704. In addition, sliding grooves 712 are opened on the inner walls around the lifting groove 704. The lifting plate 703 is slidably installed in the sliding grooves 712. It should be noted that in the embodiment of the present invention, when the lifting plate 703 moves, it vertically slides in the sliding grooves 712 and squeezes the return spring 706 to contract. During the movement of the lifting plate 703, the lifting groove 704 is always sealed to avoid the leakage of coal ash.

[0032] Further specifically, in the embodiment of the present invention, an installation hole 709 is formed in the lifting plate 703, and a driving frame 705 is installed in the installation hole 709. The driving frame 705 is installed on the spreading plate 702. In addition, a return spring 706 is installed on the top side of the driving frame 705, and the top end of the return spring 706 is installed on the inner wall of the top side of the lifting groove 704. It should be noted that in the embodiment of the present invention, when separating the pulverized coal ash, the motor 10 is started to drive a pulley 11 to rotate. The pulley 11 drives another pulley 11 to rotate through a belt 12, and then drives the power shaft 6 to rotate. The rotation of the power shaft 6 drives the wedge-shaped column 13 to rotate. The rotation of the wedge-shaped column 13 drives the driving rod 707 to move upward through the driving groove 708. The movement of the driving rod 707 drives the driving frame 705 to move upward. The upward movement of the driving frame 705 drives the lifting plate 703 to move, and at the same time, the movement of the driving frame 705 drives the spreading plate 702 to move. Therefore, during the continuous rotation of the wedge-shaped column 13, under the pulling force of the return spring 706, the driving frame 705 is driven to move downward and reset. When the lowest point of the wedge-shaped column 13 contacts the driving rod 707, the driving frame 705 is reset. Thus, when the wedge-shaped column 13 rotates one week, the driving frame 705 drives the spreading plate 702 to move up and down once, so that the spreading plate 702 spreads the coal ash, and the coal ash is heated by the heating wire 710, so that the coal ash is effectively dispersed, avoiding the problem that the coal ash is affected by moisture and caked and adheres to the main separation cylinder 1, causing the blockage of the main separation cylinder 1. At the same time, the dispersed coal ash can leak out through the discharge hole 711.

[0033] Please continue to refer to the accompanying drawings of the specification Figures 4-6 Furthermore specifically, in the embodiment of the present invention, a driving groove 708 is formed on the inclined top side of the wedge-shaped column 13. A driving rod 707 is installed on the bottom side of the driving frame 705. The bottom end of the driving rod 707 extends into the driving groove 708, and both the bottom end of the driving rod 707 and the driving groove 708 are arc-shaped. It should be noted that in the embodiment of the present invention, the rotation of the wedge-shaped column 13 drives the driving rod 707 to move upward through the driving groove 708, and the movement of the driving rod 707 drives the driving frame 705 to move upward.

[0034] Further, please refer to the accompanying drawings of the specification Figure 5 and Figures 7-8 In addition, the feeding dredging mechanism 8 of the powder selection device for a power plant provided by the embodiment of the present invention further includes a telescopic rod 808. A telescopic sliding hole 813 is formed on the inner wall of the adapter cylinder 701. The telescopic rod 808 is movably installed in the telescopic sliding hole 813. In addition, the telescopic rod 808 is in contact with the bottom side of the discharge plate 802, and a U-shaped pressing frame 809 is installed at the other end of the telescopic rod 808.

[0035] It should be noted that in the embodiments of the present invention, when the wedge-shaped column 13 rotates, it drives the driven shaft 811 to drive the eccentric disc 812 to rotate. The narrow side of the eccentric disc 812 contacts the U-shaped pressing frame 809 and squeezes the U-shaped pressing frame 809 to move. The movement of the U-shaped pressing frame 809 drives the telescopic rod 808 to move and drives the return spring 810 to contract. The telescopic rod 808 moves to squeeze the discharge plate 802 to rotate, so that the discharge plate 802 closes the outlet between the two blanking plates 801. In addition, when the discharge plate 802 rotates, it rotates on the connecting shaft 806 through the annular groove 805 and drives the torsion spring 807 to be stressed. Therefore, during the continuous rotation of the eccentric disc 812 driven by the wedge-shaped column 13, the wide side of the eccentric disc 812 contacts the U-shaped pressing frame 809. At this time, under the resilience of the return spring 810, it drives the U-shaped pressing frame 809 to reset, so that the telescopic rod 808 disengages from the discharge plate 802. At this time, under the resilience of the torsion spring 807, it drives the discharge plate 802 to rotate and open. During the rotation of the discharge plate 802, it drives a plurality of dredging rods 804 to move through the mounting posts 803, so that the coal ash in the feed cylinder 5 is carried out. It can not only achieve the purpose of intermittent discharging, but also dredge the coal ash, avoiding the problems that the coal ash cannot be dried and dispersed in time due to too fast feeding, or the problem that the bottom coal ash pressure is too large and caked and cannot be discharged due to too much coal ash accumulated in the feed cylinder 5.

[0036] More specifically, in the embodiments of the present invention, a return spring 810 is sleeved on the telescopic rod 808. The two ends of the return spring 810 are respectively installed on the adapter cylinder 701 and the U-shaped pressing frame 809. The return spring 810 drives the U-shaped pressing frame 809 to reset. In addition, a driven shaft 811 is installed on the top side of the wedge-shaped column 13, and an eccentric disc 812 is installed at the top end of the driven shaft 811. The rotation of the eccentric disc 812 is used to squeeze the U-shaped pressing frame 809. It should be noted that in the embodiments of the present invention, when the wedge-shaped column 13 rotates, it drives the driven shaft 811 to drive the eccentric disc 812 to rotate, and the eccentric disc 812 squeezes the U-shaped pressing frame 809 to move.

[0037] Please continue to refer to the accompanying drawings of the specification Figure 5 and Figures 7-8, more specifically, in the embodiments of the present invention, annular grooves 805 are formed in a plurality of discharge plates 802, a connecting shaft 806 is installed on the inner wall of the transfer cylinder 701, and the connecting shaft 806 passes through the annular groove 805; in addition, a torsion spring 807 is sleeved on the connecting shaft 806, one end of the torsion spring 807 is installed on the inner wall of the annular groove 805, and the other end of the torsion spring 807 is installed on the connecting shaft 806. It should be noted that in the embodiments of the present invention, when the telescopic rod 808 is squeezed and moved, the discharge plate 802 is rotated, so that the discharge plate 802 closes the outlet between the two blanking plates 801. At the same time, when the discharge plate 802 rotates, it rotates on the connecting shaft 806 through the annular groove 805 and drives the torsion spring 807 to be stressed. Therefore, when the telescopic rod 808 resets, under the resilience of the torsion spring 807, the discharge plate 802 is driven to rotate and open, realizing the intermittent opening of the discharge plate 802, and further realizing the function of intermittent feeding.

[0038] Further, please refer to the accompanying drawings of the specification Figures 9-10 , a powder separator for a power plant provided by an embodiment of the present invention, two pulling seats 908 are rotatably installed on the pulling rod 907, and the two pulling seats 908 are respectively installed on the lower pull plate 901 and the closing plate 906; In addition, two pulling shafts 909 are rotatably installed on the pulling rod 907, and the two pulling shafts 909 are respectively installed on the two pulling seats 908. It should be noted that in the embodiments of the present invention, the movement of the lower pull plate 901 drives the two pulling seats 908 to move, the movement of the pulling seat 908 pulls the pulling rod 907 to move through the pulling shaft 909, and the pulling rod 907 drives the other pulling seat 908 to move through the other pulling shaft 909, so that the pulling seat 908 drives the closing plate 906 to rotate, and the two closing plates 906 rotate to close the transfer cylinder 701.

[0039] Further specifically, in the embodiment of the present invention, two downward pull grooves 904 are formed in the bottom side of the adapter cylinder 701, and downward pull rods 903 are movably installed in both of the two downward pull grooves 904; in addition, connection seats 902 are installed on both sides of the downward pull plate 901, the two downward pull rods 903 are respectively installed on the two connection seats 902, and the downward pull plate 901 vertically slides in the two downward pull grooves 904 through the two downward pull rods 903. It should be noted that in the embodiment of the present invention, if the humidity of the coal ash is high and the heating wire 710 cannot dry the coal ash in time, the wet coal ash falls on the downward pull plate 901, and the coal ash is further dried by the heating plate 910; if the coal ash is even wetter and cannot be dried in time and adheres to the downward pull plate 901, the downward pull plate 901 is forced to move downward, and at the same time, the downward pull plate 901 moves to drive the pull rod 907 to move, and the pull rod 907 drives the closing plate 906 to rotate, and the two closing plates 906 rotate to close the adapter cylinder 701, avoiding the problem that a large amount of wet coal ash enters the main separation cylinder 1 and causes blockage in the main separation cylinder 1, and it is also convenient for the staff to handle in time.

[0040] Please continue to refer to the accompanying Figures 9-10 drawing. Even more specifically, in the embodiment of the present invention, a downward pull spring 905 is installed on the top inner wall of the downward pull groove 904, and the bottom end of the downward pull spring 905 is installed on the top end of the downward pull rod 903; in addition, a heating plate 910 is installed on the top side of the downward pull plate 901, and the heating plate 910 is conically arranged. It should be noted that in the embodiment of the present invention, the movement of the downward pull plate 901 drives the movement of the two connection seats 902, the movement of the connection seats 902 drives the movement of the downward pull rods 903, the downward pull rods 903 move in the downward pull grooves 904, and the downward pull springs 905 are pulled and stretched.

[0041] In summary, the working principle of a powder selecting device for a power plant provided by the embodiment of the present invention is as follows: When beneficiating fly ash, the motor 10 starts to drive a pulley 11 to rotate. The pulley 11 drives another pulley 11 to rotate through a belt 12, and then drives the power shaft 6 to rotate. The rotation of the power shaft 6 drives the wedge-shaped column 13 to rotate. The rotation of the wedge-shaped column 13 drives the driving rod 707 to move upward through the driving groove 708. The movement of the driving rod 707 drives the driving frame 705 to move upward. The upward movement of the driving frame 705 drives the lifting plate 703 to move. The lifting plate 703 slides in the sliding groove 712 and squeezes the return spring 706 to contract. Therefore, during the movement of the lifting plate 703, the lifting groove 704 is always closed to prevent the leakage of coal ash. In addition, the movement of the driving frame 705 drives the sprinkling plate 702 to move. Therefore, during the continuous rotation of the wedge-shaped column 13, under the tensile force of the return spring 706, the driving frame 705 is driven to move downward and reset. When the lowest point of the wedge-shaped column 13 contacts the driving rod 707, the driving frame 705 is reset. Thus, when the wedge-shaped column 13 rotates one week, the purpose of driving the driving frame 705 to drive the sprinkling plate 702 to move up and down once is achieved, so that the sprinkling plate 702 sprinkles the coal ash, and the coal ash is heated by the heating wire 710, so that the coal ash is effectively dispersed, avoiding the problem that the coal ash is affected by moisture and caked and adheres to the main separation cylinder 1, causing the blockage of the main separation cylinder 1. At the same time, the dispersed coal ash can leak out through the discharge hole 711; Further, when the wedge-shaped column 13 rotates, it drives the driven shaft 811 to drive the eccentric disc 812 to rotate. The narrow side of the eccentric disc 812 contacts the U-shaped pressing frame 809 and squeezes the U-shaped pressing frame 809 to move. The movement of the U-shaped pressing frame 809 drives the telescopic rod 808 to move and drives the return spring 810 to contract. The movement of the telescopic rod 808 squeezes the discharge plate 802 to rotate, so that the discharge plate 802 closes the outlet between the two blanking plates 801. At the same time, when the discharge plate 802 rotates, it rotates on the connecting shaft 806 through the annular groove 805 and drives the torsion spring 807 to be stressed. During the continuous rotation of the wedge-shaped column 13 driving the eccentric disc 812, the wide side of the eccentric disc 812 contacts the U-shaped pressing frame 809. At this time, under the resilience of the return spring 810, the U-shaped pressing frame 809 is driven to reset, so that the telescopic rod 808 disengages from the discharge plate 802. At this time, under the resilience of the torsion spring 807, the discharge plate 802 is driven to rotate and open; during the rotation of the discharge plate 802, the installation column 803 drives a plurality of dredging rods 804 to move, so that the coal ash in the feed cylinder 5 is taken out, which can not only achieve the purpose of intermittent discharging, but also dredge the coal ash, avoiding the problem that the coal ash cannot be dried and dispersed in time due to too fast feeding, or the problem that the coal ash accumulated in the feed cylinder 5 is too much, resulting in too large bottom coal ash pressure and caking and unable to discharge; Furthermore, if the humidity of the coal ash is high and the heating wire 710 fails to dry the coal ash in time, the wet coal ash falls on the lower pull plate 901, and the heating plate 910 is used to further dry the coal ash; if the coal ash is even wetter and cannot be dried in time and adheres to the lower pull plate 901, the lower pull plate 901 moves downward under the force, and the movement of the lower pull plate 901 drives the movement of the two connecting seats 902. The movement of the connecting seat 902 drives the movement of the lower pull rod 903. The lower pull rod 903 moves in the lower pull groove 904 and pulls the lower pull spring 905 to be stretched under force; in addition, the movement of the lower pull plate 901 drives the movement of the two pull seats 908. The movement of the pull seat 908 pulls the pull rod 907 to move through the pull shaft 909. The pull rod 907 drives the movement of the other pull seat 908 through the other pull shaft 909, so that the pull seat 908 drives the closing plate 906 to rotate, and the two closing plates 906 rotate to close the transfer cylinder 701, preventing more wet coal ash from entering the main separation cylinder 1 and causing blockage problems in the main separation cylinder 1, and at the same time facilitating the timely handling by the staff.

[0042] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A powder selection device for a power plant, characterized in that: It comprises a main separation cylinder and a plurality of auxiliary separation cylinders, wherein a connecting sleeve is installed on the main separation cylinder, and the plurality of auxiliary separation cylinders are connected to the connecting sleeve, and two auxiliary separation cylinders located on the same side are connected to air ducts, and a power shaft is rotatably installed on the top side of the main separation cylinder, and a wedge-shaped column is installed on the top of the power shaft, and a motor is installed on the top side of the main separation cylinder, and pulleys are installed on the output shaft of the motor and the power shaft, and belts are sleeved on the two pulleys, and a feed cylinder is also installed on the top side of the main separation cylinder; It also includes an active dispersing device, which is installed between the main separation cylinder and the feeding cylinder, and is used to disperse and separate the coal ash raw materials; the active dispersing device includes a switching cylinder, the top side of which is installed on the bottom side of the feeding cylinder, and the bottom side of the switching cylinder is installed on the main separation cylinder, and a throwing plate is movably installed in the switching cylinder, and a plurality of discharge holes are opened on the throwing plate, and a heating wire is installed in the throwing plate; It also includes a feed dredging mechanism, which is installed in the adapter tube and is used to dredge the coal ash raw materials in the feed tube; the feed dredging mechanism includes two blocking plates, both of which are installed in the adapter tube, and a discharge plate rotatably installed in the adapter tube is provided between the two blocking plates, and the discharge plate is used to close the outlet between the two blocking plates, and a plurality of mounting columns are installed on the top side of the discharge plate, and a plurality of dredging rods are installed on the mounting columns; It also includes an attachment and sealing mechanism, which is installed in the adapter cylinder and is used to seal the adapter cylinder.

2. A powder selection device for a power plant according to claim 1, characterized in that: The active breaking device also includes a lifting plate, a lifting slot is provided on one side of the adapter tube, and a lifting plate is movably installed in the lifting slot; Sliding grooves are provided on the inner walls around the lifting groove, and the lifting plate is slidably installed in the sliding grooves.

3. A powder selection device for a power plant according to claim 2, characterized in that: The lifting plate is provided with a mounting hole, a driving frame is installed in the mounting hole, and the driving frame is installed on the throwing plate; A return spring is installed on the top side of the driving frame, and the top end of the return spring is installed on the inner wall of the top side of the lifting slot.

4. A powder selection device for a power plant according to claim 3, characterized in that: A driving groove is provided on the inclined top side of the wedge-shaped column, a driving rod is installed on the bottom side of the driving frame, the bottom end of the driving rod extends into the driving groove, and the bottom end of the driving rod and the driving groove are both arc-shaped.

5. The powder selection device for a power plant according to claim 1, characterized in that: The feed dredging mechanism further comprises a telescopic rod, a telescopic sliding hole is provided on the inner wall of the adapter cylinder, and the telescopic rod is movably installed in the telescopic sliding hole; The telescopic rod is in contact with the bottom side of the discharge plate, and a U-shaped top pressing frame is installed at the other end of the telescopic rod.

6. A powder selection device for a power plant according to claim 5, characterized in that: A return spring is sleeved on the telescopic rod, and two ends of the return spring are respectively mounted on the adapter tube and the U-shaped pressing frame, and the return spring drives the U-shaped pressing frame to reset; A driven shaft is installed on the top side of the wedge-shaped column, and an eccentric disk is installed on the top end of the driven shaft. The eccentric disk rotates to squeeze the U-shaped top pressure frame.

7. A powder selection device for a power plant according to claim 6, characterized in that: A plurality of the discharge plates are provided with annular grooves, and a connecting shaft is installed on the inner wall of the adapter cylinder, and the connecting shaft passes through the annular grooves; A torsion spring is sleeved on the connecting shaft, one end of the torsion spring is installed on the inner wall of the annular groove, and the other end of the torsion spring is installed on the connecting shaft.

8. The powder selection device for a power plant according to claim 1, characterized in that: The attachment and sealing mechanism comprises a pull-down plate, which is movably mounted on the bottom side of the adapter tube, and two sealing plates are rotatably mounted in the adapter tube, and pull rods are rotatably mounted on the two sealing plates, and the two pull rods are movably mounted on the pull-down plate; Two pulling seats are rotatably mounted on the pulling rod, and the two pulling seats are respectively mounted on the lower pull plate and the closing plate; Two pulling shafts are rotatably mounted on the pulling rod, and the two pulling shafts are respectively mounted on the two pulling seats.

9. A powder selection device for a power plant according to claim 8, characterized in that: The bottom side of the adapter tube is provided with two pull-down grooves, and a pull-down rod is movably installed in each of the two pull-down grooves; Connecting seats are installed on both sides of the pull-down plate, and the two pull-down rods are respectively installed on the two connecting seats. The pull-down plate slides vertically in the two pull-down grooves through the two pull-down rods.

10. A powder selection device for a power plant according to claim 9, characterized in that: A pull-down spring is installed on the inner wall of the top side of the pull-down groove, and the bottom end of the pull-down spring is installed on the top end of the pull-down rod; A heating plate is installed on the top side of the pull-down plate, and the heating plate is arranged in a cone shape.

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