Novel coal dry-process fluidization sorting machine

Abstract

The utility model relates to a novel coal dry-method fluidization sorting machine. In order to improve the sorting effect, the novel coal dry-process fluidization sorting machine comprises a shell, a vibrating screen plate and an air guide plate, and the horizontal sections of the vibrating screen plate, the air guide plate and the shell are all in a right trapezoid shape. The air guide plate is divided into a first air guide area, a second air guide area, a third air guide area and a fourth air guide area from the rear bottom edge close to the rear side wall of the shell to the front bottom edge close to the front side wall of the shell, each air guide hole is a square hole, an air guide tongue plate is connected to one side of each square hole, the air guide tongue plate of the air guide hole in the first air guide area is perpendicular to the air guide plate, and the air guide tongue plate of the air guide hole in the second air guide area is perpendicular to the air guide plate. The air guide tongue plates in the second air guide area, the third air guide area and the fourth air guide area all point to the end, away from the air inlet, of the discharging port and can guide airflow blown from the air distribution chamber below the air guide tongue plates to the end, away from the air inlet, of the discharging port. The utility model has the advantages of simple structure and high separation effect, and is suitable for coal preparation plants in drought areas with less water.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel coal dry method fluidization sorting machine. BACKGROUND

[0002] At present, there are few patents of dry method sorting machine air distribution plate authorized in China, and most of them mainly adopt wet method sorting technology or single vibration sorting mechanism, and there is a large innovation space in the technical field, especially in the design and optimization of air distribution plate.

[0003] The Chinese invention patent with the announcement number CN102806202B announced on July 16, 2014 discloses a kind of air distribution plate vibration type fluidized bed sorting machine, which can be used for dry method sorting of coal, ore and other materials. It includes fluidized bed shell, pressure distribution air distribution chamber, feeding hopper, discharge device, dust removal sealing cover, vibration air distribution device, base. The fluidized bed shell is connected with dust removal sealing cover above, and is connected with fixed frame, vibration air distribution plate, exciter, gas pre-air distribution chamber, gas pre-air distributor and base below;Vibration energy is transmitted to fluidized bed through vibration air distribution plate, the generation of bubbles in fluidized bed layer is inhibited, uniform and stable fluidization state is formed, material is layered according to Archimedes principle in fluidized bed, feeding is given through the upper end of fluidized bed shell, light product is discharged through the upper end of tail, heavy product is discharged through the lower end of tail, and finally material is separated according to different densities;The sorting machine weakens the influence of bubbles in fluidized bed, reduces the damage loss of vibration to equipment structure, reduces the unit energy consumption of sorting material, and is high-efficiency, energy-saving and environment-friendly. The vibration air distribution plate and the small hole structure on the vibration air distribution plate are simple, and the sorting effect needs to be further improved. SUMMARY

[0004] The technical problem to be solved by the utility model is how to overcome the above-mentioned defects of the prior art, and provide a novel coal dry method fluidization sorting machine.

[0005] To solve the above technical problems, the present coal dry fluidized separator comprises a fluidized bed shell 1, a dust removal sealing cover 2 is arranged on the fluidized bed shell 1, a vibrating sieve plate 3 and a wind guide plate 4 are sequentially arranged in the fluidized bed shell 1 from top to bottom, the wind guide plate 4 is densely provided with wind guide holes 5, the fluidized bed shell 1 above the vibrating sieve plate 3 is a wind selection chamber 6, the fluidized bed shell 1 below the wind guide plate 4 is a wind distribution chamber 7, the dust removal sealing cover 2 is provided with an air outlet 8 at the top, and the wind selection chamber 6 is provided with a feeding port 9 at the rear side, a discharging port 10 at the front side, and a feeding air inlet 11 at the left side of the wind distribution chamber 7.

[0006] In this way, the coal flow entering from the feeding port 9 is accumulated on the vibrating sieve plate 3 in the first wind guide area A in the wind selection chamber 6, the number of the wind guide holes 5 in the first wind guide area A is small, the wind guide tongue plates 12 thereof are vertically upward, the wind force is strong, the coal on the vibrating sieve plate 3 is blown and loosened, and the coal is dispersed and moves to the discharging port while the coal bed thickness becomes smaller.

[0007] After entering the second wind guide area B, the third wind guide area C and the fourth wind guide area D, the air flow guided by the wind guide tongue plates 12 of the wind guide holes 5 is directed to the end of the discharging port 10 away from the feeding air inlet 11 (the right front end of the discharging port 10). Figure 1 In this way, under the same air flow blowing, the larger and heavier coal gangue particles in the coal flow move horizontally for a small distance, and are discharged from the discharging port 10 close to the left front side of the discharging port 10; the smaller and lighter coal particles in the coal flow move horizontally for a large distance, and are discharged from the discharging port 10 close to the right front side of the discharging port 10, and the separation effect is good.

[0008] As an optimization, the wind guide tongue plates 12 of the wind guide holes 5 in the second wind guide area B are at an angle of 45° with the wind guide plate 4; the wind guide tongue plates 12 of the wind guide holes 5 in the third wind guide area C are at an angle of 30° with the wind guide plate 4; and the wind guide tongue plates 12 of the wind guide holes 5 in the fourth wind guide area D are at an angle of 15° with the wind guide plate 4. In this way, it has been proved in practice that the separation efficiency is high.

[0009] The coal dry fluidized separator has simple structure, high separation effect and is suitable for coal separation plants in arid and water-scarce areas. BRIEF DESCRIPTION OF DRAWINGS

[0010] The coal dry fluidized separator will be further described below in combination with the drawings:

[0011] Figure 1 is a perspective structural schematic view of the coal dry fluidized separator of the present application;

[0012] Figure 2 is Figure 1 is a top view schematic view of the coal dry fluidized separator of the present application with the dust removal sealing cover removed;

[0013] Figure 3 is Figure 2 is a top view schematic view of the coal dry fluidized separator of the present application with the vibrating sieve plate removed;

[0014] Figure 4 is a top view structural schematic view of the air deflector of the coal dry fluidized separator of the present application;

[0015] Figure 5 is a schematic view of the included angle between the air deflector tongue plate and the air deflector of the air deflector hole in the first air deflector area of the coal dry fluidized separator of the present application;

[0016] Figure 6 is a schematic view of the included angle between the air deflector tongue plate and the air deflector of the air deflector hole in the second air deflector area of the coal dry fluidized separator of the present application;

[0017] Figure 7 is a schematic view of the included angle between the air deflector tongue plate and the air deflector of the air deflector hole in the third air deflector area of the coal dry fluidized separator of the present application;

[0018] Figure 8 is a schematic view of the included angle between the air deflector tongue plate and the air deflector of the air deflector hole in the fourth air deflector area of the coal dry fluidized separator of the present application.

[0019] Figures 5-8 The solid arrows indicate the air flow direction.

[0020] In the drawings: 1 is the fluidized bed shell, 2 is the dust removal sealing cover, 3 is the vibrating sieve plate, 4 is the air deflector, 5 is the air deflector hole, 6 is the air separation chamber, 7 is the air distribution chamber, 8 is the air outlet, 9 is the feeding port, 10 is the discharging port, 11 is the air inlet, 12 is the air deflector tongue plate; A is the first air deflector area, B is the second air deflector area, C is the third air deflector area, D is the fourth air deflector area. DETAILED DESCRIPTION

[0021] Embodiment one: as Figures 1-3As shown, the new coal dry fluidized separator, including fluidized bed shell 1, fluidized bed shell 1 is equipped with dust seal cover 2, fluidized bed shell 1 is equipped with vibration sieve plate 3 and air deflector 4 from top to bottom in turn, air deflector 4 is densely covered with air guide hole 5, the fluidized bed shell 1 above the vibration sieve plate 3 is air separation chamber 6, the fluidized bed shell 1 below the air deflector 4 is air distribution chamber 7, the dust seal cover 2 top is equipped with air outlet 8, its characterized in that: the rear side of air separation chamber 6 is equipped with feed inlet 9, the front side of air separation chamber 6 is equipped with discharge port 10, the left side of air distribution chamber 7 is equipped with air inlet 11, the fluidized bed shell 1 side wall near the air inlet 11 and the adjacent fluidized bed shell 1 front side wall and fluidized bed shell 1 rear side wall are all right angle, the width of the fluidized bed shell 1 front side wall where the discharge port 10 is located is greater than the width of the fluidized bed shell 1 rear side wall, the horizontal section of the vibration sieve plate 3, the air deflector 4 and the fluidized bed shell 1 are all right angle trapezoid.

[0022] As shown, Figure 4 The air deflector 4 is divided into first air guide area A, second air guide area B, third air guide area C and fourth air guide area D from the rear bottom edge near the rear side wall of the fluidized bed shell 1 to the front bottom edge near the front side wall of the fluidized bed shell 1, each air guide hole 5 is a square hole, each square hole has a guide tongue plate 12 connected to one side, the guide tongue plates 12 in the second air guide area B, the third air guide area C and the fourth air guide area D all point to the end of the discharge port 10 away from the air inlet 11, and can guide the airflow from the air distribution chamber 7 below to the end of the discharge port 10 away from the air inlet 11.

[0023] As shown, Figure 5 The guide tongue plate 12 of the air guide hole 5 in the first air guide area A is perpendicular to the air deflector 4; as shown, Figure 6 The guide tongue plate 12 of the air guide hole 5 in the second air guide area B is at an angle of 45° with the air deflector 4; as shown, Figure 7 The guide tongue plate 12 of the air guide hole 5 in the third air guide area C is at an angle of 30° with the air deflector 4; as shown, Figure 8 The guide tongue plate 12 of the air guide hole 5 in the fourth air guide area D is at an angle of 15° with the air deflector 4.

[0024] As shown, Figure 4 The right side of the first air guide area A extends along the right side inclined wall of the fluidized bed shell 1 to the discharge port 10, and the second air guide area B is correspondingly reduced.

[0025] Experiments found that if the first air guide area A is not extended as described above, during use, the coal flow will produce local aggregation phenomenon near the right side inclined wall of the fluidized bed shell 1 after entering the second air guide area B. After the first air guide area A is extended, the extended part is not easy to produce local aggregation phenomenon of coal flow.

Claims

1. A novel coal dry fluidized separator, comprising a shell (1), a dust removal sealing cover (2) is arranged on the shell (1), a vibrating sieve plate (3) and a guide vane (4) are arranged in the shell (1) from top to bottom in sequence, the guide vane (4) is densely covered with guide vane holes (5), the shell (1) above the vibrating sieve plate (3) is a wind selection chamber (6), the shell (1) below the guide vane (4) is a air distribution chamber (7), and an air outlet (8) is arranged at the top of the dust removal sealing cover (2), characterized in that: The air selection chamber (6) is provided with an inlet (9) at the rear side, and an outlet (10) at the front side, and the air distribution chamber (7) is provided with an air inlet (11) at the left side, the side wall of the shell (1) close to the air inlet (11) is at right angles with the front side wall and the rear side wall of the shell (1), the width of the front side wall of the shell (1) where the outlet (10) is located is greater than the width of the rear side wall of the shell (1), the horizontal section of the vibrating sieve plate (3), the air guide plate (4) and the shell (1) are all right-angled trapezoids, the air guide plate (4) is divided into a first air guide area (A), a second air guide area (B), a third air guide area (C) and a fourth air guide area (D) from the rear bottom edge close to the rear side wall of the shell (1) to the front bottom edge close to the front side wall of the shell (1), each air guide hole (5) is a square hole, and each square hole is provided with an air guide tongue plate (12) at one side, the air guide tongue plate (12) of the air guide hole (5) in the first air guide area (A) is perpendicular to the air guide plate (4), the air guide tongue plates (12) in the second air guide area (B), the third air guide area (C) and the fourth air guide area (D) all point to the end of the outlet (10) away from the air inlet (11), and can guide the airflow from the air distribution chamber (7) below to the end of the outlet (10) away from the air inlet (11). ​ 2. The novel coal dry fluidized separator according to claim 1, characterized in that: The air guide tongue plate (12) of the air guide hole (5) in the second air guide area (B) is at an angle of 45° with the air guide plate (4); the air guide tongue plate (12) of the air guide hole (5) in the third air guide area (C) is at an angle of 30° with the air guide plate (4); and the air guide tongue plate (12) of the air guide hole (5) in the fourth air guide area (D) is at an angle of 15° with the air guide plate (4).

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