A cross-sieve uniform distribution structure

Abstract

The utility model discloses a kind of for crossing sieve uniform material distribution structure, it is related to crossing sieve structure technical field, including first hopper, first hopper is through and is equipped with conveyor belt in lower end, conveyor belt end is equipped with second hopper, second hopper lower part is opened in the side away from conveyor belt and is equipped with sieve box below the opening side;At least a pair of fan plate is equipped in the first hopper, fan plate is inclined to set up and direction is lower end direction away from another fan plate direction inclination, part of material is spreaded and shunted to two sides direction;Second hopper is equipped with at least a pair of deflector, deflector is inclined to set up and direction is far from conveyor belt one end direction away from another fan plate direction inclination, material is unfolded along sieve box width direction, sieve box is screened to material. Material evenly covers sieve box inside, effectively solve the problem of material accumulation and sieve shaft idling in traditional structure, reach the effect of improving screening efficiency and screening quality.

Description

Technical Field

[0001] This utility model relates to the technical field of cross-screen structure, and in particular to a structure for uniform material distribution in a cross-screen. Background Technology

[0002] Cross-screens are core screening equipment in the raw coal preparation process of coking plants, mainly used for grading and removing impurities from raw coal to provide raw materials of qualified particle size for subsequent coking processes. The uniformity of material distribution is one of the core factors determining the screening performance of a cross-screen. Uneven distribution can lead to localized material accumulation and overloading on the screen shaft, as well as localized empty sections. This not only reduces screening efficiency but also exacerbates localized wear on the screen shaft, shortens its service life, and increases equipment maintenance costs. Utility Model Content

[0003] The purpose of this invention is to provide a uniform material distribution structure for cross-screens, which enables materials to evenly cover the inside of the screen box, effectively solving the problems of material accumulation and empty screen shafts in traditional structures, and significantly improving screening efficiency and screening quality.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A structure for uniform material distribution in a cross-screen includes a first hopper, which is vertically connected and has a conveyor belt at its lower end. A second hopper is located at the end of the conveyor belt. The lower part of the second hopper has an opening on the side away from the conveyor belt, and a screen box is located below the opening. The first hopper contains at least one pair of fan plates, which are inclined vertically with their lower ends tilted away from the other fan plate, thus spreading and diverting part of the material to both sides. The second hopper contains at least one pair of deflecting plates, which are inclined forward and backward with their ends tilted away from the conveyor belt and away from the other fan plate, thus spreading the material along the width of the screen box, and the screen box screens the material.

[0005] Furthermore, the first hopper includes a hopper body and locking pins fixed to both sides of the hopper body. The lower end of the locking pin is connected to an angle bracket, and the angle bracket is fixed to the corresponding side of the conveyor belt.

[0006] Furthermore, two sets of positioning holes are provided through the opposite side plates of the first hopper, and positioning pins are provided in the fan plate. The positioning pins pass through the corresponding positioning holes and are connected to the first locking nut.

[0007] Furthermore, the first hopper includes two oppositely arranged end plates, which are inclined with their lower ends tilting towards the other end plate.

[0008] Furthermore, the second hopper includes a bottom frame with two bottom holes on the bottom plate of the bottom frame. A positioning post is provided in the deflection plate, and the positioning post passes through the corresponding bottom hole and is connected to the second locking nut.

[0009] Furthermore, the second hopper includes a frame hopper with an opening on the side of the bottom frame away from the conveyor belt. The frame hopper is wider at the top and narrower at the bottom, and its lower end is connected to the upper end of the bottom frame near the conveyor belt.

[0010] Furthermore, the deflection plate is L-shaped, comprising a lower plate located in the bottom frame and an upper plate located inside the frame bucket, with the width of the lower plate being greater than that of the upper plate.

[0011] Furthermore, the screen box includes several screen shafts, and multiple motors are provided on one side of the screen box, with the motors driving one or more screen shafts to rotate.

[0012] In summary, this utility model has the following beneficial effects: The first hopper uses two sets of inclined fan plates, and the second hopper uses two sets of inclined deflector plates to form a multi-stage material distribution adjustment. The fan plates have a larger opening at the top than at the bottom, which can initially spread and divert the concentrated material conveyed by the conveyor belt, avoiding direct impact of the material on the hopper. The hopper body adopts a hollow trapezoidal frame structure that is larger at the top and smaller at the bottom, which further guides the material to be evenly distributed on both sides. After entering the second hopper, the two sets of deflector plates with front openings smaller than tail openings can fully spread the material along the screen width, so that the material evenly covers the inside of the screen box. This effectively solves the problems of material accumulation and empty screen shaft in traditional structures, and significantly improves screening efficiency and screening quality. The locking pins of the first hopper are fixed to both sides of the conveyor belt by angle brackets, ensuring a firm and stable connection that can effectively withstand the load from material impact. The deflection plate is embedded in the groove of the bottom frame. This embedded structure not only improves the support stability of the deflection plate but also prevents materials from getting stuck in the structural gaps. Meanwhile, the fan plate is installed by plugging and unplugging positioning pins, and the deflection plate is detachably fixed by positioning pins and locking nuts. When structural maintenance or component replacement is required, there is no need to disassemble the entire structure; only the corresponding positioning parts need to be removed to complete the operation, which greatly reduces maintenance costs and downtime. In this device, the L-shaped deflector plate can smoothly guide the material, preventing it from directly impacting the screen box and screen shaft, thus reducing impact wear. The multi-stage material distribution design ensures that the material is evenly distributed on the screen shaft, avoiding localized overload wear and extending the service life of vulnerable components such as the screen shaft. In addition, multiple motors on one side of the screen box provide stable power, which, combined with the uniform material distribution, makes the equipment run more smoothly, reducing the occurrence of excessive motor current or screen shaft wear caused by uneven material distribution, and improving the stability and reliability of the equipment operation. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a cross-screen uniform material distribution structure according to the present invention. Figure 2 This is a side view of the structure of a cross-screen uniform material distribution structure according to the present invention; Figure 3 This is a structural exploded view of the first feeding hopper part in a cross-screen uniform material distribution structure of the present invention; Figure 4 This is a structural breakdown diagram of the screen box portion in a cross-screen uniform material distribution structure according to the present invention. Figure 5 This is a structural breakdown diagram of the second feeding hopper in a cross-screen uniform material distribution structure according to the present invention.

[0015] In the diagram, 1 is the screen box; 11 is the motor; 2 is the second hopper; 21 is the frame hopper; 211 is the bottom hole; 22 is the deflection plate; 23 is the bottom frame; 24 is the positioning pin; 3 is the conveyor belt; 4 is the first hopper; 41 is the hopper body; 411 is the positioning hole; 42 is the locking pin; 43 is the corner bracket; 44 is the fan plate; 45 is the positioning pin; and 46 is the first locking nut. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0017] A structure for uniform material distribution in cross-screens, such as Figure 1 and Figure 2 As shown, it includes a first feeding hopper 4, which is vertically connected and has a conveyor belt 3 at its lower end. A second feeding hopper 2 is located at the end of the conveyor belt 3. The lower part of the second feeding hopper 2 has an opening on the side away from the conveyor belt 3, and a screen box 1 is located below the opening (the second feeding hopper 2 is fixed to the top of one side of the screen box 1). The material enters the conveyor belt 3 from the first feeding hopper 4, is conveyed to the second feeding hopper 2, and then enters the screen box 1 through the second feeding hopper 2. The screen box 1 uses a cross screen to screen the material (coal or other materials). Both the first feeding hopper 4 and the second feeding hopper 2 are equipped with a material distribution structure, which forms a multi-stage material distribution with the conveyor belt 3, so that the material can enter the screen box 1 more evenly.

[0018] like Figure 3 As shown, the first hopper 4 is fixed above the conveyor belt 3. Specifically, the first hopper 4 includes a hopper body 41 and locking pins 42 fixed to both ends of the hopper body 41 (the locking pins 42 can be inserted upward into the fixing seats at both ends of the hopper body 41, and a stable connection is achieved by the weight of the hopper body 41). The lower end of the locking pin 42 is connected to the corner bracket 43, and the corner bracket 43 is fixed to the corresponding side plate of the conveyor belt 3. The locking pin 42 is fixed between the hopper body 41 and the conveyor belt 3 by welding or nuts, etc. The hopper body 41 contains at least one pair of fan plates 44. The fan plates 44 are inclined vertically, with the lower end tilted away from the other fan plate 44 (forming a figure-eight shape in the vertical direction). This disperses and diverts some of the material to both sides, allowing the concentrated material to be diverted to both sides when it is discharged from the middle of the first hopper 4. The hopper body 41 includes two oppositely arranged end plates (and two oppositely arranged side plates). The end plates (and side plates) are inclined, with the lower end tilted towards the other end plate (or the other side plate). In this embodiment, the upper parts of the end plates are parallel to each other, and the lower parts are inclined, forming a trapezoid with a larger upper part and a smaller lower part. The upper and lower parts of the side plates are both inclined, with the lower part having a larger inclination angle. The upper and lower parts respectively form two trapezoids with a larger upper part and a smaller lower part (the fan plate 44 is located in the space of the upper trapezoid). The diversion function of the fan plates 44 better achieves a more even distribution of the concentrated material in the upper part into three parts.

[0019] like Figure 3 As shown, two sets of positioning holes 411 are provided through the opposite side plates of the hopper body 41. A positioning pin 45 is inserted into each positioning hole 411. A fan plate 44 is fixed to the outside of the positioning pin 45. The positioning pin 45 passes through the corresponding positioning hole 411 and is connected to the first locking nut 46. In this embodiment, the positioning pin 45 is two whole shafts that pass through the fan plate 44 and are respectively connected to the first locking nut 46 at both ends. The first locking nut 46 is used to press against the outer side plate of the hopper body 41 to achieve fixation. The positioning pin 45 can be a square shaft or other non-round shaft, or it can be connected to the fan plate 44 by key connection or other means so that the fan plate 44 and the positioning pin 45 do not rotate relative to each other. In some embodiments, the fan plate 44 can also be fixed to the hopper body 41 by pressing the side plate of the hopper body 41 against the two ends of the fan plate 44. The fan plates 44 in the first feeding hopper 4 are inserted into the positioning holes 411 of the hopper body 41 by positioning pins 45. According to the material flow rate and particle size requirements, the insertion angle of the positioning pins 45 in different positioning holes 411 can be adjusted to change the tilt angle and relative spacing of the fan plates 44, so as to flexibly adjust the feeding range and diversion effect. The two sets of fan plates 44 are inclined and the opening at the top is larger than the opening at the bottom. The hopper body 41 is a hollow trapezoidal structure with a larger top and a smaller bottom. The bottom of the locking column 42 is fixed to both sides of the conveyor belt 3 by the corner bracket 43, thus realizing the installation of the first feeding hopper 4 and the initial material distribution work.

[0020] like Figure 4 As shown, the screen box 1 includes an outer box and an inner cross screen. The cross screen includes several parallel screen shafts. Multiple motors 11 are fixed on one side of the screen box 1. The motors 11 drive one or more screen shafts to rotate (in this embodiment, while the motor 11 drives one screen shaft to rotate, it also drives an adjacent screen shaft to rotate through a chain). The screen shafts realize the screening of materials. In this embodiment, the second hopper 2 is fixed at one end of the outer box.

[0021] like Figure 4 and Figure 5 As shown, the second hopper 2 is provided with at least one pair of deflecting plates 22. The deflecting plates 22 are inclined back and forth and the direction is inclined away from the conveyor belt 3 and away from the other plate 44 (the front and back direction is in the shape of an 8). The material is spread out along the width of the screen box 1 (the upper end of the second hopper 2 is fed and the lower end is closed by the bottom plate, and the material is discharged on the side facing the conveyor belt 3. The second hopper 2 as a whole or its bottom plate can be set to be inclined so that the lower end of the bottom plate is inclined towards the discharge port, which facilitates the smooth discharge). The screen box 1 screens the material that is spread out by the second hopper 2. Specifically, the second hopper 2 includes a frame hopper 21 fixed to the top of the screen box 1 and a bottom frame 23 integrally connected to the bottom of the frame hopper 21. Two bottom holes 211 are opened on the bottom plate of the bottom frame 23. A positioning post 24 is provided in the deflection plate 22 (the positioning post 24 can be inserted into the deflection plate 22 by means of non-circular shaft or key connection, or it can be fixed to the lower end of the deflection plate 22). The positioning post 24 passes through the corresponding bottom hole 211 and is connected to the second locking nut. The deflecting plate 22 inside the second hopper 2 is inserted into different bottom holes 211 of the bottom frame 23 by positioning pins 24 and fixed with the second locking nut. The tilt angle and expansion range of the deflecting plate 22 can be easily adjusted to meet the adaptation requirements of different material types and screening parameters. This adjustable design enables the equipment to adapt to diverse production conditions and improves the versatility of the equipment.

[0022] like Figure 5As shown, the bottom frame 23 has an opening on the side away from the conveyor belt 3, and the hopper 21 is wider at the top and narrower at the bottom, with its lower end connected to the upper end of the bottom frame 23 near the conveyor belt 3. The deflection plate 22 is correspondingly set in an L-shape, including a lower plate in the bottom frame 23 and an upper plate in the hopper 21. The width of the lower plate is greater than that of the upper plate. The width of the bottom frame 23 is adapted to the internal width of the screen box 1, so that the deflection plate 22 is embedded in the groove of the bottom frame 23. The L-shaped deflection plate 22 and the bottom frame 23 cooperate to guide the material smoothly, avoiding the material from directly impacting the screen box 1 and the screen shaft, and reducing the impact wear of the equipment. The two sets of deflection plates 22 are fixed at an angle in the bottom frame 23, and the opening at the end near the conveyor belt 3 is smaller than the opening at the other end, so as to achieve uniform material distribution. Working principle: In this embodiment, two sets of inclined fan plates 44 in the first hopper 4 and two sets of inclined deflector plates 22 in the second hopper 2 form a multi-stage material distribution adjustment. The design of the top opening of the fan plate 44 being larger than the bottom opening can initially spread and divert the concentrated material conveyed by the conveyor belt 3, avoiding direct impact of the material on the second hopper 2. The hopper body 41 adopts a hollow trapezoidal frame structure with a larger top and a smaller bottom, further guiding the material to be evenly distributed on both sides. After the coal enters the second hopper 2 through the upper conveyor belt 3, the two sets of deflector plates 22 with front openings smaller than tail openings can fully spread the material along the screen width direction, so that the material evenly covers the inside of the screen box 1, effectively solving the problems of material accumulation and empty screen shaft in traditional structures, and significantly improving screening efficiency and screening quality.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A structure for uniform material distribution in a cross-screen, characterized in that: The system includes a first hopper that extends vertically and has a conveyor belt at its lower end. A second hopper is located at the end of the conveyor belt. The lower part of the second hopper has an opening on the side away from the conveyor belt, and a screen box is located below the opening. The first hopper contains at least one pair of fan plates, which are inclined vertically with their lower ends tilted away from the other fan plate, thus spreading and diverting some of the material to both sides. The second hopper contains at least one pair of deflecting plates, which are inclined forward and backward with their ends tilted away from the conveyor belt and away from the other fan plate, thus spreading the material along the width of the screen box, which then screens the material.

2. The uniform material distribution structure for a cross-screen according to claim 1, characterized in that: The first hopper includes a hopper body and locking pins fixed to both sides of the hopper body. The lower end of the locking pin is connected to an angle bracket, and the angle bracket is fixed to the corresponding side of the conveyor belt.

3. A uniform material distribution structure for a cross-screen as described in claim 1 or 2, characterized in that: Two sets of positioning holes are provided through the two side plates opposite to the first hopper. A positioning pin is provided in the fan plate. The positioning pin passes through the corresponding positioning hole and is connected to the first locking nut.

4. The uniform material distribution structure for a cross-screen according to claim 1, characterized in that: The first hopper includes two oppositely arranged end plates, which are inclined with their lower ends tilting towards the other end plate.

5. The uniform material distribution structure for a cross-screen according to claim 1, characterized in that: The second hopper includes a bottom frame with two bottom holes on the bottom plate of the bottom frame. A positioning post is provided in the deflection plate, and the positioning post passes through the corresponding bottom hole and is connected to the second locking nut.

6. A uniform material distribution structure for a cross-screen according to claim 5, characterized in that: The second hopper includes a frame hopper with an opening on the side of the bottom frame away from the conveyor belt. The frame hopper is wider at the top and narrower at the bottom, and its lower end is connected to the upper end of the bottom frame near the conveyor belt.

7. A uniform material distribution structure for a cross-screen according to claim 6, characterized in that: The deflection plate is L-shaped, comprising a lower plate located in the bottom frame and an upper plate located inside the frame hopper, with the lower plate being wider than the upper plate.

8. A uniform material distribution structure for a cross-screen according to claim 1, characterized in that: The screen box includes several screen shafts, and multiple motors are provided on one side of the screen box. The motors drive one or more screen shafts to rotate.

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