A lump coal grading and decelerating vibrating screen screen plate

Abstract

This utility model relates to the field of coal processing technology, and discloses a vibrating screen plate for grading and decelerating lump coal. The plate plate and frame are included, along with a crossbeam welded to the plate plate. A tube is welded to the bottom of the plate plate and crossbeam. A screw is rotatably connected inside the tube. Threaded sleeves are threaded to both sides of the screw, and the threaded sleeves are slidably connected to the inner wall of the tube. This utility model uses a handwheel to rotate the screw, causing the threaded sleeves to move a fixing plate into a pin groove, thus fixing the frame and screen body. This divides a single screen into multiple smaller screens. Furthermore, the locking of the screw by the positioning component increases the stability of the frame and screen body. In case of localized damage, simply rotating the handwheel disengages the fixing plate from the pin groove, allowing for partial disassembly and replacement of the screen without replacing the entire larger screen, thus saving material costs.

Description

Technical Field

[0001] This utility model relates to the field of coal processing technology, specifically to a sieve plate for a lump coal grading and deceleration vibrating screen. Background Technology

[0002] The lump coal grading and deceleration vibrating screen is a core sorting equipment in coal processing, mainly used to separate raw coal into multiple grades of marketable coal according to particle size. Its working principle is based on a dual-axis inertial vibration system. A motor drives an eccentric block to rotate, generating directional excitation force, causing the screen box to vibrate in an elliptical trajectory at a 25-35° inclination angle. The screen surface adopts a multi-layer stepped stainless steel screen plate structure (with progressively decreasing aperture). Under the combined action of vibrational inertial force and gravity, the lump coal undergoes a throwing motion. Coal lumps smaller than the screen aperture size pass through the screen and fall, achieving grading, while oversized particles slide along the screen surface towards the discharge end.

[0003] The lump coal grading deceleration vibrating screen consists of multiple screen plates with different apertures. Each screen plate has a screen mesh, but the screen mesh on the surface of the screen plate is a whole. If the screen mesh is damaged in a part, such as the aperture increases or part of the structure breaks, the entire screen mesh needs to be replaced, which results in a large material cost. Utility Model Content

[0004] The purpose of this utility model is to provide a screen plate for a lump coal grading and deceleration vibrating screen to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lump coal grading and deceleration vibrating screen plate, comprising a plate body and a frame, and further comprising:

[0006] A crossbeam is welded to the plate. A tube is welded to the bottom of the plate and the crossbeam. A screw is rotatably connected inside the tube. Threaded sleeves are threaded to both sides of the screw surface. The threaded sleeves are slidably connected to the inner wall of the tube.

[0007] A fixing plate is welded to the top of the threaded sleeve. The bottom of the plate and the crossbeam are both provided with bottom grooves. The two sides of the frame are provided with pin grooves that cooperate with the fixing plate. One end of the screw extends to the outside of the tube and is bolted with a handwheel. Positioning components are provided inside and outside the tube.

[0008] Preferably, the positioning assembly includes a locking plate, a movable column, and a sliding sleeve. The sliding sleeve is bolted to the inner wall of the tube body, the movable column is slidably connected to the inner wall of the sliding sleeve, the locking plate is bolted to one end of the movable column, a compression spring is fixed to one side of the sliding sleeve, and the other end of the compression spring is in contact with the locking plate. Connecting columns are welded to the upper and lower sides of the movable column away from the locking plate. The positioning assembly also includes a horizontal plate bolted to the outer surface of the tube body. A handle is rotatably connected to the surface of the horizontal plate. One end of the handle extends into the interior of the tube body and is bolted to a frame plate, which is fitted onto the surface of the movable column.

[0009] Preferably, the card plate has an arc-shaped design, and the surface of the screw is not threaded in certain areas.

[0010] Preferably, the top of the plate and the crossbeam are provided with slots, and the four sides of the frame are welded with blocks.

[0011] Preferably, the fixing plate is L-shaped, and the top of the tube body has a groove for the fixing plate to move.

[0012] Preferably, the pipe body is composed of three interconnected pipe sections.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses a handwheel to rotate a screw, causing a threaded sleeve to pull a fixing plate into a pin groove, thus securing the frame and screen body. This divides a single screen into multiple smaller screens. Furthermore, the locking of the screw by the positioning component increases the stability of the frame and screen body. In case of localized damage, simply rotating the handwheel disengages the fixing plate from the pin groove, allowing for partial disassembly and replacement of the screen without needing to replace the entire larger screen, thus saving material costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram showing the partial frame removed in this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the frame and its surface in this utility model;

[0019] Figure 5 This is a bottom-view structural diagram of the present invention;

[0020] Figure 6 This is a bottom view of the plate structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the tube body and its surface in this utility model;

[0022] Figure 8 This is a cross-sectional view of the tube body of this utility model;

[0023] Figure 9 This utility model Figure 8 A magnified structural diagram at point B in the middle.

[0024] In the diagram: 1. Plate; 2. Crossbeam; 3. Bottom groove; 4. Frame; 5. Screen body; 6. Slot; 7. Block; 8. Pin groove; 9. Tube; 10. Screw; 11. Threaded sleeve; 12. Fixing plate; 13. Handwheel; 14. Positioning assembly; 141. Clamping plate; 142. Movable column; 143. Sliding sleeve; 144. Compression spring; 145. Frame plate; 146. Connecting column; 147. Cross plate; 148. Handle. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figures 1-9 As shown, a lump coal grading deceleration vibrating screen plate includes a plate body 1 and a frame 4. A crossbeam 2 is welded to the surface of the plate body 1, and a pipe body 9 is welded to the bottom of the plate body 1 and the crossbeam 2. The pipe body 9 is composed of three interconnected pipe sections. A screw 10 is rotatably connected inside the pipe body 9. Threaded sleeves 11 are threadedly connected to both sides of the surface of the screw 10. The threaded sleeves 11 are slidably connected to the inner wall of the pipe body 9.

[0027] A fixing plate 12 is welded to the top of the threaded sleeve 11. The fixing plate 12 is L-shaped. The top of the tube body 9 is provided with a groove for the fixing plate 12 to move. The bottom of the plate body 1 and the crossbeam 2 are both provided with bottom grooves 3 for the fixing plate 12 to move. The two sides of the frame 4 are provided with pin grooves 8 that cooperate with the fixing plate 12. One end of the screw 10 extends to the outside of the tube body 9 and is bolted with a handwheel 13 so as to rotate the screw 10. Positioning components 14 are provided inside and outside the tube body 9.

[0028] The positioning assembly 14 includes a clamping plate 141, a movable column 142, and a sliding sleeve 143. The sliding sleeve 143 is bolted to the inner wall of the tube body 9. The movable column 142 is slidably connected to the inner wall of the sliding sleeve 143. The clamping plate 141 is bolted to one end of the movable column 142. In order to adapt to the circular surface of the screw 10 where there is no thread, the clamping plate 141 is designed in an arc shape. The surface of the screw 10 is partially unthreaded. A compression spring 144 is fixed on one side of the sliding sleeve 143, and the other end of the compression spring 144 is in contact with the clamping plate 141. Connecting columns 146 are welded to the upper and lower sides of the movable column 142 away from the clamping plate 141. The positioning assembly 14 also includes a horizontal plate 147 bolted to the outer surface of the tube body 9. A handle 148 is rotatably connected to the surface of the horizontal plate 147. One end of the handle 148 extends into the interior of the tube body 9 and is bolted to a frame plate 145. The frame plate 145 is sleeved on the surface of the movable column 142.

[0029] The reaction force of the compression spring 144 causes the clamping plate 141 to be subjected to a force toward the screw 10, so that the clamping plate 141 is pressed against the surface of the screw 10. If it is necessary to rotate the screw 10, simply hold the handle 148 to move it. Using the lever principle, the frame plate 145 is moved away from the sliding sleeve 143, and the connecting column 146 is pushed to move the movable column 142 and the clamping plate 141 together, so that the clamping plate 141 is temporarily separated from the surface of the screw 10.

[0030] Rotate the screw 10 by handwheel 13 to move the threaded sleeves 11 on both sides away from each other. The top of the plate 1 and the crossbeam 2 are both provided with slots 6, and the four sides of the frame 4 are welded with locking blocks 7. Lift the frame 4 so that the locking blocks 7 align with the slots 6, then lower it. Next, hold the handle 148 to temporarily release the locking of the screw 10 by moving the frame plate 145, and rotate the handwheel 13 to rotate the screw 10, bringing the threaded sleeves 11 on both sides closer together and causing the fixing plate 12 to enter the pin groove 8. This completes the fixing of the frame 4 and the screen body 5, making the screen plate composed of multiple screen bodies 5. Release the handle 148 to allow the locking plate 141 to reattach. The screw 10 is locked to prevent it from rotating as it follows the vibration of the screen plate. If a part of the screen body 5 is damaged (in actual use, the screening machine has an openable door on the side), simply turn the handwheel 13 to rotate the screw 10, allowing the threaded sleeves 11 on both sides to disengage the fixing plate 12 from the pin groove 8, remove the frame 4 corresponding to the damaged screen body 5, and then replace it with a new one. There is no need to replace the entire large screen, saving material costs. Moreover, the locking of the screw 10 by the positioning component 14 increases the firmness of the frame 4 and the screen body 5.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A vibrating screen plate for grading lump coal, comprising a plate body (1) and a frame (4), characterized in that, Also includes: A crossbeam (2) is welded to the plate (1). A tube (9) is welded to the bottom of the plate (1) and the crossbeam (2). A screw (10) is rotatably connected inside the tube (9). Threaded sleeves (11) are threaded to both sides of the surface of the screw (10). The threaded sleeves (11) are slidably connected to the inner wall of the tube (9). A fixing plate (12) is welded to the top of the threaded sleeve (11). The bottom of the plate body (1) and the crossbeam (2) are provided with bottom grooves (3). The two sides of the frame (4) are provided with pin grooves (8) that cooperate with the fixing plate (12). One end of the screw (10) extends to the outside of the tube body (9) and is bolted with a handwheel (13). Positioning components (14) are provided inside and outside the tube body (9).

2. The screen plate of the lump coal grading and deceleration vibrating screen according to claim 1, characterized in that: The positioning component (14) includes a locking plate (141), a movable column (142), and a sliding sleeve (143). The sliding sleeve (143) is bolted to the inner wall of the tube body (9). The movable column (142) is slidably connected to the inner wall of the sliding sleeve (143). The locking plate (141) is bolted to one end of the movable column (142). A compression spring (144) is fixed to one side of the sliding sleeve (143), and the other end of the compression spring (144) is connected to the locking plate (141). The movable column (142) has connecting columns (146) welded on both the upper and lower sides of the end away from the card plate (141). The positioning assembly (14) also includes a horizontal plate (147) bolted to the outer surface of the tube body (9). A handle (148) is rotatably connected to the surface of the horizontal plate (147). One end of the handle (148) extends into the interior of the tube body (9) and is bolted with a frame plate (145). The frame plate (145) is sleeved on the surface of the movable column (142).

3. The screen plate of the lump coal grading and deceleration vibrating screen according to claim 2, characterized in that: The card plate (141) has an arc-shaped design, and the surface of the screw (10) is not threaded in some areas.

4. The screen plate of a lump coal grading and deceleration vibrating screen according to claim 1, characterized in that: The top of the plate (1) and the crossbeam (2) are provided with slots (6), and the four sides of the frame (4) are welded with blocks (7).

5. The screen plate of a lump coal grading and deceleration vibrating screen according to claim 1, characterized in that: The fixing plate (12) is designed in an L-shape, and the top of the tube (9) is provided with a groove for the fixing plate (12) to move.

6. The screen plate of a lump coal grading and deceleration vibrating screen according to claim 1, characterized in that: The pipe body (9) is composed of three interconnected pipe sections.

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