Screening device for coal processing

Abstract

The utility model discloses a coal processing screening device which comprises a screening machine, the bottom of the screening machine is fixedly connected with a supporting frame, the two sides of the interior of the supporting frame are each provided with a movable frame, and the front face and the back face of each movable frame are both connected with the inner wall of the supporting frame in a sliding mode. A plurality of transmission boxes are fixedly connected to the interior of the moving frame, moving blocks are slidably connected to the interiors of the transmission boxes, connecting rods are fixedly connected to the inner sides of the moving blocks, the inner sides of the connecting rods penetrate to the exteriors of the transmission boxes and are fixedly connected with guide wheels, and rebounding devices are fixedly connected to the outer sides of the moving blocks; the outer side of the rebound device is fixedly connected with the inner wall of the transmission box, and sliding blocks are fixedly connected to the front face and the back face of the movable frame. The material receiving frame can be effectively aligned, and the phenomenon that when the material receiving frame is pushed in for material receiving, the material receiving frame is prone to skew and material leakage, a user needs to frequently adjust the material receiving frame, and the practicability of the drum screening machine is reduced is prevented.

Description

Technical Field

[0001] This utility model relates to the field of coal screening technology, specifically a screening device for coal processing. Background Technology

[0002] Coal is an important fossil fuel, mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, and sulfur, with carbon accounting for the largest proportion, usually exceeding 80%. Coal can be classified according to various factors such as its degree of coalification, origin, and technological properties. Based on the degree of coalification, coal can be divided into three main categories: anthracite, bituminous coal, and lignite. Among them, anthracite has the highest degree of coalification, low volatile matter, and high calorific value, making it the highest quality coal. Bituminous coal has a medium degree of coalification, with volatile matter and calorific value between anthracite and lignite. Lignite has the lowest degree of coalification, high volatile matter, low calorific value, and is prone to spontaneous combustion.

[0003] In the coal screening process, the drum screen plays a key role. However, most drum screens are currently designed with the waste receiving frame placed directly at the bottom of the screen. This approach has obvious drawbacks: when the receiving frame is pushed in, it is easy to become skewed due to improper operation or design defects, which can lead to uneven material receiving and even waste leakage, seriously affecting the efficiency and practicality of the drum screen.

[0004] Therefore, improvements are needed to the rotary drum screen to prevent uneven material receiving or leakage when the receiving trolley of the rotary drum screen receives waste materials. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a screening device for coal processing, which has the advantage of alignment and correction. It solves the problem that most current rotary drum screens have waste receiving frames placed directly at the bottom of the screen, which has obvious drawbacks: when the receiving frame is pushed in, it is easy to become skewed due to improper operation or design defects, which leads to uneven material receiving and may even cause waste leakage, seriously affecting the efficiency and practicality of the rotary drum screen.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for processing coal, comprising:

[0007] A screening machine has a support frame fixedly connected to its bottom. Movable frames are provided on both sides inside the support frame. The front and back of each movable frame are slidably connected to the inner wall of the support frame. Multiple transmission boxes are fixedly connected inside each movable frame. Movable blocks are slidably connected inside each transmission box. A connecting rod is fixedly connected to the inner side of each movable block. The inner side of the connecting rod extends to the outside of the transmission box and is fixedly connected to a guide wheel. A rebound device is fixedly connected to the outer side of each movable block. The outer side of the rebound device is fixedly connected to the inner wall of the transmission box. Slider blocks are fixedly connected to both the front and back of each movable frame. The end of the slider away from the movable frame extends into the interior of the support frame and is slidably connected to the inner wall of the support frame.

[0008] In a preferred embodiment of this utility model, transmission grooves are provided on both the front and rear sides of the inner wall of the movable frame, and rotating rods are provided on both the front and rear sides of the top of the movable frame. The bottom of the rotating rod extends into the interior of the transmission groove and is fixedly connected to a first bevel gear. A second bevel gear meshes with the bottom of the first bevel gear. A threaded rod is fixedly connected to the surface of the second bevel gear. The end of the threaded rod away from the second bevel gear extends into the interior of the slider and is threadedly connected to a sleeve. The surface of the sleeve contacts the inner wall of the slider.

[0009] As a preferred embodiment of this utility model, rotating blocks are provided on both the front and rear sides of the top of the movable frame, and the bottom of the rotating blocks is fixedly connected to the top of the rotating rod.

[0010] As a preferred embodiment of this invention, a bushing is fitted onto the surface of the rotating rod, and the bottom of the bushing is fixedly connected to the top of the movable frame.

[0011] As a preferred embodiment of the present invention, a support rod is fixedly connected to the surface of the second bevel gear, and the end of the support rod away from the second bevel gear is movably connected to the inner wall of the transmission groove through a bearing.

[0012] As a preferred embodiment of this utility model, a handle is fixedly connected to the outer side of the movable frame, and the handle is used in conjunction with the movable frame.

[0013] As a preferred embodiment of this invention, the slider has an opening inside, and the width of the opening is greater than the width of the sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model can effectively align the receiving frame, preventing the receiving frame from tilting and leaking material when it is pushed in to receive material, which would require frequent adjustments by the user and reduce the practicality of the drum screen.

[0016] 2. By setting up a transmission groove, a rotating rod, a first bevel gear, a second bevel gear, a threaded rod, and a retaining sleeve, this utility model can adjust the position of the moving frame, thereby improving the performance of the moving block. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial enlarged view of the present invention;

[0019] Figure 3 This is an enlarged cross-sectional view of the movable frame of this utility model;

[0020] Figure 4 This is an enlarged cross-sectional view of the transmission box of this utility model.

[0021] In the diagram: 1. Screening machine; 2. Support frame; 3. Moving frame; 4. Transmission box; 5. Moving block; 6. Connecting rod; 7. Guide wheel; 8. Rebound device; 9. Sliding block; 10. Transmission groove; 11. Rotating rod; 12. First bevel gear; 13. Second bevel gear; 14. Threaded rod; 15. Sleeve; 16. Rotating block; 17. Bushing; 18. Support rod; 19. Handle; 20. Opening. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 As shown, the present invention provides a screening device for processing coal, comprising:

[0024] Screening machine 1, with a support frame 2 fixedly connected to the bottom of the screening machine 1. Movable frames 3 are provided on both sides inside the support frame 2. The front and back of the movable frames 3 are slidably connected to the inner wall of the support frame 2. Multiple transmission boxes 4 are fixedly connected inside the movable frames 3. Movable blocks 5 are slidably connected inside the transmission boxes 4. A connecting rod 6 is fixedly connected to the inner side of the movable blocks 5. The inner side of the connecting rod 6 extends to the outside of the transmission boxes 4 and is fixedly connected to a guide wheel 7. A rebounder 8 is fixedly connected to the outer side of the movable blocks 5. The outer side of the rebounder 8 is fixedly connected to the inner wall of the transmission boxes 4. A slider 9 is fixedly connected to both the front and back of the movable frames 3. The end of the slider 9 away from the movable frames 3 extends into the interior of the support frame 2 and is slidably connected to the inner wall of the support frame 2.

[0025] refer to Figure 3The front and rear sides of the inner wall of the movable frame 3 are provided with transmission grooves 10. The front and rear sides of the top of the movable frame 3 are provided with rotating rods 11. The bottom of the rotating rod 11 extends into the interior of the transmission groove 10 and is fixedly connected to a first bevel gear 12. The bottom of the first bevel gear 12 meshes with a second bevel gear 13. The surface of the second bevel gear 13 is fixedly connected to a threaded rod 14. The end of the threaded rod 14 away from the second bevel gear 13 extends into the interior of the slider 9 and is threadedly connected to a sleeve 15. The surface of the sleeve 15 contacts the inner wall of the slider 9.

[0026] As a technical optimization of this utility model, by setting the transmission groove 10, rotating rod 11, first bevel gear 12, second bevel gear 13, threaded rod 14 and sleeve 15, the position of the moving frame 3 can be adjusted, thereby improving the performance of the moving block 5.

[0027] refer to Figure 3 The top front and rear sides of the movable frame 3 are provided with rotating blocks 16, and the bottom of the rotating blocks 16 is fixedly connected to the top of the rotating rod 11.

[0028] As a technical optimization of this utility model, by setting the rotating block 16, it is easier for the user to rotate the rotating rod 11, thereby improving the user's comfort.

[0029] refer to Figure 3 A bushing 17 is fitted on the surface of the rotating rod 11, and the bottom of the bushing 17 is fixedly connected to the top of the moving frame 3.

[0030] As a technical optimization of this utility model, by setting the bushing 17, the rotating rod 11 can be limited to prevent the rotating rod 11 from moving arbitrarily.

[0031] refer to Figure 3 A support rod 18 is fixedly connected to the surface of the second bevel gear 13. The end of the support rod 18 away from the second bevel gear 13 is movably connected to the inner wall of the transmission groove 10 through a bearing.

[0032] As a technical optimization of this utility model, by setting the support rod 18, the second bevel gear 13 can be supported, thereby improving the stability of the support rod 18.

[0033] refer to Figure 2 A handle 19 is fixedly connected to the outside of the movable frame 3, and the handle 19 is used in conjunction with the movable frame 3.

[0034] As a technical optimization of this utility model, by setting a handle 19, it is possible for users to push and pull the movable frame 3, and to prevent the user from directly pulling the movable frame 3 and causing slippage.

[0035] refer to Figure 3The slider 9 has an opening 20 inside, and the width of the opening 20 is greater than the width of the sleeve 15.

[0036] As a technical optimization of this utility model, by setting the opening 20, the sleeve 15 can be completely passed through the slider 9 for movement, preventing the sleeve 15 from getting stuck due to the opening 20 being too small.

[0037] The working principle and usage process of this utility model are as follows: In use, firstly, adjust the position of the moving frame 3 according to the width of the receiving cart. Pull the moving frame 3 outward by the handle 19. After the moving frame 3 moves to the desired position, rotate the rotating block 16. The rotating block 16 drives the rotating rod 11 to rotate. The rotating rod 11 drives the first bevel gear 12 to rotate. The first bevel gear 12 drives the second bevel gear 13 to rotate. The second bevel gear 13 drives the threaded rod 14 to rotate. When the threaded rod 14 rotates, it drives the sleeve 15 to move outward through the thread, so that the sleeve 15 is inserted into the inside of the support frame 2 to limit the slider 9 and the moving frame 3. After the limiting is completed, push the receiving cart into the inside of the support frame 2. When the receiving cart moves, it squeezes the guide wheels 7 on both sides. The guide wheels 7 drive the connecting rod 6 to move outward. The connecting rod 6 drives the moving block 5 to move outward. After the receiving cart moves to the limit position, the spring force of the spring spring 8 makes the guide wheels 7 stick tightly to the surface of the receiving cart to align and correct the receiving cart.

[0038] In summary: This coal processing screening device adjusts the position of the moving frame 3 according to the width of the receiving cart. By pulling the moving frame 3 outwards using handle 19, the moving frame 3 moves to the desired position and then rotates the rotating block 16. The rotating block 16 drives the rotating rod 11 to rotate, which in turn drives the first bevel gear 12 to rotate. The first bevel gear 12 drives the second bevel gear 13 to rotate, which in turn drives the threaded rod 14 to rotate. During rotation, the threaded rod 14 drives the retaining sleeve 15 outwards via its threads, causing the retaining sleeve 15 to engage inside the support frame 2, limiting the movement of the slider 9 and the moving frame 3. After limiting the movement, the receiving cart is pushed into the support frame 2. When in motion, the guide wheels 7 are squeezed to both sides. The guide wheels 7 drive the connecting rod 6 to move outward, and the connecting rod 6 drives the moving block 5 to move outward. After the receiving car moves to the limit position, the spring force of the rebounder 8 makes the guide wheels 7 stick to the surface of the receiving car to align and correct the car. This has the advantage of alignment and correction, solving the problem that most current rotary drum screens have the waste receiving frame placed directly at the bottom of the screen. This approach has obvious drawbacks: when the receiving frame is pushed in, it is easy to become skewed due to improper operation or design defects, which will lead to uneven material receiving and may even cause waste leakage, seriously affecting the efficiency and practicality of the rotary drum screen.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for processing coal, characterized in that, include: A screening machine (1) is fixedly connected to a support frame (2) at its bottom. Movable frames (3) are provided on both sides inside the support frame (2). The front and back sides of the movable frames (3) are slidably connected to the inner wall of the support frame (2). Multiple transmission boxes (4) are fixedly connected inside the movable frames (3). Movable blocks (5) are slidably connected inside the transmission boxes (4). A connecting rod (6) is fixedly connected to the inner side of the movable blocks (5). The inner side of the connecting rod (6) extends through to the outside of the transmission boxes (4) and is fixedly connected to a guide wheel (7). A rebounder (8) is fixedly connected to the outer side of the movable blocks (5). The outer side of the rebounder (8) is fixedly connected to the inner wall of the transmission boxes (4). A slider (9) is fixedly connected to both the front and back sides of the movable frames (3). The end of the slider (9) away from the movable frames (3) extends into the interior of the support frame (2) and is slidably connected to the inner wall of the support frame (2).

2. The screening device for coal processing according to claim 1, characterized in that: The front and rear sides of the inner wall of the movable frame (3) are provided with transmission grooves (10), and the front and rear sides of the top of the movable frame (3) are provided with rotating rods (11). The bottom of the rotating rod (11) extends into the interior of the transmission groove (10) and is fixedly connected to a first bevel gear (12). The bottom of the first bevel gear (12) meshes with a second bevel gear (13). The surface of the second bevel gear (13) is fixedly connected to a threaded rod (14). The end of the threaded rod (14) away from the second bevel gear (13) extends into the interior of the slider (9) and is threadedly connected to a sleeve (15). The surface of the sleeve (15) contacts the inner wall of the slider (9).

3. The screening device for processing coal according to claim 2, characterized in that: The front and rear sides of the top of the movable frame (3) are provided with rotating blocks (16), and the bottom of the rotating blocks (16) is fixedly connected to the top of the rotating rod (11).

4. A screening device for processing coal according to claim 2, characterized in that: The surface of the rotating rod (11) is fitted with a bushing (17), and the bottom of the bushing (17) is fixedly connected to the top of the moving frame (3).

5. A screening device for processing coal according to claim 2, characterized in that: A support rod (18) is fixedly connected to the surface of the second bevel gear (13). The end of the support rod (18) away from the second bevel gear (13) is movably connected to the inner wall of the transmission groove (10) through a bearing.

6. A screening device for processing coal according to claim 1, characterized in that: A handle (19) is fixedly connected to the outside of the movable frame (3), and the handle (19) is used in conjunction with the movable frame (3).

7. A screening device for processing coal according to claim 1, characterized in that: The slider (9) has an opening (20) inside, and the width of the opening (20) is greater than the width of the sleeve (15).

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