Rapid replacement device for screen basket of centrifugal machine for coal preparation plant

Abstract

The utility model discloses a rapid replacement device for a screen basket of a centrifugal machine for a coal preparation plant, and relates to the technical field of screen baskets of coal mines, in particular to the rapid replacement device for the screen basket of the centrifugal machine for the coal preparation plant, which comprises an upper flange plate, an upper screen mesh and a lower screen mesh, an assembling mechanism is arranged on the upper flange plate and used for rapid replacement in the dismounting and mounting process of the upper screen and the lower screen, the assembling mechanism comprises a supporting assembly, the supporting assembly comprises four supporting frames which are installed at the bottom of the upper flange plate and distributed in the circumferential direction, and the upper screen and the lower screen are installed between the adjacent supporting frames; longitudinal grooves are formed in the left end and the right end of the supporting frame and matched with the two ends of the upper screen mesh and the two ends of the lower screen mesh respectively, and a first groove is formed in the lower end of the supporting frame. By means of the design, the maintenance complexity is increased, and the cost is remarkably increased.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine screening baskets, in particular to a quick replacement device for a centrifuge screening basket used in a coal preparation plant. Background Art

[0002] As one of the series of processes for coal mine screening, the process of raw coal dehydration is essential. Raw coal dehydration is an operation process that realizes liquid-solid separation by means of a centrifugal force field. Its main equipment is a horizontal vibrating discharge centrifuge, which is mainly used for coal product dehydration. The advantages of centrifugal dehydration technology are low equipment investment, high production capacity, good dehydration effect, low power consumption, and small floor area. Therefore, horizontal vibrating discharge centrifuges are widely used in the coal industry. Currently, the common horizontal vibrating discharge centrifuges mainly use screening baskets to achieve coal dehydration.

[0003] Upon inquiry, the publication (announcement) number: CN220425626U discloses a mine centrifuge screening basket. In this technology, "a mine centrifuge screening basket, belonging to the technical field of coal mine screening baskets, includes a first screening basket. A second screening basket is arranged outside the first screening basket. Screws are threadedly connected to the second screening basket. The first screening basket and the second screening basket are connected by the screws. A scraping rod is arranged inside the first screening basket, and a moving component is arranged on the first screening basket" and other technical solutions, and has technical effects such as "solving the problem that the existing mine centrifuge screening basket usually uses a single screening basket for centrifugal dehydration of raw coal, which is not convenient to avoid coal screening during centrifugation due to damage to the screening mesh of the screening basket, easily causes coal waste, and some raw coal blocks will block the pores of the screening mesh of the screening basket, reducing the efficiency of raw coal dehydration and greatly reducing the practicability".

[0004] During the continuous operation of the coal mine centrifuge screening basket, once damage is found in the screening mesh, it must be repaired quickly to avoid affecting production efficiency. However, the existing screening basket designs are integrally formed, which means that once the screening mesh is damaged, it is often necessary to replace the entire screening mesh in the screening basket. Such a design not only increases the complexity of maintenance but also leads to a significant increase in costs. Because the replacement of the entire screening mesh involves more material consumption and longer maintenance time, thus increasing the operating costs of the enterprise. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a quick replacement device for a centrifuge screening basket used in a coal preparation plant, which has the characteristics that the screening mesh can be quickly disassembled and replaced, and the overall strength is ensured after forming the screening basket.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A quick replacement device for a centrifuge screening basket used in a coal preparation plant, including an upper flange, an upper screening mesh, and a lower screening mesh. An assembly mechanism is arranged on the upper flange and is used for quick replacement during the disassembly and assembly of the upper screening mesh and the lower screening mesh. The assembly mechanism includes:

[0007] The support assembly includes four support frames circumferentially distributed at the bottom of the upper flange, and an upper screen and a lower screen are installed between adjacent support frames. Longitudinal grooves are formed at both the left and right ends of the support frame and are respectively matched with the two ends of the upper screen and the lower screen. A first groove is formed at the lower end of the support frame, and a first threaded hole is formed in the middle of the outer wall of the support frame.

[0008] The positioning assembly includes a positioning frame installed between adjacent support frames. Transverse grooves are formed at both the upper and lower ends of the positioning frame and are respectively matched with the lower end of the upper screen and the upper end of the lower screen. Second threaded holes are formed on both sides of the outer wall of the positioning assembly.

[0009] The fixing assembly includes a lower flange installed between the bottoms of the four support frames, and a fixing ring installed between the lower ends of the four support frames.

[0010] The reinforcement assembly is arranged on the support assembly and is used to reinforce between the support assembly and the positioning assembly.

[0011] Preferably, the fixing assembly further includes four screw rods circumferentially distributed and hinged to the outer wall of the lower flange, and nuts are threadedly installed on the screw rods. Four second grooves are circumferentially formed on the outer wall of the fixing ring.

[0012] Preferably, the fixing assembly further includes a rubber ring fixed at the inner edge of the top of the lower flange.

[0013] Preferably, the reinforcement assembly includes a reinforcement frame installed in the middle of the front end of the support frame. A first round hole is formed in the middle of the interior of the reinforcement frame and is matched with the first threaded hole. Second round holes are formed on both sides of the interior of the reinforcement frame and are matched with the second threaded holes.

[0014] Preferably, the shape of the reinforcement frame is an arc structure.

[0015] Preferably, the support assembly further includes mounting holes formed at the upper ends of the support frames.

[0016] Beneficial effects

[0017] The utility model provides a device for quickly replacing the centrifuge screen basket in a coal preparation plant. Compared with the prior art, the following beneficial effects are achieved:

[0018] (1) Rotate and loosen the nut, and turn the screw rod outwards to disengage from the first groove and the second groove, releasing the fixation of the fixing ring, so that the fixing ring can be separated and removed, and the lower flange can also be separated and removed, so that the lower screen, the positioning assembly and the upper screen can be respectively taken out from between adjacent support assemblies, realizing the quick disassembly of the lower screen and the upper screen.

[0019] (2) The reinforcing frame is fixed on the first threaded hole of the support frame through the first round hole and bolts, and the reinforcing frame is further fixed to the second threaded hole on the positioning frame through the second round hole and bolts, thereby fixing the support frame and the adjacent positioning frame, and improving the overall strength of the sieve basket. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 It is a structural schematic diagram of the positioning component in the present utility model;

[0022] Figure 3 It is a structural schematic diagram of the support component and the reinforcement component in the present utility model;

[0023] Figure 4 It is a split structural schematic diagram of the fixing component in the present utility model.

[0024] In the figure: 1. Upper flange; 2. Assembly mechanism; 21. Support component; 211. Support frame; 212. Longitudinal groove; 213. First groove; 214. First threaded hole; 215. Mounting hole; 22. Positioning component; 221. Positioning frame; 222. Transverse groove; 223. Second threaded hole; 23. Fixing component; 231. Lower flange; 232. Screw rod; 233. Nut; 234. Fixed ring; 235. Second groove; 236. Rubber ring; 24. Reinforcement component; 241. Reinforcing frame; 242. First round hole; 243. Second round hole; 3. Upper sieve mesh; 4. Lower sieve mesh. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4 , the present utility model provides a technical solution for a rapid replacement device for a centrifuge sieve basket in a coal preparation plant: A rapid replacement device for a centrifuge sieve basket in a coal preparation plant includes an upper flange 1, an upper sieve mesh 3, and a lower sieve mesh 4. An assembly mechanism 2 is provided on the upper flange 1 and is used for rapid replacement during the disassembly and assembly of the upper sieve mesh 3 and the lower sieve mesh 4. The assembly mechanism 2 includes:

[0027] The support assembly 21 includes four support frames 211 that are circumferentially distributed and installed at the bottom of the upper flange 1. An upper screen 3 and a lower screen 4 are installed between adjacent support frames 211. Longitudinal grooves 212 are provided at both the left and right ends of the support frame 211 and are respectively matched with the two ends of the upper screen 3 and the lower screen 4. A first groove 213 is provided at the lower end of the support frame 211, and a first threaded hole 214 is provided in the middle of the outer wall of the support frame 211.

[0028] The positioning assembly 22 includes a positioning frame 221 installed between adjacent support frames 211. Transverse grooves 222 are provided at both the upper and lower ends of the positioning frame 221 and are respectively matched with the lower end of the upper screen 3 and the upper end of the lower screen 4. Second threaded holes 223 are provided on both sides of the outer wall of the positioning assembly 22.

[0029] The fixing assembly 23 includes a lower flange 231 installed between the bottoms of the four support frames 211, and a fixing ring 234 installed between the lower ends of the four support frames 211.

[0030] The reinforcement assembly 24 is arranged on the support assembly 21 and is used to reinforce between the support assembly 21 and the positioning assembly 22.

[0031] In this embodiment, by rotating and loosening the nut 233 and turning the screw 232 outwards to disengage from the first groove 213 and the second groove 235, the fixing of the fixing ring 234 is released, so that the fixing ring 234 can be separated and removed, and the lower flange 231 can also be separated and removed, so that the lower screen 4, the positioning assembly 22 and the upper screen 3 can be respectively taken out from between adjacent support assemblies 21, realizing the quick disassembly of the lower screen 4 and the upper screen 3.

[0032] Specifically, the fixing assembly 23 further includes four screws 232 that are circumferentially distributed and hinged to the outer wall of the lower flange 231, and nuts 233 are threadedly installed on the screws 232. Four second grooves 235 are provided on the outer wall of the fixing ring 234 in a circumferential distribution.

[0033] In this embodiment, by sequentially installing each upper screen 3, the positioning assembly 22 and the lower screen 4 between adjacent support assemblies 21, sleeving the fixing ring 234 on the whole, aligning the second groove 235 on the fixing ring 234 with the first groove 213 on the support frame 211, and then turning the screw 232 upwards, so that the lower flange 231 rotates into the inside of the first groove 213 and the second groove 235, and tightening the nut 233 to press down the fixing ring 234, thereby fixing the fixing ring 234, the support frame 211 and the lower flange 231 together, and also fixing the upper screen 3, the positioning assembly 22 and the lower screen 4 in adjacent support assemblies 21, thus forming a complete sieve basket.

[0034] Specifically, the fixing component 23 further includes a rubber ring 236 fixed at the inner edge of the top of the lower flange 231.

[0035] In this embodiment, the lower flange 231 is attached to the bottom of the lower screen 4 through the rubber ring 236, which improves the sealing performance and can also buffer during vibration.

[0036] Specifically, the reinforcement component 24 includes a reinforcement frame 241 installed in the middle of the front end of the support frame 211. A first round hole 242 is opened in the middle of the inside of the reinforcement frame 241 and is matched with the first threaded hole 214. Second round holes 243 are opened on both sides of the inside of the reinforcement frame 241 and are matched with the second threaded holes 223.

[0037] In this embodiment, the reinforcement frame 241 can be fixed to the first threaded hole 214 of the support frame 211 through the first round hole 242 with bolts. Moreover, the reinforcement frame 241 is further fixed to the second threaded hole 223 on the positioning frame 221 through the second round hole 243 with bolts, thereby fixing the support frame 211 and the adjacent positioning frame 221 to improve the overall strength of the sieve basket.

[0038] Specifically, the shape of the reinforcement frame 241 is an arc structure.

[0039] In this embodiment, the reinforcement frame 241 can be completely attached to the support frame 211 and the positioning frame 221.

[0040] Specifically, the support component 21 further includes a mounting hole 215 opened at the upper end of the support frame 211.

[0041] In this embodiment, the support frame 211 can be fixed to the upper flange 1 through the mounting hole 215 with bolts, or they can also be directly welded and fixed.

[0042] The working principle and usage process of the present utility model: First, when the upper screen 3 or the lower screen 4 is damaged, the entire sieve basket is first removed from the centrifuge. Then, the nut 233 is rotated and loosened, and the screw rod 232 is turned outwards to disengage from the first groove 213 and the second groove 235, releasing the fixation of the fixing ring 234, so that the fixing ring 234 can be separated and removed, and the lower flange 231 is also separated and removed, enabling the lower screen 4, the positioning component 22, and the upper screen 3 to be respectively taken out from between the adjacent support components 21, realizing the quick disassembly of the lower screen 4 and the upper screen 3;

[0043] When installing the new upper sieve 3 or lower sieve 4, install each upper sieve 3, positioning component 22 and lower sieve 4 in sequence between adjacent support components 21. Slip the fixing ring 234 over the whole, align the second groove 235 on the fixing ring 234 with the first groove 213 on the support frame 211, then turn the screw 232 upwards so that the lower flange 231 rotates into the interior of the first groove 213 and the second groove 235, and tighten the nut 233 to press down the fixing ring 234, thereby fixing the fixing ring 234, support frame 211 and lower flange 231 together, and also fixing the upper sieve 3, positioning component 22 and lower sieve 4 in the adjacent support components 21, thus forming a complete sieve basket;

[0044] Finally, fix the reinforcement frame 241 to the first threaded hole 214 of the support frame 211 by means of the first round hole 242 and a bolt, and further fix the reinforcement frame 241 to the second threaded hole 223 on the positioning frame 221 by means of the second round hole 243 and a bolt, thereby fixing the support frame 211 and the adjacent positioning frame 221 to improve the overall strength of the sieve basket.

[0045] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0046] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid replacement device for a centrifuge screen basket used in a coal preparation plant, comprising an upper flange (1), an upper screen (3) and a lower screen (4), characterized in that: An assembly mechanism (2) is provided on the upper flange (1) and is used for quickly replacing the upper screen (3) and the lower screen (4) during the disassembly and assembly process. The assembly mechanism (2) includes: A support component (21), including four support frames (211) distributed circumferentially at the bottom of the upper flange (1). The upper screen (3) and the lower screen (4) are installed between adjacent support frames (211). Longitudinal grooves (212) are respectively opened at the left and right ends of the support frame (211) and are respectively matched with the two ends of the upper screen (3) and the lower screen (4). A first groove (213) is opened at the lower end of the support frame (211), and a first threaded hole (214) is opened in the middle of the outer wall of the support frame (211); A positioning component (22), including a positioning frame (221) installed between adjacent support frames (211). Transverse grooves (222) are respectively opened at the upper and lower ends of the positioning frame (221) and are respectively matched with the lower end of the upper screen (3) and the upper end of the lower screen (4). Second threaded holes (223) are respectively opened on both sides of the outer wall of the positioning component (22); A fixing component (23), including a lower flange (231) installed between the bottoms of the four support frames (211), and a fixing ring (234) installed between the lower ends of the four support frames (211); A reinforcement component (24), provided on the support component (21) and used for reinforcing between the support component (21) and the positioning component (22).

2. The rapid replacement device for the centrifuge screen basket used in a coal preparation plant according to claim 1, wherein: The fixing component (23) further includes four screws (232) distributed circumferentially and hinged to the outer wall of the lower flange (231), and nuts (233) are threadedly installed on the screws (232). Four second grooves (235) are opened on the outer wall of the fixing ring (234).

3. The rapid replacement device for the centrifuge screen basket used in a coal preparation plant according to claim 2, wherein: The fixing component (23) further includes a rubber ring (236) fixed to the inner edge of the top of the lower flange (231).

4. A rapid replacement device for a centrifuge sieve basket used in a coal preparation plant according to claim 1, characterized in that: The reinforcement component (24) includes a reinforcement frame (241) installed in the middle of the front end of the support frame (211). A first round hole (242) is opened in the middle of the interior of the reinforcement frame (241) and is matched with the first threaded hole (214). Second round holes (243) are respectively opened on both sides of the interior of the reinforcement frame (241) and are matched with the second threaded holes (223).

5. A rapid replacement device for a centrifuge sieve basket used in a coal preparation plant according to claim 4, characterized in that: The shape of the reinforcement frame (241) is an arc structure.

6. The rapid replacement device for the centrifuge screen basket used in a coal preparation plant according to claim 4, characterized in that: The support component (21) further includes a mounting hole (215) opened at the upper end of the support frame (211).

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