Spiral classifier

Abstract

The utility model discloses a spiral classifier, which relates to the technical field of spiral classifiers and comprises a spiral classifier main body consisting of a classifying bin, a driving component, a rotating shaft and a spiral blade, a plurality of mounting holes penetrating to the other end of the spiral blade are formed in the end face of the spiral blade, and the mounting holes are uniformly formed along the spiral track of the spiral blade. And a plurality of wear-resistant assemblies are mounted on the outer side of the spiral blade through mounting holes. By arranging the wear-resistant assembly convenient to install, when the nut is loosened and the screw part of the fastening bolt is connected through the threaded groove, the screw part of the fastening bolt is not prone to being separated from the pre-connection cylinder, the inner side of the pre-connection cylinder is filled with the screw part of the fastening bolt, the pre-connection cylinder can not contract and deform, and therefore when the nut is loosened, the pre-connection cylinder can not be loosened. And the L-shaped wear-resistant sheet can be kept in a stable state, so that the operation safety of equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral classifiers, in particular to a spiral classifier. Background Art

[0002] Spiral classifier is one of the mineral processing equipment. It is often matched with ball mill to form closed-circuit circulation to divert ore sand. It is used in gravity mineral processing plants to separate ore sand and fine sand, as well as in metal beneficiation processes. It can classify the ore pulp by particle size, and perform desludging and dehydration operations in ore washing operations. The spiral classifier uses the principle that the different specific gravities of solid particles lead to different sedimentation rates in liquids to perform mechanical classification. It can filter the powder ground in the mill, then use the spiral vanes to rotate the coarse material into the mill feed port, and discharge the filtered fine material from the overflow pipe.

[0003] The wear-resistant sheet of spiral classifier is an important component of spiral classifier. It is usually installed on the spiral blade to protect the spiral blade and the trough, reduce wear and extend the service life of the equipment. The material of the wear-resistant sheet is usually made of polyurethane, rubber, ceramic and other wear-resistant materials. These materials have good wear resistance, corrosion resistance and impact resistance, and can effectively resist the wear and impact of ore and slurry.

[0004] The existing wear-resistant sheets are mostly fixed by bolt fastening. However, in actual operation, the bolts are prone to loosening. At this time, the limit between the wear-resistant sheet and the spiral blade is lost, resulting in the wear-resistant sheet loosening, falling, etc. This is not conducive to the stable operation of the spiral classifier. Based on this, a spiral classifier is provided. Utility Model Content

[0005] The purpose of the present invention is to provide a spiral classifier in order to solve the above-mentioned problems.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a spiral classifier, comprising a spiral classifier body consisting of a grading bin, a drive assembly, a rotating shaft, and a spiral blade, wherein the drive assembly is mounted on one end of the outside of the grading bin via a bracket, the rotating shaft is fixed to the output end of the drive assembly and extends to the inside of the grading bin, the spiral blade is fixed to the outside of the rotating shaft via a connecting arm and is located inside the grading bin, a mounting hole is provided on the end surface of the spiral blade extending to the other end of the spiral blade, a plurality of mounting holes are evenly distributed along the spiral trajectory of the spiral blade, and a plurality of wear-resistant components are mounted on the outside of the spiral blade through the mounting holes;

[0007] The wear-resistant assembly includes an L-shaped wear-resistant sheet, a T-shaped fastening hole, a pre-connected column, a limit block, and a shrinkage groove;

[0008] The T-shaped fastening hole is opened at one end of the vertical portion of the L-shaped wear-resistant plate and passes through the other end of the L-shaped wear-resistant plate. The pre-connecting column is fixed to the other end of the vertical portion of the L-shaped wear-resistant plate and is aligned with the T-shaped fastening hole. The limiting block is fixed to the end of the pre-connecting column away from the L-shaped wear-resistant plate. The shrinkage groove is opened at the end of the pre-connecting column away from the L-shaped wear-resistant plate and is staggered with the limiting block.

[0009] When the L-shaped wear-resistant sheet is sleeved on the outside of the spiral blade, the pre-connected cylinder passes through the mounting hole and the limiting block is attached to the other end face of the spiral blade to achieve preliminary limiting of the L-shaped wear-resistant sheet and the spiral blade.

[0010] As a further solution of the present invention: there are multiple limit blocks and contraction grooves, and the multiple limit blocks and contraction grooves are evenly staggered and distributed along the circumferential direction.

[0011] As a further solution of the present invention: the inner sides of the T-shaped fastening hole and the pre-connected cylinder are formed with thread grooves, and the thread grooves match the external threads of the screw portion of the fastening bolt.

[0012] As a further solution of the present invention: the outer diameter of the pre-connected cylinder matches the inner diameter of the mounting hole, and the inner diameters of the T-shaped fastening hole and the pre-connected cylinder match the outer diameter of the screw portion of the fastening bolt.

[0013] As a further solution of the present invention: the outer edge of the end of the limiting block away from the pre-connected column is a curved structure, and the end of the limiting block close to the pre-connected column is a straight structure.

[0014] As a further solution of the present invention: the L-shaped wear-resistant plate, T-shaped fastening hole, pre-connected cylinder, limiting block, shrinkage groove and thread groove are integrally formed by injection molding process.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By setting up a wear-resistant component that is easy to install, even if the nut becomes loose, the screw part of the fastening bolt is not easily separated from the pre-connected column through the connection of the thread groove. The screw part of the fastening bolt fills the inner side of the pre-connected column, which can prevent the pre-connected column from shrinking and deforming. In this way, when the nut becomes loose, the L-shaped wear-resistant sheet can also remain stable, thus ensuring the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly of the wear-resistant component and the spiral blade of the utility model;

[0019] Figure 3 This is a structural cross-sectional view of the wear-resistant component of the utility model.

[0020] In the figure: 1. Spiral classifier body; 101. Classifying chamber; 102. Drive assembly; 103. Rotating shaft; 104. Spiral blade; 105. Mounting hole; 2. Wear-resistant assembly; 201. L-shaped wear-resistant sheet; 202. T-shaped fastening hole; 203. Pre-connected column; 204. Limiting block; 205. Contraction groove; 206. Threaded groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 3 In an embodiment of the present invention, a spiral classifier includes a spiral classifier body 1 consisting of a grading bin 101, a driving assembly 102, a rotating shaft 103, and a spiral blade 104. The driving assembly 102 is mounted on one end of the outside of the grading bin 101 through a bracket. The rotating shaft 103 is fixed to the output end of the driving assembly 102 and extends to the inside of the grading bin 101. The spiral blade 104 is fixed to the outside of the rotating shaft 103 through a connecting arm and is located inside the grading bin 101. A mounting hole 105 is opened on the end surface of the spiral blade 104 to penetrate to the other end of the spiral blade 104. A plurality of mounting holes 105 are evenly opened along the spiral trajectory of the spiral blade 104. A plurality of wear-resistant components 2 are mounted on the outside of the spiral blade 104 through the mounting holes 105.

[0023] The wear-resistant assembly 2 includes an L-shaped wear-resistant sheet 201, a T-shaped fastening hole 202, a pre-connected column 203, a limiting block 204, and a shrinkage groove 205;

[0024] A T-shaped fastening hole 202 is provided at one end of the vertical portion of the L-shaped wear-resistant sheet 201 and extends through the other end of the L-shaped wear-resistant sheet 201. A pre-connecting column 203 is fixed to the other end of the vertical portion of the L-shaped wear-resistant sheet 201 and is aligned with the T-shaped fastening hole 202. A limiting block 204 is fixed to the end of the pre-connecting column 203 away from the L-shaped wear-resistant sheet 201. A contraction groove 205 is provided at the end of the pre-connecting column 203 away from the L-shaped wear-resistant sheet 201 and is staggered with the limiting block 204.

[0025] There are multiple limit blocks 204 and contraction grooves 205, and the multiple limit blocks 204 and contraction grooves 205 are evenly staggered and distributed along the circumferential direction;

[0026] When the L-shaped wear-resistant sheet 201 is sleeved on the outside of the spiral blade 104, the pre-connected cylinder 203 passes through the mounting hole 105, and the limiting block 204 is attached to the other end surface of the spiral blade 104 to achieve preliminary limiting of the L-shaped wear-resistant sheet 201 and the spiral blade 104;

[0027] The inner sides of the T-shaped fastening hole 202 and the pre-connected cylinder 203 are formed with a thread groove 206, which matches the external thread of the screw portion of the fastening bolt;

[0028] The outer diameter of the pre-connected column 203 matches the inner diameter of the mounting hole 105 , and the inner diameters of the T-shaped fastening hole 202 and the pre-connected column 203 match the outer diameter of the screw portion of the fastening bolt.

[0029] In this embodiment, when the wear-resistant component 2 is installed with the spiral blade 104, the operation steps are as follows:

[0030] The L-shaped wear-resistant sheet 201 is attached to the outer side of the spiral blade 104, and the plurality of limiting blocks 204 are aligned with the mounting holes 105. As the limiting blocks 204 contact the mounting holes 105, the plurality of limiting blocks 204 are subjected to the squeezing force from the mounting holes 105. This squeezing force is transmitted to the pre-connected column 203, causing the pre-connected column 203 to deform and shrink along the shrinkage groove 205. In this way, the plurality of limiting blocks 204 shrink their distributed outer diameters to match the mounting holes 105, so that the limiting blocks 204 can smoothly pass through the mounting holes 105.

[0031] The limiting block 204 passing through the mounting hole 105 loses the external extrusion force. At this time, the pre-connecting column 203 is reset under the action of its own elastic force, so that the multiple limiting blocks 204 are distributed outwardly with an outer diameter larger than the mounting hole 105, thereby achieving the initial connection and limiting of the L-shaped wear-resistant sheet 201 and the spiral blade 104;

[0032] After that, the external fastening bolt is inserted into the T-shaped fastening hole 202 and screwed into the thread groove 206. Finally, the screw portion of the fastening bolt passes through and protrudes to the other end of the pre-connected cylinder 203. At this time, the nut is screwed into the screw portion of the fastening bolt and tightened so that the nut fits tightly with the limiting block 204. In this way, the L-shaped wear-resistant plate 201 is fixed and reinforced.

[0033] Among them, the structure of the limit block 204 fitting tightly with the nut can provide anti-loosening resistance to the nut, so that the nut and the fastening bolt can maintain a better stable state. Even if the nut is loose, the screw part of the fastening bolt is not easy to separate from the pre-connected column 203 through the connection of the thread groove 206, and the screw part of the fastening bolt fills the inner side of the pre-connected column 203, which can prevent the pre-connected column 203 from shrinking and deforming. In this way, when the nut is loose, the L-shaped wear-resistant plate 201 can also maintain a stable state, thus ensuring the safe operation of the equipment. It should be noted that during daily use of the spiral classifier, the looseness of the fastening bolts will be checked regularly, and the nuts will be maintained and tightened after being found to be loose.

[0034] Please refer to Figures 1 to 3 The outer edge of one end of the limiting block 204 away from the pre-connected column 203 is an arc structure, and the end of the limiting block 204 close to the pre-connected column 203 is a straight structure.

[0035] In this embodiment: the arc surface structure of the limit block 204 can better withstand the force of contraction and deformation when inserted into the mounting hole 105, while the straight surface structure can keep the clamping state of the limit block 204 stable. When the L-shaped wear-resistant plate 201 needs to be replaced, the limit block 204 can be manually squeezed, contracted or cut off by external tools.

[0036] Please refer to Figures 1 to 3 The L-shaped wear-resistant sheet 201, the T-shaped fastening hole 202, the pre-connected cylinder 203, the limiting block 204, the shrinkage groove 205, and the thread groove 206 are integrally formed by an injection molding process.

[0037] In this embodiment, the wear-resistant component 2 is integrally formed by using polyurethane and rubber through an injection molding process, which facilitates standardized production, processing, and promotion.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spiral classifier, comprising a spiral classifier body (1) consisting of a grading bin (101), a drive assembly (102), a rotating shaft (103), and spiral blades (104), wherein the drive assembly (102) is mounted on one end of the outside of the grading bin (101) through a bracket, the rotating shaft (103) is fixed to the output end of the drive assembly (102) and extends to the inside of the grading bin (101), and the spiral blades (104) are fixed to the outside of the rotating shaft (103) through a connecting arm and are located inside the grading bin (101), characterized in that: The end surface of the spiral blade (104) is provided with a mounting hole (105) extending through the other end of the spiral blade (104), a plurality of the mounting holes (105) are evenly provided along the spiral trajectory of the spiral blade (104), and a plurality of wear-resistant components (2) are mounted on the outer side of the spiral blade (104) through the mounting holes (105); The wear-resistant assembly (2) comprises an L-shaped wear-resistant sheet (201), a T-shaped fastening hole (202), a pre-connected column (203), a limiting block (204), and a shrinkage groove (205); The T-shaped fastening hole (202) is opened at one end of the vertical portion of the L-shaped wear-resistant plate (201) and passes through the other end of the L-shaped wear-resistant plate (201); the pre-connecting column (203) is fixed to the other end of the vertical portion of the L-shaped wear-resistant plate (201) and is aligned with the T-shaped fastening hole (202); the limiting block (204) is fixed to the end of the pre-connecting column (203) away from the L-shaped wear-resistant plate (201); the shrinkage groove (205) is opened at the end of the pre-connecting column (203) away from the L-shaped wear-resistant plate (201) and is staggered with the limiting block (204); When the L-shaped wear-resistant sheet (201) is sleeved on the outside of the spiral blade (104), the pre-connected cylinder (203) passes through the mounting hole (105), and the limiting block (204) is attached to the other end surface of the spiral blade (104), so as to achieve preliminary limiting of the L-shaped wear-resistant sheet (201) and the spiral blade (104).

2. A spiral classifier according to claim 1, characterized in that: The number of the limiting blocks (204) and the shrinkage grooves (205) is multiple, and the multiple limiting blocks (204) and the shrinkage grooves (205) are evenly staggered and distributed along the circumferential direction.

3. A spiral classifier according to claim 1, characterized in that: The inner sides of the T-shaped fastening hole (202) and the pre-connected cylinder (203) are formed with a thread groove (206), and the thread groove (206) matches the external thread of the screw portion of the fastening bolt.

4. A spiral classifier according to claim 1, characterized in that: The outer diameter of the pre-connected column (203) matches the inner diameter of the mounting hole (105), and the inner diameters of the T-shaped fastening hole (202) and the pre-connected column (203) match the outer diameter of the screw portion of the fastening bolt.

5. The spiral classifier according to claim 1, characterized in that: The outer edge of one end of the limiting block (204) away from the pre-connected column (203) is in a curved surface structure, and the end of the limiting block (204) close to the pre-connected column (203) is in a straight surface structure.

6. The spiral classifier according to claim 1, characterized in that: The L-shaped wear-resistant sheet (201), the T-shaped fastening hole (202), the pre-connected column (203), the limiting block (204), the shrinkage groove (205), and the thread groove (206) are integrally formed by an injection molding process.

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