Optimized and improved structure of polyurethane punching sieve plate for clean coal sieve

Abstract

The utility model discloses an optimized and improved structure of a polyurethane punching sieve plate for a clean coal sieve, which belongs to the technical field of polyurethane sieve plates and comprises an outer frame, a polyurethane punching sieve plate is fixedly mounted on the inner side of the outer frame, and a plurality of uniformly distributed filtering punched holes are formed in the polyurethane punching sieve plate in a penetrating manner; a plurality of steel wires which are distributed in a criss-cross manner and are supported at the bottom of the polyurethane punching sieve plate are fixed on the inner side of the outer frame in a penetrating manner, a screw tube through which the steel wires penetrate is fixed on the outer side of the outer frame, and an adjusting screw sleeve is assembled on the screw tube through threads; the two ends of the steel wire are clamped into an inner cavity of the adjusting thread sleeve all the time through the steel balls, and the steel wire can be continuously stretched to be in a tightened state by rotating the adjusting thread sleeve outwards. According to the structure, the crisscrossed steel wires are additionally arranged on the inner side of the main frame to support the polyurethane punching sieve plate, so that the impact force of coal flow resistance of the polyurethane punching sieve plate can be greatly enhanced, the stability of the polyurethane punching sieve plate is improved, and deformation of the polyurethane punching sieve plate can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane sieve plates, in particular to an optimized and modified structure of a polyurethane punching sieve plate used for a clean coal screen. Background Art

[0002] Mining polyurethane screen plate is a mesh product made of polyurethane as raw material. Its hole shapes include slits, rectangles, circles, squares, etc. It is mainly used in vibrating screen equipment in coal washing plants, coking plants, mines, power plants, dredging companies, metallurgy, petroleum, petrochemical and other enterprises.

[0003] When screening coal blocks, traditional clean coal polyurethane screen plates are easily damaged by the impact of large coal blocks. Due to insufficient bottom support, the polyurethane screen plates are deformed, which shortens their service life and increases the cost of subsequent maintenance or replacement of the polyurethane screen plates. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an optimized and modified structure of a polyurethane perforated sieve plate for clean coal screening. The structure can greatly enhance the polyurethane perforated sieve plate's resistance to the impact of coal flow by adding criss-cross steel wires to the inner side of the main frame to support the polyurethane perforated sieve plate, thereby improving the stability of the polyurethane perforated sieve plate and effectively preventing the polyurethane perforated sieve plate from deformation.

[0005] In order to solve the above technical problems, the technical solution of the utility model is achieved as follows:

[0006] Disclosed is an optimized and modified structure of a polyurethane perforated screen plate for clean coal screening, comprising an outer frame, a polyurethane perforated screen plate being detachably fixedly mounted on the inner side of the outer frame, the polyurethane perforated screen plate being penetrated by a plurality of evenly distributed filtering holes; a plurality of steel wires being crisscrossed and supported on the bottom of the polyurethane perforated screen plate being penetrated by a plurality of fixed steel wires ...

[0007] By adopting the above scheme, the structure can greatly strengthen the polyurethane perforated sieve plate against the impact of coal flow by adding criss-cross steel wires to the inner side of the main frame to support the polyurethane perforated sieve plate, thereby improving the stability of the polyurethane perforated sieve plate and effectively preventing the polyurethane perforated sieve plate from deformation.

[0008] As a preferred embodiment of the optimized and modified structure of the polyurethane punching screen plate for clean coal screen, the contact surface between the steel ball and the inner cavity of the adjusting screw sleeve is filled with lubricating oil, such as butter.

[0009] By adopting the above solution, in order to reduce the friction between the adjusting screw sleeve and the steel ball during rotation, lubricating oil is filled in the two brackets, which will save more effort when rotating the adjusting screw sleeve.

[0010] As a preferred implementation method of the optimized transformation structure of the polyurethane perforated screen plate for clean coal screening, two symmetrical turning handles are welded and fixed on the outer side wall of the adjusting screw sleeve.

[0011] With the above solution, in order to further facilitate the rotation of the adjusting screw sleeve, a turning handle is added on the outside thereof, and the user can hold the turning handle to rotate it, which is more convenient to use.

[0012] As a preferred embodiment of the optimized transformation structure of the polyurethane punching screen plate for clean coal screen, the spiral tube is also assembled with a nut through a thread, and the adjusting screw sleeve can be completely locked by rotating the nut to resist the adjusting screw sleeve.

[0013] By adopting the above solution, in order to further lock the adjusting screw sleeve, a nut is added to abut the adjusting screw sleeve. After the position of the adjusting screw sleeve is adjusted, the adjusting screw sleeve can be completely locked by rotating the nut to abut the adjusting screw sleeve.

[0014] As a preferred embodiment of the optimized and modified structure of a polyurethane perforated screen plate for clean coal screening, the lower surface of the polyurethane perforated screen plate is provided with crisscross limiting grooves, and the steel wires are located in the limiting grooves.

[0015] By adopting the above scheme, in order to further stabilize the polyurethane perforated sieve plate, when the steel wire is located in the limiting groove, the polyurethane perforated sieve plate is not easy to shake, which can improve the stability and reliability of the polyurethane perforated sieve plate.

[0016] As a preferred embodiment of the optimized and modified structure of the polyurethane perforated screen plate for clean coal screening, the polyurethane perforated screen plate is disassembled and fixed by four clamps installed above it; a plurality of plug-ins distributed in a linear array are welded and fixed to the side wall of the clamp, and a plurality of slots for use with the plug-ins are provided on the inner side wall of the outer frame; the plug-ins can be inserted into the slots; a plurality of countersunk holes distributed in a linear array are also provided through the clamp, and a screw hole one for use with the countersunk hole is provided on the polyurethane perforated screen plate; when the plug-in block is inserted into the slot, the countersunk hole and the screw hole one correspond to each other up and down, and it is fixed by installing screws in the countersunk hole and the screw hole one.

[0017] By adopting the above scheme, in order to facilitate the disassembly of the polyurethane perforated sieve plate, a clamping plate is used to detachably fix the polyurethane perforated sieve plate, thereby facilitating the later replacement of the polyurethane perforated sieve plate.

[0018] As a preferred embodiment of the optimized and modified structure of the polyurethane perforated screen plate for clean coal screening, a flange is welded and fixed to one end of the spiral tube, and multiple screw holes 2 are provided on the flange, which are fixed by installing screws in the screw holes 2.

[0019] With the above solution, in order to facilitate the disassembly and assembly of the spiral tube, it is fixed with screws, so that when it is damaged, it is convenient to disassemble and replace it later.

[0020] After adopting the above technical solution, the beneficial effects of the utility model are:

[0021] 1. This structure can greatly enhance the ability of the polyurethane perforated screen plate to resist the impact of coal flow by installing crisscross steel wires on the inner side of the main frame, thereby improving the stability of the polyurethane perforated screen plate and effectively preventing the polyurethane perforated screen plate from deformation;

[0022] 2. In order to reduce the friction between the adjusting screw sleeve and the steel ball during rotation, fill the two brackets with lubricating oil, which will save effort when rotating the adjusting screw sleeve;

[0023] 3. In order to further facilitate the rotation of the adjusting screw sleeve, a turning handle is added on its outside. When rotating, just hold the turning handle and rotate it, which is more convenient when using;

[0024] 4. In order to further lock the adjusting screw sleeve, add a nut to abut the adjusting screw sleeve. After the position of the adjusting screw sleeve is adjusted, the adjusting screw sleeve can be completely locked by rotating the nut to abut the adjusting screw sleeve.

[0025] 5. In order to further stabilize the polyurethane perforated screen plate, when the steel wire is located in the limit groove, the polyurethane perforated screen plate is not easy to shake, which can improve the stability and reliability of the polyurethane perforated screen plate;

[0026] 6. In order to facilitate the disassembly of the polyurethane punching screen plate, a clamping plate is used to detachably fix the polyurethane punching screen plate, so as to facilitate the replacement of the polyurethane punching screen plate in the later stage;

[0027] 7. In order to facilitate the disassembly and assembly of the spiral tube, it is fixed with screws. When it is damaged, it is easy to disassemble and replace it later. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 The three-dimensional structure of the utility model Figure 1 ;

[0030] Figure 2 The three-dimensional structure of the utility model Figure 2 ;

[0031] Figure 3 To hide Figure 1 Three-dimensional structure diagram behind the middle pallet;

[0032] Figure 4 for Figure 3 The three-dimensional structure of the polyurethane punching screen plate Figure 1 ;

[0033] Figure 5 for Figure 3 The three-dimensional structure of the polyurethane punching screen plate Figure 2 ;

[0034] Figure 6 To hide Figure 4 The three-dimensional structure diagram of the polyurethane punching screen plate;

[0035] Figure 7 For display Figure 6 Internal three-dimensional structure diagram;

[0036] Figure 8 for Figure 2 A partial enlarged view of point 7 in the middle;

[0037] Figure 9 for Figure 8 A three-dimensional structural diagram of the middle spiral tube assembly;

[0038] Figure 10 for Figure 1 Three-dimensional structure diagram of the middle pallet.

[0039] Markings in the figure: 1-outer frame; 2-polyurethane perforated screen plate; 3-filter punching hole; 4-steel wire; 5-screw tube; 6-adjusting screw sleeve; 7-steel ball; 8-handle; 9-nut; 10-limiting groove; 11-clamping plate; 12-insert block; 13-slot; 14-countersunk hole; 15-screw hole 1; 16-flange; 17-screw hole 2. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figures 1 to 9As shown, an optimized and modified structure of a polyurethane perforated screen plate for clean coal screening is used for screening clean coal, and includes an outer frame 1. A polyurethane perforated screen plate 2 is detachably fixedly installed on the inner side of the outer frame 1, and the polyurethane perforated screen plate 2 is penetrated by a plurality of evenly distributed filtering punching holes 3; a plurality of steel wires 4 that are crisscrossed and supported on the bottom of the polyurethane perforated screen plate 2 are fixed through the inner side of the outer frame 1, and a spiral tube 5 that penetrates the steel wire 4 inside is detachably fixed on the outer side of the outer frame 1, and an adjusting screw sleeve 6 is assembled on the screw sleeve 5 through a thread; the two ends of the steel wire 4 are always clamped in the inner cavity of the adjusting screw sleeve 6 by steel balls 7 respectively, and the steel wire 4 can be continuously stretched to a taut state by rotating the adjusting screw sleeve 6 outward. This structure can greatly strengthen the polyurethane perforated sieve plate 2 against the impact of coal flow by adding crisscross steel wires 4 to the inner side of the main frame to support the polyurethane perforated sieve plate 2, thereby improving the stability of the polyurethane perforated sieve plate 2 and effectively preventing the polyurethane perforated sieve plate 2 from deformation.

[0042] like Figure 8 As shown, the contact surface between the steel ball 7 and the inner cavity of the adjusting screw sleeve 6 is filled with lubricating oil, such as butter, etc. In order to reduce the friction between the adjusting screw sleeve 6 and the steel ball 7 when rotating, the two brackets are filled with lubricating oil, which can save more effort when rotating the adjusting screw sleeve 6.

[0043] like Figures 8 and 9 As shown, two mutually symmetrical turning handles 8 are welded and fixed on the outer side wall of the adjusting screw sleeve 6. In order to further facilitate the rotation of the adjusting screw sleeve 6, a turning handle 8 is additionally provided on its outer side, and the turning handle 8 is rotated by hand during rotation, which is more convenient in use.

[0044] like Figures 8 and 9 As shown, the screw tube 5 is also threadedly assembled with a nut 9, and the adjusting screw sleeve 6 can be completely locked by rotating the nut 9 against the adjusting screw sleeve 6. In order to further lock the adjusting screw sleeve 6, an additional nut 9 is added to abut the adjusting screw sleeve 6. After the position of the adjusting screw sleeve 6 is adjusted, the adjusting screw sleeve 6 can be completely locked by rotating the nut 9 against the adjusting screw sleeve 6.

[0045] like Figure 5 As shown, the lower surface of the polyurethane perforated screen plate 2 is provided with crisscross limiting grooves 10, and the steel wires 4 are located in the limiting grooves 10. In order to further stabilize the polyurethane perforated screen plate 2, when the steel wires 4 are located in the limiting grooves 10, the polyurethane perforated screen plate 2 is not easy to shake, which can improve the stability and reliability of the polyurethane perforated screen plate 2.

[0046] like Figures 3 and 4 、 Figure 10As shown, the polyurethane perforated screen plate 2 is fixed and disassembled by means of four clamping plates 11 installed above it; a plurality of plug-in blocks 12 distributed in a linear array are welded and fixed to the side wall of the clamping plate 11, and a plurality of slots 13 for use with the plug-in blocks 12 are provided on the inner side wall of the outer frame 1; the plug-in blocks 12 can be inserted into the slots 13; a plurality of countersunk holes 14 distributed in a linear array are also provided through the clamping plate 11, and a screw hole 15 for use with the countersunk hole 14 is provided on the polyurethane perforated screen plate 2; when the plug-in blocks 12 are inserted into the slots 13, the countersunk holes 14 and the screw hole 15 correspond to each other up and down, and the polyurethane perforated screen plate 2 is fixed by screws installed in the countersunk holes 14 and the screw hole 15. In order to facilitate the disassembly of the polyurethane perforated screen plate 2, the clamping plate 11 is used to detachably fix the polyurethane perforated screen plate, thereby facilitating the replacement of the polyurethane perforated screen plate later.

[0047] like Figure 9 As shown, one end of the spiral tube 5 is welded and fixed with a flange 16, and a plurality of screw holes 17 are provided on the flange 16, which are fixed by installing screws in the screw holes 17. In order to facilitate the disassembly and assembly of the spiral tube 5, it is fixed with screws, and when it is damaged, it is convenient to disassemble and replace it later.

[0048] The working principle of this utility model:

[0049] Before use, the polyurethane perforated sieve plate 2 is placed on the crisscross steel wires 4, and then the plug 12 of the clamping plate 11 is inserted into the slot 13. At this time, the countersunk hole 14 corresponds to the screw hole 15 up and down, and then the screws are installed in the countersunk hole 14 and the screw hole 15 to fix it; this structure supports the polyurethane perforated sieve plate 2 by adding crisscross steel wires 4 on the inner side of the main frame, which can greatly enhance the polyurethane perforated sieve plate 2 to resist the impact force of the coal flow, thereby improving the stability of the polyurethane perforated sieve plate 2 and effectively preventing the polyurethane perforated sieve plate 2 from deformation.

[0050] During application, with long-term use, the clean coal will continuously impact the polyurethane perforated screen plate 2, causing the steel wire 4 to become loose. At this time, the steel wire 4 can be stretched and tightened by adjusting the screw sleeve 6 until the steel wire 4 is stretched to a taut state. After the position of the adjusting screw sleeve 6 is adjusted, the adjusting screw sleeve 6 can be completely locked by rotating the nut 9 against the adjusting screw sleeve 6, and the tautness of the steel wire 4 can be restored.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polyurethane perforated screen plate optimization and transformation structure for clean coal screening, comprising an outer frame (1), a polyurethane perforated screen plate (2) being detachably fixedly mounted on the inner side of the outer frame (1), and a plurality of evenly distributed filter punching holes (3) being formed through the polyurethane perforated screen plate (2); Its characteristics are: A plurality of steel wires (4) distributed in a crisscross pattern and supported on the bottom of the polyurethane perforated screen plate (2) are fixed through the inner side of the outer frame (1); a screw tube (5) through which the steel wires (4) are passed is detachably fixed to the outer side of the outer frame (1); an adjusting screw sleeve (6) is assembled on the screw tube (5) through a thread; The two ends of the steel wire (4) are respectively and always clamped in the inner cavity of the adjusting screw sleeve (6) through the steel balls (7), and the steel wire (4) can be continuously stretched to a taut state by rotating the adjusting screw sleeve (6) outward.

2. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 1 is characterized in that: The contact surface between the steel ball (7) and the inner cavity of the adjusting screw sleeve (6) is filled with lubricating oil.

3. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 1 is characterized in that: Two mutually symmetrical turning handles (8) are welded and fixed on the outer side wall of the adjusting screw sleeve (6).

4. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 3 is characterized in that: The spiral tube (5) is also equipped with a nut (9) through a thread, and the adjusting screw sleeve (6) can be completely locked by rotating the nut (9) to contact the adjusting screw sleeve (6).

5. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 1 is characterized in that: The lower surface of the polyurethane perforated screen plate (2) is provided with crisscross limiting grooves (10), and the steel wires (4) are located in the limiting grooves (10).

6. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 1 is characterized in that: The polyurethane perforated screen plate (2) is disassembled and fixed by four clamping plates (11) installed above it; a plurality of plug-in blocks (12) distributed in a linear array are welded and fixed to the side wall of the clamping plate (11); a plurality of slots (13) for use with the plug-in blocks (12) are provided on the inner side wall of the outer frame (1); the plug-in blocks (12) can be inserted into the slots (13).

7. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to claim 6 is characterized in that: The card plate (11) is also provided with a plurality of countersunk holes (14) distributed in a linear array, and the polyurethane punching screen plate (2) is provided with a screw hole (15) used in conjunction with the countersunk hole (14); when the insert (12) is inserted into the slot (13), the countersunk hole (14) and the screw hole (15) correspond to each other in the upper and lower parts, and the screw hole (15) is fixed by installing screws in the countersunk hole (14) and the screw hole (15).

8. The optimized and modified structure of the polyurethane perforated screen plate for clean coal screening according to any one of claims 1 to 7, characterized in that: A flange (16) is welded and fixed to one end of the spiral tube (5), and a plurality of screw holes (17) are provided on the flange (16), which are fixed by installing screws in the screw holes (17).

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