Fine fraction material grading dehydration vibrating screen

Abstract

The utility model relates to screening equipment, in particular to a fine-fraction material grading and dewatering vibrating screen. Comprising a screen box, a vibrating mechanism, a lower screen beam and an upper screen beam, the screen box comprises side groove plates and a screen bottom plate, filter cloth is laid on the screen bottom plate, the two ends of the lower screen beam and the two ends of the upper screen beam are connected with the side groove plates respectively, the two sides of the filter cloth are connected with the side groove plates through side tensioning assemblies, and each side tensioning assembly comprises a pressing block and a pressing plate. The pressing blocks are arranged on the two sides of the upper portion of the filter cloth and tightly attached to the side groove plates, the edges of the filter cloth are arranged among the screen bottom plate, the pressing blocks and the side groove plates, and positioning grooves are formed in the inner sides of the pressing blocks; the pressing plate is in a C shape, the lower horizontal portion of the pressing plate is inserted into the positioning groove, and the vertical portion of the pressing plate is detachably connected with the side groove plate. According to the utility model, the filter cloth adopts a side tensioning fixing mode, so that the problems of large tensioning degree and large deformation of the filter cloth are effectively solved; the filter cloth is convenient to replace, the filter cloth replacement time is short, the efficiency is high, the service life of the filter cloth is prolonged, the screening efficiency is improved, and the yield is increased.

Description

Technical Field

[0001] The utility model relates to screening equipment, in particular to a vibrating screen for grading and dehydrating fine-grained materials. Background Art

[0002] The dewatering vibrating screen is used for sand washing in gravel plants, coal slime recovery in coal preparation plants, and dry tailings discharge in ore dressing plants, etc. Its functions are dewatering, desliming, and demediation. The dewatering vibrating screen is equipped with a filter cloth, which is fixed by pressing with wooden strips. Replacing the filter cloth takes a long time, and the wooden strips will deform or rot, resulting in excessive deformation of the filter cloth, short service life of the filter cloth, and low screening efficiency. The screen beam and the screen bottom plate are stressed separately, the strength of the screen box is low, and the ability to process water volume restricts the processing capacity of the screen machine. The Chinese utility model with the authorization announcement number CN208373524U discloses a vibrating screen with a quick-install filter cloth screen plate. The filter cloth of the utility model is pressed with wood, and the filter cloth has a large deformation. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a fine-grained material grading and dehydration vibrating screen, effectively solving the problems of large tension and deformation of the filter cloth, increasing the service life of the filter cloth, and shortening the time consumption for replacing the filter cloth.

[0004] The utility model solves the technical problem and adopts the following technical solution:

[0005] A fine-grained material grading and dehydrating vibrating screen comprises a screen box, a vibrating mechanism, a lower screen beam and an upper screen beam, wherein the screen box comprises a side slot plate and a screen bottom plate, the lower screen beam and the upper screen beam are respectively located below and above the screen bottom plate, a filter cloth is laid on the screen bottom plate, and both ends of the lower screen beam and the upper screen beam are respectively connected to the side slot plate.

[0006] The two sides of the filter cloth are connected to the side groove plates through a side tensioning assembly. The side tensioning assembly includes a pressing block and a pressing plate. The pressing blocks are placed on both sides of the upper part of the filter cloth and are tightly attached to the side groove plates. The edges of the filter cloth are placed between the screen bottom plate, the pressing block and the side groove plates. A positioning groove is provided on the inner side of the pressing block. The pressing plate is C-shaped, and the lower horizontal part of the pressing plate is inserted into the positioning groove. The vertical part of the pressing plate is detachably connected to the side groove plate.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0008] 1) The filter cloth is fixed by side tension, which effectively solves the problems of large tension and deformation of the filter cloth;

[0009] 2) The side tensioning assembly is easy to install and disassemble, which is convenient for replacing the filter cloth. The replacement of the filter cloth is time-saving and efficient, which increases the service life of the filter cloth.

[0010] 3) Improve screening efficiency and increase output.

[0011] Further, the optimization scheme of the utility model is:

[0012] A pressing groove is provided on the top of the pressing block. The cross section of the pressing groove is circular and the top is open. The edge of the filter cloth is placed in the pressing groove. A pressing strip for pressing the filter cloth is passed through the pressing groove.

[0013] The pressing plate is connected to the side groove plate by bolts to achieve tensioning of the filter cloth.

[0014] The screen bottom plate is a prestressed structure, and the cross section of the screen bottom plate is an arc.

[0015] The screen bottom plate is composed of a plurality of upwardly convex arc-shaped parts, and pressure strips are arranged on the upper parts between adjacent arc-shaped parts.

[0016] A rib plate is arranged between the lower screen beam and the screen bottom plate, the upper part of the rib plate is arc-shaped, and the rib plate is fixedly connected to the lower screen beam and the screen bottom plate respectively.

[0017] The lower screen beam is located at both ends of the screen bottom plate.

[0018] The vibration mechanism is located above the screen box and is connected to the side slot plates through the reinforcement plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 It is a schematic diagram of the end of an embodiment of the utility model;

[0022] Figure 4 for Figure 3 Figure A of ;

[0023] Figure 5 A cross-sectional view of the connection of the side tensioning assembly of an embodiment of the utility model;

[0024] Figure 6 Schematic diagram of the connection between the lower screen beam and the rib plate in an embodiment of the utility model.

[0025] In the figure: screen box 1; screen bottom plate 1-1; side groove plate 1-2; connecting shaft 1-3; vibration mechanism 2; lower screen beam 3; upper screen beam 4; filter cloth 5; pressing block 6; pressing plate 7; pressing strip 8; pressing strip 9; rib plate 10. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] See also Figure 1-Figure 5 This embodiment provides a fine-grained material grading and dehydration vibrating screen, which is mainly composed of a screen box 1, a vibration mechanism 2, a lower screen beam 3 and an upper screen beam 4. The screen box 1 is mainly composed of a screen bottom plate 1-1 and a side slot plate 1-2. The screen bottom plate 1-1 is densely covered with through holes. Two side slot plates 1-2 are respectively located on both sides of the screen bottom plate 1-1. The feed end of the screen box 1 is provided with an end slot plate. Two lower screen beams 3 are respectively located at the two ends below the screen bottom plate 1-1. The upper screen beam 4 is located above the screen bottom plate 1-1. The lower screen beam 3 and the upper screen beam 4 are respectively connected to the side slot plate 1-2 by bolts, and the outer side of the side slot plate 1-2 is symmetrically installed with a connecting shaft 1-3. The vibration mechanism 2 is a vibration motor, which is located above the screen box 2 and connected to the side slot plate 1-2 through a reinforcing plate.

[0029] The filter cloth 5 is laid on the sieve bottom plate 1-1. The two sides of the filter cloth 5 are connected to the side slot plate 1-2 through the side tensioning assembly. The side tensioning assembly is mainly composed of a clamping block 6, a clamping plate 7 and a clamping strip 8. The cross section of the clamping block 6 is rectangular and long. It is placed on both sides of the upper part of the filter cloth 5 and is tightly attached to the inner plate surface of the side slot plate 1-2. The edge of the filter cloth 5 is surrounded by the clamping block 6 and the sieve bottom plate 1-1, and the clamping block 6 and the side slot plate 1-2. A positioning groove is provided at the lower part of the inner side of the clamping block 6, and the positioning groove vertically penetrates the body of the clamping block 6. The clamping plate 7 is C-shaped and made of C-shaped steel. The lower horizontal part of the clamping plate 7 is inserted into the positioning groove of the clamping block 6. The vertical part of the clamping plate 7 is connected to the side slot plate 1-2 by bolts, so as to tension the filter cloth 5.

[0030] When laying the filter cloth 5, margins will be left on the edges of both sides of the filter cloth 5, and a pressing groove is provided on the top surface of the pressing block 6. The cross section of the pressing groove is circular or regular polygonal, and the top of the pressing groove is open. The edge of the filter cloth 5 is placed in the pressing groove, and a pressing strip 8 is inserted into the pressing groove. The pressing strip 8 presses the filter cloth 5. The side tensioning and fixing method of the filter cloth 5 achieves the best tension, and the time consumption of replacing the filter cloth 5 is shorter, and the service life of the filter cloth 5 is greatly improved. The screen bottom plate 1-1 of the screen box 1 is a prestressed structure, and the cross section of the screen bottom plate 1-1 is an upward convex arc. The screen bottom plate 1-1 is composed of two continuous arc-shaped parts. A pressure strip 9 is provided on the upper part between the adjacent arc-shaped parts. The pressure strip 9 can be connected to the screen bottom plate 1-1 by bolts. The pressure strip 9 presses the filter cloth 5, and the number of arc-shaped parts is determined according to the span of the screen box 1. Under the action of the prestress of the arc-shaped screen bottom plate 1-1, the filter cloth 5 has a lower deformation and a longer service life.

[0031] A rib plate 10 is provided between the lower screen beam 3 and the screen bottom plate 1-1 ( Figure 6 As shown in the figure, the upper part of the rib plate 10 is two continuous arcs, and the rib plate 10 is welded to the lower screen beam 3 and the screen bottom plate 1-1 respectively. The rib plate 10 improves the strength of the lower screen beam 3. Without increasing the weight of the vibrating screen, the improvement of the strength of the lower screen beam 3 can achieve greater vibration intensity and increase the amplitude. By increasing the amplitude and frequency of vibration combined with the installation inclination and material distribution of the vibrating screen, the water volume processing capacity is improved, and the comprehensive processing capacity of the vibrating screen is increased by 1 times.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A vibrating screen for grading and dehydrating fine-grained materials, comprising a screen box, a vibrating mechanism, a lower screen beam and an upper screen beam, the screen box comprising a side slot plate and a screen bottom plate, the lower screen beam and the upper screen beam are respectively located below and above the screen bottom plate, a filter cloth is laid on the screen bottom plate, and both ends of the lower screen beam and the upper screen beam are respectively connected to the side slot plate, characterized in that: The two sides of the filter cloth are connected to the side groove plates through a side tensioning assembly. The side tensioning assembly includes a pressing block and a pressing plate. The pressing blocks are placed on both sides of the upper part of the filter cloth and are tightly attached to the side groove plates. The edges of the filter cloth are placed between the screen bottom plate, the pressing block and the side groove plates. A positioning groove is provided on the inner side of the pressing block. The pressing plate is C-shaped, and the lower horizontal part of the pressing plate is inserted into the positioning groove. The vertical part of the pressing plate is detachably connected to the side groove plate.

2. The fine-grained material grading and dehydration vibrating screen according to claim 1 is characterized in that: A pressing groove is provided on the top of the pressing block. The cross section of the pressing groove is circular and the top is open. The edge of the filter cloth is placed in the pressing groove. A pressing strip for pressing the filter cloth is passed through the pressing groove.

3. The fine-grained material grading and dehydration vibrating screen according to claim 1 is characterized in that: The pressing plate is connected to the side groove plate by bolts.

4. The fine-grained material grading and dehydration vibrating screen according to claim 1, characterized in that: The screen bottom plate is a prestressed structure, and the cross section of the screen bottom plate is an arc.

5. The fine-grained material grading and dehydration vibrating screen according to claim 4, characterized in that: The screen bottom plate is composed of a plurality of upwardly convex arc-shaped parts, and pressure strips are arranged on the upper parts between adjacent arc-shaped parts.

6. The fine-grained material grading and dehydration vibrating screen according to claim 1, characterized in that: A rib plate is arranged between the lower screen beam and the screen bottom plate, the upper part of the rib plate is arc-shaped, and the rib plate is fixedly connected to the lower screen beam and the screen bottom plate respectively.

7. The fine-grained material grading and dehydration vibrating screen according to claim 1, characterized in that: The lower screen beam is located at both ends of the screen bottom plate.

8. The fine-grained material grading and dehydration vibrating screen according to claim 1, characterized in that: The vibration mechanism is located above the screen box and is connected to the side slot plates through the reinforcement plates.

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