High-strength bar type sieve plate

Abstract

The utility model relates to the technical field of bar feeder and vibration feeder accessories, in particular to a high-strength bar type sieve plate which comprises sieve bars, a sieve bar supporting plate and a sieve plate bottom plate. The grate bars are arranged on the grate bar supporting plate; the sieve strip supporting plate is arranged on the sieve plate bottom plate; the sieve bars are arranged on the sieve plate bottom plate; the diameters of the grate bars are gradually reduced in the material direction; the screening bars are connected with the screening bar supporting plate through the supporting rods, and the problems that a traditional screening plate is low in aperture ratio, holes are prone to being blocked, and the screening efficiency is not high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bar feeders and vibrating feeder accessories, and particularly relates to a high-strength bar screen plate. Background Technique

[0002] Bar feeders and vibrating feeders can provide continuous and uniform feeding for crushing machinery, and conduct preliminary screening on materials. They are widely used in crushing and screening combined equipment in industries such as mineral processing, building materials, chemical engineering, and electric power. They are suitable for uniform feeding of large pieces of materials in front of crushers, especially suitable for feeding of black or non-ferrous metal ores and building stones before coarse crushing. A screen plate for grading is installed on the feeding surface near the discharge end of the feeder, which can separate soil and fine materials during feeding, enabling the subsequent crushers to function more effectively. The screen plate is a very important working component in bar feeders and vibrating feeders. During operation, materials smaller than the screen holes pass through the screen holes to become undersize materials, and materials larger than the screen holes continuously move forward on the screen plate surface until they reach the discharge port of the feeder and enter the next process. The quality of the screen plate directly affects the screening efficiency and processing capacity of the vibrating feeder during the working process.

[0003] Common screen plates for bar feeders and vibrating feeders mainly have three forms: welded with rail steel, welded with cast screen bars and steel plates, or welded with steel plates. When using a screen plate welded with rail steel, the screen holes cannot be made in a flared shape (small at the feeding end and large at the discharge end). During use, the screen holes are severely blocked, and the screening effect is extremely poor. It is necessary to stop the machine at any time to clean the screen holes, resulting in low work efficiency and small processing capacity. When using a screen plate welded with cast screen bars and steel plates, although the screen holes can be made in a flared shape and the blockage of the screen holes has been greatly improved, due to the non-smooth surface and casting deformation of the cast screen bars, the blockage of the screen holes still exists. To ensure the screening effect and processing capacity, it is necessary to stop the machine regularly to clean the screen holes. When using a screen plate welded with steel plates, the screen bars are usually cut by flame cutting, and the cross-section of the screen holes is rectangular and square, not an isosceles trapezoid that is easy for materials to pass through the screen. To reduce the phenomenon of hole blockage, it is necessary to increase the flared opening of the screen holes, that is, when ensuring the width of the screen bars at the discharge end remains unchanged, increase the width of its feeding end, greatly reducing the opening rate of the screen plate. Under the condition of ensuring the screening efficiency, the processing capacity of the equipment is greatly reduced. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-strength bar screen plate to solve the problems of low opening rate of traditional screen plates, easy occurrence of hole blockage, and low screening efficiency.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A high-strength bar screen plate, comprising screen bars, screen bar support plates, and a screen plate bottom plate; the screen bars are arranged on the screen bar support plates; the screen bar support plates are arranged on the screen plate bottom plate; the screen bars are arranged in an array on the upper part of the screen plate bottom plate; along the material direction, the diameters of the screen bars gradually decrease; the screen bars are connected to the screen bar support plates through support rods.

[0007] Furthermore, a horn hole structure is arranged at the gap between the screen bars; the taper of the horn hole is set to 1° - 3°.

[0008] Furthermore, the support rod is arranged as a replaceable structure.

[0009] Furthermore, fixing screw holes C are arranged on the surface of the screen bar support plate; fixing bolts are arranged for connection between the fixing screw holes C and the screen plate bottom plate.

[0010] Furthermore, fixing screw holes B are arranged inside the support rod; fixing screw holes A are arranged at the bottom of the screen bar; fixing bolts are inserted through the fixing screw holes A and the fixing screw holes B.

[0011] Furthermore, a conical platform is arranged at the lower part of the screen bar.

[0012] Furthermore, wear-resistant tiles are arranged on the surface of the screen plate bottom plate; the wear-resistant tiles are arranged as an independent replaceable structure.

[0013] Compared with the prior art, the present utility model can achieve one of the following beneficial effects:

[0014] 1. By arranging the screen bars with a taper on the screen plate bottom plate to form a screen bar mesh, with a large diameter at the feed end and a small diameter at the discharge end, after welding the screen bars, the screen holes at the feed end are small and the screen holes at the discharge end are large, forming a horn shape, reducing the blocking phenomenon of materials.

[0015] 2. By arranging the horn-shaped openings with gaps between the screen bars, it can prevent the bottom plate at the discharge end from blocking the materials and causing screen hole blockage, and at the same time, as much as possible, reduce the weight of the screen plate, with the screen plate made higher at the discharge end and lower at the feed end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present utility model.

[0017] Figure 2 It is a schematic top view of the structure of the present utility model.

[0018] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0019] Figure 4 It is a schematic diagram of the screen plate structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Embodiment 1

[0022] A high-strength bar screen plate includes screen bars 1, screen bar support plates 2, and screen plate bottom plates 3; the screen bars 1 are arranged on the screen bar support plates 2; the screen bar support plates 2 are arranged on the screen plate bottom plates 3; the screen bars 1 are arranged in an array on the upper part of the screen plate bottom plates 3; along the material direction, the diameters of the screen bars 1 gradually decrease; the screen bars 1 are connected to the screen bar support plates 2 through support rods 201, and a trumpet hole structure is arranged at the gaps between the screen bars 1; the taper of the trumpet holes is set to 1° - 3°, which can realize that the arranged screen bars with taper are arranged on the screen plate bottom plate to form a screen bar mesh. The diameter of the feed end is large, and the diameter of the discharge end is small. After the screen bars are welded, the screen holes at the feed end are small, and the screen holes at the discharge end are large, forming a trumpet shape, reducing the blockage phenomenon of materials.

[0023] Embodiment 2

[0024] On the basis of Embodiment 1, a conical platform 202 is arranged at the lower part of the screen bar 1. By arranging the conical platform, it can prevent the bottom plate at the discharge end from blocking the materials and causing screen hole blockage. At the same time, the weight of the screen plate is reduced as much as possible, and the screen plate is made with a higher discharge end and a lower feed end.

[0025] Embodiment 3

[0026] On the basis of Embodiment 1, the support rod 201 is arranged in a replaceable structure, which can realize convenient adjustment of the height of the screen bar.

[0027] Embodiment 4

[0028] On the basis of Embodiment 1, fixing screw holes C301 are arranged on the surface of the screen bar support plate 2; fixing bolts are arranged between the fixing screw holes C301 and the screen plate bottom plate 3, which can realize that the screen plate can be conveniently disassembled and assembled through the screen bars connected by the bolts.

[0029] Embodiment 5

[0030] On the basis of Embodiment 1, wear-resistant tiles 302 are arranged on the surface of the screen plate bottom plate 3; the wear-resistant tiles 302 are arranged in an independent replaceable structure, which can realize increasing the structural strength and durability of the screen plate by arranging the wear-resistant tiles.

[0031] Although the present utility model has been described herein with reference to a number of illustrative embodiments of the present utility model, it should be understood that those skilled in the art can design many other modifications and embodiments that will fall within the scope and spirit of the principles disclosed in this application. More specifically, within the scope of the disclosure, the drawings and the claims of this application, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be apparent to those skilled in the art.

Claims

1. A high-strength bar screen plate, characterized in that: It includes sieve bars (1), sieve bar support plates (2), and sieve plate bottom plates (3); the sieve bars (1) are arranged on the sieve bar support plates (2); the sieve bar support plates (2) are arranged on the sieve plate bottom plates (3); the sieve bars (1) are arranged in an array on the upper part of the sieve plate bottom plates (3); along the material direction, the diameters of the sieve bars (1) are gradually decreased; the sieve bars (1) are connected to the sieve bar support plates (2) through support rods (201).

2. The high-strength bar screen plate according to claim 1, wherein: The gap between the sieve bars (1) is provided with a horn hole structure; the taper of the horn hole is set to 1°-3°.

3. The high-strength bar screen plate according to claim 1, characterized in that: The support rods (201) are provided with a replaceable structure.

4. A high-strength bar screen plate according to claim 1, characterized in that: The surface of the sieve bar support plates (2) is provided with fixing screw holes C (301); fixing bolts are arranged between the fixing screw holes C (301) and the sieve plate bottom plates (3).

5. The high-strength bar screen plate according to claim 1, characterized in that: The inside of the support rods (201) is provided with fixing screw holes B (203); the bottom of the sieve bars (1) is provided with fixing screw holes A (101); fixing bolts are inserted into the fixing screw holes A (101) and the fixing screw holes B (203).

6. The high-strength bar screen plate according to claim 1, characterized in that: A tapered platform (202) is arranged at the lower part of the sieve bars (1).

7. The high-strength bar screen plate according to claim 1, wherein: Wear-resistant tiles (302) are arranged on the surface of the sieve plate bottom plates (3); the wear-resistant tiles (302) are provided with an independent replaceable structure.

Images