CN102000663A - Sieve box with nonplanar pit type sieve faces - Google Patents

Abstract

A screen box with a non-planar pit-shaped screen surface, comprising a screen frame (1), a non-planar screening panel (2), and a mounting plate (3), and the non-planar screening panel (2) is punched with the same size as the display After the screening through-hole, it is processed into a hemispherical crown or hemispherical or cubic pit structure with different sizes, and is mechanically fixed on the inner side of the bottom of the screen frame (1) by installing the pressure plate (3). It can also be a non-planar braided screen (2) with the same size grid through holes installed on the inside of the bottom of the screen frame (1), and it is also processed with hemispherical crowns or semi-ellipsoids or Cubic pit structure. The screen box with non-planar pit-shaped screen surface has three-dimensional sieving performance in three directions: up and down, front and rear, and left and right, and increases the effective sieving surface area. It is a new type of high-efficiency screen box with the advantages of easy processing and manufacturing.

Description

A screen box with non-planar pit-shaped screen surface

technical field

The invention relates to a screen box with a non-planar pit-shaped screen surface. Specifically, it provides a three-dimensional screen screen with high screening efficiency, not easy to block holes, good screen penetration, and practical and simple for various vibrating screens. screen box.

Background technique

Vibrating screens are widely used in mining, metallurgy, coal, petrochemical, water conservancy and electric power, light industry, construction, transportation and other industrial sectors for raw material classification operations. It is an important industrial basic equipment.

The screen surface is the working surface where the screen box of the vibrating screen directly contacts the material. The structure and shape of the screen surface have a decisive impact on improving screening efficiency and productivity, saving energy and reducing production costs. They are all planar screen surfaces such as plate-shaped screen surface (sieve plate), bar screen surface, wire weaving screen surface and non-metallic screen surface. The research focus on the structure and form of the screen surface is generally the number of openings. , The structure, shape (circle, square, hexagon, rectangle) of the sieve hole and the improvement of its size did not pay attention to the influence of the overall sieve surface structure shape on the screening efficiency; some scholars explored and studied the combination of broken lines and arcs. Type multi-segment screen surface [ZL03213164X], fast-line equal-thickness screen surface [ZL97243275.2] and other new screen surfaces, but they are basically flat screen surfaces, which are difficult to popularize and apply due to difficulties in design and manufacture; patent application documents introduce a A corrugated sieving sieve surface [200810070181.X] mainly used in cigarette production can improve the sieving rate, but its design and manufacture are also relatively difficult, and the use surface is also limited. After observation, it is found that the characteristics of the flat screen surface are: the material can only pass through the screen surface from top to bottom, and has only one-dimensional screen penetration, and its effective screening surface area is small, which is the cause of the present situation. There is one of the main reasons for the low screening efficiency of vibrating screens. Therefore, there is a need for the emergence of new multi-dimensional sieve-permeable sieve surfaces and the study of their sieve-through principles. After research, the present invention proposes a series of screen boxes with non-planar pit-shaped screen surfaces that can overcome the above-mentioned defects.

Contents of the invention

The screen box with non-planar pit-shaped screen surface provided by the present invention has the following two technical solutions:

(1). A screen box with a non-planar pit-shaped screen surface, including a screen frame, a non-planar screening panel, and a mounting pressure plate. After the non-planar screening panel is punched with screen through holes of the same size as the display type, It is processed into a hemispherical crown-shaped or semi-ellipsoidal or cubic pit structure with different sizes, and is mechanically fixed on the inner side of the bottom of the screen frame by installing a pressure plate.

(2). A screen box with a non-planar pit-shaped screen surface, including a screen frame, a non-planar woven screen, and a mounting plate. The non-planar woven screen with the same size grid through holes is processed into a display Hemispherical crown-shaped or semi-ellipsoidal or cubic pit structures of different sizes are mechanically fixed on the inner side of the bottom of the screen frame by installing a pressure plate. .

The inventor has carried out screening experiments on the screen boxes of the above two non-planar wave-shaped screen surfaces under the same screening conditions (materials, operating conditions, and vibrating screen main body), and it has been proved that there are three-dimensional screens in three directions: up and down, front and back, and left and right. Therefore, it has high screening efficiency and good screen permeability, and is a new type of high-efficiency screening box.

Description of drawings

Accompanying drawing 1 is the structure diagram of the first embodiment of the present invention.

Accompanying drawing 2 is the structure diagram of the second embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is the schematic diagram (Fig. 1-a) of the first embodiment of the present invention, and it comprises screen frame 1, non-planar screening panel 2, installation pressure plate 3, and non-planar screening panel 2 is stamped with the same size of display type After sieving through holes, it is processed into a hemispherical crown (Fig. 1-b) or semi-ellipsoid (Fig. 1-c) or cubic pit structure with different sizes, and is mechanically fixed by installing the pressure plate 3 Installed on the inner side of the bottom of the screen frame 1 (Figure 1-d). The size of the screening through-holes on the non-planar screening panel 2 depends on the requirements for screening particles.

Fig. 2 is the schematic diagram (Fig. 2-a) of the second embodiment of the invention, it comprises screen frame 1, non-planar weaving type screen cloth 2, installation pressure plate 3, has the non-planar weaving shape type of grid through hole of the same size The screen 2 is processed into a hemispherical crown or semi-ellipsoid (Fig. 2-b) or cubic pit structure with different sizes, and is mechanically fixed on the inside of the bottom of the screen frame 1 by installing the pressure plate 3. The size of the grid through holes on the non-planar woven screen 2 depends on the requirements for screening particles. This sieve box not only has three-dimensional sieveability in the three directions of up and down, front and back, and left and right, but also has the advantages of good sieveability and high screening efficiency, and is easy to manufacture, practical and simple, safe and reliable.

Claims (2)

1. the screen box of an on-plane surface dimple-shaped compass screen surface, comprise screen frame (1), on-plane surface screening panel (2), pressing plate (3) is installed, it is characterized in that the punching out of on-plane surface screening panel (2) has the screening through hole of array type same size, be reprocessed into the hemisphere with array type different size crown or semielliptical shape or cube bowl configurations, and be installed in the inboard of screen frame (1) bottom by installation pressing plate (3) with mechanical method fixation.

2. the screen box of an on-plane surface dimple-shaped compass screen surface, comprise screen frame (1), on-plane surface Weaving type screen cloth (2), pressing plate (3) is installed, it is characterized in that the on-plane surface braiding shape type screen cloth (2) with same size grid through hole is processed into the hemisphere with array type different size crown or semielliptical shape or cube bowl configurations, and be installed in the inboard of screen frame (1) bottom by installation pressing plate (3) with mechanical method fixation.。

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