CN213727798U

CN213727798U - Wave screen cloth

Info

Publication number: CN213727798U
Application number: CN202022660740.1U
Authority: CN
Inventors: 程尧; 马险峰; 程舜禹; 纵兆申
Original assignee: Anhui Fangyuan Yizhi Screening Technology Co ltd
Current assignee: Anhui Fangyuan Yizhi Screening Technology Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-20
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a wave screen, which solves the problems of unobvious layering and poor screening effect of the existing screen, and comprises a side dead zone and a screening zone, wherein the screening zone is formed by combining wave injection molding polyurethane screen pieces, and materials roll forward in a wave shape along the material flow direction; the dead zones at the side parts are provided with clamping grooves which can be buckled on rail seats of the small beams of the screening machine; the screen gap direction of the screen area is consistent with the material flow direction. The utility model discloses a material running state has been optimized effectively in the setting of wave sifter, make the effective layering of thickness material, big or small granule material is under equal vibration condition, the difference of climbing ability causes thick large granule material to be thrown higher on the sifter, it is farther, and tiny material then bounces lower, the detention time extension in the trough causes the most reasonable state that is favorable to the screening to reach the purpose that improves screening efficiency, can improve sieve permeation rate 8% -15%.

Description

Wave screen cloth

Technical Field

The utility model relates to a screening is equipped, especially relates to a wavy polyurethane high frequency straight line vibration screen cloth.

Background

The high-frequency vibrating screen is a screening machine widely used in coal industry and other industries for grading, dewatering, desliming and medium removing of fine-grained materials. In the working process, the high-frequency vibrating screen utilizes the vibration of a vibrating motor as a vibration source to enable materials to be thrown, loosened and layered on a screen mesh, small-particle materials pass through the screen, and large particles move forwards in a linear motion while being continuously thrown; the materials uniformly enter a feeding hole of the screening machine from the feeding machine, and oversize products and undersize products with various specifications are generated through the multilayer screen and are respectively discharged from respective outlets.

The core of the screen machine is the screen mesh, the screen mesh used in the past is mainly a metal screen mesh, and in recent years, rubber and polyurethane screen meshes are gradually recognized by people and popularized and applied due to the advantages of light weight, good elasticity, high wear resistance, good self-cleaning effect, long service life, maintenance-free property and the like, and are also the development direction of the screen mesh. The screen cloth that uses at present is mostly the plane screen cloth, and in the use, the material layering is not obvious on the sifting surface when causing the screening because the influence of factors such as unreasonable of material nature, viscosity or vibration frequency amplitude selection on the sifting surface, and in the forward linear motion of material, the thickness material wraps up each other, smugglies along the commodity circulation direction operation secretly, influences the screening effect, does not reach ideal screening mesh.

Disclosure of Invention

An object of the utility model is to overcome prior art's not enough and provide a wave screen cloth, utilize the difference of thick and thin granule climbing ability in the vibration process, overcome the not obvious problem of screening effect difference of current plane screen cloth material thickness layering, effectively be detained tiny material, prolong the effective screening time of tiny material on the sifter, improve the screening efficiency of material.

Wave screen cloth, be the quadrangle, including limit portion blind area and screening area, its characterized in that: the screening area is a combination of a plurality of injection-molded polyurethane screening sheets, the screening sheets are arranged in a wavy form along the material running direction, the wavelength of the screening area is 100-150mm, and the amplitude is 10-50 mm; one opposite side of the blind area of the side part is provided with a clamping groove which is buckled on a mounting rail seat of the small beam of the screening machine, and the other opposite side is a plane.

The sieve sheet comprises a frame and an opening area; the perforated area is formed by mutually interweaving longitudinal screen bars and transverse screen bars, and the edges of the longitudinal screen bars and the transverse screen bars are connected with the frame into a whole; the longitudinal screen bars are protruded on the screen area, and the middle parts of the longitudinal screen bars are raised in a wavy manner and are wavy along the material flow direction; the cross section of each longitudinal screen bar is large at the top and small at the bottom, the lower part of each longitudinal screen bar is trapezoidal or arc-shaped, and an inverted cone-shaped screen slot consistent with the material flow direction is formed between every two adjacent longitudinal screen bars; the transverse screen bars are slightly lower than the longitudinal screen bars, sink below the screening area and at the lower part of the open area, and have a spacing of about 12mm, so that the longitudinal screen bars are connected together from the lower part, and the screen slots are divided into a plurality of rectangular screen holes.

According to the above technical scheme, the utility model discloses following beneficial effect has: 1. compared with a plane screen, the screen greatly improves the screening area and the opening rate; 2. due to the arrangement of the wave-shaped screen surface, the moving track of the material on the screen surface is optimized, the material can roll on the screen surface, the material layering is promoted by utilizing the difference of the climbing capacity of the granular materials with different granularities, the large granules quickly cross the wave crest to continue to move, and the small granules and the water are retained in the wave trough to complete the sieving and screening; 3. the wave-shaped screen surface is beneficial to the transverse displacement of materials in the operation process, the uniform arrangement of the materials on the whole screen surface and the improvement of the screening effect of the materials; 4. practice proves that the screening machine adopting the structure can improve the screening penetration rate by 8-15%, the re-breaking workload is greatly reduced, and the electric energy loss and the equipment reactive loss are reduced.

Drawings

Fig. 1 is a schematic perspective view of the screen of the present invention.

Fig. 2 is a perspective view of the screen plate of the screen panel of the present invention.

Fig. 3 is a plan view of the screen of the present invention.

Fig. 4 is a sectional view a-a in fig. 3.

Fig. 5 is a sectional view B-B in fig. 4.

FIG. 6 is a cross-sectional view of the mounting rail.

Figure 7 is the screen installation schematic of the present invention.

Figure 8 is a schematic view of the screen of the present invention installed to form a wavy screen surface.

Figure 9 is the utility model discloses during operation material screening state schematic diagram.

In the figure: 1. the device comprises an edge blind area, 2, a screening area, 3, a polyurethane coating layer, 4, a flat steel framework, 5, a screen sheet, 6, a frame, 7, a transverse screen bar, 8, a longitudinal screen bar, 9, a screen gap, 10, a hole opening area, 11, a clamping groove, 12 and a mounting rail seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the wave screen cloth of the utility model is quadrilateral, comprising an edge blind area 1 and a screening area 2. The screening area 2 is formed by combining a plurality of injection-molded screening pieces 5 in an up-down, left-right mode, the screening pieces 5 are arranged in a wave-shaped mode along the material running direction, the wavelength of the screening area 2 is 100-150mm, and the amplitude is 10-50 mm.

The edge blind area 1 comprises a polyurethane coating layer and a flat steel framework, wherein one opposite edge is provided with a clamping groove 3, as shown in figure 7, the clamping groove is used for being buckled on a mounting rail seat 4 of a small beam of the screening machine, and the other opposite edge is a plane, as shown in figure 8, a plurality of wavy polyurethane high-frequency linear vibration screen meshes are conveniently and closely arranged together.

As shown in fig. 2, the screen sheet 5 includes a frame 6 and an open area 10. As shown in fig. 3 and 4, the perforated area 10 is formed by interweaving longitudinal screen bars 8 and transverse screen bars 7, the edges of the longitudinal screen bars 8 and the transverse screen bars 7 are connected with the frame 6 into a whole, the longitudinal screen bars 8 protrude from the screening area 2, the middle parts of the longitudinal screen bars are raised in a wavy manner and form waves along the material flow direction, as shown in fig. 5, the cross section of the longitudinal screen bars 8 is large at the upper part and small at the lower part, the lower parts of the longitudinal screen bars are trapezoidal or arc-shaped, and inverted cone-shaped screen seams 9 are formed between two adjacent longitudinal screen bars 8, so that screening and material penetration are facilitated; the transverse screen bars 7 are slightly lower than the longitudinal screen bars 8, sink below the screening area 2 and below the opening area 10, are spaced at intervals of 12mm, are connected together from the lower part of the longitudinal screen bars 8, and divide the screen slits 9 into a plurality of rectangular screen holes, so that the screen holes are shaped, the strength of the screen holes is improved, and the whole screen sheet 5 is reinforced.

The direction of the screen slot 9 is consistent with the material flow direction, and the width is set to be 0.15mm, 0.25mm, 0.5mm, 0.75mm, 1.0mm, 1.5mm and 2.0mm according to the screening requirement; the back widths of the longitudinal screen bars 8 are respectively set to be 1.25mm, 1.25mm, 1.5mm, 1.5mm, 1.75mm, 1.75mm and 2.0 mm.

The opening area 10 can effectively retain and delay the operation of fine particles by utilizing the difference of climbing capacities on the screen surface of different particle sizes, thereby improving the screening penetration rate and the screening capacity.

The sieve sheet 5 is formed by injection molding of TPU material through a mold.

Fig. 6 shows a sectional view of the mounting rail 4. This installation rail seat 4 can be installed on the sieve machine trabecula, the utility model discloses the mounting groove 3 of usable two opposite sides, the spiral-lock is put in place fast conveniently, need not to utilize the bolt installation, saves time and saves trouble, and it is also very convenient to dismantle the change.

As shown in fig. 7, the mounting rail seat 4 is installed on the small beam of the screening machine, the utility model discloses utilize the draw-in groove 3 on both sides to detain or the pressure equipment on mounting rail seat 4, convenient and fast.

As shown in fig. 8, a plurality of undulating screens are mounted on the screen to form an undulating screening surface.

The working principle is as follows: as shown in fig. 9, the screening surface is provided with a number of successive undulating waves in the direction of flow. The material gets into the sifter from the pan feeding end, because high-frequency vibration's effect, the material is along the sifter toward the discharge end operation, because the sifter is in the high-frequency vibration state always, the material is continuous by throwing, fall, bounce again, fall again. The materials on the screen surface roll forward in the process of falling on the screen surface due to the action of the wave-shaped screen surface. Because the difference of weight, large granule material is big owing to the resilience force that receives the sifter, and the ability and the probability of crossing the sifter crest are just big at the in-process that gos forward, otherwise, tiny material is little owing to the resilience force that receives, and the height of throwing is less relatively, and consequently, the probability that the large granule passes through the crest is greater than tiny material far away to form the layering phenomenon of easily screening on the sifter, tiny granule and moisture are easy to accomplish the screening in the trompil district department of bottom.

Therefore, the utility model discloses a wavy structure sets up, can promote the thickness material layering effectively, optimizes material screening state, and big material granule can be fast through wave screening district, and the probability that the screening was accomplished in the trough to the lower floor is then distributed to the tiny particle improves greatly.

The utility model discloses utilize the difference of thickness granule climbing ability, overcome the problem that current plane screen cloth material thickness layering is not obvious screening effect poor, effectively be detained tiny material and moisture, prolong the effective screening time of tiny material and moisture on the sifter, improve the screening efficiency of material, overcome prior art and led to the fact the material parcel to smuggle secretly the layering is not obvious because of various factors, the poor problem of screening effect.

Claims

1. The utility model provides a wave screen cloth, is the quadrangle, includes limit portion blind area and sieve subregion, its characterized in that: the screening area (2) is a combination of a plurality of injection molding polyurethane screening sheets (5), the screening sheets (5) are arranged in a wave-shaped manner along the material running direction, the wavelength of the screening area (2) is 100-150mm, and the amplitude is 10-50 mm; one opposite side of the edge blind area (1) is provided with a clamping groove (3) which is buckled on a mounting rail seat (4) of a small beam of the screening machine, and the other opposite side is a plane.

2. The undulating screen of claim 1, wherein: the sieve sheet (5) comprises a frame (6) and an opening area (10); the perforated area (10) is formed by mutually interweaving longitudinal screen bars (8) and transverse screen bars (7), and the edges of the longitudinal screen bars (8) and the transverse screen bars (7) are connected with the frame (6) into a whole; the longitudinal screen bars (8) are protruded on the screening area (2), and the middle parts of the longitudinal screen bars are raised in a wavy manner and are wavy along the material flow direction; the cross section of each longitudinal screen bar (8) is large at the top and small at the bottom, the lower part of each longitudinal screen bar is trapezoidal or arc-shaped, and an inverted cone-shaped screen slot (9) consistent with the material flow direction is formed between every two adjacent longitudinal screen bars (8); the transverse screen bars (7) are slightly lower than the longitudinal screen bars (8), sink below the screening area (2) and at the lower part of the open area (10), and have a spacing of 12mm, so that the longitudinal screen bars (8) are connected together from the lower part, and the screen slots (9) are divided into a plurality of rectangular screen holes.