CN110064242A - High frequency linear is dehydrated dusting cover - Google Patents

Abstract

A high-frequency linear dewatering fine screen belongs to the field of vibrating screening machinery. It is developed for the problems of low dewatering efficiency and poor dewatering effect of the existing dewatering screen. Including screen frame, vibration exciter, screen surface and vibration damping support device. The overall screen surface is composed of three sections: positive inclination angle screen surface, negative inclination angle screen surface and horizontal screen surface. Part of the screen surface at the feeding end is a dewatering screen surface, and the angle between it and the horizontal surface is 45-60°, and the direction of the screen slits is horizontal. The screen is arranged in the width direction, which is perpendicular to the direction of the feed material flow; the screen surface in the middle part is the screen surface of the sedimentation and filter layer section, and the angle between the screen and the horizontal plane is ‑3～‑10°, and the direction of the screen slits is consistent with the direction of the material flow; The screen surface of the discharge end part is the screen surface of the filter layer thickening and dehydration section, and the angle between it and the horizontal plane is 0°, and the direction of the screen slit holes is consistent with the direction of the material flow. It has the characteristics of scientific and reasonable screen surface design and screen slot arrangement, high dewatering efficiency and good dewatering effect. It is suitable for dewatering of fine particle materials and powdery materials in wet screening operations.

Description

High frequency linear dewatering fine screen

technical field

The invention belongs to the field of vibrating screening machinery, and mainly relates to a high-frequency linear dewatering fine screen which solves the efficient dewatering of fine-grained materials and powdery materials in wet screening operations.

Background technique

In the existing dewatering screens for fine-grained materials and powdery materials, the overall screen surface is generally composed of a horizontal or negative inclination angle screen surface. With this structure, in the wet screening operation, the dewatering capacity of the feeding end is weak, and the The area and depth of the pool formed by the end section of the material are not ideal, and it is difficult for the micro solid particles in the water to deposit to form a filter layer, which has poor filtering effect on the subsequent slurry. The thickness of the slurry layer or the formed thickness is very thin, which affects the effect of screening and dehydration. In addition, if the dehydration capacity of the feeding end is weak and the dehydration is not timely, it is easy to cause the phenomenon of water running over the screen surface, making the material dehydration dirty or reducing the dehydration efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high-frequency linear dewatering fine screen, which can improve the dewatering speed at the feeding end and effectively improve the dewatering efficiency and dewatering effect of the whole machine.

The present invention is realized by the following technical solutions, including a screen frame, a vibration exciter, a screen surface and a vibration damping support device, and is characterized in that: the overall screen surface is composed of three sections: a positive inclination angle screen surface, a negative inclination angle screen surface and a horizontal screen surface The screen surface at the feeding end is a dewatering screen surface, and the angle between it and the horizontal plane is 45-60°. The direction of the screen slit holes is arranged transversely to the screen width direction, which is perpendicular to the direction of the feeding material flow; the middle part of the screen surface is a sedimentary surface. The angle between the screen surface of the filter layer and the horizontal plane is -3 to -10°, and the direction of the screen slit is consistent with the direction of the material flow; the screen surface of the discharge end part is the screen surface of the filter layer thickening and dehydration section, which is in line with the horizontal plane. The included angle is 0°, and the direction of the screen slit is consistent with the direction of the material flow.

The beneficial effect of the present invention is that the high-frequency linear dewatering fine screen increases the dewatering screen surface of the positive inclination angle of the feeding end section, and the direction of the screen slit holes is perpendicular to the direction of the material flow, so that the moisture in the material can be rapidly absorbed during the operation of the vibrating screen. Cut into the screen slit hole, so the material slurry can quickly remove 1/3 of the water on the screen surface of the feeding end section. Since the screen surface in the middle section has a negative inclination angle, the material is gradually deposited into a filter layer while dewatering in this section. The filter layer of the material on the screen surface of the discharge end section is gradually thickened and compacted for effective dehydration. It has the characteristics of scientific and reasonable screen surface design and screen slot arrangement, high dewatering efficiency and good dewatering effect. It is suitable for dewatering of fine particle materials and powdery materials in wet screening operations.

Description of drawings

Fig. 1 is the structural representation of the present invention;

In the figure, 1 is the screen frame, 2 is the vibration exciter, 3 is the screen surface, 4 is the vibration damping support device, L3 is the screen surface of the feeding end part, L2 is the screen surface of the middle part, and L1 is the screen surface of the discharge end part; α is the angle between the screen surface of the middle part and the horizontal plane, and the angle between the screen surface of the β feed end part and the horizontal plane.

Detailed ways

The specific embodiments of the present invention are described below in conjunction with the accompanying drawings:

It includes a screen frame 1 , a vibration exciter 2 , a screen surface 3 and a vibration damping support device 4 . The linear vibration exciter 2 is installed on the screen frame 1 , and the screen frame 1 is connected with the vibration damping support device 4 . The overall screen surface 3 is composed of three sections: positive inclination angle screen surface, negative inclination angle screen surface and horizontal screen surface. The screen surface L3 of the feeding end part is the dewatering screen surface, the angle β=50° with the horizontal plane, the direction of the screen slit holes is arranged transversely to the screen width direction, and is perpendicular to the direction of the feeding material flow; the screen surface L2 of the middle part is the sedimentation and The screen surface of the filter layer section has an angle α=-7° with the horizontal plane, and the direction of the screen slit is consistent with the direction of the material flow; the screen surface L1 of the discharge end part is the screen surface of the filter layer thickening and dehydration section, and the angle between the screen surface and the horizontal plane is 0°, and the direction of the sieve slit is consistent with the direction of the material flow. The vibration track of the exciter is a straight line, the vibration frequency is 950-1500r/min, and the double amplitude is 8-4mm.

Claims (1)

1. A high-frequency linear dewatering fine screen, comprising a screen frame (1), a vibration exciter (2), a screen surface (3) and a vibration damping support device (4), characterized in that: the overall screen surface (3) is It is composed of three sections: positive inclination angle screen surface, negative inclination angle screen surface and horizontal screen surface. The screen surface (L3) at the feeding end is the dewatering screen surface, the angle with the horizontal plane is 45-60°, and the direction of the screen slit holes is transverse to the screen. It is arranged in the width direction and is perpendicular to the direction of the feed material flow; the screen surface (L2) in the middle part is the screen surface of the sedimentation and filter layer section, and the angle with the horizontal plane is -3 ~ -10°, and the direction of the screen slit is in the direction of the material flow. Consistent; the screen surface (L1) of the discharge end part is the screen surface of the filter layer thickening and dehydration section, the angle between it and the horizontal plane is 0°, and the direction of the screen slit is consistent with the direction of the material flow.