CN2928273Y - fine particle sieve - Google Patents

Abstract

The fine-grained grading screen of the utility model comprises a screen box, a sieve plate, a drive motor, a frame and a damping spring, and seat-type vibrators are arranged on both sides of the screen box along the flow direction, and seat-type vibrator on both sides Located on the vibration excitation frame, the vibration excitation frame is set at the bottom of the screen box, the two ends of the vibration excitation frame along the logistics direction are provided with damping springs, the vibration damping springs are set on the frame, and the driving motor is set on the seat type vibration exciter Coaxially mounted on brackets fixed to the rack. It solves the structural problem of large-span screening machinery. The design width of the screen box can be increased from 2 meters to more than 8 meters. The entire screen surface vibrates smoothly, and the noise is much lower than that of traditional vibrating screens. It can save energy by more than 50%. It is suitable for coal mines , building materials, metallurgy, chemical industry, electric power and other industries for screening operations, easy installation and maintenance, light vibration weight, simplified manufacturing process, short processing cycle, no breakage of the screen box side plate, polarization phenomenon, long service life of the equipment, with Broad usability.

Description

fine particle sieve

technical field

The utility model relates to a fine-grained grading screen, which is especially suitable for the classification of coal mine fine-grained difficult-to-sieve materials, and is also suitable for sieving operations in industries such as building materials, metallurgy, chemical industry, and electric power.

Background technique

At present, there are many kinds of equipment used for the classification of fine-grained and difficult-to-sieve materials, and the most commonly used one is the vibrating screen. Practice has shown that for fine-grained materials, due to their high viscosity, the single amplitude of the vibrating screen is between 3 and 5mm, and the materials are more likely to block the screen holes, resulting in low screening efficiency and small processing capacity. The vibrator of the traditional vibrating screen is installed on both sides of the screen box, and the screen box participates in the vibration. The disadvantage is that the mechanical strength is poor, the screen box participates in vibration and consumes a lot of energy, and it is difficult to maintain.

Contents of the invention

Technical problem: The purpose of this utility model is to provide a fine-grained grading sieve with reasonable structure, high screening efficiency, large processing capacity, and convenient disassembly and maintenance.

Technical solution: The fine-grained grading screen of this utility model includes a screen box, a sieve plate, a drive motor, a frame and a damping spring, and seat-type vibrators are arranged on both sides of the screen box along the flow direction. The vibration exciter is located on the vibration excitation frame, which is set at the bottom of the screen box. The two ends of the vibration excitation frame along the logistics direction are provided with damping springs. The vibration damping springs are set on the frame, and the driving motor is set on The exciter is coaxially installed and fixed on the bracket on the frame.

The fine-grained grading screen of the utility model, the seat-type vibrator is composed of an eccentric block, a bearing seat body fixed on the excitation frame, a bearing and a transmission shaft arranged in the bearing seat body, and the eccentric block is symmetrically arranged on the protruding On the transmission shafts on both sides of the seat body, the seat type vibrator is matched with the number of screen boxes, which can be one group, two groups or three groups; The channel steel is composed of the I-beam which is buckled and connected with the groove of the channel steel, and can also be composed of square pipes or seamless pipes. .

Beneficial effects: the fine-grained grading screen of the utility model adopts seat-type vibrators on both sides outside the screen box along the flow direction, and the seat-type vibrators on both sides are located on the excitation frame, which is riveted by section steel , to solve the structural problem of large-span screening machinery, the design width of the screen box can be increased from 2 meters to more than 8 meters, the entire screen surface vibrates smoothly, and the noise is much lower than that of traditional vibrating screens. The vibrating screen can be composed of multiple units, so the overall structure is simplified, the processing cycle is greatly shortened, there are few failures, high production efficiency, environmental protection, and the driving power of the whole machine is effectively reduced. Under the same unit processing capacity and the same screening area, compared with the driving power of the traditional vibrating screen, the powerful vibrating screen can save energy by more than 50%. It is suitable for screening operations in coal mines, building materials, metallurgy, chemical industry, electric power and other industries. Its structure is optimized, it is easy to install and maintain, fully meets the requirements of rigidity, greatly reduces the weight of vibration, simplifies the manufacturing process, shortens the processing cycle, does not occur the phenomenon of screen box side plate fracture and polarization, and has a long service life and wide practicability .

Description of drawings

Fig. 1 is a structure diagram of the utility model fine-grained grading sieve.

Fig. 2 is the A-A view of Fig. 1 .

In the figure: 1-seat type vibrator, 2-screen box, 3-exciting frame, 4-frame, 5, 8-damping spring, 6-drive motor, 7-sieve plate.

Detailed ways

An embodiment of the present utility model is further described below in conjunction with accompanying drawing:

The fine-grained grading sieve of the utility model is mainly composed of a seat type vibration exciter 1, a screen box 2, an excitation frame 3, a frame 4, a drive motor 6, a sieve plate 7 and damping springs 5 and 8, and the screen box 2 It is installed on the inclined frame 4, and there are two sets of seat-type vibrators 1 on the outer sides of the screen side of the connected screen box 2 along the flow direction. The bearing block body on the frame 3, the bearing that is located in the bearing seat body and the transmission shaft constitute, and the eccentric block is symmetrically located on the transmission shaft extending out from the seat body both sides. The two-seat vibrator 1 is respectively located on two sets of vibration-exciting frames 3, and the vibration-exciting frame 3 is composed of two channel steels with opposite concave surfaces and an I-beam riveted together with the grooves of the channel steels. The vibration excitation frame 3 is connected to the bottom of the screen box 2, and the welding parts at both ends of the vibration excitation frame 3 along the flow direction are fixed on the vibration damping spring 5, and the vibration damping spring 5 is fixed on the frame 4, and the frame 4 is provided with a spring 8 . The drive motor 6 is set on the bracket on the frame 4, and its transmission shaft is coaxially installed with the seat type exciter 1 through a coupling. The screen box 2 is composed of a screen side, a plurality of rectangular steel beams, and a It is composed of circular steel pipes connected in series with a plurality of rectangular steel beams, and the sieve plate 7 is arranged on the sieve box 2 .

Claims (4)

1. fine grading sieves, it comprises screen box (2), sieve plate (7), drive motors (6), frame (4) and shock-absorbing spring (8), it is characterized in that: both sides are provided with a formula vibrator (1) along the logistics direction outside screen box (2), two side seat type vibrators (1) are seated on the exciting framework (3), exciting framework (3) is connected screen box (2) bottom, exciting framework (3) is provided with shock-absorbing spring (5) along the two ends of logistics direction, shock-absorbing spring (5) is located on the frame (4), drive motors (6) be located at seat formula vibrator (1) the coaxial mounted support that is fixed on the frame (4) on.

2. fine grading sieve according to claim 1, it is characterized in that: described seat formula vibrator (1) by eccentric block, be fixed in the bearing seat on the exciting framework (3), bearing and the power transmission shaft that is located in the bearing seat constitutes, the eccentric block symmetry is located on the power transmission shaft that stretches out the pedestal both sides.

3. fine grading sieve according to claim 1 and 2, it is characterized in that: described seat formula vibrator (1) matches with the number of screen box (2), can be one group, also can be two groups or three groups.

4. fine grading according to claim 1 and 2 sieve is characterized in that: the channel-section steel that described exciting framework (3) is oppositely arranged by two concave surfaces and form with the channel-section steel groove I-steel that is connected as a single entity that is interlocked also can be connected to form by square tube or seamless pipe.