CN202398521U

CN202398521U - Composite waste soil screening device

Info

Publication number: CN202398521U
Application number: CN201220004322XU
Authority: CN
Inventors: 刘利军; 党晋华; 张国信; 史晓凯; 向云
Original assignee: SHANXI ACADEMY OF ENVIRONMENTAL RESEARCH
Current assignee: SHANXI ACADEMY OF ENVIRONMENTAL RESEARCH
Priority date: 2012-01-06
Filing date: 2012-01-06
Publication date: 2012-08-29
Anticipated expiration: 2022-01-06

Abstract

The utility model provides a composite waste soil screening device, which solves problems of sieve adhesion and sieve blockage of an existing screening device and comprises a fixing support, a grate sieve, a netted rotary drum, a motor and a speed reducer. The grate sieve is arranged on the top of the fixing support and is oblique to the outer side of the fixing support, the rotary drum is disposed on the inner side of the fixing support, a soil feeding hopper is connected to the lower side of the grate sieve, the tail end of the soil feeding hopper extends into the front end of the rotary drum, the inner diameter of the front end of the rotary drum is smaller than that of the rear end of the rotary drum, a horizontal center shaft is disposed at the center of the rotary shaft, and supporting spokes are disposed on the inner wall of the rotary drum and fixedly connected with the center shaft. Waste soil to be treated is added into the composite waste soil screening device from the upper side of the grate sieve, rocks freely slide under the effect of gravity, the waste soil enters the rotary drum from the soil feeding hopper, soil in the rotary drum can smoothly pass through meshes on the rotary drum, the larger rocks or larger sundries are screened out along the rotary drum from the rear end of the rotary drum, the problems of sieve adhesion and sieve blockage are effectively avoided, and waste soil screening efficiency is improved.

Description

Combined type dregs screening plant

Technical field

The utility model relates to a kind of device that sieves solid material, particularly a kind of dregs screening plant that is used to contain the contaminated site soil remediation pre-treatment work of a large amount of building wastes and reclaimed soil.

Background technology

Pollutant major part in diffusion process be trapped in soil shallow-layer, make and contain a large amount of pollutants in the thin solum, so the reparation of contaminated site thin solum is the emphasis of soil remediation work.But mostly this part soil is miscellaneous fill and contains a large amount of building wastes (like bulk cement block, fragment of brick, boulder piece etc.) that such material directly gets into the contaminated soil treatment facility, can stop up the Equipment for Heating Processing charging aperture; Even damage equipment, so mask work of contaminated soil and building waste has significance to the work of treatment of contaminated soil; At present, in the screening process of carrying out the contaminated site soil remediation, generally adopt vibratory sieve; Vibration through sieve falls soil from sieve aperture, this treating apparatus is in the soil sieve timesharing; Too small sticking sieve and the stifled sieve phenomenon of then taking place of sieve aperture, the excessive separating effect that then do not reach of sieve aperture has a strong impact on the soil sieve component efficiency.

Summary of the invention

The purpose of the utility model is to solve the sticking screen blinding sieve problem that existing screening plant exists, and a kind of combined type dregs screening plant is provided.

For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:

A kind of combined type dregs screening plant comprises fixed support, grate sieve, netted cylinder, motor and reductor, and the grate sieve is arranged on the fixed support top; Grate sieve tilt outside fixed support, cylinder is arranged on the fixed support inboard, and grate sieve below connects the soil feed hopper; The end of soil feed hopper stretches into drum front end, and described drum front end internal diameter is less than back end inside diameter, and centre of the drum is provided with horizontal middle spindle; Inner wall of rotary drum is provided with the support spoke; Support spoke and be fixedly connected with central shaft, an end of central shaft is connected with reductor, and motor is connected through belt with reductor.

Add pending dregs from grate sieve top, greater than stone free landing under the gravity effect in grate sieve gap, the dregs that sieves the gap less than grate enters into cylinder from the soil feed hopper; Cylinder begins to roll under the drive of motor and speed reducer, in the process of rolling, through the bump between bump, soil block and the stone of soil and cylinder wall, the bump between soil block; Reaching soil separates with stone; Large clod is broken into the effect of small clod, simultaneously, regulates the motor speed size according to treatment effect; Make soil can pass through the mesh on the cylinder smoothly; Screened out from the cylinder rear end along cylinder than ratchel or foreign material, effectively avoided sticking sieve and stifled sieve phenomenon, improved the dregs screening efficiency.

The described combined type dregs screening plant of the utility model; In conjunction with grate sieve and two kinds of devices of cylinder; In the work of contaminated site soil remediation; Achievable solution contains the screening work of the dregs of a large amount of building wastes not of uniform size, effectively solves the sticking screen blinding sieve problem of the higher soil of moisture content in screening process, and the screening efficiency of dregs is greatly enhanced.

Description of drawings

Fig. 1 is the structural representation of the utility model combined type dregs screening plant.

Fig. 2 is the mounting structure sketch of the utility model.

Among the figure, the 1-fixed support, 2-grate sieve, the 3-cylinder, the 4-motor, the 5-reductor, 6-soil feed hopper, the 7-central shaft, 8-supports spoke, the 9-stone baffle plate of mixing, the 10-Gravel Pit, 11-soil is cheated.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

Like Fig. 1, shown in 2, the described a kind of combined type dregs screening plant of the utility model comprises fixed support 1, grate sieve 2, netted cylinder 3, motor 4 and reductor 5.Excavate two ponds during use earlier: Gravel Pit 10 and soil hole 11, be used for placement devices, Gravel Pit 10 is positioned at side-lower outside cylinder 3 rear ends, is used for depositing the stone that screens; Soil hole 11 is positioned at cylinder 3 belows, and the soil after the screening is deposited in the soil hole 11, and entire equipment is placed in below the surface water horizontal line.

As shown in Figure 1, grate sieve 2 is arranged on fixed support 1 top, grate sieve 2 tilt outside fixed support 1, and cylinder 3 is arranged on fixed support 1 inboard, and grate sieves 2 belows and connects soil feed hopper 6.Grate sieve 2 is provided with the grate bar; The grate interspace so that the bulk stone can not get into the soil feed hopper, avoids stone to stop up the blanking port of soil feed hopper by the 6 below blanking bore decisions of soil feed hopper; Generally speaking, the grate interspace that is provided with on the grate sieve 2 is that 150mm--200mm can meet the demands.According to experimental result, the angle that grate sieve 2 and horizontal plane are set is 45 °, can guarantee that the bulk stone sieves 2 inclined-planes along grate and falls the outside, and all the other dregs get into soil feed hoppers 6.

As shown in Figure 1, the end of soil feed hopper 6 stretches into cylinder 3 front ends, and described cylinder 3 front inner diameter make cylinder wall be the low shape in preceding high back less than back end inside diameter, and the stone that filters out after being convenient to sieve falls from the rear end.Cylinder 3 centers are provided with horizontal middle spindle 7, and cylinder is horizontally fixed on the brandreth by central shaft, and cylinder 3 inwalls are provided with and support spoke 8, support spoke 8 and are fixedly connected with central shaft 7, are used for support fixation cylinder 3.The top of soil feed hopper 6 is connected grate sieve 2 and cylinder 3 respectively with end, and comprises an inclined-plane to cylinder 3 lopsidedness.Below, cylinder 3 rear ends is provided with assorted stone baffle plate 9, falls into Gravel Pit 10 with the convenient stone that comes out from cylinder 3 rear ends.Cylinder 3 walls are provided with screen cloth, and the big I of sieve aperture is selected screen cloth according to actual needs, and generally its slot size is the screening requirement that 50mm*50mm can satisfy common dregs.

As shown in Figure 1, an end of drum central axis 7 is connected with reductor 5, and motor 4 is connected with reductor 5, can adopt variable-frequency motor so that the adjustment rotating speed.The power of variable-frequency motor and rotating speed can dispose according to actual needs, and power is generally 3kW, rotating speed adjustable, and speed adjustable range is generally 0.5 ~ 50 rev/min, can regulate the rotating speed size according to treatment effect.

Claims

1. combined type dregs screening plant is characterized in that: comprise fixed support (1), grate sieve (2), netted cylinder (3), motor (4) and reductor (5), grate sieve (2) is arranged on fixed support (1) top; Grate sieve (2) tilt outside fixed support (1); Cylinder (3) is arranged on fixed support (1) inboard, and grate sieve (2) below connects soil feed hopper (6), and the end of soil feed hopper (6) stretches into cylinder (3) front end; Described cylinder (3) front inner diameter is less than back end inside diameter; Cylinder (3) center is provided with horizontal middle spindle (7), and cylinder (3) inwall is provided with and supports spoke (8), supports spoke (8) and is fixedly connected with central shaft (7); One end of central shaft (7) is connected with reductor (5), and motor (4) is connected with reductor (5).

2. combined type dregs screening plant according to claim 1 is characterized in that: cylinder (3) wall is provided with screen cloth.

3. combined type dregs screening plant according to claim 1 is characterized in that: below, cylinder (3) rear end is provided with assorted stone baffle plate (9).

4. according to claim 1 or 2 or 3 described combined type dregs screening plants, it is characterized in that: grate sieve (2) is 45 ° with the angle of horizontal plane.

5. according to claim 1 or 2 or 3 described combined type dregs screening plants, it is characterized in that: the grate interspace on the grate sieve (2) is 150mm--200mm.

6. according to claim 1 or 2 or 3 described combined type dregs screening plants, it is characterized in that: described motor (4) adopts variable-frequency motor.

7. combined type dregs screening plant according to claim 2 is characterized in that: the slot size of the screen cloth on the cylinder (3) is 50mm * 50mm.