CN211839548U - Wear-resistant spiral unearthing system - Google Patents
Wear-resistant spiral unearthing system Download PDFInfo
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- CN211839548U CN211839548U CN202020019516.1U CN202020019516U CN211839548U CN 211839548 U CN211839548 U CN 211839548U CN 202020019516 U CN202020019516 U CN 202020019516U CN 211839548 U CN211839548 U CN 211839548U
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Abstract
The utility model discloses a system of unearthing of stand wear and tear spiral, including casing, spirochaeta, drive arrangement and water injection cooling device, the spirochaeta comprises bearing and propeller blade, has linked firmly propeller blade on the bearing. The spiral unearthing system is used for cooling and transporting high-temperature clean soil behind the rotary kiln of the ectopic direct thermal desorption repair device for the organic contaminated soil. The water injection cooling device is positioned at one third of the front end of the shell, tungsten steel wear-resistant blocks are brazed at the end parts of the propeller blades, and the tungsten steel wear-resistant blocks are spirally distributed at the end parts of the propeller blades at intervals. The utility model discloses simple structure, the wearing and tearing of stirring soil to the paddle that can significantly reduce at paddle edge brazed tungsten steel metal wear-resisting piece, when wear-resisting piece has wearing and tearing, only need to wear-resisting piece change can, reduced because of the maintenance cost that the blade wearing and tearing caused, also reduced simultaneously because of the time limit for a project delay risk that the blade wearing and tearing caused, and have advantages such as can carry high temperature material.
Description
Technical Field
The utility model belongs to the technical field of earthwork engineering, in particular to spiral unearthed system that stand wear and tear can be used to organic contaminated soil dystopy direct thermal desorption restoration.
Background
With the upgrade, industrial transfer and transformation of domestic economy, the movement of industrial fields such as steel and chemical industry, solid waste storage yards, military bases and the like from urban central areas to other areas or suburbs, a large number of sites containing halogenated substances, total petroleum hydrocarbons, polycyclic aromatic hydrocarbons and other organic pollutants are left, polluted soil is difficult to recover, and harm is caused to agricultural products and human health.
The ectopic direct heat release is successfully applied to a plurality of soil remediation projects at home and abroad, and becomes a commercialized mature technology. As a physical remediation method, the method has the advantages of simple process, rapid treatment, short recovery period, mature technology and the like, is suitable for rapid remediation of polluted soil in urban centers, and meets the requirement of rapid commercial redevelopment of the land.
Pollute direct thermal desorption system of soil dystopy and comprise charge-in system, desorption system and tail gas processing system. Wherein the high-temperature clean soil after passing through the desorption system is cooled and transported by the spiral unearthing system and is sent to an area to be inspected for acceptance.
The spiral unearthing system mainly comprises a shell, a spiral body, a water injection cooling device and a driving device, wherein the spiral body rotates around a shaft center under the driving of the driving device, a propeller blade on the spiral body pushes materials in the shell to move forwards to achieve the purpose of conveying the materials, the propeller blade can be seriously abraded or even scrapped after long-term operation due to the fact that the propeller blade is directly contacted with high-temperature materials, after the spiral unearthed system is used for a long time, the propeller blade is seriously abraded, the whole propeller blade needs to be integrally replaced during maintenance, the maintenance cost is high, the service life is short, the maintenance and replacement are needed after the spiral unearthed system generally works for 20-30 days, and the construction period can be delayed due to frequent. Therefore, the improvement of the wear resistance of the spiral body of the spiral unearthing system becomes a problem which needs to be solved by technicians urgently.
In order to overcome the problem, manufacturers at home and abroad think of a plurality of methods, such as the novel patent CN 205167152U, which adopts a spiral outer surface to braze a hard alloy sheet, but the implementation is difficult, and the welding flux is easy to be ground; in the utility model CN 202213970U, an enamel coating is uniformly sprayed on the outer surface of the spiral body, so that the surface smoothness of the spiral body is increased, the friction between the material and the spiral body is reduced, but the processing process is more complicated; utility model patent CN 105802457A carries out the processing of spraying paint to the spiral body, nevertheless if move under high temperature environment for a long time, it is very big to the destruction of finish paint, loses protective properties very fast.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a spiral unearthing system that stand wear and tear, have simple structure, the wearability is good, long service life's characteristics.
The technical scheme is as follows:
a wear-resistant spiral unearthing system is used for cooling and transporting high-temperature clean soil behind a hot rotary kiln of an ectopic direct thermal desorption device, and comprises a shell, a spiral body, a driving device and a water injection cooling device, wherein:
the front end of the shell is provided with a feed hopper, the rear end of the shell is provided with a discharge hole, and the water injection cooling device is positioned at one third of the front end of the shell;
the spiral body comprises bearing and propeller blade, propeller blade has been linked firmly on the bearing, propeller blade be the heliciform distribute in on the bearing, propeller blade tip is provided with wear-resisting piece, wear-resisting piece interval spiral distribute in propeller blade tip, the bearing with propeller blade all locates in the casing, the spiral body transmission is connected with power drive arrangement.
Preferably, the wear-resistant blocks are made of tungsten steel YG8 hard alloy with the size of 12 x 100mm, the wear-resistant blocks are connected with the end part of the propeller in a brazing mode, and the distance between the wear-resistant blocks and the propeller blades in a spiral mode is 80-120 mm.
Preferably, the shell is a carbon steel shell, the length of the shell is 5.0-6.0m, the width of the shell is 650mm, and the wall thickness of the shell is 10 mm.
Preferably, the power driving device is a variable frequency motor and is located at the tail of the shell, and the power driving device drives the spiral body to rotate around the axial center.
Preferably, the water injection cooling device is provided with two tap water spray heads, and the flow rate is 20-30L/min.
Preferably, the cross section of the feed hopper is of an inverted frustum structure with a wide upper part and a narrow lower part, and the discharge port is arranged below the tail end of the shell.
Preferably, the material of the propeller blade is wear-resistant manganese steel, and the bearing is quenched by 45# steel.
The processing flow of the ectopic direct thermal desorption of the polluted soil comprises the following steps: firstly, carrying polluted soil from a workshop into a regenerative rotary kiln through pretreatment such as crushing, screening, adjusting water content, removing iron-containing materials through magnetic separation and the like; after entering the rotary kiln, the polluted soil is directly contacted with flame generated by a burner of the rotary kiln and is heated to a temperature higher than the gasification temperature of the target pollutant, so that the purpose of separating the pollutant from the soil is achieved; the temperature of clean soil entering a discharge port after being treated by a rotary kiln is 280-350 ℃, high-temperature soil is discharged to a spiral soil discharging machine from the lower part of the discharge port through a double-layer flap valve, and the adjusted soil falls to a ferry conveyor belt from the discharge port by adding water in the spiral soil discharging machine and is conveyed to a to-be-detected area for inspection and acceptance. The general flow of the tail gas treatment system is as follows: and removing pollutants in the tail gas enriched with gasified pollutants through links such as cyclone dust removal, high-temperature oxidation incineration pollutant degradation, cooling, cloth bag dust removal, alkali liquor leaching deacidification and the like. The utility model is used for cooling and transporting high-temperature clean soil behind the thermal rotary kiln.
Compared with the prior art, the utility model discloses gain following beneficial technological effect:
the structure is simple, the tungsten steel wear-resistant block brazed on the end part of the propeller blade has high hardness, and the abrasion of the propeller blade can be effectively reduced when high-temperature soil is stirred; when the abrasion block is abraded, the abrasion block is only needed to be replaced, the service life of the propeller blade is prolonged, the maintenance frequency of equipment is reduced, the maintenance cost caused by abrasion of the propeller blade is reduced, and meanwhile, the construction period delay risk caused by abrasion of the propeller blade is also reduced. In a word, the utility model has the advantages of simple structure, convenient use, capability of conveying high-temperature materials and the like.
Drawings
FIG. 1 is a schematic structural view of a wear-resistant spiral unearthing system.
FIG. 2 is an enlarged structural view of a spiral body of a wear-resistant spiral unearthing system
FIG. 3 is an enlarged structural view of a tungsten steel wear-resistant block of a wear-resistant spiral unearthing system.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is made on a wear-resistant spiral unearthing system provided by the present invention with reference to the embodiments. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the utility model relates to a wear-resistant spiral unearthing system, which comprises a shell 1, a spiral body 2, a driving device 3 and a water injection cooling device 4.
The front end of the shell is provided with a feed hopper 5, the rear end of the shell is provided with a discharge hole 6, and the water injection cooling device 4 is positioned at one third of the front end of the shell.
The spiral body 2 consists of a bearing 7 and a spiral blade 8. The bearing 7 is fixedly connected with a propeller blade 8, the propeller blade is spirally distributed on the bearing, the end part of the propeller blade is provided with a wear-resistant block 9, the wear-resistant block is spirally distributed at the end part of the propeller blade at intervals, the bearing and the propeller blade are arranged in the shell, and the spiral body is in transmission connection with a power driving device 3.
The abrasion-resistant block 9 is made of tungsten steel YG8 hard alloy and has a size of 12 x 100mm, the abrasion-resistant block is connected with the end part of the propeller blade 8 in a brazing mode, and the distance between the abrasion-resistant block 9 and the propeller blade 8 in a spiral mode is 80-120 mm.
The shell 1 is made of carbon steel, and has a length of 5.0-6.0m, a width of 650mm and a wall thickness of 10 mm.
The propeller blade 8 is made of wear-resistant manganese steel, and the bearing is quenched by No. 45.
The power driving device 3 is a variable frequency motor and is positioned at the tail part of the shell, and the power driving device drives the spiral body to rotate around the shaft center.
The water injection cooling device is provided with two tap water spray heads, and the flow rate is 20-30L/min.
The cross section of feeder hopper 5 is wide back taper structure down, and discharge gate 6 is located the terminal below of casing.
In the work, high-temperature clean soil at 280-350 ℃ enters the shell through the feed hopper, the power driving device 3 drives the spiral body 2 to rotate around the shaft center, the propeller blades 8 on the spiral body push the high-temperature clean soil in the shell to move forwards, the water injection cooling device 4 is arranged at one third of the front end of the shell, the high-temperature clean soil in the shell is cooled and cooled after being contacted with spray water, and the cooled clean soil continues to move towards the tail end of the shell under the pushing of the spiral body and is discharged to the discharge port.
The tungsten steel metal wear-resisting block 9 is fixedly arranged at the end part of the propeller blade in a brazing mode, the design structure is simple, and the wear of the propeller blade can be effectively reduced when high-temperature soil is stirred; when the abrasion block is abraded, the abrasion block is only needed to be replaced, the service life of the propeller blade is prolonged, the maintenance frequency of equipment is reduced, the maintenance cost caused by abrasion of the propeller blade is reduced, and meanwhile, the construction period delay risk caused by abrasion of the propeller blade is also reduced. In a word, the utility model has the advantages of simple structure, convenient use, capability of conveying high-temperature materials and the like.
The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art.
Claims (6)
1. A wear-resistant spiral unearthing system is used for cooling and transporting high-temperature clean soil after a hot rotary kiln of an ectopic direct thermal desorption device, and comprises a shell, a spiral body, a driving device and a water injection cooling device, wherein:
the front end of the shell is provided with a feed hopper, the rear end of the shell is provided with a discharge hole, and the water injection cooling device is positioned at one third of the front end of the shell;
the spirochaeta comprises bearing and propeller blade, propeller blade has been linked firmly on the bearing, propeller blade be the heliciform distribute in on the bearing, the propeller blade tip is provided with wear-resisting piece, wear-resisting piece interval spiral distribute in the propeller blade tip, the bearing with propeller blade all locates in the casing, the spirochaeta transmission is connected with power drive arrangement.
2. The wear-resistant auger unearthing system of claim 1, wherein the wear-resistant blocks are made of tungsten steel YG8 cemented carbide with a size of 12 x 100mm, the wear-resistant blocks are connected with the end of the propeller by brazing, and the wear-resistant blocks are spirally distributed on the propeller blades at a pitch of 80-120 mm.
3. The wear resistant auger unearthing system of claim 1 wherein the housing is a carbon steel housing having a length of 5.0-6.0m, a width of 650mm, and a wall thickness of 10 mm.
4. The wear-resistant auger unearthing system of claim 1 wherein the power drive is a variable frequency motor located at the rear of the housing, the power drive rotating the auger about the center of the shaft.
5. The wear-resistant spiral unearthing system of claim 1, wherein the water injection cooling device is two tap water nozzles, and the flow rate is 20-30L/min.
6. The wear-resistant auger unearthing system of any one of claims 1 to 5, wherein the cross section of the feed hopper is an inverted frustum structure with a wide top and a narrow bottom, and the discharge port is arranged below the tail end of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019516.1U CN211839548U (en) | 2020-01-06 | 2020-01-06 | Wear-resistant spiral unearthing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019516.1U CN211839548U (en) | 2020-01-06 | 2020-01-06 | Wear-resistant spiral unearthing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211839548U true CN211839548U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020019516.1U Active CN211839548U (en) | 2020-01-06 | 2020-01-06 | Wear-resistant spiral unearthing system |
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|---|---|
| CN (1) | CN211839548U (en) |
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- 2020-01-06 CN CN202020019516.1U patent/CN211839548U/en active Active
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