Pyrolysis device adopting reinforced shaftless helical blade for conveying

Abstract

The invention discloses a pyrolysis device adopting reinforced shaftless spiral blades for conveying, and relates to a pyrolysis device adopting spiral conveying. The pyrolysis device is provided with a cylinder body, a spiral blade is arranged in the cylinder body, the front end of the cylinder body is connected with a driver, the front end of the cylinder body is provided with a feed port, the rear end of the cylinder body is provided with a discharge port, the cylinder body is provided with a negative pressure gas guide cylinder, the outer wall of the cylinder body is provided with a heating layer, and the spiral blade in the cylinder body is a reinforced shaftless spiral blade. The reinforcing rib is a through rib or a short rib or a combination of the through rib and the short rib. The pyrolysis device has the advantages that various types of materials can be conveyed, the material conveying capacity is high, and particularly, the high-temperature pyrolysis material conveying capacity is high; materials can be automatically stir-fried during working; scales on the spiral blade and the barrel or the inner wall of the pipeline are less; the service life is long; the intermittent use frequency is high. The pyrolysis device has popularization value.

Description

TECHNICAL FIELD

[0001] The present application relates to a screw conveying pyrolysis device, more particularly to a screw conveying pyrolysis device using a reinforced shaftless spiral blade. BACKGROUND

[0002] Among the hazardous waste, there are many oil-containing waste, sludge, oil feet, residues, sludge, waste, slurry, which not only have a large quantity, but also are very difficult to handle and have high processing cost. Previously, the oil-containing hazardous waste was mainly treated by pressing, incineration and landfill technology. The oil content is still high after pressing treatment, the oil content is lower after incineration treatment, but the smoke and fly ash are large, the secondary pollution is heavy, and the oil resources cannot be recovered; the landfill treatment needs to occupy a large amount of land, pollutes the surrounding environment and leaves a major hidden danger. On October 01, 2022, the first inventor of the present application invented an oil-containing hazardous waste electromagnetic heating oxygen-free pyrolysis device, patent number ZL 2022226145721. The device uses shafted spiral blades, which can effectively treat hazardous waste, but some problems are found when the device is used, especially intermittently. First, the shafted spiral blade conveying has great limitations, mainly for granular materials, many cold, hot, dry and dilute materials cannot be conveyed, and the material conveying efficiency is low. Second, the spiral blade cannot automatically stir the material. Third, the spiral blade and the inner wall of the cylinder or the pipeline are prone to scale, which is difficult to remove and difficult to use intermittently. The use of ordinary shaftless spiral blades cannot overcome the problems existing in the use of shafted spiral blades, and at the same time, the use of ordinary shaftless spiral blades also increases the problem of poor mechanical strength. In order to overcome the shortcomings of the existing screw conveying pyrolysis device and improve the use effect of the screw conveying pyrolysis device, it is necessary to explore a screw conveying pyrolysis device using reinforced shaftless spiral blades. SUMMARY

[0003] The purpose of the present application is to provide a pyrolysis device using reinforced shaftless spiral blade conveying.

[0004] The technical scheme of the present application is a pyrolysis device using reinforced shaftless spiral blade conveying, which is provided with a cylinder, a spiral blade is arranged in the cylinder, a drive is connected to the front end of the cylinder, a feed inlet is arranged at the front end of the cylinder, a discharge outlet is arranged at the rear end of the cylinder, a negative pressure air guide cylinder is arranged on the cylinder, and a heating layer is arranged on the outer wall of the cylinder. The characteristic is that the spiral blade in the cylinder is a reinforced shaftless spiral blade, the input end of the reinforced shaftless spiral blade is connected with the drive, and the output end of the reinforced shaftless spiral blade is connected with the shaft coupling on the cylinder. The reinforced shaftless spiral blade is provided with reinforcing ribs on the shaftless spiral blade. The reinforcing ribs are through ribs, short ribs or a combination of through ribs and short ribs.

[0005] Optimization, the pyrolysis device of the reinforced non-axial spiral blade conveying, the reinforcing rib is arranged along the length direction of the reinforced non-axial spiral blade, and is parallel to the central axis of the reinforced non-axial spiral blade.

[0006] Optimization, the pyrolysis device of the reinforced non-axial spiral blade conveying, the reinforcing rib is arranged along the length direction of the reinforced non-axial spiral blade, and is parallel to the central axis of the reinforced non-axial spiral blade.

[0007] Optimization, the pyrolysis device of the reinforced non-axial spiral blade conveying, the reinforcing rib is arranged along the length direction of the reinforced non-axial spiral blade, and is parallel to the central axis of the reinforced non-axial spiral blade.

[0008] Optimization, the pyrolysis device of the reinforced non-axial spiral blade conveying, the reinforcing rib is arranged along the length direction of the reinforced non-axial spiral blade, and is parallel to the central axis of the reinforced non-axial spiral blade.

[0009] The reinforced non-axial spiral blade in the present application can be made of ordinary carbon steel, stainless steel, manganese steel, magnetically conductive steel and other metal materials, can be first cold-rolled into a spiral blade, then the reinforcing rib is welded on the spiral blade, and finally the input end and the output end are fixedly connected on both ends of the spiral blade.

[0010] The continuous rib in the present application refers to the reinforcing rib arranged on the reinforced non-axial spiral blade, which is continuous from the input end to the output end; the short rib refers to the reinforcing rib with a short section of 1-10 pitch lengths.

[0011] When welding the reinforcing rib in the form of a continuous rib, an opening is needed to be formed on the edge of the spiral blade, the continuous rib is embedded in the opening, and is welded and fixed. When welding the short rib with a pitch length, the short rib can be directly welded on the blade between two pitches. When welding the short rib with a length of 2-10 pitches, an opening is needed to be formed on the edge of the spiral blade, the short rib is embedded in the opening, and is welded and fixed. The reinforced non-axial spiral blade can be welded and fixed with both the continuous rib and the short rib.

[0012] The reinforced non-axial spiral blade in the present application can be made of ordinary carbon steel, stainless steel, manganese steel, magnetically conductive steel and other metal materials, can be first cold-rolled into a spiral blade, then the reinforcing rib is welded on the spiral blade, and finally the input end and the output end are fixedly connected on both ends of the spiral blade.

[0013] The reinforced non-axial spiral blade in the present application can be made of ordinary carbon steel, stainless steel, manganese steel, magnetically conductive steel and other metal materials, can be first cold-rolled into a spiral blade, then the reinforcing rib is welded on the spiral blade, and finally the input end and the output end are fixedly connected on both ends of the spiral blade.

[0014] The reinforced shaftless spiral blade in the application can improve the mechanical strength of the shaftless spiral blade, reduce the mechanical deformation of the shaftless spiral blade, scrape the adhering objects on the inner wall of the cylinder or pipeline, and prevent the adhering objects from forming scale on the inner wall of the cylinder or pipeline.

[0015] The reinforced shaftless spiral blade in the application effectively solves the problems of deformation, scale formation, automatic stirring of materials, mechanical wear, low material transfer efficiency, limitation of material conveying, temperature of working environment, and installation limitation.

[0016] In the application, the heating layer can be an electric resistance heater, an electromagnetic heater, or a fire heater. If the heating layer adopts an electromagnetic heater, the cylinder and the reinforced shaftless spiral blade need to be made of magnetically conductive steel. The heating layer outside the cylinder is composed of a heat insulation layer, an electromagnetic heating coil, and a protective layer in sequence. The heat insulation layer prevents the cylinder from burning out the electromagnetic heating coil after being heated. The protective layer outside the electromagnetic heating coil is to protect the electromagnetic heating coil from being damaged.

[0017] The working principle of the application is as follows: the heating layer heats the cylinder, the reinforced shaftless spiral blade, and the materials; the driver drives the reinforced shaftless spiral blade to rotate and push the materials forward; under the conditions of negative pressure and oxygen-free, the materials are subjected to oxygen-free pyrolysis after being heated; the gas, water vapor, and a small amount of dust are sucked out from the negative pressure gas guide cylinder under negative pressure and enter the subsequent processor; and the dry residue is discharged from the discharge port into the subsequent residue discharge tank.

[0018] The pyrolysis device adopting the reinforced shaftless spiral blade for conveying can be connected in series or in parallel to improve the processing effect.

[0019] In the test of the pyrolysis device adopting the reinforced shaftless spiral blade for conveying, various wastes such as oil-containing iron slag, oil-containing steel slag, oil-containing sludge, oil refining foot slag, oil-containing and petroleum-containing sludge, oil-containing paint slag, medical solid waste, kitchen waste, and living organic waste are processed. The test results show that the oil content of the dry residue after processing of various wastes is less than 3‰, meeting the requirements of GB4284-2018 "Standard for Pollution Control of Agricultural Sludge". The hygienic indicators of the sludge product also meet the requirements of GB4284-2018 "Standard for Pollution Control of Agricultural Sludge". After the treatment of hazardous waste, the amount of dry residue is greatly reduced. The dry residue after processing can be used for farmland, building materials, or directly discharged.

[0020] The pyrolysis device using the reinforced shaftless spiral blade conveying of the present application is intermittent in use.

[0021] The pyrolysis device using the reinforced shaftless spiral blade conveying of the present application has five advantages compared with the oil-containing hazardous waste electromagnetic heating oxygen-free pyrolysis device of ZL2022226145721: first, the former can transport more types of materials than the latter, and the former has a much higher material conveying capacity, especially for high-temperature pyrolysis materials; second, the former can automatically stir the materials during work, while the latter cannot; third, the former has much less fouling on the spiral blade and the inner wall of the cylinder or pipeline than the latter; fourth, the service life of the former is much longer than that of the latter; and fifth, the intermittent use frequency of the former is much higher than that of the latter. The pyrolysis device using the reinforced shaftless spiral blade conveying of the present application has promotional value. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application; Figure 2 is Figure 1 is the A-A sectional view; Figure 3 is a structural schematic diagram of the reinforced shaftless spiral blade in embodiment 2; Figure 4 is a structural schematic diagram of the reinforced shaftless spiral blade in embodiment 4; Markings in the figure: input end 1, reinforced shaftless spiral blade 2, reinforcing rib 3, output end 4, discharge port 5, cylinder 6, feed port 7, driver 8, heating layer 9, negative pressure air guide cylinder 10. DETAILED DESCRIPTION

[0023] The present application will be further described below through examples. Example 1

[0024] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4The pyrolysis device with reinforced shaftless spiral blade conveying is provided with a cylinder 6, spiral blades are arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6, wherein the spiral blades in the cylinder 6 are reinforced shaftless spiral blades 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected with the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected with a shaft coupling on the cylinder 6, the reinforced shaftless spiral blade 2 is provided with reinforcing ribs 3 on the shaftless spiral blade, and the reinforcing ribs 3 are through ribs, short ribs or a combination of through ribs and short ribs. Example 2

[0025] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 The pyrolysis device with reinforced shaftless spiral blade conveying is provided with a cylinder 6, spiral blades are arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6, wherein the spiral blades in the cylinder 6 are reinforced shaftless spiral blades 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected with the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected with a shaft coupling on the cylinder 6, the reinforced shaftless spiral blade 2 is provided with reinforcing ribs 3 on the shaftless spiral blade, and the reinforcing ribs 3 are through ribs, short ribs or a combination of through ribs and short ribs. The reinforcing ribs 3 are arranged along the length direction of the reinforced shaftless spiral blade 2 and are parallel to the central axis of the reinforced shaftless spiral blade 2. Example 3

[0026] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 The pyrolysis device with reinforced shaftless spiral blade conveying is provided with a cylinder 6, spiral blades are arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6, wherein the spiral blades in the cylinder 6 are reinforced shaftless spiral blades 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected with the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected with a shaft coupling on the cylinder 6, the reinforced shaftless spiral blade 2 is provided with reinforcing ribs 3 on the shaftless spiral blade, and the reinforcing ribs 3 are through ribs, short ribs or a combination of through ribs and short ribs. The reinforcing ribs 3 are arranged along the length direction of the reinforced shaftless spiral blade 2 and are parallel to the central axis of the reinforced shaftless spiral blade 2. Example 4

[0027] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 A pyrolysis device using reinforced shaftless spiral blade conveying is provided with a cylinder 6, a spiral blade is arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6. The spiral blade in the cylinder 6 is a reinforced shaftless spiral blade 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected to the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected to the shaft coupling on the cylinder 6. The reinforced shaftless spiral blade 2 is provided with a reinforcing rib 3 on the shaftless spiral blade. The reinforcing rib 3 is a through rib or a short rib or a combination of a through rib and a short rib. The reinforcing rib 3 is arranged along the length direction of the reinforced shaftless spiral blade 2 and has a right spiral shape with the central axis of the reinforced shaftless spiral blade 2. Example 5

[0028] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 A pyrolysis device using reinforced shaftless spiral blade conveying is provided with a cylinder 6, a spiral blade is arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6. The spiral blade in the cylinder 6 is a reinforced shaftless spiral blade 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected to the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected to the shaft coupling on the cylinder 6. The reinforced shaftless spiral blade 2 is provided with a reinforcing rib 3 on the shaftless spiral blade. The reinforcing rib 3 is a through rib or a short rib or a combination of a through rib and a short rib. The reinforcing rib 3 is arranged along the length direction of the reinforced shaftless spiral blade 2 and has a right spiral shape with the central axis of the reinforced shaftless spiral blade 2. Example 5

[0028] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 A pyrolysis device using reinforced shaftless spiral blade conveying is provided with a cylinder 6, a spiral blade is arranged in the cylinder 6, a driver 8 is connected to the front end of the cylinder 6, a feeding port 7 is arranged at the front end of the cylinder 6, a discharging port 5 is arranged at the rear end of the cylinder 6, a negative pressure air guide cylinder 10 is arranged on the cylinder 6, and a heating layer 9 is arranged on the outer wall of the cylinder 6. The spiral blade in the cylinder 6 is a reinforced shaftless spiral blade 2, the input end 1 of the reinforced shaftless spiral blade 2 is connected to the driver 8, and the output end 4 of the reinforced shaftless spiral blade 2 is connected to the shaft coupling on the cylinder 6. The reinforced shaftless spiral blade 2 is provided with a reinforcing rib 3 on the shaftless spiral blade. The reinforcing rib 3 is a through rib or a short rib or a combination of a through rib and a short rib. The reinforcing rib 3 is arranged along the length direction of the reinforced shaftless spiral blade 2 and has a right spiral shape with the central axis of the reinforced shaftless spiral blade 2.

Claims

1. A pyrolysis device using reinforced shaftless spiral blades for conveying, comprising a cylinder (6), spiral blades inside the cylinder (6), a driver (8) connected to the front end of the cylinder (6), a feed inlet (7) at the front end of the cylinder (6), a discharge outlet (5) at the rear end of the cylinder (6), a negative pressure air guide cylinder (10) on the cylinder (6), and a heating layer (9) on the outer wall of the cylinder (6), characterized in that: The spiral blade inside the cylinder (6) is a reinforced shaftless spiral blade (2). The input end (1) of the reinforced shaftless spiral blade (2) is connected to the driver (8), and the output end (4) of the reinforced shaftless spiral blade (2) is connected to the coupling on the cylinder (6). The reinforced shaftless spiral blade (2) is provided with reinforcing ribs (3) on the shaftless spiral blade. The reinforcing ribs (3) are through ribs, short ribs, or a combination of through ribs and short ribs.

2. The pyrolysis device using reinforced shaftless helical blades for conveying as described in claim 1, characterized in that: The reinforcing rib (3) is arranged along the length direction of the reinforcing shaftless spiral blade (2) and is parallel to the central axis of the reinforcing shaftless spiral blade (2).

3. The pyrolysis device using reinforced shaftless helical blades for conveying according to claim 1, characterized in that: The reinforcing rib (3) is arranged along the length direction of the reinforcing shaftless spiral blade (2) and is in a left spiral shape with respect to the central axis of the reinforcing shaftless spiral blade (2).

4. The pyrolysis device using reinforced shaftless helical blades for conveying according to claim 1, characterized in that: The reinforcing rib (3) is arranged along the length direction of the reinforcing shaftless spiral blade (2) and is in a right-hand spiral shape with the central axis of the reinforcing shaftless spiral blade (2).

5. The pyrolysis device using reinforced shaftless helical blades for conveying according to any one of claims 1-4, characterized in that: The reinforcing rib (3) is located on the outer edge of the reinforced shaftless spiral blade (2), and the reinforcing rib (3) is a through rib.

Images