Coal ball extrusion apparatus

An extrusion device and briquette technology, which is applied in the petroleum industry, presses, solid fuels, etc., can solve the problems of high density extrusion, easy loosening, poor use effect, etc.

Inactive Publication Date: 2011-11-02
CHANGZHOU SHENGFA BULB FACTORY
11 Cites 3 Cited by

AI-Extracted Technical Summary

Problems solved by technology

This kind of extruded briquettes is either easy to loose, or the density is high and the...
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Method used

With reference to Fig. 2, the pitch L4 of the helical blade of feeding preload section S4 is greater than the helical pitch L3 of the helical blade of supercharging section S3, and the helical pitch L3 of the helical blade of supercharging section S3 is greater than that of the helical blade of extrusion melting section S2 The screw pitch L2, the screw pitch L2 of the helical blades in the extruding and melting section S2 is greater than the screw pitch L1 of the helical blades in the homogenizing section S1. The relationship between the outer diameter and pitch of each helical blade is: the pitch of the helical blade in the feeding pre-compression section S1 is 0.3-0.5 times the outer diameter D1 ...
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Abstract

The invention discloses a coal ball extrusion apparatus. The apparatus is characterized in that: a workbench is provided with a motor; an output terminal of the motor is connected with a decelerator; the output terminal of the decelerator is connected with a propulsion shaft; the propulsion shaft is provided with a feeding prepress segment, a pressurizing segment, an extrusion fusion segment and a homogenization segment which are composed of spiral blades; the external diameter D1 of the spiral blades of the feeding prepress segment is greater than the external diameter D2 of the spiral blades of the pressurizing segment, the extrusion fusion segment and the homogenization segment; two ends of the propulsion shaft is assembled in a wring cylinder; an upper end at the front of the wring cylinder is communicated with a coal inlet; a wring tooth shaft is arranged in the coal inlet; the wring tooth shaft is provided with wring teeth; the wring tooth shaft is connected with the output terminal of the decelerator through a transmission device; an exit of the wring cylinder is provided with a coal extrusion plate with a through hole; a main shaft out of the coal extrusion plate is provided with a cutter; and the main shaft of the external cutter is fixedly provided with a roller which is provided with an opening at one end.

Application Domain

Solid fuelsShaping press

Technology Topic

CoalEngineering +2

Image

  • Coal ball extrusion apparatus
  • Coal ball extrusion apparatus
  • Coal ball extrusion apparatus

Examples

  • Experimental program(1)

Example Embodiment

[0010] Reference figure 1 , In the briquettes extrusion device of the present invention, a motor 2 is provided on the workbench 1, the output end of the motor 2 is connected to the reducer 3, and the output end of the reducer 3 is connected to the propulsion shaft 5 ( figure 1 Only schematically shows the structure of the propulsion shaft). The propulsion shaft is provided with a feeding pre-compression section S4, a pressurizing section S3, an extrusion melting section S2 and a homogenization section S1 composed of spiral blades, and the feeding pre-compression The outer diameter D1 of the spiral blades of the section S4 is larger than the outer diameter D2 of the spiral blades of the pressurizing section, the extrusion melting section and the homogenizing section. The two ends of the propulsion shaft are assembled in the winch cylinder 4. The upper front end of the winch cylinder 4 communicates with the coal inlet 6. The coal inlet 6 is provided with a cutter gear shaft 7, and the cutter gear shaft 7 is provided with a cutter The gears and the cutter gear shaft are connected to the output end of the reducer through the transmission device. The exit of the cutter cage is provided with a coal squeezing plate 8 with a through hole. The main shaft at the outer end of the coal squeezing plate is provided with a cutter 9 and the outer end of the cutter A roller 10 with an open end is fixed on the main shaft.
[0011] Reference figure 2 , The propeller shaft 5 is provided with a feeding pre-compression section S4, a pressurizing section S3, an extrusion melting section S2 and a homogenization section S1 composed of spiral blades. The homogenization section S1 is used to make the coal material evenly distributed and to perform initial extrusion of the coal material. The extrusion melting section S2 forcibly squeezes and agitates the coal, and the pressurization section S3 applies greater pressure to the coal that has been extruded by the extrusion melting section S2, that is, further squeezes the coal. , So that the liquid contained in the coal is completely squeezed out. The feed pre-compression section S4 sends the slag obtained from the coal material extruded by the first three sections to the outside of the extrusion equipment.
[0012] Reference figure 2 , Between the feeding pre-compression section S4 and the pressurization section S3, as well as between the pressurization section S3 and the extrusion melting section S2, and between the extrusion melting section S2 and the homogenization section S1 are provided with slits with through holes 式 resistance plate 50. The through holes on the resistance plate can be single-turn or multi-turn annular distribution. The diameter of the through hole of the split resistance plate 50 is 0.3-0.7 times the radial height of the spiral blade of the feed pre-compression section. In this embodiment, 0.5 times is preferred. The shape of the through hole can be circular or tapered. The striped resistance plate 50 can uniformly disperse the coal material, and the coal material flows to the next section evenly and orderly through the through holes in the form of a strip, so as to prevent the coal material from forming a state of accumulation during extrusion.
[0013] Reference figure 2 , The outer diameter of the spiral blades of the feed pre-compression section S4 increases from small to large, that is, a conical transition from small to large is formed. The minimum outer diameter of the spiral blades of the feed pre-compression section S4 is larger than that of the other spiral blades. path. That is, the outer diameter D1 of the spiral blade of the feeding pre-compression section S4 is larger than the outer diameter D2 of the spiral blade of the pressurizing section S3, the extrusion melting section S2, and the homogenizing section S1. Through the change of the outer diameter, it is used to change the extrusion density of the coal material to generate different extrusion pressures, so that the liquid contained in the coal material starts to be squeezed out in the homogenization section S1.
[0014] Reference figure 2 , The pitch L4 of the spiral blade of the feeding pre-compression section S4 is greater than the pitch L3 of the spiral blade of the pressurizing section S3, and the pitch L3 of the spiral blade of the pressurizing section S3 is greater than the pitch L2 of the spiral blade of the squeezing and melting section S2. The pitch L2 of the spiral blade of the segment S2 is greater than the pitch L1 of the spiral blade of the homogenizing segment S1. The relationship between the outer diameter of each segment of the spiral blade and the pitch is: the pitch of the spiral blade of the feeding pre-compression section S1 is 0.3-0.5 times the outer diameter D1 of the spiral blade. The radial front height of the spiral blade of the feeding precompression section is 0.15-0.25 times the outer diameter D1 of the spiral blade. The pitch of the spiral blade in the pressurizing section is 0.5-0.7 times the outer diameter D2 of the spiral blade. The pitch of the spiral blade of the extruded melting section is 0.35-0.6 times the outer diameter D2 of the spiral blade. The pitch of the spiral blade of the homogenization section is 0.2-0.3 times the outer diameter D2 of the spiral blade. By setting the pitch, the coal material can be prevented from clogging during the extrusion process, which is conducive to the normal flow of the coal material.
[0015] Reference figure 2 The flank angle α of the spiral blade of the feeding pre-compression section is 14°-20°, and in this embodiment, α is preferably 16°. The flank angle β of the spiral blades of the pressure-increasing section, the squeezing-melting section and the homogenizing section are all 14°-18°, and β is preferably 15° in this embodiment. By setting the angle of each segment of the flank angle, it is beneficial to exert a radial crushing force on the coal, so that the liquid contained in the coal is quickly released.

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