CN115646611B - Multistage inorganic matter screening pretreatment method and system for high-primary living garbage - Google Patents
Multistage inorganic matter screening pretreatment method and system for high-primary living garbage Download PDFInfo
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- CN115646611B CN115646611B CN202211321176.8A CN202211321176A CN115646611B CN 115646611 B CN115646611 B CN 115646611B CN 202211321176 A CN202211321176 A CN 202211321176A CN 115646611 B CN115646611 B CN 115646611B
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 150
- 238000012216 screening Methods 0.000 title claims abstract description 48
- 238000002203 pretreatment Methods 0.000 title abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000007664 blowing Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000004056 waste incineration Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 63
- 229910052742 iron Inorganic materials 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000007790 scraping Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 238000000855 fermentation Methods 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000007873 sieving Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 19
- 239000000126 substance Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000010806 kitchen waste Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Abstract
The invention relates to the field of plateau garbage combustion pretreatment, and discloses a multistage inorganic matter screening pretreatment method for high-primary living garbage, which comprises the following steps: s1: fermenting the highland garbage; s2: drying; s3: pre-crushing garbage; s4: inorganic matter primary screening; s5: screening out metal garbage; s6: fine screening inorganic matters; the inclined drum screen is adopted to transfer garbage, small-volume inorganic matters are screened out, a blowing mechanism is arranged, the transmission of the garbage is quickened, and the large-volume inorganic matters are exposed, so that the large-volume inorganic matters are screened out; s7: finely crushing garbage; s8: waste incineration; and (5) putting the finely crushed garbage into an incinerator for incineration. Firstly heating the garbage, on one hand drying the water in the garbage, and on the other hand heating the inorganic matters to ensure that the inorganic matters are easier to crush, so that when the garbage is primarily crushed, the inorganic matters are crushed into smaller volumes relative to the common garbage, thereby ensuring that the inorganic matters and the household garbage form a volume difference, and being convenient for sieving and removing the inorganic matters.
Description
Technical Field
The invention relates to the technical field of highland garbage combustion pretreatment, in particular to a multistage inorganic matter screening pretreatment method and system for high-primary living garbage.
Background
The plateau refers to a wide area with a height of more than 500 meters, the land is relatively flat or has a certain fluctuation, the land is wide and thin, so the domestic garbage and kitchen waste in the plateau garbage are relatively less, the inorganic matters or metal garbage are relatively more in quantity than the plain area, such as glass, iron sheets and the like, the inorganic matters and the metal garbage are mixed into the garbage, the burning heat value of the garbage is affected when the garbage is burnt, the combustion rate of the plateau garbage is reduced, therefore, the pretreatment of the plateau garbage is a necessary procedure before the combustion, however, the conventional pretreatment device for the plain garbage is not suitable for the treatment of the plateau garbage, mainly comprises the domestic garbage and kitchen waste, the content of the inorganic matters is relatively low, the inorganic matters are not treated pertinently, the conventional treatment device for the domestic garbage has weak treatment capability for the inorganic matters, and the inorganic matters in the garbage cannot be effectively removed, so the high-efficiency treatment for the inorganic matters and the metal garbage in the garbage is the key point of the plateau garbage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method and a system for screening and preprocessing high-primary living garbage multi-level inorganic matters, which are used for solving the problems in the prior art.
The aim of the invention is realized by the following technical scheme: the utility model provides a multistage inorganic matter screening pretreatment systems of high primary garbage, includes the promotion conveyer, the output port of promotion conveyer is located just above the primary crushing device feed port, the primary crushing device discharge port is located just above the conveyer belt feed end, the conveyer belt fretwork setting of conveyer belt, be provided with the vibration exciter on the conveying support of conveyer belt, the discharge port of conveyer belt is located just above the deironing device feed port, the feed port of inorganic matter fine screen device is connected to the discharge port of deironing device, the feed port of fine screen device is connected to the feed port of fine crushing device, the feed port of incinerator is connected to the discharge port of fine crushing device;
the inorganic fine screen device comprises a fine screen shell and a rotary screen, the rotary screen is rotatably arranged in the fine screen shell, the rotary screen is obliquely arranged, the rotary screen is higher than the other end of the iron removing device and is in a circular ring shape in radial section, a plurality of screen holes are formed in the surface of the rotary screen, the rotary screen is rotatably connected with a feed pipe near the middle of one end of the iron removing device, the feed pipe is fixedly arranged on the fine screen shell, the axis of the feed pipe is parallel to the axis of the rotary screen, a blowing mechanism is arranged on the fine screen shell and is provided with three blowing paths, namely a path along the axial direction in the rotary screen, a path along the radial direction below the rotary screen and a path along the axial direction below the rotary screen,
the utility model provides a discharge screen, including the drum sieve, the inlet pipe is connected to the air-out port, the inlet pipe is worn out to the inlet pipe, the inlet pipe is worn out to the first path pipe, the inlet pipe is connected with the main tuber pipe, the second path pipe is located the below of drum sieve, the second path pipe is provided with a plurality ofly, the axial perpendicular to of second path pipe the axial of drum sieve, a plurality of second path pipe is followed the axial of drum sieve is evenly arranged, the second path pipe is kept away from the one end of drum sieve with the main tuber pipe is connected, the third path pipe is located the below of drum sieve, the axial of third path pipe is parallel to the axial of drum sieve, the third path pipe is provided with a plurality ofly the third path pipe is followed the direction of height of drum sieve casing, a plurality of third path pipe is followed the axial of drum sieve is evenly distributed the drum sieve is equipped with the discharge screen has the discharge screen window to be close to between the drum sieve inner wall of drum sieve and the drum sieve.
In some embodiments, a bearing seat is fixed at the inner top of the fine screen shell, the rotary screen is rotatably arranged on the bearing seat through a bearing, a gear is fixedly sleeved at the middle part of the rotary screen, a motor is mounted at the inner top of the fine screen shell, a driving gear is arranged on an output shaft of the motor, and the driving gear is meshed with the gear.
In some embodiments, the iron removing device comprises an iron removing shell and a magnetic roller, wherein the magnetic roller is rotatably arranged in the iron removing shell, a blanking channel is formed between one side of the magnetic roller and the inner wall of the iron removing shell, and a feeding port of the iron removing shell is positioned right above the blanking channel.
In some embodiments, a scraping plate is arranged at the bottom of the magnetic roller, a metal blanking channel is formed between one side, away from the blanking channel, of the scraping plate and the inner wall of the iron removing shell, a stepping motor is arranged on the outer wall of the iron removing shell, and an output shaft of the stepping motor is in transmission connection with a roller shaft of the magnetic roller.
In some embodiments, the primary crushing device comprises a crushing shell and a crushing roller, two groups of crushing rollers are rotatably arranged in the crushing shell and are arranged along the horizontal direction at intervals, a feeding port and a discharging port of the crushing shell are respectively formed above and below the crushing roller, a plurality of crushing cutterheads are fixedly sleeved on the crushing roller and are arranged at equal intervals along the axial direction of the crushing roller, two crushing cutterheads on the crushing roller are arranged in a staggered manner, a roller shaft of the crushing roller penetrates out of the crushing shell and is connected with a transmission gear, two transmission gears on the crushing roller are meshed, a belt pulley is arranged on the roller shaft of the crushing roller and positioned on the outer side of the crushing shell, a driving motor is arranged on the outer wall of the crushing shell, a driving belt pulley is arranged on an output shaft of the driving motor and is in transmission connection with the belt pulley through a belt, and the structure of the fine crushing device is identical with that of the primary crushing device.
In some embodiments, the lifting conveyor comprises a conveying shell obliquely arranged and an auger conveying mechanism arranged in the conveying shell, a heating space is formed between the outer wall and the inner wall of the conveying shell, a plurality of electric heating rings are arranged in the heating space, and the electric heating rings are uniformly distributed along the axial direction of the conveying shell.
A multi-stage inorganic screening pretreatment method for high-primary living garbage comprises the following steps:
s1: fermenting the highland garbage; fermenting the highland garbage in a filling pool for ten days;
s2: drying; lifting and conveying garbage in the fermentation tank by a lifting conveyor, removing water by gravity in the conveying process, drying, and improving the temperature of inorganic matters, so that the inorganic matters are more easily crushed under the temperature difference;
s3: pre-crushing garbage; the dried highland garbage is primarily crushed in a shredding mode, so that inorganic matters and household garbage have larger size difference;
s4: inorganic matter primary screening; conveying the primarily crushed garbage through a conveying belt, wherein the conveying surface of the conveying belt is hollowed out, and inorganic matters with smaller sizes are screened out in the conveying process;
s5: screening out metal garbage; the metal in the garbage is adsorbed and collected by utilizing a rotating magnetic roller with strong magnetism;
s6: fine screening inorganic matters; the inclined drum screen is adopted to transfer garbage, small-volume inorganic matters are screened out, a blowing mechanism is arranged, the transmission of the garbage is quickened, the large-volume inorganic matters are exposed, and therefore the large-volume inorganic matters are screened out, and the small-volume inorganic matters are further screened out;
s7: finely crushing garbage;
s8: waste incineration; and (5) putting the finely crushed garbage into an incinerator for incineration.
In some embodiments, the particle size of the waste after primary crushing in step S3 is 10cm-30cm, and the particle size of the waste after fine crushing in step S7 is 10-15mm.
The beneficial effects of the invention are as follows:
1. firstly heating garbage, on the one hand drying water in the garbage, on the other hand heating up inorganic matters to enable the inorganic matters to be more easily crushed, and the primary crushing device adopts a shredding mode to pre-crush the garbage, the fragile inorganic matters collide on a crushing roller and can be crushed into smaller volumes relative to common garbage, so that the inorganic matters and the household garbage form a poor volume, and the small-volume inorganic matters are conveniently screened down when conveyed on a conveyor belt, so that the primary screening of the inorganic matters is completed.
2. The inorganic matters are further screened out through the rotary screen, the screen holes of the rotary screen are used for screening out the inorganic matters with smaller volumes, the household garbage in the rotary screen is blown up through the second path pipe, then the blown household garbage is conveyed forwards through the first path pipe, so that the massive inorganic matters and the household garbage generate different conveying speeds, the household garbage is discharged from the discharge window at a sufficient speed, the inorganic matters are discharged from the inorganic matter blanking space, the screening out of the massive inorganic matters is finished, the inorganic matters are screened out by utilizing the weight difference of the massive inorganic matters and the household garbage, the screening out effect of the inorganic matters is greatly improved, and the method is suitable for the pre-treatment of the plateau garbage.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a multi-stage mineral screening pretreatment system for high-primary living garbage according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of an inorganic fine screening device in a high-primary-activity garbage multi-stage inorganic screening pretreatment system;
FIG. 3 is a schematic diagram of the internal structure of an iron removal device in the multi-stage mineral screening pretreatment system for high-primary garbage;
FIG. 4 is a schematic diagram of the internal structure of the primary crushing device in the multi-stage mineral screening pretreatment system for high-primary garbage;
FIG. 5 is a schematic diagram showing the internal structure of a conveying shell in a high-primary-garbage multi-stage mineral screening pretreatment system according to the present invention;
in the figure, 1-lifting conveyor, 2-primary crushing device, 3-conveyor belt, 4-deironing device, 5-inorganic fine screen device, 6-fine crushing device, 7-incinerator, 8-vibration exciter, 9-fine screen shell, 10-drum screen, 11-sieve mesh, 12-feed pipe, 13-high-pressure blower, 14-first path pipe, 15-second path pipe, 16-third path pipe, 17-main air pipe, 18-inorganic blanking space, 19-discharge window, 20-bearing seat, 21-gear, 22-motor, 23-drive gear, 24-deironing shell, 25-magnetic drum, 26-blanking channel, 27-scraping plate, 28-metal blanking channel, 29-crushing shell, 30-crushing roller, 31-crushing cutter head, 32-transmission gear, 33-belt pulley, 34-drive motor, 35-driving belt pulley, 36-conveying shell, 37-push plate and 38-cylinder.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
A multi-stage inorganic screening pretreatment method for high-primary living garbage comprises the following steps:
s1: fermenting the highland garbage; fermenting the highland garbage in a filling pool for ten days;
s2: drying; lifting and conveying garbage in the fermentation tank by a lifting conveyor, removing water by gravity in the conveying process, drying, improving the temperature of inorganic matters, and enabling the inorganic matters to be more easily broken under the temperature difference;
s3: pre-crushing garbage; the dried highland garbage is primarily crushed in a shredding mode, so that inorganic matters and household garbage have larger size difference;
s4: inorganic matter primary screening; conveying the primarily crushed garbage through a conveying belt, wherein the conveying surface of the conveying belt is hollowed out, and inorganic matters with smaller sizes are screened out in the conveying process;
s5: screening out metal garbage; the metal in the garbage is adsorbed and collected by utilizing a rotating magnetic roller with strong magnetism;
s6: fine screening inorganic matters; the inclined drum screen is adopted to transfer garbage, small-volume inorganic matters are screened out, a blowing mechanism is arranged, the transmission of the garbage is quickened, the large-volume inorganic matters are exposed, and therefore the large-volume inorganic matters are screened out, and the small-volume inorganic matters are further screened out;
s7: finely crushing garbage;
s8: waste incineration; and (5) putting the finely crushed garbage into an incinerator for incineration.
The effect of above-mentioned scheme is: the garbage is lifted and conveyed through the lifting conveyor, and is dried and heated, on one hand, moisture in the garbage is dried, and on the other hand, inorganic matters are heated, so that the inorganic matters are more easily crushed, the primary crushing device adopts a shredding mode to pre-crush the garbage, the fragile inorganic matters collide on the crushing roller and can be crushed into smaller volumes relative to common garbage, so that the inorganic matters and the household garbage form poor volumes, and the small-volume inorganic matters are conveniently screened down when conveyed on the conveyor belt, so that the primary screening of the inorganic matters is completed.
Preferably, the particle size of the garbage after primary crushing in the step S3 is 10cm-30cm, so that the primary crushing is finished, and inorganic matters and metal matters can be conveniently screened; and (7) finely crushing the garbage in the step (S7) to obtain the garbage with the particle size of 10-15mm, and finely crushing the screened garbage to fully burn the garbage.
As shown in fig. 1 to 5, a multistage inorganic matter screening pretreatment system for high primary garbage comprises a lifting conveyor 1, wherein an output port of the lifting conveyor 1 is positioned right above a feed port of a primary crushing device 2, a discharge port of the primary crushing device 2 is positioned right above a feed port of a conveying belt 3, the conveying belt of the conveying belt 3 is hollowed out, an exciter 8 is arranged on a conveying support of the conveying belt 3, the discharge port of the conveying belt 3 is positioned right above a feed port of an iron removing device 4, the discharge port of the iron removing device 4 is connected with a feed port of an inorganic matter fine screening device 5, the discharge port of the inorganic matter fine screening device 5 is connected with a feed port of a fine crushing device 6, the discharge port of the fine crushing device 6 is connected with a feed port of an incinerator 7, the conveying belt 3 is vibrated by the exciter 8, and the garbage falling on the conveying belt 3 is scattered in a vibration mode, so that inorganic matters and metals in the garbage can be more easily passed through holes in the conveying belt due to vibration, and the crushed fine inorganic matters are screened out.
In some embodiments, as shown in fig. 2, the inorganic fine screen device 5 comprises a fine screen shell 9 and a rotary screen 10, the rotary screen 10 is rotatably arranged in the fine screen shell 9, the rotary screen 10 is obliquely arranged, the height of the rotary screen 10 near one end of the iron removing device 4 is higher than that of the other end, the radial section of the rotary screen 10 is in a circular ring shape, a plurality of screen holes 11 are formed on the surface of the rotary screen 10, the middle part of the rotary screen 10 near one end of the iron removing device 4 is rotatably connected with a feed pipe 12, the feed pipe 12 is fixedly arranged on the fine screen shell 9, the axis of the feed pipe 12 is parallel to the axis of the rotary screen 10, a blowing mechanism is arranged on the fine screen shell 9, the blowing mechanism has three blowing paths, namely a path along the axial direction in the rotary screen 10, a path along the radial direction below the rotary screen 10 and a path along the axial direction below the rotary screen 10, the blowing mechanism comprises a high-pressure blower 13, a first path pipe 14, a second path pipe 15 and a third path pipe 16, wherein the air outlet port of the high-pressure blower 13 is connected with a main air pipe 17, the first path pipe 14 is arranged on the inner top wall of the feeding pipe 12, one end of the first path pipe 14, which is far away from the drum screen 10, penetrates out of the feeding pipe 12 to be connected with the main air pipe 17, the second path pipe 15 is positioned below the drum screen 10, a plurality of second path pipes 15 are arranged, the axial direction of the second path pipes 15 is perpendicular to the axial direction of the drum screen 10, a plurality of second path pipes 15 are uniformly arranged along the axial direction of the drum screen 10, one end of the second path pipe 15, which is far away from the drum screen 10, is connected with the main air pipe 17, the third path pipe 16 is positioned below the drum screen 10, the axial direction of the third path pipe 16 is parallel to the axial direction of the drum screen 10, a plurality of third path pipes 16 are uniformly distributed along the height direction of the fine screen shell 9, an inorganic blanking space 18 is formed between the discharging end of the rotary screen 10 and the inner wall of the fine screen shell 9, and a discharging window 19 is formed on the side wall of the fine screen shell 9, which is close to the discharging end of the rotary screen 10; after the primarily crushed garbage enters the interior from the high end of the rotary screen 10 for further screening, the sieve holes 11 on the rotary screen 10 are used for leaking substances such as small-volume inorganic substances and metals, and the like, as the rotary screen 10 is obliquely arranged and rotates along the axis of the rotary screen, the garbage can be conveyed and scattered, fine inorganic substances and metals and the like can be conveniently screened down, the rotary screen 10 is further used for screening inorganic substances, meanwhile, the air generated by the high-pressure blower 13 is transmitted in the first path pipe 14, the second path pipe 15 and the third path pipe 16, the weight of the substances such as massive inorganic substances and metals is larger than that of the household garbage, the household garbage in the rotary screen 10 is blown up through the second path pipe 15, and then the blown household garbage is conveyed forwards through the first path pipe 14, so that the massive inorganic substances and the household garbage are different in conveying speed, the household garbage is discharged from the discharge window 19 at a sufficient speed, the inorganic substances are discharged from the inorganic substance blanking space 18, meanwhile, the inorganic substances are further discharged from the inorganic substance blanking space 16, the inorganic substances are discharged from the discharge window 19 of the rotary screen 16, the inorganic substances are discharged from the discharge window 19 by the high-speed garbage is further, and the inorganic substances are discharged from the discharge window 19 of the rotary screen 10 by the high-path pipe 15, and the material is blown into the large-volume garbage machine, and the large-volume garbage is discharged from the discharge window 19, and the large-volume garbage is discharged from the large garbage is different, and the garbage is discharged from the large-volume has no large-volume, and has the large-volume garbage is suitable for the large-volume garbage.
Further, as shown in fig. 2, a bearing seat 20 is fixed at the inner top of the fine screen shell 9, the rotary screen 10 is rotatably arranged on the bearing seat 20 through a bearing, a gear 21 is fixedly sleeved at the middle part of the rotary screen 10, a motor 22 is mounted at the inner top of the fine screen shell 9, a driving gear 23 is arranged on an output shaft of the motor 22, the driving gear 23 is meshed with the gear 21, the motor 22 drives the rotary screen 10 to rotate through the meshing of the driving gear 23 and the gear 21, so that garbage in the rotary screen 10 moves, and the garbage in the rotary screen 10 can be conveyed forwards for screening by matching with the inclined arrangement of the rotary screen 10.
In some embodiments, as shown in fig. 3, the iron removing device 4 comprises an iron removing shell 24 and a magnetic roller 25, the magnetic roller 25 is rotatably arranged in the iron removing shell 24, a blanking channel 26 is formed between one side of the magnetic roller 25 and the inner wall of the iron removing shell 24, a feeding port of the iron removing shell 24 is positioned right above the blanking channel 26, a conveyor belt 3 conveys the garbage of the primary screening into the iron removing shell 24, the garbage is discharged through the blanking channel 26, a push plate 37 is arranged in the blanking channel 26, the top end of the push plate 37 is hinged with the inner wall of the iron removing shell 24, one end of the lower end of the push plate 37, far away from the magnetic roller 25, is hinged with a cylinder 38, the cylinder body of the cylinder 38 is hinged on the inner wall of the iron removing shell 24, the push plate 37 is driven to do reciprocating deflection motion around the hinged position by the expansion and contraction of the cylinder 38, so that the garbage is pushed onto the magnetic roller 25, and partial screening of metal substances is completed by magnetic adsorption of the magnetic metal generated by the magnetic roller 25; the bottom of magnetic cylinder 25 is provided with scrapes flitch 27, scrapes and is formed with metal blanking passageway 28 between one side that the flitch 27 kept away from blanking passageway 26 and the inner wall of deironing casing 24, and the outer wall of deironing casing 24 is provided with step motor, and step motor's output shaft transmission connects the spool of magnetic cylinder 25, and the direction of rotation setting of magnetic cylinder 25 needs to make the adsorbed metal substance reverse keep away from blanking passageway 26 and rotate to in making the adsorbed metal substance scrape the back through scraping flitch 27 and can fall into metal blanking passageway 28, realize the circulation absorption of magnetic cylinder 25 to the metal substance.
In some embodiments, as shown in fig. 4, the primary grinding device 2 comprises a grinding shell 29 and grinding rollers 30, two groups of grinding rollers 30 are rotationally arranged in the grinding shell 29, the two groups of grinding rollers 30 are arranged at intervals along the horizontal direction, a feeding port and a discharging port of the grinding shell 29 are respectively formed above and below the grinding rollers 30, a plurality of grinding cutterheads 31 are fixedly sleeved on the grinding rollers 30, the plurality of grinding cutterheads 31 are arranged at equal intervals along the axial direction of the grinding rollers 30, the grinding cutterheads 31 on the two grinding rollers 30 are arranged in a staggered manner, the roller shafts of the grinding rollers 30 penetrate out of the grinding shell 29 and are connected with transmission gears 32, the transmission gears 32 on the two grinding rollers 30 are meshed, a belt pulley 33 is arranged on the roller shaft of one grinding roller 30, the belt pulley 33 is positioned on the outer side of the grinding shell 29, the outer wall of the crushing shell 29 is provided with a driving motor 34, an output shaft of the driving motor 34 is provided with a driving belt pulley 35, the driving belt pulley 35 is in transmission connection with a belt pulley 33 through a belt, the structure of the fine crushing device 6 is the same as that of the primary crushing device 2, the driving motor 34 drives the driving belt pulley 35 to rotate, the driving belt pulley 35 drives the belt pulley 33 to rotate through the belt, the belt pulley 33 drives a transmission gear 32 on one crushing roller 30 to rotate, the two crushing rollers 30 are enabled to rotate through the meshing of the two transmission gears 32, and the rotation directions are opposite, so that garbage is crushed, and when the garbage crushing device is implemented, the space between a crushing cutter disc 31 on one crushing roller 30 and the other crushing roller 30 of the primary crushing device 2 is 10cm-30cm, primary crushing is completed, and inorganic matters and metals are conveniently screened; in the fine crushing device 6, the space between the crushing cutter disc 31 on one crushing roller 30 and the other crushing roller 30 is 10mm-15mm, and the screened garbage is crushed, so that the garbage can be fully combusted.
In some embodiments, as shown in fig. 1 and 5, the lifting conveyor 1 comprises a conveying shell 36 which is obliquely arranged and an auger conveying mechanism which is arranged in the conveying shell 36, a heating space is formed between the outer wall and the inner wall of the conveying shell 36, a plurality of electric heating rings are arranged in the heating space, the electric heating rings are uniformly distributed along the axial direction of the conveying shell 36, the auger conveying mechanism comprises an auger shaft and a spiral conveying blade which is arranged on the auger shaft, the auger shaft is driven by a motor, a plurality of water filtering holes are arranged on the spiral conveying blade, so that when garbage is lifted, under the condition of gravity, water in the garbage flows into the bottom of the conveying shell 36 from the water filtering holes, a water storage pool is arranged at the bottom of the conveying shell 36, the waste water discharged is collected, the garbage inside the conveying shell 36 is heated through the electric heating ring, the garbage is dried, meanwhile, the inorganic matters are heated, cold air can be introduced into the crushing device 2, when the inorganic matters are discharged into the primary crushing device 2, the temperature of the inorganic matters is suddenly reduced, the inorganic matters are more easily damaged, the inorganic matters are crushed into small-volume inorganic matters through the collision of the crushing cutter disc 31, the submitting difference between the garbage and the inorganic matters is increased, the inorganic matters in the garbage are conveniently removed in a screening mode, the content of the inorganic matters in the highland garbage can be greatly reduced, the heat value of the highland garbage is improved, and the combustion efficiency and the combustion effect of the highland garbage are improved.
In the description of the present invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention; and those of ordinary skill in the art will appreciate that the benefits achieved by the present invention are merely better than those achieved by the current embodiments of the prior art in certain circumstances and are not intended to be the most excellent uses directly in the industry.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
1. The utility model provides a multistage inorganic matter screening pretreatment systems of high primary garbage, includes lift-type conveyer (1), its characterized in that, the output port of lift-type conveyer (1) is located just above the feed port of just smashing device (2), just smashing device (2) discharge port is located just above the feed port of conveyer belt (3), conveyer belt fretwork setting of conveyer belt (3), be provided with vibration exciter (8) on the conveying support of conveyer belt (3), the discharge port of conveyer belt (3) is located directly over the feed port of deironing device (4), the feed port of inorganic matter fine screen device (5) is connected to the discharge port of deironing device (4), the feed port of fine screen device (6) is connected to the discharge port of inorganic matter fine screen device (5), the feed port of incinerator (7) is connected to the discharge port of fine screen device (6).
The inorganic fine screen device (5) comprises a fine screen shell (9) and a rotary screen (10), the rotary screen (10) is rotatably arranged in the fine screen shell (9), the rotary screen (10) is obliquely arranged, the rotary screen (10) is close to one end of the iron removing device (4) and higher than the other end, the radial section of the rotary screen (10) is in a circular ring shape, a plurality of screen holes (11) are formed in the surface of the rotary screen (10), a feeding pipe (12) is rotatably connected to the middle part of the rotary screen (10) close to one end of the iron removing device (4), the feeding pipe (12) is fixedly arranged on the fine screen shell (9), the axis of the feeding pipe (12) is parallel to the axis of the rotary screen (10), and a blowing mechanism is arranged on the fine screen shell (9) and is provided with three blowing paths, namely an axial path in the rotary screen (10), a radial path below the rotary screen (10) and an axial path below the rotary screen (10);
the blowing mechanism comprises a high-pressure blower (13), a first path pipe (14), a second path pipe (15) and a third path pipe (16), wherein an air outlet port of the high-pressure blower (13) is connected with a main air pipe (17), the first path pipe (14) is arranged on the inner top wall of the feeding pipe (12), one end, far away from the rotary screen (10), of the first path pipe (14) penetrates out of the feeding pipe (12) to be connected with the main air pipe (17), the second path pipe (15) is positioned below the rotary screen (10), a plurality of second path pipes (15) are arranged, the axial direction of the second path pipe (15) is perpendicular to the axial direction of the rotary screen (10), a plurality of second path pipes (15) are uniformly arranged along the axial direction of the rotary screen (10), one end, far away from the rotary screen (10), of the second path pipe (15) is connected with the main air pipe (17), the third path pipe (16) is positioned below the rotary screen (10), the axial direction of the third path pipe (16) is parallel to the axial direction of the rotary screen (16), the axial direction of the rotary screen (10) is uniformly distributed along the axial direction of the third path pipe (16), an inorganic blanking space (18) is formed between the discharge end of the rotary screen (10) and the inner wall of the fine screen shell (9), and a discharge window (19) is formed in the side wall, close to the discharge end of the rotary screen (10), of the fine screen shell (9).
2. The high-primary-garbage multi-stage inorganic screening pretreatment system according to claim 1, wherein a bearing seat (20) is fixed at the inner top of the fine screen shell (9), the rotary screen (10) is rotatably arranged on the bearing seat (20) through a bearing, a gear (21) is fixedly sleeved at the middle part of the rotary screen (10), a motor (22) is mounted at the inner top of the fine screen shell (9), a driving gear (23) is arranged on an output shaft of the motor (22), and the driving gear (23) is meshed with the gear (21).
3. The high-primary-garbage multi-stage inorganic matter screening pretreatment system according to claim 2, wherein the iron removing device (4) comprises an iron removing shell (24) and a magnetic roller (25), the magnetic roller (25) is rotatably arranged in the iron removing shell (24), a blanking channel (26) is formed between one side of the magnetic roller (25) and the inner wall of the iron removing shell (24), and a feeding port of the iron removing shell (24) is located right above the blanking channel (26).
4. A high-primary-garbage multi-stage mineral screening pretreatment system according to claim 3, wherein a scraping plate (27) is arranged at the bottom of the magnetic roller (25), a metal blanking channel (28) is formed between one side of the scraping plate (27) away from the blanking channel (26) and the inner wall of the iron removing shell (24), a stepping motor is arranged on the outer wall of the iron removing shell (24), and an output shaft of the stepping motor is in transmission connection with a roller shaft of the magnetic roller (25).
5. The multistage mineral screening pretreatment system for high-primary garbage as claimed in claim 4, wherein said primary crushing device (2) comprises a crushing shell (29) and crushing rollers (30), said crushing shell (29) is rotatably provided with two groups of said crushing rollers (30), said two groups of said crushing rollers (30) are arranged at intervals in the horizontal direction, a feed port and a discharge port of said crushing shell (29) are respectively formed above and below said crushing rollers (30), a plurality of crushing cutterheads (31) are fixedly sleeved on said crushing rollers (30), said plurality of crushing cutterheads (31) are arranged at equal intervals in the axial direction of said crushing rollers (30), the roller shafts of said crushing rollers (30) are penetrated out of said crushing shell (29) and are connected with a transmission gear (32), the transmission gears (32) on said two crushing rollers (30) are meshed, a pulley motor (33) is arranged on the roller shaft of one of said crushing rollers (30), said driving pulley motor (33) is arranged on the outer side of said driving pulley (33), said driving pulley (35) is connected with said driving pulley (33) through said driving belt (35), the structure of the fine crushing device (6) is the same as that of the primary crushing device (2).
6. The multi-stage mineral screening pretreatment system of high-primary garbage as claimed in claim 5, wherein the lifting conveyor (1) comprises a conveying shell (36) which is obliquely arranged and an auger conveying mechanism which is arranged in the conveying shell (36), a heating space is formed between the outer wall and the inner wall of the conveying shell (36), a plurality of electric heating rings are arranged in the heating space, and the electric heating rings are uniformly distributed along the axial direction of the conveying shell (36).
7. A method for screening and pre-treating high-primary-content living garbage multi-level inorganic matters, which is characterized by comprising the following steps of:
s1: fermenting the highland garbage; fermenting the highland garbage in a filling pool for ten days;
s2: drying; lifting and conveying garbage in the fermentation tank by a lifting conveyor, removing water by gravity in the conveying process, drying, and improving the temperature of inorganic matters, so that the inorganic matters are more easily crushed under the temperature difference;
s3: pre-crushing garbage; the dried highland garbage is primarily crushed in a shredding mode, so that inorganic matters and household garbage have larger size difference;
s4: inorganic matter primary screening; conveying the primarily crushed garbage through a conveying belt, wherein the conveying surface of the conveying belt is hollowed out, and inorganic matters with smaller sizes are screened out in the conveying process;
s5: screening out metal garbage; the metal in the garbage is adsorbed and collected by utilizing a rotating magnetic roller with strong magnetism;
s6: fine screening inorganic matters; the inclined drum screen is adopted to transfer garbage, small-volume inorganic matters are screened out, a blowing mechanism is arranged, the transmission of the garbage is quickened, the large-volume inorganic matters are exposed, and therefore the large-volume inorganic matters are screened out, and the small-volume inorganic matters are further screened out;
s7: finely crushing garbage;
s8: waste incineration; and (5) putting the finely crushed garbage into an incinerator for incineration.
8. The method for multistage inorganic screening pretreatment of high-primary garbage according to claim 7, wherein the particle size of the garbage after primary crushing in the step S3 is 10cm-30cm, and the particle size of the garbage after fine crushing in the step S7 is 10-15mm.
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