CN109574716B - Production line for producing fertilizer by utilizing sludge and production process thereof - Google Patents
Production line for producing fertilizer by utilizing sludge and production process thereof Download PDFInfo
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- CN109574716B CN109574716B CN201811644079.6A CN201811644079A CN109574716B CN 109574716 B CN109574716 B CN 109574716B CN 201811644079 A CN201811644079 A CN 201811644079A CN 109574716 B CN109574716 B CN 109574716B
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- conveying device
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- 239000010802 sludge Substances 0.000 title claims abstract description 134
- 239000003337 fertilizer Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 100
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Abstract
The invention discloses a production line for producing fertilizer by utilizing sludge, which comprises sludge treatment equipment (111) and is characterized in that: it also comprises a material conveying device (112), a hot blast stove (113), a sludge drying and granulating device (114). The beneficial effects of the invention are as follows: compact structure, improved fertilizer production efficiency, shortened mud cake forming time, reduced labor intensity, and simple operation.
Description
Technical Field
The invention relates to a production line for producing fertilizer by using sludge and a production process thereof.
Background
The sludge is a byproduct generated in the sewage treatment process, the components of the sludge are extremely complex, and the sludge mainly contains about 80-90% of water, other organic matters, various trace elements, pathogenic microorganisms, parasitic ova, heavy metals and the like which can be recycled and can cause adverse effects on the environment. Harmless and resource treatment of sludge is an important subject for environmental protection worldwide. Traditional sludge treatment methods include sea throwing (or direct discharge), landfill and composting, but all have the disadvantages of negative effects on the environment (water pollution, soil pollution, air pollution and the like) and occupation and waste of space resources (land and water fields) and the like, and have been forbidden or abandoned by more and more industrial countries.
Several sludge treatment methods and apparatuses have been developed successively so that it is desired to reduce the content of harmful substances in sludge and to recycle it secondarily by sludge treatment, i.e., to produce fertilizer for plant cultivation by sludge. The process steps for producing the fertilizer by using the sludge are as follows: adding auxiliary materials and sludge into the existing sludge comprehensive treatment equipment, stirring and mixing the auxiliary materials and the sludge at high temperature through the sludge comprehensive treatment equipment, hydrolyzing, humic, catalyzing and drying the sludge to obtain a mud cake, and granulating the mud cake through a granulator after obtaining the mud cake so as to facilitate later bagging and transportation. This sludge treatment apparatus has the following drawbacks: 1. the auxiliary materials put into the comprehensive treatment equipment are various, the space occupied by the comprehensive treatment equipment is large, so that the sludge and various auxiliary materials can be uniformly mixed only by taking a long time, the heating area between the sludge and the auxiliary materials is small, and the materials can be heated only by consuming a large heat source, so that the defects of low heating efficiency and long mixing time exist, and the forming time of mud cakes is further prolonged. 2. The granulator is complex in structure, and the formed granular materials also need to be subjected to subsequent drying treatment to thoroughly remove the moisture in fertilizer granules, so that the fertilizer production process is increased, and the production efficiency is further reduced. 3. After the mud cake is formed, the mud cake is required to be manually conveyed into a feed inlet of the granulator, and the production is discontinuous, so that the labor intensity of workers is increased, and the production efficiency of the fertilizer is further reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a production line and a production process for producing fertilizer by using sludge, which have compact structure, improve the production efficiency of fertilizer, shorten the forming time of mud cakes, lighten the labor intensity of workers and are simple to operate.
The aim of the invention is achieved by the following technical scheme: the production line for producing fertilizer by using sludge comprises sludge treatment equipment, a material conveying device, a hot blast stove and sludge drying and granulating equipment;
the material conveying device comprises a sludge conveying device, an auxiliary material conveying device and a single screw conveying device A, wherein the single screw conveying device A comprises a barrel A, a single screw rod A and a motor A, a jacket is arranged on the inner wall of the barrel A, a steam inlet communicated with the jacket is arranged on the top of the barrel A, two ends of the single screw rod A are respectively rotatably arranged on sealing covers positioned at two ends of the barrel A, the motor A is fixedly arranged on any sealing cover, an output shaft of the motor A is connected with one end of the single screw rod A through a coupler, two feed inlets are arranged on the top of one end of the barrel A, and a discharge outlet is arranged on the bottom of the other end of the barrel A; the sludge conveying device and the auxiliary material conveying device are both positioned above the single-screw conveying device A, the structures of the sludge conveying device and the auxiliary material conveying device are the same, the sludge conveying device comprises a groove body, a screw conveying rod and a motor B, the top of the groove body is an opening, the bottom and the periphery of the groove body are all closed, the screw conveying rod is arranged in the groove body, the two ends of the screw conveying rod are respectively and rotatably arranged at the two ends of the groove body, one end of the groove body is fixedly provided with the motor B, an output shaft of the motor B is connected with one end of the screw conveying rod through a coupling, a discharge hole is formed in the bottom of the other end of the groove body, and a branch pipe is welded between the discharge hole of the groove body of the sludge conveying device and the discharge hole of the auxiliary material conveying device and the two feed inlets of the barrel A respectively;
the sludge drying and granulating equipment comprises a left frame and a right frame which are supported on the ground, a plurality of supporting carrier rollers, a driving device, a single screw conveying device B, a motor C, a reduction gearbox, an inner cylinder, a middle cylinder and an outer cylinder, wherein the inner cylinder, the middle cylinder and the outer cylinder are arranged between the left frame and the right frame and are sequentially arranged from inside to outside; the left frame is provided with a single screw conveyer B, the single screw conveyer B comprises a cylinder B, a single screw rod B and a motor D, the cylinder B is fixedly arranged on the left frame, two ends of the single screw rod B are respectively and rotatably arranged on sealing covers positioned at two ends of the cylinder B, the motor D is fixedly arranged on any one sealing cover, an output shaft of the motor D is connected with one end of the single screw rod A through a coupling, the top of the cylinder body B is provided with a feed inlet, the bottom of the cylinder body B is provided with a discharge hole which penetrates through the through hole and stretches into the inner cylinder, the feed inlet of the cylinder body B is positioned right below the outlet end of the sludge treatment equipment, the outlet end of the sludge treatment equipment is connected with a butterfly valve, and the inlet end of the sludge treatment equipment is connected with the discharge hole of the cylinder body A through a pipeline; the air outlet of the hot blast stove extends into the opening of the hollow stirring shaft; the outer wall of the inner cylinder is provided with a spiral material lifting tile plate A, the inner wall of the outer cylinder is provided with a spiral material lifting tile plate B, and the spiral direction of the material lifting tile plate A is opposite to that of the material lifting tile plate B.
The bottoms of the cylinder A and the groove body are fixedly provided with brackets supported on the ground, and the cylinder A is parallel to the groove body.
The sludge conveying device and the auxiliary material conveying device are arranged in a front-back symmetrical mode.
The cylinder B is horizontally arranged.
The driving device comprises a motor E, a driving belt pulley is arranged on an output shaft of the motor E, and a belt is arranged between the driving belt pulley and the driven belt pulley.
The right end part of the hollow stirring shaft is fixedly provided with a fixed shaft, and the driven belt pulley is arranged on the fixed shaft.
And a plurality of bucket elevators are arranged beside the sludge conveying device and the auxiliary material conveying device.
The production line is a production process for producing fertilizer by using sludge, and comprises the following steps:
s1, conveying sludge and auxiliary materials, wherein the conveying comprises sludge conveying and auxiliary material conveying;
the steps of the sludge conveying are as follows: a worker turns on a motor B of the sludge conveying device, and the motor B drives a spiral conveying rod to rotate; then, a worker puts the sludge into a hopper of a bucket elevator positioned beside the sludge conveying device, the sludge is conveyed into a tank body of the sludge conveying device through the bucket elevator, and the sludge is conveyed to the right by a spiral conveying rod after entering the tank body, so that the sludge is conveyed;
the auxiliary material conveying step comprises the following steps: a worker turns on a motor B of the auxiliary material conveying device, and the motor B drives the spiral conveying rod to rotate; then, the workers put auxiliary materials into a hopper of a bucket elevator positioned beside the auxiliary material conveying device, the auxiliary materials are conveyed into a groove body of the auxiliary material conveying device through the bucket elevator, and the auxiliary materials are conveyed to the right by a spiral conveying rod after entering the groove body, so that the auxiliary materials are conveyed;
s2, mixing materials: under the action of the spiral conveying rod, the sludge and the auxiliary materials flow out from the discharge port of the tank body, and the materials after flowing out sequentially enter the cylinder body A through the branch pipe and the feed inlet of the cylinder body A; then a worker turns on a motor A, the motor A drives a single screw rod A to rotate, the single screw rod A conveys the sludge and auxiliary materials towards the direction of a discharge port of a cylinder body A, in the conveying process, the single screw rod A pre-mixes the sludge and the auxiliary materials of different types, and meanwhile, high-temperature steam is introduced into a steam inlet, and the mixed materials are preheated after the high-temperature steam enters a jacket;
s3, forming mud cakes: under the action of a single screw rod A, the mixed material is transported rightward along the cylinder A, then flows out from a discharge hole of the cylinder A and enters sludge treatment equipment through a pipeline and an inlet end of the sludge treatment equipment, the sludge treatment equipment heats and stirs the mixed material, and sludge is hydrolyzed, humic, catalyzed and dried to obtain a mud cake;
s4, after the mud cake is formed, a worker opens a butterfly valve, and the mud cake finally enters the cylinder B from the outlet end of the sludge treatment equipment, the butterfly valve and the feed inlet of the cylinder B;
s5, preparing fertilizer, which comprises the following steps:
s51, a worker turns on a motor D, the motor D conveys mud cakes to a discharge hole of a cylinder body B, and the mud cakes leak out and fall into the inner cylinder;
s52, a worker turns on the motor C, torque of the motor C is transmitted to a large gear after being decelerated by a reduction gearbox, the large gear drives a small gear to rotate, the small gear drives an outer cylinder to rotate on a supporting carrier roller around the axis of the small gear, and the outer cylinder drives an inner cylinder to rotate;
s53, a worker opens the hot air furnace, the hot air furnace burns to generate hot air, the hot air enters the inner cavity of the hollow stirring shaft under the air pressure, and the hot air is ejected from the hollow pipe and enters the inner cylinder;
s54, a worker turns on a motor E, the motor E drives a driving belt pulley to rotate, the driving belt pulley drives a driven belt pulley to rotate through a belt, the driven belt pulley drives a fixed shaft to rotate, the fixed shaft drives a hollow stirring shaft to rotate, the hollow stirring shaft conveys mud cakes from left to right, in the conveying process, a hollow pipe lifts the mud cakes upwards to disperse the mud cakes, the granular mud cakes fall from the air, and in the falling process, hot air sprayed from the hollow pipe heats the granular mud cakes, so that a granular fertilizer is formed;
s55, the formed fertilizer falls into the middle cylinder from the gap B under the drive of the hollow stirring shaft, the fertilizer is transported leftwards in the middle cylinder under the action of the material lifting tile plate A, then flows out of the gap A and falls onto the inner wall of the outer cylinder, and under the action of the material lifting tile plate B, the fertilizer flows out of the opening of the outer cylinder and falls onto the ground, so that the preparation of the granular fertilizer is finally realized.
The invention has the following advantages: the invention has compact structure, improves the production efficiency of fertilizer, shortens the forming time of mud cakes, lightens the labor intensity of workers and has simple operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a material conveying apparatus;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic diagram of a sludge drying and granulating apparatus;
FIG. 5 is a front cross-sectional view of FIG. 4;
fig. 6 is a top view of fig. 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings, the scope of the invention not being limited to the following:
as shown in fig. 1 to 6, a production line for producing fertilizer by using sludge comprises a sludge treatment device 111, a material conveying device 112, a hot blast stove 113 and a sludge drying and granulating device 114.
The material conveying device 112 comprises a sludge conveying device 1, an auxiliary material conveying device 2 and a single-screw conveying device A3, wherein the single-screw conveying device A3 comprises a cylinder A4, a single-screw rod A5 and a motor A6, a jacket 7 is arranged on the inner wall of the cylinder A4, a steam inlet 8 communicated with the jacket 7 is arranged on the top of the cylinder A4, two ends of the single-screw rod A5 are respectively and rotatably arranged on sealing covers positioned at two ends of the cylinder A4, the motor A6 is fixedly arranged on any one sealing cover, an output shaft of the motor A6 is connected with one end of the single-screw rod A5 through a coupling, two feeding inlets are arranged on the top of one end of the cylinder A4, and a discharge outlet 9 is arranged on the bottom of the other end of the cylinder A4; the sludge conveying device 1 and the auxiliary material conveying device 2 are located above the single-screw conveying device A3, the sludge conveying device 1 and the auxiliary material conveying device 2 are identical in structure, the sludge conveying device 1 comprises a groove body 10, a screw conveying rod 11 and a motor B12, the top of the groove body 10 is an opening, the bottom and the periphery of the groove body 10 are all closed, the screw conveying rod 11 is arranged in the groove body 10, two ends of the screw conveying rod are respectively and rotatably installed at two ends of the groove body 10, a motor B12 is fixedly installed at one end of the groove body 10, an output shaft of the motor B12 is connected with one end of the screw conveying rod 11 through a coupling, a discharge hole 9 is formed in the bottom of the other end of the groove body 10, and a branch pipe 14 is welded between the discharge hole 9 of the groove body 10 of the sludge conveying device 1 and the auxiliary material conveying device 2 and two feed inlets of the cylinder A4.
The sludge drying and granulating equipment 114 comprises a left frame 15 and a right frame 16 which are supported on the ground, a plurality of supporting carrier rollers 17 which are supported on the ground, a driving device, a single screw conveying device B18, a motor C19, a reduction gearbox 20, an inner cylinder 21, a middle cylinder 22 and an outer cylinder 23 which are arranged between the left frame 15 and the right frame 16 and are sequentially arranged from inside to outside, wherein a large gear 24 and a plurality of trays 25 are fixedly arranged outside the outer cylinder 23, the trays 25 are supported on the supporting carrier rollers 17, an output shaft of the motor C19 is connected with an input shaft of the reduction gearbox 20, a small gear 26 is arranged on an output shaft of the reduction gearbox 20, the small gear 26 is meshed with the large gear 24, an end cover A27 is fixedly arranged at the left end part of the outer cylinder 23, the right end part of the outer cylinder 23 is an opening, the left end surface of the inner cylinder 21 is welded on the end cover A27, the right end part of the inner cylinder 21 is an opening, the end cover A27 is provided with a through hole 28 communicated with the inner cylinder 21, a hollow stirring shaft 29 is rotatably arranged between the right frame 16 and the left bracket 35, the right end part of the hollow stirring shaft 29 is closed and extends out of the right frame 16, the right extending end is provided with a driven pulley 30, the left end part of the hollow stirring shaft 29 is open and extends out of the left frame 15 leftwards through the inner cylinder 21, the hollow stirring shaft 29 is sequentially provided with a plurality of hollow pipes 31 communicated with the hollow stirring shaft 29 along the length direction, the hollow pipes 31 are spirally arranged on the hollow stirring shaft 29 and are arranged in the inner cylinder 21, the left end part of the intermediate cylinder 22 is open, a gap A is formed between the left end surface of the intermediate cylinder 22 and the end cover A27, the right end part of the intermediate cylinder 22 is welded with an end cover B, the end cover B is welded on the hollow stirring shaft 29, and a gap B is formed between the end cover B and the right end surface of the inner cylinder 21; the left frame 15 is provided with a single screw conveying device B18, the single screw conveying device B18 comprises a cylinder B32, a single screw rod B33 and a motor D34, the cylinder B32 is fixedly arranged on the left frame 15, two ends of the single screw rod B33 are respectively and rotatably arranged on sealing covers positioned at two ends of the cylinder B32, the motor D34 is fixedly arranged on any one sealing cover, an output shaft of the motor D34 is connected with one end of the single screw rod A5 through a coupling, the top of the cylinder B32 is provided with a feed inlet, the bottom of the cylinder B32 is provided with a discharge hole 9 which penetrates through a through hole 28 and stretches into the inner cylinder 21, the feed inlet of the cylinder B32 is positioned under the outlet end of the sludge treatment equipment 111, the outlet end of the sludge treatment equipment 111 is connected with a butterfly valve 41, and the inlet end of the sludge treatment equipment 111 is connected with the discharge hole 9 of the cylinder A4 through a pipeline; the air outlet of the hot blast stove 113 extends into the opening of the hollow stirring shaft 29; the outer wall of the inner cylinder 21 is provided with a spiral material lifting tile plate A42, the inner wall of the outer cylinder 23 is provided with a spiral material lifting tile plate B43, and the spiral direction of the material lifting tile plate A42 is opposite to the spiral direction of the material lifting tile plate B43.
The bottoms of the cylinder A4 and the tank body 10 are fixedly provided with a bracket 35 supported on the ground, and the cylinder A4 is parallel to the tank body 10. The sludge conveying device 1 and the auxiliary material conveying device 2 are arranged in a front-back symmetrical mode. The cylinder B32 is horizontally arranged. The driving device comprises a motor E36, a driving belt pulley 37 is arranged on an output shaft of the motor E36, and a belt 38 is arranged between the driving belt pulley 37 and the driven belt pulley 30. The right end of the hollow stirring shaft 29 is fixedly provided with a fixed shaft 39, and the driven pulley 30 is mounted on the fixed shaft 39. A plurality of bucket elevators 40 are provided at the sides of the sludge conveyor 1 and the auxiliary material conveyor 2.
The production line is a production process for producing fertilizer by using sludge, and comprises the following steps:
s1, conveying sludge and auxiliary materials, wherein the conveying comprises sludge conveying and auxiliary material conveying;
the steps of the sludge conveying are as follows: a worker turns on a motor B12 of the sludge conveying device 1, and the motor B12 drives a spiral conveying rod 11 to rotate; then, a worker puts the sludge into a hopper of a bucket elevator 40 positioned beside the sludge conveying device 1, the sludge is conveyed into a tank body 10 of the sludge conveying device 1 through the bucket elevator 40, and the sludge is conveyed to the right by a spiral conveying rod 11 after entering the tank body 10, so that the sludge is conveyed;
the auxiliary material conveying step comprises the following steps: the worker turns on a motor B12 of the auxiliary material conveying device 2, and the motor B12 drives the spiral conveying rod 11 to rotate; then, the workers put auxiliary materials into a hopper of a bucket elevator 40 positioned beside the auxiliary material conveying device 2, the auxiliary materials are conveyed into a tank body 10 of the auxiliary material conveying device 2 through the bucket elevator 40, and after entering the tank body 10, the auxiliary materials are conveyed to the right through a spiral conveying rod 11, so that the auxiliary materials are conveyed;
s2, mixing materials: under the action of the spiral conveying rod 11, the sludge and the auxiliary materials flow out from the discharge port of the tank body 10, and the discharged materials sequentially enter the cylinder body A4 through the branch pipe 14 and the feed port of the cylinder body A4; then a worker turns on a motor A6, the motor A6 drives a single screw rod A5 to rotate, the single screw rod A5 conveys sludge and auxiliary materials towards a discharge hole 9 of a cylinder A4, in the conveying process, the single screw rod A5 pre-mixes the sludge and the auxiliary materials of different types, and meanwhile, high-temperature steam is introduced into a steam inlet 8, and the mixed materials are preheated after the high-temperature steam enters a jacket 7; therefore, the production line realizes preheating and premixing of auxiliary materials, and greatly improves the efficiency of the follow-up forming of mud cakes.
S3, forming mud cakes: under the action of the single screw rod A5, the mixed material is transported rightward along the cylinder A4, then flows out from the discharge hole 9 of the cylinder A4 and enters the sludge treatment equipment 111 through a pipeline and the inlet end of the sludge treatment equipment 111, the sludge treatment equipment 111 heats and stirs the mixed material, and sludge is hydrolyzed, humic, catalyzed and dried to obtain a mud cake;
s4, after the mud cake is formed, a worker opens the butterfly valve 41, and the mud cake finally enters the cylinder B32 from the outlet end of the sludge treatment equipment 111, the butterfly valve 41 and the feed inlet of the cylinder B32;
s5, preparing fertilizer, which comprises the following steps:
s51, a worker turns on a motor D34, the motor D34 conveys mud cakes to a discharge hole 9 of a cylinder body B32, and the mud cakes leak out and fall into an inner cylinder 21;
s52, a worker turns on a motor C19, the torque of the motor C19 is transmitted to a large gear 24 after being decelerated by a reduction gearbox 20, the large gear 24 drives a small gear 26 to rotate, the small gear 26 drives an outer cylinder 23 to rotate on a supporting carrier roller 17 around the axis of the outer cylinder 23, and the outer cylinder 23 drives an inner cylinder 21 to rotate;
s53, a worker opens the hot air furnace 113, the hot air furnace 113 burns to generate hot air, the hot air enters the inner cavity of the hollow stirring shaft 29 under the air pressure, and the hot air is ejected from the hollow pipe 31 and enters the inner cylinder 21;
s54, a worker turns on a motor E36, the motor E36 drives a driving belt pulley 37 to rotate, the driving belt pulley 37 drives a driven belt pulley 30 to rotate through a belt 38, the driven belt pulley 30 drives a fixed shaft 39 to rotate, the fixed shaft 39 drives a hollow stirring shaft 29 to rotate, the hollow stirring shaft 29 conveys mud cakes from left to right, in the conveying process, a hollow pipe 31 lifts up the mud cakes to disperse the mud cakes, the granular mud cakes fall from the air, and in the falling process, high-temperature hot air sprayed from the hollow pipe 31 heats the granular mud cakes, so that a granular fertilizer is formed;
s55, the formed fertilizer falls into the middle cylinder 22 from the gap B under the drive of the hollow stirring shaft 29, the fertilizer is transported leftwards in the middle cylinder 22 under the action of the lifting tile plate A42, then flows out of the gap A and falls onto the inner wall of the outer cylinder 23, and the fertilizer flows out of the opening of the outer cylinder 23 and falls onto the ground under the action of the lifting tile plate B43, so that the preparation of the granular fertilizer is finally realized. The production line directly conveys the formed mud cake to the sludge treatment equipment 111, and then conveys the mud cake to the sludge drying and granulating equipment 114 by the sludge treatment equipment 111, so that manual conveying is not required, the labor intensity of workers is greatly reduced, the production efficiency of fertilizer is improved, in the fertilizer preparation process, the formed granular fertilizer is directly dried by hot air blown out by a hot blast stove, the follow-up independent drying is not required, the continuous preparation of fertilizer is realized, and the production efficiency of fertilizer is further greatly improved.
Claims (7)
1. A production line for producing fertilizer from sludge, comprising sludge treatment equipment (111), characterized in that: the device also comprises a material conveying device (112), a hot blast stove (113), a sludge drying and granulating device (114);
the material conveying device (112) comprises a sludge conveying device (1), an auxiliary material conveying device (2) and a single screw conveying device A (3), wherein the single screw conveying device A (3) comprises a cylinder A (4), a single screw rod A (5) and a motor A (6), a jacket (7) is arranged on the inner wall of the cylinder A (4), a steam inlet (8) communicated with the jacket (7) is arranged on the top of the cylinder A (4), two ends of the single screw rod A (5) are respectively and rotatably arranged on sealing covers positioned at two ends of the cylinder A (4), the motor A (6) is fixedly arranged on any one sealing cover, an output shaft of the motor A (6) is connected with one end of the single screw rod A (5) through a coupling, two feed inlets are formed in the top of one end of the cylinder A (4), and a discharge outlet (9) is formed in the bottom of the other end of the cylinder A (4). The sludge conveying device (1) and the auxiliary material conveying device (2) are both positioned above the single-screw conveying device A (3), the structures of the sludge conveying device (1) and the auxiliary material conveying device (2) are the same, the sludge conveying device (1) comprises a groove body (10), a screw conveying rod (11) and a motor B (12), the top of the groove body (10) is an opening, the bottom and the periphery of the groove body (10) are both closed, the screw conveying rod (11) is arranged in the groove body (10) and the two ends of the screw conveying rod are respectively rotatably arranged at the two ends of the groove body (10), one end of the groove body (10) is fixedly provided with the motor B (12), the output shaft of the motor B (12) is connected with one end of the screw conveying rod (11) through a coupling, the bottom of the other end of the groove body (10) is provided with a discharge hole (9), and a branch pipe (14) is welded between the discharge hole (9) of the groove body (1) of the sludge conveying device (2) and the two feed inlets of the cylinder A (4) respectively;
the sludge drying and granulating equipment (114) comprises a left frame (15) and a right frame (16) which are supported on the ground, a plurality of supporting carrier rollers (17) which are supported on the ground, a driving device, a single screw conveying device B (18), a motor C (19), a reduction gearbox (20), an inner cylinder (21), a middle cylinder (22) and an outer cylinder (23) which are arranged between the left frame (15) and the right frame (16) in sequence from inside to outside, wherein a large gear (24) and a plurality of trays (25) are fixedly arranged outside the outer cylinder (23), the trays (25) are supported on the supporting carrier rollers (17), an output shaft of the motor C (19) is connected with an input shaft of the reduction gearbox (20), a pinion (26) is mounted on an output shaft of the reduction gearbox (20), the pinion (26) is meshed with the large gear (24), an end cover A (27) is fixedly arranged at the left end part of the outer cylinder (23), an opening is arranged at the right end part of the inner cylinder (21), an inner cylinder A (27) is welded at the left end face, an opening is arranged at the right end part of the inner cylinder (21), a hollow end cover (27) is arranged at the right end cover A (27), a hollow end cover (29) is arranged at the left end cover (29) and is arranged between the hollow end cover (16) and the hollow end cover (29) is arranged on the hollow frame, the left end part of the hollow stirring shaft (29) is opened, the left end part penetrates through the inner cylinder (21) leftwards and extends outside the left frame (15), a plurality of hollow pipes (31) communicated with the hollow stirring shaft (29) are sequentially and fixedly arranged on the hollow stirring shaft (29) along the length direction of the hollow stirring shaft, the hollow pipes (31) are spirally arranged on the hollow stirring shaft (29) and are arranged in the inner cylinder (21), the left end part of the middle cylinder (22) is opened, a gap A is formed between the left end surface of the middle cylinder (22) and the end cover A (27), the right end part of the middle cylinder (22) is welded with the end cover B, the end cover B is welded on the hollow stirring shaft (29), and a gap B is formed between the end cover B and the right end surface of the inner cylinder (21); the device is characterized in that a single-screw conveying device B (18) is arranged on the left frame (15), the single-screw conveying device B (18) comprises a cylinder body B (32), a single-screw rod B (33) and a motor D (34), the cylinder body B (32) is fixedly arranged on the left frame (15), two ends of the single-screw rod B (33) are respectively rotatably arranged on sealing covers positioned at two ends of the cylinder body B (32), the motor D (34) is fixedly arranged on any one sealing cover, an output shaft of the motor D (34) is connected with one end of the single-screw rod A (5) through a coupler, a feeding hole is formed in the top of the cylinder body B (32), a discharge hole (9) penetrating through the through hole (28) and extending into the inner cylinder (21) is formed in the bottom of the cylinder body B (32), the feeding hole of the cylinder body B (32) is positioned under an outlet end of a sludge treatment device (111), a butterfly valve (41) is connected at the outlet end of the sludge treatment device (111), and the inlet end of the sludge treatment device (111) is connected with a discharge hole (9) of the cylinder body A (4) through a pipeline; an air outlet of the hot blast stove (113) extends into an opening of the hollow stirring shaft (29); a spiral material lifting tile plate A (42) is distributed on the outer wall of the inner cylinder (21), a spiral material lifting tile plate B (43) is distributed on the inner wall of the outer cylinder (23), and the spiral direction of the material lifting tile plate A (42) is opposite to the spiral direction of the material lifting tile plate B (43);
the production process of the production line for producing the fertilizer by using the sludge comprises the following steps of:
s1, conveying sludge and auxiliary materials, wherein the conveying comprises sludge conveying and auxiliary material conveying;
the steps of the sludge conveying are as follows: a worker turns on a motor B (12) of the sludge conveying device (1), and the motor B (12) drives a spiral conveying rod (11) to rotate; then, a worker puts the sludge into a hopper of a bucket elevator (40) positioned beside the sludge conveying device (1), the sludge is conveyed into a tank body (10) of the sludge conveying device (1) through the bucket elevator (40), and the sludge is conveyed to the right by a spiral conveying rod (11) after entering the tank body (10), so that the sludge is conveyed;
the auxiliary material conveying step comprises the following steps: a worker opens a motor B (12) of the auxiliary material conveying device (2), and the motor B (12) drives a spiral conveying rod (11) to rotate; then, the workers put auxiliary materials into a hopper of a bucket elevator (40) positioned beside the auxiliary material conveying device (2), the auxiliary materials are conveyed into a groove body (10) of the auxiliary material conveying device (2) through the bucket elevator (40), and after entering the groove body (10), the auxiliary materials are conveyed to the right through a spiral conveying rod (11), so that the auxiliary materials are conveyed;
s2, mixing materials: under the action of the spiral conveying rod (11), the sludge and the auxiliary materials flow out from a discharge hole of the tank body (10), and the discharged materials sequentially enter the cylinder body A (4) through the branch pipe (14) and a feed inlet of the cylinder body A (4); then a worker turns on a motor A (6), the motor A (6) drives a single screw rod A (5) to rotate, the single screw rod A (5) conveys sludge and auxiliary materials towards a discharge hole (9) of a cylinder body A (4), in the conveying process, the single screw rod A (5) pre-mixes the sludge and the auxiliary materials of different types, high-temperature steam is simultaneously introduced into a steam inlet (8), and the mixed materials are preheated after the high-temperature steam enters a jacket (7);
s3, forming mud cakes: under the action of a single screw rod A (5), the mixed material is transported rightward along a cylinder A (4), then flows out from a discharge hole (9) of the cylinder A (4) and enters sludge treatment equipment (111) through a pipeline and an inlet end of the sludge treatment equipment (111), the sludge treatment equipment (111) heats and stirs the mixed material, and sludge is hydrolyzed, humic, catalyzed and dried to obtain a mud cake;
s4, after mud cake forming, a worker opens a butterfly valve (41), and mud cake finally enters the cylinder B (32) from the outlet end of the sludge treatment equipment (111), the butterfly valve (41) and the feed inlet of the cylinder B (32);
s5, preparing fertilizer, which comprises the following steps:
s51, a worker turns on a motor D (34), the motor D (34) conveys mud cakes to a discharge hole (9) of a cylinder body B (32), and the mud cakes leak and fall into an inner cylinder (21);
s52, a worker turns on a motor C (19), torque of the motor C (19) is transmitted to a large gear (24) after being decelerated by a reduction gearbox (20), the large gear (24) drives a small gear (26) to rotate, the small gear (26) drives an outer cylinder (23) to rotate on a supporting carrier roller (17) around the axis of the outer cylinder (23), and the outer cylinder (23) drives an inner cylinder (21) to rotate;
s53, a worker opens the hot air furnace (113), the hot air furnace (113) burns to generate hot air, the hot air enters the inner cavity of the hollow stirring shaft (29) under the air pressure, and the hot air is ejected from the hollow pipe (31) and enters the inner cylinder (21);
s54, a worker turns on a motor E (36), the motor E (36) drives a driving belt pulley (37) to rotate, the driving belt pulley (37) drives a driven belt pulley (30) to rotate through a belt (38), the driven belt pulley (30) drives a fixed shaft (39) to rotate, the fixed shaft (39) drives a hollow stirring shaft (29) to rotate, the hollow stirring shaft (29) conveys mud cakes from left to right, in the conveying process, a hollow pipe (31) lifts the mud cakes upwards to disperse the mud cakes, the granular mud cakes fall from the air, and in the falling process, the high-temperature hot air sprayed out of the hollow pipe (31) heats the granular mud cakes, so that a granular fertilizer is formed;
s55, the formed fertilizer falls into the middle cylinder (22) from the gap B under the drive of the hollow stirring shaft (29), is transported leftwards in the middle cylinder (22) under the action of the lifting tile plate A (42), then flows out of the gap A and falls onto the inner wall of the outer cylinder (23), flows out of the opening of the outer cylinder (23) and falls onto the ground under the action of the lifting tile plate B (43), and finally the preparation of the granular fertilizer is realized.
2. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: the bottoms of the cylinder A (4) and the groove body (10) are fixedly provided with a bracket (35) supported on the ground, and the cylinder A (4) is parallel to the groove body (10).
3. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: the sludge conveying device (1) and the auxiliary material conveying device (2) are arranged in a front-back symmetrical mode.
4. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: the cylinder B (32) is horizontally arranged.
5. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: the driving device comprises a motor E (36), a driving belt pulley (37) is arranged on an output shaft of the motor E (36), and a belt (38) is arranged between the driving belt pulley (37) and the driven belt pulley (30).
6. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: the right end part of the hollow stirring shaft (29) is fixedly provided with a fixed shaft (39), and the driven belt pulley (30) is arranged on the fixed shaft (39).
7. A production line for producing fertilizer by using sludge as claimed in claim 1, wherein: a plurality of bucket elevators (40) are arranged beside the sludge conveying device (1) and the auxiliary material conveying device (2).
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