Kitchen garbage treatment system

Abstract

The utility model provides a kitchen waste treatment system, which belongs to the technical field of kitchen waste treatment, and comprises a shredding system, a screening system, a pulping system, an organic matter recovery system and a light matter recovery system, the shredding system is connected with the screening system, the screening system is respectively connected with the pulping system and the light matter recovery system, and the organic matter recovery system is connected with the organic matter recovery system. The pulping system is respectively connected with the organic matter recovery system and the light matter recovery system; the shredding system comprises a shredding machine; the screening system comprises a screening machine and a screen underflow conveying device; the pulping system comprises a pulping machine, a first screw conveyor, a second screw conveyor and a material tank; the organic matter recovery system comprises a dehydrator, a liquid phase tank and an anaerobic tank; the light substance recovery system comprises an oversize product conveying device and a light substance recovery device. The kitchen garbage treatment system is simple in structure, high in stability and capable of effectively meeting the requirement for separation and recycling of kitchen garbage mixed with a large amount of household garbage such as plastic bags, and the recycling rate of the kitchen garbage is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen waste treatment, in particular to a kitchen waste treatment system. Background Art

[0002] Kitchen waste refers to perishable waste such as vegetable stems and leaves, melon and fruit peels and cores, leftovers, discarded food, etc. In the production practice of kitchen waste treatment for more than ten years, after continuous exploration, a kitchen waste treatment method and process system have been developed, which can effectively solve the problem of currently classified kitchen waste treatment and kitchen waste recycling, and provide a better pre-treatment solution for kitchen waste recycling and resource reuse.

[0003] However, the current kitchen waste pretreatment system is generally used to treat kitchen waste that has been sorted from domestic waste, but in practice, few can truly classify kitchen waste, and it is difficult for the existing kitchen waste pretreatment system to effectively treat kitchen waste that is not properly classified. When the existing kitchen waste pretreatment system treats kitchen waste that is not properly classified, the material will block the system at any time, the kitchen waste resource recycling rate is low, the material recycling rate is low, the recycled organic matter is easy to cause environmental problems, the practicality is poor, the manual cleaning workload is large, and it faces high energy consumption, high operating costs and other problems. Therefore, a kitchen waste treatment system is needed. Summary of the invention

[0004] The purpose of the utility model is to provide a kitchen waste treatment system to solve the technical problem of low recycling rate of existing kitchen waste. The utility model mainly solves the problem of recycling and reusing kitchen waste that is currently mixed with domestic waste and not properly classified, effectively solves the problem of poor economic efficiency and recycling difficulty of kitchen waste, makes kitchen waste recycling more economical, effectively solves the technical problems existing in the resource recycling process, and improves the recycling rate of kitchen waste.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A kitchen waste treatment system comprises a shredding system, a screening system, a pulping system, an organic matter recovery system and a light matter recovery system, wherein the shredding system is connected to the screening system, the screening system is respectively connected to the pulping system and the light matter recovery system, and the pulping system is respectively connected to the organic matter recovery system and the light matter recovery system;

[0007] The shredding system includes a shredder, and a discharge hopper is provided on the shredder;

[0008] The screening system includes a screening machine and a screen under material conveying device, the screening machine is connected to the shredder, and the screen under material conveying device is arranged below the screening machine;

[0009] The pulping system includes a pulping machine, a first screw machine, a second screw machine and a material tank. The pulping machine is arranged below the underscreen conveying device. The pulping machine is connected to the first screw machine and the second screw machine respectively. The second screw machine is connected to the material tank.

[0010] The organic matter recovery system includes a dehydrator, a liquid phase tank and an anaerobic tank. The dehydrator is connected to the material tank and the liquid phase tank respectively, and the anaerobic tank is connected to the liquid phase tank.

[0011] The light matter recovery system comprises an overscreen conveying device and a light matter recovery device. The overscreen conveying device is connected to the screening machine and the light matter recovery device respectively, and the light matter recovery device is connected to the first screw machine.

[0012] Furthermore, the feed port of the shredder is connected to the discharge port of the discharge hopper, a drainage pipe is arranged on one side of the discharge hopper, and the shredder comprises a frame, a knife box assembly and a shock absorbing device, the knife box assembly and the shock absorbing device are respectively arranged on the frame, and the shock absorbing device is arranged around the knife box assembly.

[0013] Furthermore, the knife box assembly includes a shredding chamber, four roller cutters and a motor, the four roller cutters are arranged inside the shredding chamber, the motor is arranged outside the shredding chamber, the output end of the motor is connected to the roller cutters, and a reduction motor is arranged between the motor and the roller cutters.

[0014] Furthermore, the feed port of the screening machine is arranged below the discharge port of the shredder, and the feed port of the screening machine is connected to the discharge port of the shredder through a pipe. The pipe is arranged at an angle, and an anti-blocking device is arranged in the pipe. A first material buffer bucket is arranged between the screening machine and the undersize material conveying device. The feed port of the first material buffer bucket is connected to the discharge port at the lower end of the screening machine, and the discharge port of the first material buffer bucket is arranged above the loading port of the undersize material conveying device.

[0015] Furthermore, a primary screen and a secondary screen are respectively arranged inside the screening machine, a first discharge port and a second discharge port are respectively arranged at one end of the primary screen, the second discharge port is connected to the feed port of the secondary screen, a secondary organic matter discharge port and a secondary light matter discharge port are respectively arranged at one end of the secondary screen, the secondary organic matter discharge port is connected to the feed port of the first material buffer bucket, the secondary light matter discharge port is connected to the loading port of the screen material conveying device, a plurality of compressed air outlets are respectively arranged on the primary screen and the secondary screen, and a plurality of sieve holes are arranged on the secondary screen.

[0016] Furthermore, a magnetic separation device is provided on the undersize material conveying device, and the discharge port of the magnetic separation device is connected to a metal collecting bucket. A second buffer bucket is provided between the undersize material conveying device and the pulping machine, and the second buffer bucket is provided below the discharge port of the undersize material conveying device, and the discharge port of the second buffer bucket is provided above the pulping machine, and the discharge port of the second buffer bucket is connected to the feed port of the pulping machine.

[0017] Furthermore, the light matter discharge port of the pulping machine is connected to the feed port of the first screw machine, the discharge port of the first screw machine is connected to the feed port of the light matter recovery device, the organic matter discharge port of the pulping machine is connected to the feed port of the second screw machine, a third buffer hopper is provided below the discharge port of the second screw machine, a feed hopper is provided below the discharge port of the third buffer hopper, the feed hopper is connected to the material tank through the first delivery pump, and the material tank is connected to the dewatering machine through the second delivery pump.

[0018] Furthermore, the pulping machine includes a rotating shaft, a mesh cage and a pulping motor. The rotating shaft is arranged inside the mesh cage, the output end of the pulping motor is connected to one end of the rotating shaft, wind plates are respectively arranged at both ends of the rotating shaft, a plurality of bulk plates are arranged on the inner side of the wind plates, and a plurality of hammers are arranged on the rotating shaft.

[0019] Furthermore, the slag outlet of the dehydrator is connected to a slag storage device, the liquid outlet of the dehydrator is connected to the liquid inlet of the liquid phase tank, and the liquid outlet of the liquid phase tank is connected to the liquid inlet of the anaerobic tank through a buffer tank discharge pump.

[0020] Furthermore, the loading port of the overscreen material conveying device is arranged below the screening machine, the loading port of the overscreen material conveying device is connected to the light material discharge port of the screening machine, a deodorizing pipe is arranged between the overscreen material conveying device and the screening machine, and the unloading port of the overscreen material conveying device is connected to the feeding port of the light material recovery device.

[0021] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. The shredding system of the utility model is provided with a shredder, so that after the kitchen waste mixed with domestic waste enters the shredding chamber, the four roller cutters in the shredding chamber can shred the kitchen waste mixed with domestic waste; the screening machine of the screening system is provided with a primary screen and a secondary screen inside, the primary screen can float light matter on the upper layer of heavy matter, and at the same time make the light matter enter the secondary screen, the secondary screen screens the kitchen waste organic matter and the kitchen waste light matter, which can effectively meet the separation and recycling of kitchen waste mixed with a large amount of domestic waste such as plastic bags, and has a good screening effect.

[0023] 2. The pulping machine of the pulping system of the utility model pulps the kitchen waste organic matter and screens out small light substances. The pulped kitchen waste organic matter is sent to the material tank through a conveying pump for biochemical reaction, and then sent to the dehydrator through a conveying pump for dehydration. The liquid phase containing a large amount of organic matter enters the anaerobic tank for anaerobic biogas production. The generated biogas can be used to generate electricity for self-use through the biogas comprehensive utilization system, and can also be used in boilers to produce steam for production, so as to reduce garbage disposal costs.

[0024] 3. The kitchen waste treatment system of the utility model has a simple structure, high stability, good sealing, and convenient inspection and maintenance. The back-end system is composed of a set of streamlined equipment, which improves the stability of the entire process and can effectively meet the separation and recycling of kitchen waste mixed with a large amount of plastic bags and other domestic waste, thereby improving the recycling rate of kitchen waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural block diagram of the kitchen waste treatment system of the utility model;

[0026] Figure 2 It is a schematic diagram of the utility model screening system connected with the shredding system and the light material recovery system respectively;

[0027] Figure 3 It is a structural schematic diagram of the utility model shredder;

[0028] Figure 4 It is a schematic diagram of the primary screen of the utility model;

[0029] Figure 5 It is a schematic diagram of the two-stage screen of the utility model;

[0030] Figure 6 It is a schematic diagram of the pulping system of the utility model;

[0031] Figure 7 It is a structural schematic diagram of the utility model pulping machine;

[0032] Figure 8 It is a schematic diagram of the expansion of the mesh cage of the pulping machine of the utility model;

[0033] Fig. 9 It is a schematic diagram of the organic matter recovery system of the utility model.

[0034] In the attached drawings, 1-shredder, 101-frame, 102-knife box assembly, 103-shredder, 104-shredding chamber, 105-four roller cutters, 106-motor, 107-reduction motor, 2-discharging hopper, 21-drain pipe, 3-screening machine, 31-pipeline, 32-anti-blocking device, 33-first material buffer hopper, 34-first screen, 341-first discharge port, 342-second discharge port, 35-secondary screen, 351-secondary organic discharge port, 352-secondary light material discharge port, 353-sieve hole, 4-screen under Conveying device, 42-magnetic separation device, 5-pulping machine, 51-rotating shaft, 52-mesh cage, 53-pulping motor, 54-wind plate, 55-bulk plate, 56-hammer, 6-first screw machine, 7-second screw machine, 71-third buffer bucket, 72-feed hopper, 73-first conveying pump, 74-second conveying pump, 8-material tank, 9-dehydrator, 10-liquid phase tank, 11-anaerobic tank, 12-screen conveying device, 13-light material recovery device, 14-deodorization pipe, 15-slag storage device, 16-buffer tank discharge pump. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0036] like Figure 1-9As shown, a kitchen waste treatment system includes a shredding system, a screening system, a pulping system, an organic matter recovery system and a light matter recovery system. The shredding system is connected to the screening system. The shredding system is used to shred kitchen waste mixed with domestic waste. The screening system is used to screen the shredded kitchen waste. The screening system is respectively connected to the pulping system and the light matter recovery system. The pulping system is used to pulp the screened kitchen waste organic matter and screen out smaller light matter. The pulping system is respectively connected to the organic matter recovery system and the light matter recovery system. The organic matter recovery system is used to recover the pulped kitchen waste organic matter. The light matter recovery system is used to The light materials screened out by the screening system and the pulping system are recovered; the shredding system includes a shredder 1, which is used to shred kitchen waste. The shredder 1 is provided with a discharge hopper 2. Kitchen waste mixed with domestic waste enters the shredder 1 from the discharge hopper 2, and the shredder 1 shreds the kitchen waste; the screening system includes a screening machine 3 and a screen under material conveying device 4. The screening machine 3 is connected to the shredder 1. The screen under material conveying device 4 is arranged below the screening machine 3. The kitchen waste organic matter coming out of the screening machine 3 is conveyed out through the screen under material conveying device 4; the pulping system includes a pulping machine 5, a first screw machine 6, a second screw machine 7 and a material tank 8. The pulping machine 5 is provided with Below the undersize conveying device 4, the kitchen waste organic matter is conveyed to the pulping machine 5 through the undersize conveying device 4, the pulping machine 5 is connected to the first screw machine 6 and the second screw machine 7 respectively, the second screw machine 7 is connected to the material tank 8, the pulping machine 5 screens out smaller light substances, which are conveyed to the light substance recovery system for recovery by the first screw machine 6, and the pulped kitchen waste organic matter is conveyed to the material tank 8 through the second screw machine 7, and a biochemical reaction is carried out in the material tank 8; the organic matter recovery system includes a dehydrator 9, a liquid phase tank 10 and an anaerobic tank 11, the dehydrator 9 is connected to the material tank 8 and the liquid phase tank 10 respectively, the anaerobic tank 11 is connected to the liquid phase tank 10, and contains A large amount of liquid phase of organic matter enters the anaerobic tank 11 for anaerobic biogas production. The generated biogas can be used to generate electricity for self-use through the biogas comprehensive utilization system, and can also be used to produce steam in the boiler for production, so as to reduce the cost of garbage disposal; the light material recovery system includes an oversize conveying device 12 and a light material recovery device 13, the oversize conveying device 12 is connected to the screening machine 3 and the light material recovery device 13 respectively, the light material coming out of the screening machine 3 is transported to the light material recovery device 13 through the oversize conveying device 12 for recycling, and the collected plastics can be sent to a waste plastic recycling plant for recycling, and the light material recovery device 13 is connected to the first screw machine 6.

[0037] like Figure 2-3As shown, the feed port of the shredder 1 is connected to the discharge port of the discharge hopper 2, and the kitchen waste mixed with domestic waste enters the shredder 1 from the discharge hopper 2, and the shredder 1 shreds the kitchen waste. A drain pipe 21 is provided on one side of the discharge hopper 2, and the drain pipe 21 is used to discharge moisture in the kitchen waste. The shredder 1 includes a frame 101, a knife box assembly 102 and a shock absorbing device 103, the knife box assembly 102 and the shock absorbing device 103 are respectively arranged on the frame 101, and the shock absorbing device 103 is arranged around the knife box assembly 102, and the shock absorbing device is a prior art. The knife box assembly 102 includes a shredding chamber 104, four roller cutters 105 and a motor 106. The four roller cutters 105 are arranged inside the shredding chamber 104. After the kitchen waste is pulled into the shredding chamber 104, the four roller cutters in the shredding chamber can shred the kitchen waste mixed with domestic waste; the motor 106 is arranged on the outside of the shredding chamber 104, the output end of the motor 106 is connected to the roller cutter 105, and a reduction motor 107 is arranged between the motor 106 and the roller cutter 105.

[0038] like Figure 2 As shown, the feed port of the screening machine 3 is arranged below the discharge port of the shredder 1, and the feed port of the screening machine 3 is connected to the discharge port of the shredder 1 through a pipe 31. The pipe 31 is arranged obliquely, and the interior of the pipe 31 is arranged as a smooth structure, which can reduce the friction of the shredded kitchen waste and quickly enter the screening machine 3. An anti-blocking device 32 is arranged in the pipe 31 to prevent the shredded kitchen waste from being blocked. A first material buffer bucket 33 is arranged between the screening machine 3 and the undersize conveying device 4. The feed port of the first material buffer bucket 33 is connected to the discharge port at the lower end of the screening machine, and the discharge port of the first material buffer bucket 33 is arranged above the upper feed port of the undersize conveying device 4. The kitchen waste organic matter screened by the screening machine 3 enters the first material buffer bucket 33, and then enters the undersize conveying device 4 from the first material buffer bucket 33. The undersize material conveying device is a conveyor belt in the prior art. A magnetic separation device 42 is arranged on the undersize material conveying device 4. The magnetic separation device is of prior art. The discharge port of the magnetic separation device 42 is connected to a metal collecting bucket 43. The magnetic separation device 42 screens metals and other substances into the metal collecting bucket 43. A second buffer bucket 41 is arranged between the undersize material conveying device 4 and the pulping machine 5. The kitchen waste organic matter coming down from the undersize material conveying device 4 enters the second buffer bucket 41. The second buffer bucket 41 is arranged below the discharge port of the undersize material conveying device 4. The discharge port of the second buffer bucket 41 is arranged above the pulping machine 5, and the discharge port of the second buffer bucket 41 is connected to the feed port of the pulping machine 5. The kitchen waste organic matter coming out of the second buffer bucket 41 enters the pulping machine 5.

[0039] In an embodiment of the utility model, a loading port of an oversize conveying device 12 is arranged below the screening machine 3. The oversize conveying device 12 is a conveyor belt in the prior art. The loading port of the oversize conveying device 12 is connected to a light material discharge port of the screening machine 3. The light material screened out from the screening machine 3 enters the oversize conveying device 12. A deodorizing pipe 14 is arranged between the oversize conveying device 12 and the screening machine 3 for deodorizing the light material. The unloading port of the oversize conveying device 12 is connected to a feeding port of a light material recovery device 13. The light material is transported from the oversize conveying device 12 to the light material recovery device 13. The collected plastics can be sent to a waste plastic recycling plant for recycling.

[0040] like Figure 4-5 As shown, the interior of the screening machine 3 is respectively provided with a primary screen 34 and a secondary screen 35, one end of the primary screen 34 is respectively provided with a first discharge port 341 and a second discharge port 342, the second discharge port 342 is arranged above the first discharge port 341, and a plurality of compressed air outlets 36 are arranged on the primary screen 34, the primary screen 34 is a meshless mechanical vibration + 0.6MPa compressed air screen, the ironware and other materials with higher density screened by the screening machine 3 go out from the first discharge port 341, the second discharge port 342 is connected to the feed port of the secondary screen 35, and the materials with lower density screened by the screening machine 3 enter the secondary screen 35 from the second discharge port 342, the primary screen 34 utilizes the dead weight of the garbage and the conveying angle to achieve the purpose of simple and reliable separation, while reducing the equipment failure rate, and effectively preventing equipment blockage; one end of the secondary screen 35 is respectively provided with a secondary organic matter discharge port 351 and a secondary light matter discharge port 352, the secondary light matter discharge port 352 is arranged above the secondary organic matter discharge port 351, and the secondary The light matter discharge port 352 is provided with a plurality of compressed air outlets 36, the secondary organic matter discharge port 351 is connected to the feed port of the first material buffer 33, the kitchen waste organic matter coming out of the secondary screen 35 enters the first material buffer 31 from the secondary organic matter discharge port 351, the secondary light matter discharge port 352 is connected to the feeding port of the screen-surface conveying device 12, the kitchen waste light matter coming out of the secondary screen 35 goes from the secondary light matter discharge port 352 to the screen-surface conveying device 12, and the secondary screen A plurality of sieve holes 353 are arranged on 35, and the secondary sieve 35 is a mesh vibrating compressed air auxiliary sieve. The secondary sieve 35 utilizes the different density of garbage to make light materials float on the upper layer of heavy materials through the vibrating screen, and at the same time blows out plastics and waste paper with lower density through the compressed air outlet 36 for secondary screening, so as to thoroughly screen the organic matter from the light paper shells and plastic bags in the kitchen waste. The screened organic materials enter the pulping machine 5 through the underscreen conveying device 4 with the magnetic separation device 42 and the buffer system.

[0041] like Figure 6As shown, the light matter discharge port of the pulping machine 5 is connected to the feed port of the first screw machine 6, and the discharge port of the first screw machine 6 is connected to the feed port of the light matter recovery device 13. The first screw machine is a prior art. The pulping machine 5 screens out smaller light matters, which are transported to the light matter recovery system by the first screw machine 6 for recycling. The collected plastics can be sent to a waste plastic recycling plant for recycling; the organic matter discharge port of the pulping machine 5 is connected to the feed port of the second screw machine 7. The second screw machine is a prior art. A third buffer bucket 71 is provided below the discharge port of the second screw machine 7. The pulped kitchen waste organic matter is transported to the third buffer bucket 71 through the second screw machine 7. A feed hopper 72 is provided below the discharge port of the third buffer bucket 71. The kitchen waste organic matter coming out of the third buffer bucket 71 enters the feed hopper 72, and the feed hopper 72 is transported to the material tank 8 through the first delivery pump 73. The kitchen waste organic matter undergoes a biochemical reaction in the material tank 8, and the material tank 8 is connected to the dehydrator 9 through the second delivery pump 74. After pulping, the kitchen waste organic matter is treated with medicine (the medicine is 0.1kg / m 3 , wheat bran 0.5kg / m 3 , zinc sulfate 0.01%, appropriate amount of cellulase, and other ingredients. This operation can increase the utilization rate of original organic matter by about 25%), and the added material is sent to the material tank 8 through the first delivery pump 73. After about 36 hours of biochemical reaction in the material tank 8, it is sent to the dehydrator 9 through the second delivery pump 74 for dehydration.

[0042] like Figure 7-8 As shown, the pulping machine 5 includes a rotating shaft 51, a mesh cage 52 and a pulping motor 53. The rotating shaft 51 is arranged inside the mesh cage 52. The output end of the pulping motor 53 is connected to one end of the rotating shaft 51. The pulping motor 53 is started to drive the rotating shaft 51 to rotate. Wind plates 54 are respectively arranged at both ends of the rotating shaft 51. A plurality of bulk plates 55 are arranged on the inner side of the wind plates 54. A plurality of hammers 56 are arranged on the rotating shaft 51. The kitchen waste organic matter is hammered and pulped by the hammers 56. The hammered kitchen waste organic matter comes out from the mesh of the mesh cage 52, enters the second screw machine 7 through the organic matter discharge port of the pulping machine 5, and is transported to the third buffer bucket 71 by the second screw machine 7. The light matter that cannot be hammered by the hammer 56 enters the first screw machine 6 from the light matter discharge port of the pulping machine 5, and is transported to the light matter recovery device 13 of the light matter recovery system by the first screw machine 6. The collected plastics can be sent to a waste plastic recycling plant for recycling.

[0043] like Fig. 9As shown, the slag outlet of the dehydrator 9 is connected to a slag storage device 15, the liquid outlet of the dehydrator 9 is connected to the liquid inlet of the liquid phase tank 10, and the liquid outlet of the liquid phase tank 10 is connected to the liquid inlet of the anaerobic tank 11 through the buffer tank discharge pump 16. The dehydrated slag enters the slag storage device 15, and after deodorization, it is sent to the composting plant to make organic fertilizer, which can be used for flower cultivation; the liquid phase containing a large amount of organic matter enters the anaerobic tank 11 through the buffer tank discharge pump 16 for anaerobic biogas production, and the generated biogas can be used for power generation for self-use through the biogas comprehensive utilization system, and can also be used for boiler steam production for production, so as to reduce the cost of garbage disposal. The liquid outlet of the liquid phase tank 10 is also provided with a spare buffer tank discharge pump, which is connected to the liquid inlet of the anaerobic tank 11. When the buffer tank discharge pump 16 fails and cannot be used normally, the spare buffer tank discharge pump is turned on to transport the liquid phase containing a large amount of organic matter to the anaerobic tank 11 for anaerobic biogas production.

[0044] In an embodiment of the present invention, a standby pulping system can be provided, and the standby pulping system includes a standby pulping machine, a first standby rotary machine, a second standby screw machine and a standby material tank. The standby pulping machine is provided below the undersize conveying device 4, and the kitchen waste organic matter is conveyed to the standby pulping machine through the undersize conveying device 4. The standby pulping machine is connected to the first standby rotary machine and the second standby screw machine, respectively, and the second standby screw machine is connected to the standby material tank. The standby pulping machine screens out smaller light materials, which are conveyed to the light material recovery system by the first standby rotary machine for recovery. The pulped kitchen waste organic matter is conveyed to the standby buffer bucket through the second standby screw machine. After the pulped kitchen waste organic matter enters the feed hopper through the standby buffer bucket, it is medicated (the medicament is urea 0.1kg / m 3 , wheat bran 0.5kg / m 3 , zinc sulfate 0.01%, cellulase appropriate amount, other ingredients, this operation can increase the utilization rate of original organic matter by about 25%), the added material is sent to the standby material tank through the first standby delivery pump, after about 36h of biochemical reaction in the standby material tank, the standby material tank is connected to the dehydrator 9, and then sent to the dehydrator 9 for dehydration through the second standby delivery pump. When the equipment in the pulping system fails and needs to be repaired, the standby pulping system can be used to enable the kitchen waste treatment system to be used normally.

[0045] The kitchen waste treatment system of the utility model has a simple structure, high stability, good sealing, and convenient inspection and maintenance. The back-end system is composed of a set of equipment that has been streamlined and combined, which improves the stability of the entire process and can effectively meet the separation and recycling of kitchen waste mixed with a large amount of plastic bags and other domestic waste, thereby improving the recycling rate of kitchen waste. The kitchen waste treatment system of the utility model is more stable and reliable than the existing kitchen waste treatment system. At the same time, it solves the leakage problem of the original equipment, reduces the power consumption of garbage recycling by nearly 10% compared with the original system, and increases the garbage recycling rate by about 30% compared with the original system. The overall economic efficiency is greatly improved compared with the original kitchen waste system.

[0046] How it works

[0047] The kitchen waste transport vehicle unloads the kitchen waste mixed with domestic waste into the unloading hopper 2, and the kitchen waste in the unloading hopper 2 enters the shredder 1 for shredding. The shredded kitchen waste materials enter the primary screen 34 and the secondary screen 35 in the screening machine 3 for screening respectively, and the screened kitchen waste light matter enters the screened material conveying device 12, and the screened material conveying device 12 conveys the kitchen waste light matter to the light matter recovery device 13 for recycling; the screened kitchen waste organic matter enters the first material buffer 33, and then comes out of the first material buffer 33 and enters the screened material conveying device 13. The kitchen waste organic matter is transported to the second buffer 41 by the underscreen conveying device 4, and the kitchen waste organic matter in the second buffer 41 enters the pulping machine 5; the pulping machine 5 pulps the kitchen waste organic matter and screens out smaller light substances, and the smaller light substances are transported to the light substance recovery system by the first screw conveyor 6 for recycling; the pulped kitchen waste organic matter is transported to the third buffer 71 by the second screw conveyor 7, and the kitchen waste organic matter coming out of the third buffer 71 enters the feeding hopper 72, and is mixed by adding medicine in the feeding hopper 72 (the medicine is urea 0.1kg / m 3 , wheat bran 0.5kg / m 3 , zinc sulfate 0.01%, appropriate amount of cellulase, and other ingredients), the medicated material is sent to the material tank 8 through the first delivery pump 73, and after about 36 hours of biochemical reaction in the material tank 8, it is sent to the dehydrator 9 for dehydration through the second delivery pump 74; the slag after dehydration by the dehydrator 9 enters the slag storage device 15, and after deodorization treatment, it is sent to the composting plant to make organic fertilizer, which can be used for flower cultivation; the liquid phase containing a large amount of organic matter enters the anaerobic tank 11 through the buffer tank discharge pump 16 for anaerobic biogas production, and the generated biogas can be used to generate electricity for self-use through the biogas comprehensive utilization system, and can also be used in the boiler to produce steam for production, so as to reduce the cost of garbage disposal.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A kitchen waste treatment system, characterized in that: It includes a shredding system, a screening system, a pulping system, an organic matter recovery system and a light matter recovery system. The shredding system is connected to the screening system, the screening system is connected to the pulping system and the light matter recovery system respectively, and the pulping system is connected to the organic matter recovery system and the light matter recovery system respectively; The shredding system comprises a shredder (1), and a discharge hopper (2) is arranged on the shredder (1); The screening system comprises a screening machine (3) and a screened material conveying device (4), wherein the screening machine (3) is connected to the shredder (1), and the screened material conveying device (4) is arranged below the screening machine (3); The pulping system comprises a pulping machine (5), a first screw machine (6), a second screw machine (7) and a material tank (8); the pulping machine (5) is arranged below the underscreen material conveying device (4); the pulping machine (5) is connected to the first screw machine (6) and the second screw machine (7) respectively; and the second screw machine (7) is connected to the material tank (8); The organic matter recovery system comprises a dehydrator (9), a liquid phase tank (10) and an anaerobic tank (11), wherein the dehydrator (9) is connected to the material tank (8) and the liquid phase tank (10) respectively, and the anaerobic tank (11) is connected to the liquid phase tank (10); The light matter recovery system comprises an overscreen conveying device (12) and a light matter recovery device (13), wherein the overscreen conveying device (12) is connected to a screening machine (3) and the light matter recovery device (13) respectively, and the light matter recovery device (13) is connected to a first screw machine (6).

2. A kitchen waste treatment system according to claim 1, characterized in that: The feed inlet of the shredder (1) is connected to the discharge outlet of the discharge hopper (2); a drainage pipe (21) is arranged on one side of the discharge hopper (2); the shredder (1) comprises a frame (101), a knife box assembly (102) and a shock absorbing device (103); the knife box assembly (102) and the shock absorbing device (103) are respectively arranged on the frame (101), and the shock absorbing device (103) is arranged around the knife box assembly (102).

3. A kitchen waste treatment system according to claim 2, characterized in that: The knife box assembly (102) comprises a shredding chamber (104), four roller cutters (105) and a motor (106), wherein the four roller cutters (105) are arranged inside the shredding chamber (104), the motor (106) is arranged outside the shredding chamber (104), the output end of the motor (106) is connected to the roller cutters (105), and a reduction motor (107) is arranged between the motor (106) and the roller cutters (105).

4. A kitchen waste treatment system according to claim 1, characterized in that: The feed inlet of the screening machine (3) is arranged below the discharge outlet of the shredder (1), and the feed inlet of the screening machine (3) is connected to the discharge outlet of the shredder (1) via a pipe (31), the pipe (31) is arranged obliquely, and an anti-blocking device (32) is arranged in the pipe (31), a first material buffer bucket (33) is arranged between the screening machine (3) and the undersize material conveying device (4), the feed inlet of the first material buffer bucket (33) is connected to the discharge outlet at the lower end of the screening machine (3), and the discharge outlet of the first material buffer bucket (33) is arranged above the feed inlet of the undersize material conveying device (4).

5. The kitchen waste treatment system according to claim 1, characterized in that: A primary screen (34) and a secondary screen (35) are respectively arranged inside the screening machine (3); a first discharge port (341) and a second discharge port (342) are respectively arranged at one end of the primary screen (34); the second discharge port (342) is connected to a feed port of the secondary screen (35); a secondary organic matter discharge port (351) and a secondary light matter discharge port (352) are respectively arranged at one end of the secondary screen (35); the secondary organic matter discharge port (351) is connected to a feed port of a first material buffer hopper (33); the secondary light matter discharge port (352) is connected to a feed port of an overscreen material conveying device (12); a plurality of compressed air outlets (36) are respectively arranged on the primary screen (34) and the secondary screen (35); and a plurality of sieve holes (353) are arranged on the secondary screen (35).

6. A kitchen waste treatment system according to claim 1, characterized in that: The undersize material conveying device (4) is provided with a magnetic separation device (42), the discharge port of the magnetic separation device (42) is connected to a metal collecting bucket (43), a second buffer bucket (41) is provided between the undersize material conveying device (4) and the pulping machine (5), the second buffer bucket (41) is provided below the discharge port of the undersize material conveying device (4), the discharge port of the second buffer bucket (41) is provided above the pulping machine (5), and the discharge port of the second buffer bucket (41) is connected to the feed port of the pulping machine (5).

7. The kitchen waste treatment system according to claim 1, characterized in that: The light matter discharge port of the pulping machine (5) is connected to the feed port of the first screw machine (6), the discharge port of the first screw machine (6) is connected to the feed port of the light matter recovery device (13), the organic matter discharge port of the pulping machine (5) is connected to the feed port of the second screw machine (7), a third buffer hopper (71) is arranged below the discharge port of the second screw machine (7), a feed hopper (72) is arranged below the discharge port of the third buffer hopper (71), the feed hopper (72) is connected to the material tank (8) through the first delivery pump (73), and the material tank (8) is connected to the dewatering machine (9) through the second delivery pump (74).

8. The kitchen waste treatment system according to claim 1, characterized in that: The pulping machine (5) comprises a rotating shaft (51), a mesh cage (52) and a pulping motor (53). The rotating shaft (51) is arranged inside the mesh cage (52). The output end of the pulping motor (53) is connected to one end of the rotating shaft (51). Wind plates (54) are respectively arranged at both ends of the rotating shaft (51). A plurality of bulk material plates (55) are arranged inside the wind plates (54). A plurality of hammer pieces (56) are arranged on the rotating shaft (51).

9. The kitchen waste treatment system according to claim 1, characterized in that: The slag outlet of the dehydrator (9) is connected to a slag storage device (15), the liquid outlet of the dehydrator (9) is connected to the liquid inlet of the liquid phase tank (10), and the liquid outlet of the liquid phase tank (10) is connected to the liquid inlet of the anaerobic tank (11) via a buffer tank discharge pump (16).

10. The kitchen waste treatment system according to claim 1, characterized in that: The feeding port of the oversize conveying device (12) is arranged below the screening machine (3), the feeding port of the oversize conveying device (12) is connected to the light matter discharge port of the screening machine (3), a deodorizing pipe (14) is arranged between the oversize conveying device (12) and the screening machine (3), and the feeding port of the oversize conveying device (12) is connected to the feeding port of the light matter recovery device (13).

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