CN114535253B - Kitchen waste recycling treatment system and method - Google Patents

Abstract

The application particularly discloses a kitchen waste recycling treatment system and method. A resourceful treatment system for kitchen waste comprises a breaking and sorting device, a breaking and pulping device, a demulsification and separation device and an aerobic fermentation device; the breaking and sorting device is used for crushing the kitchen waste for one time and separating leachate, garbage particles and difficultly-broken objects in the kitchen waste; the crushing and pulping device is used for secondarily crushing the garbage particles, and in the secondary crushing process, leachate obtained by the crushing and sorting device is added into the crushing and pulping device in multiple times; the demulsification separation device is used for separating the slurry obtained by the crushing separation device into material slag, water and oil; and feeding the material residues into an aerobic fermentation device to ferment the fertilizer. This application has the advantage that improves kitchen garbage resource utilization efficiency.

Description

Kitchen waste recycling treatment system and method

Technical Field

The application relates to the field of kitchen waste treatment, in particular to a kitchen waste recycling treatment system and method.

Background

The kitchen waste comprises kitchen waste, household kitchen waste and other kitchen waste, and the kitchen waste is also called wet waste and perishable waste, contains extremely high moisture and organic matters, and can be easily destroyed to generate stink. The treatment of kitchen waste is always a difficult point and a pain point of the treatment of household garbage.

The common kitchen waste treatment methods at present comprise a landfill method and a burning method, the landfill method occupies land resources, and the kitchen waste is easy to deteriorate after being buried, so that the land, the air and the water resources are polluted; if an incineration means is adopted, the kitchen waste has higher water content, and has the problems of fuel consumption and low efficiency.

However, the above treatment methods cannot effectively utilize organic matters in the kitchen waste, and thus waste is caused.

Disclosure of Invention

In order to improve the resource utilization efficiency of the kitchen waste, the application provides a kitchen waste recycling system and a kitchen waste recycling method.

In a first aspect, the present application provides a kitchen waste recycling disposal system, which adopts the following technical scheme:

a kitchen waste recycling treatment system comprises a breaking and sorting device, a breaking and pulping device, a demulsification and separation device and an aerobic fermentation device;

the breaking and sorting device is used for crushing the kitchen waste for one time and separating leachate, garbage particles and difficultly-broken objects in the kitchen waste;

the crushing and pulping device is used for secondarily crushing garbage particles, and in the secondary crushing process, leachate obtained by the crushing and sorting device is added into the crushing and pulping device in a plurality of times;

the demulsification separation device is used for separating the slurry obtained by the crushing separation device into material slag, water and oil; and feeding the material residues into an aerobic fermentation device to ferment the fertilizer.

Kitchen garbage is through breaking up sorting unit dehydration and once smashing the back, is subdivided into liquid filtration liquid, the difficult junk of solid-state granule and solid-state large granule, and the rubbish granule gets into broken slurrying device afterwards and carries out the regrinding, and the in-process leachate of regrinding adds again in rubbish in the gradation, and organic component in the leachate carries out reuse on the one hand, and on the other hand has still reduced the cost of handling the leachate. The reason that the system adopts the operation process of firstly dewatering and then replenishing the leachate in the pulping process is as follows: on the one hand dewaters the rubbish from cooking earlier and is favorable to improving the kibbling homogeneity of rubbish from cooking, and on the other hand filtration liquid later stage adds the thick liquid in turn, is favorable to improving the kibbling homogeneity of rubbish and reduces the granularity of rubbish, can also reduce simultaneously because the thick liquid is kibbling rubbish when the after-treatment subsides to cause the rubbish from cooking to be detained and be difficult to the problem of handling.

The prepared slurry enters a demulsification separation device, the demulsification separation device separates water phase, oil phase and residues in the slurry, the water phase can be reused for pulping or directly enters a sewage treatment system, the oil phase can be used as a raw material for preparing biodiesel, and the residues enter an aerobic fermentation device for fermentation to obtain a fertilizer.

Through the gradual processing of above device to kitchen garbage, improved kitchen garbage's resource utilization efficiency on the one hand, reduced environmental pollution, on the other hand has simplified kitchen garbage's the processing degree of difficulty. By separating oil, water and residues in the kitchen waste, the fermentation speed of the residues is accelerated, the condition that the direct fermentation speed of the kitchen waste is slow due to overhigh salt content in the kitchen waste is reduced, the condition that the oil phase in the kitchen waste is difficult to ferment is also avoided, and the energy in the oil phase is wasted during fermentation.

Preferably, the fragmentation sorting device comprises a casing, a centrifugal cylinder is arranged in the casing, one end of the centrifugal cylinder is provided with an opening, one end of the centrifugal cylinder, which is far away from the opening, is provided with a driving motor for driving the centrifugal cylinder to rotate, the opening end of the centrifugal cylinder is also coaxially provided with a coaming, and the wall of the centrifugal cylinder is provided with a plurality of through holes.

Through above-mentioned technical scheme, when driving motor drove the centrifuge bowl and rotates, moisture in the rubbish from cooking in the centrifuge bowl was thrown away from the through-hole to the completion is to the operation of rubbish from cooking dehydration, and then has made things convenient for follow-up rubbish from cooking to carry out once smashing in the centrifuge bowl, has improved the convenience of operation.

Preferably, the coaxial cover in the outside of centrifuging barrel is equipped with a broken section of thick bamboo, the centrifuging barrel deviates from open-ended one side and is provided with a pivot, the cross-section of pivot is the polygon, and broken cover is established in the pivot, and the coaxial rigid coupling of the one end and the driving motor that centrifuging barrel was kept away from to the pivot, the coaxial rigid coupling of the one end that broken section of thick bamboo deviates from centrifuging barrel has a camshaft, sets up the curve groove of head and the tail intercommunication on the global of camshaft, is provided with the reference column that is used for imbedding the curve inslot on the casing, has seted up the bar hole on broken barrel global, and the length direction in bar hole sets up along the axis of broken barrel, and the bar is downthehole along the length direction evenly distributed in bar hole has a plurality of broken sword.

Preferably, the through hole is in a long strip shape, the length direction of the through hole is parallel to the length direction of the centrifugal cylinder, and a plurality of cutters are arranged on the through hole at intervals along the length direction of the through hole.

Preferably, the crushing knife is in an isosceles triangle shape, and the bottom edge of the isosceles triangle is arranged towards the side wall of the bar hole and fixedly connected with the side wall of the bar hole;

the cutting knife is in a strip shape, and two ends of the cutting knife in the length direction are fixedly connected with the side walls on two sides of the through hole in the length direction respectively.

When the locating column embedding camshaft curved groove inside to during with the mutual screens of camshaft curved groove, reciprocating sliding motion is done to broken section of thick bamboo along self axis, thereby broken sword takes place relative movement with the cutter, through the shearing between broken sword and the cutter, will paste because centrifugal action and carry out the breakage at the rubbish on the centrifuge bowl lateral wall.

The crushing cutter is triangular, and the cutting strip is limited in a long strip shape, so that the crushing cutter is in inclined contact with the cutter when the crushing barrel slides in a reciprocating mode along the axis direction, and the shearing and crushing efficiency is improved.

Preferably, the casing is provided with a control assembly for controlling the positioning column to be embedded into or separated from the curved groove, the control assembly comprises a hinged rod, one end of the hinged rod is hinged with the casing, and the other end of the hinged rod is provided with a locking piece for fixing the position of the hinged rod.

The staff can control the positioning column to be embedded into the curved groove or separated from the curved groove through the hinge rod, so that the staff can conveniently adjust the working state of the breaking and sorting device. The setting of locking piece can be fixed two position states of hinge bar to the stability of hinge bar control reference column state has been improved.

Preferably, still be provided with a fixed subassembly in the casing, fixed subassembly is including setting up the push pedal of keeping away from broken section of thick bamboo tip at the camshaft, the tip that the push pedal deviates from the camshaft still is provided with a bearing, the inner circle and the push pedal rigid coupling of bearing, and the outer lane rigid coupling of bearing has a mounting panel, and the one side that the mounting panel deviates from the push pedal rotates and is connected with a connecting rod, and the casing is worn out to the connecting rod, connecting rod and casing threaded connection.

When the fragmentation sorting device is in a dehydration state, a worker can rotate the connecting rod in a screwing mode, and the crushing barrel is pushed to the centrifugal barrel by the push plate, so that the crushing barrel is limited to slide along the self axial direction, and the stability of dehydration work is improved.

Preferably, when the bottom wall of the crushing cylinder and the bottom wall of the centrifugal cylinder are attached to each other, the vertex angle of the crushing knife is positioned between the two adjacent cutting knives.

Through the technical scheme, when the breaking and sorting device is in a dehydration working state, the space between the adjacent cutters is further divided by the breaking cutters, so that the actual water leakage aperture is reduced, and the leakage of garbage from the centrifugal cylinder during dehydration operation is reduced.

Preferably, the bounding wall can be dismantled with the centrifuge bowl and be connected, the rigid coupling has the lug on the centrifuge bowl is towards the terminal surface of bounding wall, sets up the connecting hole that holds the lug and pass on the bounding wall, and one side that the bounding wall deviates from the centrifuge bowl is provided with the briquetting, briquetting and lug screw-thread fit to the border screens of briquetting and connecting hole.

In a second aspect, the present application provides a method for resourceful disposal of kitchen waste, which adopts the following technical scheme:

a kitchen waste recycling method comprises the following steps:

s1, classifying kitchen waste, screening the waste, and removing large waste which does not belong to the kitchen waste;

s2, breaking and sorting treatment, namely dehydrating and primary crushing the kitchen waste in sequence, clearing out difficultly-broken objects in the kitchen waste, and burning or burying the difficultly-broken objects;

s3, crushing and pulping, namely performing secondary crushing on the garbage subjected to primary crushing, and gradually adding leachate obtained in the dehydration step S2 in the secondary crushing process to obtain slurry;

s4, carrying out rotational flow sand production to remove sand and stone in the slurry;

s5, demulsifying and separating, namely heating the slurry to demulsify the slurry, discharging the water phase into a sewage treatment system, feeding the oil phase into biodiesel for regeneration, and performing aerobic fermentation on residues.

In summary, the present application has the following beneficial effects:

1. the kitchen waste recycling disposal system treats and separates kitchen waste, improves the treatment efficiency of the kitchen waste on the one hand, and improves the utilization efficiency of the kitchen waste on the other hand.

2. The crushing and sorting device has the advantages that the crushing and sorting device is firstly dehydrated and then crushed, so that the crushing uniformity of kitchen waste is improved, and on the other hand, the kitchen waste is sequentially dehydrated in the centrifugal cylinder, so that the crushing operation is realized, the working continuity is high, the operation is convenient and fast, and the treatment efficiency of the waste is high.

Drawings

FIG. 1 is a flow chart showing the overall structure of a kitchen waste recycling system according to the present invention;

FIG. 2 is a schematic front view of the fragmentation sorting apparatus;

FIG. 3 is a schematic view of the back side of the fragmentation sorting apparatus;

FIG. 4 is a schematic view of the internal structure of the fragmentation sorting apparatus;

FIG. 5 is an enlarged view of detail A of FIG. 4;

FIG. 6 is a schematic view of the overall structure of the centrifugal cylinder and the crushing cylinder;

fig. 7 is a schematic structural diagram showing the control assembly and the fixing assembly.

In the figure, 1, a fragmentation sorting device; 11. a housing; 12. a centrifugal cylinder; 121. a through hole; 122. a cutter; 123. enclosing plates; 124. a bump; 125. connecting holes; 126. pressing into blocks; 13. a drive motor; 14. a crushing cylinder; 141. a camshaft; 142. a curved groove; 143. a bar hole; 144. a crushing knife; 15. a rotating shaft; 16. closing the cover; 17. a control component; 171. a hinged lever; 172. a positioning column; 173. a fixing plate; 174. a fixing groove; 175. a connecting bolt; 18. a fixing assembly; 181. pushing a plate; 182. a bearing; 183. mounting a plate; 184. a connecting rod; 19. a drainage plate; 191. a slideway; 192. a slide bar; 193. a cylinder; 194. a liquid outlet; 195. a solids outlet; 2. a crushing pulping device; 3. a cyclone desanding device; 4. a demulsification separation device; 41. a demulsification tank; 42. a sedimentation tank; 5. an aerobic fermentation device.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

A kitchen waste recycling treatment system is shown in figure 1 and comprises a breaking and sorting device 1, a breaking and pulping device 2, a rotational flow desanding device 3, a demulsification and separation device 4 and an aerobic fermentation device 5.

Screening the kitchen waste, and then, dewatering and crushing the kitchen waste for the first time in a breaking and sorting device 1 to obtain leachate, garbage particles and difficultly-broken objects; wherein the hard-to-crush object is burned or buried, the garbage particles enter the crushing pulping device 2 for secondary crushing, leachate is added into the garbage particles in the secondary crushing process for pulping, and water is added into the crushing pulping device 2 after the secondary crushing to adjust the water content in the pulp to 90 percent (weight). The slurry obtained by the crushing pulping device 2 enters a cyclone desanding device 3 to remove sand and stone in the slurry, then the slurry enters a demulsification separation device 4, the demulsification separation device 4 is used for heating, demulsifying and standing for layering, the demulsification separation device 4 is used for separating slag, a water phase and an oil phase, wherein the oil phase is used for preparing biodiesel, the water phase enters a sewage treatment system, and the slag enters an aerobic fermentation device 5 to be fermented into fertilizer.

As shown in fig. 2, 3 and 4, the fragmentation sorting device 1 includes a casing 11, a centrifugal cylinder 12 is disposed in the casing 11, an axis of the centrifugal cylinder 12 is horizontally disposed, one end of the centrifugal cylinder 12 is open, and the other end is closed. The peripheral surface of the centrifuge tube 12 is provided with a plurality of strip-shaped through holes 121, the through holes 121 communicate the inside and the outside of the centrifuge tube 12, and the length direction of the through holes 121 is parallel to the axis of the centrifuge tube 12. A plurality of through holes 121 are evenly distributed on the circumferential surface of the centrifuge bowl 12 around the axis of the centrifuge bowl 12. A plurality of cutters 122 are uniformly arranged in each through hole 121 along the length direction of the through hole 121, each cutter 122 is in a strip shape, and two ends of each cutter 122 in the length direction are fixedly connected with the corresponding inner wall of the through hole 121 respectively. The side wall of the casing 11 at the closed end of the centrifugal cylinder 12 is provided with a driving motor 13 for driving the centrifugal cylinder 12 to rotate. When the driving motor 13 drives the centrifugal cylinder 12 to rotate, the garbage in the centrifugal cylinder 12 is blocked by the edge of the through hole 121 and the cutter 122, and the free water in the garbage is thrown out of the centrifugal cylinder 12, so as to achieve the purpose of dewatering the garbage.

As shown in fig. 4 and 5, a baffle plate 123 is further disposed at the open end of the centrifuge bowl 12, the baffle plate 123 may be in a shape of a circular plate or a circular ring, and the baffle plate 123 is coaxially covered on the opening of the centrifuge bowl 12, and the baffle plate 123 is detachably connected to the centrifuge bowl 12. Specifically, a plurality of protrusions 124 are fixedly connected to the end of the centrifuge tube 12 facing the shroud 123. In one embodiment of the present application, the number of the bumps 124 may be 3. The protrusions 124 are uniformly distributed around the centrifuge bowl 12, and the corresponding shroud 123 has a plurality of connection holes 125, so that when the shroud 123 is covered on the opening end of the centrifuge bowl 12, the protrusions 124 are inserted into the connection holes 125. The one side that the bounding wall 123 deviates from centrifuge bowl 12 is provided with briquetting 126, and briquetting 126 has a screw rod towards the one end rigid coupling of lug 124, corresponds that lug 124 offers the screw that holds the screw rod and penetrate towards the one side of briquetting 126, through the screw-thread fit between screw and the screw rod to bounding wall 123 can be pressed to briquetting 126, and fixes bounding wall 123 at the opening part of centrifuge bowl 12.

When the baffle plate 123 is circular, workers can feed materials into the centrifugal cylinder 12 through the hole in the center of the baffle plate 123, so that the operation convenience is improved, on the other hand, when the centrifugal cylinder 12 rotates, garbage in the centrifugal cylinder 12 is tightly attached to the cylinder wall of the centrifugal cylinder 12 under the action of centrifugal force, the baffle plate 123 reduces the condition that kitchen garbage spills out from the opening end of the centrifugal cylinder 12, and the stability of dehydration work is improved.

As shown in fig. 2, a working hole communicated with the centrifugal cylinder 12 is formed on one side of the casing 11 facing the opening of the centrifugal cylinder 12, so that workers can add garbage into the centrifugal cylinder 12 through the working hole or take out hard-to-crush matters in kitchen garbage from the centrifugal cylinder 12. The working hole is also hinged with a closing cover 16, when the fragmentation sorting device 1 works, the closing cover 16 closes the machine shell 11, thereby reducing the spilling of garbage.

As shown in fig. 6, a crushing cylinder 14 is coaxially sleeved outside the centrifugal cylinder 12, and an inner circumferential surface of the crushing cylinder 14 and an outer circumferential surface of the centrifugal cylinder 12 are attached to each other. A rotating shaft 15 is arranged at one side of the closed end of the centrifugal cylinder 12 facing the crushing cylinder 14, the cross section of the rotating shaft 15 can be square (in other embodiments of the present application, the cross section of the rotating shaft 15 can also be any polygon), the central axis of the rotating shaft 15 is coaxially arranged with the centrifugal cylinder 12, the rotating shaft 15 penetrates through the crushing cylinder 14 and the rotating shaft 15 is coaxially and fixedly connected with the output shaft of the driving motor 13, so that the driving motor 13 can simultaneously drive the centrifugal cylinder 12 and the crushing cylinder 14 to rotate, and the crushing cylinder 14 can also slide along the length direction of the rotating shaft 15 while rotating around the rotating shaft 15 when the crushing cylinder 14 rotates.

As shown in fig. 6, a cam shaft 141 is disposed on a surface of the crushing cylinder 14 away from the centrifuge cylinder 12, the cam shaft 141 is sleeved on an outer side of the rotating shaft 15, and an end surface of the crushing cylinder 14 of the cam shaft 141 is coaxially and fixedly connected. The circumferential surface of the cam shaft 141 is provided with a curved groove 142, and the curved groove 142 is connected end to end on the circumferential surface of the cam shaft 141 to form a closed ring.

As shown in fig. 2 and 7, a control assembly 17 is disposed on the housing 11, the control assembly 17 includes a hinge rod 171 hinged on the housing 11, a locking member 173 for fixing the position of the hinge rod 171 is disposed at the other end of the hinge rod 171, the hinge point of the hinge rod 171 is as high as the highest point of the camshaft 141, and the rotation direction of the hinge rod 171 is the same as the rotation direction of the camshaft 141. Articulated pole 171 rotates towards one side of camshaft 141 and is connected with a reference column 172, and the staff can be through rotating articulated pole 171 with reference column 172 embedding curve groove 142 in to when pivot 15 drives broken section of thick bamboo 14 and rotate and broken section of thick bamboo 14 drives camshaft 141 and rotates, reference column 172 slides in curve groove 142, through the screens of reference column 172 and curve groove 142 lateral wall, thereby broken section of thick bamboo 14 can be around the reciprocal slip of axis direction of self when the pivoted.

The circumferential surface of the crushing barrel 14 is provided with a plurality of holes 143, the length direction of each hole 143 is parallel to the axial direction of the crushing barrel 14, the plurality of holes 143 are uniformly distributed on the circumferential surface of the crushing barrel 14 around the axial line of the crushing barrel 14, the holes 143 on the crushing barrel 14 and the through holes 121 on the centrifugal barrel 12 are in one-to-one correspondence, each hole 143 is internally provided with a crushing knife 144, the crushing knives 144 are arranged in a plurality, the crushing knives 144 are distributed at intervals along the length direction of the holes 143, the crushing knives 144 are integrally isosceles triangle, and the bottom edge of the isosceles triangle is arranged towards the side wall of the hole 143 and fixedly connected with the side wall of the hole 143. When the crushing barrel 14 slides back and forth along the axis of the crushing barrel, the kitchen waste is crushed by the extrusion shearing between the crushing knife 144 and the cutting knife 122.

When the hinged lever 171 rotates in a direction away from the cam, the positioning column 172 is disengaged from the curved groove 142, and at this time, the fragmentation and sorting device 1 is in a dehydration working state, the centrifuge tube 12 and the fragmentation tube 14 rotate synchronously at the same speed under the driving of the driving motor 13, so that the free water in the garbage in the centrifuge tube 12 is thrown out.

When the hinged rod 171 rotates towards the direction of the cam shaft 141 and the positioning column 172 is inserted into the curved groove 142, the fragmentation sorting device 1 is in a primary crushing working state, and the garbage in the centrifuge bowl 12 is squeezed out from the gap between the adjacent cutters 122 by the centrifugal motion and is cut and crushed by the crushing knife 144 reciprocating along the axis of the crushing bowl 14.

The locking member 173 includes a connecting bolt 176 provided at an end of the hinge lever 171 and a fixing plate 174 fixedly coupled to the housing 11, and the fixing plate 174 is provided in two numbers corresponding to two rotation states of the hinge lever 171. The fixing plate 174 is formed with a fixing groove 175 for receiving the hinge rod 171, and the connection bolt 176 is simultaneously inserted through the hinge rod 171 and threadedly coupled to the fixing plate 174. The worker may rotate the hinge lever 171 and rotate the hinge lever 171 into the fixing groove 175 of the corresponding fixing plate 174, and then the worker may screw the coupling bolt 176 to screw-fix the coupling bolt 176 with the fixing plate 174, thereby fixing the hinge lever 171.

In one embodiment of the present application, the projection of the curved groove 142 on the tangential plane of the circumferential surface of the camshaft 141 is a half-cycle sine function curve. Therefore, when the crushing barrel 14 rotates around the rotating shaft 15 at a constant speed, the cam shaft 141 drives the crushing barrel 14 to slide back and forth more stably, and the stability of crushing work is improved.

In one embodiment of the present application, the sliding stroke of the crushing cylinder 14 is 2-5 times the distance between the crushing blades 144, so that the crushing blades 144 can contact with the plurality of cutting blades 122 on the centrifugal cylinder 12 and crush the garbage when the crushing cylinder 14 performs one reciprocating sliding, thereby improving the crushing efficiency.

As shown in fig. 7, a fixing assembly 18 is further disposed in the housing 11, the fixing assembly 18 includes a push plate 181 located on a side of the cam shaft 141 away from the crushing cylinder 14, the push plate 181 is sleeved on a side of the push plate 181 away from the cam shaft 141 and is provided with a bearing 182, an inner ring of the bearing 182 is fixedly connected to the push plate 181, and an outer ring of the bearing 182 is fixedly connected to a mounting plate 183. Rotate on the mounting panel 183 and be connected with connecting rod 184, connecting rod 184 is provided with two, and two connecting rods 184 are located the both sides of pivot 15 respectively, have seted up the external screw thread in the one end of keeping away from mounting panel 183 on connecting rod 184, and the one end that mounting panel 183 was kept away from to connecting rod 184 is worn out casing 11 and is connected with casing 11 threaded connection. When the worker rotates the connecting rod 184, after the positioning column 172 is separated from the curved groove 142, the worker can rotate the connecting rod 184, so that the connecting rod 184 pushes the cam shaft 141 to slide toward the centrifuge tube 12, and the inner bottom wall of the crushing tube 14 is abutted to the outer bottom wall of the centrifuge tube 12, at this time, the vertex of the isosceles triangle of the crushing knife 144 is located in the middle of the two adjacent cutters 122 on the centrifuge tube 12, so that when the fragmentation sorting device 1 is in the dehydration working state, the crushing knife 144 further divides the space between the adjacent cutters 122, thereby reducing the actual water leakage aperture, and further reducing the leakage of garbage from the centrifuge tube 12 during the dehydration operation.

In order to facilitate the separation of the obtained products when the breaking and sorting device 1 is subjected to dehydration work or primary crushing work, a flow guide plate 19 is further arranged in the casing 11, one side of the flow guide plate 19 is hinged with the inner wall of the casing 11, a slide rod 192 is arranged on the side wall of the flow guide plate 19, a slide way 191 which is matched with the slide rod 192 is correspondingly arranged on the casing 11, and the slide way 191 is integrally in an arc shape with the hinged point of the flow guide plate 19 as the center of a circle; the casing 11 is provided with an air cylinder 193 for driving the flow guide plate 19 to rotate, the body of the air cylinder 193 is hinged with the side wall of the casing, the piston rod of the air cylinder 193 is hinged with the sliding rod 192, and when the piston rod of the air cylinder 193 contracts or extends, the air cylinder 193 drives the flow guide plate 19 to rotate. A liquid outlet 194 is opened on the casing 11 on the side that deviates from the hinge point of the drainage plate 19, and when the cylinder 193 drives the drainage plate to rotate to the highest position, the edge of the drainage plate 19 is flush with the lower edge of the liquid outlet 194. A solids outlet 195 is also provided in the housing 11 below the liquid outlet 194.

When the fragmentation sorting device 1 is in the operating condition of dehydration, the drainage plate 19 upwards rotates, the leachate obtained by garbage dehydration flows out from the liquid outlet 194 through the guide of the drainage plate 19, when the fragmentation sorting device 1 is in the operating condition of primary crushing, the drainage plate 19 rotates to the vertical state under the drive of the cylinder 193, and then garbage particles after primary crushing fall into the bottom wall of the casing 11, and workers can take out the garbage particles from the solid outlet 195. The difficultly broken objects are retained in the centrifugal cylinder 12, and workers can detach the coaming 123 on the centrifugal cylinder 12 and then clear the difficultly broken objects in the centrifugal cylinder 12.

In conclusion, the breaking and sorting device 1 can separate leachate, garbage particles and difficultly-broken objects in the garbage.

The garbage particles treated by the crushing and sorting device 1 enter the crushing and pulping device 2, the garbage particles are subjected to secondary crushing in the crushing and pulping device 2, the garbage particles are crushed into powder with the particle size not larger than 10mm after the secondary crushing, in the crushing process, leachate is gradually added into the crushing and pulping device 2 to obtain slurry, and finally, the leachate is added into the slurry until the water content in the slurry is 90 percent and then enters the cyclone desanding device 3. The water can come from a municipal water supply system, and can also be water phase separated by the demulsification and separation device 4 or condensed water produced by an aerobic fermentation device.

The cyclone desanding device 3 is specifically a cyclone desander, and further separates the sand from the slurry through the cyclone desanding device to remove the sand in the slurry, and then the slurry enters the emulsion breaking and separating device 4.

The demulsification separation device 4 comprises a demulsification tank 41 and a sedimentation tank 42, and the desanded slurry firstly enters the demulsification tank 41 to be heated to 90-100 ℃, and is kept at the temperature for 30-60min. The slurry then enters a settling tank 42 for standing and layering.

After layering, the oil phase at the upper layer can be used for preparing the biodiesel; the lower water phase can directly enter a sewage treatment system or be used for adjusting the water content of the slurry in the fragmentation sorting device 1; the precipitated slag enters an aerobic fermentation device 5, a microbial inoculum is added for sample fermentation, and condensed water generated during the sample fermentation can be used for preparing slurry by the chopping and sorting device 1.

A kitchen waste recycling method comprises the following steps:

s1, classifying kitchen waste, screening the waste, and removing large waste which does not belong to the kitchen waste;

s2, performing fragmentation and sorting treatment, namely dehydrating and crushing the kitchen waste for one time in sequence, removing difficultly-fragmented substances in the kitchen waste, and burning or burying the difficultly-fragmented substances;

s3, crushing and pulping, namely performing secondary crushing on the garbage particles subjected to primary crushing, gradually adding percolate obtained in the S2 dehydration process in the secondary crushing process to obtain slurry, and then supplementing water into the slurry until the water content of the slurry reaches 90wt%;

s4, carrying out rotational flow sand production to remove sand and stone in the slurry;

s5, demulsification and separation, namely heating the slurry to demulsify the slurry, then separating oil, water and residues, discharging the water phase into a sewage treatment system, feeding the oil phase into biodiesel for regeneration, and feeding the residues into an aerobic fermentation device 5 for fermentation.

The water phase obtained after demulsification and separation can also be added into a crushing and pulping device for adjusting the water content of the pulp.

Condensed water generated during aerobic fermentation can be added into the demulsification pulping device for adjusting the water content of the pulp.

The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. A kitchen waste recycling treatment system is characterized by comprising a breaking and sorting device (1), a breaking and pulping device (2), a demulsification and separation device (4) and an aerobic fermentation device (5);

the breaking and sorting device (1) is used for crushing the kitchen waste for one time and separating leachate, garbage particles and difficultly-broken objects in the kitchen waste;

the crushing and pulping device (2) is used for secondarily crushing garbage particles, and in the secondary crushing process, leachate obtained by the crushing and sorting device (1) is added into the crushing and pulping device (2) in a plurality of times;

the demulsification separation device (4) is used for separating the slurry obtained by the crushing pulping device (2) into material residues, water and oil; the material residues enter an aerobic fermentation device (5) to ferment the fertilizer;

the fragmentation sorting device (1) comprises a machine shell (11), wherein a centrifugal cylinder (12) is arranged in the machine shell (11), one end of the centrifugal cylinder (12) is provided with an opening, one end, deviating from the opening, of the centrifugal cylinder (12) is provided with a driving motor (13) for driving the centrifugal cylinder (12) to rotate, the opening end of the centrifugal cylinder (12) is further coaxially provided with a surrounding plate (123), and the wall of the centrifugal cylinder (12) is provided with a plurality of through holes (121);

the coaxial cover in the outside of centrifuge bowl (12) is equipped with a broken section of thick bamboo (14), centrifuge bowl (12) deviates from open-ended one side and is provided with a pivot (15), the cross-section of pivot (15) is the polygon, and broken section of thick bamboo (14) cover is established on pivot (15), and the one end and the coaxial rigid coupling of driving motor (13) of centrifuge bowl (12) are kept away from in pivot (15), broken section of thick bamboo (14) deviate from the coaxial rigid coupling of one end of centrifuge bowl (12) and have a camshaft (141), set up curve groove (142) of head and the tail intercommunication on the global of camshaft (141), be provided with on casing (11) and be used for imbedding reference column (172) in curve groove (142), seted up on broken section of thick bamboo (14) global strip hole (143), the length direction of strip hole (143) sets up along the axis of broken section of thick bamboo (14), the length direction evenly distributed of strip hole (143) interior edge strip hole (143) has a plurality of broken sword (144).

2. The kitchen waste recycling system according to claim 1, wherein the through hole (121) is long, the length direction of the through hole (121) is parallel to the length direction of the centrifugal cylinder (12), and a plurality of cutters (122) are arranged on the through hole (121) at intervals along the length direction of the through hole (121).

3. The kitchen waste recycling system according to claim 2, wherein the crushing knife (144) is in the shape of an isosceles triangle, and the bottom side of the isosceles triangle is arranged toward the side wall of the bar hole (143) and is fixedly connected with the side wall of the bar hole (143);

the cutting knife (122) is long, and two ends of the cutting knife (122) in the length direction are fixedly connected with the side walls of the two sides of the through hole (121) in the length direction respectively.

4. The kitchen waste recycling system according to claim 1, wherein the cabinet (11) is provided with a control assembly (17) for controlling the positioning posts (172) to be inserted into or separated from the curved slots (142), the control assembly (17) comprises a hinge rod (171), one end of the hinge rod (171) is hinged to the cabinet (11), and the other end of the hinge rod is provided with a locking member (173) for fixing the position of the hinge rod (171).

5. The kitchen waste recycling system according to claim 1 or 4, wherein a fixing component (18) is further arranged in the housing (11), the fixing component (18) comprises a push plate (181) arranged at the end of the cam shaft (141) far away from the crushing cylinder (14), a bearing (182) is further arranged at the end of the push plate (181) far away from the cam shaft (141), the inner ring of the bearing (182) is fixedly connected with the push plate (181), the outer ring of the bearing (182) is fixedly connected with a mounting plate (183), one surface of the mounting plate (183) far away from the push plate (181) is rotatably connected with a connecting rod (184), the connecting rod (184) penetrates out of the housing (11), and the connecting rod (184) is in threaded connection with the housing (11).

6. The kitchen waste recycling system as recited in claim 5, wherein when the bottom wall of said crushing cylinder (14) and the bottom wall of the centrifugal cylinder (12) are abutted against each other, the top corner of the crushing knife (144) is located between two adjacent cutting knives (122).

7. The kitchen waste recycling treatment system according to claim 1, wherein the surrounding plate (123) is detachably connected with the centrifugal cylinder (12), a protrusion (124) is fixedly connected to an end face, facing the surrounding plate (123), of the centrifugal cylinder (12), a connecting hole (125) through which the protrusion (124) passes is formed in the surrounding plate (123), a pressing block (126) is arranged on one side, facing away from the centrifugal cylinder (12), of the surrounding plate (123), the pressing block (126) is in threaded fit with the protrusion (124), and the pressing block (126) is clamped with an edge of the connecting hole (125).

8. The method for recycling kitchen waste according to any one of claims 1 to 7, comprising the steps of:

s1, classifying kitchen waste, screening the waste, and removing large waste which does not belong to the kitchen waste;

s2, performing fragmentation and sorting treatment, namely dehydrating and crushing the kitchen waste for one time in sequence, removing difficultly-fragmented substances in the kitchen waste, and burning or burying the difficultly-fragmented substances;

s3, crushing and pulping, namely performing secondary crushing on the garbage subjected to primary crushing, and gradually adding leachate obtained in the dehydration step S2 in the secondary crushing process to obtain slurry;

s4, removing sand by rotational flow, and removing sand in the slurry;

s5, demulsification and separation, namely heating the slurry to demulsify the slurry, discharging the water phase into a sewage treatment system, feeding the oil phase into biodiesel for regeneration, and performing aerobic fermentation on residues.

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