CN106269797B

CN106269797B - Kitchen garbage level four is selected separately edulcoration system

Info

Publication number: CN106269797B
Application number: CN201610735482.4A
Authority: CN
Inventors: 宋淼; 王海云; 杨华; 杨林波; 刘洋; 瞿忠卫
Original assignee: Endurance & Mes Chongqing Environment Co ltd
Current assignee: Chongqing Naide Ecological Technology Co ltd
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2018-11-27
Anticipated expiration: 2036-08-26
Also published as: CN106269797A

Abstract

The invention provides a kitchen waste four-stage sorting and impurity removing system, which comprises a coarse material sorting system, a crushing, humidifying and pulping system, a light foreign material sorting system and a fine sand sorting system which are sequentially arranged according to the sorting flow direction of kitchen waste, wherein the coarse material sorting system comprises a coarse material sorting machine, and the coarse material sorting machine comprises: a frame; the rotating shaft comprises a plurality of rotating shafts, a plurality of triangular disc groups are sleeved on each rotating shaft and are uniformly spaced by a plurality of cushion blocks, each cushion block enables a spacing space to be formed between every two adjacent triangular disc groups, the triangular disc groups on the adjacent rotating shafts are arranged in a staggered mode, the triangular disc groups on the rotating shafts can be respectively embedded into the spacing spaces close to the rotating shafts, gaps are reserved, each triangular disc group comprises at least one right triangular disc, and each edge of each right triangular disc is set to be an arc-shaped edge protruding outwards; a drive mechanism. The four-stage sorting system provided by the invention can realize high-efficiency sorting of different types of foreign matters in the kitchen waste, and the sorting effect is remarkably improved.

Description

Kitchen garbage level four is selected separately edulcoration system

Technical Field

The invention relates to the technical field of kitchen waste pretreatment, in particular to a four-stage sorting and impurity removing system for kitchen waste.

Background

Kitchen waste refers to the waste left after the food materials are processed in the kitchen. During the formation of kitchen waste, a number of impurities are often incorporated which are not suitable for anaerobic fermentation. For example, the foreign matter is similar to light foreign matters such as disposable lunch boxes, foams, plastic bags, plastic bottles and the like, and is similar to heavy foreign matters such as metal (cutters, spoons), bones, ceramics, bamboo and wood, glass bottles and the like. If the foreign matters cannot be effectively removed, the conveying equipment can be damaged in the conveying process, the normal operation of conveying is hindered, even the subsequent anaerobic fermentation stage of organic matters in the kitchen waste can be greatly influenced, the kitchen waste treatment equipment is damaged, and the kitchen waste treatment effect is greatly reduced. Therefore, in the prior art, when kitchen waste is treated, sorting, crushing and screening are carried out, and then the kitchen waste slurry with the foreign matters removed is sent into an anaerobic fermentation device for biological fermentation of organic substances, so that harmless treatment and resource utilization of the kitchen waste are realized.

A device for automatically sorting kitchen waste is disclosed in the utility model with the Chinese patent number of 201320655113.6. Referring to fig. 1, the device 10 mainly comprises a coarse material separator 11, a crushing and humidifying machine 12, a fine light separator 13 and a fine sand separator 14 which are connected in sequence, and kitchen waste can be separated by the devices in sequence. The coarse material sorting machine 11 in the first stage firstly cracks and disperses coarse materials in the kitchen waste, the coarse materials which are not suitable for fermentation are rolled and discharged, the materials which are suitable for fermentation pass through gaps among the multi-corner disc groups and directly fall into the material receiving and conveying equipment 15, and effective sorting of large inorganic substances in the kitchen waste is realized; the second stage crushing and humidifying machine 12 receives materials from the material receiving and conveying equipment 15, crushes and slurrys the slurry after rough separation, separates and discharges heavy objects, and discharges heavy materials such as metal, ceramic, glass and the like; the fine light sorting machine 13 in the third stage receives the materials from the crushing and humidifying machine 12, and catches and removes fermentation discomfort materials such as plastic bags, bamboos and the like which cannot be removed; the fine sand classifier 14 in the fourth stage receives materials suitable for fermentation from the crushing and humidifying machine 12, and can discharge fine sand and eggshell discomfort materials.

Although the device 10 can sort various foreign matters mixed in the kitchen waste, each stage of equipment has certain defects, so that the sorting efficiency is to be further improved. The defects are as follows:

the invention relates to a coarse material sorting machine 11, which mainly utilizes a plurality of groups of parallel multi-angle discs rotating in the same direction to carry out up-and-down rolling conveying on kitchen waste, so that coarse materials in the kitchen waste can be broken and dispersed, and efficient sorting of the coarse materials is completed, therefore, the design of the multi-angle discs is very important, in the invention patent disclosed by the Chinese patent No. 201210293974.4, a solid-liquid separation and solid waste breaking and sorting device is disclosed, referring to the drawings 2 to 3, the device 20 mainly comprises a main frame 21, a plurality of rotating shafts 23 arranged on the main frame 21 through bearing seats 22 and a plurality of rotating disc groups 24 arranged on each rotating shaft 23, adjacent multi-angle disc groups 24 on the same rotating shaft are respectively separated through gaskets 25 to form spacing spaces 26, the multi-angle disc groups on adjacent rotating shafts 23 are arranged in a staggered mode, the multi-angle disc groups on each rotating shaft respectively extend into the spacing spaces 26 between the multi-angle waste sorting table waste groups on the adjacent rotating shafts, and gaps are reserved among the groups of the multi-angle disc groups 24, so that the multi-angle discs are easily influenced by the large and small inclined falling of the large and small-angle of the large-angle-inclined kitchen waste sorting mechanism is easily influenced by the large and the small-angle of the large-angle-inclined kitchen waste when the large-falling kitchen waste sorting mechanism is not easy-falling slurry, the large-and small-angle-angled kitchen waste, the large-angled kitchen waste sorting mechanism, the large-angled kitchen waste is not easy to be discharged, the large-angled kitchen waste sorting mechanism, the large-and the large-angled kitchen waste sorting mechanism, the large-angled kitchen waste is not easy to be discharged, the large-angled kitchen waste sorting mechanism, the large-angled kitchen waste is not easy to be discharged from the large-shaped multi-angled kitchen waste, the large-angled kitchen waste sorting mechanism, the large-angled kitchen waste is not to be discharged when the large-angled kitchen waste sorting mechanism, the large-angled kitchen waste is not to be discharged, the large-angled kitchen waste is not to be difficult to be discharged when the large-angled kitchen waste.

the crushing and humidifying machine 12 mainly comprises a stirring and separating mechanism inside the humidifying machine, and is used for stirring, separating, precipitating, crushing and pulping supplied materials, heavy materials sink to the bottom and are discharged through a screw conveyor at the bottom, and slurry is discharged through the side face of a tank body in an overflowing manner.

the fine light sorting machine 13 mainly utilizes a filter screen 131 arranged inside to filter and remove light foreign matters such as foam, plastics and bamboo wood which can cause scum and crusting in a fermentation tank, a filter liquid groove 132 is arranged below the filter screen 131, an outlet end 133 of the filter screen 131 is connected with a light foreign matter squeezing dehydrator 134, and the light foreign matters discharged from the outlet end are processed by the light foreign matter squeezing dehydrator 134 and then discharged, as shown in fig. 1, because the filter screen is fixedly arranged, and the separated uncomfortable fermented matters belong to light substances, even if the filter screen is properly inclined, a part of foreign matters still adhere to the filter screen and cannot be smoothly sent into the squeezing dehydrator from the outlet end, and the foreign matters block meshes of the filter screen after a long time, so that the sorting failure of the machine is caused, and the sorting efficiency of the light foreign matters is reduced.

the fine sand sorting machine 14 mainly allows fine sand and eggshell discomfort in slurry to slowly pass through an internal settling tank 141, and to descend and stratify under the action of gravity, the slurry suitable for fermentation enters a material storage tank 142 and is output outwards by a liquid conveying pump 143, and the fine sand discomfort precipitated at the bottom of the tank is discharged by a screw conveyor 144.

Disclosure of Invention

The invention aims to provide a four-stage sorting and impurity-removing system for kitchen waste, which improves a polygonal disc group in a coarse material sorting machine into a triangular disc group with certain specificity by improving a coarse material sorting system, and solves the problems that coarse foreign materials in the kitchen waste are not easy to stir when a rotating shaft rotates and the falling speed of kitchen waste slurry and solid waste with small size is low, so that the coarse foreign materials are quickly sorted.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a kitchen garbage level four is selected separately edulcoration system, includes thick thing sorting system, broken humidifying slurrying system, light foreign matter sorting system and the fine sand type sorting system that sets gradually according to kitchen garbage sorting flow direction, wherein, thick thing sorting system includes thick thing sorter, thick thing sorter includes:

the bearing support comprises a frame and a bearing support body, wherein the frame comprises two side plates which are oppositely arranged, a plurality of groups of bearing supports are oppositely arranged on the two side plates, and the plurality of groups of bearing supports are uniformly arranged on the side plates at intervals of preset distances;

the rotating shafts are installed in one-to-one correspondence with the multiple groups of bearing seats, each rotating shaft is sleeved with a plurality of triangular disc groups, two adjacent triangular disc groups are separated by a cushion block, each cushion block enables a space to be formed between two adjacent triangular disc groups, the triangular disc groups on the two adjacent rotating shafts are arranged in a staggered mode, the triangular disc groups on the rotating shafts can be respectively embedded into the space between the triangular disc groups close to the rotating shafts, gaps are reserved, each triangular disc group comprises at least one positive triangular disc, three sides of the positive triangular discs are respectively provided with arc-shaped sides protruding outwards, and the ends of the two adjacent arc-shaped sides are connected to form sharp corners protruding outwards; and the driving mechanism is used for driving the rotating shafts to overturn the kitchen waste in the same direction.

Compared with the prior art, the invention has the following beneficial effects:

the four-stage separation and impurity removal system for the kitchen waste mainly comprises a coarse material separation system, a crushing, humidifying and pulping system, a light foreign material separation system and a fine sand separation system, and the separation of different types of foreign materials in the kitchen waste is realized through the mutual cooperation of the systems, so that the kitchen waste can obtain a better fermentation effect when entering a later fermentation stage. In the coarse material sorting system, the kitchen waste is conveyed in an up-and-down rolling manner by utilizing a plurality of groups of triangular disc groups (with convex sharp corners) which are parallel and rotate in the same direction, so that compared with a pentagonal disc group or a hexagonal disc group, the coarse material sorting system not only can accelerate the breaking and scattering speed of tangled coarse materials, but also is beneficial to shifting medium and large foreign materials in the kitchen waste, and the turning and conveying time is shortened on the basis of not inclining a rack; also because the internal angle of the triangular disc group is reduced relative to the pentagonal disc group or the hexagonal disc group, the kitchen waste slurry and the small-size solid waste fall down from the gap, and the rough separation efficiency of the kitchen waste is accelerated.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for automatically sorting kitchen waste in the prior art;

FIG. 2 is a top view of the existing kitchen waste solid-liquid separation and solid waste breaking and sorting device;

3 FIG. 33 3 is 3a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3A 3- 3A 3 of 3 FIG. 32 3; 3

FIG. 4 is a block diagram of the kitchen waste four-stage sorting and impurity removing system according to the present invention;

FIG. 5 is a top view of the coarse sorting system according to the present invention;

FIG. 6 is a schematic diagram of a positive triangular disc configuration of the coarse sorting system of the present invention;

FIG. 7 is a schematic side view of the coarseness sorting system of the present invention;

FIG. 8 is a left side elevational view of FIG. 7;

FIG. 9 is a schematic structural diagram of a crushing, humidifying and pulping system according to the invention;

FIG. 10 is a front cross-sectional view of the light foreign matter sorting system according to the present invention;

3 FIG. 3 11 3 is 3a 3 sectional 3 view 3 taken 3 along 3 line 3A 3- 3A 3 of 3 FIG. 310 3; 3

FIG. 12 is a top view of the transmission mechanism of the rotating member of the present invention;

FIG. 13 is a schematic structural view of a fine sand sorting system according to the present invention;

FIG. 14 is an internal cross-sectional view of the cyclone sand remover according to the present invention;

FIG. 15 is a simplified layout of the internal spray manifolds of the cone of the present invention;

FIG. 16 is a schematic top view of a cyclone desander according to the invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the drawings and the detailed implementation mode:

referring to fig. 4, the invention provides a four-stage sorting and impurity removing system for kitchen waste. The system comprises a coarse material sorting system 100, a crushing, humidifying and pulping system 200, a light foreign material sorting system 300 and a fine sand sorting system 400, wherein the four systems are sequentially arranged along the sorting flow direction of the kitchen waste. In fig. 4, two four-stage sorting system production lines are shown, and the arrow direction from left to right is the sorting flow direction of the kitchen waste. After the kitchen waste is put into the receiving system, the kitchen waste is sequentially sent into the coarse material sorting system 100, the crushing, humidifying and pulping system 200, the light foreign material sorting system 300 and the fine sand sorting system 400 at a set speed to be subjected to pulp homogenizing, tempering and impurity removing.

The receiving system mainly comprises a receiving tank and a bottom kitchen waste conveyor. For the receiving slot: the kitchen waste treatment device is provided with 1 vehicle unloading station, and the key part contacting with the kitchen waste is made of stainless steel; the receiving tank has a capacity of storing 65% of the total daily treatment amount of kitchen waste within 4 hours. For the bottom kitchen waste conveyor: the kitchen waste is transferred by 1 set of large-diameter screw conveyer corresponding to a four-stage sorting system production line, the screw conveyer adopts a parallel double-helix type, and the key part contacting the kitchen waste is made of stainless steel; and a double-helix conveying mode is adopted, differential motion is adopted, the original kitchen waste is initially cracked, and blockage is not easy to occur.

For the coarse sorting system 100 of fig. 4, reference is made to fig. 5-8 for a detailed schematic. The coarse material sorting system is mainly used for sorting medium and large foreign materials in kitchen waste raw materials, such as disposable lunch boxes, large foams, plastic bottles, glass bottles, large bones and the like.

Referring to fig. 5-6, the present invention is directed to a grit sorting system that includes a grit sorter 110. The coarse separator 110 includes:

the rack 120 comprises two oppositely arranged side plates 121 and 122, and a plurality of groups of bearing seats 123 are oppositely arranged on the two side plates and are uniformly arranged on the side plates at intervals of preset distances;

the rotating shafts 130 are installed in one-to-one correspondence with the plurality of groups of bearing seats, each rotating shaft 130 is sleeved with a plurality of triangular disc groups 140, two adjacent triangular disc groups 140 are separated by a cushion block 141, each cushion block 141 enables a separation space 142 to be formed between two adjacent triangular disc groups 140, the triangular disc groups 140 on two adjacent rotating shafts 130 are arranged in a staggered mode, the triangular disc groups 140 on the rotating shafts 130 can be respectively embedded into the separation spaces 142 between the triangular disc groups adjacent to the rotating shafts 130, and gaps are reserved, each triangular disc group 140 comprises at least one positive triangular disc 143, three sides of the positive triangular disc 143 are respectively provided with arc-shaped sides 143a protruding outwards, and the ends of two adjacent arc-shaped sides 143a are connected to form sharp corners 143b protruding outwards; and a driving mechanism 150 for driving the plurality of rotating shafts 130 to overturn the kitchen waste in the same direction.

The driving mechanism 150 preferably includes a plurality of motors 151, a plurality of driving sprockets (not shown) mounted on the plurality of shafts 130 in a one-to-one and same-side manner, and a driving chain 152 wound around the plurality of driving sprockets, wherein the motors drive one of the shafts to rotate, so that the shafts convey kitchen waste in the same direction.

The gap is used for the kitchen waste slurry and the small-size solid waste to fall down. The number of the right triangular plates in the triangular plate group can be set according to requirements, and one or more of the right triangular plates can be set. Certainly, a certain margin is left when the kitchen waste slurry is embedded into the spacing space close to the rotating shaft, the kitchen waste slurry is not completely clamped by the spacing space and is not propped against the spacing space, and a gap for allowing the kitchen waste slurry and small-size solid waste to fall down needs to be left. To the installation between triangle dish group and the pivot, can adopt the mode of key-type connection plus gasket to fix to the realization is to dismantling of triangle dish group, selects separately with the thick thing that satisfies different kitchen garbage. Only one set of regular triangular discs is shown in fig. 5. Fig. 6 shows a schematic structural diagram of the right triangular plate 143, and a through hole 143c is formed in the center of the right triangular plate 143, and the through hole may be determined according to the shape of the rotation shaft, and is not limited to the circular shape in the drawing. In a preferred embodiment, the radius R of each arc-shaped edge 143a of the regular triangular plate in FIG. 6 is in the range of 100 to 150mm, and the central angle θ is less than 120 degrees to form the sharp angle 143b, preferably 50 to 70 degrees.

In the above scheme, the improvement of the invention over the prior art is that: the pentagonal or hexagonal plate set for turning over the kitchen waste is changed into a triangular plate set, and each triangular plate set comprises at least one right triangular plate with three convex arc-shaped edges and the ends of two adjacent arc-shaped edges are connected to form an outward convex sharp corner 143b, as shown in fig. 6. Because the internal angle of the triangular disc group is reduced relative to the pentagonal disc group or the hexagonal disc group, each angle is equivalent to a sharp angle, the sharp angle is not only beneficial to breaking and scattering large-size easily-scattered solid garbage in the kitchen garbage, but also can play a role of stirring medium and large-size foreign matters in the kitchen garbage when the rotating shaft rotates, and can also accelerate the falling rate of the kitchen garbage slurry and the small-size solid garbage from the gap (relative to the turnover conveying of the pentagonal disc group or the hexagonal disc group with the same rotating speed). Therefore, whether the polygonal disc set is a pentagonal disc set or a hexagonal disc set or a triangular disc set, although the coarse materials of the kitchen waste are sorted, under the condition of the same rotating speed, the triangular disc set has the characteristic that the inner angle is relatively small, so that the special effect is particularly shown. On the basis, the sharp corner 143b is also an arc-shaped sharp corner (see fig. 6), namely three edges of the triangular plate are set to be three same arc-shaped edges 143a, compared with three straight edges, the design can drive kitchen waste slurry and small-size solid waste to rapidly slide down along the arc-shaped edges while stirring foreign matters of the kitchen waste, so that the separation efficiency is improved.

Since there may be some bagged garbage or wrapped garbage mixed in the kitchen garbage, in order to perform the preliminary decomposition of the garbage, the coarse material sorting system of the present invention further comprises: a bag breaking machine 160 for shredding and breaking bagged garbage or wrapped garbage in the kitchen garbage; bag breaker 160 sets up on frame 120 one end upper portion, and has rubbish feed inlet and rubbish discharge gate, the rubbish feed inlet is up in order to receive pending kitchen garbage, the rubbish discharge gate aims at frame 120 this end pivoted axle cam disk group down to send into kitchen garbage to thick thing sorter 110, as shown in fig. 7. That is, the coarse separator 110 receives the kitchen waste processed by the bag breaker 160, and the feeding position is set at one end of the rack.

As shown in fig. 7 in conjunction with fig. 8, a waste transfer chute 124 is disposed below the housing 120, the waste transfer chute 124 is provided with a waste output port 125 at an end adjacent to the bag breaker 160, and a first screw conveyor 170 is disposed below the waste output port 125. The garbage transfer groove is used for receiving kitchen garbage slurry and small-size solid garbage which fall from the triangular disc group gap, and then buffering and transferring. The upper end of the waste transfer groove 124 is surrounded by four vertical plates, and the lower end is an inverted cone-shaped structure with an inclined bottom, so that the design is favorable for the flowing of kitchen waste slurry and small-sized solid waste towards a low position, and the kitchen waste slurry and the small-sized solid waste flow out from a waste output port and enter the first spiral conveying device 170. The slurry is conveyed to a next-stage crushing, humidifying and pulping system by a first screw conveyer 170.

Further, the frame is provided with a foreign material conveyor 180 at an outer side of an end thereof far from the crusher to output medium and large foreign materials sorted by the coarse sorting machine 110 to the outside, as shown in fig. 7. Namely, the kitchen waste slurry and the small-size solid waste are output to the first spiral conveying device 170 from one end of the rack, and the sorted foreign matters are output to the foreign matter conveyor 180 from the other end of the rack, and the directions of the kitchen waste slurry and the small-size solid waste are opposite, so that the coarse substances which are not suitable for fermentation and the materials which are suitable for fermentation are discharged and conveyed without interference.

In summary, the operation principle of the coarse material sorting system 100 according to the present invention is as follows:

the kitchen waste from the receiving tank passes through the bag breaking machine 160 to complete preliminary decomposition; then, a plurality of parallel equidirectional rotating triangular disc groups on the coarse material sorting machine 110 convey kitchen waste in an up-and-down rolling mode, the rotating triangular disc groups can effectively break and disperse tangled coarse materials, coarse materials which are not suitable for fermentation are rolled and discharged to the foreign material conveyor 180, materials which are suitable for fermentation pass through gaps between the triangular disc groups and directly fall into a waste transfer groove, and are output to the first spiral conveying device 170 through the waste transfer groove 124, effective sorting of large inorganic substances in the kitchen waste is achieved, the utilization rate of organic matter waste is improved, and effective operation guarantee is provided for a follow-up heavy material sorting system. The system can particularly effectively remove the foam foreign matters which cause scum and crusting in the fermentation tank.

For the fragmentation conditioning pulping system 200 in FIG. 4, a detailed schematic view is shown in FIG. 9. The crushing, humidifying and pulping system is mainly used for sorting heavy foreign matters in kitchen waste raw materials, such as metal dinner spoon and fork, ceramic matters, glass fragments, shell heavy solid slag and the like.

As shown in FIG. 9, the crushing, humidifying and pulping system provided by the invention mainly comprises a crushing and humidifying machine 210. The crushing dehumidifier 210 includes:

a tank 220 having a sediment discharge port 221 formed at a bottom thereof, the sediment discharge port 221 being connected to one end of a slag discharge passage 222, the slag discharge passage 222 having a certain height;

a second screw conveyor 230 disposed obliquely below the tank 220 and having a feed end 231 connected to the other end of the slag channel 222 to receive the heavy deposits temporarily present in the slag channel 222; wherein, the slag discharging channel 222 is provided with an upper pneumatic valve 223 at a position close to the bottom of the tank 220, a lower pneumatic valve 224 at a position close to the second screw conveyer 230, and a section of slag discharging channel 222 is reserved between the lower pneumatic valve 224 and the feeding end 231 of the second screw conveyer, and a water injection pipe 225 is connected to the section of slag discharging channel 222.

In the scheme, the crushing and humidifying machine reserves a section of slag discharging channel between the lower pneumatic valve and the feeding end of the second spiral conveying device to be connected with the water injection pipe, so that the heavy solid slag temporarily stored in the upper slag discharging channel can be injected into the spiral conveying device together with water, and the high-density heavy solid slag can be diluted by using the water, so that the problem of blockage of the inlet of the spiral conveying device is effectively prevented, and the solid slag discharging efficiency is improved.

Wherein, the effect of slagging tap passageway is the heavy foreign matter of keeping in kitchen garbage, for example metal knife and fork, shell material etc.. At the beginning of the kitchen waste entering the tank body, the upper pneumatic valve and the lower pneumatic valve are both in a closed state; after heavy solid slag in the kitchen waste is precipitated in the tank body, the upper pneumatic valve 223 is opened, the lower pneumatic valve 224 is kept closed, and at the moment, the heavy solid slag and a small amount of slurry in the tank body enter the slag discharging channel 222 for temporary storage; when the heavy solid slag in the slag discharging passage 222 is deposited to a certain height, the upper pneumatic valve 223 is closed, the lower pneumatic valve 224 is opened, so that the heavy solid slag and a small amount of slurry in the slag discharging passage 222 are sent to the inlet of the second spiral conveying device 230, and meanwhile, washing water is injected into the second spiral conveying device through the water injection pipe 225; the second screw conveyor 230 then screws the heavy solid slag upward to discharge it through a slag discharge opening 232. In one preferred embodiment, the water injection pipe 225 is disposed obliquely on the tapping channel 222 so as to have an angle of less than 90 degrees with the axis of the tapping channel 222, and a control valve is further disposed on the water injection pipe 225. Through the arrangement mode, water can have certain oblique downward impact force when the water injection pipe is filled with water, so that the blockage of the feeding end of the second spiral conveying device is further guaranteed.

Referring to fig. 9, as a further embodiment of the present invention, the crushing, humidifying and pulping system comprises a front crushing and humidifying machine A, B and a rear crushing and humidifying machine A, B; the feeding port 226 of the front-stage crushing and humidifying machine A is arranged at the top of the tank body and is connected with the first screw conveying device 170, the feeding port 226 of the rear-stage crushing and humidifying machine B is arranged on the side wall of the tank body and is communicated with the slurry outlet 227 of the front-stage crushing and humidifying machine A through a conveying pipe, the slurry outlets 227 of the front-stage crushing and humidifying machine A and the rear-stage crushing and humidifying machine B are both arranged on the side wall of the tank body, and the position of the slurry outlet 227 of the rear-stage crushing and humidifying machine B on the tank body is equal to or lower than the position of the feeding port of the.

According to the scheme, through the series connection structure formed between the front and rear two-stage crushing and humidifying machines, the problem of precipitation and separation of heavy and uncomfortable fermentation substances in the roughly-separated kitchen waste is thoroughly solved, sufficient preparation is made for a subsequent kitchen waste treatment process, and the kitchen waste slurry is conveyed between the two-stage humidifying machines in a side wall overflow mode. The front-stage kitchen waste crushing and humidifying machine and the rear-stage kitchen waste crushing and humidifying machine are communicated through the conveying pipe, so that waste slurry treated by the front-stage kitchen waste crushing and humidifying machine can be sent into the rear-stage kitchen waste crushing and humidifying machine in a side wall overflow mode to be subjected to secondary crushing, pulping and precipitation treatment, and the investment of equipment is reduced. So that heavy solid residues in the kitchen waste after coarse material separation are thoroughly discharged, the damage to subsequent treatment equipment is reduced, and the treatment effect is improved.

The second screw conveyer 230 is provided with a filtrate outlet 233 at the lower part of the feed end thereof, and a filtrate collecting tank 240 is arranged below the filtrate outlet 233. In the present invention, the filtrate collecting tank 240 is designed to receive the slurry and water discharged from the filtrate discharge port 233 of the second screw conveyor 230, considering that a small amount of slurry is discharged from the tank along with the heavy solid slag, and it is necessary to inject a certain amount of water when the heavy solid slag is fed to the second screw conveyor 230. Under another kind of circumstances can also, because the jar body of preceding, back-end crushing damping machine all adopts the mode of lateral wall overflow discharge to carry out the transport of thick liquid, under this condition, when heavy solid sediment was selected separately to a certain extent, if need empty the internal rubbish thick liquid of jar, that also can be through the mode of opening upper and lower pneumatic valve simultaneously, make the interior rubbish thick liquid of jar send into the filtrating collecting pit and keep in.

Further, the filtrate collecting tank 240 is connected to the top of the tank body through a filtrate recovery pipeline 241, and a reflux pump 242 is arranged on the filtrate recovery pipeline 241. Namely, under the condition that the emptying of the tank body garbage slurry is not considered, the diluted garbage slurry in the filtrate collecting tank can flow back to the tank body through a pipeline, so that the pollution of organic matters in the slurry to the environment is reduced, and meanwhile, the utilization of organic matters in the kitchen garbage can be improved. The top of the tank body is provided with a water inlet, the water inlet is connected with a water inlet pipe 228, and the water inlet pipe 228 is provided with a water valve 229 for opening and closing the water inlet pipe. When the concentration of the kitchen waste in the tank body is too high, the water valve is opened, so that water enters the tank body, the concentration of the kitchen waste in the tank body is adjusted, and the subsequent treatment is facilitated.

Referring to fig. 9, in order to crush and pulp the kitchen waste and accelerate the settling speed of heavy solid slag, a stirring and separating mechanism 250 is disposed on the tank 220 to stir the kitchen waste in the tank. The stirring and separating mechanism 250 is designed in such a manner that the loss is small and the service life is long, compared with a manner in which the stirring head is suspended by a motor. The arrangement of the stirring mechanism can be in many ways and the invention will not be described in detail.

In order to enable the mechanisms of all the stages to work coordinately, corresponding control units are also arranged. The control unit can control the opening and closing of the valve, can control the stirring speed of the stirring and separating mechanism, and can also control the operation opening and closing of the second spiral conveying device. When the kitchen waste is placed in the tank body, the stirring and separating mechanism can be controlled to stir at a slower speed, in this period of time, as the density of hard and heavy foreign matters (spoons and the like) is higher, the gravity borne by the stirring and separating mechanism in unit volume is much larger than the buoyancy, the kitchen waste can be automatically deposited at the tank body part at the fastest speed, and as the stirring and separating mechanism rotates at a lower speed, the probability of collision between the stirrer and the hard foreign matters is reduced, and even if the kitchen waste collides, the stress cannot be large, so that the stirrer is effectively prevented from being damaged due to the collision with the hard foreign matters; when the stirring head rotates for a period of time at a low speed, foreign matters are basically deposited at the moment, and then the stirring separation mechanism is controlled to rotate at a high speed, so that the bridging phenomenon can be prevented. Meanwhile, the stirring and separating mechanism rotating at a high speed enables the fragile solid residues of the kitchen waste to be crushed to form slurry in a rotational flow state, and the slurry can be discharged through a slurry outlet on the side face of the tank body in an overflowing manner under the rotational flow effect.

The working principle of the prior-stage crushing and humidifying machine A is described as follows: the kitchen waste sorted by the coarse material sorter is sent into the tank 220 through the first spiral conveying device 170, the stirring and separating mechanism 250 is started, heavy solid residues of the kitchen waste are accumulated and precipitated at a precipitate discharge port 221 at the bottom of the tank, and at the moment, the upper pneumatic valve 223 and the lower pneumatic valve 224 are controlled to be in a closed state; after heavy solid slag in the tank body is precipitated, the upper pneumatic valve 223 is opened, the lower pneumatic valve 224 is kept still, and the heavy solid slag and a small amount of slurry enter the slag discharging channel 222 for temporary storage; when the heavy solid slag and the slurry in the slag discharging passage 222 are full, the upper pneumatic valve 223 is closed, the lower pneumatic valve 224 and the control valve on the water injection pipe 225 are opened, so that the heavy solid slag is fed into the feeding end 231 of the second spiral output device 230 along with the water, and meanwhile, the second spiral conveying device 230 is started; the second screw conveyor 230 discharges heavy solid slag from a high slag discharge port 232, and discharges diluted slurry from a low filtrate discharge port 233 into a filtrate collection tank 240. Optionally, the return pump 242 may be activated to return the liquid in the filtrate collection tank 240 to the tank 220 via the filtrate recovery line 241.

In summary, the working principle of the crushing, humidifying and pulping system 200 of the present invention is as follows:

step1, receiving the kitchen waste sorted by the coarse material sorting machine through a top feeding hole of a preceding stage crushing and humidifying machine, and controlling the stirring speed of the stirring and separating mechanism to be slow firstly and then fast in the stage humidifying machine: slowly precipitating heavy solid slag in the garbage at a sediment outlet at the bottom of the tank body, and then opening an upper pneumatic valve to temporarily store the heavy solid slag in a slag outlet channel (the subsequent steps are the same as the principle); crushing and pulping the kitchen waste by using the stirring head at a high speed, so that slurry in rotational flow is formed in the tank body, and the kitchen waste slurry overflows from a slurry outlet on the side wall under the rotational flow effect and is conveyed into a rear-stage crushing and humidifying machine through a conveying pipe;

step2, when the slurry of the garbage crushed and precipitated by the front-stage humidity regulator enters the rear-stage humidity regulator, the front-stage humidity regulator already separates and precipitates the heavy foreign matters in the garbage once, so that in the rear-stage crushing humidity regulator, the speed of the stirring and separating mechanism can be increased, and the non-crushed substances in the garbage can be quickly formed into slurry. Of course, a small part of heavy solid slag which is not separated by the front-stage moisture regulator is precipitated at a sediment outlet at the bottom of the heavy solid slag, so that the kitchen waste can be stirred and pulped and simultaneously the slag can be discharged again. The water injection pipe on the slag discharging channel of the rear-stage crushing and humidity regulating machine can reduce the water injection amount and can not inject water.

For the lightweight foreign matter sorting system 300 in fig. 4, a detailed schematic view is provided with reference to fig. 10-12. The light foreign matter sorting system is mainly used for sorting light foreign matters in kitchen waste raw materials, such as fermentation discomfort matters of plastic bags, bamboo wood, small foams and the like.

As shown in fig. 10, the light foreign matter sorting system according to the present invention mainly includes a light foreign matter sorter 310. The light foreign matter separator 310 includes:

a casing 320 having two ends each provided with a through hole and a filtrate outlet 321 at the bottom;

a filter cartridge 330 transversely penetrating between the two through holes of the housing 320 and having a neck portion 330a, 330b from which the two through holes extend, the filter cartridge 330 being rotatably disposed with respect to the housing 320;

a screw conveyor 340, which includes a decelerating motor 341, a rotating shaft 342 driven by the decelerating motor 341, and a screw blade 343 fixed on the outer circumference of the rotating shaft 342 and distributed along the axial direction of the rotating shaft 342, wherein the decelerating motor 341 is disposed outside one end neck 330b of the filter cartridge 330, the rotating shaft 342 extends directly from the end neck of the filter cartridge 330, a gap is formed between the edge of the screw blade 343 and the wall of the filter cartridge 330, and the screw blade 343 from the decelerating motor 341 to the end neck 330b of the filter cartridge 330 is covered in a sleeve 350, and a slag outlet 351 is disposed below the sleeve 350; wherein, the other end neck part 330a of the filter cartridge 330 extends into the feeding pipe 322 connected with the slurry outlet 227 of the rear stage crushing moisture control machine B, and the rotation direction of the filter cartridge 330 is opposite to the rotation direction of the helical blade 343.

the scheme has the advantages that firstly, the fixed arrangement between the filter cylinder ② the machine shell is changed into the rotating arrangement (namely the rotating arrangement), so that impurity-containing slurry from the kitchen waste crushing ② humidity regulating machine can be centrifugally filtered in the filter cylinder, the slurry is quickly filtered out from a filtrate outlet below the machine shell from holes of the filter cylinder ② flows into the fine sand sorting system 400, so that light foreign matters in the slurry are quickly screened in the filter cylinder, secondly, the spiral conveying device is arranged in the filter cylinder, the rotating direction of the spiral conveying device is controlled to be opposite to the rotating direction of the filter cylinder, so that when the filter cylinder is used for centrifugally sorting the light foreign matters in the forward direction, the spiral blades reversely scrape the light foreign matters ② smoothly discharge the light foreign matters from a slag outlet, so that the discharging efficiency of the light foreign matters is improved.

In a further embodiment of the present invention, the filter cartridge 330 is rotatably disposed with respect to the housing 320 in a manner that: the casing 320 is provided with a set of rotating assemblies 360 respectively through a support plate 323 below the necks at the two ends of the filter cartridge 330, each set of rotating assemblies 360 comprises two rotating members, the two rotating members (not shown) below the neck at one end 330b of the filter cartridge 330 are symmetrically distributed at the lower left corner and the lower right corner of the filter cartridge 330 and are supported on the same circumference of the filter cartridge 330, the two rotating members 361 and 362 below the neck at the other end 330a of the filter cartridge 330 are distributed at the lower left corner and the lower right corner of the filter cartridge 330 and are supported on different circumferences of the filter cartridge 330, and the two sets of rotating assemblies 360 support the necks at the two ends of the filter cartridge 330 so that the walls of the filter cartridge 330 are not in contact with the; the filter cartridge 330 has a slave gear 363 fixed to the outer circumference of the other end neck portion 330a, and one of the rotation members 362 under the end neck portion is provided as a master gear, the master gear is engaged with the slave gear 363, and a gear shaft of the master gear is connected to a driving motor 380 through a transmission mechanism 370.

As shown in fig. 12, the transmission mechanism 370 includes two bearings 371, two bearing seats 372, and a set of bevel gear pairs 373, the gear shaft of the main gear passes through the two bearings in turn and then is connected to the central hole of one of the bevel gears, and the central hole of the other bevel gear is inserted by the output shaft of the driving motor 380.

In fig. 10, the driven gear 363, the main gear 362 and the driving motor 380 are all arranged at the left end of the filter cartridge 330, and the decelerating motor 341 and the sleeve 350 are all arranged at the right end of the filter cartridge 330, so that the rotating shaft extends into the filter cartridge 330 from the right end of the filter cartridge. The sleeve 350 is configured such that a portion of the sleeve 350 extends into the neck of the filter cartridge 330, and the sleeve has a smaller diameter than the filter cartridge.

According to the invention, the filter cartridge is rotatably supported by the two groups of rotating assemblies arranged on the shell, so that the reliable rotation of the filter cartridge is ensured, the mode that a bearing is required to be arranged in a through hole of the shell is avoided, and the service life of equipment can be effectively prolonged. Wherein, the support of two sets of rotating assembly to cartridge filter both sides neck makes cartridge filter section of thick bamboo wall and casing perforation between contactless, keeps not influencing the rotatory tiny clearance of cartridge filter, and can not cause a large amount of leakages of kitchen garbage thick liquids. In a preferred embodiment of the invention, a ring of bristles (not shown) can be placed on the wall of the perforated casing bore, which bristles either do not interfere with the rotation of the cartridge or provide some resistance to slurry flow.

For the installation of the master gear, a support can be arranged on the machine shell, and the master gear shaft is rotatably arranged in the support. When the driving motor 380 drives the filter cartridge 330 to rotate in the forward direction, the decelerating motor 341 drives the helical blade 343 to rotate in the reverse direction; on the contrary, when the driving motor 380 drives the filter cartridge 330 to rotate reversely, the decelerating motor 341 drives the helical blade 343 to rotate forward. In this way, the slag discharge of the light foreign matters is realized. Of course, the other rotating member arranged below the neck of the filter cartridge on the side of the gear can also be arranged in the form of a gear, which ensures that the two rotating members on this side can also be arranged symmetrically in front and rear with respect to the filter cartridge.

In the above solution, the other rotating members in the two sets of rotating assemblies 360, i.e. the other rotating members except the main gear, are all rolling wheels or rolling bearings disposed on the housing through the bearing, see fig. 11. Other components that may rotatably support the filter cartridge are also possible.

In order to facilitate the installation of the filter cartridge 330 from the gear 363 and the support of each rotating member, the outer peripheries of the neck parts at both ends of the filter cartridge are wrapped by annular shielding sheets in the present invention. Then, the installation of the filter cartridge from the gear and the rotational support of the filter cartridge by the roller or the rolling bearing are performed on the outer periphery of the annular shielding sheet. On this basis, also can also set up round or many rings of pappus brush on the sleeve periphery and on the periphery of inlet pipe, neither influence the rotation of cartridge filter, can also reach the purpose that prevents the thick liquid blowout. It can be seen from fig. 10 that the neck portions of the ends of the filter cartridge 22 are free of filter holes.

Since the screw conveyor 340 may contain liquid when discharging the light foreign matters, the light foreign matter sorting system of the present invention further includes a foreign matter squeezing dehydrator 390, wherein the foreign matter squeezing dehydrator 390 is disposed below the light foreign matter sorting machine 310, and a feeding end 391 of the foreign matter squeezing dehydrator 390 is communicated with the slag outlet 351. The discharged light foreign matters are dehydrated by the foreign matter press-dehydrator 390 and discharged from the other end of the apparatus after dehydration, see fig. 10. The foreign matter squeezing dehydrator 390 employs a general screw squeezing dehydrator. Through carrying out the extrusion dehydration to the fermentation discomfort thing of selecting separately, can effectively avoid the waste water drippage phenomenon of material in the transit, the dehydration filtrating can carry out recycle, reduces organic substance's loss.

In summary, the working principle of the light foreign matter sorting system 300 of the present invention is as follows:

the feeding pipe 322 receives the impurity-containing slurry of the rear-stage crushing and humidifying machine B and feeds the impurity-containing slurry into the filter cartridge 330; the driving motor 380 is controlled to drive the main gear to rotate, the filter cartridge 330 rotates through gear engagement, at the moment, the kitchen waste slurry entering the filter cartridge forms rotational flow along with the rotating filter cartridge, the slurry smaller than the filter holes is immediately thrown out of the filter cartridge and enters the machine shell 320, the slurry is discharged from a filtrate outlet 321 below the machine shell 320 under the action of gravity and is sent to a fine sand sorting system, and light foreign matters larger than the filter holes are screened out by the filter cartridge 330; meanwhile, the reduction motor 341 is controlled to rotate the helical blade 343 in the reverse direction, and at this time, the helical blade 343 discharges fermentation unsuitable materials such as plastic bags, bamboo wood and the like screened by the filter cartridge from the slag outlet 351 and drops into the foreign matter squeezing dehydrator 390 to perform dehydration treatment. The squeezed filtrate is reversely sent to a crushing and humidifying machine system for treatment, and the dehydrated light foreign matters are sent to a draw arm type garbage can by a conveyor and sent out of the field. The system can effectively remove the foam, plastic and bamboo light foreign matters which cause scum and crusting in the fermentation tank.

For the fine sand classification system 400 of fig. 4, reference is made to fig. 13-16 for a detailed schematic view. The fine sand sorting system is mainly used for sorting fine sand and eggshell discomfortable fermentation substances in the kitchen waste raw materials.

As shown in fig. 13, the fine sand classification system of the present invention mainly uses a cyclone sand separator 410. Cyclone desander 410 includes cyclone desanding cylinder 420, cyclone desanding cylinder 420's upper portion is a cylindricality section of thick bamboo 421, and the lower part is a toper section of thick bamboo 422, be provided with cyclone feed inlet 423 on the lateral wall of cylindricality section of thick bamboo 421, cyclone feed inlet 423 intercommunication light foreign matter sorter's filtrate export 321, the top intercommunication of cylindricality section of thick bamboo 421 has cyclone discharge gate 424, cyclone discharge gate 424 constitutes the final thick liquid delivery outlet of kitchen garbage level four sorting edulcoration system.

The invention adopts a rotational flow desanding mode to sort fine sand substances such as sand grains, eggshells and the like in kitchen waste, and utilizes the principle that after materials enter the rotational flow desander from an inlet of the rotational flow desander along the tangential direction at a certain pressure and flow speed, the materials are strongly rotated under the influence of the structure of the rotational flow desander. Compared with the advection sand removing mode, the sand removing mode can not be influenced by the fluctuation of feeding basically, namely the problems of incomplete settlement and the like caused by too high feeding speed can not occur.

Since the cyclone sand removal cylinder is used for sorting the kitchen waste slurry which contains a large amount of grease and other organic matters, when the slurry overflows from the top of the sand remover, a large amount of residues are adhered to the inner wall of the sand remover, and the residues may be fine sand substances which do not fall down or waste slurry which does not overflow. If not cleaned regularly, not only are they prone to decay, spoilage and odor, but over time they can also lead to the formation of a hard-to-remove layer of nodules within the desander that can interfere with the operation of the equipment. Therefore, the invention is designed as follows:

referring to fig. 14-15, a cone 430 with a downward conical tip is fixed on the inner side surface of the top of the cylindrical barrel 421, the cone 430 is hollow, a plurality of circles of water spraying holes 431 are arranged on the cone surface at equal intervals, each water spraying hole 431 of the plurality of circles of water spraying holes 431 is provided with a nozzle 432, the nozzle 432 is connected with a water spraying branch pipe 433, all the water spraying branch pipes 433 are communicated with a water spraying main pipe 434, the water spraying main pipe 434 penetrates from the top of the cylindrical barrel 421 to the inner cavity of the cone 430 directly and is fixedly connected with the top of the cylindrical barrel 421, and the water spraying main pipe 434 is connected to a water supply source through a water pump 435; the cone 430 is further provided with an outer liner 436, the outer liner 436 covers the outside of the cone 430, a plurality of circles of perforations 437 are formed in the surface of the outer liner 436, and the outer liner 436 is arranged in a manner of rotating relative to the cone 430, so that when the perforations 437 correspond to the water spray holes 431 one by one, the water spray holes 431 are opened, and when the perforations 437 and the water spray holes 431 are staggered with each other, the water spray holes 431 are closed; a rotational flow cavity is formed between the outer lining 436 and the inner wall of the rotational flow desanding cylinder 420.

In the above scheme, firstly, the conical body 430 with the downward conical tip is arranged in the cylindrical barrel, and the outer liner 436 is arranged outside the conical body, so that kitchen waste slurry entering from the tangential direction of the cylindrical barrel can generate rotational flow under the action of centrifugal force in the conical cavity between the outer liner of the conical body and the inner wall of the rotational flow desanding barrel 420, and sand grains, eggshells and the like in the slurry can settle to the bottom conical barrel 422 along the inner wall of the rotational flow desanding barrel. Secondly, the key point of the invention is that: the cone 430 is hollow, a water spray hole 431 is arranged on the conical surface, then a nozzle 432 communicated with a water pipe is arranged at the water spray hole 431, a perforation 437 corresponding to the water spray hole is arranged on the facing surface of the cone outer liner 436, and the outer liner can rotate relative to the cone to open and close the water spray hole 431, in such a way that: when the rotational flow desanding cylinder desands the kitchen waste slurry, the water spraying hole is not opened, and the water pump does not supply water; when the cyclone sand removal cylinder is cleaned regularly, the water spraying holes are opened, the water pump works to clean the cylinder wall, and peculiar smell generated by substances adhered to the cylinder wall is effectively prevented.

Among them, the specific preferred embodiment of "the outer lining is provided in a manner of rotating with respect to the cone" is: as shown in fig. 16 and referring to fig. 14, the upper end of the outer liner 436 passes through the top of the cylindrical barrel 421 and is provided with a flange 438, and is rotatably arranged on a seat ring 425 at the top of the cylindrical barrel 421 through the flange 438, and the seat ring 425 is fixedly connected with the top of the cylindrical barrel 421; a rotating part 439 extends horizontally outwards from one side of the flange 438, a semi-closed retaining ring 426 is arranged on the periphery of the seat ring 425 at the top of the cylindrical barrel 421, and the rotating part 439 rotates between the dividing positions of the retaining ring 426.

In the scheme, the outer liner rotates relative to the conical body in a mode of arranging the flange at the upper end of the outer liner and arranging the seat ring at the top of the cylindrical barrel. In order to make the flange of the outer liner convenient to operate, a rotating part extends outwards from one side of the flange of the outer liner, and the outer liner is rotated by the rotating part. As shown in fig. 16, the two ends of the broken portion of the retaining ring 426 form a stopper for the rotation of the outer liner flange 438: when the rotating part 439 rotates to one end of the retainer ring 426, the outer liner perforation 437 corresponds to the water jet hole 431, the water jet hole 431 is in an open state, and the device is in a cleaning mode; conversely, when the rotating portion 439 rotates to the other end of the retainer 426, the outer liner perforation 437 does not correspond to the spout 431, the spout 431 is in a blocking state (i.e., closed state), and the device is in a normal operation mode. In order to realize the automatic operation of the whole device, the rotating part 439 can be connected to a cylinder 439-1, and the rotating part can be pushed and pulled through the reciprocating motion of the cylinder.

The invention further adopts the following extension scheme: referring to fig. 13, the fine sand sorting system further includes a sand discharge tube 440, the sand discharge tube 440 is located below the cyclone sand removal tube 420 and is communicated with the conical tube 422, a sand inlet valve 441 is disposed between the upper portion of the sand discharge tube 440 and the conical tube 422, and a sand outlet valve 442 is disposed at the lower portion of the sand discharge tube 440. Here, the sand discharging cylinder 440 serves to temporarily store the centrifugally settled gravel and eggshell impurities. When the sand discharging device is used, the sand inlet valve 441 is opened, the sand outlet valve 442 is closed, and gravel and eggshell impurities with high density sink into the sand discharging cylinder 440 along the conical cylinder wall; when the sundries in the sand discharge cylinder 440 reach a certain height, the sand inlet valve 441 is closed, and the sand outlet valve 442 is opened to discharge sand. And the invention adopts the spiral sand discharging machine 450 to realize sand discharging. The feed end 451 of the spiral sand discharger 450 is connected to the sand outlet valve 442, a filtrate discharge port is arranged below the feed end 451, and the slag outlet 452 of the spiral sand discharger 450 is higher than the feed end 451, namely, a spiral is formed. A filtrate collecting tank 453 is also provided below the filtrate discharge port. In a further implementation, the liquid in the filtrate collection tank can be re-injected into the cyclone sand removal cylinder 420, so that the loss of organic matters is reduced.

In summary, the working principle of the fine sand sorting system 400 of the present invention is as follows:

and (3) a normal operation mode: the kitchen waste serous fluid treated by the light foreign matter sorting system enters the rotational flow sand removing cylinder 420 from the feed inlet 423 through the filtrate outlet 321, and generates strong rotation in a conical cavity between the inner wall of the cylinder and an outer liner, because the serous fluid has different densities with gravel and eggshell impurities, under the combined action of buoyancy, centripetal force and fluid drag force, the serous fluid with small density rises and flows out from the top discharge port 424, sand grains, eggshells and the like with large densities sink to the bottom along the inner wall of the sand removing cylinder and are discharged by the sand discharging cylinder 440, and then the impurities are discharged through the spiral sand discharging machine 450, thereby completing sand removing. During desanding, the outer liner 436 closes the blowholes 431.

A sand removal cylinder cleaning mode: rotating the outer liner flange 438 to the other end of the retainer ring 426 to cause the perforations 437 in the outer liner 436 to correspond with the orifices 431 in the cone 430, thereby opening the orifices 431; and then the water pump 435 is started to enable the water spraying branch pipe 433 to spray water to the inner wall of the sand removing cylinder through the nozzle 432, so that the inner wall of the cyclone sand removing cylinder is cleaned. The cleaning solution may be delivered to the screw conveyor through the sand discharge 440, the remaining gravel and egg shells are removed by the screw conveyor 450, and the solution is discharged from the filtrate discharge port into the filtrate collection basin 453.

The fine sand sorting system can effectively remove the fine sand heavy foreign matters which cause the sediment in the fermentation tank, and the slurry suitable for fermentation enters the relay tank and is pumped into the dissolving tank after being heated, extracted with oil and cooled. Meanwhile, the cyclone sand removal cylinder can be cleaned, so that peculiar smell is prevented.

The above description of the present invention provides a description of the structure and operation of each subsystem in a four-stage sorting system. For the four-stage sorting and impurity removing system for the kitchen waste, the working principle is briefly described as follows:

a spiral conveyor at the bottom of a receiving tank in the receiving system preliminarily decomposes the kitchen waste raw materials and then sends the kitchen waste raw materials into a bag breaking machine, and after the operation of the bag breaking machine, the kitchen waste raw materials are sent into a four-stage sorting system under the action of gravity. Namely, kitchen waste raw materials sequentially enter a coarse material sorting system 100, a crushing, humidifying and pulping system 200, a light foreign material sorting system 300 and a fine sand sorting system 400 to perform one-step foreign material sorting, the finally sorted kitchen waste slurry is slurry suitable for fermentation, and the slurry directly enters a relay tank and then enters a subsequent process.

The receiving tank may be washed by adding hot water. The washing water is hot water heated by the heat exchanger and is mixed with the materials in the receiving tank, so that solid grease in the kitchen waste is melted and enters the grease extraction system along with filtered water, and the requirement of extracting the grease to the maximum extent is met. The odor and peculiar smell generated by the receiving groove are led out from the air suction opening at the upper part of the receiving groove for deodorization treatment.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a kitchen garbage level four is selected separately edulcoration system, includes thick thing sorting system, broken humidifying slurrying system, light foreign matter sorting system and the fine sand type sorting system that sets gradually according to kitchen garbage sorting flow direction, its characterized in that, thick thing sorting system includes thick thing sorter, thick thing sorter includes:

the rotating shafts are installed in one-to-one correspondence with the multiple groups of bearing seats, each rotating shaft is sleeved with a plurality of triangular disc groups, two adjacent triangular disc groups are separated by a cushion block, each cushion block enables a space to be formed between two adjacent triangular disc groups, the triangular disc groups on the two adjacent rotating shafts are arranged in a staggered mode, the triangular disc groups on the rotating shafts can be respectively embedded into the space between the triangular disc groups close to the rotating shafts, gaps are reserved, each triangular disc group comprises at least one positive triangular disc, three sides of the positive triangular discs are respectively provided with arc-shaped sides protruding outwards, and the ends of the two adjacent arc-shaped sides are connected to form sharp corners protruding outwards; the driving mechanism is used for driving the rotating shafts to overturn the kitchen waste in the same direction;

a garbage transfer groove is arranged below the rack, a garbage output port is arranged on the garbage transfer groove, and a first spiral conveying device is arranged below the garbage output port;

the crushing, humidifying and pulping system comprises a front crushing and humidifying machine and a rear crushing and humidifying machine, wherein each stage of crushing and humidifying machine comprises a tank body; the feed inlet of the front-stage crushing and humidifying machine is arranged at the top of the tank body and connected with the first screw conveying device, the feed inlet of the rear-stage crushing and humidifying machine is arranged on the side wall of the tank body and communicated with the slurry outlet of the front-stage crushing and humidifying machine through a conveying pipe, and the slurry outlets of the front-stage crushing and humidifying machine and the rear-stage crushing and humidifying machine are arranged on the side wall of the tank body.

2. The kitchen waste four-stage sorting and impurity removing system according to claim 1, wherein the coarse material sorting machine further comprises a bag breaking machine, the bag breaking machine is arranged at the upper part of one end of the rack and is provided with a waste feeding hole and a waste discharging hole, the waste feeding hole faces upwards to receive kitchen waste to be processed, and the waste discharging hole faces downwards to be aligned with a triangular disc group on the rotating shaft at the end of the rack so as to feed the kitchen waste into the coarse material sorting machine.

3. The kitchen waste four-stage sorting and impurity removing system according to claim 2, wherein the waste output port is arranged at one end of the waste transfer groove close to the bag breaking machine.

4. The kitchen waste four-stage sorting and impurity removing system according to claim 3, wherein in the crushing, humidifying and pulping system, a sediment discharge port is arranged at the bottom of the tank body of each stage of the crushing and humidifying machine, the sediment discharge port is connected to one end of a slag discharging channel, and the slag discharging channel has a certain height; and each stage of the crushing and humidifying machine further comprises:

the second spiral conveying device is obliquely arranged below the tank body, and the feeding end is connected to the other end of the slag discharging channel so as to receive the heavy sediments temporarily stored in the slag discharging channel; wherein, the position of slagging tap passageway bottom being close to jar body is provided with pneumatic valve, is provided with down pneumatic valve in the position that is close to second screw conveyor to reserve one section passageway of slagging tap between lower pneumatic valve and second screw conveyor's the feed end, be connected with the water injection pipe on this section passageway of slagging tap.

5. The four-stage sorting and impurity-removing system for the kitchen waste as claimed in claim 4, wherein a slurry outlet of the rear-stage crushing and humidifying machine is positioned on the tank body at a position equal to or lower than a self feed inlet and is connected to the light foreign matter sorting system.

6. The kitchen waste four-stage sorting and impurity removing system according to claim 5, wherein the light foreign matter sorting system comprises a light foreign matter sorting machine, and the light foreign matter sorting machine comprises:

the two ends of the machine shell are respectively provided with a perforation, and the bottom of the machine shell is provided with a filtrate outlet;

a filter cartridge transversely penetrating between the two through holes of the casing and having a neck portion from which the two through holes extend, the filter cartridge being rotatably disposed with respect to the casing;

the spiral conveyor comprises a speed reducing motor, a rotating shaft driven by the speed reducing motor and spiral blades which are fixed on the periphery of the rotating shaft and distributed along the axial direction of the rotating shaft, wherein the speed reducing motor is arranged on the outer side of the neck part at one end of the filter cartridge; wherein, the other end neck of cartridge filter stretches into the inlet pipe that has connected the broken damping machine thick liquid discharge port of back level, and the rotation direction of cartridge filter is opposite with helical blade's direction of rotation.

7. The four-stage sorting and impurity removing system for kitchen waste as claimed in claim 6, wherein the filter cartridge is rotatably arranged relative to the housing in a manner that:

the shell is provided with a group of rotating assemblies respectively below necks at two ends of the filter cylinder through a support plate, each group of rotating assemblies comprises two rotating components, the two rotating components below one neck of the filter cylinder are symmetrically distributed at the lower left corner and the lower right corner of the filter cylinder and supported on the same circumference of the filter cylinder, the two rotating components below the other neck of the filter cylinder are distributed at the lower left corner and the lower right corner of the filter cylinder and supported on different circumferences of the filter cylinder, and the necks at two ends of the filter cylinder are supported by the two groups of rotating assemblies so that the cylinder wall of the filter cylinder is not contacted with the through hole of the shell;

the filter cartridge is fixed with a slave gear on the periphery of the other end neck part, one rotating component below the end neck part is set as a master gear, the master gear is meshed with the slave gear, and a gear shaft of the master gear is connected to a driving motor through a transmission mechanism.

8. The kitchen waste four-stage sorting and impurity removing system according to claim 7, wherein the fine sand sorting system comprises a cyclone sand remover; wherein,

the cyclone desander comprises a cyclone desanding cylinder, the upper part of the cyclone desanding cylinder is a cylindrical cylinder, the lower part of the cyclone desanding cylinder is a conical cylinder, a cyclone feed port is arranged on the side wall of the cylindrical cylinder, the cyclone feed port is communicated with a filtrate outlet of the light foreign matter separator, the top of the cylindrical cylinder is communicated with a cyclone discharge port, and the cyclone discharge port forms a final slurry outlet of a kitchen waste four-stage sorting and impurity removing system.

9. The four-stage sorting and impurity removing system for the kitchen waste as claimed in claim 8, wherein a conical body with a downward conical tip is fixed on the inner side surface of the top of the cylindrical barrel, the conical body is hollow, a plurality of circles of water spraying holes are arranged on the conical surface at equal intervals, each water spraying hole in the plurality of circles of water spraying holes is provided with a nozzle, the nozzle is connected with a water spraying branch pipe, all the water spraying branch pipes are communicated to a water spraying main pipe, the water spraying main pipe penetrates into the inner cavity of the conical body from the top of the cylindrical barrel directly and is fixedly connected with the top of the cylindrical barrel, and the water spraying main pipe is connected to a water supply source through a water pump; the cone body is also provided with an outer lining, the outer lining covers the outer side of the cone body, a plurality of circles of through holes are formed in the lining surface, and the outer lining is arranged in a rotating mode relative to the cone body, so that the water spray holes are opened when the through holes correspond to the water spray holes one by one, and the water spray holes are closed when the through holes and the water spray holes are staggered with each other; and a rotational flow cavity is formed between the outer lining and the inner wall of the rotational flow sand removal cylinder.

10. The four-stage sorting and impurity removing system for the kitchen waste as claimed in claim 9, wherein a flange is arranged at the upper end of the outer liner after passing through the top of the cylindrical barrel, and the outer liner is rotatably arranged on a seat ring positioned at the top of the cylindrical barrel through the flange, and the seat ring is fixedly connected with the top of the cylindrical barrel; one side of the flange extends outwards horizontally to form a rotating part, a semi-closed check ring is arranged on the periphery of the seat ring at the top of the cylindrical barrel, and the rotating part rotates between the broken parts of the check ring.