CN214891199U - A charge-in system for waste incineration preliminary treatment - Google Patents

Abstract

The utility model discloses a feeding system and a feeding method for waste incineration pretreatment, the feeding method is carried out aiming at the feeding system, the feeding system for waste incineration pretreatment comprises a collecting mechanism, a primary crushing mechanism, a secondary crushing mechanism, a screw conveyor and an incinerator pusher hopper which are connected in sequence, the collecting mechanism is used for collecting waste, the primary crushing mechanism and the secondary crushing mechanism are used for crushing the waste, the screw conveyor is used for conveying the crushed waste into the incinerator pusher hopper, the incinerator pusher hopper is arranged below the incinerator pusher hopper, the feeding system eliminates the adverse effect of a pumping structure on waste incineration pretreatment, and adopts a twice crushing mode to further improve the combustion effect after waste crushing, so that the combustion is more complete.

Description

A charge-in system for waste incineration preliminary treatment

Technical Field

The utility model relates to a rubbish pretreatment systems, in particular to a charge-in system for waste incineration pretreatment.

Background

According to different sources and properties, the wastes are mainly classified into domestic wastes, industrial wastes, dangerous wastes, various waste liquids and the like, the incineration is one of the methods for treating the wastes, and the wastes need to be treated before the incineration, so that the safety of the incineration process and the low pollution emission are ensured.

CN105485695B discloses a feeding system and method for waste incineration pretreatment, the process treatment flow is as follows: waste conveying-sealed cabin nitrogen protection-waste crushing under nitrogen protection-mixer mixing waste-plunger pump pumping material to incineration device; the main equipment comprises a conveyor, a lifter, a sealed cabin, a sealed gate, a shear type crusher, a feeder, a mixer, a screw conveyor and a plunger pump; the auxiliary system comprises a nitrogen charging system, an explosion-proof system, a fire-proof system and a monitoring system. In practical application, the above patent has defects in the pumping link, the pumping has strict requirements on the solid-liquid ratio of the waste, and the project practice shows that the pump is suitable for high-pressure pumping when the liquid is about 30-40%, otherwise, the material is easy to block in the high-pressure pumping link, and the high-pressure pipeline of the pumping device is difficult to maintain, and the maintenance cost is high. At present, in order to solve the problem of solid-to-liquid ratio of waste, a user using the system has to actively add liquid for mixing and stirring to enable the treated waste to meet pumping conditions, but the method is not only troublesome, but also can cause unstable heat value of the treated waste to generate adverse effect on the incineration effect of the waste, and meanwhile, the waste can be compacted after being pumped by a long pipeline under high pressure to further influence the combustion effect of the waste.

In conclusion, the feeding system of the incineration device adopting the pumping equipment at present has the defects of higher use cost, low material adaptability, lower system efficiency and undesirable combustion effect of the pretreated waste.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a charge-in system for waste incineration preliminary treatment can guarantee to have good combustion effect after the discarded object is broken.

According to the utility model discloses a feed system for waste incineration preliminary treatment, including the collection mechanism, a crushing mechanism, secondary crushing mechanism, screw conveyer and burn burning furnace pusher hopper that connect gradually, the collection mechanism is used for collecting the discarded object, a crushing mechanism with secondary crushing mechanism is used for the breakage the discarded object, screw conveyer is used for with broken the discarded object carry extremely burn among the burning furnace pusher hopper, the below of burning furnace pusher hopper is provided with burns burning furnace pusher, it sets up to burn vertical or slope of burning furnace pusher hopper, be used for through discarded object self gravity will the discarded object is sent into burn among the burning furnace pusher.

According to the utility model discloses an embodiment has following technological effect at least:

compared with the prior art, the system cancels a pumping structure, utilizes the self gravity of the waste to convey the waste to the incinerator pusher, thereby eliminating the adverse effects of the pumping structure on waste incineration pretreatment caused by the problems of easy blockage, high maintenance cost, unsatisfactory combustion efficiency of the pumped waste and the like, and the system is provided with a primary crushing mechanism and a secondary crushing mechanism, so that the combustion effect of the pretreated waste can be further improved by carrying out two times of crushing treatment on the waste.

According to some embodiments of the utility model, secondary crushing mechanism includes the screw crusher and sets up the second hopper of screw crusher top, the second hopper be located the below of first crushing mechanism for be used for accepting the first crushing mechanism is broken the discarded object, the screw crusher be used for right the discarded object carries out the secondary crushing and with after the secondary crushing and mixing the discarded object carry extremely among the screw conveyer.

According to some embodiments of the present invention, the primary crushing mechanism comprises a first hopper, a feeder and a shear crusher, the first hopper is located above the shear crusher, the feeder is disposed on the first hopper for feeding the waste collected by the first hopper into the shear crusher, the shear crusher is connected to the second hopper; and a discharge door is arranged on the shear type crusher and used for discharging the wastes which cannot be crushed.

According to some embodiments of the utility model, the shear type breaker with first hopper with the connection is dismantled to the second hopper, once broken mechanism still includes breaker maintenance track, the shear type breaker can pass through breaker maintenance track shifts to the maintenance region.

According to some embodiments of the invention, the collecting mechanism comprises a first collecting device for transporting non-bulk waste; the first collecting device comprises a first conveyor, a lifting machine, a second conveyor and a first sealed cabin, the lifting machine is vertically arranged, the first conveyor is connected with the lower end of the lifting machine, one end of the second conveyor is connected with the upper end of the lifting machine, the other end of the second conveyor is connected with one end of the first sealed cabin, and the other end of the first sealed cabin is connected with the first hopper.

According to some embodiments of the utility model, be provided with the detection door on the first conveyer, with be used for detecting whether the packing size of non-bulk waste is qualified.

According to some embodiments of the invention, the collecting mechanism further comprises a second collecting device for collecting bulk waste; the second collection device includes feeder hopper, second sealed cabin, grab bucket and tipping bucket lifting machine, the second sealed cabin vertical set up in the top of first hopper, the feeder hopper sets up the upper end of second sealed cabin, the grab bucket be used for with bulk waste snatchs extremely in the feeder hopper, the tipping bucket lifting machine is used for through the tipping bucket form will bulk waste transport extremely in the feeder hopper.

According to some embodiments of the utility model, first capsule with the feed end and the discharge end of second capsule all are provided with the sealing gate, same time, first capsule with the sealing gate of at least one end is in the encapsulated situation in the feed end and the discharge end of second capsule.

According to the utility model discloses a some embodiments, first hopper the second hopper first sealed cabin with the second sealed cabin all is provided with nitrogen protection mechanism, a charge-in system for waste incineration preliminary treatment still is provided with waste gas recovery mechanism, nitrogen protection mechanism connects waste gas recovery mechanism.

According to some embodiments of the utility model, nitrogen protection mechanism is including filling nitrogen mouth, gas vent and oxygen detection device, fill the nitrogen mouth and be connected with nitrogen gas generating device, in order to be used for to first hopper the second hopper first sealed cabin with the second sealed cabin fills nitrogen gas, the gas vent (connect waste gas recovery mechanism, in order to be used for with first hopper the second hopper first sealed cabin with air in the second sealed cabin is discharged waste gas recovery mechanism, oxygen detection device is used for detecting first hopper the second hopper first sealed cabin with whether oxygen content in the second sealed cabin accords with the settlement standard.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic mechanical diagram of a feed system for waste combustion pretreatment of the present invention;

in the figure: 100-a first conveyor, 101-a detection door, 102-a lifting machine, 103-a second conveyor, 104-a first sealed cabin, 105-a sealed gate, 106-a storage pit, 107-a grab bucket, 108-a skip lifting machine, 109-a feed hopper, 110-a second sealed cabin, 200-a first hopper, 201-a feeder, 202-a shear crusher, 203-a discharge door, 204-a crusher maintenance track, 300-a second hopper, 301-a spiral crusher, 302-a discharge gate, 400-a spiral conveyor, 500-an incinerator pusher hopper, 600-an oxygen content detection device, 601-a nitrogen charging port, 602-an exhaust port and 700-an explosion venting pipeline.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the utility model provides a charge-in system for waste incineration preliminary treatment, including the collection mechanism, a crushing mechanism, secondary crushing mechanism, screw conveyer 400 and burn burning furnace pusher hopper 500 that connect gradually, collect the mechanism and be used for collecting the discarded object, a crushing mechanism and secondary crushing mechanism are used for broken discarded object, and screw conveyer 400 is arranged in carrying the discarded object after the breakage to burning furnace pusher hopper 500 in, the below of burning furnace pusher hopper 500 is provided with burns burning furnace pusher, it sets up to burn vertical or the slope of burning furnace pusher hopper 500, is used for passing through discarded object self gravity will the discarded object is sent into burn in the burning furnace pusher.

Adopt the feeding system who is used for waste incineration preliminary treatment that above-mentioned structure set up, for prior art cancelled the pumping mechanism, utilized waste self gravity to carry the discarded object to burning furnace stoker in to eliminated the pumping mechanism and blockked up easily, maintenance cost is big and through the unsatisfactory scheduling problem of the discarded object combustion efficiency of pumping to the harmful effects to waste incineration preliminary treatment, and this system has set up once broken mechanism and secondary crushing mechanism, carries out the combustion effect that twice broken processing can further promote the discarded object after the preliminary treatment to the discarded object.

According to some embodiments of the utility model, secondary crushing mechanism includes spiral crusher 301 and sets up the second hopper 300 in spiral crusher 301 top, and second hopper 300 is located the below of first crushing mechanism for be arranged in accepting the broken discarded object of first crushing mechanism, spiral crusher 301 is arranged in carrying out the secondary crushing to the discarded object and carrying the discarded object after the secondary crushing to screw conveyor 400.

In some embodiments, the second hopper 300 collects and feeds the waste crushed by the first crushing mechanism into the screw crusher 301, the screw crusher 301 comprises a cabinet, a first crushing shaft and a second crushing shaft, the cabinet is provided with a first crushing cavity and a second crushing cavity corresponding to the first crushing shaft and the second crushing shaft, the first crushing cavity and the second crushing cavity are horizontally arranged adjacently, the first crushing shaft is rotatably installed in the first crushing cavity, the second crushing shaft is rotatably installed in the second crushing cavity, and the smaller end of the first crushing shaft is positioned at the same end as the larger end of the second crushing shaft, wherein the second crushing cavity is communicated with the screw conveyor 400, a discharge gate 302 is arranged between the second crushing cavity and the screw conveyor 400, when the screw crusher 301 crushes, the waste is conveyed to the smaller end of the crushing shaft along with the larger end of the crushing shaft, and simultaneously enters the other crushing cavity for crushing through the communication part between the two crushing cavities, when the discharge gate 302 is not opened, the waste can be circularly crushed in the first crushing cavity and the second crushing cavity, after a certain time, the discharge gate 302 is opened, and the waste can enter the screw conveyer 400 from the smaller end of the second crushing cavity. Secondary crushing mechanism possesses breakage and transport function simultaneously, has improved the treatment effeciency of discarded object to spiral breaker 301 is better than in traditional breaker crushing effect, and then has promoted the combustion effect of the discarded object after the breakage.

According to some embodiments of the present invention, the primary crushing mechanism comprises a first hopper 200, a feeder 201 and a shear crusher 202, the first hopper 200 is located above the shear crusher 202, the feeder 201 is disposed on the first hopper 200 for feeding the waste collected by the first hopper 200 into the shear crusher 202, the shear crusher 202 is connected to a second hopper 300; the feeder 201 is provided with a discharge gate 203 for discharging non-fragmenting waste. First hopper 200 is arranged in accepting the discarded object that the collection mechanism carried and sends to shear type breaker 202 in and carry out the breakage, because there is great discarded object, feeder 201 can extrude, propelling movement, improves first broken mechanism's crushing efficiency, and the row material gate 203 on the feeder 201 can discharge the non-breakable discarded object, avoids the back process to take place to block up because non-breakable discarded object.

According to some embodiments of the utility model, shear crusher 202 is connected with first hopper 200 and second hopper 300 dismantlement, and once broken mechanism still includes breaker maintenance track 204, and shear crusher 202 can shift to the maintenance region through breaker maintenance track 204. Shear type breaker 202 carries out the primary breakage to the discarded object, compares in secondary crushing mechanism, and the broken object is bulky to still can contain the discarded object that can not be broken, so shear type breaker 202 operating condition is more abominable than spiral breaker 301, the condition of damage, trouble appears more easily, sets up breaker maintenance track 204 and more conveniently maintains shear type breaker 202, and then guarantees that the discarded object burns pretreatment charge-in system's normal, steady operation.

According to some embodiments of the invention, the collecting mechanism comprises a first collecting device for transporting non-bulk waste; the first collecting device comprises a first conveyor 100, a lifting machine 102, a second conveyor 103 and a first sealed cabin 104, wherein the lifting machine 102 is vertically arranged, the first conveyor 100 is connected with the lower end of the lifting machine 102, one end of the second conveyor 103 is connected with the upper end of the lifting machine 102, the other end of the second conveyor 103 is connected with one end of the first sealed cabin 104, and the other end of the first sealed cabin 104 is connected with a first hopper 200. The non-bulk waste is transported more efficiently through the transport line, and the non-bulk waste enters the first sealed cabin 104 for nitrogen charging treatment and then is sent into the first hopper 200 for primary crushing.

According to some embodiments of the present invention, the first conveyor 100 is provided with a detection door 101 for detecting whether the packaging size of the non-bulk waste is qualified. The detection door 101 can screen out non-bulk waste with overlarge packaging size, and damage to the system or influence on the crushing efficiency of the system caused by the overlarge waste is avoided.

According to some embodiments of the invention, the collecting mechanism further comprises a second collecting device for collecting the bulk waste; the second collecting device includes a feed hopper 109, a second capsule 110, a grab bucket 107 and a skip elevator 108, the second capsule 110 is vertically disposed above the first hopper 200, the feed hopper 109 is disposed at an upper end of the second capsule 110, the grab bucket 107 is for grabbing the bulk waste into the feed hopper 109, and the skip elevator 108 is for transporting the bulk waste into the feed hopper 109 in a skip form. Bulk waste is collected in the storage pit 106 in a centralized manner, the opening of the feed hopper 109 is vertically upward, the grab bucket 107 can directly grab the bulk waste in the storage pit 106 into the feed hopper 109, and in addition, some waste is inconvenient to grab, and the wastes which are inconvenient to grab can be placed into a skip bucket and are conveyed into the feed hopper 109 by the skip bucket elevator 108. And a plurality of feeding modes are provided, so that the conveying of different types of wastes is met.

According to some embodiments of the utility model, first hopper 200, second hopper 300, first capsule 104 and second capsule 110 all are provided with nitrogen protection mechanism, and the feed system for waste incineration preliminary treatment corresponds nitrogen protection mechanism and is provided with waste gas recovery mechanism. The nitrogen protection device comprises a nitrogen charging port 601, an exhaust port 602 and an oxygen content detection device 600, wherein the first hopper 200, the second hopper 300, the first sealed cabin 104 and the second sealed cabin 110 are respectively provided with the nitrogen charging port 601, the exhaust port 602 and the oxygen content detection device 600, the nitrogen charging port 601 is connected with a nitrogen generating device, the exhaust port 602 is connected with an exhaust gas recovery mechanism, the oxygen content inspection device monitors the oxygen content in the first hopper 200, the second hopper 300, the first sealed cabin 104 and the second sealed cabin 110, when the oxygen content exceeds a set standard, the nitrogen generating device charges nitrogen into the first hopper 200, the second hopper 300, the first sealed cabin 104 and the second sealed cabin 110 through the nitrogen charging port 601, and simultaneously the air in the first hopper 200, the second hopper 300, the first sealed cabin 104 and the second sealed cabin 110 is discharged into the exhaust gas recovery mechanism through the exhaust port 602, so that the waste is in an environment with low oxygen content, avoiding explosion in the process of crushing, and simultaneously, the exhaust port 602 also discharges harmful gas generated in the process of crushing waste into the waste gas recovery device.

In some embodiments, the first hopper 200 and the second hopper 300 are further provided with an explosion venting pipe 700 and a fire extinguishing device, the explosion venting pipe 700 can buffer and offset the impact generated when the waste explodes, and the fire extinguishing device includes a carbon dioxide fire extinguisher and a steam fire extinguisher.

The feeding method implemented based on the feeding system for waste incineration pretreatment comprises the following steps:

s1, performing nitrogen filling treatment after the waste is collected by the collection mechanism;

s2, after the nitrogen filling treatment is completed, the waste enters a primary crushing mechanism for crushing, and then enters a secondary crushing mechanism for secondary crushing and mixing;

s3, the secondarily crushed waste enters the screw conveyor 400, and the screw conveyor 400 conveys the waste into the incinerator pusher hopper 500, so that the waste can enter the incinerator pusher under the action of its own weight.

According to some embodiments of the present invention, the nitrogen charging process includes a nitrogen charging and oxygen discharging process for controlling the waste entering the primary crushing mechanism to be in an environment where a standard oxygen content is set. The two ends of the first sealed cabin 104 and the second sealed cabin 110 are both provided with a sealed gate 105, the two sealed gates 105 are not in an open state at the same time so as to ensure the sealing performance of the system, after the waste enters the sealed cabins, the sealed gates 105 at the two ends of the sealed cabins are closed, then the sealed cabins are filled with nitrogen, and the oxygen content is generally controlled below 5%.

In some embodiments, the first sealed chamber 104 and the second sealed chamber 110 are provided with a nitrogen protection mechanism, and the feeding system for waste incineration pretreatment is provided with a waste gas recovery mechanism corresponding to the nitrogen protection mechanism, and the nitrogen protection mechanism is connected with the waste gas recovery mechanism. The nitrogen protection device comprises a nitrogen generating device, a nitrogen charging port 601, an exhaust port 602 and an oxygen content detection device 600, wherein the nitrogen charging port 601, the exhaust port 602 and the oxygen content detection device 600 are arranged on the first sealed cabin 104 and the second sealed cabin 110 respectively, the nitrogen charging port 601 is connected with the nitrogen generating device, and the exhaust port 602 is connected with a waste gas recovery mechanism; waste is after getting into first sealed cabin 104, and sealed gate 105 at first sealed cabin 104 both ends is sealed, and nitrogen gas generating device fills into nitrogen gas through filling nitrogen mouth 601 in to first sealed cabin 104, and the air is discharged to abandonment collection device to exhaust gas 602 simultaneously, and until oxygen detection device detects that the oxygen content in first sealed cabin 104 is less than 5%, nitrogen gas generating device stops to fill nitrogen, and the gate that first sealed cabin 104 is close to crushing mechanism one end is opened, and the waste gets into crushing mechanism and carries out the breakage.

According to the above embodiment, the feeding modes of the feeding system are divided into three types: (1) for non-bulk waste, the non-bulk waste is detected to be qualified by a first conveyor 100 through a detection door 101, and then is lifted to a second conveyor 103 by a lifting machine 102, and the non-bulk waste is sent to a first sealed cabin 104 by the second conveyor 103 to be subjected to nitrogen charging treatment and then is sent to a first hopper 200; (2) for the bulk waste, the grab 107 grabs the bulk waste into the feed hopper 109, enters the second sealed cabin 110 from the feed hopper 109 for nitrogen charging treatment, and then is sent into the first hopper 200; (3) partial bulk waste is not easy to grab, the bulk waste which is not easy to grab is put into a skip bucket and is sent into a feed hopper 109 by a skip bucket elevator 108, and then the bulk waste enters a second sealed cabin 110 from the feed hopper 109 to be treated by nitrogen filling and is sent into a first hopper 200.

The discarded object that gets into first hopper 200 is carried out primary crushing by shear type breaker 202, because the discarded object volume of first breakage is great, it is broken to be provided with the supplementary shear type breaker 202 of feeder 201 on first hopper 200, be provided with row bin gate 203 on the feeder 201 simultaneously, a waste that can not be broken is used for discharging, consider that shear type breaker 202's operational environment is comparatively abominable, the broken object is bulky, and still can contain the waste that can not be broken, the damage appears more easily, the condition of trouble, it is provided with breaker maintenance track 204 to correspond shear type breaker 202, breaker maintenance track 204 more conveniently maintains or changes shear type breaker 202, and then guarantee waste incineration pretreatment feeding system's normal, steady operation.

The waste after primary crushing is collected by the second hopper 300 and then enters the spiral crusher 301 for secondary crushing, the spiral crusher 301 is connected with the spiral conveyor 400, a discharge gate 302 is arranged between the spiral crusher 301 and the spiral conveyor 400, the spiral crusher 301 is provided with two crushing cavities, when the discharge gate 302 is closed, the waste is circularly crushed in the two crushing cavities, the discharge gate 302 is opened, the spiral crusher 301 can convey the waste into the spiral conveyor 400, the tail end of the spiral conveyor 400 is connected with an incinerator pusher hopper 500 which is vertically arranged, the crushed waste enters the incinerator pusher device through the incinerator pusher hopper 500, and the incinerator pusher device pushes the crushed waste into the incinerator.

The first sealed cabin 104, the second sealed cabin 110, the first hopper 200 and the second hopper 300 are all provided with a nitrogen protection device and an exhaust gas recovery device, so that the system is ensured to be in a safe crushing environment with low oxygen content in the crushing process, toxic exhaust gas cannot leak, and meanwhile, the first hopper 200 and the second hopper 300 are also provided with an explosion venting pipeline 700 and a fire extinguishing device so as to deal with the conditions of explosion and fire which may occur in the crushing process.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The feeding system for waste incineration pretreatment is characterized by comprising a collecting mechanism, a primary crushing mechanism, a secondary crushing mechanism, a screw conveyor (400) and an incinerator pusher hopper (500) which are sequentially connected, wherein the collecting mechanism is used for collecting waste, the primary crushing mechanism and the secondary crushing mechanism are used for crushing the waste, the screw conveyor (400) is used for conveying the crushed waste to the incinerator pusher hopper (500), an incinerator pusher is arranged below the incinerator pusher hopper (500), and the incinerator pusher hopper (500) is vertically or obliquely arranged and is used for conveying the waste into the incinerator pusher through the self-gravity of the waste.

2. The feeding system for waste incineration pre-treatment according to claim 1, characterised in that the secondary crushing mechanism comprises a screw crusher (301) and a second hopper (300) arranged above the screw crusher (301), the second hopper (300) being located below the primary crushing mechanism for receiving the waste crushed by the primary crushing mechanism, the screw crusher (301) being used for secondary crushing of the waste and conveying the secondarily crushed and mixed waste into the screw conveyor (400).

3. The feeding system for waste incineration pre-treatment according to claim 2, wherein the primary crushing mechanism comprises a first hopper (200), a feeder (201) and a shear crusher (202), the first hopper (200) being located above the shear crusher (202), the feeder (201) being arranged on the first hopper (200) for feeding the waste collected by the first hopper (200) into the shear crusher (202), the shear crusher (202) being connected to the second hopper (300); a discharge door (203) is arranged on the feeder (201) and used for discharging the waste which can not be broken.

4. The feeding system for waste incineration pre-treatment according to claim 3, wherein the shear crusher (202) is detachably connected with the first hopper (200) and the second hopper (300), the primary crushing mechanism further comprising a crusher service track (204), the shear crusher (202) being transferable to a service area through the crusher service track (204).

5. A feeding system for waste incineration pre-treatment according to claim 3, characterised in that the collecting means comprise a first collecting device for transporting non-bulk waste; the first collecting device comprises a first conveyor (100), a lifting machine (102), a second conveyor (103) and a first sealed cabin (104), the lifting machine (102) is vertically arranged, the first conveyor (100) is connected with the lower end of the lifting machine (102), one end of the second conveyor (103) is connected with the upper end of the lifting machine (102), the other end of the second conveyor (103) is connected with one end of the first sealed cabin (104), and the other end of the first sealed cabin (104) is connected with the first hopper (200).

6. Feeding system for waste incineration pre-treatment according to claim 5, characterised in that a detection gate (101) is provided on the first conveyor (100) for detecting whether the packaging size of the non-bulk waste is acceptable.

7. The feeding system for waste incineration pre-treatment according to claim 5, wherein the collecting mechanism further comprises a second collecting device for collecting bulk waste; the second collection device comprises a feed hopper (109), a second sealed cabin (110), a grab bucket (107) and a skip hoist (108), the second sealed cabin (110) is vertically arranged above the first hopper (200), the feed hopper (109) is arranged at the upper end of the second sealed cabin (110), the grab bucket (107) is used for grabbing the bulk waste into the feed hopper (109), and the skip hoist (108) is used for transporting the bulk waste into the feed hopper (109) in a skip form.

8. The feeding system for waste incineration pre-treatment according to claim 7, characterised in that the feeding and discharging ends of the first capsule (104) and the second capsule (110) are each provided with a sealing shutter (105), and at the same time the sealing shutter (105) of at least one of the feeding and discharging ends of the first capsule (104) and the second capsule (110) is in a closed state.

9. The feeding system for waste incineration pre-treatment according to claim 7, characterised in that the first hopper (200), the second hopper (300), the first capsule (104) and the second capsule (110) are all provided with a nitrogen protection mechanism, the feeding system for waste incineration pre-treatment also being provided with an exhaust gas recovery mechanism.

10. Feed system for waste incineration pre-treatment according to claim 9, the nitrogen protection mechanism comprises a nitrogen charging port (601), an exhaust port (602) and an oxygen detection device (600), the nitrogen charging port (601) is connected with a nitrogen generation device, for charging nitrogen gas into the first hopper (200), the second hopper (300), the first capsule (104) and the second capsule (110), the exhaust port (602) being connected to the exhaust gas recovery mechanism, for discharging air in the first hopper (200), the second hopper (300), the first capsule (104) and the second capsule (110) into the exhaust gas recovery mechanism, the oxygen detection device is used for detecting whether the oxygen content in the first hopper (200), the second hopper (300), the first sealed cabin (104) and the second sealed cabin (110) meets set standards or not.

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