Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for manufacturing a refuse derived fuel package, which are used to improve the packaging effect of combustible waste.
Based on the above purpose, the present invention provides a method for manufacturing a refuse derived fuel package, comprising:
the method comprises the following steps: manufacturing a wrapping layer, melting plastic particles, entering a die extrusion head, and extruding the plastic particles through the die extrusion head to form the wrapping layer;
step two: sealing the head end of the wrapping layer, cutting the wrapping layer extruded from the extrusion head of the die, and forming a mutually adhered closed end at the head end of the cut wrapping layer;
step three: filling derived fuel, conveying combustible waste into the extrusion head of the die while the step one is carried out, and when the step two is finished, conveying the combustible waste to the closed end of the wrapping layer and the wrapping layer continuously;
extruding the wrapping layer and the combustible waste from the extrusion head of the die simultaneously until the length size requirement of the refuse derived fuel package is met;
step four: and (4) sealing the tail, extruding the wrapping layer and the combustible waste from the die extrusion head simultaneously until the length size requirement of the refuse derived fuel package is met, stopping conveying the combustible waste, continuously conveying the refuse derived fuel package outside the die extrusion head, continuously extruding the wrapping layer through the die extrusion head, performing secondary cutting treatment, forming the tail end of the cut wrapping layer into a closed end which is mutually adhered, forming the head end of the wrapping layer of the next refuse derived fuel package at the discharge end of the die extrusion head, and repeating the steps from the first step to the fourth step.
Based on the same invention creation, the invention also provides a garbage derived fuel package manufacturing device, which comprises: a die extrusion head, a first conveying box, a first driving part, a second conveying box, a second driving part, a cutting tool and a cooling part, wherein,
an extrusion outlet is formed in one side of the die extrusion head, and an outer cavity and an inner cavity are sequentially formed outside and inside the die extrusion head;
one end of the first conveying box is communicated with the inner cavity;
the first driving part is arranged on the first conveying box and is used for conveying combustible waste in the first conveying box into the inner cavity;
one end of the second conveying box is communicated with the outer cavity;
the second driving part is arranged on the second conveying box and is used for conveying the molten plastic in the second conveying box into the outer cavity;
the cutting tool is arranged at the extrusion outlet and is used for cutting off the refuse derived fuel extruded from the extrusion outlet;
the cooling portion is provided at the extrusion outlet for cooling the molten plastic extruded from the extrusion outlet.
Optionally, the first driving part comprises a first motor and a first auger, the first auger is rotatably connected in the first conveying box, and one end of the first auger, which is far away from the die extrusion head, is in power connection with the first motor.
Optionally, first drive division still includes the converter, the converter with first motor electric connection for control first motor intermittent type work, cutting tool keeps away from one side of extrusion export is equipped with the conveyer belt, follows the rubbish derived fuel that the extrusion export extruded passes through the conveyer belt shifts.
Optionally, the second drive division includes second motor and second auger, the second auger rotates to be connected in the second delivery box, the second auger is kept away from the two ends of mould extrusion head with second motor power is connected.
Optionally, be equipped with the rubbish feeder hopper on the first transport case, combustible waste passes through the rubbish feeder hopper enters into first transport case.
Optionally, a communicating pipe is arranged on the second conveying box, a plastic feeding hopper is arranged at one end of the communicating pipe, which is far away from the second conveying box, and a plastic hot melting device is connected to the communicating pipe in series.
Optionally, an extrusion outlet of the die extrusion head is provided with an inclined section, and an included angle between the inclined section and a horizontal plane is 10-25 degrees.
Optionally, a spray pipe is arranged on one side of the cutting tool away from the extrusion outlet, and the spray pipe is used for spraying cold water to the refuse derived fuel, so that the refuse derived fuel is rapidly hardened after being extruded from the extrusion outlet.
The invention comprises the following steps: manufacturing a wrapping layer; step two: sealing the head end of the wrapping layer; step three: processing the filling derivative fuel; step four: and (5) tail sealing treatment. The scattered combustible waste can be conveniently wrapped by the wrapping layer to obtain the formed refuse derived fuel package. Because combustible waste is lived through the direct parcel of parcel layer, promoted the packing effect of the combustible waste of different kinds of mixed rubbish, convenient subsequent transport, and whole rubbish derived fuel package is sealed, can not have smell or other material flows to expose, environmental protection more.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
In order to achieve the above object, an embodiment of the present invention provides a method for manufacturing a refuse derived fuel package. As shown in fig. 1, a method for manufacturing a refuse derived fuel package includes:
the method comprises the following steps: manufacturing a wrapping layer, melting plastic particles, entering a die extrusion head, and extruding the plastic particles through the die extrusion head to form the wrapping layer;
step two: sealing the head end of the wrapping layer, cutting the wrapping layer extruded from the extrusion head of the die, and forming a mutually adhered closed end at the head end of the cut wrapping layer;
step three: filling derived fuel, conveying combustible waste into the extrusion head of the die while the step one is carried out, and when the step two is finished, conveying the combustible waste to the closed end of the wrapping layer and the wrapping layer continuously;
extruding the wrapping layer and the combustible waste from the extrusion head of the die simultaneously until the length size requirement of the refuse derived fuel package is met;
step four: and (4) sealing the tail, extruding the wrapping layer and the combustible waste from the die extrusion head simultaneously until the length size requirement of the refuse derived fuel package is met, stopping conveying the combustible waste, continuously conveying the refuse derived fuel package outside the die extrusion head, continuously extruding the wrapping layer through the die extrusion head, performing secondary cutting treatment, forming the tail end of the cut wrapping layer into a closed end which is mutually adhered, forming the head end of the wrapping layer of the next refuse derived fuel package at the discharge end of the die extrusion head, and repeating the steps from the first step to the fourth step.
According to the steps, the invention can conveniently wrap the scattered combustible waste through the wrapping layer to obtain the formed refuse derived fuel package. Because combustible waste is lived through the direct parcel of parcel layer, promoted the packing effect of the combustible waste of different kinds of mixed rubbish, convenient subsequent transport, and whole rubbish derived fuel package is sealed, can not have smell or other material flows to expose, environmental protection more.
As shown in fig. 2 to 4, a refuse derived fuel package manufacturing apparatus includes: a die extrusion head 1, a first conveying box 2, a first driving part, a second conveying box 3, a second driving part, a cutting tool 4 and a cooling part, wherein,
an extrusion outlet 11 is arranged on one side of the die extrusion head 1, an outer cavity 12 and an inner cavity 13 are sequentially arranged outside and inside the die extrusion head 1, and optionally, the height of the outer cavity 12 is 2-5 mm;
one end of the first conveying box 2 is communicated with the inner cavity 13;
the first driving part is arranged on the first conveying box 2 and is used for conveying the combustible waste 9 in the first conveying box 2 into the inner cavity 13;
one end of the second conveying box 3 is communicated with the outer cavity 12;
the second driving part is arranged on the second conveying box 3 and is used for conveying the molten plastic in the second conveying box 3 into the outer cavity 12;
the cutting tool 4 is arranged at the extrusion outlet 11 for cutting off the refuse derived fuel extruded from the extrusion outlet 11;
the cooling portion is provided at the extrusion outlet for cooling the molten plastic extruded from the extrusion outlet. In one embodiment, the cooling portion may be a cooling fan 61 that initially hardens the molten plastic by air cooling. In order to further promote the hardening effect of the primary hardening, the outer surface of the extrusion head at the extrusion port is wrapped by a cooling water pipe 62, circulating cooling water is introduced into the cooling water pipe 62, and the hardening effect of the primary hardening is further promoted by the cooling water.
When the equipment is used for producing the refuse derived fuel, the molten plastic in the second conveying box 3 is conveyed into the outer cavity 12 through the second driving part, the molten plastic is extruded from the extrusion outlet 11, the molten plastic is primarily hardened through the cooling part after being extruded, a closed front port is formed after being cut by the cutting tool 4, the combustible waste 9 in the first conveying box 2 is conveyed into the inner cavity 13 through the first driving part, the combustible waste 9 is extruded from the extrusion outlet 11, the extruded molten plastic wraps the extruded combustible waste 9, the molten plastic is further hardened under the external environment to form the plastic shell 8, the combustible waste 9 in the plastic shell 8 is wrapped, the formed refuse derived fuel is obtained, and when the refuse derived fuel reaches the preset length, the cutting tool 4 cuts the refuse derived fuel, and the molten plastic is positioned in the plastic shell.
According to the invention, the extruded combustible waste 9 is wrapped by the extruded molten plastic, the molten plastic is hardened in the external environment to form the plastic shell 8, the combustible waste 9 in the plastic shell 8 is wrapped, and the formed refuse derived fuel is obtained.
In some embodiments, the first driving portion includes a first motor 21 and a first auger 22, the first auger 22 is rotatably connected in the first conveying box 2, and an end of the first auger 22 away from the die extrusion head 1 is in power connection with the first motor 21. During operation, first motor 21 drives first auger 22 and rotates, realizes carrying combustible waste 9 in first delivery box 2 through the rotation of first auger 22.
In order to further improve the forming effect of the refuse derived fuel, the first driving part further comprises a frequency converter, the frequency converter is electrically connected with the first motor 21 and used for controlling the first motor 21 to work intermittently, a conveying belt 7 is arranged on one side of the cutting tool 4 far away from the extrusion outlet 11, and the refuse derived fuel extruded from the extrusion outlet 11 is transferred through the conveying belt 7.
When the refuse derived fuel extruded from the extrusion outlet 11 reaches a preset length, the frequency converter controls the first motor 21 to stop working, and under the condition that the second motor 31 continues to work, a hollow part appears at the tail part of the formed refuse derived fuel, the front part of the refuse derived fuel falls onto the conveying belt and moves forwards under the driving of the conveying belt, when the preset length is reached, the refuse derived fuel is cut off by the cutting tool 4, and the tail part of the refuse derived fuel is wrapped by redundant plastic at the tail part of the refuse derived fuel to form a finished product refuse derived fuel similar to the shape of a capsule, so that the forming effect of the refuse derived fuel is further improved.
In some embodiments, the manufacturing apparatus may further comprise a robot 71, wherein the robot 71 is configured to contact the pre-hardened waste fuel to pull the waste fuel from the extrusion outlet 11. The manipulator 71 can be designed with several working modes, for example, in one of the working modes, the manipulator 71 clamps and pulls out the refuse derived fuel and then rotates and then cuts the refuse derived fuel, so that the tail of the refuse derived fuel is wrapped and sealed better, and the forming effect of the refuse derived fuel is further improved.
In some embodiments, the second driving part comprises a second motor 31 and a second packing auger 32, the second packing auger 32 is rotatably connected in the second conveying box 3, and two ends of the second packing auger 32 far away from the die extrusion head 1 are in power connection with the second motor 31. During operation, the second motor 31 drives the second packing auger 32 to rotate, and molten plastics in the second conveying box 3 are conveyed through the rotation of the second packing auger 32.
Optionally, the second conveying box is further wrapped by an insulating layer 5, and the insulating layer 5 can reduce the temperature reduction amplitude of the molten plastics in the conveying process.
In some embodiments, a waste hopper 23 is provided on the first conveyor bin 2, and the combustible waste 9 enters the first conveyor bin 2 through the waste hopper 23.
The combustible waste 9 is obtained after the processes of screening, crushing and mixing, the combustible waste 9 can contain urban domestic garbage screened materials and common industrial solid waste which has a certain heat value and does not release toxic substances in the combustion process, such as waste fabrics, activated sludge, paper without recovery value and the like, and 5-8% of carbide slag waste is doped in the mixing process.
In some embodiments, a communicating pipe 33 is disposed on the second delivery box 3, a plastic feed hopper 34 is disposed at an end of the communicating pipe 33 far away from the second delivery box 3, and a plastic hot melting device 35 is connected in series to the communicating pipe 33.
Plastics are added into a plastic hot melting device 35 through a plastic feed hopper 34 to obtain molten plastics, the molten plastics enter the second conveying box 3 through a communicating pipe 33, the plastics can be various plastic products produced in the screening process of municipal domestic garbage, general industrial garbage and stale garbage, such as garbage bags, express packaging bags and the like, and the plastic wastes can be used after being subjected to water washing and drying pretreatment.
In some embodiments, the extrusion head 1 has an inclined section 14 at the extrusion outlet 11, and the inclined section 14 forms an angle of 10-25 degrees with the horizontal plane. Therefore, when the combustible waste 9 is conveyed, an extrusion effect can be formed at the extrusion outlet 11, so that the combustible waste 9 is extruded to be more compact, and the forming effect of the refuse derived fuel is further improved.
The hardening speed of the refuse derived fuel directly extruded from the extrusion outlet 11 is low, in order to solve the problem, a spraying pipe 6 is arranged on one side of the cutting tool 4 away from the extrusion outlet 11, and the spraying pipe 6 is used for spraying cold water to the refuse derived fuel, so that the refuse derived fuel is quickly hardened after being extruded from the extrusion outlet 11, and the forming effect of the refuse derived fuel is further improved.
In some embodiments, the side of the cutting tool 4 facing away from the extrusion outlet 11 is provided with a conveyor belt 7, and the refuse derived fuel extruded from the extrusion outlet 11 is diverted by the conveyor belt 7.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.