CN212920017U

CN212920017U - Plastic melting machine with air filtering function

Info

Publication number: CN212920017U
Application number: CN202021364444.0U
Authority: CN
Inventors: 王西明
Original assignee: Shanghai Ce Composite Co ltd
Current assignee: Shanghai Ce Composite Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-09
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a plastic melting machine with air filtering function, which comprises a workbench, a stirring and mixing structure, a spraying structure and a filtering structure; a workbench: the machine is melted to its upper surface left side is equipped with plastics, the upper surface center department of workstation is equipped with the acid-base reaction case, the mouth that advances of acid-base reaction case left surface center department links to each other with the outlet flue of plastics melting machine right flank center department through flue gas pipeline one, the upper surface right side of workstation is equipped with the filtration reaction case, the top of filtration reaction case is open structure, the mouth that advances of filtration reaction case left surface upper end passes through flue gas pipeline two and links to each other with the outlet flue of acid-base reaction case right flank upper end, the upper surface right side edge of workstation is equipped with the draught fan, this take filtration function's plastics to melt the machine, the realization is to the effectual grasp control of lime slurry concentration in the device, be convenient for change the processing to the inside active carbon of filtration reaction case.

Description

Plastic melting machine with air filtering function

Technical Field

The utility model relates to an environmental protection technical field specifically is a take plastics of filtration function to melt machine.

Background

The organic matters in the plastics comprise benzene, formaldehyde, cresol, phenol, acetylene and the like, except that phenol, polyvinyl chloride and fluorocarbon are not easy to combust, other inflammable components can generate strong pungent odor and fatal toxic gas, smoke generated by the combustion of the plastics can reduce the visibility of air within a few seconds, and the components in the thick smoke are complex and have high toxicity, such as polyethylene and polyvinyl chloride plastics can generate carbon monoxide after combustion, chlorine element is converted into hydrogen chloride which is typical toxic gas, different additives can be added during the production of different plastics, and the additives can also emit toxic substances during the combustion, so that organic matters such as benzene, phenol, formaldehyde, acetylene and the like can be generated in the final combustion products, the specific waste gas products are difficult to control, and accurate prediction needs to be carried out according to the components of the combusted plastics, present plastics of taking filtration function melt machine, can not guarantee to provide the lime thick liquid of qualified concentration for the device, and lime thick liquid after spraying can not utilize once more, cause the wasting of resources, can not spray lime thick liquid to the device is inside even, guarantee that acid-base reaction can not fully realize, gas is not enough with the contact of active carbon, the later stage of being not convenient for is changed the active carbon that became invalid, complex operation is complicated, can't realize the effectual grasp control of the lime thick liquid concentration in the device, be not convenient for change the processing to the active carbon of device inside, the realization that consequently can solve the plastics of taking filtration function of this type of problem melt machine is imperative.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome current defect, provide a take plastics of filtration function to melt machine, realize the effectual grasp control of lime slurry concentration in the device, be convenient for change the processing to the inside active carbon of filtering reaction case, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a plastic melting machine with an air filtering function comprises a workbench, a stirring and mixing structure, a spraying structure and a filtering structure;

a workbench: the left side of the upper surface of the workbench is provided with a plastic melting machine, the center of the upper surface of the workbench is provided with an acid-base reaction box, a smoke inlet at the center of the left side surface of the acid-base reaction box is connected with a smoke outlet at the center of the right side surface of the plastic melting machine through a smoke pipeline I, the right side of the upper surface of the workbench is provided with a filtration reaction box, the top end of the filtration reaction box is of an open structure, a smoke inlet at the upper end of the left side surface of the filtration reaction box is connected with a smoke outlet at the upper end of the right side surface of the acid-base reaction box through a smoke pipeline II, the right edge of the upper surface of the workbench is provided with a draught fan, an air inlet of the draught fan is connected with a smoke outlet at the bottom end of the right side surface of the filtration reaction box through a smoke pipeline III, the center of the upper surface of the workbench is provided with a lime slurry pump, a slurry inlet of the lime slurry pump is connected;

stirring mixing structure: the acid-base reaction box is arranged at the inner bottom end of the acid-base reaction box;

spraying a structure: the acid-base reaction box is arranged at the top end of the inside of the acid-base reaction box;

the filtering structure is as follows: the filter is arranged in the filter reaction box;

wherein: still include the PLC controller, the PLC controller sets up in the upper surface center department of acid-base reaction case, external power source is connected to the input electricity of PLC controller, the output of PLC controller is connected to the equal electricity of input of lime stuff pump and draught fan, lime stuff for the device provides qualified concentration, and lime stuff secondary after spraying stirs, avoid the wasting of resources, even spraying lime stuff to the device inside, make more thoroughly of acid-base reaction, fully contact gas and active carbon, the later stage of being convenient for is changed the active carbon that became invalid, and easy operation is convenient, realize the effectual control of mastering of the lime stuff concentration in the device, be convenient for change the processing to the active carbon of filtering reaction incasement portion.

Further, the stirring and uniformly mixing structure comprises a motor I, a rotating shaft I, a driving wheel, a driven wheel, stirring blades and a rotating shaft II, wherein the motor I is arranged at the bottom end of the front side face of the acid-base reaction box, an output shaft of the motor I penetrates through a shaft hole of a sealing bearing at the bottom end of the front side face of the acid-base reaction box and is provided with the rotating shaft I at the rear end, the rear end of the rotating shaft I is rotatably connected with the rear side face of the acid-base reaction box through the sealing bearing, the driving wheel is arranged in the middle of the rotating shaft I, the front end and the rear end of the rotating shaft II are rotatably connected with the inner wall of the acid-base reaction box through the sealing bearing, the driven wheel is arranged in the middle of the rotating shaft II, the driving wheel is meshed with the driven wheel, the stirring blades are arranged at the rear part of the rotating shaft I and, resource waste is avoided.

Further, the spraying structure comprises a motor II, a rotating shaft III, a conveyor belt, a limiting baffle ring, a spray rod, a first slurry conveying pipe and a chute, the motor II is symmetrically arranged at the top end of the left side surface of the acid-base reaction box, the output shaft of the motor II is rotatably connected with the left side surface of the acid-base reaction box through a sealed bearing, the output shaft of the motor II extends into the acid-base reaction box and is provided with the rotating shaft III at the right end, the two rotating shafts III are driven by the conveyor belt, the limiting baffle ring is arranged at the right end of the rotating shaft III, the spray rod is arranged on the upper surface of the conveyor belt, nozzles are uniformly distributed at the lower surface of the spray rod and are provided with the chute at the upper end of the inner wall of the right side of the acid-base reaction box, the spray rod is slidably connected with the chute, a slurry inlet of the first slurry conveying pipe penetrates through a through hole in the inner wall of the right side of, the input end of the second motor is electrically connected with the output end of the PLC, and lime slurry is uniformly sprayed into the device, so that the acid-base reaction is more thorough.

Further, filtration includes slot, fixed plate, handle, active carbon rose box and active carbon, the symmetry evenly sets up in the inner wall of filtering reaction case around the slot, both sides peg graft with the slot that corresponds around the active carbon rose box, the top of active carbon rose box is open structure, the left and right sides face of active carbon rose box all is equipped with evenly distributed's filtration pore, the inside of active carbon rose box all is filled with active carbon, the upper surface of active carbon rose box all is connected with the lower fixed surface of fixed plate, the upper surface of fixed plate is equipped with the handle, fully contact gas and active carbon, the later stage of being convenient for is changed the active carbon that became invalid.

Further, still include filling tube and valve, the right flank feed inlet department of acid-base reaction case is equipped with the filling tube, and the body of filling tube is inside to establish ties there is the valve, and easy operation is convenient, realizes carrying out effectual grasp control to the lime thick liquid concentration in the device.

Further, still include the chamber door, the upper surface left side of chamber door is articulated through hinge and filtering reaction case's top right side, and the chamber door corresponds with filtering reaction case's open position, is convenient for change the processing to the inside active carbon of filtering reaction case.

Compared with the prior art, the beneficial effects of the utility model are that: this take plastics of air filter function to melt machine has following benefit:

1. the method comprises the steps of opening a valve, adding an appropriate amount of acid-base neutralizing substances such as water and hydrated lime by using a feeding pipe, closing the valve, controlling a motor to start to operate, driving a rotating shaft to start to rotate by the motor, driving a driving wheel to be meshed with a driven wheel to drive a rotating shaft to start to rotate, further driving a stirring blade to start stirring the added hydrated lime and water, ensuring that lime slurry with qualified concentration is provided for a lime slurry pump, controlling the lime slurry pump to start to operate, conveying the sufficiently-stirred lime slurry to a slurry inlet of a slurry conveying pipe I through a slurry suction pipe and a slurry conveying pipe II, conveying the lime slurry into a spray rod through the slurry conveying pipe I, enabling the sprayed lime slurry to fall into the bottom of an acid-base reaction box to continue to be stirred, and ensuring the resource to be recycled.

2. All fill the active carbon to inside the active carbon filter box through the opening at active carbon filter box top, utilize the handle to lift the active carbon filter box, plug-in connect the active carbon filter box to the slot that corresponds in, cover the chamber door, the gaseous flue gas pipeline two that accomplish the acid-base reaction enters into the filtration reaction incasement, gaseous filtration pore and the active carbon of incasement that passes through the active carbon filter box left and right sides react, adsorb impurity in the gas, open the chamber door, utilize the handle to regularly change the active carbon in the active carbon filter box, it is more abundant to guarantee to filter.

3. The control motor II synchronously starts to rotate positively and negatively at the same time, the motor II drives the corresponding rotating shaft three to rotate, the rotating shaft three drives the conveying belt to start conveying, the conveying belt drives the spray rod to start to slide in the sliding groove in the front and back, lime slurry conveyed from the lime slurry pump is sprayed through the spray nozzles uniformly distributed on the spray rod, the acid gas generated by the plastic melting machine is completely subjected to neutralization reaction, and the lime slurry is uniformly sprayed into the acid-base reaction box.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the stirring and mixing structure of the present invention;

FIG. 3 is a schematic sectional view of the spraying structure of the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the filtering structure of the present invention.

In the figure: 1 workbench, 2 plastic melting machine, 3 acid-base reaction box, 4 filtering reaction box, 5 PLC controller, 6 stirring and mixing structure, 61 motor I, 62 rotating shaft I, 63 driving wheel, 64 driven wheel, 65 stirring blade, 66 rotating shaft II, 7 spraying structure, 71 motor II, 72 rotating shaft III, 73 conveying belt, 74 limit baffle ring, 75 spray rod, 76 pulp conveying pipe I, 77 chute, 8 filtering structure, 81 slot, 82 fixing plate, 83 handle, 84 activated carbon filtering box, 85 activated carbon, 9 lime slurry pump, 10 draught fan, 11 pulp suction pipe, 12 pulp conveying pipe II, 13 smoke pipeline I, 14 smoke pipeline II, 15 smoke pipeline III, 16 feeding pipe, 17 valve, 18 box door.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a plastic melting machine with an air filtering function comprises a workbench 1, a stirring and uniformly mixing structure 6, a spraying structure 7 and a filtering structure 8;

a workbench 1: the left side of the upper surface of the worktable is provided with a plastic melting machine 2, the center of the upper surface of the worktable 1 is provided with an acid-base reaction box 3, a smoke inlet at the center of the left side surface of the acid-base reaction box 3 is connected with a smoke outlet at the center of the right side surface of the plastic melting machine 2 through a smoke pipeline I13, the right side of the upper surface of the worktable 1 is provided with a filtering reaction box 4, the top end of the filtering reaction box 4 is of an open structure, a smoke inlet at the upper end of the left side surface of the filtering reaction box 4 is connected with a smoke outlet at the upper end of the right side surface of the acid-base reaction box 3 through a smoke pipeline II 14, the right edge of the upper surface of the worktable 1 is provided with an induced draft fan 10, an air inlet of the induced draft fan 10 is connected with a smoke outlet at the bottom end of the right side surface of the filtering reaction box 4 through a smoke pipeline III 15, the center of the upper surface, the slurry outlet of the lime slurry pump 9 is connected with a through hole at the top end of the right side surface of the acid-base reaction box 3 through a slurry conveying pipe II 12, the acid-base reaction box 3 ensures that gas is fully subjected to acid-base neutralization, and the filtering reaction box 4 adsorbs impurities in the gas, so that the filtering is more complete;

stirring mixing structure 6: set up in the inside bottom of acid-base reaction case 3, stirring mixing structure 6 includes motor one 61, rotation axis one 62, action wheel 63, from driving wheel 64, stirring vane 65 and rotation axis two 66, motor one 61 sets up in the leading flank bottom of acid-base reaction case 3, the output shaft of motor one 61 passes the shaft hole of acid-base reaction case 3 leading flank bottom sealed bearing and is equipped with rotation axis one 62 in back end department, the back end of rotation axis one 62 is connected with the trailing flank rotation of acid-base reaction case 3 through sealed bearing, the middle part of rotation axis one 62 is equipped with action wheel 63, the front and back end of rotation axis two 66 all is connected with the inner wall rotation of acid-base reaction case 3 through sealed bearing, the middle part of rotation axis two 66 is equipped with from driving wheel 64, action wheel 63 is connected with the meshing of driving wheel 64, the rear portion of rotation axis one 62 and the front portion of rotation axis two 66 all are equipped, the first motor 61 drives the first rotating shaft 62 to rotate, and the driving wheel 63 is meshed with the driven wheel 64, so that the second rotating shaft 66 is driven to rotate, the stirring blades 65 are driven to stir the added hydrated lime and water, and the lime slurry pump 9 is guaranteed to provide lime slurry with qualified concentration;

the spraying structure 7: the spraying structure 7 comprises a second motor 71, a third rotating shaft 72, a conveyor belt 73, a limit stop ring 74, a spray rod 75, a first slurry conveying pipe 76 and a chute 77, the second motor 71 is symmetrically arranged at the top end of the left side surface of the acid-base reaction box 3, output shafts of the second motor 71 are rotatably connected with the left side surface of the acid-base reaction box 3 through sealed bearings, the output shafts of the second motor 71 extend into the acid-base reaction box 3 and are provided with the third rotating shaft 72 at the right end, the two third rotating shafts 72 are driven by the conveyor belt 73, the right end of the third rotating shaft 72 is provided with the limit stop ring 74, the upper surface of the conveyor belt 73 is provided with the spray rod 75, nozzles are uniformly distributed at the lower surface of the spray rod 75, the chute 77 is arranged at the upper end of the right inner wall of the acid-base reaction box 3, the spray rod 75 is slidably connected with the chute 77, a slurry inlet of the first slurry conveying pipe 76 penetrates through a through hole in the right inner wall of the, the slurry outlet of the first slurry conveying pipe 76 is connected with the slurry inlet on the upper surface of the spray rod 75, the motor II 71 is controlled to synchronously start to rotate forwards and backwards at the same time, the motor II 71 drives the corresponding rotating shaft III 72 to start to rotate, the rotating shaft III 72 drives the conveyor belt 73 to start to convey, the conveyor belt 73 drives the spray rod 75 to start to slide forwards and backwards in the chute 77, and the lime slurry conveyed by the lime slurry pump 9 is sprayed through the spray heads uniformly distributed on the spray rod 75;

the filter structure 8: set up in the inside of filtering reaction case 4, filtration 8 includes slot 81, fixed plate 82, handle 83, active carbon filter case 84 and active carbon 85, slot 81 front and back symmetry evenly sets up in the inner wall of filtering reaction case 4, the front and back both sides of active carbon filter case 84 are pegged graft with corresponding slot 81, the top of active carbon filter case 84 is open structure, the left and right sides face of active carbon filter case 84 all is equipped with evenly distributed's filtration pore, the inside of active carbon filter case 84 all is filled with active carbon 85, the upper surface of active carbon filter case 84 all is connected with the lower surface fixed of fixed plate 82, the upper surface of fixed plate 82 is equipped with handle 83, all fill active carbon 85 to the inside of active carbon filter case 84 through the opening at active carbon filter case 84 top, utilize handle 83 to mention active carbon filter case 84, peg graft active carbon filter case 84 to corresponding slot 81, covering the box door 18, and performing adsorption reaction on the gas entering the filtering reaction box 4;

wherein: still include PLC controller 5, PLC controller 5 sets up in the upper surface center department of acid-base reaction box 3, external power source is connected to PLC controller 5's input electricity, motor 61, two 71, PLC controller 5's output is all connected to the input of lime slurry pump 9 and draught fan 10 electricity, motor 61 guarantees that acid-base neutralization materials such as hydrated lime carry out abundant stirring with water, guarantee that the concentration of lime slurry is in qualified scope, inside two 71 guarantee that the lime slurry that sprays out can evenly unrestrained to the device, guarantee that acid-base neutralization reaction is complete, lime slurry pump 9 carries the abundant lime slurry of stirring to spraying the structure, carry out cyclic utilization to lime slurry, draught fan 10 guarantees the gas circulation of device, make gas circulate in the device.

Wherein, still include filling tube 16 and valve 17, the right flank feed inlet department of acid-base reaction box 3 is equipped with filling tube 16, and the inside series connection of body of filling tube 16 has valve 17, opens valve 17, utilizes filling tube 16 to add right amount of water and lime hydrate etc. acid-base neutralization material after, closes valve 17, stirs the work.

The filter box further comprises a box door 18, the left side of the upper surface of the box door 18 is hinged to the right side of the top end of the filtering reaction box 4 through a hinge, the box door 18 corresponds to the opening position of the filtering reaction box 4, the box door 18 is opened, the activated carbon 85 in the activated carbon filtering box 84 is periodically replaced through the handle 83, and therefore the filtering is more sufficient.

When in use: the method comprises the steps of placing a workbench 1 on a horizontal ground, opening a draught fan 10 to enable air in the device to circulate, enabling gas generated by a plastic melting machine 2 to enter an acid-base reaction box 3 through a flue gas pipeline I13, opening a valve 17 at the moment, adding a proper amount of acid-base neutralizing substances such as water and hydrated lime and the like through a feeding pipe 16, closing the valve 17, controlling a motor I61 to start to operate, driving a rotating shaft I62 to start to rotate by the motor I61, driving a rotating shaft II 66 to start to rotate due to the fact that a driving wheel 63 is meshed with a driven wheel 64, driving stirring blades 65 to start to stir the added hydrated lime and water, ensuring that lime slurry with qualified concentration is provided for a lime slurry pump 9, controlling the lime slurry pump 9 to start to operate, conveying the sufficiently stirred lime slurry to a slurry inlet of a slurry conveying pipe I76 through a slurry suction pipe 11 and a slurry conveying pipe II 12, and conveying the lime slurry to a spray rod 75 through the slurry, at the moment, the motor II 71 is controlled to synchronously start to rotate forwards and backwards, the motor II 71 drives the corresponding rotating shaft III 72 to rotate, the rotating shaft III 72 drives the conveyor belt 73 to start conveying, the conveyor belt 73 drives the spray rod 75 to start to slide forwards and backwards in the chute 77, lime slurry conveyed by the lime slurry pump 9 is sprayed through spray heads uniformly distributed on the spray rod 75 to ensure that acid gas generated by the plastic melting machine 2 is completely neutralized, the sprayed lime slurry falls into the bottom of the acid-base reaction box 3 to be continuously stirred to ensure that resources are recycled, activated carbon 85 is uniformly filled into the activated carbon filter box 84 through an opening in the top of the activated carbon filter box 84, the activated carbon filter box 84 is lifted 83 by a handle, the activated carbon filter box 84 is inserted into the corresponding slot 81, the box door 18 is covered, and gas which completes acid-base reaction enters the filtering reaction box 4 through the flue gas pipeline II 14, gaseous filtration pore and the incasement active carbon 85 that passes through the left and right sides of active carbon rose box 84 react, adsorb the impurity in the gas, the gas after the absorption is accomplished passes through flue gas pipeline three 15 and gets into draught fan 10, and discharge gas to the external world by the gas outlet of draught fan 10, accomplish the filtration back of melting the inside air of machine 2 to plastics, control motor one 61, motor two 71, lime slurry pump 9 and draught fan 10 stop work, open chamber door 18, utilize handle 83 to change the active carbon 85 in the active carbon rose box 84 regularly, it is more abundant to guarantee to filter.

It is to be noted that, in this embodiment, the specific model of the PLC controller 5 is siemens S7-200, the first motor 61 and the second motor 71 may be implemented by wepont electromechanical limited, dongguan, and the model is 5IK150A-CF, the lime slurry pump 9 may be implemented by shijia daer pump industry limited and the model is 1.5/1B-AH, the induced draft fan 10 may be implemented by ziboya yang ventilation equipment limited and the model is WT40, and the PLC controller 5 controls the first motor 61, the second motor 71, the lime slurry pump 9 and the induced draft fan 10 to operate by methods commonly used in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take plastic of filtration function to melt machine which characterized in that: comprises a workbench (1), a stirring and uniformly mixing structure (6), a spraying structure (7) and a filtering structure (8);

table (1): a plastic melting machine (2) is arranged on the left side of the upper surface of the workbench (1), an acid-base reaction box (3) is arranged at the center of the upper surface of the workbench (1), a smoke inlet at the center of the left side surface of the acid-base reaction box (3) is connected with a smoke outlet at the center of the right side surface of the plastic melting machine (2) through a smoke pipeline I (13), a filtering reaction box (4) is arranged on the right side of the upper surface of the workbench (1), the top end of the filtering reaction box (4) is of an open structure, a smoke inlet at the upper end of the left side surface of the filtering reaction box (4) is connected with the smoke outlet at the upper end of the right side surface of the acid-base reaction box (3) through a smoke pipeline II (14), an induced draft fan (10) is arranged at the edge of the right side of the upper surface of the workbench (1), an air inlet of the induced draft fan (10) is connected with the smoke outlet at the bottom end, a slurry inlet of the lime slurry pump (9) is connected with a through hole at the bottom end of the right side surface of the acid-base reaction box (3) through a slurry suction pipe (11), and a slurry outlet of the lime slurry pump (9) is connected with a through hole at the top end of the right side surface of the acid-base reaction box (3) through a slurry conveying pipe II (12);

stirring and uniformly mixing structure (6): the acid-base reaction box is arranged at the inner bottom end of the acid-base reaction box (3);

spray structure (7): the device is arranged at the top end inside the acid-base reaction box (3);

filter structure (8): is arranged inside the filtering reaction box (4);

wherein: still include PLC controller (5), PLC controller (5) set up in the upper surface center department of acid-base reaction case (3), and external power source is connected to the input electricity of PLC controller (5), and the output of PLC controller (5) is connected to the equal electricity of input of lime slurry pump (9) and draught fan (10).

2. The plastic melting machine with the air filtering function as claimed in claim 1, wherein: the stirring and uniformly mixing structure (6) comprises a first motor (61), a first rotating shaft (62), a driving wheel (63), a driven wheel (64), a stirring blade (65) and a second rotating shaft (66), wherein the first motor (61) is arranged at the bottom end of the front side surface of the acid-base reaction box (3), an output shaft of the first motor (61) penetrates through a shaft hole of a sealing bearing at the bottom end of the front side surface of the acid-base reaction box (3) and is provided with the first rotating shaft (62) at the rear end, the rear end of the first rotating shaft (62) is rotatably connected with the rear side surface of the acid-base reaction box (3) through the sealing bearing, the middle part of the first rotating shaft (62) is provided with the driving wheel (63), the front end and the rear end of the second rotating shaft (66) are rotatably connected with the inner wall of the acid-base reaction box (3) through the sealing bearing, the, the rear part of the first rotating shaft (62) and the front part of the second rotating shaft (66) are both provided with stirring blades (65), and the input end of the first motor (61) is electrically connected with the output end of the PLC (5).

3. The plastic melting machine with the air filtering function as claimed in claim 1, wherein: the spraying structure (7) comprises a second motor (71), a third rotating shaft (72), a conveyor belt (73), a limiting baffle ring (74), a spray rod (75), a first slurry conveying pipe (76) and a sliding groove (77), the second motor (71) is symmetrically arranged at the top end of the left side surface of the acid-base reaction box (3), output shafts of the second motor (71) are rotatably connected with the left side surface of the acid-base reaction box (3) through sealed bearings, the output shafts of the second motor (71) extend to the inside of the acid-base reaction box (3) and are provided with the third rotating shaft (72) at the right end, the three rotating shafts (72) are driven by the conveyor belt (73), the limiting baffle ring (74) is arranged at the right end of each rotating shaft (72), the spray rod (75) is arranged on the upper surface of the conveyor belt (73), nozzles uniformly distributed on the lower surface of the spray rod (75) are provided with nozzles, the sliding groove (77) is arranged at the, the spray rod (75) is connected with the sliding groove (77) in a sliding mode, a pulp inlet of the first pulp conveying pipe (76) penetrates through a through hole in the inner wall of the right side of the acid-base reaction box (3) and is connected with the second pulp conveying pipe (12), a pulp outlet of the first pulp conveying pipe (76) is connected with a pulp inlet in the upper surface of the spray rod (75), and the input end of the second motor (71) is electrically connected with the output end of the PLC (5).

4. The plastic melting machine with the air filtering function as claimed in claim 1, wherein: filtration (8) are including slot (81), fixed plate (82), handle (83), active carbon rose box (84) and active carbon (85), the symmetry evenly sets up in the inner wall of filtering reaction case (4) around slot (81), both sides are pegged graft with slot (81) that correspond around active carbon rose box (84), the top of active carbon rose box (84) is open structure, the left and right sides face of active carbon rose box (84) all is equipped with evenly distributed's filtration pore, active carbon (85) are all filled to the inside of active carbon rose box (84), the upper surface of active carbon rose box (84) all with the lower fixed surface of fixed plate (82) be connected, the upper surface of fixed plate (82) is equipped with handle (83).

5. The plastic melting machine with the air filtering function as claimed in claim 1, wherein: still include filling tube (16) and valve (17), the right flank feed inlet department of acid-base reaction box (3) is equipped with filling tube (16), and the body inside of filling tube (16) is established ties and is had valve (17).

6. The plastic melting machine with the air filtering function as claimed in claim 1, wherein: the filter box is characterized by further comprising a box door (18), the left side of the upper surface of the box door (18) is hinged to the right side of the top end of the filter reaction box (4) through a hinge, and the box door (18) corresponds to the opening position of the filter reaction box (4).