CN105397939B - A kind of shredder - Google Patents
A kind of shredder Download PDFInfo
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- CN105397939B CN105397939B CN201510920913.XA CN201510920913A CN105397939B CN 105397939 B CN105397939 B CN 105397939B CN 201510920913 A CN201510920913 A CN 201510920913A CN 105397939 B CN105397939 B CN 105397939B
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- China
- Prior art keywords
- shredder
- cutter
- waste mulching
- vibrating screen
- hopper
- Prior art date
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- 239000002699 waste material Substances 0.000 claims abstract description 53
- 239000004033 plastic Substances 0.000 claims abstract description 42
- 229920003023 plastic Polymers 0.000 claims abstract description 42
- 238000012216 screening Methods 0.000 claims abstract description 23
- 239000002985 plastic film Substances 0.000 claims description 26
- 229920006255 plastic film Polymers 0.000 claims description 26
- 239000012634 fragment Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 238000012797 qualification Methods 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0224—Screens, sieves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0227—Vibratory or shaking tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The present invention discloses a kind of shredder, is related to plastics recovery technical field, to improve the qualification rate of the plastic flakes obtained after waste mulching film is shredded.The shredder includes feed mechanism and shredder ontology, and shredder ontology includes the shell with feed hopper and discharge port, and the cutter for tearing up waste mulching film, and the driving device for driving cutter to work are equipped in shell；Feed mechanism includes lift unit and the feeding mechanism that can be elevated unit lifting, and feeding mechanism is equipped with the vibrations screening unit for removing contained silt in waste mulching film.Since vibrations screening unit can will be screened into the waste mulching film before feed hopper, to the silt that removal wherein contains, increase the contact area of waste mulching film and the blade on cutter, to improve the qualification rate of the plastic flakes obtained after waste mulching film is shredded.Shredder provided by the invention is used for waste mulching film recycling field.
Description
Technical Field
The invention relates to the technical field of plastic recovery, in particular to a shredder.
Background
The shredder is equipment for smashing raw materials to enable the raw materials to be smaller in size, is mainly used for the industry of plastic recycling and regeneration, and is used for shredding waste plastics into small pieces to facilitate subsequent recycling.
At present, a common shredder can shred waste plastics into qualified plastic fragments, but for waste mulching films recovered from field lands, due to the fact that the waste mulching films contain a large amount of silt, the waste mulching films are prevented from being in contact with blades in a double-shaft shredder, and the qualification rate of the plastic fragments obtained after the waste mulching films are shredded is low.
Disclosure of Invention
The invention aims to provide a shredder to improve the qualification rate of plastic fragments obtained after shredding waste mulching films.
In order to achieve the above purpose, the invention provides the following technical scheme:
a shredder comprises a feeding mechanism and a shredder body, wherein the shredder body comprises a shell with a feeding hopper and a discharge port, and a cutter for shredding waste mulching films and a driving device for driving the cutter to work are arranged in the shell; wherein,
feed mechanism includes the hoisting unit and can by the feed mechanism that the hoisting unit promoted, be equipped with the vibrations screening unit that is arranged in getting rid of the silt that contains in the old and useless plastic film on the feed mechanism.
Preferably, the vibration screening unit includes the first reciprocating sieve that is used for once sieving to old and useless plastic film and is used for carrying out the second reciprocating sieve that sieves to old and useless plastic film again.
Preferably, the mesh aperture of the first vibrating screen is 10mm-30mm, and the mesh aperture of the second vibrating screen is 1mm-10 mm.
Preferably, the feeding mechanism comprises a support frame, and a first fixing piece and a second fixing piece which are arranged on the support frame; the first fixing piece is connected with the first vibrating screen, and the second fixing piece is connected with the second vibrating screen; be equipped with the arm that is used for shifting the old and useless plastic film on the first reciprocating sieve to the second reciprocating sieve on and fills the old and useless plastic film on the second reciprocating sieve into the feeder hopper on first reciprocating sieve or the second reciprocating sieve.
Further, the feeding mechanism also comprises a height measuring instrument and a control unit connected with the height measuring instrument;
the height measuring instrument is used for measuring the height difference between the second vibrating screen and the inlet of the feed hopper;
the control unit is used for controlling the mechanical arm to fill the waste mulching film on the second vibrating screen into the feeding hopper when the height difference between the second vibrating screen and the inlet of the feeding hopper is 0.
Preferably, the discharge hole is provided with a sampling hole for sampling and detecting the plastic fragments; the discharge port is respectively connected with a discharge pipeline and a conveying pipeline for conveying the plastic fragments at the discharge port to a feed hopper; the one end that ejection of compact pipeline and discharge gate are relative is connected with first valve, the one end that pipeline and discharge gate are relative is equipped with the second valve.
Preferably, the discharge gate even has the ejection of compact pipeline respectively and will the pipeline of feeder hopper is carried to the plastics piece of discharge gate, just the ejection of compact pipeline is connected with the screen cloth that is used for making qualified plastics piece pass through with the one end that the discharge gate is relative.
Preferably, the feed hopper is funnel-shaped; and the small opening end of the feed hopper is connected with the shell.
Preferably, the shell comprises a tearing part and a material blocking part arranged at the top of the tearing part; the discharge port is arranged at the bottom of the tearing part, the cutter is arranged in the tearing part, and the feed hopper is connected with the material blocking part; the material blocking part is provided with a plurality of guide channels for enabling the waste mulching films to enter the tearing part.
Preferably, the cutter includes parallel arrangement's first arbor and second arbor, and is equipped with a plurality of blade discs that have the movable blade on the first arbor, is equipped with the blade disc of a plurality of stationary blades on the second arbor, first arbor hub connection is used for driving first arbor pivoted first drive arrangement, be connected with on the second arbor and be used for driving second arbor pivoted second drive arrangement.
Compared with the prior art, the shredder provided by the invention has the following beneficial effects:
in the shredder provided by the invention, a plurality of cutters for shredding waste mulching films are arranged in a shell; therefore, when the waste mulching films enter the shell from the feed hopper, the blades on the cutter can shred the waste mulching films into plastic fragments; moreover, the feeding mechanism adopted by the shredder comprises the lifting unit and the feeding mechanism which can be lifted by the lifting unit, and the feeding mechanism is provided with the vibration screening unit which can screen the waste mulching films before feeding to remove silt contained in the waste mulching films, so that after the waste mulching films with the silt removed enter the shell from the feeding hopper, the contact between the waste mulching films and the blades on the cutter cannot be hindered by the silt, and the qualification rate of plastic fragments obtained by shredding the waste mulching films is greatly improved.
In addition, in the waste mulching film shredder provided by the invention, the feeding mechanism comprises the lifting unit, and the lifting unit can change the height of the feeding mechanism according to actual needs, so that the waste mulching film shredder is convenient to feed and discharge.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a shredder body in an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic structural diagram of a loading mechanism in an embodiment of the present invention;
FIG. 5 is a flow chart of automated feeding in an embodiment of the present invention;
FIG. 6 is a schematic view of a first structure of a discharge hole in an embodiment of the present invention;
FIG. 7 is a schematic view of a second structure of a discharge hole in the embodiment of the present invention;
reference numerals:
1-shell, 10-guide channel;
11-feed hopper, 12-discharge port;
2-cutter, 21-first cutter shaft;
22-a second cutter shaft, 3-a lifting unit;
4-feeding mechanism, 41-supporting frame;
411-first mount, 412-second mount;
42-mechanical arm, 5-vibration screening unit;
51-a first shaker, 52-a second shaker;
6-a discharge pipeline, 60-a first valve;
7-conveying pipeline, 70-second valve.
Detailed Description
To further illustrate the shredder provided by embodiments of the present invention, reference is made to the accompanying drawings, which form a part hereof.
Referring to fig. 1 and 3, a shredder according to an embodiment of the present invention includes a feeding mechanism and a shredder body, wherein the shredder body includes a housing 1 having a feeding hopper 11 and a discharge outlet 12; a cutter 2 for shredding the waste mulching films is arranged in the shell 1, and the cutter 2 is connected with a driving device for driving blades on the cutter 2 to shred the waste mulching films; wherein,
referring to fig. 4, the feeding mechanism includes a lifting unit 3 and a feeding mechanism 4 capable of being lifted by the lifting unit 3, and the feeding mechanism 4 is provided with a vibrating screening unit 5 for removing silt contained in the waste mulching film.
Before working, the cutter in the shredder of the embodiment runs for 15min in an idle load manner so as to ensure that the shredder can be normally used, if abnormal conditions are found, for example, abnormal sound exists in the shredder, the shredder is stopped in time, and the shredder is started to run after the abnormal conditions are relieved; then put old and useless plastic film in vibrations screening unit 5, make vibrations screening unit 5 carry out vibrations screening to old and useless plastic film, so that the silt that mix with in the old and useless plastic film can be sieved by vibrations screening unit 5 and remove, when vibrations screening unit 5 sieves silt, hoisting unit 3 promotes feed mechanism 4 and the vibrations screening unit 5 of establishing on feed mechanism 4 to feeder hopper 11 department, when reacing the feeder hopper, feed mechanism sends the old and useless plastic film on vibrations screening unit 5 to the casing from feeder hopper 11, with the cutter in the casing shredding into the plastics piece, the ejection of compact is followed from discharge gate 12 to the plastics piece. In addition, when the shredder is stopped, the cutter is operated for 15 minutes under the condition that the waste mulching film is not shredded, so that material blockage when the shredder is started next time is prevented.
According to the working process of the shredder provided by the embodiment, the plurality of cutters 2 are arranged in the shell 1, so that waste mulching films can be shredded into plastic fragments by the blades on the cutters 2 after entering the shell 1 from the feed hopper 11; moreover, the feed mechanism that the shredder of this embodiment adopted includes hoisting unit 3 and the feed mechanism 4 that can be promoted by hoisting unit 3, be equipped with vibrations screening unit 5 on feed mechanism 4 in order to screen old and useless plastic film before the feeding, get rid of silt that contains wherein, consequently, after the old and useless plastic film that gets into the casing from feeder hopper 11 when getting rid of silt, the contact of the blade on old and useless plastic film and the cutter 2 can not receive the hindrance of silt, has improved the qualification rate of old and useless plastic film through the plastics piece that the shredding obtained greatly.
In addition, among the old and useless plastic film shredder that this embodiment provided, contain lifting unit 3 among the feed mechanism, lifting unit 3 can change the height of feed mechanism 4 according to actual need, has made things convenient for to feed and feeding.
Please refer to fig. 2, the housing 1 in the above embodiment may be divided into a tearing portion and a material blocking portion disposed at the top of the tearing portion; the discharge port 12 is arranged at the bottom of the shredding part, the cutter 2 is arranged in the shredding part, and the feed hopper 11 is connected with the material blocking part; the material blocking part is provided with a plurality of guide channels 10 for enabling the waste mulching films to enter the tearing part, and the guide channels are of inclined plane structures so as to further facilitate the waste mulching films to enter the tearing part. Because keep off material portion and feeder hopper 11 and link to each other, and keep off and be equipped with a plurality of messenger's old and useless plastic film on the material portion and get into the direction passageway 10 of tearing the portion, old and useless plastic film gets into from feeder hopper 11 like this and keeps off the material portion after, can get into along direction passageway 10 and tear the portion to make the carrying out of tearing that old and useless plastic film can be orderly tear, improve the efficiency of tearing, increase the qualification rate of the plastic chip that obtains.
In addition, the shape of the feeding hopper 11 is various, and in order to increase the feeding speed, please refer to fig. 1, the feeding hopper is arranged in a funnel shape, and the small opening end of the feeding hopper 11 is connected with the housing 1. Meanwhile, the specific form adopted by the cutter 2 of the above embodiment is also diversified, for example, the cutter 2 shown in fig. 2 may include a first cutter shaft 21 and a second cutter shaft 22 which are arranged in parallel, and the first cutter shaft 21 is provided with a plurality of cutter heads with movable blades, and the second cutter shaft 22 is provided with a plurality of cutter heads with fixed blades; the first cutter shaft 21 is connected with a first driving device for driving the first cutter shaft 21 to rotate, and the second cutter shaft 22 is connected with a second driving device for driving the second cutter shaft 22 to rotate. The rotating diameter of the cutter head on the cutter 2 can be 320mm, the thickness of the movable blade is 30mm, the number of the movable blades is 40, and the rotating speed of the movable blades is 10/11.5 r/min. Moreover, those skilled in the art will appreciate that the diameter of the cutter head and the number of cutter heads can be set according to practical situations, and are not limited to the disclosure of the present embodiment.
It should be noted that, in order to prevent the problem that the fixed blade and the movable blade bite the knife, the gap between the movable blade and the fixed blade adjacent to the movable blade needs to be ensured to be 0.4 mm-0.5 mm; the blade is made of Cr12Mo1V1The alloy (Japanese material brand SKD-11) steel is refined through the procedures of forging, normalizing, mechanical rough machining, thermal refining, mechanical semi-finishing, vacuum quenching, high-temperature tempering, finishing and the like, and has sufficient strength and wear resistance.
Specifically, the number of the driving devices in the above embodiments corresponds to the number of the knife shafts, and the ac horizontal motor can be generally selected from Y250M-4, the rotation speed 1480r/min, the voltage 380V/50HZ/3P, and the power 55KW, but is not limited thereto.
It should be noted that, the specific structure of the vibrating screening unit 5 in the feeding mechanism in the above embodiment is many, and in order to thoroughly screen out the silt contained in the waste mulching film before feeding, please refer to fig. 4, the vibrating screening unit 5 specifically includes a first vibrating screen 51 for primarily screening the waste mulching film, and a second vibrating screen 52 for secondarily screening the waste mulching film; in order to sieve the waste mulching films on the first vibrating screen 51 for the second time, the first vibrating screen 51 is generally connected with the second vibrating screen 52 through a conveyor belt, and after the waste mulching films are sieved for the first time through the first vibrating screen 51, the waste mulching films after the first sieving can be transferred to the second vibrating screen 52 to continuously sieve the silt mixed in the waste mulching films. Through twice sieving, the silt contained in the waste mulching film is basically sieved out, the obstruction between the waste mulching film and the blade on the cutter is further reduced, and therefore the qualification rate of plastic fragments is improved. The mode of transferring the waste mulching films after primary sieving to the second vibrating screen 52 is various, for example, a common mechanical arm is used for grabbing the waste mulching films after primary sieving, and the waste mulching films are transferred to the second vibrating screen 52 for secondary sieving, and the mechanical arm can be arranged on the first vibrating screen 51 or the second vibrating screen 52.
Referring to fig. 4, the feeding mechanism 4 in the above embodiment includes a supporting frame 41, and a first fixing member 411 and a second fixing member 412 disposed on the supporting frame 41; the first fixed part 411 is connected with the first vibrating screen 51, and the second fixed part 412 is connected with the second vibrating screen 52; the second vibrating screen 52 is provided with a mechanical arm 42, and the mechanical arm 42 can be arranged on the second vibrating screen 52 and also can be arranged on the first vibrating screen; the mechanical arm 42 can transfer the waste mulching films on the first vibrating screen 51 to the second vibrating screen 52, and can also fill the waste mulching films on the second vibrating screen 52 into the feed hopper 11. When the 5 vibrations screening unit that promote unit 3 set up on with feed mechanism 4 promoted to feeder hopper 11 like this, arm 42 just can snatch the old and useless plastic film that passes through the secondary and sieve on the second reciprocating sieve 52 to in filling the feeder hopper with old and useless plastic film, avoided the cost that manual operation brought to improve.
In order to realize the automatic feeding of the feeding mechanism, please refer to fig. 5, the feeding mechanism of the above embodiment includes a height measuring instrument and a control unit connected to the height measuring instrument; the height measuring instrument is used for measuring the height difference between the second vibrating screen and the inlet of the feed hopper; the control unit is used for controlling the mechanical arm 42 to fill the waste mulching films on the second vibrating screen 52 into the feed hopper 11 when the height difference between the second vibrating screen and the inlet of the feed hopper is 0. Because height measurement appearance and the control unit have been added at feed mechanism for the control unit can receive the difference in height information between the entry of second reciprocating sieve and feeder hopper that height measurement appearance sent in real time, and when the difference in height between the entry of second reciprocating sieve and feeder hopper was 0, control unit can control arm 42 and fill into feeder hopper 11 with the old and useless plastic film on the second reciprocating sieve, has realized the automation of feeding.
As for the mesh aperture of well first reciprocating sieve 51 and the mesh aperture of second reciprocating sieve 52 in the above-mentioned embodiment specifically can be according to big-first little principle, and the mesh aperture of first reciprocating sieve 51 is than the mesh aperture of second reciprocating sieve 52 greatly promptly, just can sieve away the great silt of particle diameter in the old and useless plastic film like this when once sieving, and then follow-up when sieving for a second time, can sieve away the less silt of particle diameter in the old and useless plastic film, realize that the old and useless plastic film sieves in grades. For example, the first vibrating screen 51 may be defined to have a mesh size of 10mm to 30mm, and the second vibrating screen 52 may be defined to have a mesh size of 1mm to 10mm, but not limited thereto.
In addition, in order to better understand whether the particle diameter of the plastic fragments that obtain after the old and useless plastic film is torn up is qualified, can carry out following two kinds of settings to the structure of discharge gate department, wherein the qualification rate of plastic fragments can be guaranteed to arbitrary homoenergetic.
The first method comprises the following steps: referring to fig. 6, a sampling hole for sampling and detecting plastic fragments is formed on the discharge port 12; therefore, the operator can sample and detect the plastic fragments at any time in the working process so as to judge whether the granularity of the plastic fragments is qualified. In addition, in order to improve the qualified rate of the plastic fragments, the discharge port 12 is respectively connected with the discharge pipeline 6 and the conveying pipeline 7 for conveying the plastic fragments at the discharge port 12 to the feed hopper 11, a first valve 60 is arranged at one end of the discharge pipeline 6 opposite to the discharge port 12, and a second valve 70 is arranged at one end of the conveying pipeline 7 opposite to the discharge port; if the particle size of the plastic fragments is detected to be unqualified, the unqualified plastic fragments can be shredded again by closing the first valve 60 and opening the second valve 70 to return to the feed hopper 11 through the conveying pipeline 7; if qualified, the second valve 70 is closed, and the first valve 60 is opened, so that the qualified plastic chips are discharged through the discharge pipe 6.
And the second method comprises the following steps: referring to fig. 7, the discharge port 12 is connected to a discharge pipe 6 and a conveying pipe 7 for conveying plastic chips from the discharge port to the feed hopper 11, and one end of the discharge pipe 6 opposite to the discharge port 12 is connected to a screen for passing qualified plastic chips. Because the screen is arranged at the end of the discharge pipeline 6 opposite to the discharge port 12, as long as unqualified plastic fragments are deposited on the screen, the plastic fragments can easily enter the conveying pipeline 7 and return to the feed hopper 11 for re-shredding; and qualified plastic chips are discharged from the discharge pipeline 6.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A shredder is characterized by comprising a feeding mechanism and a shredder body, wherein the shredder body comprises a shell with a feeding hopper and a discharging port, and a cutter for shredding waste mulching films and a driving device for driving the cutter to work are arranged in the shell; wherein,
the feeding mechanism comprises a lifting unit and a feeding mechanism capable of being lifted by the lifting unit, and the feeding mechanism is provided with a vibration screening unit for removing silt contained in the waste mulching film;
the cutter comprises a first cutter shaft and a second cutter shaft which are arranged in parallel, a plurality of cutter discs with movable blades are arranged on the first cutter shaft, a plurality of cutter discs with fixed blades are arranged on the second cutter shaft, the first cutter shaft is connected with a first driving device for driving the first cutter shaft to rotate, and a second driving device for driving the second cutter shaft to rotate is connected to the second cutter shaft; the clearance between the movable blade and the adjacent fixed blade is 0.4 mm-0.5 mm;
the discharge hole is provided with a sampling hole for sampling and detecting the plastic fragments; the discharge port is respectively connected with a discharge pipeline and a conveying pipeline for conveying the plastic fragments at the discharge port to a feed hopper; one end of the discharge pipeline, which is opposite to the discharge port, is connected with a first valve, and one end of the conveying pipeline, which is opposite to the discharge port, is provided with a second valve;
or, the discharge gate even has ejection of compact pipeline respectively and will the pipeline of feeder hopper is carried to the plastic chip of discharge gate, just the ejection of compact pipeline is connected with the screen cloth that is used for making qualified plastic chip to pass through with the one end that the discharge gate is relative, and the unqualified plastic chip of deposit on the screen cloth can get into pipeline and get back to the feeder hopper and tear the bits of broken glass again.
2. The shredder according to claim 1, wherein the vibrating screen unit comprises a first vibrating screen for primary screening of the used mulching films and a second vibrating screen for secondary screening of the used mulching films.
3. A shredder according to claim 2, wherein said first screen has a mesh size of 10mm to 30mm and said second screen has a mesh size of 1mm to 10 mm.
4. A shredder according to claim 2 or 3, wherein the feeding mechanism comprises a support frame, and first and second mounts provided on the support frame; the first fixing piece is connected with the first vibrating screen, and the second fixing piece is connected with the second vibrating screen; be equipped with the arm that is used for shifting the old and useless plastic film on the first reciprocating sieve to the second reciprocating sieve on and fills the old and useless plastic film on the second reciprocating sieve into the feeder hopper on first reciprocating sieve or the second reciprocating sieve.
5. A shredder according to claim 4, characterised in that the feeding mechanism further comprises a height measuring gauge and a control unit connected to the height measuring gauge;
the height measuring instrument is used for measuring the height difference between the second vibrating screen and the inlet of the feed hopper;
the control unit is used for controlling the mechanical arm to fill the waste mulching film on the second vibrating screen into the feeding hopper when the height difference between the second vibrating screen and the inlet of the feeding hopper is 0.
6. A shredder according to claim 1, characterised in that the feed hopper is funnel-shaped; and the small opening end of the feed hopper is connected with the shell.
7. The shredder of claim 1 wherein the housing includes a shredder portion and a dam portion disposed at a top of the shredder portion; the discharge port is arranged at the bottom of the tearing part, the cutter is arranged in the tearing part, and the feed hopper is connected with the material blocking part; the material blocking part is provided with a plurality of guide channels for enabling the waste mulching films to enter the tearing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920913.XA CN105397939B (en) | 2015-12-10 | 2015-12-10 | A kind of shredder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920913.XA CN105397939B (en) | 2015-12-10 | 2015-12-10 | A kind of shredder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105397939A CN105397939A (en) | 2016-03-16 |
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