CN2841302Y - Waste-plastic regeneration granule-making machine - Google Patents

Abstract

The utility model relates to a waste plastic regeneration granulator which comprises a vented extruder (1) and a cutting granulator (3) which are orderly connected, wherein a filter (2) can be arranged between the vented extruder (1) and the cutting granulator (3), and a screw conveyer (4), a dryer (5) and a wind conveying system (6) can be connected behind the cutting granulator (3). The utility model not only can be used for producing molding granules which have the advantages of homogeneous granularity, smooth exterior and high quality but also can be used for reclaiming various classes of waste plastics and wet materials.

Description

Regeneration pelletizer for worn-out plastic

Technical field

The utility model relates to the equipment technical field of technics of reclaim of plastic waste regeneration being made plastic grain.

Background technology

At present, the regeneration pelletizer for worn-out plastic of selling on the market is most to be common comminutor.Its structure mainly adopts the structure of general extruder+plain filter+die head+cooling device+breaker; The perhaps air-cooled structure of extruder+plain filter+die head+earnestly.The filtering surface of the plain filter of these two kinds of structures is less, can not detect material automatically and press, and can not accurately judge whether to need to change filter screen, impurity screening poor effect, the difficult quality control of the plastic pellet that reproduces.In addition, the comminutor of above-mentioned first kind of structure, plastics pull into strip by die head and enter cooling device, are to be broken into particle after cooling, and the cut surface of particle is rough regular, and particle length is also wayward; The comminutor of second kind of structure, plastics are that the particle of chopping can fly in airduct with high velocity air, hits desultorily on tube wall, and the plastic pellet that does not cool off is fully as yet hit into the flat particle that all size differs with the air cooling.Plastic pellet granularity, shape that the comminutor of two kinds of structures reproduces are all inhomogeneous, second-rate, influence subsequent production and use.And owing to the not extruder of exhaust that is that is adopted, so can not process wet feed.

Summary of the invention

The purpose of this utility model provides a kind of epigranular, smooth high-quality moulding particle of external form can produced for the deficiency that solves above-mentioned prior art existence just, and the regeneration pelletizer for worn-out plastic of recyclable multiclass waste or used plastics and wet feed.

The purpose of this utility model is achieved by the following technical solution.

Regeneration pelletizer for worn-out plastic comprises the vented extruder and the cutting comminutor that are linked in sequence.

The utility model also is provided with filter between vented extruder and cutting comminutor; Also be connected with conveying worm, drying machine and blast system in cutting comminutor back; Described vented extruder comprises the machine barrel of being with steam vent and is arranged at the interior exhaust screw rod of machine barrel, described exhaust screw rod comprises the first rank screw rod and the second rank screw rod, the first rank screw rod comprises feeding section, reducing compression section, metering section and mixing section, also comprises the pressure regulation section that is right after mixing section; The second rank screw rod comprises exhaust section, sudden change section, and the metering section that is right after; The length of exhaust screw rod and the ratio of external diameter are 35～45; The second rank screw rod is 0.5～0.8 with the length ratio of the first rank screw rod; Mixing section is formed by two sections, and first section is the interrupted shape thread segment that screw thread is interrupted, and second section is the annular groove that the pin shape is set on bottom bar; The length of the second rank screw metering section and the ratio of external diameter are 6～13; The position of corresponding pressure regulation section is provided with pressure regulator valve on extruder barrel; Described filter comprises that feed liquid passage body and symmetry are connected in the upper piston body and the lower piston body of passage body both sides; Be horizontally arranged with relative two " Y " types or T-shape feed liquid passage in the passage body, a passage leads to liquor inlet and last lower piston respectively, and another passage leads to material liquid outlet and last lower piston respectively; The cross section is arranged at for the piston of shape with a tight waist in the cylindrical cavity of piston body plunger shaft is divided into left and right cavity, the nozzle that is arranged on the piston is communicated with left and right sides cavity, piston is connected with hydraulic stem, symmetry order is equipped with filter, filter screen and gripper shoe in left and right piston cavity, on piston and piston body, offer with left and right plunger shaft with lead to " Y " type of material liquid outlet or the path of T-shape feed liquid channel connection; On piston body, offer respectively feed liquid slag in the left and right plunger shaft is drawn draw the slag road; Passage body, upper piston body and lower piston body are provided with heater; Described cutting comminutor includes die head, is arranged at the sump body and the cylindrical shell that is connected with the sump body of die head outside, between sump body and cylindrical shell, be provided with nozzle, in cylindrical shell, be provided with rotating shaft, the front end of rotating shaft is equipped with the tool rest that is used to install cutting knife, discharge opening on the cutting knife subtend die head, the rear end of rotating shaft connects by coupling sleeve and motor; Cylindrical shell is provided with observation window; Connected mode between sump body and the cylindrical shell is, a side is connected through the hinge, and opposite side connects by hasp; Coupling sleeve is provided with knife adjusting device, and the overcoat that the cantilever of knife adjusting device passes coupling sleeve and rotating shaft connects.

The utility model is rational in infrastructure, has improved the continuity of device fabrication greatly, can improve the output of plastic pellet greatly.

The structure of the vented extruder that is adopted, when making waste or used plastics pass through feeding section, compression section, metering section and mixing section, under the compression section, melted gradually, mixed and the shearing at metering section, after being further plasticized, mixing section enters the pressure regulation section, by regulating the area of plastics circulation, can regulate the plastics that enter exhaust section in the pressure regulation section, prevent that plastics from emerging from the exhaust outlet of machine barrel.Plastics enter exhaust section by after being arranged on the exhaust outlet discharge aqueous vapor and analyte on the machine barrel, are compacted again in the sudden change section, and after further mixing, shear at metering section, by metering section, quantitative, level pressure is clamp-oned in the follow-up equipment.Because screw slenderness ratio is bigger, under high speed rotating, the time of staying lengthening of plastics in screw rod helps the plasticizing of plastics.The structure of the mixing section that is adopted makes screw rod under high speed rotating, unfused plastics can be mixed and shearing further, plastifies.The second rank screw rod designs with the length ratio of the first rank screw rod, and the plasticizing of plastics and exhaust effect all can effectively be improved.The draw ratio design of the second rank screw metering section, even make the second long rank screw metering section when forefront pressure is too high, the adverse current of materials flow is also very little.Thereby reduce the possibility of overflow mouth overflow, and output is improved.Set pressure regulation section can be regulated the corresponding pressure regulator valve of installing on machine barrel, control the extrusion capacity of the first rank screw rod plastic, makes it to mate with the extrusion capacity of the second rank screw rod, has further reduced the possibility of overflow mouth overflow.This extruder is worked under high speed, and plasticizing quality is higher, and the output height is widely applicable, can be used for the recycling of various waste or used plastics siccatives such as PE, PP, PET, PS, PC and wet feed.

The structure of filter that is adopted, the pressure that can be subjected to by set control system monitoring filter screen, and in time start hydraulic work system, clean liquation by in running order filter screen outflow, the screen pack that flows into the opposite from the back side carries out backwash to it, and the feed liquid slag that is trapped in the filter screen front is gone out body.When a filter screen recoiled cleaning, its excess-three filter screen still was in the filtration state, and therefore, in cleaning process, the feed pressure that filter screen is subjected to increases minimum.Prevent that because of hypertonia influences extruder output the impure amount of feed liquid after avoiding filtering is too high.Because filter screen obtains flushing, clean-up performance is significantly improved, and can prolong filter screen service life greatly, reduces and changes filter screen.Both made when being the filter screen of need changing in the piston body, another piston body still can operate as normal, realizes not shutting down draping fully.Structure of the present utility model also makes in normal working conditions, the filtering surface expansion of feed liquid is twice, symmetrically arranged filter screen support plate makes feed liquid to apply identical pressure from both sides to filter screen, and equilibrium is applied to the pressure on the piston, thereby reduces the wearing and tearing of piston and filter screen.Set heater makes passage body and piston body keep uniform temperature in case the feed temperature of fluid stopping reduces and lowers mobile.

Discharge opening on the die head that the cutting comminutor that is adopted passes through the plastics of fusion is split into the multiply materials flow.When plastics when discharge opening is extruded, the cutting knife of rotation cuts into fine particle to plastics at a high speed.And under action of centrifugal force, plastic pellet is thrown in the water ring on the cylinder cooling by throwing and solidifies.Along with flowing of water ring, the plastic pellet of curing flows out cylindrical shell with water.Set observation window can clearly be seen the measuring phase of cutting knife in regulating the process of cutting knife, and checks every whether cutting knife to be pressed on the die head equably.Simultaneously, can see clearly whether the water ring of barrel forms, avoid water to flow on the die head, reduce die head temperature, the accident that the plastics that cause die head to be solidified block.Sump body that is adopted and the draw bail between the cylindrical shell make die head and shell portion be easy to open, and are convenient to change fast cutting knife, reduce downtime.Set knife adjusting device, the distance that can regulate cutting knife and die head makes cutting knife be pressed on the die head with less pressure, reduces the wearing and tearing of die head and cutting knife, also makes the distortion minimum of cutting knife, increases the service life.The plastic pellet uniform particles that this comminutor reproduces, external form is smooth regular, and quality is good.

Further set forth content of the present utility model below in conjunction with Figure of description.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is a vertical view of the present utility model;

Fig. 3 is the structural representation of the vented screw of vented extruder;

Fig. 4 is the schematic cross-section that vented extruder cooperates with machine barrel and pressure regulator valve at pressure regulation section screw rod;

Fig. 5 is the structure of filter schematic diagram;

Fig. 6 is the A-A cutaway view of Fig. 5;

Fig. 7 is the right view of Fig. 5;

Fig. 8 is the schematic diagram of filter piston normal operating conditions;

Fig. 9 is the schematic diagram that the right filter screen of filter lower piston body is in the backwash state;

Figure 10 is the schematic diagram that filter lower piston body left side filter screen is in the backwash state;

Figure 11 is that the master of cutting comminutor looks cutaway view;

Figure 12 is the vertical view of Figure 10.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model is made up of the vented extruder 1 that is linked in sequence, filter 2, cutting comminutor 3, conveying worm 4, drying machine 5 and blast system 6.

As shown in Figure 3, vented extruder 1 comprises the first rank screw rod A and the second rank screw rod B, and the first rank screw rod A comprises feeding section A1, compression section A2, metering section A3 and mixing section A4, also comprises the pressure regulation section A5 that is right after mixing section; The second rank screw rod B comprises exhaust section B1, sudden change section B2, and the metering section B3 that is right after.The length of screw rod and the ratio of external diameter are 35～45, and present embodiment selects 40; The second rank screw rod B is 0.5～0.8 with the length ratio of the first rank screw rod A, and present embodiment selects 0.7; Mixing section A4 forms by two sections, and first section is the interrupted shape thread segment that screw thread 12 is interrupted, and second section is the annular groove 13 that the pin shape is set on bottom bar; The length of the second rank screw metering section B3 and the ratio of external diameter are 6～13, and present embodiment selects 10; As shown in Figure 4, the position of corresponding pressure regulation section A5 is provided with pressure regulator valve 15 on extruder barrel 14.

As Fig. 5, Fig. 6, shown in Figure 7, filter 2 comprises that feed liquid passage body 16 and symmetry are connected in the upper piston body 17 and the lower piston body 18 of passage body both sides; Be horizontally arranged with relative two " Y " types or T-shape feed liquid passage 19 and 20 in the passage body, present embodiment is " Y " type passage, and passage 19 leads to liquor inlet and upper and lower piston respectively, and passage 20 leads to material liquid outlet and upper and lower piston respectively; The cross section is arranged at for the piston 21 of shape with a tight waist in the cylindrical cavity of piston body plunger shaft is divided into left and right cavity, the nozzle 22 that is arranged on the piston is communicated with left and right cavity, piston is connected with hydraulic stem 23, and hydraulic system can promote piston and move forward and backward in plunger shaft.The symmetry order is equipped with filter 24, filter screen 25 and gripper shoe 26 in left and right piston cavity,, filter screen 25 is made of 3～5 metafiltration nets.On piston and piston body, offer path 27,27 that left and right plunger shaft is communicated with " Y " type passage 20 that leads to material liquid outlet '; On piston body, offer respectively feed liquid slag in the left and right plunger shaft is drawn draw slag road 28,28 '; Passage body 16, upper piston body 17 and lower piston body 18 are provided with heater 29.

As Figure 10, shown in Figure 11; cutting comminutor 3 includes die head 30, is arranged at the sump body 31 and the cylindrical shell 33 that is connected with the sump body of die head outside; die head 30 and sump body 31 usefulness bolts link together; maintain static; between sump body and cylindrical shell, be provided with nozzle 34; connected mode between sump body 31 and the cylindrical shell 33 is, a side connects by hinge 42, and opposite side connects by hasp 43.Be provided with rotating shaft 35 in cylindrical shell, the front end of rotating shaft 35 is equipped with the tool rest 37 that is used to install cutting knife 36, the discharge opening 38 on the cutting knife subtend die head, and the rear end of rotating shaft connects by coupling sleeve 39 and motor 40.Cylindrical shell is provided with observation window 41.Coupling sleeve 39 is provided with knife adjusting device 44, and the overcoat 46 that the cantilever 45 of knife adjusting device passes coupling sleeve and rotating shaft 35 connects.

The course of work is as follows: the waste or used plastics particle enters the feeding section A1 of the first rank screw rod A in the machine barrel by the charging aperture of extruder, screw rod promotes forward at the following plastics of rotation, in pushing course forward, plastics are compacted and enter compression section A2, and plastics are melted under compression gradually.Plastics after the fusing are squeezed into metering section A3.Metering section A3 mainly makes the mixed and shearing of plastics.And clamp-on mixing section A4 with certain amount, further make unfused plastics plasticizing.During by pressure regulation section A5, can regulate the logical area of stream of plastic, thereby the plastic flow of regulating the exhaust section B1 that enters the second rank screw rod B prevents that the plastics that enter exhaust section from emerging from the exhaust outlet on the machine barrel by being arranged on pressure regulator valve 2 on the machine barrel.Plastics are after exhaust section B1 discharges aqueous vapor and analyte.B2 is compacted again in the sudden change section, and after further mixing, shear at metering section, by metering section B3, quantitative, level pressure is clamp-oned in the filter 2, as Fig. 8, shown in Figure 6, in normal operating conditions.Feed liquid flows through along the direction of arrow among Fig. 8, in Fig. 6 the gripper shoe 26 of piston 21 bilateral symmetry settings, filter screen 25, filter 24, enter internal piston again through path 27,27 ' flow out by exit passageway 20.When the feed pressure at the screen pack place, piston right side in the piston body 18 reaches setting value instantly, being arranged on sensor on the feeding-passage 19 front end extruders detects pressure signal and is transferred to control system, control system primer fluid pressing system, enter the backwash state, as shown in Figure 9, feed liquid will enter through filter screen from the left channel of lower piston, the right side is charging no longer, under pressure, feed liquid will be spurting when flowing through nozzle 22 outlets, and wash the filter and the filter screen on right side at a terrific speed, thus reach the purpose of backwash, be rinsed the feed liquid slag that gets off and be discharged from body along drawing slag road 28.Backwash process shown in Figure 10 is then just in time opposite with Fig. 9.The backwash of upper piston also is as a same reason.Because the pressure at filter screen place is all the time than high before the backwash after the backwash, therefore, after the certain number of times of backwash, when backwash is in the pressure of firm flushing when intact near setting value, promptly need change screen pack.The feed liquid that flows out from filter then flows into cutting comminutor 3.Adjust the duty of cutting comminutor in advance, the Adjusting bolt Adjusting screw 48 on the rotation knife adjusting device transverse screw 47 moves ahead by cantilever 45 and the overcoat 46 promotion rotating shafts that are enclosed within the rotating shaft 35, makes cutting knife 36 be affixed by the end face of die head 30.Cooling water is injected sump 50 from water inlet 49, spray to cylinder inboard wall by nozzle 34 and form water ring.The plastics of fusion enter from the feeding-passage 51 of die head, are split into the multiply materials flow by a plurality of discharge openings 38 that are uniformly distributed along the circumference on the die head 30.When plastics were extruded from the discharging duct, the cutting knife 36 that is driven rotation at a high speed by motor 40 cut into fine particle to plastics.Under action of centrifugal force, plastic pellet is thrown to by throwing and is cooled in the water ring 52 on the cylindrical shell 33 and solidifies.Along with flowing of water ring, the plastic pellet of curing flows out cylindrical shell 33 with water.When needs tool changing or cleaning, unclamp hasp 43, along hinge 42 rotating cylinders 33, open prilling head, tool changing in time or cleaning.So far, finish the overall process of the particle moulding of waste or used plastics in prilling head.Afterwards, after conveying worm 36 was discharged most of water, remaining shaping particle was admitted in the whizzer 37.The shaping particle is dried completely under the effect of high speed centrifugation power.Simultaneously, enter blast system 6 by the discharging opening 11 of whizzer, and, the shaping particle is blown in the feeder by wind action.So far, finished reproducing and removal process of whole waste or used plastics.

The utility model can effectively develop the waste or used plastics resource, can administer pollution again, creates huge economy and environmental benefit simultaneously, is the environmental protection equipment of benefiting the nation and the people.

Claims (14)

1, regeneration pelletizer for worn-out plastic is characterized in that, this comminutor comprises vented extruder (1) and the cutting comminutor (3) that is linked in sequence.

2, regeneration pelletizer for worn-out plastic according to claim 1 is characterized in that, also is provided with filter (2) between vented extruder (1) and cutting comminutor (3).

3, regeneration pelletizer for worn-out plastic according to claim 1 and 2 is characterized in that, also is connected with conveying worm (4), drying machine (5) and blast system (6) in cutting comminutor (3) back.

4, regeneration pelletizer for worn-out plastic according to claim 1, it is characterized in that, described vented extruder (1) comprises the machine barrel (9) of band steam vent (10) and is arranged at the interior exhaust screw rod of machine barrel, described exhaust screw rod comprises the first rank screw rod (A) and the second rank screw rod (B), the first rank screw rod (A) comprises feeding section (A1), reducing compression section (A2), metering section (A3) and mixing section (A4), also comprises the pressure regulation section (A5) that is right after mixing section; The second rank screw rod (B) comprises exhaust section (B1), sudden change section (B2), and the metering section that is right after (B3).

5, regeneration pelletizer for worn-out plastic according to claim 4 is characterized in that, the length of exhaust screw rod and the ratio of external diameter are 35～45.

6, regeneration pelletizer for worn-out plastic according to claim 4 is characterized in that, the second rank screw rod (B) is 0.5～0.8 with the length ratio of the first rank screw rod (A).

7, regeneration pelletizer for worn-out plastic according to claim 4 is characterized in that, mixing section (A4) is formed by two sections, and first section is the interrupted shape thread segment that screw thread (12) is interrupted, and second section is the annular groove (13) that the pin shape is set on bottom bar.

8, regeneration pelletizer for worn-out plastic according to claim 4 is characterized in that, the length of the second rank screw metering section (B3) and the ratio of external diameter are 6～13.

9, regeneration pelletizer for worn-out plastic according to claim 4 is characterized in that, the position in that extruder barrel (14) is gone up corresponding pressure regulation section (A5) is provided with pressure regulator valve (15).

10, regeneration pelletizer for worn-out plastic according to claim 1 is characterized in that, described filter (2) comprises that feed liquid passage body (16) and symmetry are connected in the upper piston body (17) and the lower piston body (18) of passage body both sides; Be horizontally arranged with relative two " Y " types or T-shape feed liquid passage (19), (20) in the passage body, a passage (19) leads to liquor inlet and last lower piston respectively, and another passage (20) leads to material liquid outlet and last lower piston respectively; The cross section is arranged at for the piston (21) of shape with a tight waist in the cylindrical cavity of piston body plunger shaft is divided into left and right cavity, the nozzle (22) that is arranged on the piston is communicated with left and right sides cavity, piston is connected with hydraulic stem (23), the symmetry order is equipped with filter (24), filter screen (25) and gripper shoe (26) in left and right piston cavity, offers path (27), (27 ') that left and right plunger shaft is communicated with " Y " type that leads to material liquid outlet or T-shape feed liquid passage (20) on piston and piston body; On piston body, offer respectively feed liquid slag in the left and right plunger shaft is drawn draw slag road (28), (28 '); Passage body (16), upper piston body (17) and lower piston body (18) are provided with heater (29).

11, regeneration pelletizer for worn-out plastic according to claim 1; it is characterized in that; described cutting comminutor (3) includes die head (30), is arranged at the sump body (31) and the cylindrical shell (33) that is connected with the sump body of die head outside; between sump body and cylindrical shell, be provided with nozzle (34); in cylindrical shell, be provided with rotating shaft (35); the front end of rotating shaft (35) is equipped with the tool rest (37) that is used to install cutting knife (36); discharge opening (38) on the cutting knife subtend die head, the rear end of rotating shaft connects by coupling sleeve (39) and motor (40).

12, regeneration pelletizer for worn-out plastic according to claim 11 is characterized in that, cylindrical shell is provided with observation window (41).

13, regeneration pelletizer for worn-out plastic according to claim 11 is characterized in that, the connected mode between sump body (31) and the cylindrical shell (33) is, a side connects by hinge (42), and opposite side connects by hasp (43).

14, regeneration pelletizer for worn-out plastic according to claim 11 is characterized in that, coupling sleeve (39) is provided with knife adjusting device (44), and the overcoat (46) that the cantilever of knife adjusting device (45) passes coupling sleeve and rotating shaft (35) connects.

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