CN119283228A - A modified plastic extrusion granulator - Google Patents
A modified plastic extrusion granulator Download PDFInfo
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- CN119283228A CN119283228A CN202411536826.XA CN202411536826A CN119283228A CN 119283228 A CN119283228 A CN 119283228A CN 202411536826 A CN202411536826 A CN 202411536826A CN 119283228 A CN119283228 A CN 119283228A
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- ring
- cutter
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- pressing
- fixed ring
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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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2614—Means for mounting the cutting member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/0033—Cutting members therefor assembled from multiple blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
本发明涉及制粒机技术领域，具体为一种改性塑料挤出制粒机，包括挤出机、切粒室、送水装置、电机、收料装置、模板和切粒模块，所述挤出机包括主体和外扩段，所述模板与外扩段同轴连接，所述模板上开设有孔圈一、孔圈二和孔圈三，所述切粒模块连接在电机的左侧，且切粒模块包括刀盘，所述刀盘位于模板的右侧，且刀盘的左端面上由内到外圆周阵列有切刀一、切刀二和切刀三，所述切刀一、切刀二、切刀三受电机带动而同步旋转并对孔圈一、孔圈二和圈三差速切粒，本发明通过对切刀的模块化设计，并使不同模块切刀切粒速度不同的方式，实现了使造粒颗粒大小均匀的目的。
The invention relates to the technical field of granulators, in particular to a modified plastic extrusion granulator, comprising an extruder, a granulation chamber, a water supply device, a motor, a material receiving device, a template and a granulation module, wherein the extruder comprises a main body and an outward expansion section, the template is coaxially connected with the outward expansion section, a hole ring one, a hole ring two and a hole ring three are provided on the template, the granulation module is connected to the left side of the motor, and the granulation module comprises a cutter disc, the cutter disc is located on the right side of the template, and a cutter one, a cutter two and a cutter three are arranged in a circular array from inside to outside on the left end surface of the cutter disc, the cutter one, the cutter two and the cutter three are driven by the motor to rotate synchronously and granulate the hole ring one, the hole ring two and the ring three at differential speeds, and the invention realizes the purpose of making the granulation particles of uniform size by modular design of the cutter and making the cutters of different modules have different granulation speeds.
Description
Technical Field
The invention relates to the technical field of granulators, in particular to a modified plastic extrusion granulator.
Background
The modified plastic is obtained by blending common plastic and additives, and can improve the self or additionally has certain or more properties, such as the mechanical property, the thermal property and the chemical property of the modified resin after being modified. For convenience in processing as a raw material, the modified plastic is often pelletized, and an extrusion pelletizer is a key device for pelletizing the modified plastic. The common modified plastic extrusion granulator can be divided into a water-cooling bracing granulator and an underwater granulator according to the working principle, and the underwater granulator has wide development prospect due to higher granulating speed and space saving caused by a more compact structure.
The underwater pelletizer comprises an extrusion part and a pelleting part, and the principle is that the extrusion part directly extrudes molten plastics from a die hole on a die plate, and simultaneously the extruded molten plastics are rotationally cut by a cutter disc and solidified and ascend under the action of cooling water in a pelleting chamber. The extrusion part has one section of expanding pipeline in the discharge end to discharge the plastic material to the template and to make the section of the material flow gradually increased to make the material pressed homogeneously and avoid the pelletizing caused by different extruding speed. In order to achieve the above effects, the diameter-expanding pipeline has a certain length in the radial direction and the axial direction, but the raw material close to the pipe wall runs off more temperature, so that the increase of the length of the diameter-expanding pipeline also can make the temperature of the internal raw material more uneven, and the fluidity difference of the raw material is larger, so that the phenomenon of different granulating sizes occurs again. To solve this problem, the prior art often places heating strips on the expanded diameter tubing to compensate for the temperature dissipated at the tube wall. In the underwater pelletizing system of the large plastic extrusion pelletizer set with the publication number of CN103878898B, the temperature difference of the pelletizing belt of the die plate is reduced through the heat exchange pipeline inside the die plate, so that the plastic flow at the material storage position of the die plate is uniform, and the problem of different sizes of the pelleting particles is avoided.
However, in the case of pelletizing certain materials, the heating belt may have a negative effect, such as in the case of pelletizing the modified resin, the heating belt may raise the temperature of the outer expansion wall, and the high temperature of the outer expansion wall may accelerate the carbide formation rate of the modified resin. The carbide adhered to the inner wall of the outer expansion section affects the heat conductivity, and the formation of the carbide is uneven, and accordingly, the influence on the temperature of the raw material is uneven, so that the flowability of the raw material is uneven, and the problem of uneven granulation size still exists.
Therefore, the problem that the size of the granulating particles is different due to the heating belt is avoided, and a modified plastic extrusion granulator is provided.
Disclosure of Invention
The invention aims to provide a modified plastic extrusion granulator, which solves the problem that the size of granulating particles is different due to the heating belt on an external expansion section in the granulating process of modified resin, and achieves the aim of ensuring that the granulating particles are uniform in size without the heating belt by modularly designing cutters and ensuring that the granulating speeds of different module cutters are different.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a granulator is extruded to modified plastics, includes extruder, grain cutting room, water supply installation, motor, material collecting device, template and grain cutting module, the extruder includes main part and outer section of expanding, template and outer section coaxial coupling that expands, circle one, circle two and circle three have been seted up on the template, grain cutting module is connected with motor drive, and grain cutting module includes the blade disc, the blade disc is located the right side of template, and has cutter one, cutter two and cutter three by interior outer circumference array on the left end face of blade disc, cutter one, cutter two, cutter three are driven by the motor and synchronous rotation and to circle one, circle two and circle three differential grain cutting.
Preferably, the grain cutting module further comprises a cutter shaft and a pressing plate, the right end of the cutter shaft is connected with a motor main shaft, the pressing plate is nested on the cutter shaft, the cutter disc further comprises a disc body, a fixing rod, a first pressing ring, a second pressing ring and a third pressing ring, the disc body is nested at the left end of the cutter shaft, the fixing rods are connected to the left side of the disc body, the first pressing ring, the second pressing ring and the third pressing ring are all connected to the left side of the fixing rod, projections of the first pressing ring, the second pressing ring and the third pressing ring on the right side face of the template in the left-right direction cover an eyelet ring, an eyelet ring and an eyelet ring respectively, and the first cutting knife, the second cutting knife and the third cutting knife are circumferentially arrayed on the first pressing ring, the second pressing ring and the third pressing ring respectively, and the quantity of the arrays of the three is different.
The first cutters, the second cutters and the third cutters are modularized respectively through the first compression ring, the second compression ring and the third compression ring, and the number of arrays of the cutters on the compression ring is adjusted to enable the grain cutting speeds of the first eyelet, the second eyelet and the third eyelet to be different, and the regulation and control on the grain cutting uniformity are realized through the regulation of the grain cutting speeds.
Preferably, the fixing rod is detachably connected to the disc body, and the first compression ring, the second compression ring and the third compression ring are all detachably connected to the fixing rod. On the one hand, the quantity of dead lever can not too much, otherwise can influence the discharge of granule, consequently the dead lever is limited with the area of being connected of clamping ring, can guarantee better stability through non-detachable connection. On the other hand, the connection between the disc body and the cutter shaft is inconvenient to disassemble and assemble, and the stability of connection can be influenced by frequent disassembly and assembly, so that the fixing rod and the disc body are disassembled and connected, the compression ring is convenient to disassemble and assemble, the distance between the cutters is convenient to adjust, and the granulated particles can be guaranteed to be well uniform in various granulating environments.
Preferably, a plurality of the dead lever circumference arrays are on the left surface of disk body, and circumference arrays make dead lever evenly distributed on the disk body, make tie point distribution even, avoid stress concentration's condition, and then can fix the clamping ring more steadily. And the fixed rod is inclined to the radial direction of the disc body, so that the contact area between the fixed rod and the disc body is larger, and further more stable connection is formed. Through the arrangement, the connecting piece of the cutter on the disc body is more stable, so that a more uniform and more stable granulating effect is realized.
Preferably, a resistance reducing surface is arranged on the fixed rod of the part of the cutter head which is not connected with the cutter head, the resistance reducing surface is arranged on the right side surface of the fixed rod, and the resistance reducing surface is inclined towards the moving direction of the cutter.
Through the scheme, the resistance of water flow to rotation of the disc body is reduced, and the impact of the fixed rod on the formed particles is avoided.
Preferably, the first clamping ring comprises a fixed ring and a movable ring, the fixed ring is connected to the left side of the fixed rod, the movable ring is connected to the left side of the fixed ring, a sliding groove is formed in the inner portion of the fixed ring and concentric with the fixed ring, the number of clamping grooves is identical to that of the first cutting knives, the first cutting knives on the movable ring can be regulated and controlled through the number of the clamping grooves on the movable ring, and then the cutting speed is regulated.
The cutter I comprises a cutter tail, a cutter body and a cutter head, wherein the cutter tail is installed in a sliding groove in a matched mode, the cutter head is attached to the right side face of the template, the cutter body is connected with the cutter tail and the cutter head and is positioned in the clamping groove, positioning along the axial direction and the radial direction of the fixed ring is formed for cutting through the matching of the sliding groove and the cutter head, positioning along the circumferential direction of the fixed ring is formed for cutting through the matching of the clamping groove and the cutter body, and therefore the cutter I is fixed on the press ring. The second pressing ring and the third pressing ring are also provided with a movable ring and a fixed ring, and the second cutter and the third cutter also comprise cutter tails, cutter bodies and cutter heads.
Preferably, the minimum distance between the cutter head and the fixed ring is recorded as h, and the h is not smaller than the diameter of the granulated particles, the distance between the fixed ring on the first pressing ring and the fixed ring on the second pressing ring is larger than the distance between the fixed ring on the second pressing ring and the fixed ring on the third pressing ring, and the distance between the fixed ring on the second pressing ring and the fixed ring on the third pressing ring is not smaller than the diameter of the granulated particles. Through setting up to the interval, can guarantee to make granulation granule can normally discharge, can make the granule keep spherical better again.
Preferably, the sliding groove is provided with a cutter inlet, so that the cutter can be freely disassembled and assembled, and further, the cutter inlets on the first compression ring, the second compression ring and the third compression ring are arranged along any radius of the disc body, and the cutter inlet is internally provided with a closing pin, so that a plurality of cutter inlets are controlled through one closing, and the disassembly and assembly of the cutter are convenient.
Preferably, the inner ring of the fixed ring has a taper, the large diameter of the inner ring of the fixed ring is arranged on the right side, the right side surface of the fixed ring is provided with drainage grooves which are distributed on the edge of the fixed ring, so that the water pressure on the right side of the fixed ring is locally reduced, and the granulated particles are wrapped by water flow and discharged from the interval of the fixed ring.
Preferably, the fixed rings on the second compression ring and the third compression ring are provided with extension sections, the extension sections are arranged on the left side of the fixed rings, and the extension sections are provided with conicity consistent with the inner circle of the fixed rings so as to avoid the phenomenon that particles are discharged along the radial direction of the disc body and are cut by the cutter for the second time.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, through the modularized design of the cutters on the cutter disc, the cutters have different granulating speeds for the raw material particles in the inner ring and the outer ring of the template, so that the problem of different granulating particle sizes caused by different raw material mobility in the diameter expanding section is solved, meanwhile, the use of a heating belt is avoided, and the production cost of the granulator is saved.
2. According to the invention, through the design of the compression rings on the cutter disc, the installation quantity of the cutters can be independently controlled by each compression ring so as to realize different grain cutting speeds, and the installation and the disassembly of the cutters on the compression rings are facilitated through the design of the feeding edge on the compression rings.
3. According to the invention, through the design of the extension section on the fixed ring, the water flow between the template and the cutter head is slowed down while the granulating particles are prevented from being cut secondarily, so that the granulating particles can be better spheroidized by means of higher water temperature, and in addition, the particles are smoothly discharged to the material receiving pipeline through the taper of the extension section and the fixed ring and the cooperation of the drainage groove.
Drawings
FIG. 1 is a schematic view of the overall right partial cutaway isometric structure of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the overall left partial cutaway isometric structure of the present invention;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged schematic view of portion C of FIG. 2 in accordance with the present invention;
FIG. 6 is a schematic view of the overall left-hand full section of the present invention;
FIG. 7 is an enlarged schematic view of portion D of FIG. 2 in accordance with the present invention;
FIG. 8 is a schematic view of the overall full section isometric construction of the present invention;
fig. 9 is an enlarged schematic view of portion E of fig. 8 in accordance with the present invention.
In the figure, 1, an extruder; 11, a main body, 12, an outer expanding section, 2, a grain cutting chamber, 3, a water delivery device, 4, a motor, 5, a receiving device, 6, a template, 61, a first eyelet, 62, a second eyelet, 63, a third eyelet, 7, a grain cutting module, 71, a cutter head, 711, a first cutter, 7111, a cutter tail, 7112, a cutter body, 7113, a cutter head, 712, a second cutter, 713, a cutter third, 714, a disc body, 715, a fixed rod, 7151, a resistance reducing surface, 716, a first compression ring, 7161, a fixed ring, 71611, a chute, 71612, a feed port, 71613, a sealing pin, 71614, a drainage groove, 71615, an extension section, 7162, a movable ring, 71621, a clamping ring, 717, a compression ring, a second compression ring, 718, three, 72, a cutter shaft, 73 and a pressing plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 9, the present invention provides a modified plastic extrusion granulator, which has the following technical scheme:
The invention relates to a modified plastic extrusion granulator, which comprises an extruder 1, a granulating chamber 2, a water delivery device 3, a motor 4, a material receiving device 5, a template 6 and a granulating module 7, wherein the extruder 1 comprises a main body 11 and an outer expansion section 12, the granulating chamber 2 is connected to the right side of the outer expansion section 12 through bolts, a high-temperature-resistant sealing gasket is added between the main body and the outer expansion section to ensure tightness, the water delivery device 3 is usually composed of a water pump and a water pipe, the water pump of the water delivery device 3 is arranged at the rear side of the granulating chamber 2, the water pipe connected to the lower end of the granulating chamber 2 is communicated with the granulating chamber 2, the motor 4 is arranged on a frame, the motor 4 is provided with a certain movable space in the left-right direction, so as to realize the action of retracting and feeding after being connected with the granulating module 7, the material receiving device 5 is used for receiving and drying, the material receiving box is arranged in front of the granulating chamber 2, and the water pipe connecting the upper end of the granulating chamber 2, the main body 11 is internally provided with a screw stirring device and a heating device, the plastic particle added into the main body 11 is stirred and heated to be melted to the rear side of the granulating chamber 2, the plastic particle is also heated to the heating device, and the modified plastic particle is required to be formed under the condition of high-temperature condition of the granulating module is removed from the heating section 6, and the high-temperature-resistant to be removed from the granulating module is usually in order to remove the problem of reducing the granulating and the granulating module, and the problem is removed from the high-phase-reducing and is removed from the problem and is usually due to be removed from the surface-reducing and increased and is subjected to the problem and is subjected to the high-reducing and is subjected to the problem to the particle-reducing and is subjected to the high-reducing and is subjected to the reduction and to the reduction. The template 6 is coaxially connected with the outer expansion section 12, and the template 6 is provided with a first eyelet 61, a second eyelet 62 and a third eyelet 63, which are only used for simplifying the description, and in actual production, more eyelets are often arranged on the template 6 to improve the granulating efficiency. The grain cutting module 7 is connected to the left side of the motor 4, the grain cutting module 7 comprises a cutter disc 71, the cutter disc 71 is located on the right side of the template 6, a cutter I711, a cutter II 712 and a cutter III 713 are arranged on the left end face of the cutter disc 71 from inside to outside in an array mode, each eyelet is provided with a cutter module corresponding to each other through splitting of the original integrated cutters, the cutter I711, the cutter II 712 and the cutter III 713 are driven by the motor 4 to synchronously rotate and cut grains on the eyelet I61, the eyelet II 62 and the eyelet III 63 in a differential mode, and the grain cutting speed of the cutter to the eyelet can be further regulated and controlled through adjustment of the cutter modules so as to ensure the uniformity of granulating grains under different working conditions.
As an embodiment of the present invention, referring to fig. 1 and 2, the dicing module 7 further includes a cutter shaft 72 and a pressing plate 73, the right end of the cutter shaft 72 is in transmission connection with the main shaft of the motor 4 through a coupling, the pressing plate 73 is nested on the cutter shaft 72, and when the cutter shaft 72 moves leftwards, the dicing chamber 2 is sealed by means of a locking device. The cutter disc 71 further comprises a disc 714, a fixing rod 715, a first pressing ring 716, a second pressing ring 717 and a third pressing ring 718, wherein the disc 714 is nested at the left end of the cutter shaft 72, the fixing rods 715 are connected to the left side of the disc 714, the first pressing ring 716, the second pressing ring 717 and the third pressing ring 718 are all connected to the left side of the fixing rods 715, projections of the three parts on the right side face of the template 6 along the left-right direction cover the first hole ring 61, the second hole ring 62 and the third hole ring 63 respectively, the first cutting knife 711, the second cutting knife 712 and the third cutting knife 713 are circumferentially arrayed on the first pressing ring 716, the second pressing ring 717 and the third pressing ring 718 respectively, the first cutting knife 711, the second cutting knife 712 and the third cutting knife 713 are modularized through the first pressing ring 716, the second pressing ring 717 and the third pressing ring 718 respectively, and the modularized cutting knives correspond to the hole rings respectively, so that grain cutting parameters of all the hole rings can be independently controlled, and isotropy of the integrated cutting knives during grain cutting is avoided.
The number of arrays of cutters one 711, two 712 and three 713 on the first 716, two 717 and three 718 rings, respectively, is different. The diameter of the compression ring is fixed, the distance between cutters can be adjusted by adjusting the number of cutter arrays, and the number of holes on the eyelet is also fixed, so that the smaller the number of cutters on the array is, the larger the distance between the cutters is, and correspondingly, the longer the interval time between two adjacent cutters passing through the same hole on the eyelet is, so that particles can be extruded more fully, and a larger volume is obtained after cutting. Therefore, the number of the arrays of the cutters on the compression ring is adjusted, so that the grain cutting speeds on the first eyelet 61, the second eyelet 62 and the third eyelet 63 are different, and further the regulation and control of the uniformity of grain cutting grains are realized.
As an embodiment of the present invention, referring to fig. 2 to 4, a plurality of fixing rods 715 are circumferentially arrayed on the left side surface of the plate 714, and the circumferential array uniformly distributes the fixing rods 715 on the plate 714, so that the connection points are uniformly distributed, the condition of stress concentration is avoided, and the compression ring can be more stably fixed. The fixing rod 715 is inclined to the radial direction of the disc 714, so that the contact area between the fixing rod and the disc 714 is larger, and a more stable connection is formed. With the arrangement described above, the attachment of the cutter to the disc 714 is made more stable to achieve a more uniform, more stable pelleting effect. The fixed rod 715 is connected with the disc 714 through bolts, the connection between the disc 714 and the cutter shaft 72 is inconvenient to disassemble and assemble, and the stability of connection is affected by frequent disassembly and assembly, so that the fixed rod 715 and the disc 714 are disassembled and connected, the compression ring is disassembled and assembled conveniently, the distance between cutters is adjusted conveniently, and the granulated particles can be guaranteed to be uniform in various granulating environments. The first compression ring 716, the second compression ring 717 and the third compression ring 718 are welded on the fixing rods 715, the number of the fixing rods 715 cannot be too large, otherwise, the discharge of particles can be influenced, and therefore the connection area of the fixing rods 715 and the compression rings is limited, and good stability can be guaranteed through non-detachable connection. In this way, six fixing rods 715 are provided, so that each fixing rod 715 is tangent to the peripheral surface of the right small flange of the disc 714, so as to enclose a regular hexagon, thereby enhancing the stability of the support.
As an embodiment of the present invention, referring to fig. 2, after the granulated particles are discharged from the interval of the fixed ring 7161, they are contacted with the fixed rod 715 in a rotating state, in order to avoid damage to the particle surface by the fixed rod 715 rotating at a high speed, a resistance reducing surface 7151 is provided on a part of the fixed rod 715 which is not connected to the cutterhead 71, the resistance reducing surface 7151 is provided on the right side surface of the fixed rod 715, and the resistance reducing surface 7151 is inclined in the direction of movement of the cutter. Meanwhile, the resistance reducing surface 7151 is obliquely arranged towards the moving direction of the cutter, so that the resistance of water flow to the rotation of the disc 714 is effectively reduced, and the energy consumption of the motor 4 is saved.
As an embodiment of the present invention, referring to fig. 5, the first pressing ring 716 includes a fixed ring 7161 and a movable ring 7162, the fixed ring 7161 is connected to the left side of the fixed rod 715, the movable ring 7162 is connected to the left side of the fixed ring 7161, a sliding groove 71611 is formed in the fixed ring 7161, the sliding groove 71611 is concentric with the fixed ring 7161, the clamping grooves 71621 are circumferentially arranged on the movable ring 7162, the number of the clamping grooves 71621 is the same as the number of the first cutting blades 711, and the number of the first cutting blades 711 on the pressing ring can be regulated by setting the number of the clamping grooves 71621 on the movable ring 7162, so as to regulate the cutting speed.
The clamping groove 71621 penetrates through the left side and the right side of the movable ring 7162, the cutter I711 comprises a cutter tail 7111, a cutter body 7112 and a cutter head 7113, the cutter tail 7111 is installed in the sliding groove 71611 in a matched mode, the cutter head 7113 is attached to the right side face of the template 6, the cutter body 7112 is connected with the cutter tail 7111 and the cutter head 7113, the cutter body 7112 is located in the clamping groove 71621, positioning of the cutter along the axial direction and the radial direction of the fixed ring 7161 is formed through cooperation of the sliding groove 71611 and the cutter head 7113, positioning along the circumferential direction of the fixed ring 7161 is formed through cooperation of the clamping groove 71621 and the cutter body 7112, and therefore the cutter I711 is fixed on the clamping ring I716. And the movable ring 7162 and the fixed ring 7161 are detachably connected, and in the mode, threaded connection is used, so that the cutter is convenient to assemble and disassemble. The second ring 717 and the third ring 718 also have a moving ring 7162 and a fixed ring 7161, and the second cutter 712 and the third cutter 713 also include a cutter tail 7111, a cutter body 7112, and a cutter head 7113.
As an embodiment of the present invention, referring to fig. 7, the inner ring of the fixed ring 7161 has a taper, the large diameter of the inner ring of the fixed ring 7161 is on the right side, the right side surface of the fixed ring 7161 is provided with drainage grooves 71614, the drainage grooves 71614 are distributed on the edge of the fixed ring 7161, and the diversion of the cooling water around the fixed ring 7161 through the drainage grooves 71614 accelerates the flow of the cooling water, so that the water pressure part on the right side of the fixed ring 7161 is lowered, the granulated particles are wrapped by the water flow, and the granulated particles are discharged from the interval of the fixed ring 7161. In addition, the granulated particles are floated up by the buoyancy of the cooling water after being cut, which results in that the particles cut by the cutter one 711 are cut again by the cutter two 712 and the cutter three 713 in the floating up process, in order to avoid this, the fixed rings 7161 on the press rings two 717 and three 718 are provided with the extension sections 71615, the extension sections 71615 are arranged on the left side of the fixed rings 7161, and the extension sections 71615 have a taper consistent with the inner ring of the fixed rings 7161. Meanwhile, the extension section 71615 also slows down the circulation of cooling water between the template 6 and the cutter head 71, so that the water temperature between the template 6 and the cutter head 71 is higher, and the raw materials cannot be cooled too quickly when being extruded from the die holes, and cannot be spheroidized by isotropy of stress in water.
As an embodiment of the present invention, referring to fig. 6, the minimum distance from the cutter head 7113 to the fixed ring 7161 is denoted as h, where h is not smaller than the diameter of the granulated particle, the distance between the fixed ring 7161 on the first press ring 716 and the fixed ring 7161 on the second press ring 717 is larger than the distance between the fixed ring 7161 on the second press ring 717 and the fixed ring 7161 on the third press ring Kong Yahuan, and the distance between the fixed ring 7161 on the second press ring 717 and the fixed ring 7161 on the third press ring 718 is not smaller than the diameter of the granulated particle. Too small a distance is not favorable for discharging the granulated particles, and if the h value is smaller than the diameter of the granulated particles, the cutter can squeeze the particles which are not hardened, so that the particles are incomplete in spheroidization. In addition, the h value should not be too large, so that the cooling water between the template 6 and the cutter head 71 is better insulated by matching with the extension section 71615, and the granulated particles can be better spheroidized.
As an embodiment of the present invention, referring to fig. 7 to 9, a sliding chute 71611 is provided with a cutter inlet 71612, so that the cutter can be freely assembled and disassembled, further, the cutter inlet 71612 on the first compression ring 716, the second compression ring 717 and the third compression ring 718 are arranged along any radius of the disc 714, and a closing pin 71613 is installed in the cutter inlet 71612, so that the assembly and the disassembly of the cutter are facilitated by controlling a plurality of cutter inlets 71612 through one closure.
In the disassembly process, after the connecting module of the fixed ring 7161 and the fixed rod 715 is removed from the tray 714, the module is firstly placed on a horizontal plane in a mode that the fixed rod 715 faces downwards, then the connection between the movable ring 7162 and the fixed ring 7161 is released, then the closing pin 71613 is removed and taken out from the feed hole 71612, then the movable ring 7162 is rotated, the clamping groove 71621 is used for taking out cutters from the Ji Jindao hole 71612, and the rotation process of the movable ring 7162 is repeated until all cutters are taken out. When the cutter is installed, the moving ring 7162 is firstly placed on the fixed ring 7161, a certain clamping groove 71621 is opposite to the Ji Jindao opening 71612, then the cutter tail 7111 of the cutter is provided with a clamping groove 71621 to be placed into the cutter inlet 71612, the process is repeated until all the cutters are installed along with the moving ring 7162 entering the sliding groove 71611, then the closing pin 71613 is inserted into the cutter inlet 71612 and fixed, and finally the moving ring 7162 is fixed.
The working principle is that after the heating belt is canceled, the flow of the raw materials is different because the temperature of the plastic raw materials in the expanding section is not uniform, the higher the temperature of the raw materials is near the center of the template 6, the faster the extruded speed is, and correspondingly, when the integral cutter passes through the die holes in the inner ring and the outer ring of the template 6 at the same time, the sizes of cut particles are different. In order to avoid the phenomenon, the invention considers that the time interval of the adjacent cutters passing through the same die hole is different, the longer the die hole is, the longer the time interval is (correspondingly, the dicing speed of the outer ring relative to the inner ring is reduced), so that the particles of the outer ring are extruded for more sufficient time to obtain larger particles.
Specifically, the original integrated cutter is divided into three parts, namely a first cutter 711, a second cutter 712 and a third cutter 713, and the first cutter 711, the second cutter 712 and the third cutter 713 are respectively circumferentially arrayed on a first pressing ring 716, a second pressing ring 717 and a third pressing ring 718, the first pressing ring 716, the second pressing ring 717 and the third pressing ring 718 are all fixed on a fixed rod 715 and are driven by a motor 4 to synchronously rotate, and in order to achieve the above effects, the longer the cutter near the outer ring passes through the same die hole, the number of the arrays of the first cutter 711, the second cutter 712 and the third cutter 713 is gradually reduced, so that the cutter spacing is gradually increased.
According to the invention, the homogenization of the size of the granulated particles is realized by adjusting the number of the cutters on the press ring, and the number of the cutters which are specifically required for different working conditions is obtained through advanced design and calculation on one hand, and on the other hand, the number of the cutters on the press ring is obtained through on-site debugging, so that the number of the cutters on the press ring is adjustable, and the adjustment process is convenient. Therefore, the pressing ring is divided into the fixed ring 7161 and the movable ring 7162, and the fixed ring 7161 and the movable ring 7162 are detachably connected, so that the number of cutters on the pressing ring can be adjusted by replacing the movable ring 7162 with different numbers of clamping grooves 71621 while the positioning of the cutters is realized through the sliding groove 71611 of the fixed ring 7161 and the clamping groove 71621 of the movable ring 7162.
Referring to fig. 9, a specific disassembly and assembly process of the cutter is as follows, when disassembly is performed, after a connection module of the fixed ring 7161 and the fixed rod 715 is removed from the tray 714, the module is placed on a horizontal plane with the fixed rod 715 facing downwards, then the connection between the movable ring 7162 and the fixed ring 7161 is released, then the closing pin 71613 is disassembled and taken out from the feed port 71612, then the movable ring 7162 is rotated, the clamping groove 71621 is made to correspond to the Ji Jindao port 71612 to take out the cutter, and the rotation process of the movable ring 7162 is repeated until all the cutters are taken out. When the cutter is installed, the moving ring 7162 is firstly placed on the fixed ring 7161, a certain clamping groove 71621 is opposite to the Ji Jindao opening 71612, then the cutter tail 7111 of the cutter is provided with a clamping groove 71621 to be placed into the cutter inlet 71612, the process is repeated until all the cutters are installed along with the moving ring 7162 entering the sliding groove 71611, then the closing pin 71613 is inserted into the cutter inlet 71612 and fixed, and finally the moving ring 7162 is fixed.
After the particles are cut, the particles are floated by the buoyancy of the cooling water, and during this process, the particles cut by the cutter one 711 are cut again by the cutters two 712 and three 713, so that the surfaces of the particles are damaged. To avoid this, the extension 71615 is disposed on the fixed ring 7161, and the extension 71615 and the fixed ring 7161 have a taper, so that the particles are discharged along the interval of the fixed ring 7161 under the guiding action of the drainage groove 71614.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a modified plastics extrusion granulator, includes extruder (1), grain cutting room (2), water supply unit (3), motor (4) and material receiving arrangement (5), extruder (1) include main part (11) and outer section (12) that expands, and wherein still include template (6) and grain cutting module (7), template (6) and outer section (12) coaxial coupling that expands, set up eyelet one (61), eyelet two (62) and eyelet three (63) on template (6), grain cutting module (7) connect in the left side of motor (4), and grain cutting module (7) include blade disc (71), blade disc (71) are located the right side of template (6), and blade disc (71) are from interior to outer circumference array have cutter one (712), cutter two (712) and cutter three (713) on the left end face, cutter one (711), two (712), three (713) are driven by motor (4) and synchronous rotation and cut eyelet one (61), eyelet two (62) and eyelet three (63).
2. The modified plastic extrusion granulator of claim 1 wherein the granulating module (7) further comprises a cutter shaft (72) and a pressing plate (73), wherein the right end of the cutter shaft (72) is connected with a main shaft of a motor (4), the pressing plate (73) is nested on the cutter shaft (72), the cutter disc (71) further comprises a disc body (714), a fixing rod (715), a first pressing ring (716), a second pressing ring (717) and a third pressing ring (718), the disc body (714) is nested at the left end of the cutter shaft (72), the fixing rods (715) are connected to the left side of the disc body (714), the first pressing ring (716), the second pressing ring (717) and the third pressing ring (718) are all connected to the left side of the fixing rods (715), projections of the three on the right side surface of the template (6) along the left-right direction cover a first hole ring (61), a second hole ring (62) and a third pressing ring (63), and the first pressing ring (711), the second pressing ring (712) and the third pressing ring (713) are respectively arranged in a circular array on the first pressing ring (716) and the second pressing ring (718) and the third pressing ring (718) respectively.
3. A modified plastic extrusion granulator according to claim 2, wherein the fixing rod (715) is detachably connected to the disc body (714), and the first compression ring (716), the second compression ring (717) and the third compression ring (718) are all detachably connected to the fixing rod (715).
4. A modified plastic extrusion granulator as claimed in claim 3, wherein a plurality of said fixing bars (715) are circumferentially arrayed on the left side of the disc (714), and the fixing bars (715) are inclined radially to the disc (714).
5. A modified plastic extrusion granulator according to claim 4, wherein the fixed rod (715) of which part is not connected with the cutter head (71) is provided with a resistance reducing surface (7151), the resistance reducing surface (7151) is arranged on the right side surface of the fixed rod (715), and the resistance reducing surface (7151) is inclined towards the movement direction of the cutter.
6. A modified plastic extrusion granulator according to claim 2, wherein the first clamping ring (716) comprises a fixed ring (7161) and a movable ring (7162), the fixed ring (7161) is connected to the left side of the fixed rod (715), the movable ring (7162) is connected to the left side of the fixed ring (7161), a sliding groove (71611) is formed in the fixed ring (7161), the sliding groove (71611) is concentric with the fixed ring (7161), clamping grooves (71621) are formed in the movable ring (7162) in a circumferential array, the number of the clamping grooves (71621) is the same as that of the first cutting knife (711), the clamping grooves (71621) penetrate through the left side and the right side of the movable ring (7162), the first cutting knife (711) comprises a cutter tail (7111), a cutter body (7112) and a cutter bit (13), the cutter tail (7111) is installed in a matched mode in the sliding groove (71611), the right side of the sliding groove (7113) is attached to the die plate (6), the cutter body (7112) is connected to the cutter head (7112) and the cutter head (7113) is also provided with the second cutting knife (7113) and the cutter (714) and the cutter (713) is located in the inner part of the movable ring (713) and the third cutting ring (714).
7. A modified plastic extrusion granulator according to claim 6, wherein the minimum distance from the cutter head (7113) to the fixed ring (7161) is denoted as h, wherein h is not smaller than the diameter of the granulated particles, the distance between the fixed ring (7161) on the first compression ring (716) and the fixed ring (7161) on the second compression ring (717) is larger than the distance between the fixed ring (7161) on the second compression ring (717) and the fixed ring (7161) on the third Kong Yahuan (718), and the distance between the fixed ring (7161) on the second compression ring (717) and the fixed ring (7161) on the third compression ring (718) is not smaller than the diameter of the granulated particles.
8. A modified plastic extrusion granulator according to claim 6, wherein the chute (71611) is provided with a feed edge (71612), the feed openings (71612) on the first (716), second (717) and third (718) are arranged along any radius of the disc body (714), and the feed opening (71612) is internally provided with a closing pin (71613).
9. The modified plastic extrusion granulator of claim 6, wherein the inner ring of the fixed ring (7161) has a taper, the large diameter of the inner ring of the fixed ring (7161) is on the right side, the right side surface of the fixed ring (7161) is provided with drainage grooves (71614), and the drainage grooves (71614) are distributed on the edge of the fixed ring (7161).
10. The modified plastic extrusion granulator of claim 9, wherein the stator rings (7161) on the second (717) and third (718) rings have an extension (71615), the extension (71615) is disposed on the left side of the stator ring (7161), and the extension (71615) has a taper consistent with the inner circumference of the stator ring (7161).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411536826.XA CN119283228A (en) | 2024-10-31 | 2024-10-31 | A modified plastic extrusion granulator |
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| CN202411536826.XA CN119283228A (en) | 2024-10-31 | 2024-10-31 | A modified plastic extrusion granulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119858290A (en) * | 2025-03-25 | 2025-04-22 | 唐山东亚重工装备集团有限公司 | Preparation equipment of high-strength ageing-resistant polymer rubber composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119858290A (en) * | 2025-03-25 | 2025-04-22 | 唐山东亚重工装备集团有限公司 | Preparation equipment of high-strength ageing-resistant polymer rubber composite material |
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