CN114905656B - Circulation calendering prilling granulator - Google Patents
Circulation calendering prilling granulator Download PDFInfo
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- CN114905656B CN114905656B CN202210516843.1A CN202210516843A CN114905656B CN 114905656 B CN114905656 B CN 114905656B CN 202210516843 A CN202210516843 A CN 202210516843A CN 114905656 B CN114905656 B CN 114905656B
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- 238000003490 calendering Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 150
- 238000005469 granulation Methods 0.000 claims abstract description 50
- 230000003179 granulation Effects 0.000 claims abstract description 50
- 238000007599 discharging Methods 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000008187 granular material Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005096 rolling process Methods 0.000 abstract description 6
- 239000003380 propellant Substances 0.000 abstract description 5
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/025—General arrangement or layout of plant
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Glanulating (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of mechanical equipment, and particularly relates to a circulating calendaring granulation device, wherein an automatic feeding unit primarily processes materials through a material pouring screw and a material conveying screw, the calendaring granulation unit calendars and granulates the materials, an automatic discharging unit sends the granular materials into a mixing and conveying unit, the mixing and conveying unit sends the granular materials into the automatic feeding unit again for circulating granulation, in the process, a spray cooling unit cools or reduces the pressure, cleans residual materials, keeps smooth, can automatically convey propellant materials, carries out repeated circulating granulation at different roller gaps and rotating speeds, and can be used for researching the dehydration effect and the mixing effect of different materials at different process temperatures, roller gaps, roller rotating speeds and roller surface combinations; the rolling granulation unit is simple in structure and reliable in performance, is changed into a split type matching mode from an integrated type, adopts a double-side driving mode, ensures the operation safety, and improves the transmission efficiency.
Description
Technical field:
The invention belongs to the technical field of mechanical equipment, and particularly relates to a circulating calendaring granulation device which can automatically convey propellant materials and carry out repeated circulating granulation at different roller gaps and rotating speeds.
The background technology is as follows:
A calender is a machine for performing pressing and stretching of an article, which is pressed and stretched into a film with a certain thickness and surface by a calender roll and a thermometer. According to the heating mode, cold pressing and hot pressing are adopted, wherein the cold pressing is applicable to materials which do not need heating, such as graphite films, graphite sheets, wave absorbing materials, shielding materials, magnetic materials, nonferrous metal materials and the like; hot pressing and water heating, electric heating, oil heating and electromagnetic heating are suitable for materials which do not need heating, such as rubber, silica gel, silicone rubber, phase change materials, PTFE or plastics, and the like. The number of the rollers can be divided into two-roller, three-roller, four-roller, five-roller calenders and the like. The rollers are classified into L-type, T-type, F-type, Z-type, S-type and the like according to the arrangement mode of the rollers. The driving system of the traditional calender is unstable, and free distance adjustment is difficult to realize; the temperature, the rotating speed and the roller gap of the calendering double rollers can not be adjusted in real time, and the problems of slow temperature rise, asynchronous rotating speed, slow distance adjustment feedback and the like in the use process lead to the complexity of the operation process, so that the subsequent granulating effect has great errors and defects, and great potential safety hazards are brought to operators.
The granulator is a forming machine capable of manufacturing materials into specific shapes, basically adopts a screw or double-screw extruder to extrude the materials, and then carries out the working procedures of cooling, cutting and the like. And most of the granulating devices need manual feeding, feeding and receiving, the working devices are difficult to clean, the local granulating pressure is high, the service life of equipment is shortened, and the residual materials are difficult to recycle.
The calendaring and granulating device in the prior art can not effectively combine a granulator and a calender for use, increases the complicated degree of the process, can not realize continuous mixing, has difficult control of mixing and granulating effects, can not meet the mixing and granulating requirements of powder materials, can cause great cost consumption due to frequent replacement of the calendaring and granulating device, and has great potential safety hazards when the powder materials are repeatedly mixed and certain dangerous-grade materials are processed; for example, a calender granulator disclosed in chinese patent 20201234307. X comprises a frame, wherein a rolling mechanism is arranged on the frame, the rolling mechanism comprises a first squeeze roller and a second squeeze roller, wherein a plurality of first squeeze grooves are uniformly distributed on the roller surface of the first squeeze roller, and each first squeeze groove extends along the axial length direction of the roller surface to penetrate through two end surfaces of the roller surface; two end surfaces of the first extrusion roller are respectively provided with a forming ring, the forming rings are provided with discharge holes, and the discharge holes are communicated with the first extrusion groove; the roll surface of the second extrusion roll is uniformly provided with a plurality of second extrusion grooves, each second extrusion groove is distributed along the length direction of the axis of the roll surface, two ends of each second extrusion groove are blocked, and a cutter mechanism is arranged at the discharge hole of the forming ring; the cross section of the first extrusion groove is U-shaped, and the cross section of the second extrusion groove is of a triangular structure; the first squeeze roller and the second squeeze roller are both of a heatable structure; the cutter mechanism comprises a cutter rest and a blade, the blade is arranged on the cutter rest, and the blade is driven to rotate by the blade driving mechanism; one end of the tool rest is connected with the frame and can rotate around the connecting part of the tool rest, and a limiting mechanism for limiting the rotation angle of the tool rest is also arranged on the frame; the tool rest is also provided with a tension spring which is connected with the frame; the distance between the blade of the cutter mechanism and the end face of the forming ring is 1-3mm; a material guide groove is arranged below each cutter mechanism, wherein the material outlet of one material guide groove is connected to the conveyer belt through one vibration material guide groove, and the material outlet of the other material guide groove is directly connected to the conveyer belt; the second extrusion roller is arranged on the second bearing seat, and the second bearing seat is a movable mechanism; a driving mechanism is arranged on the frame and is connected with the second bearing seat to drive the second bearing seat to translate along the frame; a guide roller is arranged between the bottom of the second bearing seat and the frame, and a displacement sensor is arranged on the second bearing seat. The granulating device has single function and low automation degree, and the granulating efficiency is greatly reduced.
Therefore, a novel circulation calendaring granulation device is developed and designed to improve the automation degree and the production efficiency of screw propellant material granulation, meet the industrial requirements and have positive social and economic benefits.
The invention comprises the following steps:
the invention aims to overcome the defects in the prior art, and seeks to design a circulating calendaring granulation device to realize automatic conveying and circulating granulation of propellant materials and research the dehydration effect and mixing effect of different materials.
The invention relates to a main structure of a circulating calendaring granulation device, which comprises an automatic feeding unit forming a circulating system, a calendaring granulation unit arranged below the automatic feeding unit, an automatic discharging unit connected with the calendaring granulation unit, and a mixing and conveying unit communicating the automatic discharging unit with the automatic feeding unit.
The automatic feeding unit is provided with a spray cooling unit.
The main structure of the automatic feeding unit comprises a hopper, a material pouring screw, a material conveying screw, a coupler, a material changing plate, a material changing motor, a material blocking plate and a material blocking motor; a material pouring screw rod is arranged in the hopper and is connected with the pneumatic motor, a material conveying screw rod is arranged below the hopper, one end of the material conveying screw rod is connected with the coupling, a material changing plate driven by a material changing motor is arranged above the other end of the material conveying screw rod, and a material blocking plate driven by a material blocking motor is arranged below the material conveying screw rod; the hopper is divided into a left hopper and a right hopper by the baffle plate, the pneumatic motor is arranged on a support frame fixed on the hopper, a feeding port positioned above the hopper is further formed in the support frame, the left hopper and the right hopper are respectively connected with a left discharging channel and a right discharging channel through support plates, the left discharging channel and the right discharging channel are respectively connected with the left discharging port and the right discharging port which are formed in a feeding screw shell, the feeding screw shell is arranged on a fixed plate through a support seat, a feeding screw is arranged in the feeding screw shell, the feeding screw is connected with a coupling through a transmission shaft, a feeding port is formed in the upper portion of the other end of the feeding screw, a discharging port is formed in the lower portion of the feeding screw, a feeding plate is arranged at the feeding port, the discharging port is connected with a discharging pipeline, and a baffle plate is arranged in the discharging pipeline.
The main structure of the calendaring granulation unit comprises a front roller, a rear roller, a roller end coupler, a motor moving plate, a mandrel, a granulation disc group, a rotating shaft, a die tensioning mechanism and a cutter; the front roller and the rear roller are respectively connected with a roller end coupler, the roller end coupler is connected with a motor end coupler, the motor end coupler is connected with a motor, and a motor moving plate is arranged below the motor at one end of the rear roller; the inner parts of the front roller and the rear roller are respectively provided with a mandrel, and a rotary joint is arranged in the mandrels; the outer parts of the front roller and the rear roller are provided with granulating disc groups, the symmetrical parts of the two ends of the rear roller are provided with rotating shafts, the periphery of each rotating shaft is provided with a die tensioning mechanism, and a cutter is fixed at the end part of each rotating shaft; the front roller and the rear roller which are meshed with each other are arranged on the base, the front roller and the rear roller are respectively connected with a roller end coupler through a servo hydraulic cylinder, the roller end coupler is connected with a motor end coupler through a torque sensor, the motor end coupler is connected with a motor through a speed reducer, the torque sensor, the speed reducer and the motor are all fixed on a mounting plate, a motor moving plate is arranged below the mounting plate at one end of the rear roller, and a plurality of sliding blocks are arranged at the bottom of the motor moving plate; the mandrel is fixed on the base through a bearing, and is sealed through a sealing ring, and the rotary joint consists of a spring, a reducing right-angle joint and an inner joint; the granulating disc group consists of a split drilling disc arranged at two ends of the front roller and a split pressing disc arranged at two ends of the rear roller, rotating shafts are arranged at symmetrical positions of two ends of the pressing disc, thrust bearings are arranged on end faces of the die tensioning mechanism, and a cutter is fixed at the end parts of the rotating shafts through screws.
The main body structure of the automatic discharging unit comprises a discharging slideway and a pneumatic vibration motor connected with the discharging slideway through a tension spring.
The main body structure of the mixing and conveying unit comprises a receiving hopper and a separator connected with the receiving hopper; the receiving hopper is connected with the receiving tray, the receiving hopper is connected with the separator through a conveying pipeline, the separator is fixed on a mounting frame arranged on the hopper, and a feeding pipeline connected with the separator extends into the hopper.
The invention relates to a spray cooling unit which is arranged on a fixed plate and consists of a spray pipeline and a spray header.
The temperatures of the front roller and the rear roller are controlled by the double-channel die temperature machine, the power of the die temperature machine is 13.5kW, the preset temperature can be reached within 30min, a drilling type strong pressurizing circulation heating/cooling mode is adopted, each channel is independently controlled, the temperatures of the front roller and the rear roller are more accurately regulated, the drilling type strong pressurizing circulation heating/cooling area is larger than that of the hollow circulation cooling area, the drilling type strong pressurizing circulation heating/cooling area is a single channel type, the pressure can be added, the circulation of water is pushed, the efficient heating/cooling is realized, meanwhile, the water flow detention time is short due to the addition of the water pressure, the feedback of the temperature is more accurate, and the hollow circulation cooling adopts a spraying or soaking mode and is related to the rotating speed; the gap between the front roller and the rear roller is detected by a displacement sensor positioned on a piston rod of the servo hydraulic cylinder, the displacement sensor is rigidly connected with the piston rod, and the position detection is more accurate; both ends of the front roller and the rear roller are provided with on-line infrared short wave temperature sensors, and safety alarm is carried out under the condition of overtemperature to timely warn operators.
When the circulation calendaring granulation device is used, materials are added into a double-station hopper through a feed port, and a pneumatic motor drives a material pouring screw rod to pour materials; the material changing plate driven by the material changing motor moves left and right to separate powder materials, the material conveying screw rotates to convey the materials to the discharging pipeline, the materials enter between the front roller and the rear roller, the front roller and the rear roller drive the materials to move so as to be dispersed into the granulating disc group, and the materials are granulated by the cutter to form granular materials; the granular materials enter a receiving hopper through a discharging slideway, and enter the hopper again after the granular materials are sent into a separator to complete the first granulation process through a pneumatic conveying vacuum feeder for cyclic granulation; in the process, the spray cooling unit is automatically started when dangerous conditions such as overtemperature or overpressure occur in the calendaring and granulating unit, cooling or depressurization is carried out, at the moment, the front roller and the rear roller are sprung open, and after the cyclic granulation is finished, the spray cooling unit is started to clean residual materials, so that smoothness is maintained.
Compared with the prior art, the automatic feeding unit carries out preliminary treatment on materials through the material pouring screw and the material conveying screw, the calendaring granulation unit carries out calendaring granulation on the materials, the automatic discharging unit sends the granular materials into the mixing conveying unit, the mixing conveying unit sends the granular materials into the automatic feeding unit again for cyclic granulation, in the process, the spray cooling unit carries out cooling or depressurization, the residual materials are cleaned, the smoothness is kept, the propellant materials can be automatically conveyed, the cyclic granulation is carried out for many times under different roller gaps and rotating speeds, and the method can be used for researching the dehydration effect and the mixing effect of different materials under different process temperatures, roller gaps, roller rotating speeds and roller surface combinations; the novel double-sided rolling granulation machine is simple in structure and reliable in performance, the rolling granulation unit is changed into a split type matching mode from an integral type, a double-sided driving mode is adopted, operation safety is guaranteed, transmission efficiency is improved, technical support is provided for researching the dehydration effect and mixing effect of different materials under different process temperatures, roller gaps, roller rotating speeds and roller surface combinations, and the novel double-sided rolling granulation machine has profound practical significance.
Description of the drawings:
Fig. 1 is a schematic diagram of the main structure of the present invention.
Fig. 2 is a schematic structural view of an automatic feeding unit according to the present invention.
Fig. 3 is a schematic partial structure of an automatic feeding unit according to the present invention.
Fig. 4 is a schematic structural view of the calendaring granulation unit according to the present invention.
Fig. 5 is a schematic plan view of the calender granulation unit according to the present invention.
Fig. 6 is a schematic partial structure of the calendaring granulation unit according to the present invention.
Fig. 7 is a schematic diagram of a drilling type forced pressurization circulation heating/cooling mode according to the present invention.
The specific embodiment is as follows:
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Example 1:
The main structure of the circulation calendaring granulation device according to the embodiment comprises an automatic feeding unit 10, a calendaring granulation unit 20, an automatic discharging unit 30, a mixing and conveying unit 40 and a spray cooling unit 50; a calendaring granulation unit 20 is arranged below the automatic feeding unit 10, the calendaring granulation unit 20 is connected with an automatic discharging unit 30, and the automatic discharging unit 30 is connected with the automatic feeding unit 10 through a mixing conveying unit 40 to form a circulation system; the automatic feeding unit 10 is also provided with a spray cooling unit 50; the main structure of the automatic feeding unit 10 comprises a hopper 101, a partition plate 102, a left hopper 103, a right hopper 104, a material pouring screw 105, a pneumatic motor 106, a supporting frame 107, a material inlet 108, a supporting plate 109, a left material outlet 110, a right material outlet 111, a material conveying screw shell 112, a left material outlet 113, a right material outlet 114, a supporting seat 115, a fixing plate 116, a material conveying screw 117, a transmission shaft 118, a coupling 119, a material changing port 120, a material outlet 121, a material changing plate 122, a material changing motor 123, a material discharging pipeline 124, a material blocking plate 125 and a material blocking motor 126; the hopper 101 is divided into a left hopper 103 and a right hopper 104 by a partition plate 102, a material pouring screw 105 is arranged in each of the left hopper 103 and the right hopper 104, the material pouring screw 105 is connected with a pneumatic motor 106, the pneumatic motor 106 is arranged on a supporting frame 107 fixed on the hopper 101, and a material inlet 108 positioned above the hopper 101 is also arranged on the supporting frame 107; the left hopper 103 and the right hopper 104 are respectively connected with a left discharging channel 110 and a right discharging channel 111 through a supporting plate 109, the left discharging channel 110 and the right discharging channel 111 are respectively connected with a left discharging opening 113 and a right discharging opening 114 which are formed in a material conveying screw shell 112, the material conveying screw shell 112 is arranged on a fixed plate 116 through a supporting seat 115, a material conveying screw 117 is arranged in the material conveying screw shell 112, one end of the material conveying screw 117 is connected with a coupler 119 through a transmission shaft 118, a material changing opening 120 is formed above the other end of the material conveying screw 117, a material outlet 121 is formed below the other end of the material conveying screw 117, a material changing plate 122 is arranged at the material changing opening 120, the material changing plate 122 is driven by a material changing motor 123, the material outlet 121 is connected with a material discharging pipeline 124, a baffle 125 is arranged in the material discharging pipeline 124, and the baffle 125 is driven by a material blocking motor 126; the main structure of the calendaring granulation unit 20 comprises a base 201, a front roller 202, a rear roller 203, a servo hydraulic cylinder 204, a roller end coupler 205, a torque sensor 206, a motor end coupler 207, a speed reducer 208, a motor 209, a mounting plate 210, a motor moving plate 211, a sliding block 212, a mandrel 213, a bearing 214, a sealing ring 215, a spring 216, a reducing right angle joint 217, an inner joint 218, a granulation disc group 219, a drilling disc 220, a pressing disc 221, a rotating shaft 222, a die tensioning mechanism 223, a thrust bearing 224, a cutter 225 and a screw 226; the base 201 is provided with a front roller 202 and a rear roller 203 which are meshed with each other, the front roller 202 and the rear roller 203 are respectively connected with a roller end coupler 205 through a servo hydraulic cylinder 204, the roller end coupler 205 is connected with a motor end coupler 207 through a torque sensor 206, the motor end coupler 207 is connected with a motor 209 through a speed reducer 208, the torque sensor 206, the speed reducer 208 and the motor 209 are all fixed on a mounting plate 210, a motor moving plate 211 is arranged below the mounting plate 210 at one end of the rear roller 203, and a plurality of sliding blocks 212 are arranged at the bottom of the motor moving plate 211; the inside of the front roller 202 and the inside of the rear roller 203 are respectively provided with a mandrel 213, the mandrels 213 are fixed on the base 201 by bearings 214 and are sealed by sealing rings 215, and the mandrels 213 are internally provided with rotary joints consisting of springs 216, reducing right angle joints 217 and inner joints 218; the outside of the front roller 202 and the rear roller 203 is provided with a granulating disc group 219, the granulating disc group 219 consists of a split drilling disc 220 arranged at two ends of the front roller 202 and a split pressing disc 221 arranged at two ends of the rear roller 203, two symmetrical positions of the two ends of the pressing disc 221 are provided with a rotating shaft 222, the periphery of the rotating shaft 222 is provided with a die tensioning mechanism 223, the end surface of the die tensioning mechanism 223 is provided with a thrust bearing 224, and a cutter 225 is fixed at the end part of the rotating shaft 222 through a screw 226; the main body structure of the automatic discharging unit 30 comprises a discharging slide 301 and a pneumatic vibration motor 302, and the discharging slide 301 is connected with the pneumatic vibration motor 302 through a tension spring 303; the main structure of the mixing and conveying unit 40 comprises a receiving tray 401, a receiving hopper 402, a conveying pipeline 403, a separator 404, a mounting frame 405 and a feeding pipeline 406; the receiving tray 401 is connected with the receiving hopper 402, the receiving hopper 402 is connected with the separator 404 through the conveying pipeline 403, the separator 404 is fixed on the mounting frame 405 arranged on the hopper 101, and the feeding pipeline 406 connected with the separator 404 extends into the hopper 101; the spray cooling unit 50 is disposed on the fixing plate 116 and is composed of a spray pipe 501 and a spray header 502.
An arch breaking device is arranged between the pneumatic motor 104 and the material pouring screw 105, so that material bridging is prevented; the material conveying screw shell 112 is a transparent shell, so that the material residue condition can be observed in real time, and correct treatment can be performed in time; the feeding screw 117 is a coreless screw feeding screw, which can prevent the feeding screw housing 112 from being damaged; the material of the discharging pipeline 124 is stainless steel, small holes are formed in the discharging pipeline, and after the material is conveyed, a blowing device is used for blowing residual materials in the discharging pipeline 124 through the small holes; the front roller 202 is a working roller with 24 circular arc grooves on the surface, the rear roller 203 is an idle roller with 36 triangular grooves on the surface, the diameters, the lengths and the length-diameter ratios of the front roller 202 and the rear roller 203 are the same, and the diameters, the lengths and the length-diameter ratios are 110mm, 220mm and 2:1, the driving mode of the front roller 202 and the rear roller 203 is that the rotation speed is driven and regulated by double servo motors, one roller is driven by one servo motor, the double servo motors are provided with a same-speed regulating module to carry out accurate same-speed control, the synchronism of the rotation speeds of the front roller 202 and the rear roller 203 is ensured, and the servo motors are independently controlled when stepless differential speed regulation is carried out; the servo hydraulic cylinder 204 has BT4 explosion-proof grade, has the functions of constant pressure rubber mixing and system safety spring opening, adopts explosion-proof and flame-retardant hydraulic oil to prevent danger, adjusts the distance between the front roller 202 and the rear roller 203 through hydraulic distance adjustment, fixes the front roller 202, flexibly moves the rear roller 203 through the motor moving plate 211 and the sliding block 212, and has quick and accurate travel distance adjustment and distance adjustment feedback action; the torque sensor 206 is an online torque sensor, and displays the torque in real time; the speed reducer 208 has a locking function, and is directly locked by braking when danger occurs; the motor 209 is a servo motor and is provided with a locking device to prevent accidents caused by inertia during emergency stop; the diameter of the granulating holes of the granulating disc group 219 is 6mm, the number of the granulating holes is 48/week, the granulating disc group is convenient to detach and replace, the residues of materials can be reduced, the granulating disc group is convenient to clean, granulating power is provided through self-pressing of the rear roller 203, the granulating diameters of different specifications can be replaced for experiments or production, the replacement is quick, and a triangular release area for reducing the pressure of the materials is arranged in a calendaring granulating working area so that the materials are extruded more uniformly from a granulating port; the die tensioning mechanism 223 can prevent the cutter 225 from interfering; the thrust bearing 224 adopts a double-framework oil seal, so that material dust is prevented from entering the groove of the thrust bearing 224, and the resistance caused by the tensioning force can be reduced; the receiving tray 401 is provided with small holes for water to flow and disperse; the conveying pipe 403 is a transparent hose, and prevents static electricity from being generated.
When the circulation calendaring granulation device is used, materials are added into the duplex hopper 101 through the feed port 108, so that powder and granules are separated, repeated mixing of the materials is prevented, and the pneumatic motor 104 drives the material pouring screw 105 to enter the left discharging channel 110 or the right discharging channel 111 for material pouring; the left and right actions of the material changing plate 122 driven by the material changing motor 123 enable the left discharging opening 113 and the right discharging opening 114 to be switched, powder materials are separated, the material conveying screw 117 rotates to convey the materials to the discharging opening 121, the residual condition of the materials is observed through the material conveying screw shell 112 made of transparent materials, when dangerous conditions such as mixing and stacking occur, the material blocking motor 123 drives the material blocking plate 125 to act, the discharging pipeline 124 is closed, and the operation safety is improved; the material passes through the discharge pipeline 124 and reaches between the front roller 202 and the rear roller 203, the roller end coupler 205 is matched with the motor end coupler 207, the dynamic and stable power output is realized, the front roller 202 and the rear roller 203 drive the material to move so as to be dispersed into the granulating disc group 219, and the granulating disc group 219 is granulated by the cutter 225 to form granular material; after the granular materials reach the discharge slideway 301, the pneumatic vibration motor 302 pulls the tension spring 303 to vibrate the discharge slideway 301, the granular materials overcome the water resistance under the vibration effect, enter the receiving hopper 402, the generated leaked materials fall into the receiving tray 401, the granular materials in the receiving hopper 402 are sent into the separator 404 through the conveying pipeline 403 by the pneumatic conveying vacuum feeder to complete the first granulation process, and then enter the hopper 101 again through the feeding pipeline 406 for circular granulation.
Claims (8)
1. The main structure of the automatic feeding unit comprises a hopper, a material pouring screw, a material conveying screw, a coupler, a material changing plate, a material changing motor, a material blocking plate and a material blocking motor; a material pouring screw rod is arranged in the hopper and is connected with the pneumatic motor, a material conveying screw rod is arranged below the hopper, one end of the material conveying screw rod is connected with the coupler, a material changing plate driven by the material changing motor is arranged above the other end of the material conveying screw rod, a material blocking plate driven by the material blocking motor is arranged below the material conveying screw rod, and the main structure of the calendaring granulation unit comprises a front roller, a rear roller, a roller end coupler, a motor moving plate, a mandrel, a granulation disc group, a rotating shaft, a die tensioning mechanism and a cutter; the front roller and the rear roller are respectively connected with a roller end coupler, the roller end coupler is connected with a motor end coupler, the motor end coupler is connected with a motor, and a motor moving plate is arranged below the motor at one end of the rear roller; the inner parts of the front roller and the rear roller are respectively provided with a mandrel, and a rotary joint is arranged in the mandrels; the outside of preceding roller and back roller is provided with granulation disc group, and the both ends symmetry department of back roller is provided with the rotation axis, and the periphery of rotation axis is provided with mould tensioning mechanism, and the cutter is fixed at the tip of rotation axis.
2. The circulation calendaring granulation device according to claim 1, wherein the hopper is divided into a left hopper and a right hopper by a partition plate, the pneumatic motor is arranged on a support frame fixed on the hopper, a feed inlet positioned above the hopper is further arranged on the support frame, the left hopper and the right hopper are respectively connected with a left feed channel and a right feed channel through support plates, the left feed channel and the right feed channel are respectively connected with a left feed channel and a right feed channel which are respectively arranged on a feed screw shell, the feed screw shell is arranged on a fixed plate through a support seat, the spray cooling unit is also arranged on the fixed plate, a feed screw is arranged in the feed screw shell, the feed screw is connected with a coupling through a transmission shaft, a feed inlet is arranged above the other end of the feed screw, a discharge outlet is arranged below the feed screw, a feed plate is arranged at the feed inlet, the discharge outlet is connected with a discharge pipeline, and a baffle plate is arranged in the discharge pipeline.
3. The circulation calendaring granulation device according to claim 2, wherein the front roller and the rear roller which are meshed with each other are arranged on the base, the front roller and the rear roller are respectively connected with a roller end coupler through a servo hydraulic cylinder, the roller end coupler is connected with a motor end coupler through a torque sensor, the motor end coupler is connected with a motor through a speed reducer, the torque sensor, the speed reducer and the motor are all fixed on a mounting plate, a motor moving plate is arranged below the mounting plate at one end of the rear roller, and a plurality of sliding blocks are arranged at the bottom of the motor moving plate; the mandrel is fixed on the base through a bearing, and is sealed through a sealing ring, and the rotary joint consists of a spring, a reducing right-angle joint and an inner joint; the granulating disc group consists of a split drilling disc arranged at two ends of the front roller and a split pressing disc arranged at two ends of the rear roller, rotating shafts are arranged at symmetrical positions of two ends of the pressing disc, thrust bearings are arranged on end faces of the die tensioning mechanism, and a cutter is fixed at the end parts of the rotating shafts through screws.
4. A circulation calendaring granulation apparatus according to claim 3, characterised in that the main body structure of the automatic discharging unit comprises a discharging slideway and a pneumatic vibration motor connected thereto by a tension spring.
5. The circulation calendering and granulating apparatus according to claim 4, wherein the main structure of the mixing and conveying unit includes a receiving hopper and a separator connected thereto.
6. The circulation calendering and granulating device according to claim 5, wherein the receiving hopper is connected with the receiving tray, the receiving hopper is connected with the separator through a conveying pipeline, the separator is fixed on a mounting frame arranged on the hopper, and a feeding pipeline connected with the separator extends into the hopper.
7. The circulation calendering granulation device according to claim 3, wherein the temperatures of the front roller and the rear roller are controlled by a two-channel die temperature machine, the power of the die temperature machine is 13.5kW, the preset temperature can be reached within 30min, a drilling type strong pressurizing circulation heating/cooling mode is adopted, each channel is independently controlled, the temperatures of the front roller and the rear roller are regulated, the drilling type strong pressurizing circulation heating/cooling is single-channel type, and the heating/cooling is realized by adding pressure and pushing water circulation; the gap between the front roller and the rear roller is detected by a displacement sensor positioned on a piston rod of the servo hydraulic cylinder, and the displacement sensor is rigidly connected with the piston rod, so that the position detection is facilitated; both ends of the front roller and the rear roller are provided with on-line infrared short wave temperature sensors, so that safety alarm can be carried out under the condition of overtemperature.
8. The circulating calendaring granulation apparatus according to claim 6, wherein in use, material is added into the duplex hopper through the feed port, and the pneumatic motor drives the material pouring screw to pour material; the material changing plate driven by the material changing motor moves left and right to separate powder materials, the material conveying screw rotates to convey the materials to the discharging pipeline, the materials enter between the front roller and the rear roller, the front roller and the rear roller drive the materials to move so as to be dispersed into the granulating disc group, and the materials are granulated by the cutter to form granular materials; the granular materials enter a receiving hopper through a discharging slideway, and enter the hopper again after the granular materials are sent into a separator to complete the first granulation process through a pneumatic conveying vacuum feeder for cyclic granulation; in the process, the spray cooling unit is automatically started when the calendaring and granulating unit has a dangerous condition of overtemperature or overpressure, and is cooled or depressurized, at the moment, the front roller and the rear roller are sprung, and after the cyclic granulation is finished, the spray cooling unit is started to clean residual materials so as to keep smooth.
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| CN202210516843.1A CN114905656B (en) | 2022-05-13 | 2022-05-13 | Circulation calendering prilling granulator |
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| JPH1060300A (en) * | 1996-04-18 | 1998-03-03 | Bayer Ag | Production of briquetted and pressed granule and its use |
| JP2006297788A (en) * | 2005-04-21 | 2006-11-02 | Japan Steel Works Ltd:The | Cutter holder and pelletizer |
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| CN114905656A (en) | 2022-08-16 |
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Inventor after: Wang Chuansheng Inventor after: Li Shaoming Inventor after: Hao Guoqiang Inventor after: ShangGuan Xushui Inventor after: Xu Zhenchun Inventor after: Hao Yingjie Inventor after: Qu Shengqi Inventor after: Hong Yufei Inventor after: Bian Huiguang Inventor after: Zhu Donglin Inventor before: Wang Chuansheng Inventor before: Hao Guoqiang Inventor before: Xu Zhenchun Inventor before: Hao Yingjie Inventor before: Qu Shengqi Inventor before: Hong Yufei Inventor before: Bian Huiguang Inventor before: Zhu Donglin Inventor before: Li Shaoming |
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