CN-113334635-B - A mill for elastomer/plastic with improved milling mechanism

CN113334635BCN 113334635 BCN113334635 BCN 113334635BCN-113334635-B

Abstract

The invention provides an elastomer/plastic mill with an improved milling mechanism, which is characterized in that the mechanism is 1 or/and 2:1, waste plastic films or/and waste agricultural mulch films which are recycled by using waste paper which is coarsely processed by 2 meshes and has a bulk density of more than or equal to 0.06kg/L are used as calibration objects, the ratio of the product of the output W unit kg of a primary feeding mechanism to the product of the output H unit h of a time T unit and the rated power P unit kw of a main motor driving a milling disc shaft is Wkg Th/Pkw to be more than or equal to 1.30 kg.h/kw, and 2, the mechanism can be formed by using a modified screw and milling disc matching mechanism which is matched with the normal-temperature elastomer/plastic mill, and is characterized in that a single screw capable of realizing efficient feeding to the milling disc is matched with a rotary milling disc, and the single screw is formed by single or two screws which are arranged in series, at least one continuous helical tooth of a shaft is arranged from a section below a milling outlet of the milling disc, and the helical tooth quantity of the helical tooth is only required to be in the range of 1 to 2.

Inventors

CHEN HUIHONG
FEI JUN

Assignees

费军

Dates

Publication Date: 20260505
Application Date: 20210209
Priority Date: 20200303

Claims (3)

1. An elastomer/plastic mill with improved milling mechanism, comprising: The grinding mechanism uses a film/sheet-shaped waste plastic film or/and waste agricultural mulching film material with the sieve mesh of 2 meshes and the stacking density of more than or equal to 0.06kg/L as a calibration object when the feeding material normally passes through a slit surface in the middle of a dynamic/static grinding disc of the grinding mechanism, and the ratio of the product W unit kg of the passing machine product of the once-feeding grinding mechanism to the product H of the time T unit to the rated power P unit kw of a main motor driving a grinding disc shaft is W.T/P of more than or equal to 1.30 kg.h/kw, and after the calibration object is used for once-passing, the obtained material has particles which pass through a sieve of 10 meshes to a sieve range of more than 20 meshes, and the particles are in a strip shape of young silkworms; The single screw is a single or two feeding screws which are arranged in series and are arranged between an outlet of a grinding bin of the grinding machine to be crushed and an inlet ring center of a movable/static plane or a middle slit surface of a table cone rotary grinding disc for shearing grinding elastomer/plastic, or between the eccentric position, and the axial lead of the single screw is vertical to the middle slit plane of the movable/static plane rotary grinding disc or the table plane of the movable/static table cone rotary grinding disc; the single screw rod of the feeding, the working mechanism of which is contacted with the conveyed elastomer/plastic sequentially comprises a feeding section I, a force-applying compression pushing section II, a material holding pole resistant advancing section III, a rotating blade IV pushing the material into a middle slit of a dynamic/static grinding disc, a baffle plate part V preventing the material from contacting with the center of the dynamic disc, and a water cooling channel mechanism VI arranged at the center of the screw rod or/and a screw rod pipe jacket layer; The feeding section I is connected to the outlet of the feeding bin and before the compression pushing section is applied with force, the tooth pitch of one circle of single or/and double spiral teeth on a single screw rod of the feeding section is at least opposite to the length of the outlet of the feeding bin, namely the length a of the outlet of the feeding section is equal to or less than the tooth pitch sI of one circle of spiral teeth on the screw rod of the feeding section, the width b of the outlet of the feeding section is equal to or more than the diameter D I of the inner wall of a screw rod spiral conveying pipe of the feeding section, or/and the ratio of the volume V I conveyed by the spiral teeth of 1 unit of the feeding section I to the volume V II conveyed by the spiral teeth of 1 unit of the compression pushing section II is in the range of V I /V II = 1-10/1, and the diameter DI of the inner wall of the screw rod spiral conveying pipe of the feeding section I is equal to or more than the diameter D II of the screw rod spiral conveying pipe of the compression pushing section II; The setting quantity of the spiral teeth is in the range of 0.5-1-1.5 of rotation, the spiral tooth pitch s II is less than or equal to the spiral tooth pitch s I of the feeding section, the spiral tooth height h II is less than or equal to the spiral tooth height h I of the feeding section, the diameter D II of the inner wall of the spiral conveying pipe is equal to the diameter D I of the inner wall of the spiral conveying pipe of the feeding section when h II ＝h I is carried out, the inner wall of the spiral conveying pipe is in the conical shape of a truncated cone with the large end diameter D II /the small end diameter D II when h II ≤h I is carried out, the large end diameter D II is connected with the inner wall D I of the feeding section, the small end diameter D II is connected with the inner wall D III of the pipe of the feeding section III of the anti-material holding rod, or/and the ratio of the volume V II conveyed by the spiral teeth of 1 unit of the spiral feeding section I is V II /V I =1/1-10 when the spiral conveying volume V I is carried out by 1-1 unit of the feeding section I, or the spiral teeth is not required to be provided with the spiral teeth of 0 h II when the condition of V II /V I =1-10 is satisfied; The anti-material holding pole advancing section III is provided with no spiral teeth on the feeding screw shaft, and is provided with a screw shaft with gradually smaller diameter or/and a screw conveying pipe inner wall with gradually larger diameter; the rotary blade IV pushes the material into the middle slit of the movable/static grinding disc, and the rotary blade is provided with a vertical pushing working surface which rotates and pushes the material on the middle slit surface of the movable/static grinding disc, wherein the working surface is a straight vertical surface or an outward bending protruding surface facing the pushing direction; the baffle plate member V for preventing the material from contacting the center of the movable grinding disc is a feeding screw end part, the baffle plate member is circular, the diameter of the circular baffle plate member is at least 0.5mm compared with the diameter of an inlet circular ring of the movable grinding disc, or at least 0.5mm compared with the diameter of a circular cake-shaped concave ring of the center of the movable grinding disc, the thickness of the circular baffle plate member is at least 3mm, the surface facing the movable grinding disc is a feeding screw end surface, and a buffer gap between the circular cake-shaped concave ring of the center of the movable grinding disc is at least 2mm; The water cooling channel mechanism VI at the center of the screw rod or/and the screw rod pipe jacket layer is characterized in that a water inlet of a rotary joint is connected with a thin water inlet pipe at the center of the screw rod, and return water between the center of the screw rod and the thin water inlet pipe is led out through a water outlet of the rotary joint; The single screw rod of feeding is along the extreme end of feeding direction, and from moving the rotation center of mill, should leave at least not less than 2 mm's anticollision buffer clearance.
2. An elastomer/plastic mill with improved milling mechanism as claimed in claim 1, wherein the said gradually decreasing diameter comprises at least a screw shaft diameter decreasing by 2mm per 500mm of travel of the screw shaft, the said gradually increasing diameter comprises at least a screw pipe inner wall diameter increasing by 2mm per 500mm of travel of the screw pipe, or the said gradually decreasing diameter screw shaft is set at a starting point starting from the point of connection of the end of the feed section I of the screw shaft with the start of the compression pushing section II.
3. A grinding machine for elastomer/plastic materials with improved grinding mechanism according to claim 1, characterized in that the ratio of the product of the excess product W unit kg and the time T unit h to the rated power P unit kw of the main motor driving the grinding disc shaft is W.T/P≥8.44 kg.h/kw.

Description

A mill for elastomer/plastic with improved milling mechanism Technical Field The invention provides an elastomer/plastic mill with an improved milling mechanism, relates to a waste elastomer/plastic regeneration machine, in particular to a feeding screw mechanism matched with a fine grinding disc in a waste elastomer/plastic shearing milling fine crusher, and belongs to the category of machines involved in recycling waste polymer materials of the elastomer/plastic. Background In the prior art, normal-temperature fine crushing for recycling the elastomer/plastic waste polymer materials only refers to grinding type normal-temperature fine crushing for thermosetting elastomer/plastic, such as thermosetting vulcanized waste rubber of waste tires and the like, or crushing for thermosetting phenolic resin, wherein the normal-temperature grinding type fine crushing operation is mainly implemented by adopting a millstone fine crusher, and the feeding granularity is generally required to be in a range of 16-30 meshes when the grinding type fine crushing operation is implemented, and the crushed materials are required to have better fluidity when being pushed by a screw rod to feed gaps between a movable millstone and a static millstone. In the prior art, for materials which are difficult or extremely difficult to flow under the pushing force of a screw rod due to long strips, films and the like with thermoplastic and matchwood particles, normal machine passing operation cannot be smoothly implemented in the existing millstone type fine crusher, and the hindered appearance is that the materials can be held by a pole, namely the problem is that the materials are in a matching mechanism between a feeding screw rod and a millstone. In addition, in the prior art, even though the most successful crushing embodiment is regarded as a normal-temperature fine crusher, namely, pure waste tire coarse rubber powder which is sieved by a 20-mesh sieve is crushed by a crusher, the raw material is subjected to one-time crushing to obtain a product which is commonly called fine rubber powder in industry and has the granularity distribution of 40-200 meshes, the material which is finer than 100 meshes in the product is less than 5%, the material with 40 meshes is not less than 15%, and most of the material is about 60 meshes, and the material is about 80 meshes. Since the early 90 s of the last century, such fine crushers have been used mainly for fine crushing of waste thermosetting vulcanized rubber, and there have been very few reports on how to smoothly and efficiently crush a holding rod type material having thermoplasticity or poor flowability in a feeding mechanism of an existing fine crusher, and the like. The technical analysis of the feeding screw rod, the fine grinding disc and the matched mechanism of the existing grinding disc type fine crusher is more than that of the Chinese patent CN102211049B, and the feeding screw rod, the fine grinding disc and the matched mechanism thereof which are used at present have a plurality of defects, and the detailed analysis is carried out, and finally the problem that in the prior art, the normal-temperature fine crusher of the elastomer has the defects that a large amount of heat is generated before the material enters the fine grinding disc, the thermoplastic elastomer cannot be crushed, the particles cannot be crushed smoothly to form matchwood-shaped long strips or particles are coarser than 16 meshes of thermosetting elastomer material, the difficult-to-flow material which is difficult to turn at right angles under the pushing pressure of the screw rod cannot be processed, the crushed material of the grinding disc has higher coarse powder content and the like is finally summarized. ". The technical idea of the upper position of chinese patent CN102211049B is to provide an improved matching mechanism of a feeding screw and a fine grinding disc, which is applicable to an elastomer fine crusher, and the improved matching mechanism can be definitely "comprising: A. Adjusting a matching mechanism between the feeding screw and the millstone to largely reduce or eliminate the accumulation space of the crushed aggregates, wherein the improvement further comprises: B. On the premise of ensuring that the feeding has enough feeding pressure, the structure of the screw is adjusted, so that excessive high-pressure friction between the material and the inner wall of the spiral conveying pipe cavity is reduced, and heat generated in the conveying process of the material is removed or reduced, so that the feeding screw has the function of pushing the material to the feeding mouth of the millstone in a powerful vertical turning manner; C. The structural arrangement of the millstone feeding nozzle is improved, so that the millstone feeding nozzle can feed smoothly, and the fed coarse material can travel enough millstone crushing area to be finely crushed as much as possible. ". The applicant is one