CN201669824U

CN201669824U - Millstone structure of rubber grinding machine

Info

Publication number: CN201669824U
Application number: CN2010202041535U
Authority: CN
Inventors: 顾军; 顾洪
Original assignee: JIANGYIN XINDA MEDICINE AND CHEMICAL MACHINERY MANUFACTURING Co Ltd
Current assignee: JIANGYIN XINDA MEDICINE AND CHEMICAL MACHINERY MANUFACTURING Co Ltd
Priority date: 2010-05-27
Filing date: 2010-05-27
Publication date: 2010-12-15
Anticipated expiration: 2020-05-27

Abstract

The utility model relates to a millstone structure of a rubber grinding machine, comprising a movable millstone and a fixing millstone. The base end surfaces of the movable millstone and the fixing millstone are shallow-concave spherical surfaces, and the base arrays of the millstone end surfaces are provided with grinding blades. The height of the grinding blades are gradually higher than the end surfaces of the millstone spherical surfaces, namely the head parts of the blades near the centers of the millstones are highly projected out the base end surfaces, and the tail ends of the blades near the edges of the millstones are lowly projected out the base end surfaces. The millstone end surfaces are uniform spherical curves, so materials can not be blocked due to abrupt change of cross-section. The hard alloy blades are gradually higher than the end surfaces of the millstone spherical surfaces from the positions near the centers of the millstones to the positions near edges, so each of the blades effectively attend the grinding operation, and the abrasion is considerable after long-term operation. The millstone structure of the rubber grinding machine effectively increases the grinding yield, reduces the heat produced in grinding and prolongs the equipment life.

Description

The mill structure of rubber grinding machine

Technical field

The utility model relates to the rubber tooling field, and especially a kind of waste old reclaims process equipment.

Background technology

For example doughnut, sole etc. need be with rubber earlier by repeatedly being ground into the rubber micelle of 5 millimeter to reclaim the processing waste rubber goods, steel wire and the fiber that mix inside when removing the preparation tire, and then to utilize rubber grinding machine that the rubber micelle is ground be 40～200 purpose rubber powders.As utility model patent 200720039370.1 disclosed rubber grinding machines, referring to shown in Figure 1, the rubber grain material drops into from hopper 6, be delivered to grinding chamber 4 between fixed millstone 5 and the movable grinding disc 3 by feeding spiro rod 7, under the relative shear and rubbing action of the carbide chip of inlaying on movable grinding disc 3 and the fixed millstone 5 and welding, rubber grain ground be powder, and the exhausting collection conduit 10 by the bottom is with the powder sucking-off; The main motor (not shown) in bottom drives hollow spindle 2 by belt pulley 1 and drives movable grinding disc 3 rotations, and bottom motors 9 drives feeding spiro rod 7 swivel feedings by sprocket wheel 8; Because rubber is toughness material, crushing power is big, and fixed millstone 5 is very big with the caloric value of movable grinding disc 3, so mill is designed to the hollow cavity structure, feeds cooling water in hollow inside cavity and cools off; By worm-and-wheel gear 11, can regulate main shaft and then adjustment and carry out gap between fixed millstone 5 and the movable grinding disc 3, thereby obtain the powder of different fineness.

As shown in Figure 5, the movable grinding disc structure of present rubber grinding machine is for to weld a plurality of carbide chips 101 at circular millstone matrix 102 surperficial annular arrays, movable grinding disc center recessed 104, holding the rubber grain material that feeding spiro rod is sent in the through hole of fixed millstone central authorities, and carry to disc circumference by the chamfering 105 at edge.Anterior fluted 103 at carbide chip 101 makes the part of blade 101 be higher than mill matrix 102, with effective shearing rubber grain.But the end face of whole mill is smooth; The end face of in like manner relative fixed millstone also is the plane, is only exposing carbide chip near the central portion part.But this mill structure exists following problem: 1. movable grinding disc indented central, and the transition face changes of section is lofty, causes the concentrated and obstruction of rubber grain at the middle part easily, not only has influence on grinding output, and hot-spot can cause the softening and coking of rubber, causes equipment fault; 2. because mill needs cavity 106 water-coolings,, under long-time pressure effect, break easily because of the wall thickness of indented central part is thinner; 3. the blade part is higher than the mill matrix, and major part flushes with matrix surface, blade exposure portion serious wear, and shearing work can not be effectively participated at all the other positions, grinding efficiency is not high.

The utility model content

The applicant is at the mill unreasonable structure of above-mentioned existing rubber grinding machine, cause grinding and yield poorly, shortcomings such as equipment is fragile, provide a kind of rational in infrastructure, grind the mill structure of rubber grinding machine efficiently, effectively raise grinding output, reduce the heat that produces when grinding, prolonged equipment life.

The technical scheme that the utility model adopted is as follows:

A kind of mill structure of rubber grinding machine, comprise movable grinding disc and fixed millstone, the matrix end face of movable grinding disc and fixed millstone is the sphere of scrobicula, matrix arranged in arrays at the mill end face has skive blade, its highly gradient be higher than mill sphere end face, be that blade is higher near the head protrusion matrix end face of mill central authorities, blade is lower near the end protrusion matrix end face at mill edge.It is further characterized in that:

The central authorities of movable grinding disc are provided with cross and grind cutter, and it highly all protrudes from the end face of movable grinding disc matrix.

Mill end face of the present utility model is uniform spherical curve, therefore can not cause material to stop up because of the abrupt change of cross-section; Carbide chip near the gradual change of mill central authorities to edge be higher than mill sphere end face, so each part of blade all effectively participated in grinding operation, wearing and tearing quite after the long-term work; The utility model is shallow and even in the sphere depression of movable grinding disc middle part setting, therefore can not occur causing local wall thickness to cross living the breaking and damage of small property owing to being provided with cavity; The middle part is provided with the cross cutter and can not only discharges material effectively and uniformly, and can effectively improve grinding efficiency.

Description of drawings

Fig. 1 is for using the front view of rubber grinding machine of the present utility model;

Fig. 2 is a movable grinding disc stereogram of the present utility model;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the cutaway view in A-A cross section among Fig. 3;

Fig. 5 is the mill cutaway view of prior art, the same Fig. 4 of view direction.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.

Extremely shown in Figure 4 as Fig. 2, the end face on-plane surface of movable grinding disc described in the utility model and fixed millstone, but the sphere of a scrobicula, the end face of the middle section figure of movable grinding disc 3 demonstration is a camber line 304 as shown in Figure 4, the carbide chip 301 that length is arranged in matrix 302 arranged in arrays of mill end face, its highly gradient be higher than mill sphere end face 304, promptly to protrude matrix end face 304 near the head of mill central authorities higher for blade 301, it is lower that blade 301 protrudes matrix end face 304 near the end at mill edges.The central authorities of movable grinding disc 3 are not provided with pit, but inlay and be welded with cross carbide cutter tool 303, and it highly all protrudes from the end face 304 of movable grinding disc matrix 302.

During real work, as shown in Figure 1, the rubber grain material is delivered to grinding chamber 4 between fixed millstone 5 and the movable grinding disc 3 in the conveying of feeding spiro rod 7 by the through hole of fixed millstone 5 central authorities, movable grinding disc 3 rotates under the driving of main shaft 2, because movable grinding disc 3 central authorities are provided with cross carbide cutter tool 303, therefore can not produce the obstruction that bowl configurations causes, not only can effectively material be evenly distributed to circumferential grinding chamber 4, and can finish the work that part is sheared.Because movable grinding disc 3 is shallow sphere with the end face of fixed millstone 5, therefore cooperate back grinding chamber 4 to be the flying saucer shape, rubber grain is extruded to the edge from the middle part, and extruding force and shearing force that it is subjected to are increasing, has also just finished the process that is ground to powder from bulky grain; The final exhausting collection conduit 10 of bottom of passing through is with the powder sucking-off.Because carbide chip 301 is from being higher than mill sphere end face 304 near the gradual change of mill central authorities to edge, therefore each part of blade 301 has all effectively been participated in grinding operation, wearing and tearing quite after the long-term work, because grind the contact-making surface minimizing and effectively reduced the heat that produces when grinding, avoid the too high softening and coking that causes of rubber material Yin Wendu simultaneously.Because the end face of mill is uniform spherical curve, therefore can not cause material to stop up because of the abrupt change of cross-section.Because the utility model is shallow and even in the sphere depression of middle part setting, therefore can not occur causing the pit bottom wall thickness to cross living the breaking and damage of small property owing to being provided with cavity 305.

More than describing is to explanation of the present utility model, is not the qualification to utility model, and the utility model institute restricted portion is referring to claim, and under the situation of spirit of the present utility model, the utility model can be done any type of modification.

Claims

1. the mill structure of a rubber grinding machine, comprise movable grinding disc and fixed millstone, it is characterized in that: the matrix end face of described movable grinding disc and fixed millstone is the sphere of scrobicula, matrix arranged in arrays at the mill end face has skive blade, its highly gradient be higher than mill sphere end face, be that blade is higher near the head protrusion matrix end face of mill central authorities, blade is lower near the end protrusion matrix end face at mill edge.

2. the mill structure of rubber grinding machine as claimed in claim 1 is characterized in that: the central authorities of described movable grinding disc are provided with cross and grind cutter, and it highly all protrudes from the end face of movable grinding disc matrix.