JP4512682B2 - Solid material crushing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention Solid material crushing equipment In particular, the present invention relates to a suitable technique in which a solid is used after being powdered into fine particles.
[0002]
[Prior art]
The following are mentioned as related techniques for pulverizing a solid into fine particles.
(A) Technical Example 1: Japanese Patent Publication No. 07-004553 “Method of friction grinding of raw materials”
(B) Technical Example 2: Japanese Patent Publication No. 07-083840 “Crusher”
(C) Technical Example 3: Japanese Patent Laid-Open No. 11-300224, “Crusher”
(D) Technical Example 4: Japanese Patent Laid-Open No. 2000-061340 “Crusher”
[0003]
In Technical Example 1, raw materials are supplied between a first rotating body and a second rotating body that face each other and are independently driven. The raw materials are rubbed against each other and frictionally pulverized. This is a technique for recovery, and the center hole of the rotation shaft of the second rotating body is selected as an example of the discharge port.
Technical Example 2 is similar to Technical Example 1, except that the first rotating body has, for example, a plurality of blade shapes, and the second rotating body has, for example, a hole formed in the center of a disk, and the pulverized product has a rotational center. It collects to collect.
In Technical Example 3, the first and second rotary blades spaced from each other are attached to a single rotating shaft to rotate integrally, and as a whole, the pulverized material is sucked from the rotation center while guiding the raw material in the axial direction. I try to take it out.
Technical example 4 is similar to technical example 3, but in particular, a lid is attached to the casing at the tip of the rotating shaft to improve the convenience of disassembly.
[0004]
[Problems to be solved by the invention]
In each of the above-described technical examples 1 to 4, the solid raw material is rotated inside the casing, and in some cases, the raw material particles are brought into frictional contact with each other to promote pulverization. It is assumed that the finely divided pulverized product of the central portion classified by centrifugal force can be concentrated and removed, but there is no function to set the size of the pulverized particle size. However, it cannot be said that it can sufficiently cope with the variety of solid raw materials and the setting of the pulverization particle size, and lacks flexibility.
[0005]
The present invention has been made in view of the above circumstances, and achieves the following objects.
(1) Achieving lower costs and reducing running costs.
(2) To ensure the durability of the components in the crushing zone.
(3) Increase flexibility in changing and setting the pulverization particle size.
(4) To improve the maintainability of the crushing area and to easily change the solid material.
(5) To achieve downsizing and weight reduction of equipment.
(6) Obtaining a good quality powder oxide simultaneously with the pulverization of the material to be oxidized.
[0006]
[Means for Solving the Problems]
The present invention includes a solid material pulverizing method, an oxidized pulverized product manufacturing method, and equipment therefor.
[0007]
[Solid grinding method]
In the solids pulverization technology, the raw material to be pulverized is sent to the pulverization area by the rotary blades, and the pulverized raw material is pulverized by mutual friction while moving in the rotational direction. A technique of classifying in the direction and taking out a pulverized product having a desired particle size is employed.
As a material to be crushed, a solid material for pulverization to a desired particle size is selected, and a mineral dry product, a vegetable dry product, an animal dry product, or a combination thereof is an object.
The definition of the dried product does not limit the amount of moisture, but also means a product containing a small amount of moisture in a natural state.
Mineral dried products include industrial materials such as metals, carbon black, and abrasives.
In the case of dried plant products, foodstuffs, seasonings and medicines are included.
The dried animal products include edible parts, bones, shells, corals and shrimp shells.
As a means for feeding the material to be crushed to the pulverization zone, it is carried out by extruding, sucking, dropping, etc. while maintaining the particle size by preliminary pulverization, etc. Techniques such as guidance are adopted.
The pulverization area includes a range of an air flow generated in the vicinity of a range of a rotation locus generated by the rotation operation of the rotary blade.
The raw material to be crushed in the pulverization zone is gradually pulverized by frictional contact between the raw materials to be crushed while moving in the rotation direction of the rotary blades. Therefore, for example, when two pairs of rotating blades are rotated in the opposed state, the pulverization of the material to be pulverized is promoted by the opposite rotation directions.
The pulverized product in a pulverized state is classified such that those having a relatively large particle size and weight are guided radially outward based on centrifugal force, and those having a small particle size gather at the center of the pulverization zone.
Desirably, a pulverized product classified into a desired particle size or a pulverized product processed into a fine powder state is taken out to the outside.
The particle size of the pulverized product is adjusted by changing the number of rotations of the rotating blades, the interval between the rotating blades, the size of the pulverizing area, the position where the pulverized product is taken out, and the like.
During non-pulverization, parts such as the rotary blades and the pulverization zone are cleaned, and the internal cleaning is performed by rotating the rotary blades with the cleaning liquid or cleaning mist interposed in the vicinity of the pulverization zone. Is called. Excess cleaning liquid or the like is removed by a means for discharging, a means for sucking, a means for injecting and replacing a pressurized fluid, and the like.
[0008]
[Production method of oxidized ground product]
In the manufacturing technology of the oxidized pulverized product, the step of dropping the material to be crushed and supplying it to the pulverization zone by the rotating blades, the step of pulverizing by the mutual friction while moving the supplied material to be crushed in the rotation direction, and the movement In addition, the pulverized raw material is an oxide such as metal particles, and the pulverized region is set in an oxidizing atmosphere. The thing which oxidizes the surface of a grinding | pulverization raw material and makes it an oxidation state is contained.
If the heat generated during oxidation is large or if a rapid oxidation reaction is likely to occur in an oxidizing atmosphere, techniques such as cooling to maintain the pulverization zone in a safe range and reducing the amount of oxygen are adopted. .
Moreover, the technique which concentrates on the surface of microparticles | fine-particles and forms an oxide film is also included.
Examples of the powder oxide applied by this technology include those in which alumina, titanium oxide (titanium dioxide), other metal oxides, and the like are in a fine particle state.
The embrittlement temperature or the low temperature of the material to be crushed is also selected as the temperature of the pulverization zone that becomes the oxidizing atmosphere.
[0009]
[Crushing equipment for solids]
The solid material pulverization facility is a technique applicable to both the above-described solid material pulverization method and oxidation pulverized product manufacturing method.
The solid material pulverization equipment includes a casing that rotatably accommodates rotating blades that are pulverized by mutual friction while moving a raw material to be pulverized, an end plate that is disposed at an end of the casing and forms a pulverization zone, Guide means arranged in the pulverization zone to drop the raw material to be crushed and guided obliquely downward, raw material supply means arranged in a connected state to the pulverization zone and supplying the raw material to be crushed, and recovery means for collecting the pulverized product from the pulverization zone The technology it has is adopted.
The casing or the end plate portion is provided with guide means for guiding the material to be crushed supplied in a dropped state from the supply port toward the pulverization zone.
The casing portion is usually formed by pressing a steel plate or using a steel pipe, and an inner sleeve for defining a pulverization zone is disposed inside the casing.
The cross-sectional shape of the pulverization zone is not only circular but also non-circular.
The non-circular shape in this case usually includes regular squares, hexagons, octagons, and the like, and a portion that is formed in a swelled state outside the rotation trajectory of the rotary blade and becomes a dead space is used to cross the cross section. Based on the difference in surface shape, radial replacement of the object to be crushed is performed.
The end plate is formed so as to cover the inner surface of the mirror part of the casing as necessary.
The exposed surface that defines the pulverization zone, that is, the inner surface of the casing, the inner surface of the inner sleeve, or the inner surface of the end plate, such as the portion that forms the pulverization region, or the exposed surface that faces these areas, can be subjected to ceramic coating treatment, etc. A technology that has been subjected to wear resistance treatment is employed.
In a normal case, a connection outlet connected to the pulverization zone is arranged in a state of penetrating the casing.
The outlets are set to be adjustable by means such as whether a plurality of the outlets having different positions in the radial direction of the pulverizing area are installed in advance or are movably installed in the radial direction.
In addition, the take-out port is set to be adjustable by means such as whether a plurality of pulverized areas in which the position in the axial direction is changed are installed in advance or are movable in the axial direction. The
When the take-out port is slidably installed, set it so that it moves relative to the radial direction and axial direction, or inclines with respect to both, and simultaneously changes the extraction position of the pulverized product. Technology is also adopted.
In the crushing zone, the axial size is arranged so that it can be adjusted, so that the casing can be divided in the axial direction, and a bellows etc. is arranged at the divided part to ensure a sealing structure In addition, it is provided with a slide support means that enables the divided casing to move in the axial direction with respect to the base, and a configuration in which a lock means for fixing the moving part is arranged, and a mechanical collision is limited by restricting the movement amount. A technology for preventing the occurrence of this is also adopted.
In the case of the bellows portion, when the inner sleeve is installed, the bellows portion is arranged so as to be positioned outside thereof.
In the vicinity of the rotation center of the rotary blade, an auxiliary blade for driving the pulverized product in the axial direction is arranged integrally with the rotary blade, and forms a flow independent of the pulverization zone in the vicinity of the rotation center. A technique for facilitating removal of the pulverized product is applied.
When the rotating blades for forming the pulverization zone are arranged in pairs in the opposed state, a deviation is given to the rotation center of the rotating blades forming the pair, and the centrifugal state is caused by the difference in particle size and mass. Techniques for imparting turbulence and promoting agitation are also added.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show a first embodiment of a solids pulverizing facility according to the present invention.
FIG. 1 shows the overall configuration of a solids pulverization facility. In FIG. 1, symbol A is a pulverizer, B is a raw material supply means, C is a recovery means, D is a temperature adjustment means, E is a fluid supply means, F indicates a decompression means, and G indicates a drain system.
[0011]
As shown in FIG. 1, the pulverizer A forms a pulverization zone X and is divided into casings 11A and 11B, and rotary drive systems 12A and 12B arranged on the same axis with respect to the casings 11A and 11B. A rotation transmission shaft 13 connected to the rotation drive systems 12A and 12B and inserted into the casings 11A and 11B, a bearing portion 14 for supporting the rotation transmission shaft 13 in an airtight state, and a rotation transmission shaft 13 Dimensions for enabling adjustment of the facing distance between the pair of rotating blades 15A and 15B arranged in an opposed state at the tip and the pair of rotating blades 15A and 15B arranged in an intermediate state between the casings 11A and 11B. Slide support means 1 for supporting the absorption means (bellows) 16 and the casings 11A and 11B, the rotation drive systems 12A and 12B, the rotation transmission shaft 13, the bearing portion 14, and the like. The opposing distance between the bed 18 for attaching the slide support means 17 and the like, the lock means 19 for fixing the slide support means 17 to the bed 18, and the pair of rotary blades 15A and 15B. And a stopper 20 for setting to a minimum.
[0012]
The casings 11A and 11B are provided with heat radiating fins 11a on the surfaces thereof for improving heat contact with the outside air and radiating heat, and a cylindrical inner sleeve 21 is provided in order to form a pulverization zone X inside. The inner sleeve 21 is attached to the casing 11A in an integrated state by a fastening means 21a such as a bolt, and is set in a state in which the center position is set by a spacer 21b. Accordingly, the end plates 22A and 22B are attached so as to cover the inner surface of the mirror part of the casing 11A.
[0013]
The casings 11A and 11B and the inner sleeve 21 are usually formed by pressing a steel plate or using a steel pipe. The exposed surface of the inner surface facing the pulverization zone X is subjected to a ceramic coating process or the like. Wear-resistant treatment is applied.
As shown in FIG. 1, when an inner sleeve 21 for partitioning and forming the pulverization zone X is disposed inside the casings 11 </ b> A and 11 </ b> B, an inner surface of the inner sleeve 21 is subjected to wear resistance treatment. The wear resistance treatment on the inner surfaces of the casings 11A and 11B can be omitted or simplified.
In the embodiment shown in FIGS. 2 and 3, the cross-sectional shape of the inner sleeve 21, that is, the cross-sectional shape of the pulverization region X is set to be circular.
[0014]
In the embodiment shown in FIG. 1, in order to supply the raw material to be crushed to the pulverization zone X, the upper part of the casing 11A and the inner sleeve 21 is in a penetrating state and connected between the rotary blade 15A and the end plate 22A. A supply port 23 is arranged.
[0015]
Below the supply port 23, guide means 24 in a state of straddling the inner sleeve 21 and the end plate 22 </ b> A is disposed, and the dropped blade to be pulverized is used for its rotary blade 15 </ b> A using its weight and inclination. To send in the direction of.
[0016]
An extraction port 25 connected to the pulverization zone X and the recovery means C is disposed at a position shifted in the axial direction from the supply port 23 and between the rotary blade 15B and the end plate 22B.
[0017]
The raw material supply means B is optionally provided with a particle size selection means for supplying only particles of a desired size in advance, a coarse crushing means for aligning the particle size, and the like. A measurer 26 for supplying a constant amount, a supply device 27 for feeding a weighed object to be pulverized into the supply port 23 continuously or intermittently, and the like are applied.
[0018]
The recovery means C includes suction means such as a blower for sucking the pulverized product together with gas from the inside of the pulverizer A, filter means such as a bag filter for separating the pulverized product from a mixture of the pulverized product and gas, A measuring means for measuring the storage amount based on the weight of the pulverized product or the like, or a switching valve 28 for switching when a plurality of filter means are arranged is applied.
[0019]
The temperature adjusting means D is pulverized by circulating a cooling / heating medium supply means (water supply means) 29 for circulating a temperature adjustment cooling / heating medium and a refrigerant (cooling water) supplied from the cooling / heating medium supply means 29. In order to adjust the temperature of the zone X, one having a temperature adjusting plenum portion 30 arranged by making the casings 11A and 11B hollow or the like is applied.
[0020]
The fluid supply means E is a nitrogen gas supply system in FIG. 1, and sends a desired cooling gas (for example, nitrogen gas) into the pulverization zone X by jetting nitrogen gas obliquely through the supply port 23. It is supposed to be.
[0021]
The depressurizing means F includes a vacuuming means for sucking the air inside the pulverizer A into a vacuum atmosphere or a reduced pressure atmosphere, a regulating valve 31 for shutting off the inside and the outside of the pulverizer A, and the like. Things apply.
[0022]
As shown in FIG. 1, the drain system G is arranged in a connected state at the lower inner portions of the casings 11A and 11B, and for the purpose of discharging cleaning liquid and the like when cleaning the inside of the casings 11A and 11B. Arranged.
[0023]
The rotary drive systems 12A and 12B rotate the rotary blades 15A and 15B in opposite directions. In a normal case, the rotary blades 15A closer to the supply port 23 (hereinafter upstream) and closer to the take-out port 25 Although the setting is made so that the rotational speed of the rotary blade 15B (hereinafter downstream) is substantially the same, the upstream rotary blade 15A, which may be applied with a larger force in the initial stage of pulverization, than the downstream rotary blade 15B. However, the shape and the like may be set differently so that the mechanical strength is increased.
[0024]
The interval between the rotary blades 15A and 15B, that is, the axial size of the pulverizing zone X can be adjusted and set by the dimension absorbing means (bellows) 16, the slide support means 17, the bed 18, and the lock means 19. It is.
A plurality of slide portions 17a arranged on the slide support means 17 as required can be moved in the axial direction of the rotation transmission shaft 13 by the rail portions 18a arranged on the bed 18, and the lock blade 19 is released to release the rotating blades. The facing distance between 15A and 15B may be set to a desired dimension, and the slide support means 17 and the bed 18 may be mechanically integrated by the lock means 19 again.
At this time, the dimension absorbing means (bellows) 16 secures a sealing structure in a state where the casings 11A and 11B having a divided structure are airtightly connected and movable, and a flange is provided to the casings 11A and 11B as necessary. Separable from the part.
The dimension absorbing means 16 does not hinder the movement of the slide support means 17 and the bed 18, and the stopper 20 limits the movement amount to prevent the occurrence of a mechanical collision, and prevents the rotation blades 15 </ b> A and 15 </ b> B from moving. Minimize the facing distance.
In addition, in the part of the dimension absorption means 16, when installing the inner sleeve 21, it arrange | positions so that it may become the outer position, and a to-be-ground material and a pulverized product collide with the dimension absorption means 16 directly. It is set so that there is nothing.
[0025]
In the solids pulverization facility having such a configuration, prior to the pulverization operation, the decompression means F is operated to discharge the air in the casings 11A and 11B and, if necessary, the fluid supply means. (Nitrogen gas supply system) E is operated to form a non-oxidizing atmosphere by filling the inside of the casings 11A and 11B with nitrogen gas, and the operation of the cooling medium supply means (water supply means) 29 causes the casing 11A, A refrigerant (cooling water) or the like is circulated through 11B to keep the pulverization zone X in a low-temperature atmosphere (appropriate pulverization temperature).
[0026]
The size of the pulverization zone X (opposite dimensions of the rotary blades 15A and 15B) is determined by the slide portion 17a of the slide support means 17 and the rail portion 18a of the bed 18 based on the stretchability of the dimension absorbing means (bellows) 16. Is determined and fixed by the locking means 19.
[0027]
The raw material supply means B is actuated, and a desired amount of material to be crushed is introduced into the casings 11A and 11B from the supply port 23 by the measuring means 26 and the supply device 27.
At this time, the fluid supply means (nitrogen gas supply system) E is operated, and the object to be crushed is dropped into the casings 11A and 11B by using the jet power of nitrogen gas or the like, and in the vicinity of the supply port 23. You may make it suppress the stagnation in.
[0028]
In FIG. 1, the material to be crushed charged into the casings 11A and 11B is accurately dropped onto the guide means 24 at the inner bottom of the inner sleeve 21, and on the basis of the inclination, the downstream blades, It is guided in the direction crossing 15A.
[0029]
When the rotational drive systems 12A and 12B are operated, the material to be crushed in the casings 11A and 11B is rotationally driven in opposite directions by the rotary blades 15A and 15B that are rotationally driven so as to oppose each other. The
The objects to be pulverized located between the casings 11A and 11B, that is, in the pulverizing zone X are brought into contact with each other and pulverized by frictional action based on the opposite rotations.
[0030]
The pulverized product pulverized into fine particles is blown by the rotational force and centrifugal force of the rotary blades 15A and 15B, and a large mass (a large particle size) is a small mass outside the pulverization zone X ( The one having a small particle size) is classified so as to form a layer in the vicinity of the central portion, and, for example, the one pulverized into a fine powder state is taken out by operating the collecting means C and opening the switching valve 28.
Further, in FIG. 1, the recovery means C is shown in a simplified manner, but separation and collection technologies such as a bag filter and a cyclone for separating the pulverized product and the gas and capturing only the pulverized product, metal powder, A technique such as a water scrubber that is applied when recovering a pulverized product having a relatively large mass, such as being released into water and allowing a heavy material to settle, can be applied.
[0031]
FIG. 4 shows a second embodiment of the inner sleeve 21 in the solid material pulverization facility according to the present invention.
The inner sleeve 21 (second embodiment) is formed in a regular hexagon, and dead spaces deviating from the rotation locus S by the rotary blades 15A and 15B are formed at the six corners. By utilizing the fact that a vortex as shown by an arrow e in FIG. 4 is formed in the dead space, the pulverized product having a large particle size accumulated on the rotating outside by centrifugal force is stirred to improve the pulverization efficiency.
[0032]
5, (a) and (b) show the second and third embodiments of the guide means 24 in the solid material pulverization facility according to the present invention. In the second embodiment of FIG. The cross-sectional shape of the guide means 24 is a square tube-like shape. In the third embodiment shown in FIG. 5B, the cross-sectional shape of the guide means 24 is a triangular shape.
[0033]
FIG. 6 shows a second embodiment of the take-out port 25 in the solid material pulverization facility according to the present invention.
In accordance with FIG. 1, the take-out port 25, which has a protrusion length changed so as to pass through the casing 11 </ b> B and be connected to the pulverization zone X and to change the radial position, is previously positioned in the circumferential direction. A plurality of them are installed while shifting, and when the particle size of the pulverized product varies depending on the centrifugal separation, the pulverized product having a desired particle size can be taken out.
[0034]
FIG. 7 shows a third embodiment of the take-out port 25 in the solid material pulverization facility according to the present invention.
Even in the third embodiment, the take-out port 25 changes the protruding length so as to pass through the casing 11B to be connected to the crushing zone X and to change the radial position in accordance with FIG. In this case, the position is shifted in the axial direction of the pulverization zone X. In this case, too, when the particle size of the pulverized product varies depending on the centrifugal separation, a desired value is obtained. It is set so that a pulverized product of particle size can be taken out.
[0035]
FIG. 8 shows a fourth embodiment of the guide means 24 in the solid material pulverization facility according to the present invention.
In the guide means 24, the end plate 22A of the casing 11A is formed in a taper shape (conical shape), and the vicinity of the bearing portion 14 in the center portion has a shape protruding inward (grinding zone X). Combined using.
In the upper half, the dropped object to be crushed is guided toward the rotary blade 15A by the taper of the end plate 22A, and in the lower half, the object to be crushed falling across both sides is guided vertically from the taper. 24 is guided toward the rotary blade 15A.
[0036]
FIG. 9 shows a second embodiment of the slide support means 17 in the solid material pulverization facility according to the present invention.
In the slide support means 17, the slide portion 17 a and the rail portion 18 a of the bed 18 are positioned so as to be movable by sliding contact between the triangular groove and the mountain.
[0037]
10 (a) and 10 (b) show the third and fourth embodiments of the inner sleeve 21 in the solid material pulverization facility according to the present invention. In the third embodiment of FIG. The cross-sectional shape of the sleeve 21 is a vertically long elliptical cylinder, and in the fourth embodiment in FIG. 10B, the cross-sectional shape of the inner sleeve 21 is a horizontally long vertically long elliptical cylinder.
In these embodiments, based on the difference in shape between the ellipse and the rotation locus S, a vortex as shown by an arrow e in FIG. 10 is formed in the dead space deviated from the rotation locus S. The pulverized product having a large particle size accumulated on the outer side of the rotation by the centrifugal force is stirred to improve the pulverization efficiency.
[0038]
FIG. 11 shows a second embodiment of the rotary blades 15A and 15B in the solid material pulverization facility according to the present invention.
An auxiliary blade 32 for forcibly driving the pulverized product in the vicinity of the center portion downstream (in the axial direction) is disposed in the vicinity of the rotation center of the rotary blades 15A and 15B. The auxiliary blade 32 is, for example, a twisted blade, is rotated integrally with the rotary blades 15A and 15B, and the pulverized product and the finely divided pulverized product stagnating in the center portion are driven and replaced in the downstream direction. The efficiency of pulverization is improved, and the recovery efficiency of pulverized products is increased.
In this technique, a technique is adopted in which the auxiliary blade 32 is disposed at least on the rotary blade 15B at the downstream position and the driving of the pulverized product in the vicinity thereof is promoted.
[0039]
FIG. 12 shows a third embodiment of the rotary blades 15A and 15B in the solid material pulverization facility according to the present invention.
In the third embodiment, the rotary blades 15A and 15B are arranged in a state where the axes are intentionally shifted. By shifting the shaft, the pulverization zone X between the rotary blades 15A and 15B is not a straight cylinder but an obliquely shifted shape, and is a pulverized product in which a difference in particle size is likely to occur due to centrifugal force separation. It is expected to perform uniform crushing work while promoting the agitation and suppressing the separation action due to the particle size.
Note that the direction of shifting can be freely set, for example, one of up, down, left and right, or upstream or downstream.
[0040]
Hereinafter, the manufacturing technique of the oxidized pulverized product using the pulverization equipment will be described.
In the pulverization technique described so far, a cooling water or the like is supplied from the cooling medium supply means (water supply means) 29 in the temperature adjustment means D so that the atmosphere in the pulverization zone X does not become a high temperature atmosphere, or fluid supply means ( Nitrogen gas supply system E) Technology to supply nitrogen gas for the purpose of preventing oxidation and cooling was applied, but beyond these technical ranges, cooling technology that makes the temperature much lower than room temperature, and oxygen-containing gas during pulverization Is used to promote the oxidation reaction.
[0041]
In other words, when the raw material to be crushed is an oxide such as metal particles, the surface of the raw material to be pulverized is oxidized with the progress of the pulverization process while making an oxidizing atmosphere such as interposing oxygen in the pulverizing zone X. , It can be applied to the technology to make it into an oxidation state.
[0042]
In this pulverization or oxidation process, when heat generation during oxidation becomes large, or when a rapid oxidation reaction is likely to occur in an oxidizing atmosphere, a technique for maintaining the pulverized zone X in a safe range such as a non-explosive atmosphere, A technology that facilitates pulverization by supplying a cooling medium such as liquid nitrogen from the cooling medium supply means 29 and cooling it, and a technology that makes the amount of oxygen less than the concentration of air are adopted. .
[0043]
Moreover, the technique which concentrates on the surface by grind | pulverizing a to-be-ground material to a fine particle state, and forms an oxide film is also included.
Examples of the powder oxide applied by this technology include those in which alumina, titanium oxide (titanium dioxide), other metal oxides, and the like are in a fine particle state.
[0044]
[Other Embodiments]
The present invention includes the following techniques.
a) When the casings 11A and 11B or the inner sleeve 21 have a non-circular shape, the casing 11A, 11B or the inner sleeve 21 includes a shape other than a hexagon or an ellipse, for example, a regular square or an octagon.
b) When adopting a technique for projecting the take-out port 25 into the crushing zone X, the projecting amount should be adjusted by sliding.
c) Technology for changing the extraction position of the pulverized product while setting the extraction port 25 to be slid with respect to both the radial direction and the axial direction, or to be inclined with respect to both. Also adopt.
[0045]
【The invention's effect】
According to the present invention Solid material crushing equipment Provides the following effects.
(1) Cost reduction of the crusher can be achieved by making the casing and the inner sleeve steel.
(2) By exchanging the inner sleeve according to the degree of wear and fouling, the running cost during the operation of the pulverizer can be reduced.
(3) By adopting a structure in which the crushing region is surrounded by the inner sleeve, the durability of the constituent members can be enhanced.
(4) By arranging the size absorbing means to facilitate the setting of the size of the grinding zone, it is possible to increase the flexibility of changing and setting the grinding particle size, and to easily achieve refinement and high quality of the ground product. be able to.
(5) The combined use of the dimension absorbing means and the slide support means facilitates the separation and assembly of the casing, improves the maintainability of the crushing area, and facilitates the change of the solid material.
(6) The equipment can be made smaller and lighter by making the casing steel or guiding the guide means.
(7) By switching between the temperature adjusting means and the cooling medium supply means, the applicability to the manufacturing technology of the oxidized pulverized product can be improved, and a fine metal oxide can be manufactured.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing a block diagram of a first embodiment of a solid material pulverizing facility according to the present invention.
2 is a cross-sectional view of the vicinity of a rotary blade in FIG.
3 is a cross-sectional view of the vicinity of the guide means in FIG. 1. FIG.
FIG. 4 is a cross-sectional view showing a second embodiment of an inner sleeve in a solid material pulverizing facility according to the present invention.
FIGS. 5A and 5B show guide means in a solid material pulverization facility according to the present invention, wherein FIG. 5A is a left side view of the second embodiment, and FIG. 5B is a left side view of the third embodiment.
FIG. 6 is a left side view showing a second embodiment of the take-out port in the solid matter pulverization facility according to the present invention.
FIG. 7 is a front sectional view showing a third embodiment of the take-out port in the solid material pulverization facility according to the present invention.
FIG. 8 is a front sectional view showing a fourth embodiment of the guide means in the solids pulverizing facility according to the present invention.
FIG. 9 is a cross-sectional view showing a second embodiment of the slide support means in the solid matter pulverization facility according to the present invention.
FIGS. 10A and 10B show an inner sleeve in a solid material pulverization facility according to the present invention, in which FIG. 10A is a side sectional view of a third embodiment, and FIG. 10B is a side sectional view of a fourth embodiment.
FIGS. 11A and 11B show a second embodiment of a rotary blade in a solid material pulverizing facility according to the present invention, wherein FIG. 11A is a front sectional view and FIG. 11B is a side sectional view.
FIGS. 12A and 12B show a third embodiment of a rotary blade in a solids pulverizing facility according to the present invention, wherein FIG. 12A is a front sectional view and FIG. 12B is a side sectional view.
[Explanation of symbols]
A ... Crusher, B ... Raw material supply means, C ... Recovery means, D ... Temperature adjustment means, E ... Fluid supply means (nitrogen gas supply system), F ... Decompression means, G ... Drain system, S ... Rotation locus, X ... grinding area, 11A, 11B ... casing, 11a ... radiation fin, rotation drive systems 12A, 12B, rotation transmission shaft 13, bearing portion 14, rotary blades 15A, 15B, dimension absorbing means (bellows) 16, slide support means 17, Slide portion 17a, bed 18, rail portion 18a, lock means 19, stopper 20, inner sleeve 21, fastening means 21a, spacer 21b, end plates 22A and 22B, supply port 23, cooling gas supply system (nitrogen gas supply system) 23a , Guide means 24, outlet 25, metering means 26, supply device 27, switching valve 28, cooling medium supply means (water supply means) 29, temperature adjustment plenum 30, adjustment valve 31, auxiliary blade 3 .

Claims (7)

A casing (11A, 11B) that rotatably accommodates rotating blades (15A, 15B) that pulverize by mutual friction while moving the raw material to be crushed;
End plates (22A, 22B) arranged at the end of the casing and forming a grinding zone (X);
Guide means (24) arranged in the pulverization zone to drop the material to be crushed and guide it obliquely downward;
A raw material supply means (B) that is connected to the pulverization zone and supplies the raw material to be crushed, and a recovery means (C) that recovers the pulverized product from the pulverization zone;
Equipped with,
A solid outlet characterized in that an outlet (25) connected to the pulverization zone (X) is disposed, and the radial position of the pulverization zone at the outlet is set to be adjustable . Crushing equipment. The rotating blades (15A, 15B) are arranged in pairs in an opposing state,
  The rotating blades (15A, 15B) arranged in the opposing state are rotated in opposite directions, respectively, to accelerate the pulverization of the raw material to be pulverized, and the pulverized product in the pulverized state is relatively based on the centrifugal force. In addition, a large particle size and weight are guided outward in the radial direction of the rotary blade. 2. The solid material pulverizing equipment according to claim 1, wherein the pulverizing apparatus is configured to classify a small particle size at the center of the pulverization zone. The solid material pulverization equipment according to claim 1, wherein an auxiliary blade (32) for driving the pulverized product in the axial direction is disposed in the vicinity of the rotation center of the rotary blade (15A, 15B) . The solid material pulverization equipment according to any one of claims 1 to 3, wherein an inner sleeve (21) for defining a pulverization zone (X) is disposed inside the casing (11A, 11B). 5. The solid material pulverizing equipment according to claim 1, wherein the pulverizing zone (X) has a non-circular cross-sectional shape. 6. The solid material pulverizing equipment according to claim 1 , wherein the exposed surface that forms the pulverizing zone (X) is subjected to a wear-resistant treatment. The rotating blades (15A, 15B) are arranged in the section of the pulverization zone (X) ,
The rotating blades (15A, 15B) are arranged in a pair in an opposed state, and a shift is given to the rotation center of the rotating blades forming the pair,
The composition according to any one of claims 1 to 6, wherein agitation is promoted by disturbing a centrifugal separation state due to a difference in particle size and mass of the material to be pulverized by deviation of the rotation center. Solids crushing equipment.

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