JP2764218B2 - Vibration grinding classifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention crushes raw materials such as ores, sands, ceramics and the like to classify the crushed products, and converts raw materials such as chemicals, cosmetics, pigments, porcelain, molding sand and the like. The present invention relates to a vibrating pulverizing and classifying apparatus for manufacturing.

(Prior Art) Conventionally, a pulverizer such as an impact type pulverizer that pulverizes a raw material by a high-speed rotating impact plate or a vibratory pulverizer that pulverizes a raw material by applying vibration to a ball or a rod is used. The pulverized material having a target particle size was obtained by classifying the pulverized material by a classifier provided separately from the pulverizer.

(Problems to be Solved by the Invention) In a conventional pulverizer, a pulverized raw material is pulverized, and then a pulverized product having a target particle size is classified and taken out by a classifier. There is a problem that the variation in the particle size of the ground material becomes large and the particle size of the ground material is widely distributed.

The present invention has been made in view of the above-mentioned problems. The apparatus can be simplified and downsized, and can accurately classify a pulverized product having a target particle size. A first problem is to develop a vibration-pulverizing and classifying apparatus that can be improved, and a second task is to develop a vibration-pulverizing and classifying apparatus that can further improve crushing and classification efficiency.

(Means for Solving the Problems) As means for solving the first problem, in the vibrating pulverizing classifier according to claim 1, a large number of pulverizing media for pulverizing the pulverized raw material are accommodated and vibrated. The vibration tank to be installed is formed in an annular shape by the inner cylinder and the outer cylinder, and the inside of the annular space is divided into a plurality of crushing chambers in the circumferential direction by a partition member, and the width of each crushing chamber is from below in the circumferential direction. Each partition member is inclined so as to gradually increase upward, a raw material input port to each crushing chamber is opened in the vibration tank, and an inlet for a classification fluid is opened at the bottom of each crushing chamber, and each crushing chamber is opened. Above the crushing chamber is formed an annular classifying chamber extending substantially upward while substantially maintaining the total area of the upper ends of the crushing chambers. Establish an outlet to discharge and at least close to the lower edge of the outlet. At the ceiling of the inner cylinder is provided with an outlet for the classification fluid, and at the lower part of the inner cylinder is provided a recovery port for the crushed material. The configuration was such that the vibrating body was attached in a state of being directed substantially vertically.

Further, as means for solving the second problem,
According to a second aspect of the present invention, there is provided a vibration crushing and classifying apparatus according to the first aspect, wherein an obstacle member for forcibly transmitting vibration of the vibrating tank to the crushing medium is provided in the annular vibrating tank.

(Operation) In the vibration crushing and classifying apparatus according to the first aspect, the vibration crusher is configured as described above. The tank is vibrated in the circumferential direction, and a large number of pulverizing media accommodated in each of the crushing chambers and the classifying chamber are vibrated while rotating in the circumferential direction to efficiently pulverize the pulverized raw material supplied to each of the crushing chambers. At the same time, the width of the crushing chamber gradually increases from below in the circumferential direction, flows in from the bottom inlet of each crushing chamber, and the flow rate gradually decreases toward the upper end. The crushed material of the target particle size is classified by raising the crushed material of the smallest particle size that has been raised to the upper end of each crushing chamber by the classification fluid having the lowest flow rate and discharging from the discharge port. You.

In addition, by discharging the crushed material discharged from the classification chamber along the inner peripheral surface of the inner cylinder, the crushed material is attached to the inner peripheral surface side of the inner cylinder by centrifugal force and dropped downward, and the crushed material is dropped to the lower part. While recovering the pulverized material of the target particle size from the provided recovery port, a small amount of the pulverized material, which overcomes the centrifugal force and rides on the flow of the classification fluid and further rises, is blown out from the outlet provided on the ceiling. After that, it is separated and collected by a bag filter or the like.

Further, in the vibration pulverizing and classifying apparatus according to the second aspect, the collision and contact between the pulverizing media are complicated by the obstruction member, the pulverization of the pulverized raw material is performed very finely, and more efficient pulverization and classification can be performed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

 First, the configuration of the first embodiment will be described.

As shown in FIGS. 1 to 4, a vibration crushing and classifying apparatus A of this embodiment mainly includes a vibration tank 1, a raw material supply device 2, and a vibration motor 3 as main components.

The vibrating tank 1 is a tank for crushing a crushed raw material by vibrating the crushed raw material and a crushing medium in a housed state, and a plurality of crushed raw materials on a base 4 that can be fixed to a floor surface. It is provided so as to be able to vibrate through the coil spring 5.

The vibration tank 1 is formed in an annular shape by a large-diameter cylindrical outer cylinder 10 and a small-diameter cylindrical inner cylinder 11, and the annular space is divided into four crushing chambers 6 in the circumferential direction. And by inclining each partition member 60 so that the width in each crushing chamber 6 gradually increases from below in the circumferential direction, the cross-sectional area of each crushing chamber 6 gradually increases from below. Is formed.

At the bottom of each crushing chamber 6, there is provided a bottom plate 61 having a large number of inlets 61a for allowing the classification fluid to flow, and an annular ring is provided between each bottom plate 61 and the substrate 12 of the annular vibration tank 1. A classification fluid distribution passage 13 is formed, a classification fluid supply port 14 is opened in the substrate 12, and a blower (not shown) is connected to the supply port 14 via a flow rate regulating valve (not shown). Have been.

Above each crushing chamber 6, an annular classifying chamber 7 extending upward while substantially maintaining the area of the upper end of each crushing chamber 6 is provided.
Is formed, and a discharge port 70 is opened in the upper part of the classifying chamber 7 so as to penetrate the inner cylinder 11 and discharge the classification fluid along the inner peripheral surface of the inner cylinder 11. The upper surface of each crushing chamber 6 and the upper surface of the inner cylinder 11 are an annular top plate 71 and a circular top plate.
Each is closed by 15.

In the center of the circular top plate 15, an outlet 8 for discharging the pulverized material together with the classification fluid to the outside of the vibrating tank 1 is opened, and a dust collector, a cyclone and the like (not shown) are provided at the outlet 8. A hopper 16 is connected to the lower portion of the inner cylinder 11 and collects pulverized material at a central portion, and a collection port 9 provided at the bottom of the hopper 16 has a pipe leading out of the vibration tank 1.
17 is connected.

In addition, between each outlet 70 and the outlet 8, each outlet 70
A guide cylinder 18 is provided to guide the classification fluid discharged along the inner peripheral surface of the inner cylinder 11 downward first, and then raise the classification fluid to promote separation of the classification fluid from the pulverized material.

Then, a discharge port 70 in the classifying chamber 7 is provided from each crushing chamber 6.
A large number of spherical grinding media B are accommodated before reaching the lower edge.

In addition, the outer cylinder 10 near the bottom of each crushing chamber 6 has
The raw material input ports 62 for inputting the raw materials are respectively opened.

The raw material supply device 2 is a means for evenly distributing and supplying the crushed raw material G to each of the raw material input ports 62, and a bottom portion of an annular distribution pipe 20 provided so as to surround an outer periphery of the outer cylinder 10. And a raw material supply port 23 having an open / close valve 22 is connected to the upper surface of the distribution pipe 20. A hopper and the like (not shown) are connected to the cylinder 23.

The vibrating motor 3 constitutes a vibrating body for vibrating the annular vibrating tank 1 in a circumferential direction. In this embodiment, the vibrating motor 3 is provided at a lower position of opposing left and right outer peripheral surfaces of the vibrating tank 1.
Vibration motors 3, 3 are provided via brackets 30, 30, respectively. The respective vibration motors 3, 3 move the axis of their rotating shafts from the vertical state slightly in the circumferential direction of the vibration tank 1 (1).
(Approximately 3 °)).

 Next, the operation of the embodiment will be described.

Since the vibration pulverizing and classifying apparatus A of this embodiment has the above-described configuration, first, when the two vibration motors 3, 3 are operated, the vibration directions of the pendulums in the two vibration motors 3, 3 are synchronized in the circumferential direction. The tank 1 is vibrated so as to make a reciprocating rotational movement mainly in the circumferential direction, that is, the center of the vibrating tank 1 with a slight vertical movement substantially along the circumferential direction. By the action, a large number of the crushing media B accommodated in each of the crushing chambers 6 and the classifying chambers 7 are rotated little by little in the circumferential direction while vibrating.
The flow of the crushing medium B moving in each of the crushing chambers 6 along the slope thereof in a substantially V-shape, flowing over the upper end of each partition member 60 and flowing into the adjacent crushing chamber 6 via the inside of the classifying chamber 7. Will happen.

Then, in this state, when the opening and closing valve 22 of the raw material supply device 2 is opened to supply the raw material G to the raw material supply cylinder 23,
The pulverized raw material G dropped and supplied from the raw material supply cylinder 23 into the annular distribution pipe 20 vibrates in the same distribution pipe 20 by vibrating action such as to make a circular motion substantially along the outer peripheral surface of the vibration tank 1. It is transferred in one direction, distributed and supplied to the inner bottom of each crushing chamber 6 via each branch pipe 21 and the raw material inlet 62, and is efficiently crushed by the vibration action of each crushing medium B described above. Become.

Then, when the blower is operated to feed the classification fluid to the supply port 14, the classification fluid flows into the respective crushing chambers 6 via the annular classification fluid distribution passage 13 and the inflow ports 61a opened in the respective bottom plates 61. While being supplied, the classification fluid flows in the crushing chamber 6 upward from its lower end so that the flow velocity gradually decreases, and at each position in the crushing chamber 6, each crushed material pulverized by the crushing medium B has a crushing chamber. The classification fluid that flows upward at each flow rate respectively defined by the cross-sectional area of each position in 6 is blown.

The crushed material having a gravitational force equal to or higher than the blowing force of the classification fluid crushed at each position in the crushing chamber 6 and flowing at each position is stagnated or settled without being blown up by the classification fluid, while being classified at each position. The pulverized material having a gravitational force equal to or less than the fluid blowing force is blown up by the classifying fluid at each flow rate, and rises to a position where the classified fluid having a blasting force less than the gravitational force of the crushed material flows.

In this way, the above operation is repeated for the crushed material of each particle size, and the layers of the crushed material having substantially the same particle size are laminated and distributed in the crushing chamber 6 from the lower layer to the upper layer so that the particle size gradually decreases. You. The crushed material H having the smallest particle size rises to the upper end of the crushing chamber 6, and the particle size of the crushed material H rising to the upper end becomes the target particle size. Classification chamber 7 which extends upward while maintaining the total area substantially and whose cross-sectional area is narrowed down by containing grinding medium B
The pulverized material H, which has been blown up by the classification fluid having the lowest flow velocity rising inside the classification chamber 7 to classify the pulverized material H having the target particle size from among the pulverized materials of each particle size, and has risen to the upper end of the pulverization medium B. Is discharged into the inner cylinder 11 from each discharge port 70.

Then, the pulverized material H having the target particle size discharged from each outlet 70 along with the classification fluid along the inner peripheral surface of the inner cylinder 11 is attached to the inner peripheral surface side of the inner cylinder 11 by centrifugal force due to the flow of the classification fluid. The separation fluid is separated from the classification fluid by a U-turn from the lower end of the guide tube 18 toward the center and rises to the outside of the vibration tank 1 through the outlet 8 and separated from the classification fluid. Crushed material H that has fallen down along the inner peripheral surface of 11
Is collected by a hopper 16 provided thereunder, and collected by a collecting port 9.
From the vibrating tank 1 through the pipe 17.

The classified fluid that has flowed out of the outlet 8 is discharged to the atmosphere after passing through a bag filter, a dust collector, and the like to separate and recover a small amount (about 3%) of the crushed material H contained in the classified fluid. Will be.

Therefore, in the vibration crushing and classifying apparatus A of the present embodiment,
While crushing the crushed raw material G sequentially, each crushed material is sequentially raised to a position where the crushed material can be blown up by the classification fluid against the gravity thereof, and only the crushed material H having the target particle size raised to the upper end of the crushing chamber 6 is classified. 7, the pulverized material H having the target particle size can be classified accurately and efficiently from the pulverized material group of each particle size, the particle size of the classified pulverized material H can be leveled, and the pulverization and classification steps can be streamlined. At the same time, the pulverization of the pulverized raw material G and the classification of the pulverized material H having the target particle size can be performed simultaneously in the annular space, so that the mechanism can be greatly simplified and compacted.

Further, since the inside of the hollow portion of the inner cylinder 11 can be effectively used as an installation space for a cyclone for separating the classification fluid and the pulverized material H, the apparatus can be made compact, and the vibration generated by the vibration motor 3 constituting the vibrator can be achieved. The vibration of the tank 1 can be effectively used for the action of accelerating the fall of the crushed material H in the cyclone.

Further, since the crushing chamber 6 is provided on the outer peripheral portion of the vibration tank 1 having a large amplitude, crushing efficiency can be improved.

In addition, the inclination of the partition member 60 that partitions each crushing chamber 6 facilitates the rotation of the crushing medium B in the crushing chamber 6, and the crushing medium B vibrates with the rotation to achieve higher crushing. The effect will be obtained.

Also, by storing the pulverizing medium B in the classification chamber 7, the classification fluid having the lowest flow rate is caused to flow in the classification chamber 7.
The pulverizing medium B in each of the crushing chambers 6 is pressurized with the weight of, and the pulverized raw material G is efficiently pulverized by the pressurized pulverization, and the pulverized material H in a floc state is crushed by the pulverizing medium B in the classification chamber 7. Since the pulverized material larger than the target particle size can be dropped into the crushing chamber 6, the classification accuracy can be improved.

Further, in the embodiment, the classifying chambers 7 are communicated in a ring shape, so that the grinding medium B in each of the crushing chambers 6 flows in the circumferential direction,
The top surface can be made uniform horizontally, and the flow between the crushing chambers 6 can make the distribution of the amount and size of the crushing medium B uniform.

Further, in the embodiment, the annular distribution pipe 20 surrounding the outer circumference of the outer cylinder is used as the raw material supply device 2, so that the crushed raw material can be evenly distributed in each crushing chamber 6 by using the vibration action of the vibration tank 1. And it can distribute and supply efficiently.

Further, in the embodiment, each of the vibration motors 3, 3 is provided so that the axis direction of the rotation axis thereof is substantially vertical, so that the vertical vibration of the device is extremely small, and therefore, The transmission of vertical vibration of the device becomes very small, and the device can be made larger.

Next, a vibration classifier according to a second embodiment of the present invention will be described with reference to FIG.

This vibration classifier is characterized in that a baffle bar (baffle member) C for forcibly transmitting the vibration of the vibration tank 1 to the pulverizing medium B is provided in the vibration tank 1. The other configuration is the same as that of the first embodiment, and the description is omitted.

Therefore, in this vibration classifier, the baffle C
Collision and contact between the pulverization media B are finely performed, and efficient classification can be performed.

The embodiments of the present invention have been described in detail with reference to the drawings.
The specific configuration is not limited to this embodiment,
Even a design change or the like within a range not departing from the gist of the present invention is included in the present invention.

For example, in the embodiment, the inside of the classifying chamber 7 is communicated in a ring shape, but all or a part of each crushing chamber 6 may be partitioned by a partition plate.

Further, in the embodiment, the raw material inlet 62 is provided near the bottom of each crushing chamber 6, but may be provided above the crushing chamber 6 or above the classifying chamber 7.

Further, in the embodiment, the case where the two vibration motors 3 constituting the vibrating body are used is shown, but the number of used vibration motors is arbitrary.

The shape and material of the pulverizing medium B are also arbitrary. For example, ceramics, metal, and the like are used as the material.

As the classification fluid, any gas such as nitrogen gas is used in addition to air.

Further, in the second embodiment, the case where the bar-shaped baffle bar C is used as the baffle member and the bar-shaped baffle bar C is provided between the cylindrical outer cylinder 10 and the cylindrical inner cylinder 11 in a horizontal state has been described. The mounting direction and the like are arbitrary. For example, a baffle plate having a plurality of large-diameter holes may be provided in a direction perpendicular to the moving direction of the crushing medium B.

(Effect of the Invention) As described above, in the vibration crushing and classifying apparatus according to claim 1, each partition member is inclined such that the width of each crushing chamber gradually increases from below in the circumferential direction.
In the vibrating tank, raw material input ports to each crushing chamber are opened,
An inlet for the classification fluid is opened at the bottom of each crushing chamber, and an annular classification chamber is formed above the crushing chamber and extends upward while substantially maintaining the total area of the upper end of each crushing chamber. At the upper part of the chamber, a discharge port for discharging the pulverized material along with the classification fluid along the circumferential surface of the inner cylinder was opened, and the pulverization medium was filled at least to the vicinity of the lower side edge of the discharge port, whereby each of the pulverized materials was discharged. It is possible to accurately classify the pulverized product of the target particle size from among the pulverized products of the particle size and to equalize the particle size of the pulverized product, and to greatly simplify and downsize a device for pulverizing and classifying the pulverized product. become.

In addition, a vibrating tank in which a large number of pulverization media for pulverizing the pulverized raw material are accommodated and vibrated is formed by an inner cylinder and an outer cylinder into an annular shape, and the inside of the annular space is divided into a plurality of In addition to partitioning the chamber into chambers, the vibrating chamber is provided with a vibrating body in a state where the axis of the rotation axis is oriented substantially vertically, so that the crushing chamber is located on the outer peripheral portion of the vibrating chamber having the largest amplitude. Therefore, the crushing efficiency can be improved.

Also, as described above, by inclining the partition member that partitions each crushing chamber, the rotation of the crushing medium in the crushing chamber becomes easy, and therefore, a higher crushing effect is obtained by the vibration action of the crushing medium accompanying this rotation. Can be obtained.

In addition, an outlet for the classification fluid is provided at the ceiling of the inner cylinder, and a pulverized material recovery port is provided at the lower part of the inner cylinder. The pulverized material is discharged along with the classification fluid along the inner peripheral surface of the inner cylinder. By opening the discharge port so as to make it possible to effectively use the inside of the hollow portion of the inner cylinder as an installation space for the cyclone for separating the classification fluid and the pulverized material, the device can be made compact and the vibrator The vibration of the vibrating tank caused by the above can be effectively used for the action of accelerating the falling of the crushed material in the cyclone.

Also, by storing the pulverizing medium in the classifying chamber, the classifying fluid having the lowest flow rate is caused to flow in the classifying chamber, so that the pulverizing medium in each of the pulverizing chambers is reduced by the weight of the pulverizing medium stored in the classifying chamber. Pressurized, the pulverized raw material is efficiently pulverized by the pressurized pulverization, and the pulverized material in the floc state is disintegrated with the pulverizing medium in the classification chamber, and the pulverized material larger than the target particle size can be dropped into the crushing chamber. , The classification accuracy can be improved.

Also, by setting the mounting direction of the vibrating body so that the axis direction of the rotation axis is substantially perpendicular, it is possible to eliminate the vertical vibration of the device installation part based on the vertical vibration of the device,
As a result, effects such as an increase in the size of the device can be obtained.

In the vibration crushing and classifying apparatus according to claim 2,
Providing the baffle member in the vibrating tank increases the collision and contact efficiency between the pulverizing media, thereby obtaining the effect of further improving the pulverization and classification accuracy.

[Brief description of the drawings]

1 is a front view showing a vibration crushing and classifying apparatus according to a first embodiment of the present invention, FIG. 2 is a vertical side view of the same, FIG. 3 is a transverse sectional view taken along the line II of FIG. 2, and FIG. FIG. 5 is a perspective view of an essential part showing an internal structure, and FIG. 5 is a perspective view of an essential part showing a vibration crushing and classifying apparatus of a second embodiment of the present invention. 1: Vibration tank 3: Vibration motor (vibrator) 6: Crushing chamber 7: Classification chamber 8: Outlet 9: Recovery port 10: Outer cylinder 11: Inner cylinder 60: Partition member 61a: Inlet (of classified fluid) 62 : Material input port 70: Discharge port B: Grinding medium C: Disturbing rod (disturbing member) G: Grinding raw material H: Grinding material

Claims (2)

(57) [Claims] 1. A vibrating tank for accommodating a large number of crushing media for crushing a crushed raw material and being installed so as to be able to vibrate is formed in an annular shape by an inner cylinder and an outer cylinder, and the inside of the annular space is formed into a circle by a partition member. A plurality of crushing chambers are circumferentially partitioned, and each partition member is inclined such that the width of each crushing chamber gradually increases from below to above in the circumferential direction. Establish a flow inlet for classification fluid at the bottom of each crushing chamber, and form an annular classification chamber above and above the crushing chamber and extending upward while substantially maintaining the total area of the upper end of each crushing chamber. In the upper part of the classifying chamber, an outlet for discharging the pulverized material along the inner peripheral surface together with the classification fluid is opened, and the pulverizing medium is filled at least near the lower edge of the outlet, and An outlet for the classification fluid is provided at the ceiling, and the pulverized material is The mouth is provided, wherein the vibration chamber, vibration pulverizing and classifying apparatus characterized by fitted with a vibrator in the axial direction of the rotary shaft substantially in a state of vertically oriented. 2. The vibration-pulverizing and classifying apparatus according to claim 1, wherein an obstacle member for forcibly transmitting vibration of the vibration tank to the pulverizing medium is provided in the vibration tank.