CN1748869A - A horizontal high pressure planetary roller mill - Google Patents

Abstract

The present invention relates to a kind of horizontal high-pressure planetary roller mill. The technological scheme is that the planetary roller mill has main shaft installed horizontally in the right and left bearing seats via bearings, right bearing seat installed inside the frame bearing seat, one driving wheel fixed to the end of the right bearing seat, the other driving wheel fixed to right end of the main shaft, mill ring jacket on the support roller, mill ring inside the mill ring jacket, horizontally installed spiral roller inside the mill ring, conic surface connection between mill ring and mill ring jacket, and screw connection between the mill ring jacket and the left bearing seat. The planetary roller mill has the features of homogeneous distribution of material, high crushing efficiency, fine granularity of the product and low power consumption.

Description

A horizontal high pressure planetary roller mill

1. Technical field

The invention belongs to crushing machinery. In particular, it relates to a horizontal high-pressure planetary roller mill.

2. Background technology

Raymond mill is widely used crushing equipment in non-metallic mineral industry (Wu Xuefeng. Development and practice of ultra-fine Raymond mill. China Non-metallic Mineral Industry Guide, 2001.1), which has the characteristics of stable performance, wide application range and large processing capacity. At present, there are mainly the following three problems in the use of Raymond mills: (1) Raymond mills crush materials mainly by driving the grinding rollers to rotate when the main shaft rotates to generate centrifugal force on the grinding ring to crush materials, but due to The spindle speed of the Raymond mill is low, and the pressure of the grinding roller on the material is not enough, resulting in low production efficiency; (2) The classification accuracy is poor, and the particle size of the general product can only be controlled between 100 and 325 mesh; (3) Due to the use of a blade to give Material, resulting in uneven feeding, it is easy to cause direct contact between the grinding roller and the grinding ring, resulting in high-frequency vibration and noise, which deteriorates the operating environment and aggravates the wear of the grinding roller and grinding ring.

In addition, although "a vertical planetary spiral roller mill" (ZL03254531.2) can increase the service life, reduce energy consumption, and reduce production costs, there are still: (1) due to vertical feeding and vertical discharge, there will be A small part of the material is directly discharged without being crushed in the machine, so the particle size of the material after crushing is uneven; (2) The residence time of the material in the mill is short, and the number of times of extrusion is small, so it is difficult to achieve ultra-fine crushing of the material; (3) ) The mill cannot evenly distribute the material, so the helical roller and the grinding ring will collide with each other and produce a "knocking cylinder" phenomenon, resulting in faster wear of the grinding roller and grinding ring.

3. Contents of the invention

The object of the present invention is to provide a horizontal high-pressure planetary roller mill that can distribute materials evenly in the mill, has high crushing efficiency, fine product particle size, and low energy consumption.

In order to accomplish the above tasks, the technical solution adopted by the present invention is: the main shaft is horizontally installed in the left bearing seat and the right bearing seat through the bearing, the right bearing seat is installed in the frame bearing seat, and a transmission is fixedly installed at the end of the right bearing seat. Wheel, the right end of the main shaft is also fixedly equipped with a transmission wheel, and the transmission wheel is either a belt transmission mode, a gear transmission mode, or a hydraulic transmission mode. The grinding ring sleeves are respectively connected with the left and right bearing housings and supported on the supporting rollers. A grinding ring is arranged in the grinding ring sleeve, and a helical roller is arranged in the grinding ring, and the helical roller is horizontally installed in two guide groove discs of the main shaft through the helical roller bearing seat.

Among them: the grinding ring and the grinding ring cover are connected by a tapered surface, the right end surface of the left bearing seat is pressed tightly on the left end surface of the grinding ring, and there is a gap between the grinding ring cover and the left bearing seat, which is connected by adjusting bolts.

The two guide groove disks are fixedly installed on the main shaft, and the inner sides of the two guide groove disks are provided with the same number of rectangular guide grooves as the helical rollers. Rubber spring rings are respectively installed on the inner sides of the two guide groove plates. The number of helical rollers installed in the two guide groove discs is 3 to 12. The pitch of the helical rollers is either all the same pitch, or a combination of different pitches, or a combination of smooth rollers and helical rollers. To or the same, or opposite. The helical roller is either a solid roller, or a threaded connection between the sleeve and the shaft, or a connection between the sleeve and the shaft through an elastic ring.

The left and right sides of the helical roller bearing seat are matched with the guide groove sides of the two guide groove discs respectively, and the end faces of the helical roller bearing seat that match the guide groove end faces of the two guide groove discs in the axial direction are all arc surfaces .

Due to the adoption of the above technical scheme, the present invention realizes the uniform distribution and effective crushing of the materials in the mill by separately driving the main shaft and the grinding ring, so that the materials can be evenly distributed in the mill, the crushing efficiency is high, and the product particle size is fine. Low consumption characteristics.

The present invention adopts the conical connection mode between the grinding ring and the grinding ring sleeve to change the force characteristics of the grinding ring, and applies adjustable pre-compression stress to the grinding ring, prolonging the service life of the grinding ring; The movement of three degrees of freedom can be generated in the disc, and the spiral roller can adapt to the change of material layer thickness, which can prevent jamming and partial grinding; the rotation of the grinding ring can make the material in the mill evenly distribute along the inner wall of the grinding ring under the action of centrifugal force , which prevents the direct contact between the spiral roller and the grinding ring, and avoids the phenomenon of "cylinder knocking"; the high-speed rotation of the main shaft can make the spiral roller generate enough centrifugal force to crush the material, and the combination of different pitches and directions of rotation of the spiral roller can make The material is squeezed and crushed enough times to realize the effective crushing of the material and reach the required product particle size.

4. Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a sectional view along A-A of Fig. 1 .

5. Specific implementation

The specific implementation of the present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a specific embodiment of the present invention, as shown in the figure, the main shaft [1] is horizontally installed in the left bearing seat [2] and the right bearing seat [10] through the bearing, and the right bearing seat [10] is installed in the machine In the frame bearing seat [13], a transmission wheel [12] is fixedly installed at the end of the right bearing seat [10], and a transmission wheel [11] is fixedly installed at the right end of the main shaft [1]; , the right bearing seat [2], [10] is connected and supported on the idler roller [14], the grinding ring [5] is provided with a grinding ring [4], and the grinding ring [4] is provided with a spiral roller [6] , the helical roller [6] is horizontally installed in the two guide groove discs [9] of the main shaft [1] through the helical roller bearing seat [7].

Among them: the grinding ring [4] and the grinding ring sleeve [5] are connected by a tapered surface, the right end surface of the left bearing seat [2] is pressed tightly on the left end surface of the grinding ring [4], the grinding ring sleeve [5] and the left bearing There is a gap between the seats [2] and they are connected by adjusting bolts [3].

The two guide groove disks [9] are fixedly installed on the main shaft [1], and the inner sides of the two guide groove disks [9] are provided with the same number of rectangular guide grooves as the helical rollers [6]. Rubber spring rings [8] are respectively installed on the inboards of the two guide groove discs [9]. The number of the helical rollers [6] installed in two guide groove discs [9] is 4, and the helical rollers [6] is a solid roller, and the pitch and the helical direction are all the same.

The left and right sides of the helical roller bearing seat [7] are matched with the guide groove sides of the two guide groove plates [9] respectively, and the helical roller bearing seat [7] is axially aligned with the guide grooves of the guide groove plate [9]. The matching end faces of the end faces are all arc faces.

When the motor drives the main shaft [1] through the pulley [11], the main shaft [1] rotates clockwise at a high speed as shown in the figure (viewed from the direction of the feed inlet), and another motor drives the grinding ring [4] through the pulley [12] to When rotating counterclockwise at a certain speed, the helical roller [6] will also revolve clockwise with the main shaft [1]. , the helical roller [6] produces the self-rotation in the counterclockwise direction along its own axis as shown in the figure at the same time.

During the working process of the mill, the spiral roller [6] is always in contact with the grinding ring [4] due to the centrifugal force. The generated centrifugal force makes the material evenly distributed along the inner wall of the grinding ring [4]. The centrifugal force generated by the high-speed rotating helical roller [6] produces extrusion, shearing and grinding effects on the material, thereby crushing the material. Driven by the spiral groove of the spiral roller [6], the material moves to the right along the axial direction of the grinding ring [4] on the inner wall of the grinding ring [4], and then is discharged along the direction of the discharge port shown in the figure.

Since this device adopts the transmission method of driving the main shaft [1] and the grinding ring [4] separately, the rotation of the grinding ring [4] can make the materials in the mill evenly distributed along the inner wall of the grinding ring [4] under the action of centrifugal force, preventing The helical roller [6] is in direct contact with the grinding ring [4]; the high-speed rotation of the main shaft [1] can make the helical roller generate enough centrifugal force to crush the material, and make the material be crushed enough times to reach the particle size of the product Require. Due to the adoption of the above measures, the materials can be evenly distributed and crushed effectively in the mill.

Claims (8)

1, a kind of horizontal high pressure planet roller mill, it is characterized in that described main shaft [1] is installed in left shaft holder [2], the right bearing seat [10] by the bearing level, right bearing seat [10] is installed in the housing bearing seat [13], be installed with drive [12] in the end of right bearing seat [10], the right-hand member of main shaft [1] is installed with drive [11]; Grinding ring cover [5] connects with left and right bearing block [2], [10] respectively, and be bearing on the carrying roller [14], be provided with grinding ring [4] in the grinding ring cover [5], be provided with propellers [6] in the grinding ring [4], propellers [6] are installed in two channeled disks [9] of main shaft [1] by propellers bearing block [7] level.

2, horizontal high pressure planet roller mill according to claim 1, it is characterized in that adopting between described grinding ring [4] and the grinding ring cover [5] conical surface to connect, the right side of left shaft holder [2] is pressed on the left side of grinding ring [4], leaves the gap between grinding ring cover [5] and the left shaft holder [2] and pass through to regulate bolt [3] to connect.

3, horizontal high pressure planet roller mill according to claim 1 is characterized in that described two channeled disks [9] are fixedly mounted on the main shaft [1], is provided with in the inboard of two channeled disks [9] and the same number of rectangle guide groove of propellers [6].

4, horizontal high pressure planet roller mill according to claim 1, the left and right two side faces that it is characterized in that described propellers bearing block [7] matches respectively with the guide groove side of two channeled disks [9], and propellers bearing block [7] is arc surface with the end face that the guide groove end face of channeled disks [9] matches vertically.

5, according to each described horizontal high pressure planet roller mill in the claim 1,3,4, it is characterized in that the inboard of described two channeled disks [9] is separately installed with rubber spring ring [8].

6, according to each described horizontal high pressure planet roller mill in the claim 1,3,4, the number that it is characterized in that the propellers [6] of installation in described two channeled disks [9] is 3～12, the pitch of propellers [6] or be identical pitch or for the combination of different pitch or be the combination of smooth roll and propellers entirely, the rotary orientation of propellers [6] or identical or on the contrary.

7, horizontal high pressure planet roller mill according to claim 6, it is characterized in that described propellers [6] or for solid roll for roller shell with the axle by thread connection or for roller shell with the axle link by elastic ring.

8, horizontal high pressure planet roller mill according to claim 1 is characterized in that described drive [11], [12] or for belt transmissioning mode or for gear transmission mode or be hydraulic transmission mode.

Images