CN201537507U

CN201537507U - Double-layer screen-type grinder

Info

Publication number: CN201537507U
Application number: CN2009203149012U
Authority: CN
Inventors: 付敏; 王述洋
Original assignee: 东北林业大学
Priority date: 2009-11-17
Filing date: 2009-11-17
Publication date: 2010-08-04

Abstract

A double-layer screen-type grinder relates to a grinder and aims to solve the problem that the present grinder has low effective brokenness and poor sieving performance, and causes large grinding particle size, low yield and great energy consumption. Each ring-shaped hammer carrier plate is sleeved on a main shaft, a group of pin holes are formed on each ring-shaped hammer carrier plate, a pin is arranged in each pin hole, a through hole is formed at one end of each hammer cutter, a pin is mounted in the through hole of the hammer cutter, two end plates are fixedly connected with the inner wall of the casing, a sieve plate on the inner side is vertically and detachably connected with the two end plates, at least one group of bottom cutters is mounted on the inner wall of the sieve plate on the inner side in the axial direction, a sieve plate on the outer side is detachably connected with the two end plates, the sieve plate on the outer side and the sieve plate on the inner side are arcs having same arc radians ranging from 180 defrees to 360 degrees, the sieve plate on the outer side is positioned outside the sieve plate on the inner side, and a coarse material discharge port and a fine material discharge port are formed on a base. The grinder is used for grinding materials.

Description

Double deck screen formula pulverizer

Technical field

The utility model relates to a kind of pulverizer.

Background technology

Existing beater grinder generally is made up of body, motor, rotor, hammer cutter and single-deck screen, utilizes the hammer cutter of rotation at a high speed in pulverizing chamber material to be hit, cuts, and the material that granularity is qualified is discharged by the sieve aperture of screen cloth.In single-deck screen formula pulverizer, material has just entered pulverizing chamber, and to be subjected to effective hitting power very big, then under the drive of hammer knife up speed rotation, material quickens, do unidirectional rotatablely moving with the hammer cutter, form one deck circulation layer, reduced the relative velocity of material and cutter, the validity of cutter comminuting matter is reduced, influenced the material grinding particle size and further reduced; Because action of centrifugal force abuts against on the screen cloth coarsegrain material, hindered qualified small grain size material and in time sieved simultaneously, caused production efficiency low, also can produce crushing phenomenon and cause energy consumption to increase.Above-mentioned these problems are more serious in grinding particle size is broken less than the fine powder below 20 orders and when requiring pulverizer output high, become the technical bottleneck in the broken field of scale fine powder.

The utility model content

The purpose of this utility model provides a kind of double deck screen formula pulverizer, to solve effective brokenness low, the sieve ability of existing pulverizer to material, cause the product grinding particle size big, yield poorly and problem that energy consumption is big.

The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: described pulverizer comprises motor, main shaft, casing and support; The bottom and the support of described casing are affixed, are provided with charging aperture on the top of casing, and described main shaft is fixed on the support, and the output shaft of described motor is connected with spindle drive; Described pulverizer also comprises outer sieve plate, the internal layer sieve plate, two end plates, at least one group of bed plate, at least one group of hammer cutter, a plurality of bearing pins and a plurality of hammer frame plate, described a plurality of hammer frame plate is positioned at the inside of internal layer sieve plate, each hammer frame plate is an annular, each annular hammer frame plate is solidly set on the main shaft, along the circumferential direction evenly be provided with one group of pin-and-hole near excircle endface position place on each hammer frame plate, a bearing pin is housed in each pin-and-hole, one end of each hammer cutter is provided with through hole, bearing pin is contained in the through hole of hammer cutter, described two end plates are arranged on the two ends of internal layer sieve plate and affixed with the inwall of casing, described internal layer sieve plate respectively with two vertical removably connecting of end plate, described internal layer sieve plate, the cavity that end plate and casing surround is a pulverizing chamber, the inwall of described internal layer sieve plate is equipped with at least one group of bed plate vertically, every group of bed plate evenly is provided with along the circumferencial direction of internal layer sieve plate inwall, described outer sieve plate is arranged between two end plates, described outer sieve plate and two end plates removably connect, the radian that described outer sieve plate and internal layer sieve plate are circular shape and circular arc is 180 °-360 °, the screen size of the circular arc number of degrees of described outer sieve plate and outer sieve plate identical with the circular arc number of degrees of internal layer sieve plate is less than the screen size of internal layer sieve plate, described outer sieve plate is positioned at the outside of internal layer sieve plate, described support is provided with coarse fodder discharging opening and fines discharging opening, and the coarse fodder discharging opening is between internal layer sieve plate and outer sieve plate, and the fines discharging opening is positioned at the outside of outer sieve plate.

The utlity model has following beneficial effect: 1. the utility model is provided with two-layer sieve plate, has improved the ability of sieving, and internal layer sieve plate installed inside has bed plate, and bed plate cooperates the hammer cutter that material is played the assisted machining effect, improves the effective brokenness to material greatly; The existence of bed plate has simultaneously also destroyed the high-speed loop fluid layer of material, has increased the speed of related movement of material and hammer cutter, thereby has improved the effective hitting dynamics of hammer cutter to material, helps reducing of comminuting matter size granularity, has avoided the product grinding particle size excessive.In the utility model two-layer sieve plate be provided with the needed fine powder particle of easy acquisition degree, effectively improve screening efficiency, cut down the consumption of energy, crush efficiency can improve 20～40% than single-deck screen formula pulverizer.3. the material between the two-layer sieve plate of the utility model can be sent pulverizing chamber back to and continued to be pulverized after the coarse fodder discharging opening is regularly derived; the structure of double-deck screening is produced the product that two kinds of different grain sizes require; be applied in the industries such as grain, feed, light industry, chemical industry, and carry out the broken most pronounced effects of scale fine powder less than 20 purpose materials for grinding particle size.

Description of drawings

Fig. 1 is an overall structure front view of the present utility model, and Fig. 2 is the right view of Fig. 1, and Fig. 3 is the A point enlarged drawing of Fig. 1, and Fig. 4 is the expansion schematic diagram of internal layer sieve plate 6.

The specific embodiment

The specific embodiment one: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the pulverizer of present embodiment comprises motor 1, main shaft 2, casing 3 and support 4; The bottom of described casing 3 and support 4 are affixed, are provided with charging aperture 3-1 on the top of casing 3, and described main shaft 2 is fixed on the support 4, and the output shaft of described motor 1 and main shaft 2 are in transmission connection; Described pulverizer also comprises outer sieve plate 5, internal layer sieve plate 6, two end plates 7, at least one group of bed plate 8, at least one group of hammer cutter 9, a plurality of bearing pins 10 and a plurality of hammer frame plate 12, described a plurality of hammer frame plate 12 is positioned at the inside of internal layer sieve plate 6, each hammer frame plate 12 is an annular, each annular hammer frame plate is solidly set on the main shaft 2, along the circumferential direction evenly be provided with one group of pin-and-hole 12-1 near excircle endface position place on each hammer frame plate 12, be fixed with a bearing pin 10 in each pin-and-hole 12-1, one end of each hammer cutter 9 is provided with through hole 9-1, bearing pin 10 is contained in the through hole 9-1 of hammer cutter 9, each bearing pin 10 and one group of hammer cutter 9 are rotationally connected, described two end plates 7 are arranged on the two ends of internal layer sieve plate 6 and affixed with the inwall of casing 3, described internal layer sieve plate 6 respectively with two end plates, 7 vertical removably connecting, described internal layer sieve plate 6, the cavity that end plate 7 and casing 3 surround is a pulverizing chamber, the inwall of described internal layer sieve plate 6 is equipped with at least one group of bed plate 8 vertically, every group of bed plate 8 evenly is provided with along the circumferencial direction of internal layer sieve plate 6 inwalls, described outer sieve plate 5 is arranged between two end plates 7, described outer sieve plate 5 and two end plates 7 removably connect, the radian that described outer sieve plate 5 and internal layer sieve plate 6 are circular shape and circular arc is 180 °-360 °, the screen size of the circular arc number of degrees of described outer sieve plate 5 and outer sieve plate 5 identical with the circular arc number of degrees of internal layer sieve plate 6 is less than the screen size of internal layer sieve plate 6, described outer sieve plate 5 is positioned at the outside of internal layer sieve plate 6, described support 4 is provided with coarse fodder discharging opening 4-1 and fines discharging opening 4-2, and coarse fodder discharging opening 4-1 is between internal layer sieve plate 6 and outer sieve plate 5, and fines discharging opening 4-2 is positioned at the outside of outer sieve plate 5.

The specific embodiment two: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the order number of the outer sieve plate 5 of present embodiment is the 6-80 order.Other compositions and annexation are identical with the specific embodiment one.

The specific embodiment three: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the order number of the internal layer sieve plate 6 of present embodiment is the 3-70 order.Other compositions and annexation are identical with the specific embodiment one.

The specific embodiment four: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, the pulverizer of present embodiment also comprises a plurality of spacers 11, is set with a plurality of spacers 11 on the bearing pin 10, and each spacer 11 is between adjacent two hammer frame plates 12.The advantage of this kind syndeton is that the hammer cutter is separated.Other compositions and annexation are identical with the specific embodiment one.

Operation principle: during work, the material that need are pulverized enters pulverizing chamber by charging aperture 3-1; Motor 1 is given main shaft 2 with transmission of power, drive hammer frame plate 12, bearing pin 10 and 9 rotations of hammer cutter on the main shaft, impact material, play main pulverization, the bed plate 8 that internal layer sieve plate 6 is provided with cooperates 9 pairs of materials of hammer cutter to play the assisted machining effect, the existence of bed plate 8 has simultaneously also destroyed the high-speed loop fluid layer of material, the screening of the qualified material of size by outer sieve plate 5 is after fines discharging opening 4-2 discharges, and the material between the two-layer sieve plate can be sent pulverizing chamber back to and be continued to be pulverized after coarse fodder discharging opening 4-1 regularly derives.

Claims

1. double deck screen formula pulverizer, described pulverizer comprises motor (1), main shaft (2), casing (3) and support (4); The bottom of described casing (3) and support (4) are affixed, are provided with charging aperture (3-1) on the top of casing (3), and described main shaft (2) is fixed on the support (4), and the output shaft of described motor (1) and main shaft (2) are in transmission connection; It is characterized in that described pulverizer also comprises outer sieve plate (5), internal layer sieve plate (6), two end plates (7), at least one group of bed plate (8), at least one group of hammer cutter (9), a plurality of bearing pins (10) and a plurality of hammer frame plate (12), described a plurality of hammer frame plate (12) is positioned at the inside of internal layer sieve plate (6), each hammer frame plate (12) is an annular, each annular hammer frame plate is solidly set on the main shaft (2), each hammer frame plate (12) is gone up near excircle endface position place and along the circumferential direction evenly is provided with one group of pin-and-hole (12-1), be fixed with a bearing pin (10) in each pin-and-hole (12-1), one end of each hammer cutter (9) is provided with through hole (9-1), bearing pin (10) is contained in the through hole (9-1) of hammer cutter (9), each bearing pin (10) is rotationally connected with one group of hammer cutter (9), described two end plates (7) are arranged on the two ends of internal layer sieve plate (6) and affixed with the inwall of casing (3), described internal layer sieve plate (6) respectively with vertical the removably connecting of two end plates (7), described internal layer sieve plate (6), the cavity that end plate (7) and casing (3) surround is a pulverizing chamber, the inwall of described internal layer sieve plate (6) is equipped with at least one group of bed plate (8) vertically, every group of bed plate (8) evenly is provided with along the circumferencial direction of internal layer sieve plate (6) inwall, described outer sieve plate (5) is arranged between two end plates (7), described outer sieve plate (5) removably connects with two end plates (7), the radian that described outer sieve plate (5) and internal layer sieve plate (6) are circular shape and circular arc is 180 °-360 °, the screen size of the identical and outer sieve plate (5) of the circular arc number of degrees of the circular arc number of degrees of described outer sieve plate (5) and internal layer sieve plate (6) is less than the screen size of internal layer sieve plate (6), described outer sieve plate (5) is positioned at the outside of internal layer sieve plate (6), described support (4) is provided with coarse fodder discharging opening (4-1) and fines discharging opening (4-2), and coarse fodder discharging opening (4-1) is positioned between internal layer sieve plate (6) and the outer sieve plate (5), and fines discharging opening (4-2) is positioned at the outside of outer sieve plate (5).

2. double deck screen formula pulverizer according to claim 1, the order number that it is characterized in that described outer sieve plate (5) is the 6-80 order.

3. double deck screen formula pulverizer according to claim 1, the order number that it is characterized in that described internal layer sieve plate (6) is the 3-70 order.

4. double deck screen formula pulverizer according to claim 1 is characterized in that described pulverizer also comprises a plurality of spacers (11), is set with a plurality of spacers (11) on the bearing pin (10), and each spacer (11) is positioned between adjacent two hammer frame plates (12).