CN203886611U - Inner scraper knife of Raymond mill main machine - Google Patents

Abstract

The utility model discloses an inner scraper knife of a Raymond mill main machine. The inner scraper knife comprises a scraper knife panel, a scraper knife baffle, a scraper knife bracket and scraper knife panel streamline slots, wherein an included angle alpha between the scraper knife bracket and the scraper knife panel is 20 to 50 degrees, and most preferably, the included angle alpha is 35 degrees; the cross sections of the scraper knife panel streamline slots are cambered. Two designs are adopted: 1, the included angle alpha between the scraper knife bracket and the scraper knife panel is 20 to 50 degrees, and 2, 1 to 10 scraper knife panel streamline slots are formed, so that smashed materials in the Raymond mill main machine can be thrown into a space between a milling roller and a milling ring to the maximum extent; therefore, the smashing quality and the smashing efficiency of the Raymond mill main machine are improved.

Description

Perching knife in Raymond mill main frame

Technical field

The utility model relates to a kind of perching knife, concrete relates to perching knife in a kind of Raymond mill main frame.

Background technology

Raymond mill is a kind of milling equipment, and it can grind micro mist and fine particle sprills, is a kind of new flour miller that substitutes ball mill processing powder.A whole set of structure by: main frame, analytical engine, plumbing installation, air blast, finished product cyclone separator, palate crusher, winnowing pan bucket elevator, electro-vibrating feeder, electronically controlled motors etc. form.It is a covering device, and wherein nucleus equipment is Raymond mill main frame, and it is made up of frame, air intake spiral case, perching knife, grinding roller, bull ring, case and motor.Raymond mill main frame grinds principle: drive central shaft to rotate by transmission device, the upper end of axle is connecting plum blossom frame, Burnisher apparatus is housed on frame and forms to swing fulcrum, its grinding roller is not only around main shaft gyration, also be that because of rubbing action, grinding roller itself also can rotation round bull ring revolution simultaneously.Perching knife system is equipped with in plum blossom frame lower end, and its position is in grinding roller lower end, and perching knife and grinding roller are with turning in journey, material is scooped up and thrown between feeding grinding roller and bull ring, form the bed of material, this bed of material is subject to grinding roller rotation to produce outside centrifugal force, and material is just extruded and pulverizes between grinding roller and bull ring.Roll through many times grinding roller rotation, material is just ground into the powder of micron order fine particle shape.

In order to improve the abrasive dust efficiency of Raymond mill main frame, someone has carried out some technological innovations to Raymond mill main frame, Chinese patent: ZL200920298110.5, patent name: the perching knife of Raymond mill, just the shape of perching knife cutter having been carried out to some innovations optimizes, perching knife side plate is arc unfilled corner structure near the top, one end of discharging opening, has realized the optimization that direction that material is dished out and material are shed face.Improved part crush efficiency, but efficiency not also very high.Trace it to its cause, what perching knife still can not be more scoops up material between throwing feeding grinding roller and bull ring, thereby has affected crush efficiency.So perching knife structure still needs to improve.

Summary of the invention

The utility model provides perching knife in a kind of Raymond mill main frame, having solved perching knife in existing Raymond mill main frame can not as much as possiblely scoop up material to throw between feeding grinding roller and bull ring, thereby affect the defect of Raymond mill main frame crush efficiency, particularly solved the defect that Chinese patent ZL200920298110.5 exists.

For the problem addressing the aforementioned drawbacks, the utility model has adopted following technical scheme: perching knife in a kind of Raymond mill main frame, formed by perching knife baffle plate and perching knife panel, it is characterized in that: perching knife panel has 1-10 bar perching knife panel streamline groove, and perching knife support and perching knife panel angle α are 20 °-50 °.

Perching knife in described a kind of Raymond mill main frame, perching knife panel streamline groove depth and width are respectively 1-5 millimeter, perching knife panel streamline groove cross section is arc.

The beneficial effects of the utility model: the one, perching knife support and perching knife panel angle α the best are 35 °, and can tune up and turn down, the material hardness grinding according to Raymond mill main frame and granular size are adjusted angle α, its objective is and allow more abrasive material throw between feeding grinding roller and bull ring, improve the abrasive dust efficiency of Raymond mill main frame; The 2nd, perching knife panel 1-10 bar arcuate stream line groove can allow the very fast and more throwing of abrasive material feed between grinding roller and bull ring, has improved pulverizing quality and the efficiency of Raymond mill main frame.

Brief description of the drawings

Fig. 1 is that the utility model is contained in the structural representation in Raymond mill main frame; Fig. 2 is the utility model structural representation; Fig. 3 is perching knife panel streamline groove schematic diagram in the utility model.

Symbol description in Fig. 1, Fig. 2 and Fig. 3: perching knife baffle plate 1, perching knife panel 2, perching knife support 3, perching knife support and perching knife panel angle α 4, perching knife panel streamline groove 5.

Detailed description of the invention

As shown in Figure 1, Figure 2 and Figure 3, perching knife baffle plate 1 is connected to perching knife panel 2 outers, has certain altitude; Perching knife panel streamline groove 5 is on perching knife panel 2 surfaces, perching knife panel streamline groove 5 is 1-10 bar arcuate stream line groove, and the best is 3, and perching knife panel streamline groove 5 cross sections are arc, perching knife panel streamline groove depth and width are respectively 1-5 millimeter, and best groove depth is that 2 millimeters, groove width are 3 millimeters.On perching knife panel 2, mill out 3 streamline grooves, object is to make abrasive dust material along perching knife panel 2 streamline groove passages, concentrates and throws quickly between feeding grinding roller and bull ring, improves crush efficiency, because perching knife panel streamline groove 5 can form a kind of air channel.Perching knife panel 2 is arranged on perching knife support 3, and has formed perching knife support and perching knife panel angle α 4, and perching knife support and perching knife panel angle α are generally 20 °-50 °, and α best angle is 35 °.Angle α can throw abrasive dust material between feeding grinding roller and bull ring on peak efficiency ground like this, thereby improves pulverizing quality and the efficiency of Raymond mill main frame.

Whether shape and the perching knife baffle plate of the utility model to perching knife cutter in Raymond mill main frame is that arc unfilled corner is not done any requirement near the top, one end of discharging opening, and they can not affect pulverizing quality of the present utility model and efficiency.

Claims (2)

1. a perching knife in Raymond mill main frame, is made up of perching knife baffle plate and perching knife panel, it is characterized in that: perching knife panel has 1-10 bar perching knife panel streamline groove, and perching knife support and perching knife panel angle α are 20 °-50 °.

2. perching knife in a kind of Raymond mill main frame according to claim 1, is characterized in that: perching knife panel streamline groove depth and width are respectively 1-5 millimeter, and perching knife panel streamline groove cross section is arc.