CN2875583Y

CN2875583Y - Wear resistant rice screen sheet

Info

Publication number: CN2875583Y
Application number: CN 200520084070
Authority: CN
Inventors: 陈硕
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-09
Filing date: 2005-06-09
Publication date: 2007-03-07
Anticipated expiration: 2015-06-09

Abstract

The utility model discloses an anti-abrasion rice sieve which is made of a normal steel plate with the thickness of 1.5-2.5. The shape and size change along the different type and size of the rice mill. The slightness trough on the rice sieve having certain axial angles with the rice mill is uniformly arranged by certain lines and rows. A salient arranged with certain regulations is arranged on full or local of the rice sieve. The boride layer with the thickness of 0.05-0.1mm of the iron boride (FeB) and the iron boride (Fe2B) is on the surface of the rice sieve, and its rigidity is 1500-2000HV which is more than 3 times of the rigidity of the normal sieve, consequently, the anti-abrasion performance is largely improved, and the service time of the anti-abrasion rice sieve is more than 4 times of that of the normal rice sieve. As the boride process is adopted, the rise of the total cost of the anti-abrasion rice sieve is not more than 30% compared with the normal rice sieve.

Description

Wearable piece of rice sieve

Affiliated technical field

The utility model relates to the rice milling machinery product parts, especially the rice huller screen sheet.

Background technology

The principle of rice mill is: main shaft drives spiral propeller and the rotation of rice roller, motionless or the utmost point slow rotation of rice huller screen, paddy or brown rice advance under the stirring of the promotion of spiral propeller and rice roller, be subjected to the effect of the pressure regulating mechanism at rice output outlet place, paddy or brown rice are ground in the passage that rice huller screen and rice roller are formed make rice, so rice huller screen is the main consumable accessory of rice mill.Rice huller screen generally is made up of a slice or several, though heat treatment hardening techniques such as carburizing, nitriding have been adopted on its surface, increases service life,, a secondary rice huller screen is still shorter service time, and it is higher to change frequency.

Summary of the invention

The purpose of this utility model is the defective that overcomes prior art, and a kind of case hardness height is provided, and is wear-resistant, the rice mill wearable piece of rice sieve of long service life.

The purpose of this utility model realizes as follows: the rice huller screen sheet is made with thick 1.5-2.5 millimeter general steel plate, there is the elongated slot that axially forms an angle with rice mill evenly distributed on it by certain row, column distance, whole or local the going up of rice huller screen sheet also has the projection of arranging according to certain rules, there are the FeB (FeB) of 0.050.1 millimeter and the boride layer of boronation 2 iron (Fe2B) in the surface of rice huller screen sheet, and its hardness is 1500-2000HV.

The advantage that this wearable piece of rice sieve has is: can reach more than the 2000HV because FeB (FeB) and boronation 2 iron (Fe2B) are formed the hardness of boride layer, be more than 3 times of common sieve sheet, so its anti-wear performance improves greatly.Though boronising is than the expense height of carburizing or nitriding, the ratio that accounts for rice huller screen sheet totle drilling cost because of heat treated expense is less, and therefore, the totle drilling cost of wearable piece of rice sieve generally raises than common rice huller screen sheet and is no more than 30%, and be more than 4 times of common rice huller screen sheet service life.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing is the part drawing of the utility model wearable piece of rice sieve.Fig. 1 is the front view of wearable piece of rice sieve, and Fig. 2 is the partial enlarged drawing at I place among Fig. 1, and Fig. 3 is the cutaway view at A-A place among Fig. 2.

The specific embodiment

With reference to accompanying drawing, wearable piece of rice sieve is made with thick 1.5-2.5 millimeter general steel plate, and model, the specification of its shape size and rice mill is different and change.Cylindrical shape, 6 dihedrals, 8 dihedrals, 12 dihedrals etc. are arranged.One secondary rice huller screen can be combined by monolithic, also can be combined by 2 of flanging moulding, and accompanying drawing is a monolithic rice huller screen sheet part drawing.The elongated slot that axially forms an angle with rice mill is arranged on the rice huller screen sheet, evenly distributed by certain row, column distance.Whole or local the going up of rice huller screen sheet also has the projection of arranging according to certain rules.There are the FeB (FeB) of 0.05-0.1 millimeter and the boride layer of boronation 2 iron (Fe2B) in the surface of rice huller screen sheet, and its hardness is 1500-2000HV.Can adopt boriding process to realize, as pack boriding: the rice huller screen sheet removing surface that processes is clean, fill the boronising case that full boriding medium is inserted sealing by interval 10-15 millimeter, put into cabinet-type electric furnace and be warmed up to 850-900 ℃, be incubated and stop power supply after 6 hours, be chilled to 600 ℃ with stove and come out of the stove, be cooled to the unpacking cleaning of room temperature.Treated rice huller screen sheet boride layer can reach 0.05-0.1 millimeter, case hardness 1500-2000HV.

Claims

A kind of wearable piece of rice sieve, make with thick 1.5-2.5 millimeter general steel plate, it is characterized in that: have the elongated slot that axially forms an angle with rice mill evenly distributed on the rice huller screen sheet by certain row, column distance, whole or local the going up of rice huller screen sheet also has the projection of arranging according to certain rules, there are the FeB (FeB) of 0.05-0.1 millimeter and the boride layer of boronation 2 iron (Fe2B) in the surface of rice huller screen sheet, and its hardness is 1500-2000HV.