CN102451880A

CN102451880A - Shakeout screen modeling sand pulverizer

Info

Publication number: CN102451880A
Application number: CN2010105165267A
Authority: CN
Inventors: 邵玉国; 李建强; 张忠山; 郞伟丰; 康景春; 陈荣辉
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2010-10-24
Filing date: 2010-10-24
Publication date: 2012-05-16

Abstract

The invention relates to a shakeout screen modeling sand pulverizer, comprising a driving motor, a motor belt pulley, a V-belt, a passive belt pulley, an impeller shaft, impellers, beating rods, a bearing pedestal, a frame and a hopper. The pulverizer has the following characteristics: each impeller is inlayed with four beating rods; cutting edges of the impellers are mutually staggeringly and uniformly arranged on the impeller shaft; the bearing pedestal is arranged on an upper part of the frame; the hopper is arranged on a lower part of the frame; the driving motor is arranged on an external side of the frame; and edges of the impellers keep a distance with the shakeout screen. The pulverizer has strong fragmentation capability, good fragmentation effect and self overload protection function, and is easily maintained and with an extreme low failure rate, etc.

Description

Knockout sieve molding sand pulverizer

Technical field

The present invention relates to a kind of knockout sieve molding sand pulverizer, handle knockout sieve molding sand pulverizer respectively, belong to the technical field of casting knockout sieve especially for molding sand, foundry goods.

Background technology

In casting industry, the knockout sieve has closed and knockout mode open type, especially for the transfer matic high-pressure molding line; The knockout sieve has only 2.5 meters long open type knockout to sieve, and wanting to make molding sand to obtain effective fragmentation has great difficulty, especially for producing small-sized foundry goods and occurring in the useless type process; Molding sand does not obtain under the situation of tight burning, and molding sand is very high through pressure head high pressure compression hardness, because there is certain angle of inclination in the knockout sieve; Molding sand holdup time in sieve nest is shorter, and the molding sand of bulk compacting does not have shatterly under the vibrations of vibration motor, and then flows into go back to the sand belt system; Sometimes cause belt and following sand mouth to block, cause a large amount of race sand faults, very high, the bigger sand lump of intensity especially can't be broken in rotary screen; Profile develops into spherical sand lump, and these can't flow into the antiquated sand system again by broken sand lump, and this just causes the amount of recycling constantly to reduce; Constantly replenish new molding sand simultaneously; It is big the fluctuation of molding sand each item technic index to occur, and the mo(u)lding line high vicious circle of type rate of giving up causes very big economic loss.

Summary of the invention

The object of the invention is to provide a kind of knockout sieve molding sand pulverizer, and it passes through go back to the sand system realizes utilizing through grinding the sand processing again, reduces and runs sand loss, has saved substantial contribution; When also having reduced parking platform significantly simultaneously, alleviate direct labor's labour intensity.

Technical scheme of the present invention is achieved in that knockout sieve molding sand pulverizer, is made up of drive motors, motor pulley, V-belt, negative pulley wheel, impeller shaft, impeller, striking rod, bearing block, framework, hopper; It is characterized in that: inlay four striking rods on each impeller; The impeller cutting edge staggers each other and is evenly arranged on the impeller shaft, and bearing block is installed in framework upper, and hopper is installed in the framework bottom; Drive motors is installed in the framework outside, and impeller edge and knockout sieve keep distance.

Good effect of the present invention is to have characteristics such as breaking capacity is strong, crushing effect good, have self overload protection function, and maintaining method is simple, fault rate is extremely low.

Description of drawings

Fig. 1 is knockout sieve molding sand mill structure sketch map of the present invention.

Fig. 2 is knockout sieve molding sand pulverizer operating structure sketch map of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is done further description: knockout sieve molding sand pulverizer, form by drive motors 7, motor pulley 6, V-belt 5, negative pulley wheel 4, impeller shaft 3, impeller 2, bearing block 9, framework 8, hopper 10; It is characterized in that: inlay four striking rods 1 on each impeller 2; The impeller cutting edge staggers each other and is evenly arranged on the impeller shaft 3, and bearing block 9 is installed in framework 8 tops, and hopper 10 is installed in framework 8 bottoms; Drive motors 7 is installed in framework 8 outsides, and impeller 2 edges and knockout sieve keep distance.

As shown in Figure 2, when molding sand quality just often, in the absence of small-sized foundry goods or useless type, molding sand normally falls into hopper 10, the sand belt that returns below this moment is opened; Otherwise when bulk molding sand 11; Knockout sieve molding sand pulverizer starts; Promptly before sand lump touches impeller; Drive motor pulleys 6 through drive motors 7 and drive impeller shaft 3 and impeller 2, striking rod 1 rotation at a high speed on negative pulley wheels 4, the bearing block 9, fall hopper 10 again after the bulk molding sand 11 that does not disintegrate is pulverized, i.e. the sand lump of according with process requirements size through V-belt 5.

Claims

1. knockout sieve molding sand pulverizer is made up of drive motors, motor pulley, V-belt, negative pulley wheel, impeller shaft, impeller, striking rod, bearing block, framework, hopper; It is characterized in that: inlay four striking rods on each impeller; The impeller cutting edge staggers each other and is evenly arranged on the impeller shaft, and bearing block is installed in framework upper, and hopper is installed in the framework bottom; Drive motors is installed in the framework outside, and impeller edge and knockout sieve keep distance.