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VSI Sand Making Machine

Brief Introduction

VSI sand making machine (also named VSI vertical shaft impact crusher) is a new generation of sand making machine with international advanced level newly and successfully developed in our company. Long-term technical deposition, excellent manufacturer of modernized processing equipment guarantee the leading position of VSI sand making machine in the industry.

VSI sand making machine is the latest achievement designed by German authoritative experts through combining the working conditions in China. It is high-performance exclusively-produced sand-making device having advanced world level. The sand maker is especially used for providing high-quality sandstone aggregate for expressway, high-speed railway, high-rise buildings, city planning, construction of dam for hydropower plant and concrete mixing plant. It is the first choice in man-made sanding and stone shaping field. It is applicable to fine crushing technology at anterior section of grinding in mining field, material crushing in industries such as building material, metallurgy, chemical industry, mine ,refractory materials, cement and grinding, high abrasive and secondary disintegration and crushing, desulfidation of thermal power and metallurgy industry, steel scrap and builders rubbish crushing and other environmental protection project and production of glass, quartz sand and other high-purity material.

Features of structure for VSI sand making machine:

VSI Sand Making Machine VSI Sand Making Machine

Its unique rotor structure design, perfect combination of technology for wear resistant materials, crushing speed optimizing and hydraulic design are the model of perfect combination of professional secondary crushing technology and machinery manufacturing and full presentation of new technology and new process. It solves the difficulty of multi-use machine. Conversion between annular patented cascade feeding system and lining can realize flexible conversion between “Using stone to hit stone” and “Using stone to hit iron block”; use of advanced hydraulic hood opening device makes wearing parts in crushing cavity conveniently and rapidly replaced; self-developed thin oil lubrication system of double oil pump can guarantee favorable operation of main bearing system; high-technology automatic monitoring device can be automatically powered off or give out warning when bad condition occurs on machines. Because of unique design concept, VSI series of efficient vertical shaft impact crusher greatly improves production efficiency and final production quality, obviously lowers consumption of production cost and wearing parts. Furthermore, its price is far cheaper than that of imported equipment meeting the demands of domestic market. To produce ideal machine-made sand product and concrete aggregate in man-made sanding industry, to obtain crushed stone with high quality and good grain shape in the field of stone shaping, VSI series of efficient vertical shaft impact crusher is the most effectual choice. The machine is especially used for providing sandstone with high quality for expressway, high-speed railway, high-rise buildings, city planning, construction of dam for hydropower plant and concrete mixing plant.

Performance features

1. Large processing capacity and high output -50-500t/h. The output is increased by 30% compared with traditional equipment under same power and it is stable.

2. Low consumption of wearing parts — with optimal hitting-angle design for material of crushing cavity and little friction with wear resistant parts, the operation expense is lower than that of traditional equipment by 30%, which directly decreases using cost of equipment.

3. Excellent grain shape of product — product is in cubic shape with good grain shape, reasonable gradation and adjustable fineness modulus; it is especially applicable to man-made sanding and stone shaping. Practice shows that: its sanding and shaping effect are higher than that of other traditional equipments improved by 30%.

4. Hydraulic device and easy maintenance — hydraulic hood opening device makes internal parts of crushing cavity be conveniently and rapidly maintained, dismantled and changed, which shortens dead time and saves both time and labor.

5. Automatic detection, safety and reliability — having set over vibration display and warning device, which will give out warning to make equipment stop working if bad operation occurs on equipments, thereby reaching the purpose of protecting machines.

6. Thin oil lubrication and automatic maintenance — German original thin oil lubrication station, double oil pump is supplementary to each other to guarantee oil supply; automatically power off if there is oil flow and oil pressure; oil fluid cooling and heating device can guarantee that bearing lubricating is always under the best status, thereby thoroughly solving problems such as bearing heating, keeping spindle bearing at constant temperature, prolonging maintenance intervals and service life.

7. Simple and convenient installation and easy operation — light weight of equipment, various installation modes and mobile type installation; simple installation, maintenance and convenient operation and use; as soon as concrete usage is confirmed, you will only need to make fine adjustment on VSI sand maker, which will give play to outstanding performance to the utmost extent.

8. Multi-use machine and flexible application — It has unique feeding and crushing structure and many kinds of shapes of crushing cavity, which can very conveniently realize conversion between “Using stone to hit stone” and “Using stone to hit iron block”, thereby solving the difficulty of multi-use machine. If application of VSI crusher is to be changed, it can be applicable to different demand of users without making big adjustment: man-made sand making, broken stone shaping and abrasive material etc.

9. International quality assurance — The application of German latest technology process, advanced riveting technology, appearance blasting and de-rusting treatment of auto technology and application of painting technology, have greatly improved internal quality and appearance quality of equipment. International famous brand is adopted for kernel components (TIMKEN roller bearing with high precision grade is adopted for bearing) to guarantee low failure rate of the system.

10. Attaching importance to environmental protection — sand-making equipment produces small noise at work without pollution. Unique air self-circulation system greatly decreases the volume of exhausted air and dust, benefit to environment. Furthermore, VSI sand maker reserves and adapts to installing dust-removing equipment with many specifications.

Working principle

Full central feeding: material drops into feed hopper of sand maker, enters swing wheel rotating at high speed through central feeding hole; it is rapidly accelerated in swing wheel and its accelerating speed can reach several dozen times of acceleration of gravity; it is then ejected from the swing wheel at high speed; firstly it is pounded with another rebounded material which drops freely, then all of them are pounded onto material lining (Using stone to hit stone) or reaction block (Using stone to hit iron block) and are rebounded and obliquely impacted onto top part of vortex cavity; its movement direction is changed to move downward; it is then pounded with material ejected form flow passage of the impeller to form continuous material curtain. Thus, one block of material is pounded, fractioned, grinded and crushed in vortex crushing cavity for two times to many times. Crushed material is discharged from the discharge opening at the lower part.

Central feeding accompanied with annular cascade feeding: material drops into feed hopper of sand maker, drops through annular hole. It is then divided into two strands of material by material distributing plate: one of them enters swing wheel rotating at high speed through material-distributing panel; the other drops from the surrounding of material-distributing panel. Material entering swing wheel is rapidly accelerated in the swing wheel; its accelerating speed can reach several dozen times of acceleration of gravity; it is then ejected at high speed from the swing wheel. It is firstly pounded and crushed together with another material freely dropping from the surrounding of material distributor, then all of them are impacted onto vortex lining in vortex cavity and are rebounded by material lining and is obliquely impacted onto top part of vortex cavity; its movement direction is changed to make it move downward and be hit with material ejected from flow passage of the impeller to form continuous material curtain. Then, one block of material is pounded, fractioned, grinded and crushed in vortex crushing cavity for two to many times. Crushed material is discharged from discharge opening at the lower part.

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