Introduction of stone sand making machine

Stone sand making machine, also known as sand making machine, impact crusher, is a special equipment for fine crushing and shaping of various stones and stones (marble, limestone, pebbles, granite, basalt), etc. It is the core equipment of the sand production line It is designed in combination with the actual situation of the domestic sand and gravel plant and the international innovative technology level. It has an irreplaceable important value and function.

Work site picture of stone sand making machine

Stone sand making machines are widely used in many departments such as construction, building materials, chemical industry, water conservancy, highways, railways, etc. It has simple structure, high efficiency and energy saving, flexible use, good plastic effect, and larger output. It is quite popular in sand and stone factories.

What are the equipment for stone sand making machine? There are many types in the market. Commonly used equipment includes VSI sand making machine, HVI sand making machine, etc. Both of these are new types of crushed stone sand making equipment, with large processing capacity, easy operation, and multiple functions. “Stone-strike-iron” working mode, with an output of 12-650 tons per hour, can meet the needs of sand making plants of different scales. The specific details are as follows.

Introduction of sand making machine related supporting equipment

 1) Simple swing type (simple pendulum type) jaw crusher

working principle

The simple pendulum jaw crusher has a fixed jaw and a movable jaw. The fixed jaw is fixed on the front wall of the frame, and the movable jaw is hung on the spindle. When the eccentric shaft rotates, it drives the connecting rod to reciprocate up and down, so that the two thrust plates also reciprocate. Through the action of the thrust plate, the movable jaw suspended on the suspension shaft is pushed to reciprocate. When the movable jaw swings to the fixed jaw, the material falling in the jaw cavity is mainly crushed by the squeezing action of the jaw plate. When the movable forehead swings away from the fixed jaw, the crushed material is freely discharged through the discharge port at the lower part of the jaw cavity under the action of gravity. Therefore, the work of the jaw crusher is intermittent, and the crushing and unloading processes alternate in the jaw cavity. When this kind of crusher works, all points on the movable jaw are centered on the suspension shaft, and they simply swing in an arc. Because of the relatively simple trajectory, it is called simple swing type jaw crusher, or simply swing type jaw crusher for short.

 

(2) Complex swing type (compound swing type) jaw crusher

working principle

The movable jaw is directly suspended on the eccentric shaft and is directly driven by the eccentric shaft. The bottom of the movable jaw is supported on the rear wall of the frame with a thrust plate. When the eccentric shaft rotates, the movable jaw swings to and fro the fixed jaw on the one hand, and at the same time it moves up and down to a large extent along the fixed jaw. The motion trajectory of each point on the movable jaw is different. The top motion is restricted by the eccentric shaft, and the motion trajectory is close to an arc. In the middle part of the movable jaw, the motion trajectory is an elliptic curve, and the closer the ellipse is, the longer it becomes. When this type of crusher works, the movement trajectory at each point of the movable jaw is relatively complicated, so it is called a complex swing type jaw crusher, or a compound swing type jaw crusher (jaw crusher) for short.

Advantages and disadvantages of compound pendulum jaw crusher

(1) The movement of the mobile jaw of the compound pendulum type jaw crusher at the upper and lower ends is not synchronized, crushing and discharging are performed alternately, so the power consumption is even.

(2) The vertical stroke of the movable jaw is relatively large, which is beneficial to the discharge, especially the discharged viscous and wet materials.

(3) Compared with the simple pendulum jaw crusher, the structure is relatively simple, light and compact, and the production capacity is higher.

(4) Due to the large vertical stroke of the movable jaw, the material is not only squeezed, but also partially ground and peeled, which aggravates the phenomenon of over-crushing of the material, increases energy consumption, generates large dust, and the jaw plate is easier to wear.

(5) When the compound pendulum jaw crusher crushes materials, the movable jaw is subjected to a huge accumulation of pressure, which directly acts on the eccentric shaft. At present, such crushers are made of medium and small size.

(3) Other forms of jaw crusher (jaw crusher)

1. Hybrid swing type (mixed pendulum type)jaw crusher

In order to overcome the shortcomings of the simple pendulum type jaw crusher and the compound pendulum type jaw crusher, a mixed pendulum type jaw crusher has been trial-produced. Its working principle: the movable jaw and the connecting rod are mounted on the eccentric shaft together, and the connecting rod head It is installed in the middle of the eccentric shaft, and the two shaft shells of the movable jaw are installed on both sides of the connecting rod head. The two thrust plates are still supported on the lower end of the movable jaw and the connecting rod and the rear wall of the frame. The moving trajectory of each point of the movable jaw is elliptical, and its long axis is inclined to the discharge direction, which promotes the advancement of the material and pushes the material to the discharge port, which improves the discharge conditions and increases the production capacity of the crusher. At the same time, the ratio of the horizontal swing at the bottom of the movable jaw to the vertical swing is 1:0.8, which is more reasonable than the compound pendulum jaw crusher, and can reduce the wear of the tooth plate. Since the movable jaw and the connecting rod are both suspended on the eccentric shaft, the eccentric shaft and its bearings are subjected to great stress, the working conditions are bad, and they are easily damaged. At the same time, the structure is also relatively complicated. Although the relevant domestic mining machinery manufacturers have made hybrid swing crushers, they have not been promoted due to the above reasons.

2. Fine crushing jaw crusher (fine crushing)

This machine is an improvement on the simple pendulum and compound pendulum jaw crushers. It adopts an eccentric shaft structure composed of several movable jaws and several eccentric columns. During operation, each movable jaw is used to crush materials separately, thereby reducing the size of the machine. It is easy to start, stable operation and low energy consumption. At present, there are compound pendulum type fine crushing jaw crusher and simple pendulum type fine crushing jaw crusher. The working principle is the same as the prototype crusher, but the length of the feed port is increased, and the crushing ratio can reach 5-8. This type of crusher can crush ores and rocks whose compressive strength does not exceed 250MPa/cm2. Its processing capacity (calibrated by this machine) is based on crushing medium-hard ores and rocks with a loose density of 1.6t/m3.

All products produced by our company have passed the ISO9001 international quality system certification.

Crushing equipment: jaw crusher, impact crusher, compound crusher, roller crusher, hammer crusher, cone crusher, ring hammer crusher, feed crusher, raw coal crusher, road crushing Machine, river pebble crusher, cobblestone crusher, coarse crusher, fine crusher, mobile crusher, etc.

 

Sand making machine equipment mainly includes: new sand making machine, third generation sand making machine, river pebble sand making machine, basalt sand making machine, large sand making machine, impact sand making machine, straight-through sand making machine, small sand making machine Machine, crushed stone sand making machine, manual sand making machine, sand making machine production line, sand making machine equipment.

VSI Series Vertical Shaft Impact Crusher
Model & Capacity

VSI

Model Capacity (t/h) Feeder size (mm) Rotating Speed
(r/min)
Power
(kw)
Weight
(t)
Overall Dimensions (mm)
Waterfall and center feeding Whole center feeding Soft material Hard material
VSI7611 120-190 65-95 35 30 1700-1900 55×2 11.8 3700×2150×2100
VSI8518 200-260 100-130 40 35 1520-1700 90×2 14.5 4140×2280×2425
VSI9526 300-380 150-190 45 40 1360-1500 132×2 17.8 4560×2447×2778
VSI1140 450-520 225-260 50 45 1180-1310 200×2 25.6 5000×2700×3300

VSI5X

Model Capacity (t/h) Feeder size (mm) Rotating Speed
(r/min)
Power
(kw)
Weight
(t)
Overall Dimensions (mm)
Waterfall and center feeding Whole center feeding Soft material Hard material
5X7615 150-280 70-140 35 30 1700-1900 110-150 12.1 4100×2330×2300
5X8522 240-380 120-200 40 35 1500-1700 180-220 14.8 4140×2500×2700
5X9532 350-540 180-280 45 40 1300-1510 260-320 18.6 4560×2600×2900
5X1145 500-640 250-360 50 45 1100-1310 400-440 27.5 5100×2790×3320
Structurer Diagram
Indicative Gradation Curves
Dry Sand Making Processing

Production line introduction:

The dry sand production line is equipped with a high-performance XV sand making machine and a coarse-fine powder separator. It is energy-saving, environmentally friendly, small in footprint, compact in production line and high in automation.

Applicable materials:

Hard rock: such as granite, diorite, basalt, conglomerate, sandstone, limestone, argillaceous limestone, dolomite, gneiss, quartzite, marble, slate, etc. Soft rock: such as suspected limestone, glutenite, argillaceous shale, argillaceous conglomerate, marl, mudstone, etc.

Applications: Applications in industries such as hydropower, highways, and urban construction. The granularity of finished products can be combined and graded according to the different needs of users.

Equipment configuration:

vibrating feeder, jaw crusher, cone crusher, impact crusher, vibrating screen, coarse powder separator

Sand production line process introduction:

0-40mm aggregate through hanging feeder,the belt conveyor is transported to the vertical impact crusher to break,screening of the material from the vertical shaft impact crusher on a two-layer vibrating screen,material larger than 5mm returns to impact and breaks again,form a closed loop.3-5mm material can be partially finished according to the discharge requirements,some of the materials returned to the impact and broke again.Material less than 3mm enters the coarse powder separator,separate 0-0.075 mm of stone powder.0.075-3mm and 3-5mm material composition make up finished product pile.Pulse bag type dust collector can be selected according to environmental protection requirements.

Remarks:

The production line is mainly based on the actual material size and the customer’s requirements for product granularity. According to different production site conditions, Dewo engineers can provide customers with process planning and technical support, and we can also design non-standard according to the actual installation conditions of customers and supporting components, etc., we strive to achieve a reasonable and economical production line for customers.

Dry sand making process advantages:

(1) Fineness modulus and grading area adjustment: Sand making machine and sand stone powder separator are equipped with frequency conversion speed control system, which can adjust the production mode according to the characteristics of raw materials, and achieve the quick and convenient adjustment mechanism of sand fineness modulus and stone powder.It is a high quality production process.

(2) Adjustment of stone powder content (sand equivalent): The content of stone powder is adjusted to the requirements of use by the sand and stone separator.

(3) Good environmental performance: it is equipped with a special dust removal system, the dust is small, and the noise during operation is less than 90dB.

(4) Small footprint, compact production line and high degree of automation: the plane area is small, and only 2 staff members are required for production and operation.

Dewo dry sand making process features:

(1) The process design is scientific and reasonable, and the quality and output of the mechanism sand are effectively guaranteed;

(2) It can crush medium, high hardness and extra hard materials;

(3) High automation configuration and a large reduction in the cost of human resources;

(4) The fine sand grade of the finished product is fine and the fineness modulus is adjustable;

(5) The equipment operates with low noise and less dust pollution.