Horizontal Sand Mill for Grinding Powder Chemical and The Ink

• Type: Die Grinder
• Power Source: Electricity
• Object: Drilling Bit
• Application: Chemical
• Disc(Wheel) Type: Grinding Disc
• Material: Steel
• Model NO.: JRX
• Working Style: High-speed universal
• Disc Diameter: 180mm
• Variable Speed: With Variable Speed
• Transport Package: Wooden Case
• Specification: customerized
• Trademark: JRX
• Origin: China

Product Description

1.Product feature
WM series horizontal closed sand mill, compared with ball mill, roller mill, colloid mill and other dispersing equipment, sand mill has the advantages of high production efficiency, uniform particle size distribution, strong continuity of production, low cost and so on. And this series of sand mill can be customized explosion-proof type.
Widely used in coating, dye, ink, medicine, magnetic recording materials, ferrite, photographic film, strontium carbonate and other industrial sectors of efficient grinding and dispersion.
According to the effective volume of the cylinder 1.5-250l, it can be divided into 10 specifications including 1.5l, 5L, 15L, 20L, 30L, 50L, 60L, 100L, 150L and 250L.Motor power: 2.2 ~ 75KW.
WM series grinders are designed to type A (front-end discharge) and type B (back-end discharge)




Environmental conditions of working
  Sanding machine normal working ambient temperature range: 10 ° C ~ 45 ° C
 Air relative humidity range for normal use of sand mill: ≤95% (at temperature +25 °C)
2.The overall structure
WM series sand grinder consists of mechanical seal device, disperse shaft subassembly, grinding cylinder body, pressure controller (optional) and temperature meter, main motor, transmission system, feed pump, body and electrical system.
The working principle
Pump transfers the mixed materials of solid/liquid after pre wetting process to the cylinder body, and the materials are stirred by high-speed rotating dispersion plate together with grinding media in cylinder body, making strong shear of the material of solid particles between the grinding media, to achieve the purpose of grinding fine particles and dispersing agglomeration paticles. After grinding, material discharge through dynamic separator or static separator
Main features and how they work
Cooling and lubrication: pump the lubricating oil into the mechanical seal device through the electric pump or gear pump, the flow rate ≥60L/h. If it is a water-cooled mechanical seal, it can be directly cooled with clean water, the flow rate ≥60L/h, and the working pressure of the coolant in the cooling and lubrication window is less than 0.02 MPa.
Lubricating oil can be used: transformer oil, N5 precision machine tool oil or high speed engine oil.
Precautions:
The drop of oil level can be observed through the oil level indicator. Within one oil change period(6-12 months), the cumulative loss ≤2mL belongs to the normal range. If it is greater than 2mL, the sealing ring should be repaired and ground (pay attention to exclude the leakage amount of framework oil seal).
Can judge whether the mechanical seal is in good condition from the discoloration of the oil.
Lubricating fluid should be added in time after the liquid drops to avoid dry friction. If there is no circulation of the lubricating fluid, it should be stopped immediately for maintenance. Lubricating fluid should be replaced after each maintenance.
Dispersing shaft assembly
Specially designed dispersing discs are mounted on the dispersing shaft. They are fastened to the dispersing shaft by bushings, glands, spring washers and hexagon socket screws. When dispersing discs are assembled on the dispersing shaft, they should be rotated as shown in Figure 3. And paired assembly to ensure continuous
In addition, in order to make full use of the dispersing discs that have worn out (inconsistent wear levels) and improve the service life, the assembly position can be exchanged during cleaning and disassembly, but the matching position still needs to be ensured.

 

Dispersion disc structure
The size of each part, the circumferential linear velocity, and the surface quality have a direct influence on the polishing dispersion efficiency. 
Grinding cylinder
The inner sleeve of WM series sand mill is made of special steel, which has expanded the scope of use of this product due to its good wear resistance and corrosion resistance.
The inner sleeve of WM series sand mill adopts two-stage spiral cooling device, and the cooling effect is better than that of DC, which is about 5 °C lower. The cylinder of the sander is a changeable design. If the cylinder is worn out, it can be used as long as the inner sleeve is replaced.
Explosion-proof pressure controller and thermometer
The WM series sand mill is equipped with an explosion-proof pressure controller at the inlet, and the pressure control range can be adjusted. The user can adjust the pressure to the appropriate position (~0.1MPa) as needed. A temperature gauge was installed at the discharge port to observe the discharge temperature.
The pressure transmission of the explosion-proof pressure controller adopts hydraulic type: one side of the bellows and the pressure controller (with display meter) are filled with oil, and when the diaphragm moves, the oil is pressed to deform the pressure gauge spring tube to indicate the pressure. According to the transmission principle, It can be seen that the pressure at both ends of the diaphragm is equal, so the pressure on the pressure gauge is also the pressure inside the cylinder.



Main motor power matching
Sand mill is a general-purpose grinding and dispersing equipment with a wide range of applications. Due to the different material properties of different products, the process conditions vary greatly, and the power required for the same volume of sand mill is different. The machine is equipped with YB2 series explosion-proof motor according to Table 3.2, explosion-proof class Exd II BT4. Y series ordinary motors can also be equipped according to user requirements.