(Dongguan Humen Meijun Sandblasting Equipment has the final right to interpret the original narrative text, copying and use are strictly prohibited, and our company reserves the right of legal recourse)

Open Blast Machine:

The sand pipe is long and there is no requirement for the size of the workpiece. The working method of the sandblasting gun is an open sandblasting in a large space, which can spray larger size workpieces, and the dust needs to be centrally treated.

■Open sandblasting machine classification:

There are open sandblasting machines with general pressure siphon, open sandblasting machines with high pressure tank mode, and one side sandblasting machine

Environmentally friendly open sand blasting machine for abrasive recovery (including siphon and pressure feed)

■Open sandblasting machine use:

Steel structure treatment sand blasting machine, rust removal sand blasting machine, steel plate sand blasting machine, oil tank sand blasting machine and other pressure mobile sand blasting machine series products

Widely used in sandblasting and three-dimensional engraving of glass, marble and other stone materials, shipbuilding sandblasting, bridges, railways, etc.

Surface treatment of steel structures such as containers and petrochemical facilities before painting, rust removal and anti-corrosion treatment, and fancy sandblasting for denim clothing.

■Characteristics of open sandblasting machine

1, compact structure, superior performance, simple and convenient operation.

2, The design and production of the cylinder conform to the pressure vessel standard, which is safe and reliable.

3, using standard common parts, easy to replace, lower cost.

4, install instant control function, adopt electric control or pneumatic control to meet the different needs of customers, and can be operated by one person alone.

5, The shell is sandblasted and uses advanced anti-rust paint to prevent rust.

6, add wheels, easy to move.

Open sandblasting machine is divided into two types: pressure type (pressure feeding type) open sandblasting machine and negative pressure general pressure siphon type open sandblasting machine

一:Negative pressure general pressure siphon type open sand blasting machine

The appearance of the blasting tank of the siphon type open blasting machine is basically the same as that of the pressure type open blasting machine, the conical tank body,

Wheels are installed under the feet for easy movement.

Difference between siphon and pressure blasting machine:

1) A thinner 3mm steel plate is used for welding, rather than the pressure-type 5-6MM steel plate, because of the negative pressure

The tank body does not need to withstand the impact of high pressure, and the welding technology is the same as that of the high pressure tank to ensure the quality of the sand tank.

2) It is a three-way and ball valve commonly used for sand production in a box-type sand blasting machine instead of an air-controlled sand control valve at the bottom of the tank to control the sand production size,

The sandblasting gun adopts a siphon type negative pressure sandblasting gun. Since the abrasive is sucked by negative pressure, the sand pipe should not be too long or no sand will be produced.

The length of the general sand pipe is 3-4 meters. Dongguan Meijun siphon negative pressure open sandblasting machine adopts the modified B-type sandblasting gun, nozzle

Using high wear-resistant boron carbide material with a diameter of 10-12MM, ensuring large sand output from the spray gun, stable sand suction, and extended sand pipe length

Long to about 10 meters.

The siphon type open sandblasting machine produced by Dongguan Humen Meijun Sandblasting Equipment can use more than 10 meters of sandblasting pipes in the horizontal direction.

The scope of use of the siphon type open sand blasting machine: suitable for the place where the negative pressure method can only be used and the high pressure sand blasting machine cannot be used

Large workpieces to be handled, such as: long aluminum plates, large pieces of glass, installed glass curtain walls, large pieces of ceramic tiles, foam, etc.

Features: Compared with the van-type general pressure sandblasting machine

1) Add wheels, which can be fixed or moved, and sandblasted in any place;

2) Open sandblasting to solve the problem of sandblasting large objects that cannot be handled by van machines without pressure sandblasting;

3) High starting point of welding technology, spraying anti-rust paint, the overall life is increased;

4) The blasting pressure and efficiency are higher than the van type siphon blasting machine.

Two: Negative pressure general pressure siphon type open sandblasting machine with sand return function

The sandblasting structure is the same as the above ordinary negative pressure open sandblasting principle, except that the dust removal and sand suction system integrated in the upper part of the sandblasting tank, combined with the Y-shaped sand return device on the sandblasting gun, can realize sandblasting at the same time Recycle abrasive.

After the abrasive sprayed from the sandblasting nozzle hits the workpiece, the air is expelled due to the blocking of the brush, but the abrasive and dust are recovered by the strong suction generated by the vacuum cleaner through the Y-shaped sand return device to the storage In the sand tank, the abrasive falls into the bottom of the tank, and the dust is filtered by the filter element to form an automatic circulation.

三:Pressure mobile sandblasting machine

By configuration:

1) Basic type: pure manual type, basically pressure-retaining assembly.

2) Pressure-holding type: electric control type or pneumatic control type

3) Pressure relief type: electric control type or pneumatic control type

Advantages of using a pressure type open sandblaster:

It can replace the pickling and phosphating process, and it does not involve the problem of sewage. Quick sand blasting and rust removal, while changing the surface roughness,

It can also remove welding slag, burrs, and flash. High efficiency, low cost and good quality are unmatched by traditional chemical and manual rust removal. Sandblasting

The quality of the post-paint is good and the coating life is long. It is the general process method adopted in the world.

Applicable scope of pressure type open mobile sandblasting machine:

Mainly used for: surface cleaning, rust removal, paint removal, oxide coating, engraving, spray processing, descaling, burrs, welding scars,

Glass blasting to strengthen the surface of glossy parts. It is a necessary process for spraying and electroplating pretreatment (to improve the adhesion of the coating surface

All finishes)

Pressure-type open mobile sandblasting machine series products are widely used

1) Glass, marble, ceramic tile, mold, fitness and amusement equipment and other surface sandblasting cleaning and three-dimensional carving and carving operations;

2) Sand blasting for shipbuilding, bridges, railways, containers, oil pipelines, chemicals, mining facilities, water conservancy projects, port construction, etc.

Surface treatment of steel structure before painting, rust removal and anti-corrosion treatment;

1) Basic steel structure descaling sandblasting machine: pure manual type, basically a pressure-maintaining assembly.

Inlet valve (ball valve control switch) + sand adjusting valve (ball valve control switch). Without electric control and pneumatic control system, 2 people are required to operate at the same time, one person takes a gun to blast the workpiece, and the other person controls the machine switch.

2)Pressure-maintaining steel structure descaling sandblasting machine: electric control type or pneumatic control type

Intake valve (aluminum alloy globe valve) + sand control valve (EMPAIR air-controlled sand valve or manual sand valve).

The sand tank is always under pressure and needs to be relieved manually.

The characteristic is: no matter any switch on the spray gun, as long as the exhaust ball valve on the top side of the sand tank is not opened, the pressure in the cylinder will not be released (except for the self-discharge of the manual sand valve: it will cause serious sand accumulation in the sand pipe). ), suitable for short-term point blasting.

3)Derusting sand blasting machine for pressure relief steel structure: electric control type or pneumatic control type

Inlet valve (aluminum alloy globe valve) + sand control valve (EMPAIR air control sand valve or manual sand valve) + automatic air control exhaust valve.

When the sand tank is blasting, the pressure in the tank is the working pressure, and the pressure in the tank is 0 when it stops. It is suitable for long-term large-area blasting.

The pressure in the tank will never exceed the limit pressure, which plays the role of safety guarantee and is also a necessary assembly method for automatic sand return.