EMPAIR Air Control Sand Control Valve

Meijun No.: Q001

Old spring+copper cake+plastic type

The left is the rubber core I-shaped seat  the right is the diaphragm air bag 

1) The I-shaped seat is an external rib 2-inch interface: the upper part is connected to the bottom of the sand tank, and the lower part is connected to a 45-degree sand outlet tee ,

Built-in wear-resistant rubber core   height 110  mm *diameter 45 mm*bore diameter 13MM /18MM    silicone material, wear-resistant.

I-shaped seat:

Plastic core:

2) Glue-Paper Air Pump

The original use of rubber pads and springs to control the displacement of the thimble is easy to break, and the rubber pads are easily damaged after long-term use.

The new air pump adopts 2 piston rubber rings, which makes the displacement of the thimble more smooth. The sensitivity is higher, the key is to increase the service life, the replacement is easy, and the cost is greatly saved.

3) Thickened sand tee:

Cast iron, thickened casting, 2 inch inner teeth (general water pipe teeth) on the top, 1.2 inch outer teeth (connected to the sand cylinder joint or adapter) in the front, and 1.2 inch inner teeth connected to the air supply pipe at the rear.

The sand outlet tee of many companies is integrally connected with the sand valve. Once damaged, it must be replaced in a complete set. In order to facilitate customer replacement and save costs, the tee is now independent and improved.

Increase the bottom wall thickness, increase the wear time, and at the same time change the 90-degree vertical to 45-degree oblique angle of the sand drop in the tee, the purpose is to form a same-direction airflow path with the airflow coming from behind,

Increase the effective power of the particles in the sand valve, reduce the rebound and swirl of the sand particles at the bottom of the sand valve, reduce the wear of the tee and the sand cylinder joint,

The key is to use our internal 45-degree sand blasting tee, which can effectively reduce or try to solve the phenomenon of often no sand during the blasting process, do you know?

Sand regulating valve sand regulating steps:

During the sandblasting operation, according to the sandblasting state, adjust the handle on the manual abrasive valve to adjust the flow rate of the abrasive outlet. The flow rate of the abrasive should not be too large.

When viewed under the sun or other bright light source, the air stream containing abrasives is not much different from pure air stream.

■Adopt air-controlled sand control valve sand control steps:

If the pneumatic control sand control valve is used, the valve core in the I-shaped seat is closed under the normal shutdown state.

1) The left screw needs to be adjusted to the middle part of the rubber core of the sand valve

2) Adjust the nut under the handle bar of the sand regulating valve on the right, and transfer it into the right beam in the extrusion I-shaped seat, so that the right beam in the I-shaped seat squeezes the rubber core to the left to the middle part, and squeezes the left beam on the left screw. The rubber core is closed to form a closure.

That is to say, the left screw and the right nut are tightened to the valve core at the same time, so that the valve core is in a closed state. When the manual switch is pressed, the compressed air will squeeze the rubber in the sand regulating valve after entering the sand regulating valve, so that the inner spring of the sand valve shrinks. , the thimble is retracted to the right, so that the right beam in the I-shaped seat is returned, the channel in the rubber core is opened, and the abrasive passes through the sand valve to form a sandblasting work.

Check the normal state of the second and second steps above: there is a slight airflow out of the muzzle (not a lot of rushing out) and no sand is ejected is the best effect.

3) After the above 2 steps are adjusted, the test machine works. If the spray gun still does not produce sand or the sand production is too large, you need to adjust the handle switch on the right side of the sand valve (that is, behind the nut), clockwise to reduce the sand amount, Counterclockwise is to increase the amount of sand.

When adjusting, it must be fine-tuned, adjusted one by one, adjusted, and sandblasted until it is suitable.