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Selection of control system for pressure blasting machine


There are currently three commonly used air control systems for sand blasting machines:
1) Pneumatic control system:
It consists of air inlet valve (air shut-off valve, air valve tee), exhaust valve (manual and automatic), sand control valve (manual and air control), control air pipe and air control switch (manipulator).
When working, press down the handle of the air control switch to control the air flow through the other air pipe to the air inlet valve and the air outlet valve, so that the air inlet valve opens, the sand control valve opens (air control type), the air outlet valve closes, and the inside of the abrasive bucket The pressure increased and the blasting operation began.
This model is currently widely used in the container industry, shipyards and steel structure processing.
Its characteristics are that each time the three valves are opened and closed, the gas of the blasting cylinder will increase and discharge, and each time there is a certain time for opening and closing. If a manually controlled sand control valve is used, the worker must wait for the spray. The sand blasting gun can be put down before all the gas in the sand tank is exhausted, because
No air control switch is used to control the sand control valve. Regardless of whether the air control switch is on or off, the manual sand control valve is always open. The pneumatic remote control response has a lag time of about 4 seconds, so each switch has an instant. Pulse, the abrasive will be stored in the sand pipe to a certain extent, causing pipe plugging, so this system is not suitable for sandblasting operations longer than 20m. (If a manual sand valve must be used, it is best to choose a 45-degree inclined falling sand butterfly (The sand regulating valve can effectively reduce the sand blocking problem caused by the vertical falling sand and increasing resistance)
For sandblasting operations longer than 20m, it is recommended to add a power distribution control system to greatly reduce the reaction time and reduce instantaneous pulses.
2) Electric control system:
It is also called a wired control system.Unlike air control, the control line connected to the gun head and the sand blasting machine is not an air pipe but a wire. The electric control box switch suspended on the sand blasting machine is opened or closed through the wire to control the solenoid valve (using a solenoid valve (Replaces the air shutoff valve), and then controls the main air source switch, you can also connect a small solenoid valve with the air shutoff valve to replace the manual air operated switch of the air control type, other accessories are basically the same as the air control type, such as our company The 400-type engraving sandblasting machine is assembled in this way.
The advantage of the electric control system is that for large sandblasting projects such as large oil tanks, cabins, etc. that operate at more than 20 meters or even 60 meters, it can reduce the blockage caused by instantaneous pulses, control delays or excessively long sand pipes. Sand phenomenon.
Large-scale sand blasting projects generally use manual butterfly sand control valves that produce sand at 45 degrees.The advantage is that it is not easy to block sand.
3) Wireless remote control system:
The wireless remote control is to replace the wire with a wireless control device.Other configurations are the same as the electronic control type.
We give you the most complete range of sandblasting products , allowing you to enjoy the ease and joy of one-stop service , save your precious time , and get a relaxed and happy working state !
Pneumatic control system of pressure type mobile sand blasting machine: including automatic exhaust valve, air control switch, rubber core I-shaped seat, air control sand control valve, thick sand tee, air shutoff valve and other accessories;
Our sales related accessories are:
1) American M brand air control sand control valve:
Rubber core I-shaped seat-play a role in controlling the amount of sand produced, smooth sand production, sensitive control, need to replace the wear parts for the rubber core, this rubber core is made of wear-resistant rubber, durable.
Air control sand control valve-used with rubber core I-shaped seat, the main replacement parts are film and valve spring, easy to disassemble, made of wear-resistant rubber, durable and cheap;
Automatic exhaust valve-automatic control type, sensitive exhaust, easy to use, high safety performance, need to replace the consumable part is a film, this film is made of wear-resistant rubber, durable.
Air shut-off valve-also known as three-way air control valve, it is used to switch on and off the main origin of the sand blasting machine. It also distributes air to the bottom sand control valve and the top automatic exhaust valve. The main replacement part is the film. Made of wear-resistant rubber for sensitive control;
2) Manual butterfly sand control valve: At present, large sand blasting projects use 50-80 meters long sand blasting pipes or sand blasting with smaller particles of sand, or the rubber core of the sand control valve is hardened due to long-term non-use. Sand pipe plugging often occurs, and the manual control butterfly-shaped sand regulating valve is used to effectively reduce the sand pipe plugging problem caused by the resistance caused by the vertical sand drop of the ordinary sand valve due to the 45-degree inclined sand production. Butterfly sand control valve is a sand control valve commonly used in large-scale engineering sand blasting machines abroad. Thomson sand control valve has the same effect. Welcome to consult!
3) Other air control accessories (accessories of the old imported sand blasting machine): American CLEMCO type copper inlet valve, copper exhaust valve, exhaust water filter,
New aluminum alloy air globe valve:
Reasonable structure, strong aerodynamics, and less lossy materials.
Compared with the old three-way air shut-off valve, it has the characteristics of sensitive loading and unloading, light weight, easy installation, and no rust.The key is to use an rubber ring instead of a rubber gasket, which reduces the chance of wear and increases life.
The new aluminum alloy air shut-off valve is the first choice for pressure blasting machine, mobile blasting machine, and open type blasting machine to control the main air source switch.
It can be used in combination with air-operated switches (air-operated), foot switches, and solenoid valves (electrically-operated) to fully meet customers' individual assembly needs.
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