1 ) The upper and lower limit alarm devices of the electric contact level gauge sometimes have very contradictory simultaneous actions, that is, the upper and lower limit alarm indicators of the secondary table of the electric contact level gauge flash simultaneously. Although the actual liquid level heights of the high and low ends are impossible to exist at the same time, they are often occurring on the secondary meter, especially when the liquid level detecting cylinder is re-opened after the discharge of the liquid level detecting cylinder. For example, when the on-site glass level gauge indicates 60% scale, the secondary table level indicator of the control room flashes at both the lower limit of 50% and the upper limit of 75% , indicating that the liquid level is higher than the upper limit. Below the lower limit, obviously this is impossible.

The reason for the analysis is as follows: after the liquid level detection cylinder has just been discharged, the actual glass level gauge indicates that it is below the upper limit ( 75% ), but the high alarm indicator flashes, indicating that the high alarm circuit has formed a path. This may be caused by short-circuiting of the electrode or disconnection of the outer terminal of the electrode, which is in contact with the outer casing of the test cylinder (common end of the power supply), so the indicator light flashes; or the outer end of the electrode may be dirty and short-circuited with the outer casing of the test cylinder; The loop cable is grounded. Sometimes the high-alarm indicator flashing phenomenon will disappear for a few tens of minutes or so, and it will return to normal, indicating that the high-alarm flash is due to the residual liquid bead on the electrode when it is discharged and the liquid bead flowing down the wall of the test canister. Instructions. If the high alarm indicator is still flashing after half an hour, and the actual liquid level is normal, then it should be found according to the above reasons. This high alarm flash is sometimes caused by a false level. Sometimes, in the normal liquid level, after the liquid level detection cylinder is discharged, the lower limit of 5% is flashing, indicating that the circuit has been disconnected, which may cause the external end of the electrode to be broken or not well connected, and the cable lead is broken. The loop is not well connected to the terminal at the point of control of the racetrack; it may also be a problem with the lower limit of the secondary table ( 50% ). Sometimes the false level will also cause a low alarm flash.

( 2 ) The electrode of the electric contact level gauge is prone to be covered by oxide, and its reliability and sensitivity gradually decrease with time. This can be solved by reducing the electrode current of the electrode, because the adsorption force of the electrode is greatly reduced. A pointed electrode can also be used because it has a certain self-cleaning capability, which prolongs the life of the electrode and increases the reliability of the work. In addition, it is also possible to adopt a method of tilt mounting in order to reduce the chance of alarming at the upper and lower limits of the electrode, since it is possible to reduce the probability that the electrode bead communicates with the liquid droplet flowing down the container wall. The electric contact level gauge should be drained frequently and flushed with steam to reduce the cover on the electrode contacts and clean the contacts so that the indicator of the secondary meter is not dimmed or misdirected.

JXW Series Univesal Jet Mill

Universal crusher is suitable for pharmaceutical, chemical, metallurgy, food, construction and other industries. It can process hard and hard materials, including plastic, copper wire, Chinese herbal medicine, rubber, etc. It can also be used as the supporting equipment before the processing of micro crusher and ultra-micro crusher. Its powder collecting chamber adopts fully enclosed noise reduction structure, which can effectively reduce the working noise. The machine is equipped with a cooling device to reduce the temperature and work more smoothly. The motor speed of the machine is 5000 RPM. The machine is made of lcr18Ni9Ti stainless steel material, with strong wear and corrosion resistance characteristics, suitable for processing advanced and corrosive materials. The machine adopts the impact crushing method, so that the material into the crushing chamber, by the high-speed rotary six movable hammer impact, through the gear ring and the material collision with each other and crushed, crushed material with the help of air flow, through the sieve into the powder bag, leaving no residue. It has the advantages of high efficiency, low noise, reliable work performance and product quality, safe operation, drug hygiene and low loss.

1. Before using the universal jet mill, check whether all fasteners of the machine are tightened and whether the belt is tightened.

2. The running direction of the spindle must conform to the direction of the arrow shown on the protective cover, otherwise the machine will be damaged and personal injury may be caused.

3. Check whether the electric appliance of the mill is complete.

4. Check whether there are metal and other hard sundry objects in the crushing room of the mill, otherwise it will break the knife tool and affect the operation of the machine.

5. The purity of the material must be checked before crushing, and no hard metal sundry is allowed to mix in, so as not to damage the dao tool or cause combustion and other accidents.

The oil cup of the crusher should be frequently injected with lubricating oil to ensure the normal operation of the machine.

7. Stop feeding before shutdown, if not continue to use, to remove the machine left behind.

8. Regularly check whether the screen is damaged. If there is damage, it should be replaced immediately.

9. When using, if the crusher will have small vibration, be sure to tighten the handle connecting the cover to avoid accidents.

JXM Series Univeral Jet Mill,Universal Pulverizer,Universal Grinder,High Effective Jet Mill

Shandong Jing Xin Powder Equipment Technology Co., Ltd. , https://www.jxpowder.com