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When purchasing a rotary stop level switch, many purchasers often ask what the criteria for purchasing a rotary paddle level switch is, or what the key to measuring a rotary stop level switch is. In fact, among the many components of a rotary stop level switch, the motor is the key to measuring the goodness of a rotary stop level switch.
First, from the working principle of the rotary material level switch
As a kind of level switch used for solid material detection, the rotary material level switch makes use of micro-motor as the driving device, which is connected with the blade drive shaft through the clutch. When the blade does not touch the material, the motor keeps running; on the contrary, when the blade touches the material, the motor stops rotating and cuts off the power supply of the motor, and at the same time outputs a switching signal to control the material delivery. If the material falls, the resistance of the blade also disappears, the blade relies on the torsion spring equipment to return to the normal rotation of the detection state.
From the above working principle of the rotary level switch, it is easy to see that the motor is decisive for the stability and reliability of the rotary level switch. Not only that, a large number of practical cases also fully proved that the motor is the key to measure the good or bad rotary switch.
Second, from the rotary material level switch failure causes
In the safety control rigorous industrial application site, the reason why the rotary material level switch failure is frequent, and its use of unqualified poor-quality motor has a great relationship. Failures caused by the use of substandard motors are common:
1. The torque of the motor is insufficient, which can easily lead to false alarms;
2. The motor coil is easy to burn off, resulting in the scrapping of the instrument;
3. The motor is light in weight and cannot eliminate the self-fluttering phenomenon in the operation of the instrument, which affects the working stability of the instrument;
4. The motor deceleration device wear fast, easy to gear bite, or because of parts rupture, resulting in the motor can not work.
It can be seen that the motor is good or bad on the stability of the rotary material level switch has a direct impact. This reminds purchasers in the purchase of rotary paddle type level switch, we must pay attention to whether the motor is qualified, high quality. Generally speaking, when selecting the motor, it is necessary to consider the structure of the motor, power, speed, deceleration mechanism, temperature rise and other factors. However, many domestic instrumentation manufacturers to cope with the competition, a price war, most of the selection of domestic low-quality motors to control production costs. The internal deceleration device of the inferior cheap motor is mostly plastic gears, thin parts, coil is too thin and substandard materials, so that the rotary material level switch of the whole product performance and reliability are greatly reduced. This makes the instrument user in the purchase of cheap instruments, seems to take advantage of a great deal cheaper, but the poor quality of the product, its performance and reliability greatly affected, in turn, will cause great losses to the production. Therefore, the pursuit of low prices is not worth the loss.
KDSS86 series rotary paddle type level switches are designed with high-quality motors and microswitches, and the rotary shafts are equipped with bearings, while focusing on the details of the process, strict control of the production process and quality inspection, which has higher reliability than similar products in China, and its stable performance in practice has been favoured by the users.
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