JJ-1BAElectric stirrer digital display speed measurement constant speed strong mixing

1、 JJ-1BA digital display constant speed electric mixer

  JJ-1BAThe design is reasonable and the structure is novel. It adopts DC motor, stepless speed regulation, and adopts advanced power increasing and speed stabilizing circuit. It has stable speed, big torque, low noise, intuitive speed display, simple and safe operation. It is an essential basic equipment for colleges and universities, scientific research units and chemical engineering units.

2、 Instructions for use
  Note that the speed control knob is preset at the maximum speed (scale 10) at the factory to protect the drive system from damage during transportation. Therefore, the setting of the knob should be checked before use to ensure that it is suitable for the liquid being stirred: if the speed cannot be determined, turn the knob to the lowest (scale 1). After the mixer has not been used for a period of time, when it is reused, friction noise will be heard when the mixer is first switched on. This is due to the prestress on the friction wheel lining, which has no damage to the function of the mixer. After a short period of operation, the noise will disappear. The drill chuck and mixing shaft are allowed to be plugged into the clamping mixing rod with a maximum diameter of 100 mm.

  The machine realizes stepless speed regulation through friction wheel drive system, but the motor always runs at a fixed working point, and the power output speed and torque of the motor reach the optimal value at this point and basically keep constant. The power is transmitted to the stirring shaft through a friction wheel and a central shaft equipped with a pair of plastic couplings. The two gear trains are configured on the same two shafts to form a two speed manual adjustment. If the loss in power transmission is ignored, the power at the end of the mixing shaft is always equal to the output of the motor, and a pair of spiral couplings on the central shaft keep the wear of the friction wheel at a low level. The coupling device automatically adjusts the pressure required on the friction wheel according to the load on the mixing shaft. Low load causes low pressure and high load causes high down pressure.

  In the experiment, attention should be paid to the position and capacity of the mixing head, especially the glass container. The mixer must be turned off before shifting, otherwise the reduction gear may be damaged. The machine is equipped with two speeds, I for low speed, II for high speed. The preset position is gear II. When shifting from gear II to gear I, turn the plastic bearing sleeve anticlockwise (looking from top to bottom) to the stop position. Pull down 5.5mm and turn clockwise until the sound of steel ball reset in bearing sleeve is heard. When shifting from gear I to gear II, rotate the bearing sleeve anticlockwise to the stop position, push up 5.5mm, and then rotate clockwise until the sound of steel ball reset is heard.

3、 Cleaning and maintenance

  The machine will only fail after long-term natural wear and aging of parts. When cleaning, only use water and surfactant. Do not allow oily or greasy substances to come into contact with the surfaces of friction wheels and tapered wheels. Because this will greatly reduce the friction coefficient between the two, thus weakening the power transmission capacity.

4、 Technical parameters

Motor output power: 200W
Rated power supply: 220-250v
Working state: continuous working for a long time
Maximum torque of mixing shaft: 1850gcm
Speed regulation range: 60-500rpm for stage I
Class II 240-2000 rpm
Maximum mixing capacity (water): 20 liters
Ambient temperature: 5 ∽ 40 ℃
Clamping range of drill chuck: 0.5 ∽ 10mm
Suitable medium viscosity: 0 ∽ 10000mpas

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