Laboratory multifunctional disc vacuum filter manufacturer DL-5C

Laboratory multifunctional disc vacuum filter manufacturer DL-5CPurpose:

This machine is an intermittent laboratory vacuum filter equipment, mainly used for scientific research and experimental units in geology, metallurgy, coal, building materials and other systems. It is used for filtering viscous mud slurry in flotation, magnetic separation and other operations during ore selection experiments. It is also used for solid-liquid separation during sample testing at various operation points in mineral processing plants or other departments.

Structure Introduction:

1. Structure:

The XTLZ filter is equipped with two filter discs of different capacities, and different amounts of slurry can be directly poured into the corresponding capacity discs for dewatering treatment. The vacuum system mainly consists of a rotary vane vacuum pump, a water separation filter, a vacuum *, a magnetic valve, and a vacuum pipeline.

The electronic control system consists of control panel and circuit breaker components, and its structural principle is shown in the following figure:

(1) Φ 200mm filter disc (2) Φ 260mm filter disc (3, 5, 9, 11) solenoid valve (4) vacuum gauge (6) liquid level control component (7) vacuum * (8) automatic drainage level valve (10) water separator (12) vacuum pump (13) motor

2. Filtering principle:

Within about 10 seconds after starting the vacuum pump, the vacuum * can be pumped into a negative pressure chamber of not less than 91.2KPa (68.4 mmHg), and then solenoid valve 3 or 5 can be connected to quickly pass the liquid in the filter disc through the filter paper under the pressure difference, achieving the purpose of dehydration.

3. Structural features:

The structure of this machine is simple, compact, and the vacuum system works reliably, with a high vacuum degree. In order to prevent the liquid in the vacuum from entering the vacuum pump, upper and lower contacts are set inside the device. When the liquid reaches the predetermined height, the vacuum pump automatically stops, and the air release solenoid valve is opened. After the liquid is discharged, it starts automatically.

Laboratory multifunctional disc vacuum filter manufacturer DL-5CTechnical parameter table of vacuum filter:Installation, use, and maintenance

1. Installation:

(1) The body should be equipped with a liquid discharge hose (not exceeding 0.5 meters in length) and an open ditch.

(2) The flat surface of the equipment filter disc should be adjusted to horizontal to prevent uneven moisture content in the filter cake.

(3) After the installation of the equipment, it is necessary to check whether there is any detachment at the wiring and welding points of the sturdy parts and various electrical components during transportation. After inspection, connect the power supply. The three red terminals are three-phase 380V, and the black terminal is the neutral wire. During the trial operation, pay attention to the motor direction being consistent with the vacuum arrow direction. After normal operation, it can be used.

2. Usage:

(1) After connecting the external power supply, turn on the main power switch in the lower left corner of the machine, and the power indicator light on the control panel will turn on.

(2) Open the upper ring of the filter disc, lay the filter cloth or filter paper on the porous sieve plate, then put down the upper ring and use a pressure hook to press it tightly against the disc seat.

(3) Start the vacuum pump, and within about ten seconds, the vacuum gauge pointer reaches 91.1KPa (68.4 mmHg)

(4) Pour the slurry into the corresponding filter disc, start the solenoid valve of the working filter disc (the corresponding indicator light is on), and the filter machine will start working. During the filtration process, do not start non working filter discs to avoid inflation and damage to normal filtration.

(5) When the liquid level of the vacuum filter reaches the upper contact point, the vacuum pump automatically stops, and the air release solenoid valve opens to discharge the filtrate. When the liquid level drops to the lower contact point, it automatically starts again, and the filter machine continues to work, repeating this process until the end of the filtration.

(6) When the slurry in the filter disc becomes a cake shape after filtration (based on the disappearance of the water film on the surface of the filter disc), stop the pump and then stop the operation of the filter disc solenoid valve. At this time, open the unused filter disc solenoid valve once to timely discharge the liquid in the vacuum *.

(7) Open the upper ring of the filter disc, remove the filter cake, and wipe the upper ring clean for future use.

(8) During and after the work process, it is necessary to check whether there is any water stored in the water separation filter. If there is any water stored, it should be drained in a timely manner (move the lower ball valve, and do not turn on the pump when draining).

(9) To prevent foreign objects from entering the solenoid valve, cover the two filter discs with caps after the operation is completed.

(10) After the experiment is completed, turn off the main power supply.

3. Maintenance:

(1) Before use, check the operating parts and vacuum system of the equipment to ensure they are in normal condition before use.

(2) According to the user manual of the vacuum pump, regularly change and inspect the oil, and perform maintenance.

(3) If any abnormal phenomenon is found during the use of the equipment, it should be stopped in time to identify the cause and eliminate the fault. If it is a vacuum pump fault, please follow the 2X-4 rotary vane mechanical vacuum pump maintenance.

(4) During the use of the equipment, the slurry should not enter the vacuum *, and the sealing of the automatic drainage valve body should be ensured.

(5) When starting the vacuum pump, if the specified vacuum degree cannot be reached, special attention should be paid to checking whether the pipeline is leaking air. ① Drainage flat valve body; ② Electromagnetic valve on the upper part of the vacuum pump; ③ Are the water and air filters in normal condition.

① If there is air leakage or suction failure at the drainage valve, there is no indication on the gauge, or the vacuum degree is low, you can block the drainage port with an object. If there is severe air leakage at this point, you can remove the drainage valve seat to check for foreign objects at the shaft and sealing gasket of the valve body. After removing the foreign objects, the valve should be able to move up and down freely.

② If the exhaust port of the solenoid valve on the upper part of the vacuum pump leaks air, check whether the rectifier diode (2CP25) inside the valve is burned out. If it is burned out, it needs to be replaced. At the same time, adjust the adjusting screw behind the valve to adjust the time gap of the exhaust valve.

③ If the water filter leaks, rotate and tighten the drain ball valve at the bottom of the filter bottle.

(6) When the filtrate exceeds 4 liters and the automatic drainage still does not work, check whether the liquid level control component is normal to prevent water from entering the vacuum pump.

(7) The adjustment of the size filter disc clamping device can be achieved by loosening the clamping screw on the upper eccentric sleeve of the clamping hook and rotating the eccentric sleeve to achieve a good clamping effect.

(8) Due to the variation of atmospheric pressure with altitude, it is still normal for the vacuum degree to decrease in areas with higher terrain.

Below an altitude of 1000 meters, for every 12 meters increase, the atmospheric pressure drops by approximately 133Pa.