Clean bench is what?

Clean (Bench) is designed to meet the needs of the cleanliness of the local work areas in order to meet the needs of modern industry, optoelectronics industry, biological pharmacy and scientific research and experiment. Its working principle is: through the air blower the air inhaled through the static pressure box into the pre filter, HEPA filter, the filtered air to send a vertical or horizontal airflow, the operating area reached 100 clean, ensure the production of environmental cleanliness requirements.
Clean bench is divided into vertical flow clean bench according to the airflow direction (Vertical Flow Clean Bench) and the horizontal flow clean bench (Horizontal Flow Clean Bench), according to the operation structure is divided into unilateral and bilateral operation in two forms.
First, the working principle
The cleaning bench (hereinafter referred to as equipment) is a vertical laminar flow type local air purification equipment. Indoor air pre filter filtration, pressure in the static pressure box by small centrifugal fan, the air filter two filters, HEPA filter from the air outlet side blowing gas flow has a clean and uniform velocity, can eliminate the air the original work area, the dust particles and biological particles away. To form a sterile high clean working environment.
Two, structural features
The equipment is made of high quality steel plate bending, assembled and welded. The air supply body is provided with a novel non-woven fabric pre filter, an air efficient filter made of superfine glass fiber filter material, a small low-noise low speed centrifugal fan, etc., and is provided with a moving universal castor. The utility model has the advantages of simple structure, beautiful appearance and the like.
The equipment adopts VAV fan system, the input voltage regulator of the centrifugal fan, so as to change the condition, use the wind average wind speed remains in the ideal range, the main component of the equipment can effectively prolong the service life of the filter efficiency, reduce the running cost of the equipment, the equipment is also provided with an ultraviolet sterilizing device.
Five, installation:
1., the equipment should be installed in all levels of purification plant or sealed air-conditioning plant.
2. the equipment shall be installed away from the dust and source of high speed.
3. after installation, you must clean the equipment inside and its surroundings with super clean vacuum cleaner or no fiber producing tool.
4. after installation and cleaning, the QDF-2 type hot bulb anemometer can be used to measure the average wind speed in the cleaning area. When the average wind speed is less than 0.32m/s, high adjusting transformer voltage, increase the fan input voltage; on the contrary, when the average wind speed over 0.48m/s, lower voltage regulator, reduce fan input voltage until the average wind speed at 0.4m/s + 20% in the ideal range, can be used.
Six, use
1.. Before use, you should open the ultraviolet germicidal lamp 30 minutes ahead of time, deal with the microorganism in the working surface of the working table in the cleaning work area, turn off the germicidal lamp in 20 minutes, and start the blower.
2.. Do not store unnecessary items on the table so as to keep the clean air flow in the work area undisturbed.
3., regular (usually in February), using the QDF-2 heat bulb type anemometer to measure the average wind speed in the work area. If it is found that it does not meet the requirements, the fan power supply voltage can be adjusted, so that the work station is in the best working condition.
4.. This equipment can be operated by one person (single side table), and can also be operated by two persons (single sided double table).
Seven, maintenance
1.. According to the cleanliness of the environment, the filter material in the coarse filter will be removed and cleaned regularly. The interval is usually 3~6 months.
2. when the voltage of the air blower is raised to the maximum, the average wind speed in the work area can not reach the technical parameter index, and then the HEPA filter must be replaced.
3.. When changing the filter, first open the prefilter on the top of the air blower, then take the engine board. When changing, you should pay attention to the arrow mark of the filter, and the arrow point is the laminar flow direction.
4. after the filter is replaced, the dust detector is used to check whether the four surrounding seals are good, the fan unit voltage is adjusted, and the average wind speed in the work area is kept within the range of 0.4m/s + 20%. The cleaning efficiency is checked by a dust meter.
5., electrical components installed in the right side of the box, if there is electrical failure, you can refer to the electrical schematic diagram, electrical wiring diagram to be repaired.
L the 220V AC power must be cut off before installation and use, otherwise it will lead to danger!
L the installation and maintenance personnel must be strictly trained electrical technicians!
L the power line must be connected in series with the corresponding fuse. The housing is connected to the ground to ensure that the work is safe and reliable!
HT533A air flow controller instructions
L? Overview:
This product is one of the HT533 series air flow controllers. It is a special modulator for regulating the air quantity for the design and development of the cleaning table. There are eight lines of electrical appliances that regulate voltage memory. Touch keyboard operation and other functions.
L? Model classification?:
Type HT533A air volume controller for wind controller for vertical operation panel, type HT533B horizontal wind controller operation panel. The two types of controllers are only different in shape and have the same function.
L main technical parameters:
1? Working voltage: AC220V (10% - 15%, 50Hz +%1Hz)?;
2. output negative planting: MAX 220V/2A;
3. operating temperature: 0~50 DEG c;
4., work humidity: 40~90% (40 degrees Celsius) without condensation;
5. storage temperature: -20 DEG C ~ +70 DEG c;
6., opening size: 60mm * 110mm;
L? Working principle?:
1.. This product consists of two independent control components, that is, the main control panel HT533ACPU and the HT533OUT board which is composed of relay output. The operation key is attached to the controller's foil.
The 9V power supply of the 2. controller is provided by a primary winding of a single-phase self winding transformer for providing fan operation.
The 3. control panel is composed of indicating, touching keys and the running state surface of the fan.