To ensure the efficient operation of explosion-proof distribution boxes , purchase, installation, and maintenance are three important links. Therefore, we should focus on these three links:
1. Correct selection of explosion-proof distribution boxes: The manufacturers of explosion-proof distribution boxes differ in the quality of explosion-proof distribution boxes produced. Therefore, it is recommended that users choose the explosion-proof distribution boxes produced by regular explosion-proof distribution box manufacturers. The electrical components used in the explosion-proof distribution box produced by the regular explosion-proof distribution box manufacturer are of good quality, which also determines the quality of the explosion-proof distribution box.
2. Proper installation of explosion-proof distribution boxes: Whether or not the installation of explosion-proof distribution boxes is qualified also determines whether failures occur in the use of explosion-proof distribution boxes. Before installing the explosion-proof distribution boxes, it is necessary to first clarify all the wires in the explosion-proof distribution boxes. The color of the switch should be clearly marked, all kinds of wires must be carefully and neatly discharged, and must be bundled. If it is a part that is very easy to move, you can use a spike to fix it. If the explosion-proof wiring box is installed with a clear method, the height above ground should reach 1.2 meters. If the box is an electric meter box, then the distance should reach 1.8 meters. Electric welding must not be used to open the explosion-proof distribution box.
3. Correctly maintain the explosion-proof distribution box: After the correct installation of the high-quality explosion-proof distribution box, it will not encounter too many failures. In order to avoid the failure of the explosion-proof distribution box during use, the user must pay attention to the daily maintenance of the explosion-proof distribution box when using the explosion-proof distribution box. In order to achieve better use of the explosion-proof distribution box, it is recommended that enterprises can conduct professional training on the personnel of the explosion-proof distribution box to ensure that the user can correctly use and maintain the explosion-proof distribution box. During the installation of the explosion-proof distribution box, there are certain requirements for the circuit installation path, and the following requirements must be ensured:
1. The path of the main circuit of the explosion-proof distribution box should be as short as possible. The topography and landform are not complicated and the investment is less.
2. Avoid production and storage sites of explosive and flammable materials.
3. As far as possible, the electric circuit of the explosion-proof distribution box shall be set up in a place convenient for traffic to facilitate the operation and maintenance of the construction road.
4. As far as possible, the farmland should be occupied less, and the hazards of the geological hazards such as depression, easy flushing, ground subsidence, and unstable slopes should be avoided. Avoid places that are easily touched by vehicles.
Enchuang explosion-proof distribution box body is made of multiple explosion-proof and increased safety aluminum alloys. The explosion-proof box body is used for electrical appliances and the increased safety box body can be used for explosion-proof components such as prompts and buttons. And so on, generally used for terminal blocks of equipment, many people know that in the use of explosion-proof distribution box, if the problem of heat dissipation of the equipment is not solved well, it will directly affect the operation of the equipment in the later period. Therefore, we should pay attention to:
1. Heat sink: The heat sink is the most effective method for heat treatment. Through the design of the size, size and other factors of the heat sink, the outer wall of the explosion-proof casing is welded with a slot radiator, an excessive radiator and a slot radiator through the heat pipe. Connected, has reached the cooling effect.
2. Ventilation pipeline: When the conditions permit, an air inlet and outlet hole can be opened on the box and directly connected with the ventilation pipeline so that the explosion-proof distribution box can reach the air circulation and the temperature can be brought out through the air circulation so as to make the temperature inside the box. Adjusted to the normal range, it also prevents the intrusion of hazardous gas on site, thus ensuring the normal operation and production safety of explosion-proof equipment.
More information about Enchuang explosion-proof power distribution box, you are welcome to continue to pay attention to the company's website to understand!
A4 Paper Machine
A4 Paper Machine
This is A4 Paper Making Machine,writing and printing paper making machine.
According to the different paper grade and working speed, this kind of paper machine is needed to select the way of papermaking, dewatering structure of press section, dryer cylinder bank, sizing and finishing equipments.
Sheet forming can use the open-type headbox, air-cushion headbox, and hydraulic headbox, gap former and inclined wire former. According to the paper uniformity requirement, it can use distributor roll or finishing surface roll.
Press dewatering type is multi-roll and multi-press nip press rather than large-diameter press. As the low basis weight and wet strength of this kind of paper, it usually makes the low strength wet sheet attached to the felt or guide rolls during each section mutual transferring and full web leading as much as possible.
Dryer section: dryer cylinder group. Paper leading: active or passive paper rope system. Finishing equipment: To choose according to the paper grade requirement.
Now we introduce the technical proposal and structural drawing of Fourdrinier advanced printing paper machine, which we made for Taiqian Minrui Huatong Paper Company in Henan province, China. The advanced printing paper of this company is the famous brand in China.
Trimmed width: 2640mm
Working speed: 400m/min
Basis weight: 50-100g/sq.m.
Headbox: Air-cushion headbox
Forming table length: 15m
Suction flat box with all stainless steel micro-crystal cover.
Press section: four rolls two press nips
The wet sheet is stripped by pick-up suction unit.
The second under press nip rubber blind bottom roll diameter is Φ800mm, with drive unit;
The suction top roll diameter is Φ800mm, with drive unit.
The top press nip is made by a stone roll and a rubber roll. The rubber roll diameter isΦ800mm, with drive unit;
The stone roll diameter is Φ850mm, with cut squirt.
This structure ensures the low strength wet sheet can press smoothly and paper breaks can be reduced.
The smooth press rubber bottom roll diameter is Φ800mm; the top stone roll diameter isΦ850mm. The paper leading roll has the drive unit.
The dryer section has 32 dryer cylinders with the diameter of Φ1800mm, which is divided into five groups: three groups for before-sizing, two groups for after-sizing. The top and bottom felt of first group and the group at the back of sizing machine is equipped with six felt drying cylinder with the diameter of Φ1250mm, which can dry the moisture well and improve the drying efficiency.
The paper leading roll has the drive unit. The paper leading type is three-stage passive paper rope system.
Sizing machine: inclined type surface-sizing machine.
Calender: four roll three press nips; the number is decided by the demands.
Reeler: horizontal pneumatic reeling machine.
If you are interested in our products, please feel free to contact us for more information, we are glad to give you the competitive quotation upon receipt of your detailed requirements.