Equipment use and maintenance in greenhouses

First, the use and maintenance of electrical equipment

1. Electric control box (cabinet). It is a box that integrates various types of electrical switches, indicator lights, control transformers, contactors, and electrical connecting wires. Proper use of various types of switches, instruments, and meters can play a role in controlling various types of equipment with less effort. These switches, instruments, instruments, etc. are all afraid of being wet and afraid of dust, and should work and use in a dry and clean environment. Therefore, the cabinet should be in a room that is both ventilated, dry, and safe to operate. Before using, pay attention to check whether the cabinet is safely grounded. Input and output power supply wire insulation layer is damaged or broken or short circuited. Whether the input voltage is within the safe use range (check the voltage and current meter when closing). When these are confirmed to be correct, they can be used formally.

2, electric film roll, pull screen motor. Electric film winder and screen motor work in high temperature and high humidity environment, and the wire is easily damaged and aged. Therefore, it is necessary to carefully check whether the wires of the motor are in good condition before raising each season or raising seedlings. When possible, the motor can be rotated at no load or the motor shaft can be moved by hand to confirm that the rotating part of the motor is not rusted or bitten; check if the toothed oil is in the normal calibration; check the drive shaft and load part (shade) Whether the net or plastic film has a hindrance or a change in the rotational position, and only when these are correct, the motor can be started and used.

3. Electric contact thermometer. When using the appliance, be aware that it is extremely fragile (glassware) and should be handled with both hands. The upper knob has fixing bolts and permanent magnets. Whenever you use it, you should tighten the fixing bolts to prevent the adjustment knob from being lost. The voltage I designed to give the electrical contact thermometer is a safe voltage (36 volts). Therefore, it can be operated at the time of use, and the scale of the required temperature in the room can be adjusted at any time. When the indoor temperature reaches the temperature required for adjustment, the alarm system will work immediately.

Second, the use and maintenance of plastic film, aluminum mooring shade net

1. Plastic film. During the installation process, engineers and technicians intentionally adjust the tension of the plastic film to the appropriate range. This is because, as the seasons and temperature change, the swelling coefficient of the plastic film will constantly change. It will naturally age over time. Therefore, if the plastic film is too tight, it will affect its service life; if it is too loose, it will affect the service life of the plastic film (because it will cause local stress due to water and wind), it will also affect the normality of the greenhouse. Lighting affects the temperature inside the shed and the growth of the crop. Plastic films are very fragile and cannot be hooked with hard objects or branches. If there is damage, it should be repaired in time, otherwise the damage will be increased, which will affect the temperature inside the shed and the growth of the crop. The damaged area can be repaired with transparent adhesive tape. If you have the condition, you can directly use the special adhesive tape or use. Electric iron repair. The method is: using a plastic film of the same texture, cut and overlap with the size of the damage, the bottom end is made of smooth, flat wood, the surface is covered with glass fiber cloth, and the electric iron is heated to 100-150 ° C. , reciprocating ironing.

2. Aluminum mooring shade net: It is a better shading material in the market. Compared with the black plastic sunshade film, it has a long service life, good shading, and can also play a role of reflection and cooling. It is woven from aluminum mooring and tie lines. Therefore, when using, pay attention to the protection of the connection line. Do not hook or pull with metal objects. When there is a drop, the scissors can be cut off with a pair of scissors. Do not pull the thread artificially. If the damage is too large, it can be manually woven, that is, it can be stitched with a thread.

Third, the maintenance of the frame and manual film winder

1, steel frame. The main structure of the plastic greenhouse is composed of arches, sandalwood bars, columns, etc. The materials are welded pipes and square pipes. During processing, some are hot-dip galvanized or electro-galvanized, etc., which mainly play a role of anti-rust, which can facilitate the transfer, unloading and prolonging the service life of the greenhouse. However, in the greenhouse, the temperature and humidity are extremely high, and the metal material scaffolding, the coupling bolts, etc. are easily rusted. Therefore, when using and maintaining, pay attention to the anti-rust treatment. Use a higher concentration of oil (waste oil) or butter to coat the screw on the screw. If the steel frame has a large area of corrosion, remove the rust in time. Anti-rust paint.

2, manual film roll. It is a compact and practical roll film tool. The utility model has the advantages of low cost and convenient use, and can roll up or lay down a large area of the plastic film at one time. However, because it is a plastic product and is placed outdoors, it must not be knocked with metal objects when it is used, and it cannot be dropped suddenly from a height. Pay attention to acid and alkali resistance, and do not need to use oil to maintain or lubricate. This will be counterproductive (because the oil is alkaline).