Venlo Glass Greenhouse for Lettuce and Tomato 
Glass greenhouse refers to a greenhouse that uses glass as lighting material, which belongs to a kind of greenhouse. In cultivation facilities, glass greenhouse, as a form with the longest service life, is suitable for use in various regions and various climatic conditions. The industry is divided into different construction models according to the size of the span and bay, and is divided into different types of use: vegetable glass greenhouses, flower glass greenhouses, nursery glass greenhouses, ecological glass greenhouses, scientific research glass greenhouses, three-dimensional glass greenhouses, special-shaped glass greenhouses Glass greenhouses, leisure glass greenhouses, smart glass greenhouses, etc. The area and use method can be freely adjusted by the greenhouse owner. The smallest is a courtyard leisure type. The largest height can reach more than 10 meters, the span can reach 16 meters, and the maximum bay can reach 10 meters. The degree of intelligence can reach one-key control.

Greenhouse Frame:
The main column adopts 120*120*3mm hot-dip galvanized rectangular tube

Side and end columns are made of 120*60*3.0mm hot-dip galvanized rectangular tubes

Side and end wind-resistant columns are made of 120*60*3.0mm hot-dip galvanized rectangular tubes

The truss adopts 60*60*2.0mm hot-dip galvanized rectangular tube

The herringbone beam adopts 50*30*1.5mm square tube

Surrounding beam: 50*50*2 rectangular tube

The outer sunshade column adopts 50*50*2.0mm hot-dip galvanized rectangular tube

The outer sunshade crossbar adopts 50*50*2.0mm hot-dip galvanized rectangular tube

The outer sunshade longitudinal rod adopts 50*50*2mm hot-dip galvanized rectangular tube

The dew collecting tank adopts B=1.0mm cold-formed hot-dip galvanized steel plate

The thickness of the galvanized layer of the main frame of the greenhouse is 0.06-0.08mm, and the hot-dip galvanizing specification adopts GB/T3091-93

The sink adopts B=2.0mm thick cold-formed hot-dip galvanized steel sheet, and the slope of the sink is 2.5‰ for drainage

Outside&Inside Shading System:
The system is to install shading nets outside the greenhouse (the top of the greenhouse). Its main function is to shading and cooling in summer, so that sunlight diffuses into the greenhouse, ensuring that indoor crops are not burned by strong light, and at the same time, it can reduce the temperature of indoor greenhouse by 4_6 °C. By choosing shading nets with different shading rates and adjusting the opening and closing positions of the screen nets, the needs of different crops for sunlight can be met. In addition to considering the service life, strength, thermal insulation, and energy-saving effects of external net selection, try to choose a shading net with a high shading rate to make the cooling effect better. The outer net is generally black flat net or this folded net.
The electric control box controls the opening and closing of the sunshade net. Automatic start and stop can be realized through the travel limit switch, and it can also be manually started and stopped. It can also be equipped with temperature control, time control, and light control equipment, and is connected to the weather station system to realize automatic computer control.
Shade nets are divided into flat nets and folded nets according to their shapes, and are divided into gauze nets, aluminum foil nets, and aluminized nets according to their materials. External shading generally chooses black gauze.

Internal sunshade system
The system is to install shade nets inside the greenhouse. In summer, the excess solar radiation is blocked indoors, and the sunlight is diffused into the greenhouse, evenly irradiating the crops, protecting the crops from being burned by the strong light, and reducing the indoor temperature at the same time. If used in conjunction with the cooling pad fan cooling system, the cooling efficiency can be greatly improved, the air volume for indoor cooling and ventilation is less, and the airflow is more smooth. In winter and at night, the system can effectively organize infrared overflow, reduce heat loss, reduce heating space, and reduce heat energy consumption, thereby reducing the operating cost of the greenhouse.

Hydroponic Growing System:
Soilless culture refers to a cultivation method in which a substrate is used instead of natural soil or a substrate is used only when raising seedlings, and a nutrient solution is used for irrigation after planting. Because soilless culture can artificially create a good rhizosphere environment to replace the soil environment, it can effectively prevent the physiological obstacles caused by soil continuous cropping diseases and soil salt accumulation, and fully meet the needs of crops for environmental conditions such as mineral nutrition, water, and gas. The basic materials can be recycled, so it has the characteristics of water saving, fertilizer saving, labor saving, high yield and high quality.

Water fertilizer machine:
The integrated automatic control system of water and fertilizer can help producers to realize automatic integrated management of water and fertilizer easily. The integrated water and fertilizer system usually includes water source engineering, head hub, fertilizer applicator, filtration system, field water transmission and distribution pipe network system, valve controller, solenoid valve and control software platform and other parts, as well as supporting field climate monitoring station and soil moisture monitoring station. . Through the organic combination with the water supply system, intelligent control is realized. It can realize intelligent monitoring and control of water supply time, fertilization concentration and water supply in irrigation. The transmitter (soil moisture transmitter, flow transmitter, etc.) will monitor the irrigation status in real time. When the soil moisture in the irrigation area reaches the preset lower limit, the solenoid valve can be opened automatically. After the liquid level reaches the preset irrigation quota, the solenoid valve system can be automatically closed. The rotation of the solenoid valves in the entire irrigation area can be scheduled according to the time period, and the irrigation and moisture collection can be manually controlled. The whole system can coordinate work to implement rotation irrigation, fully improve irrigation water efficiency, save water and electricity, reduce labor intensity, and reduce labor input costs. In practical consumption, due to different water supply conditions and irrigation requirements, the integrated automatic fertilization system of water and fertilizer may only be composed of local equipment.

Drip Irrigation System: 
The drip irrigation system generally consists of a head hub, pipelines and drippers.
1. The first hub: including water pump (and power machine), fertilization tank, filter, control and measuring instrument, etc. Its function is to pump water, fertilize, filter, and send a certain amount of water into the main pipe with a certain pressure.
2. Pipelines: including main pipes, branch pipes, capillary pipes and necessary adjustment equipment (such as pressure gauges, gate valves, flow regulators, etc.). Its role is to deliver pressurized water evenly to the dripper.
3. Dripper: Its function is to make the water flow through the tiny pores, form energy loss, reduce its pressure, and make it drip into the soil in a dripping manner. Drippers are usually placed on the soil surface and can also be buried shallowly for protection.

Intelligent Control System:
DHT11 temperature and humidity sensor collects data, STC89C52 microcontroller performs data processing, and LCD1602 display module displays temperature and humidity. The temperature adjustment module is controlled by PWM. When the temperature is less than 18ºC, the M4QA045 motor stops running. When the greenhouse is greater than 28ºC, the M4QA045 motor runs at full speed. When the temperature is between 18ºC and 28ºC, the M4QA045 is controlled by PWM. Motor speed. The humidity alarm module is controlled by the STC89C52 microcontroller outputting high and low levels. When the humidity is greater than 65%RH or less than 45%RH, the STC89C52 microcontroller outputs a high level and the humidity alarm module alarms. When the humidity is between 45%RH and 65%RH , STC89C52 microcontroller output low level, the humidity alarm module is closed. The single-chip microcomputer communicates with the upper PC through the RS23 communication protocol. The system can not only complete the collection, processing and display of greenhouse environmental information independently by the single chip system, but also can complete the monitoring work by the PC.

Q:Are you trading company or manufacturer?
A:We are factory and we also have our trading company.
Q:How long is your delivery time?
A:Generally it is 20-30 days after order.
Q:How to install the greenhouse ?Do you provide the installation service?
A:We will provide paper or video building manual,or if needed we will send engineer to do installation guidance.
Q:What is the export Volume of your company?
A: We have a 240000 tons export per year in the past,with the expansion of the markets,the export volume is growing steady