| Customization: | Available |
|---|---|
| Type: | Clay Wet Sand |
| Casting Method: | Thermal Gravity Casting |
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(I). A summary of technical solutions
1. the equipment adopted in this system is suitable for clay sand process and is suitable for producing cast iron castings.
Conditions for the use of the system
Power: 3AC 380V 50HZ
Water source: 0.2Mpa to 0.3Mpa
Compressed air: 0.4Mpa ~ 0.6Mpa
Ambient temperature: 0 to 40 degrees centigrade
Relative humidity: less than 90%
The highest sand temperature of the sand dropping machine: less than 250 degrees C
Production program: 40t/h (clay sand cast iron production line)
2. the design principles and comprehensive technical and economic indicators of the scheme.
The design of the programme is based on the following principles:
L meets the requirements of the user's production program and process quality, and has the advanced level in China. The system configuration takes full account of the current situation and market characteristics of the enterprise. It not only takes into account the development stage of the enterprise, but also has better market adaptability and technological research and development ability.
L combined with the production characteristics of the enterprise, in the layout of the equipment, the factors such as production organization, equipment maintenance and waste disposal are generally considered, which are beneficial to production management, equipment maintenance, and facilitate the smooth flow of logistics, and bring convenience for future production and maintenance.
In the selection and configuration of l equipment, it is safe, reliable, low cost and environmental protection. Under the conditions of adapting to the foundry production environment and production characteristics and meeting the requirements of the process quality, the equipment installed capacity is reduced as much as possible, the reliability of the equipment is raised, the number of vulnerable parts is reduced, the cost of the equipment is reduced and the consumption of raw materials is reduced, in order to improve the economic benefit. Good foundation.
In the system configuration, l is trying to meet the requirements of "flexible production organization", so that in the process of production, the system equipment can be reasonably selected according to the different process requirements and the different links of production. It does not affect the normal operation of the system, reduces the production cost, and facilitates the production and production organization.
L meets the requirements of social progress and environmental protection. On the premise of guaranteeing the quality of the process, production organization and economic benefits, the scheme makes every effort to put the requirements of environmental protection and the improvement of the production environment in an important position and lay the foundation for improving the casting image from the configuration and layout of the system.
L effectively utilizes space, rationally configuring equipment, reducing basic cost, and reasonably reducing construction cost.
(two) sand reclamation process and main configuration description (see programme plan)
1. the addition of new sand
The new sand is lifted from bucket elevator to storage new sand bucket.
2. sanding machine and old sand recovery system
The casting mold after cooling is sent to the sand processing system by the inertia vibrating sand dropping machine through the belt machine. The dust removal is carried out by the pulse duster with a fixed semi closed cover.
3. old sand crushing and regeneration system
The old sand after the sand falling of the inertia vibrating sand machine is transported to the fine six angle screen sand machine by the belt conveyor, and the sand is broken and sieved. The belt feeder (the belt feeder is equipped with the temperature measuring and humidifying device above the belt feeder, the atomization of the sand through the infrared probe to achieve the humidification and temperature reduction), the vibrating boiling cooling bed is added evenly. After cooling and cooling, the bucket elevator is lifted to the old sand bank to complete the broken and sieves of the old sand. The sand particles after the crushing and screening are temporarily stored by the transition hopper, and the bucket elevator is raised to the next step.
4. dedusting system
For the clay sand technology, good dedusting is not only the requirement of environmental protection, but also the production technology and quality level.
Requirements and directly affect the production cost, so the design and layout of its dust removal system should be paid more attention.
5. electric control system
5.1 the electrical control system controls all the equipment from the beginning of sand falling to the molding line plus the sand bucket. It can not only be automatically operated by the system interlocking, but also can be divided into units independently. The control set is manual and automatic switching. The shell seal of the electric cabinet is adapted to the working environment of the foundry workshop. The main device adopts the domestic famous manufacturer and the key device adopts high quality import. The programmable controller adopts the MITSUBISHI series PLC host and the input and output interface. The control program passes the rigorous and careful demonstration, is in line with the process and is reasonable and reliable. All power cables, control cables are all strengthened, and the use is safe and reliable. The touch screen is set on the electric cabinet, and the working form of the equipment is displayed and the fault self diagnosis function is displayed. The use and maintenance of the system is very convenient, the electronic control system has extensive adaptability and long-term high reliability. System control has a starting alarm device, in the main equipment and underground tunnel, high altitude near the control of the press and torsion station, convenient equipment debugging and maintenance, at the same time is conducive to safety emergency stop.
Control of the mixed sand system: the touch screen is set up electronically, the quantity of material and the operation button are displayed, the new and old sand is controlled by the specific time by the electron, the coal clay is quantified through time, the adding order of the mixing machine and the old and new sand and coal clay is in turn by PLC control, and the belt machine and the bucket elevator tail wheel have the inspection. The test function (such as skidding, overload, belt breaking, etc.), the design of the electronic control system, the installation completely conforms to the national GB/T5226.1 standard, the main line sets the corresponding dividing line box, the control line adds the spare line, facilitates the improvement and the maintenance.
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