Sand falling of castings:
The cast castings and the sand box plate are stacked in the form of a ring-shaped hanger that is sent to the roasting line vibratory crusher with a forklift truck. After a period of hot cooling, a hoist with an electromagnet on the ring gauge is put into a storage box and the forklift is forked and then hoisted to a vibratory crusher with a ring rail. Sand box on the upper mouth, sand box plate with the chain hoist with iron chain, sand box at the end of the center in the original foundation welding round steel, easy to connect with the chain, sling sand box plate by manual light hand, change can be turned, so greatly reduce the degree of labor and dust diffusion.
Old sand roasting:
The sand broken old sand is promoted by the hoist and enters the magnetic separator to remove the impurity and enters the old sand warehouse for a certain amount of reserve. The pneumatic gate is set under the reserve opening, the pneumatic gate is connected to the hoist, and the broken old sand is entered into the buffer reserve above the calciner after the hoist is hoisted, and there is a snail below the reserve bank. The rotary feeder is used for sand delivery in the quantitative and accurate King calciner, when the old sand into the calciner is roasted at a high temperature at 650 degrees in the furnace, and is more than 200 degrees to the sand out of the sand. After the sand outlet comes out, it enters the boiling cold bed for cooling treatment, and the roasted sand after the cooling is promoted to vibration by the hoist. Screen, screen to the suitable number, remove impurities, and then the hoist hoist to the last roast sand reserve storage, the storage warehouse under the spiral feeder, and the connection with the plastic film department, thus greatly saving manual links to achieve automatic connection.
2.2 plastic film covering film
Film mulching process:
A detailed description of the automatic technology and equipment for film covering sand is made in detail. The production line of the film coated sand is first made by three sand silos for the original sand No. 1 bucket 2 bucket and 3 iron sand bucket at the bottom of the three mouths designed for three pneumatic switches. It is a little far away from the electron, so the spiral feeder is used to put the iron sand into the electron, and the raw sand and the iron sand are quickly added to the roller reheating furnace after the electronic proportioning is added to the roller reheating furnace. The sand of the roller reheating furnace is joined by 2min30s, and the suitable heating temperature goes to the mixed sand. In the machine, the process of sand unloading requires 20S, the roller is in the reverse state, when the roller is unloaded, the roller is stopped from the reversal state to the turn, then second is heated and the sand under the sand mixer begins to add resin. The resin electronics calls the reserve fighting valve open, and then closed, the tree is closed. The tree is closed and the tree is closed after closing. The two resin reserve hopper above the fat (without a ratio with a resin bucket is also possible) to be added to the resin required by the electronically called internal phase by the spiral feeder. After the resin is weighed, the spiral feeder stops, the resin electronic call door is opened, and the signal is put into the weighing reserve bucket to wait for the next signal, after mixing 50-70S. At this time, the signal is transferred to the metering pump (time measurement) to add a certain amount, and then mixed with calcium powder after mixing 40-60S. After receiving the signal, the calcium powder is turned on the reserve fighting pneumatic door above the mixer, then closed, and the spiral feed is added to the calcium powder reserve bucket (time measurement) to wait for the next addition. Enter. 5S rear bottom air blower is unloaded after 10-30s, and after unloading (15s), the pneumatic door of the mixer is closed. In this analogy, we can write a relative procedure according to the technology required by your company.
Cooling part
After the sand mixer is unloaded, the coated sand is broken through the vibrating crushing screen and then into the first cooling after the hoist, then the vibration boiling and cooling, then the second channel cooling, the lengthening of the water cooling roller, and the hoist to the storage silo after the hoist is hoisted.
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