Resin sand mixer is mainly composed of low-speed conveying cage, high-speed sand mixing cage, base, sand hopper, liquid material conveying system, gas pipeline system, electric control and operating system and sand dosing system, the key component is a high-speed sand mixing cage shell that can be opened to the left and right direction for easy cleaning. The surface of the sand mixing stirrer is welded with wear-resistant material, and the layout of the sand mixing stirrer has an angle, which should be stopped to adjust the angle when changes are found in the process of use. As the resin sand mixer to hardener as hardener, and hardener is a weak acid, corrosive, in the process of adding attention to do protective measures. Resin sand mixing machine for conveying hardener metering pump also requires strong corrosion resistance, it is recommended to use the original Italian OBL imported mechanical diaphragm pump.
Resin sand mixer can be divided into: S25 double-arm resin sand mixer and S24 single-arm resin sand mixer, resin sand double-arm sand mixer consists of two free rotary cages, one for conveying cage, conveying the original sand; two high-speed sand mixing cage, high-speed sand mixing. Liquid resin and curing agent are sprayed into the cage at the second stage, and the curing agent is sprayed into the cage first, and then the resin is sprayed into the cage after a time lag.
1.Features.
1.1 Double-arm continuous resin sand mixer is a single-sand single-mixing machine, which is composed of conveying cage and two-stage sand mixing cage. The conveying cage adopts low speed conveying, and the sand mixing cage adopts high speed mixing.
1.2 The sand mixing cage adopts the full open type, and the hard alloy welded on the sand mixing blade, its service life is more than 2000 hours.
1.3 Liquid material conveying adopts Italian imported mechanical diaphragm metering pump to convey hardener (hardener pump) and gear pump (with stepless variable speed motor) to convey resin, or all imported gear pumps can be used for conveying according to user requirements.
1.4 The tail sand of mixed sand head is very small, and the electrical control system adopts imported PLC control.
1.5 Liquid material conveying valve, can choose corrosion-resistant liquid material reversing valve (backflow valve), this valve can do shutdown without stopping the pump, the valve is in the working position when the sand mixer is working, when it is not working, it will play to the backflow position, and then play to the working position when it is working again, which solves the problem of too much head and tail sand when the pump is opened frequently. The liquid material is assisted by compressed air to spray into fan-shaped atomized belt, which makes it easier for the binder to mix with the sand quickly and evenly, and the back-blowing liquid material valve with back-blowing function can also be used.
2. The reason of uneven mixing of resin and silica sand
2.1 Resin sand mixer blade is a kind of perishable parts. Perennial need to replace an accessory. Blade use normal replacement frequency about in 3-4 months between more reasonable. Resin sand mixer blade quality good or bad directly affects the quality of mixed resin sand, to wear serious blade height adjustment or re-replacement of new blade.
2.2 solidifying agent pump, resin pump, liquid material valve whether there is wear and tear need to be replaced, solidifying agent pump or resin pump pipe joint whether there is air leakage, the pressure of the gas supply source to meet the requirements (0.4-0.6MPa), the normal production and use process to check when the machine is turned on, pay attention to maintenance.
3. Reasons for low sand output of resin sand mixer
3.1 Check whether there is sand in the sand bank (there is a lack of sand alarm device on the main electric control cabinet panel). As the continuous resin sand blender is a relatively high degree of automation sand blending equipment, the internal electrical control and liquid supply system need to be accurately calibrated during the trial run. The drive bearing should be greased at least once every 3 months.
3.2 The sand mixer cage is not cleaned for a long time, which causes the residual sand to be caked, resulting in a small sand mixing space when mixing sand, resulting in a small sand output.
3.3 The sand mixer blade wears seriously, the height of the blade that wears seriously is adjusted or replaced by a new blade.
3.4 Too many impurities of resin or curing agent cause blockage of pump and pipeline.
3.5 Due to the curing process sand temperature, resin quality, the amount of curing agent added, the surrounding environment temperature are related, check whether the above conditions have changed.
Qingdao Sanzhuji Equipment Manufacturing Co., Ltd. specializes in the production of Green Sand Molding Line,Self-hardening sand molding line,foundry machines,Sand molding machine,Sand casting equipment,sand mixer,GS high efficiency rotary mixer,Resin sand mixer,no-bake resin sand mixer,Jolt squeeze molding machine/Jolt-squeezing moulding machines,Multi- Piston Moulding Machine/Hydraulic multi-piston moulding machine,sand casting molding machine,sand reclamation equipment，foundry molding machine,flaskless moulding machine,shot blasting machine,dust collector,according to the amount of old sand recovered Carry out plan customization, and provide sand reclamation equipment installation, commissioning, and training. Welcome guests to visit the factory.
