CN203744659U - Ceramic bond grinding wheel wet green drying room - Google Patents

Abstract

The utility model discloses a ceramic bond grinding wheel wet green drying room. Two side wall bodies adopt double-layer hollow structures; an inner wall body adopts a honeycomb wall; a plurality of round holes with the same size are formed in the wall surfaces; a hot air duct is arranged at the underground parts of the side wall bodies, and a steam pipeline is arranged at the tops of the side wall bodies; electromagnetic valves capable of adjusting the steam flow are arranged on the hot air pipeline and the steam pipeline; meanwhile, circulating fans are additionally mounted in the drying room, and temperature sensors and humidity sensors inserted into the side wall bodies are connected to a temperature control instrument and a humidity control instrument respectively. According to the utility model, in the initial stage of drying, circulating hot air which is completely saturated by water vapor is used to heat a wet green body, and in the drying process, through adjusting the electromagnetic valves on the hot air duct and the steam pipeline, the temperature and humidity in the drying room are controlled, and the grinding wheel wet green body is always in a hot air environment which is balanced with the own temperature and humidity, so that drying stress is avoided.

Description

The wet base drying shed of a kind of vitrified bonded grinding wheel

Technical field

The utility model relates to the wet base drying shed of a kind of vitrified bonded grinding wheel, is specially adapted to specification larger, and thickness is thicker, and hardness is harder, and granularity is dry compared with the wet base of fine ceramic binding agent sand wheel.

Background technology

The process that in the wet base of vitrified bonded grinding wheel, free water evaporates is discharged is called dry.Dry object is to improve the dry strength of base substrate, is convenient to processing before carrying, kiln, inspection, loading of kiln operation, and more can ensure to burn till time, base substrate be unlikely too high because of moisture content at low thermophase simultaneously, and evaporation is too fast and crack waste product.

The wet base of vitrified bonded grinding wheel is dry according to emery wheel description difference, several technique below general employing: the one, and natural drying, this method is applicable to little emery wheel and the wet base of disc wheel is dry; The 2nd, directly enter drying shed dry, it is not too large that this method is applicable to specification, and hardness is softer, and the thicker wet base of emery wheel of granularity is dried; The 3rd, it is dry that first natural drying certain hour is sent into drying shed again, it is larger that this method is applicable to specification, thickness is thicker, hardness is harder, granularity is dry compared with the wet base of the emery wheel of the more difficult eliminating of moisture in the wet base of fine grinding wheel, but this class emery wheel, due to self property and structure, easily produces distortion and crackle waste product in actual drying process.

The wet base drying shed of traditional vitrified bonded grinding wheel is dry, is to adopt hot-air convection seasoning.Be the convection heat transfer' heat-transfer by convection dewing base that utilizes dry hot-air, the water vapour being evaporated taken away simultaneously in wet base, wet base is dried.Wet base is in dry run, due to the psychrometric difference along thickness or external diameter, steam is constantly diffused into hot-air to outside from wet base inside, vapour content in hot-air increases gradually, if now hot-air overdrying, thereby in wet base, Free water diffusion will too fastly cause the wet base distortion of emery wheel even to crack.For preventing and avoid drying distortions and crackle, generally just taking slowly heats up to be dried extends drying time and slows down the method for programming rate, but so just makes the emery wheel production cycle extend, the qualified inefficiency of finished product.

Summary of the invention

The purpose of this utility model is the technical problem that solves that in the wet base dry run of large specification, high thickness, high rigidity, fine granularity vitrified bonded grinding wheel, moisture content is got rid of difficulty, the time is long, efficiency is low and easily produce dry body distortion and crackle waste product, provide one can make temperature in drying shed, humidity with wet base emery wheel temperature, humidity is balanced synchronize, thereby shorten drying time, increase work efficiency, reduce dry body is out of shape and the vitrified bonded grinding wheel of crackle waste product wets base drying shed.

The technical solution of the utility model is: a kind of vitrified bonded grinding wheel base drying shed that wets, comprise roof, two flank walls, rear wall and Qianmens, its improvements are that two flank walls are double layer hollow, inner wall is honeycomb wall, metope is provided with the circular hole that some sizes are identical, at the underground hot-air duct that is installed on of body of wall, body of wall top is installed on jet chimney, on hot-air and jet chimney, be equipped with the magnetic valve of adjustable steam flow amount, simultaneously in drying shed, install circulating fan additional, and be inserted with temperature, humidity sensor is connected to temperature, humidity controller.

Further scheme is: the circular hole on described inner wall metope is for being uniformly distributed, round-meshed area sum account for 30～40% of whole metope area.

The utility model is reasonable in design, novel structure, effectively improved the wet dry yield rate of base of vitrified bonded grinding wheel.The dry initial stage is used by the complete saturated recirculated hot air of water vapour and heats wet base, such hot-air only heats wet base can not seize the moisture content in wet base, after treating the inside and outside homogeneous heating of the wet base of emery wheel, magnetic valve on steam regulation pipeline, reduce the relative humidity of hot-air, the moisture content start vaporizer on wet base surface, the moisture content of wet base inside, with corresponding VELOCITY DIFFUSION on emery wheel blank surface, makes the inside and outside diffusion velocity balance of moisture content simultaneously.In dry run, by regulating the magnetic valve on hot-air duct, reach the temperature of controlling in drying shed.Pass through technology controlling and process, the wet base of emery wheel be in all the time one with the hot-air environment of self temperature, wetting balance in, avoid the generation of drying stress, both reached the object of the wet base of dry emery wheel, effectively prevent again the generation of blank deformation and crackle waste product, particularly good to the wet base drying effect of large specification, high thickness, high rigidity, fine granularity vitrified bonded grinding wheel.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A portion enlarged drawing of Fig. 1.

Detailed description of the invention

Further illustrate the utility model below by specific embodiment.

The vitrified bonded grinding wheel base drying shed that wets, comprise roof, two flank walls, rear wall and Qianmens, flank wall is consisted of the body of wall of hollow by brick wall 5 and round-meshed wallboard 7, and be inserted with temperature sensor 3 and humidity sensor 4, the underground thermal current pipeline 6 that additionally arranged, drying shed top has additionally arranged jet chimney 1, on pipeline 6 and pipeline 1, magnetic valve 8 is all housed, and circulating fan 2 is housed at top simultaneously.Concrete operations principle is: dry beginning, open magnetic valve 8 and circulation motor 2 on jet chimney 1, and open the magnetic valve 8 on thermal current pipeline 6 simultaneously, the drying cart of the base emery wheel that wets is housed for propelling after saturated recirculated hot air in room to be dried.In dry run, the data that transmit according to temperature sensor 3 and humidity sensor 4, carry out electromagnetic valve for adjusting 8 by the good drying curve of technique initialization and relative humidity curve and carry out temperature, humidity control operation, until complete drying curve task.Whole dry run, by technology controlling and process, the wet base of emery wheel be all in one with the hot-air environment of self wetting balance in be dried, avoided the generation of drying stress, effectively stopped emery wheel blank deformation and crackle waste product, reach the wet object of base of dry emery wheel.Use 10 of the wet bases of the dry 1-1600*135*305-PA/F60K7V-50m/s emery wheel of this drying shed, wet 30 of the bases of 1-500*150*305-GC/F150M6V-45m/s emery wheel whole qualified.

Claims (2)

1. the wet base drying shed of vitrified bonded grinding wheel, comprise roof, two flank walls, rear wall and Qianmens, its improvements are that two flank walls are double layer hollow, inner wall is honeycomb wall, metope is provided with the circular hole that some sizes are identical, at the underground hot-air duct that is installed on of body of wall, body of wall top is installed on jet chimney, on hot-air and jet chimney, be equipped with the magnetic valve of adjustable steam flow amount, simultaneously in drying shed, install circulating fan additional, and be inserted with temperature, humidity sensor is connected to temperature, humidity controller.

2. by the wet base drying shed of vitrified bonded grinding wheel described in claim 1, its improvements are that circular hole on described inner wall is for being uniformly distributed, round-meshed area sum account for 30～40% of whole metope area.