Novel energy-saving tunnel kiln firing system

Abstract

The invention discloses a novel energy-saving tunnel kiln firing system which can reduce heat loss, save energy and reduce volume and weight of a kiln car. The novel energy-saving tunnel kiln firing system comprises a kiln body, tracks and a kiln car, wherein the tracks penetrate through along a kiln body channel, the kiln car is arranged on the tracks and slides on the tracks and comprises a frame with wheels, a heat-insulation layer, a high temperature-resistant strut, the heat-insulation layer is laid on the frame, a horizontally arranged high temperature-resistant beam frame for bearing products is supported at the top of the high temperature-resistant strut, the bottom of the high temperature-resistant strut is fixedly connected together with the frame after penetrating through the heat-insulation layer, the width of the heat-insulation layer and the width of the frame are smaller than that of the high temperature-resistant beam frame, a fixed kiln bottom with a heat-insulation function is arranged in the kiln body channel, the tracks are positioned below the kiln bottom, an open slot is arranged at the kiln bottom along the whole length of the kiln body, the height and width of the open slot are consistent with those of the heat-insulation layer, and the heat-insulation layer slides in the open slot.

Description

Technical field: [0001] The invention relates to a novel energy-saving tunnel kiln firing system. Background technique: [0002] Tunnel kiln is a kind of high-temperature firing equipment, which consists of preheating zone, firing zone and cooling zone. The fired products are put into the body to be fired, and the cycle is repeated to achieve the required daily output. [0003] The existing traditional tunnel kilns in industries such as architectural ceramics (including bricks and tiles), sanitary ware, daily-use porcelain, glass-ceramics and special ceramics are almost all such as attached figure 1 The structure shown is composed of kiln body 01, track 02 and kiln car 03 (kiln car includes car frame 04, heat insulation layer 05, high temperature resistant pillar 06 and backing plate 07 for loading products, etc.). The heat insulation layer 05 of the kiln car 01 forms a movable kiln bottom, and cooperates with the curved sealing structure of the kiln walls on both sides to...

AI Technical Summary

Problems solved by technology

The heat insulation layer 05 of the kiln car 01 forms a movable kiln bottom, and cooperates with the curved sealing structure of the kiln walls on both sides to realize sealing to prevent the escape of hot air in the kiln. This kind of kiln bottom structure uses the heat insulation layer 05 of the kiln car 01 as a movable kiln bottom structure , it is required that the width of the heat insulation layer 05 must be as wide as the width of the kiln channel 01a, so that the volume of the heat insulation layer 05 is larger, and the entire surface of the heat insulation layer 05 forms a heat absorbing surface, resulting in more heat absorbed by the heat insulation layer 05 During the firing process, a large number of kiln cars 03 continuously enter and leave the kiln body 01, which will cause a serious waste of heat. The backing plate 07 in the existing kiln car 03 is assembled by a large number of backing plate units. Moreover, this kind of assembly does not have a skeleton structure, which requires a large number of high-temperature-resistant pillars 06 to be densely arranged on the surface of the heat-insulation layer 05 for support. A large number of high-temperature-resistant pillars 06 are used, resulting in an increase in the manufacturing cost of the kiln car 03 The weight of the kiln car 03 increases, and this structure requires that the width of the backing plate 07 should be equal to the width of the heat insulation layer 05 and the frame 04, resulting in a larger width of the frame 04 and the heat insulation layer 05. This wider The structure of frame 04 and heat insulation layer 05 will not only increase the difficulty of manufacturing kiln car 03, but also cause kiln car 03 to absorb more heat, and frame 04 is very prone to thermal deformation, and the quality of kiln car 03 will also be affected. Greatly increased, the movement of kiln car 03 requires greater power support, which also causes energy waste

[0004] The kiln car 03 of the tunnel kiln must go through the process of preheating, high-temperature firing and cooling during the firing process of the product, and the kiln car 03 and the heat insulation layer 05 also need to absorb and release heat during this series of processes. Part of the heat is useless to the product, just a loss and waste

According to the heat absorption and heat release formula Q=CMΔt (Q is the heat absorbed, C is the specific heat capacity of the object, M is the mass of the object, and Δt is the temperature difference or temperature change), when C and Δt are the same, the kiln car is insulated The larger the area and thickness of layer 05, the greater its mass will be, resulting in greater heat Q absorbed and released, and a corresponding increase in the heat loss of the fired product

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