Mud atomizing spray head for preparing large ceramic plate and spray gun using same

Abstract

The invention relates to a mud atomizing spray head for preparing a large ceramic plate and a spray gun using the mud atomizing spray head. The mud atomizing spray head specially comprises a spray head body (1), a spray head cover body (2), a rotary joint (3), a rotational flow chamber, a double-rotational flow channel rotary plate and a jet nozzle, wherein the rotary joint is rigidly connected tothe upper end of the spray head body (1); the lower end of the spray head body (1) is connected to the spray head cover body (2); the spray head body (1) is hollowly arranged; the hollow part comprises a high-speed mud feeding channel and the rotational flow chamber; the double-rotational flow channel rotary plate is arranged below the rotational flow chamber; the jet nozzle is arranged on the spray head cover body; the upper end surface of the jet nozzle is of an inverted conical structure; and the lower end surface of the jet nozzle is an arc-shaped surface outlet. The double-rotational flow channel rotary plate is uniquely developed; the thickness of the rotational flow plate is increased; a rotational flow cutting angle is reduced; the high-pressure atomization is realized, and thus,the particle shape and gradation of powder are improved; and the natural bulk density of powder is improved.

Description

technical field [0001] The invention relates to the field of large ceramic slabs, in particular to a slurry atomizing nozzle for preparing large ceramic slabs and a spray gun using the same. Background technique [0002] "No big slab, no big brand", we can see the current trend of ceramic slabs (bricks). In recent years, whether it is at the CERSAIE exhibition in Bologna, Italy, or at various technical seminars related to the ceramic industry at home and abroad, or even in the promotion of large-scale ceramic equipment and production enterprises, ceramic slabs (bricks) and their forming equipment have become the most popular products without exception. Most compelling product. According to the standard of GB / T23266-2009, ceramic slabs (bricks) refer to ceramic tile products with a thickness not greater than 6mm and a surface area not less than 1.62m2. Compared with stone, ceramic slabs (bricks) have many advantages, such as uniform texture, high strength, isotropy, low wat...

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Problems solved by technology

[0003] In the prior art, ZL200820201333.0 invented an improved structure of a spray tower, which has a spray tower body, a nozzle and a raw material transportation pipe, and a connecting pipe is extended upwards at the connection position between the tower body cavity and the transportation pipe , connected with the transport pipe through the connecting pipe, so that the raw materials can be fully decomposed, but the atomization effect of this structure is poor, and the granulation effect is also poor; ZL201620177086.X invented a silicon nitride ceramic spray granulation powder machine, The nozzle is installed on the top of the drying tower. The raw material liquid is transported from the liquid storage tank through the slurry filter to the top of the spray drying tower by the metering pump, and dispersed after reaching the atomizer. The impact atomizer can evenly disperse the liquid into droplets The fresh air required for the drying process is heated to the required temperature by the blower through the air heater and then enters the hot air distributor in the drying tower. The evenly distributed air and the droplets are in contact with each other and mixed. The powder is discharged from the bottom. Although this method improves the atomization effect and fully decomposes the raw materials, the natural bulk density of the powder is not high and the fluidity is still poor.

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