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1. Single cylinder, fire tube (Spirally corrugated tube) and water tube.
2. Packaged style
3. Fuel can be wood,firewood, logs,waste.etc.
4. Hand fired type.
5. Capacity 1Ton-6Ton/HR
6.Design pressure:1.0Mpa(10bar),1.25Mpa(13bar),1.6Mpa(16bar)
7.Stem temperature:184C,194C,204C
8.Equipped with full set auxiliaries, after simple installation, the boiler can operate.

DZH series boiler is manual operation boiler which adopting manual fuel feeding, manual slag removing. The fuel can be firewood, wood logs, biomass pellets, peanuts shell, grain shell, etc. Equipped with special dust collector solution (water film dust collector, bag type static electricity dust collector, double towers desulfurization, etc.), it can realize automatic fuel feeding, automatic ash removing. It is the most popular products in Southeast Asia, Central Asia, Africa.
The boiler body adopts the form of upper pot barrel, water wall tube and set box in the overall structure.Drum by Ф 1200 x 12 cylinder and tube plate before and after the 1200 x 10 Ф compound and into.Water wall tube boiler tube for Ф 51 x 3.5, header for Ф 159 x 6 boiler tube, down tube for Ф 133 x 6 boiler tube.
This boiler adopts the latest scientific research achievements, such as arch tube plate, threaded smoke pipe, etc., which solve the problems of boiler shell lower drum, tube plate crack, low thermal efficiency, insufficient output and so on.
2. Combustion process
The fuel enters the furnace and burns on the grate, and the flue gas generated goes into the convection tube of both wings along the bottom of the pot through the exit smoke window on the figure 8 wall, enters the threaded pipe through the front smoke box, passes through the economizer and dust collector, and is pumped by the induced draft fan into the atmosphere through the chimney.
3. Technical features
(1) The pot barrel is composed of arch tube plate and threaded smoke pipe, so that the pot barrel is changed from a quasi-rigid body to a quasi-elastic body structure, and the stretch parts in the tube-plate area are eliminated to reduce the stress.The smoke pipe in the tube plate is changed from two return journey to single return journey, which solves the problem of crack in the tube plate.
(2) The bottom of the pot is arranged with an ascending pipe row, which eliminates the stagnant area at the bottom of the pot and makes the mud residue not easy to deposit. The high temperature area of the pot can be well cooled to prevent the bottom bulge of the pot.
(3) High efficiency heat transfer threaded smoke pipe is adopted to enhance the heat transfer effect and achieve the characteristics of boiler heating up and rapid pressure boost, thus improving the thermal efficiency of the boiler.
(4) Compact structure, compared with the same type of boiler, the shape size is small, save investment in boiler house infrastructure.
(5) Stable operation, convenient adjustment and sufficient output.
(6) The threaded smoke pipe is used to enhance the heat transfer, which improves the heat transfer coefficient and thermal efficiency, because the smoke has a disturbance effect in the pipe.Smoke tube is not easy to accumulate ash, play the role of cleaning.
(7) The eight-character wall in the furnace and the smoke window at the exit have a certain dust-lowering effect.The original dust emission concentration of the boiler is controlled below the standard to ensure that the soot emission of the boiler meets the national environmental protection regulations.
(8) The unique double-layer secondary air design improves the ignition condition of biomass fuel, adopts the independent air chamber, achieves the reasonable distribution of wind, forms an aerodynamic field favorable to combustion in the furnace, and makes the combustion temperature and combustion efficiency high.

Scope of application for DZH type steam boiler:
steam boiler is suitable for painting room, drying box, drying tower painting line and other purposes.It is especially suitable for central heating in urban residential areas, industrial production, enterprises and institutions, schools, hotels, bath centers and other places where heating, hot water and steam are needed.