SU379714A1 - LEAFLET DEVICE - Google Patents

Description

one

The invention relates to paper sample making machines and may find application in the pulp and paper industry.

Known waste-removal apparatus are known, comprising a frame, a casting device, a suction unit, a drying chamber with a hollow chamber lid, a vacuum pump, and a battery.

The purpose of the invention is to accelerate the pouring and drying of sheets.

It is achieved by the fact that the casting chamber of the apparatus is equipped with a removable lid with a fitting and sealed it with a seal, and the inner cavity of the lid of the drying chamber is filled with a heat-transfer fluid and is equipped with a heating element and a thermostat.

FIG. 1 shows the proposed apparatus, a general view; in fig. 2 is a section along L-A in FIG. one; in fig. 3 - drying chamber; in fig. 4 - battery; in fig. 5 - technological scheme of the device.

The leaf-removing apparatus consists of a bed / on which the casting device 2 is fixed, the drying chamber 3, the accumulator 4, the flaps 5 s. devices, vacuum pump b with the engine. The casting device 2 consists of a base 7, to which a casting chamber is attached to the sleeves 8, closed with a removable lid 9 with a fitting for supplying compressed

of air. A cover 10 and a grid cartridge // are installed in the lower part of the drain chamber. For tight closure of the drain chamber connector with the base 7, the cover 10 has an annular groove and rubber seals. When creating a vacuum through a three-way valve, the JO lid tightly and evenly presses against the base 7 and against the // Grid cassette. To the base 7, a suction chamber 12 is attached to the bottom, in the center of which is installed a tube 13 connected to a vacuum line, and on the body there is a valve 14 connecting the internal cavity with the atmosphere. The drying chamber consists of a housing 15, with which

The ball joint 16 is connected to the floor by a cover 17, the bottom is closed by a diaphragm 18. A heating element 19 and a thermostat are installed in the formed internal cavity filled with a heat-transfer fluid. AT

the casing 15 is inserted into a lattice with a grid 20, under which the vacuum chamber 21 is located and the chamber 22 into which cold water flows through the tube 23 and through the tube 24. In the cover 17 an annular groove is made. Vacuum is created simultaneously in the chamber 21 and in the cavity of the groove a to seal the cover 17 with the housing 75. Upon completion of the drying of the casting sample, the cover is retracted by the handle 25. Battery 4 is a vessel

with a lid 26, inside of which the partition 27 is placed, not income from the bottom to the bottom. The cover 26 is equipped with fittings 2S, which are connected to a vacuum pump and drying chambers. The sensors 29 and 30 are interlocked with the electromagnetic control valve 31 in such a way that when the sensor 29 reaches the condensate, the valve opens and the condensate flows out of the battery, and the sensor 30 closes the valve 30.

The sheet machine operates according to the principle of wet forming of castings on a grid under vacuum, under atmospheric or excessive pressure.

A certain amount of mass is poured into the casting device 2 and diluted with water coming from the filter 32 to the desired concentration. At low tide under vacuum, the suction chamber 12 through tube 13 is connected to the vacuum pump 6 by means of a crane 33. The required vacuum is established by valve 34 and monitored by a pressure gauge 35. At low pressure under atmospheric pressure, the suction chamber is connected to the atmosphere by valve 14. At low tide with overpressure, the casting device is closed with a cover 9. Compressor 36 creates pressure in the casting device. In this case, the valve 14 must be open. The pressure is controlled by the pressure gauge 57. The casting is a thin sheet of wet mass, removed from the casting device and transferred

into one of the drying chambers 5. By this time, the heat transfer medium in the drying chamber is heated by means of the heating element 19 to the required temperature set on the thermostat and controlled by a pressure gauge. Diaphragm / S transfers heat to wet casting, which, when heated, converts the remaining moisture into steam. The resulting vapor under the action of temperature difference between the vacuum chamber 21 and the chamber 22 washed with cold water is condensed and removed under the action of vacuum either into the vacuum pump 6 or into the accumulator 4 if the casting device is operating. Magnitude

The required vacuum in the drying chambers is established by the valve 5S and monitored by the pressure gauge 39 and the Y-shaped pressure gauges indicating residual pressure.

Subject invention

A sheet machine, containing a frame, a drain, a suction and drying unit with a hollow chamber lid, a vacuum pump, an accumulator, characterized in that, in order to speed up the pouring and drying of the sheets, the device’s cast chamber is equipped with a removable cap with a fitting and sealing seal, and the internal cavity The lid of the drying chamber is filled with a liquid coolant and is equipped with a heating element and a thermostat.

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