SU861457A1 - Casting machine - Google Patents

Description

one

The invention relates to leaf splaying apparatus for the manufacture of fiber pulp samples and can be used in research laboratories of the pulp and paper industry.

Known lnstotlivnoy apparatus containing consistently located on the bed mixing device, casting device, roller press, vacuum pump and pipelines I ..

A disadvantage of the known sheet-cutting apparatus: the fact is that the pouring of a portion of the mass into the casting device for the manufacture of a single paper sample is done manually using a dimensional transparent cylinder, which reduces the accuracy of the casting and the stability of the mass of the molded paper sheets.

The aim of the invention is to increase the accuracy of the casting due to the stability of the mass of the molded paper sheets.

This goal is achieved by the fact that a sheet-cutting apparatus containing a mixing device sequentially located on a bed, a casting device 0, a roller press, a vacuum pump and pipelines, has a gap set} Reptile moving the device and connected to it by means of a level indicator moving the dispenser in a vertical plane, mounted on a shifting device, and a distribution valve mounted on the frame and connected to the casting device. and dispenser .-.

FIG. 1 shows a leaf-removal apparatus, a general view; in fig. 2 — leaf-cutting apparatus in section; in fig. 3.- the layout of the sheet-cutting apparatus is functional; in fig. 4 is a schematic of the positions (1-V) of a control crane for a control device.

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Claims (1)

The sheet-cutting apparatus comprises a moving device 2 sequentially located on the bed I, a casting device 3, a roller press 4, a vacuum pump 5 and connecting pipelines. A dosing unit 6 is installed above the mixing device 2 and connected to it by means of a level indicator 7 in the form of a hollow tube. A means for moving the dispenser 6 in a vertical plane, made in the form of a guide 8 with a clamp 9, is fixed on the displacement device 2. A five-way distribution valve 10 is connected to the casting device 3 and the dispenser 6 to control the metering operations and pour the mass. (Fig. 3). The mixing device 2 consists of a container with transparent walls 11, a bottom 12 and a lid 13 fastened with stitches 14. On the cover 13 there is a bracket 15 attached to which the actuator 16 of the stirring member 17 and the guide 8 means for moving the dispenser in a vertical plane are attached. The dispenser 6 consists of a glass 18, transparent with a graduation scale, installed between the flanges 19 and 20 fastened with straps 21. A flange 22 is attached to the flanges 19 and 20, with which the dispenser 6 is mounted at the desired height and fixed on the guide 8 with a clip 9 At the bottom of the dispenser 6, a valve 23 with a hollow tube 24 is attached to the flange 20 for feeding the mass from the dispenser to the casting device. At the top of the dispenser 6 on the flange 19, a manifold 25 with holes for flushing the dispenser and a tube 26 with a flexible hose, through which alternately vacuum or water is fed, are reinforced. The casting device 3 consists of a transparent container 27 fixed by stitches 28 between the flanges 29 and 30. The base 31 of the casting device is fixed on the base 1 of the apparatus, in which is placed a ratchet with a tensioned grid 32. Inside the frame there is an absorbing chamber 33 having a vacuum tube cap 35, which protects the tube from falling into the filtrate. Sheet machine works as follows. In the mixing device 2 prepare a fibrous suspension of a certain concentration. Depending on the volume of fibrous mass to be dosed, the upper section of the level indicator 7 connecting the dispenser with a mixing device is combined with the desired scale of the dispenser 6. For this, the dispenser is moved with the help of a bar 22 in the guide 8 and fixed with a clip 9. Distribution valve 10 transferred to position I (Fig. 4), connecting the internal cavity of the dispenser 6 to the vacuum pump 5, the mass under the action of vacuum from the mixing device 2 through the tube 7 begins to flow into the dispenser at the moment when the mass closes the upper cf of the tube 7, the crane 10 is transferred to position II, in which the inner cavity of the dispenser is connected to atmosphere and under atmospheric pressure mass finds conductive leaching with the upper edge of the tube 7 is fed by it back to the mixer. By turning the plug 23, the mass through the hollow tube 24 is poured into the casting device; at the same time, the valve 10 is transferred to position III, the water from the water supply network through the collector 25 washes the dispenser and enters the drain device 3, diluted the mass to the required concentration. The crane 10 is transferred to the V position, the suction chamber 33 is connected to the vacuum pump 5, and the casting device 3 begins to drain and form a wet sheet of paper (cardboard) on the grid with the grid 32. After the molding process is completed, the valve 10 is transferred to the locked position IV, the transparent cup 27 The casting device folds away and the wet sheet of paper is removed from the grid and placed on a felt, which is placed in a roller press 4, where the paper is dried to 40-45% dry, and then onto a drying cylinder, where the paper is given final dryness. The main advantage of this sheet-cutting apparatus is that it eliminates the subjective factor in determining the volume of the mass to be poured into the casting device, and improves the accuracy of the ebb due to the stability of the mass of the molded paper sheets. In addition, the design of the apparatus makes it possible to automate the dosing and pouring process if the distribution valve is associated with a block of commands. Claims of the sheet-cutting apparatus comprising a moving device, a casting device, a roller press, a vacuum pump and pipelines sequentially arranged on a bed, characterized in that, in order to improve the accuracy of the casting due to the stability of the mass of the molded paper sheets, it has a dispenser mounted above the mixing plate device and connected to it by means of a level indicator, a means for moving the dispenser in a vertical plane, mounted on a mixing device, and distribution crane mounted on the frame and connected to the casting device and dispenser. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 400650, cl. D 21 F 13/02, 1972. .26 f9 FIG.