Expeller for pelletising timber wastes

IPC classes for russian patent Expeller for pelletising timber wastes (RU 2499671):

B27N3/28 - characterised by using extrusion presses

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Method of cooking of the food stuff by extrusion / 2293024

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Unit to produced extruded chipboards / 2422268

Invention relates to woodworking industry and may be used in production of extruded phenol formaldehyde resin-based chipboards. Proposed unit comprises extruder incorporating proportioner, guide device, heating plates provided with holes and distributors, collector with cavity formation devices with their working surfaces being provided with grooves communicated by through holes with inner space of cavity formation devices. To increase quality and reduce toxic emission, extruder heating plate holes and inner space of cavity formation devices are communicated with vacuum pump. Aforesaid proportioner is proved with tight casing while heating plates are communicated with tight inlet. Outlet of vacuum pump, tight casing and tight inlet are communicated with dust and volatile components trap. Said dust and volatile components trap is made up of spraying scrubber with its bottom section accommodating fluid collector provided with polypropylene filter. Scrubber top section accommodates confuser-diffuser devices with their tube space accommodating haydite filter nozzle. Scrubber is provided with absorbent feed line and sprinkling nozzles. Said absorbent feed line is communicated with fluid collector to form closed circulation system while sprinkling nozzles are arranged in every confuser-diffuser device.

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Complex for manufacture of fuel elements from saw dust / 2344164

Working elements of complex are made in the form of two flexible circuits with solid surfaces from rubberized tape, infinitely closed on drive and tension units installed on stands. Both circuits are installed in vertical plane. At that stand of the first circuit is oriented vertically, and stand of the second circuit - at sharp angle to stand of the first circuit. Both circuits are arranged as converging downwards, and branches of both circuits facing each other are installed with possibility of their resting on flat friction supports fixed on stands with coating of anti-friction material relative to material of circuits tape. On the sides tapes of circuits are limited with vertical walls. The first vertically oriented circuit is arranged with baffle partitions of triangular cross section installed normally to its surface and fixed in it with the same pitch. Sharp edges of partitions face the second circuit. Above upper tension units, loading device is installed with the possibility of continuous supply of saw dust into space between circuits. Device for continuous supply of liquid binder is also installed there for supply to the same space. Drive unit of the first vertically oriented circuit is installed below drive unit of the second slating circuit by at least one step of baffle partitions installation in the first circuit. Vertically oriented plate is installed on the side of the second circuit on the frame with the possibility of displacement relative to it and side walls in vertical plane, fixation on frame and interaction with its upper edge with external surface of the second circuit tape. Conveyor is installed under drive units with the possibility of molded raw fuel elements reception and transportation into drying department. Distance between branched of both circuits facing each other in area of lower units installation and distance between surface of the first circuit tape in area where it envelopes drive unit and plate surface is accepted as equal to height of partitions. Stands of both circuits in their upper part are connected to each other by screw couplings. Speeds of the first and second circuit tapes are accepted as different.

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The method of manufacture of building products from vegetable particles and device for its implementation / 2050272

The invention relates to the manufacture of building products, at least the boards consisting of a composition based on a binder and particles of plant origin, mainly wood (sawdust, twigs, straw, etc.,)

Complex for manufacture of fuel elements from saw dust / 2344164

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking and can be used for pelletising of timber wastes. Expeller comprises housing consisting of intake zone and zones of material compaction, forming of pellets and curing. Housing accommodate driven compaction screw with forming ledge. Hollow screw is furnished with tube for feeding of hot heat carrier for heating said screw and timber wastes in contact with its surface. Temperature gage is used to measure heating temperature.

EFFECT: higher efficiency and quality.

1 dwg

The invention relates to woodworking industry and can be used on wood processing enterprises for briquetting of wood waste.

Known press for briquetting of wood waste, comprising a housing consisting of a reception area, areas of compression moldable mass, forming briquettes, shutter speed, installed in the housing of the drive of the pressing screw with the forming protrusion heater. Pressing the screw is made hollow with a Central channel. The case is made with a capillary slit-like channels, which are oriented parallel to the axis of the press. On the body in the areas of pre-compression and forming briquettes installed the heater in the soaking zone is installed cooler [Patent SU # 1785505, 08.10.1990 G., B. I. No. 48].

The disadvantage of this design is the low efficiency and significant heat loss to the environment.

The technical result of the present invention is the reduction of energy consumption and improving the quality of briquettes.

The task is solved in that a screw press for briquetting of wood waste, comprising a housing 1 consisting of a reception zone 2, areas of compression moldable mass 3, forming briquettes 4, a shutter 5, mounted in the housing 1 of the drive conveyor screw 6 with the forming protrusion 7, and the drive of the pressing screw 6 is made hollow and supply the eh tube 8 for supplying hot fluid and a temperature sensor for measuring temperature.

In the drawing there is shown a screw press for briquetting of wood waste.

Screw press for briquetting of wood waste includes a housing 1 consisting of a reception zone 2, areas of compression moldable mass 3, forming briquettes 4, excerpts 5. In case 1 installed drive conveyor screw 6 with the forming protrusion 7. The pressure screw 6 provided with an internal cavity 9 in which the tube 8 hot fluid is mineral oil. Tube 8 is located coaxially to the axis of the screw 6 is stationary, on the surface of the tube 8 is placed ring 10 with overflow channels. For the brine has a modular device 11, line 12, pump 13, the heating device 14 with the sensor 15 and the device temperature control 16.

The device operates as follows. Shredded wood waste is fed into the receiving area of the raw material 2 and the screw 6 is pushed in the soaking zone 5. As a result of contact of wood waste on the surface of the screw 6 is heated to a temperature of hot fluid 150-300°C, which fills the inner cavity 9, gives heat to the body of the screw 6 and heats it. During the rotation of the screw 6, the coolant moves to the entrance area of the tube 8 into the cavity 9 and goes out through the annular gap between the tube 8 and the housing of the screw 6. The cooled coolant through a collecting device 11 is udaetsya in line 12, is moved by the pump 13 into the heating device 14 and then into the tube 8. For uniform heating of the auger 6 and the tube 8 is located coaxially to the axis of the screw 6 by means of rings 10 with overflow channels. For regulating the degree of heat on the surface of the tube 8 posted by sensor 15 connected to the device temperature control 16.

While the plastic viscosity of sawdust increases from wood highlights the natural binding components contributing to the formation of the briquette and to improve the strength characteristics of the latter. As a result of heating the moisture-containing sawdust is the formation of a pair and its evaporation in the inner layers of compressible mass, which also contributes to the increase in plastic viscosity. Excessive moisture in the form of steam is removed from the zone of acceptance of raw materials 2.

Screw press for briquetting of wood waste, comprising a housing consisting of a reception area and areas of compression moldable mass, molding pellets, extracts, and installed in case the drive of the pressing screw with forming a ledge, characterized in that the drive of the pressing screw is made hollow and provided with a tube for supplying hot fluid with a temperature sensor for measuring the temperature of the screw.