RU68552U1 - LINE FOR PRODUCTION OF CHIP AND CEMENT PLATES - Google Patents

Abstract

The utility model relates to construction and can be used for the production of chip cement or wood chip cement. The technical result of the utility model is to increase the quality of products and labor productivity, reducing the cycle time of forming plates. The essence of the utility model lies in the fact that the production line contains a transport system and a mixture preparation unit installed in the technological sequence, pressing equipment with molds for plates, a drying chamber, a chamber for holding plates, devices for cleaning and lubricating molds, a control system including programming , memory, control devices, equipment for the production of wood chips, installed in a separate line connected to the main line through a transport system s, machines for cutting slabs and manipulating devices for stacking, the disassembly of the stack of plates and moving empty molds. The mixture preparation unit includes component preparation and supply units made in the form of a chip supply unit, a binder supply unit, an aqueous glass solution preparation unit, an aluminum sulfate aqueous solution preparation unit, and a water supply unit. The mixture preparation unit is equipped with a calcium chloride supply unit, which is made in the form of a container with a screw installed with the possibility of changing the number of revolutions for dosed transfer of calcium chloride in the form of powder from the container directly to the mixer. 1 ill.

Description

The utility model relates to construction and can be used for the production of chip cement or wood chip cement.

Known production line for the production of building products according to the copyright certificate of the USSR 1763201, which includes technological equipment for the production of building panels.

A disadvantage of the known line is the insufficient automation of the production cycle and the lack of technological equipment for the production of chip-cement or chip-cement boards.

A device for the production of building boards based on wood waste and mineral binder according to the application EP 0189127.

The disadvantage of this device is the incompleteness of the technological cycle for the production of building panels.

The closest in technical essence is the production line for the production of chip-cement slabs for fixed formwork according to patent RU 59095 U1.

This production line contains a transport system and a mixture preparation unit installed in the technological sequence, pressing equipment with molds for plates, a drying chamber, a chamber for holding plates and devices for cleaning and lubricating the molds. The line also contains a control system, including programming, memory, control devices, equipment for the production of wood chips, installed as a separate line connected to the main line by means of a transport

systems, machine tools for sawing plates and handling devices for stacking, disassembling a stack of plates and moving empty forms. The mixture preparation unit includes component preparation and supply units made in the form of a chip supply unit, a binder supply unit, an aqueous glass solution preparation unit, an aluminum sulfate aqueous solution preparation unit, and a water supply unit.

The disadvantage of this line is the insufficient speed of manufacture of plates and their quality.

The objective of the utility model is to eliminate this drawback.

The technical result of the utility model is to increase the quality of products and labor productivity, reducing the cycle time of forming plates.

The specified technical result is achieved by the fact that the production line for the production of woodchip cement slabs contains a transport system and a mixture preparation unit installed in the technological sequence, including preparation and supply units of components made in the form of a chip supply unit, a binder supply unit, an aqueous solution preparation unit glass, a unit for preparing an aqueous solution of aluminum sulfate and a unit for supplying water, pressing equipment with molds for plates, a drying chamber, a chamber for holding pl um, devices for cleaning and lubricating molds, a control system including programming, memory, control devices, equipment for the production of wood chips, installed as a separate line connected to the main line by means of a transport system, machine tools for sawing plates and manipulating devices for stacking , disassembling a stack of plates and moving empty molds, while the unit for preparing the mixture is equipped with a unit for supplying calcium chloride, made in the form of a container with a screw installed with zmozhnostyu changing the number of revolutions

for dosed transfer of calcium chloride in the form of powder from the tank directly to the mixer.

The utility model is illustrated in the drawing, which shows the production line.

Automated production line includes the following components.

Equipment for the manufacture of wood chips is combined into one automatic production line, and for the manufacture of boards in another.

The automated production line includes distribution cabinets that regulate and control the entire installation, control all nodes. The installation for the production of plates is equipped with a memory programming control device.

The line includes a transport system, equipment for manufacturing wood chips, a mixture preparation unit, pressing equipment with molds for plates, a drying chamber, a chamber for holding plates and devices for cleaning and lubricating molds, machines for sawing plates and handling devices for stacking, disassembling a stack of plates and moving empty forms.

The mixture preparation unit includes components preparation and supply units, which are made in the form of a chip supply unit, a binder supply unit, an aqueous glass solution preparation unit, an aluminum sulfate aqueous solution preparation unit, a calcium chloride supply unit and a water supply unit. The site of supply of calcium chloride is made in the form of a tank equipped with a screw with an adjustable number of revolutions for a dosed supply of calcium chloride in the form of powder directly into the mixer.

The line works as follows.

The raw wood in the form of round wood with a diameter of 8-24 cm is placed on the primary storage site. With the help of a front-end loader, round wood is fed to the receiving conveyor. The receiving conveyor is made of a chain, equipped with an electric drive and mounted on metal racks. Then, with the help of a disconnector of logs, which is made in the form of a lever with a hydraulic drive, and a longitudinal chain conveyor, round wood enters the debarking device for removing bark. The longitudinal chain conveyor is a longitudinal groove along which the chain moves with stops. The log is located on the stops and moves inside the gutter. With a scraper conveyor, the bark is removed into a loading cone or container for further disposal. The scraper conveyor is made in the form of an open box along which a chain with transverse scrapers moves. A longitudinal conveyor combined with a log dumping unit feeds the debarked wood to the drive, from where it is fed by a front-end loader to a long-term storage area. When raw materials are ready, the front-end loader feeds round wood for wood chips. To do this, the cross conveyor feeds the wood to the log disconnector, from where they are fed to the longitudinal conveyors to the trimming unit and through the non-driven conveyor to the crushing device. From the crusher, the chips are fed by a scraper conveyor to the storage cone. An electric forklift with a bucket feeds the finished chips into an intermediate hopper, which is made in the form of a cube with beveled walls with a capacity of 3.5 cubic meters. To exclude caking chips, the intermediate hopper is equipped with a tedder, which is made in the form of a drive shaft passing through the hopper, with blades mounted on it. At the bottom of the hopper a screw is installed. Chips wake up on the auger and fed into the discharge window. From the intermediate silo

fed by a conveyor belt to the dispenser. This conveyor is installed at an angle, and the tape is provided with transverse ribs to hold the chips.

Cement is stored in a warehouse, which is a metal hopper with a diameter of 3.2 m and a height of 18 m. The warehouse is equipped with a pipe for pumping cement, a filter, a ladder for servicing the filter, a vibrator to prevent caking of cement, a purge system with compressed air and an auger for feeding cement into the mixer . The screw has a length of 7 m and is equipped with an electric drive controlled by a frequency converter.

The mixer is a container with mixing devices, equipped with a filling sensor. Several mixers can be used depending on production volumes. Separately, an aqueous solution of water glass and an aqueous solution of aluminum sulfate are prepared. A metered supply of water is carried out in the mixed mixture.

The unit for the preparation of an aqueous solution of liquid glass is made in the form of two metal containers of circular cross-section, mounted one above the other. The upper tank is equipped with fill level sensors, an electric valve for overflowing the solution from the upper tank to the lower one and pumps for pumping liquid glass into the upper tank and supplying the finished solution from the lower tank to the mixer.

The site for the preparation of an aqueous solution of aluminum sulfate is made similarly.

The feed unit of calcium chloride (calcium formate) provides the supply of this component in the form of powder directly into the mixer. The node is a metal container with a volume of 0.5 cubic meters. m equipped

a screw for transferring material from the tank to the mixer. Dosing is carried out by changing the number of revolutions of the screw.

The mixer ensures uniform mixing of all components and a continuous supply to the mold filling device.

For the formation of plates, the prepared mixture through the preliminary and final feeders is loaded in layers into forms moving along the conveyor.

Plastic or wooden molds are pre-lubricated with oil to prevent adhesion of wood-cement mixture to the mold material.

The molds are transported using a conveyor under the preliminary and final estrus, where the molds are filled with the mixture in layers in 2 stages, with the filling and distribution of the lower layer, then with additives in the upper and lower layer, filling and distribution of the upper layer.

The conveyor speed can vary depending on the thickness of the plates and is in a precisely defined ratio with the feed rate of the mixture and the metering hoppers.

The next technological transition - stacking, is carried out using a manipulator that automatically captures the completed form and feeds it to the stack rack. Forms are set on top of each other, in a package of 15 forms.

At the same time, the lower protrusion of the upper form during pressing evenly compacts the mixture laid in it. Pressing is performed on the press. At the end of pressing, the packages are pulled together with steel bands and transported by fork electric lift truck to the hardening (heat treatment) section.

The size of the package is 2300 × 700 × 1500 mm, the estimated weight is 2000 kg. The hardening process takes place in special chambers,

constructed at the hardening site.

An electric forklift truck loads 10 packages in 2 tiers. Operating temperature in the chamber + 40 ° С. Heat is created using water heaters.

The supply of hot water to the heaters, monitoring the constancy of temperature, turning off the heating equipment is performed automatically.

The duration of the hardening process in the chamber is 24 hours, the loading time is 2 hours. During the loading period, the illumination from the switch located on the external panel of the camera is turned on.

The camera has a tightly closing double-leaf gate that does not hamper the passage of the electric forklift.

In the hardening area, by means of heat treatment, the plates acquire strength sufficient to remove molds.

At the end of the heat treatment, the packages with an electric forklift are returned to the line where the package is unstacked, forms are removed on the stripping device, and the plates are cut.

Empty forms are fed to the device for cleaning adhered cement mixture with compressed air and returned to the beginning of the formation of slabs on the conveyor.

Next, the finished plates are collected in a pile and transported by an electric forklift to the ripening area.

Maturation occurs at a temperature not lower than + 16 ° C for 7 days using ventilation systems in chambers for holding plates. At the same time, moist air is removed and the stove is dried. The exhaust air is compensated by the supply of fresh air through a system of fans and heating heaters.

Plates are installed vertically with gaps for air access.

After 7 days of maturation, the plates should be aged (ripen) within 28 days. Maturation occurs in the areas of intermediate storage, the manufacture of plates with insulation, the manufacture of boxes, in the warehouse (ripening area) of plates and boxes.

For the manufacture of boxes to the desired size, the plates are cut on a cross-cutting machine ЦМЭ-ЗБ and on a multi-saw machine for straight-line longitudinal sawing to the size of the grade ЦДК5-3.

The manufacture of plates with insulation is made to order and shipped from the manufacturing and intermediate storage directly to the construction site after storage in the finished goods warehouse for at least three days.

The concepts described in the description of chip-cement, chip-cement or cement-chip boards are equivalent.

Thus, the introduction of a calcium chloride supply unit to the mixture preparation unit, which accelerates the hardening process and increases strength, made it possible to improve the quality of finished products and labor productivity, and to reduce the cycle time of plate formation.

Claims (1)

A production line for the production of wood-cement cement slabs, containing a transport system and a mixture preparation unit installed in the technological sequence, including components preparation and supply units made in the form of a chip supply unit, a binder supply unit, an aqueous glass solution preparation unit, an aqueous solution preparation unit aluminum sulfate and a water supply unit, pressing equipment with molds for plates, a drying chamber, a chamber for holding plates, devices for cleaning and lubricating molds, a control system control system, including programming, memory, control devices, equipment for the production of wood chips, installed as a separate line connected to the main line through the transport system, machine tools for sawing plates and manipulating devices for stacking, disassembling the stack of plates and moving blank forms, characterized the fact that the unit for preparing the mixture is equipped with a unit for feeding calcium chloride, made in the form of a container with a screw installed with the possibility of changing the number of revolutions pest for dosed transfer of calcium chloride in the form of powder from the tank directly to the mixer.