CN112976289A - Preparation device and preparation method of fiber gypsum board - Google Patents

Abstract

The invention provides a preparation device of a fiber gypsum board, which comprises: a material distribution device; the batching bin is connected with the distributing device; the metering belt is connected with the batching bin; the water applying device is connected with the metering belt; the continuous press is connected with the water applying device; the slitting device is connected with the continuous press; the belt conveyor is connected with the slitting device; a dryer connected to the belt conveyor; the sawing device is connected with the dryer; the measuring mechanism is connected with the sawing device; and the conveyor is connected with the measuring mechanism. The invention adopts the continuous press to continuously apply pressure when preparing the fiber gypsum board, thereby realizing continuous production. The invention also provides a preparation method of the fiber gypsum board.

Description

Preparation device and preparation method of fiber gypsum board

Technical Field

The invention belongs to the technical field of fiber gypsum boards, and particularly relates to a preparation device and a preparation method of a fiber gypsum board.

Background

The fibrous gypsum board (also called gypsum fiber board, paperless gypsum board) is a new building board using building gypsum powder as main raw material and various fibers as reinforcing material. The fiber gypsum board is a new product developed successfully after the paper gypsum board is widely applied, and the surface protecting paper board is omitted, so that the application range is expanded except the whole application range of the paper gypsum board; the comprehensive performance of the gypsum board is superior to that of a paper-surface gypsum board, for example, the screw holding force of a fiber gypsum board with the thickness of 12.5 mm reaches 600N/square mm, while that of the paper-surface gypsum board is only 100N/square mm, so that the fiber gypsum board has nailing property and can be used for hanging things, but the paper-surface gypsum board cannot. Although the cost of the fiber gypsum board is slightly higher than that of the paper-surface gypsum board, the return rate of investment is higher than that of the paper-surface gypsum board, so the fiber gypsum board is a novel building board with great development potential.

The prior art can not realize continuous production when preparing the fiber gypsum board, and has lower production efficiency.

Disclosure of Invention

In view of the above, the present invention provides an apparatus and a method for manufacturing a fiber gypsum board, which can realize continuous production of the fiber gypsum board.

The invention provides a preparation device of a fiber gypsum board, which comprises:

a material distribution device;

the batching bin is connected with the distributing device;

the metering belt is connected with the batching bin;

the water applying device is connected with the metering belt;

the continuous press is connected with the water applying device;

the slitting device is connected with the continuous press;

the belt conveyor is connected with the slitting device;

a dryer connected to the belt conveyor;

the sawing device is connected with the dryer;

the measuring mechanism is connected with the sawing device;

and the conveyor is connected with the measuring mechanism.

Preferably, the measuring mechanism is further connected with the distributing device, the continuous press and the slitting device respectively, and the measuring results are fed back to the distributing device, the continuous press and the slitting device respectively.

Preferably, the batching bin is internally provided with a stirring roller.

Preferably, the continuous press is provided with a plurality of hydraulic cylinders in the conveying direction.

Preferably, the water applying device comprises a water tank and a water spraying hole, and the water spraying hole is arranged at the bottom of the water tank.

Preferably, the continuous press is a continuous roll press.

Preferably, the measuring mechanism is a laser ranging sensor.

The invention provides a preparation method of a fiber gypsum board, which comprises the following steps:

the fiber gypsum board is prepared by adopting the device in the technical scheme.

Preferably, the preparation method of the fiber gypsum board comprises the following steps:

the distributing device distributes the mixed material of the fiber and the gypsum powder to the proportioning bin, and the material in the proportioning bin is conveyed to the water applying device through the metering belt, so that the water and the powder are mixed to form wet material; the wet material enters a continuous press to compact the material to obtain a fiber gypsum plate blank; cutting the fiber gypsum plate blank in a slitting device to obtain a plate; conveying and solidifying the plate by a belt conveyor; the solidified plate enters a dryer for dehydration and drying; and the dried plate is cut by the saw cutting device, enters a measuring mechanism to detect the overall dimension, and is finally conveyed to a stack by a conveyor.

Preferably, the mass ratio of the fibers to the gypsum powder is 1: (2.8-6.2).

The invention provides a device and a process for continuously producing fiber gypsum boards, wherein a material distributing device uniformly distributes a mixture of fibers and gypsum powder to a proportioning bin, materials in the proportioning bin are firstly fed first and firstly, are metered and conveyed by a metering belt, are mixed with a water applying device at the tail end, and a continuous press is responsible for forming the fiber gypsum boards; and (3) cutting, solidifying and drying the formed plate blank to obtain a primary product, and finally sawing, measuring and stacking. The invention detects the overall dimension of the plate by the measuring mechanism, and the feedback data guides the adjustment of the material distributing device, the continuous press and the cutting device; the feedback of data can improve the yield and reduce the production waste.

Drawings

Fig. 1 is a schematic structural diagram of a fibrous gypsum board manufacturing apparatus provided in an embodiment of the present invention, where 1 is a material distribution device, 2 is a batching bin, 3 is a metering belt, 4 is a water application device, 5 is a continuous press, 6 is a slitting device, 7 is a belt conveyor, 8 is a dryer, 9 is a sawing device, 10 is a measuring structure, 11 is a conveyor, and 12 is a stack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other examples, which may be modified or appreciated by those of ordinary skill in the art based on the examples given herein, are intended to be within the scope of the present invention. It should be understood that the embodiments of the present invention are only for illustrating the technical effects of the present invention, and are not intended to limit the scope of the present invention. In the examples, the methods used were all conventional methods unless otherwise specified.

The schematic structural diagram of a preparation device of a fiber gypsum board provided by the embodiment of the invention is shown in fig. 1, and the invention provides a preparation device of a fiber gypsum board, which comprises:

a distributing device 1;

the proportioning bin 2 is connected with the distributing device;

the metering belt 3 is connected with the batching bin;

a water application device 4 connected with the metering belt;

a continuous press 5 connected to the water application device;

a slitting device 6 connected with the continuous press;

a belt conveyor 7 connected with the slitting device;

a dryer 8 connected to the belt conveyor;

a sawing device 9 connected with the dryer;

a measuring mechanism 10 connected with the sawing device;

a conveyor 11 connected to the measuring means.

In the invention, the distributing device is used for uniformly distributing the mixture of the fibers and the gypsum powder to the proportioning bin to form a material layer with certain width and thickness. In the invention, the material distribution device is preferably a spreading machine, the spreading machine is preferably provided with one or more groups of V-shaped crossed spiral conveyors, the crossed points of the spiral conveyors are preferably hinged, and the spiral conveyors are preferably driven by a motor to freely walk along the XY directions so as to realize uniform material distribution.

In the invention, the batching bin is preferably internally provided with a stirring roller for stirring a material layer onto a metering belt. In the invention, the proportioning bin preferably comprises a conveying belt and a bin, the conveying belt is preferably arranged at the bottom of the proportioning bin, and the bin is preferably arranged above the conveying belt and used for storing materials. In the invention, the proportioning bin is preferably fed from the upper part and discharged through the material poking roller.

In the present invention, the metering belt is used for accurately weighing and conveying materials. In the present invention, the metering belt is preferably a unit area scale, preferably comprising a weight plate and a conveyor belt, enabling weighing of the moving material.

In the invention, the water applying device is used for wetting the powder to form wet materials. In the invention, the water applying device preferably comprises a water tank and a water spraying hole, the water spraying hole is preferably arranged at the bottom of the water tank, the water tank keeps certain pressure, and water in the water tank is sprayed out through the water spraying hole to be fully mixed with the dry powder to form wet powder. In the invention, the aperture of the water spray hole is preferably 0.1-5 mm, more preferably 0.5-4 mm, more preferably 1-3 mm, and most preferably 2 mm. In the present invention, the water spray holes are preferably used in combination with the same hole diameter or in combination with a plurality of hole diameters.

In the invention, the continuous press is used for compacting and forming materials. In the invention, the continuous press can continuously apply pressure to realize continuous and uninterrupted production. In the present invention, the continuous press compacts the loose material by means of pressure to form a fibrous gypsum board slab; meanwhile, the continuous press also has a conveying function, so that the compacted blanks are conveyed out, and continuous production is realized. In the invention, the continuous press is preferably provided with a plurality of hydraulic cylinders along the conveying direction, and the materials are compacted while being conveyed. In the present invention, the continuous press is preferably a continuous roll press, and a hydraulic cylinder applies pressure to the press roll while the roll is rotated. In the invention, the continuous press is preferably of a segmented pressing structure, preferably divided into one segment to six segments, and stepped pressing is adopted.

In the invention, the cutting device is used for cutting the pressed fiber gypsum plate blank into single plates. In the present invention, the slitting device is preferably a water cutter, which cuts the fibrous gypsum mat with high-pressure water. The invention controls the geometric dimension of the plate through the slitting device.

In the present invention, the belt conveyor is used to convey and solidify the sheet material. In the present invention, the sheet is conveyed and solidified by the belt conveyor, and the conveying distance of the belt conveyor depends on the solidification time. In the invention, the length of the belt conveyor is preferably 20-140 meters, more preferably 50-100 meters, and most preferably 60-80 meters.

In the invention, the dryer is used for dehydrating and drying the plate. In the present invention, the length of the dryer depends on the yield and the moisture content of the board. In the invention, the dryer is preferably a tunnel dryer, and adopts roller way conveying, either single-layer roller way conveying or multi-layer roller way conveying.

In the invention, the sawing device is used for cutting the plate to the required geometric dimension. In the present invention, the sawing means preferably include a rip saw and a cross saw, and the four sides of the plate material are cut to a desired geometric size using a saw blade.

In the invention, the measuring mechanism is used for detecting the external dimension of the sheet material. In the present invention, the measuring means is preferably a laser ranging sensor.

In the present invention, the conveyor is used to convey the detected sheet material to the stack 12. In the present invention, the conveyor is preferably a roller and/or belt conveyor.

In the invention, the measuring mechanism is preferably further connected with the distributing device, the continuous press and the cutting device respectively, and the measured data is fed back to the distributing device, the continuous press and the cutting device respectively, so that the distributing device, the continuous press and the cutting device are adjusted. According to the invention, the measuring mechanism is used for detecting the overall dimension of the plate after the sawing device, the overall dimension is compared with a set value, and the difference value is fed back to the material distribution device, the continuous press and the slitting device, so that the respective set value is adjusted. In the invention, the external dimension of the prepared fiber gypsum board is related to the adjustment of a material distribution device, a continuous press and a cutting device.

In the invention, the data measured by the measuring mechanism is compared with a set value, if a difference value is generated, the measuring mechanism preferably feeds the measured data back to the material distributing device, the continuous press and the cutting device through optical fibers respectively, the material distributing device adjusts the feeding amount according to the feedback result, the continuous press adjusts the pressure according to the feedback result, and the cutting device adjusts the position of the cutting head according to the feedback result.

The invention provides a preparation method of a fiber gypsum board, which comprises the following steps:

the fiber gypsum board is prepared by adopting the device in the technical scheme.

In the present invention, the method for preparing the fiber gypsum board preferably comprises:

the distributing device distributes the mixed material of the fiber and the gypsum powder to the proportioning bin, and the material in the proportioning bin is conveyed to the water applying device through the metering belt, so that the water and the powder are mixed to form wet material; the wet material enters a continuous press to compact the material to obtain a fiber gypsum plate blank; cutting the fiber gypsum plate blank in a slitting device to obtain a plate; conveying and solidifying the plate by a belt conveyor; the solidified plate enters a dryer for dehydration and drying; and the dried plate is cut by the saw cutting device, enters a measuring mechanism to detect the overall dimension, and is finally conveyed to a stack by a conveyor.

In the present invention, the fibers preferably include one or more of wood fibers, bamboo fibers and glass fibers.

In the invention, the particle size of the gypsum powder is preferably 80-240 meshes, more preferably 100-200 meshes, most preferably 130-170 meshes, and most preferably 150 meshes.

In the present invention, the mass ratio of the fiber to the gypsum powder is preferably 1: (2.8-6.2), more preferably 1: (3-6), most preferably 1: (4-5).

In the invention, the material distribution device distributes the mixed material of the fiber and the gypsum board to the batching bin to form a material layer with certain width and thickness, and the thickness of the material layer is preferably dozens of millimeters to hundreds of millimeters, more preferably 20-120 mm, more preferably 50-100 mm, and most preferably 60-80 mm. In the present invention, the material distribution device preferably performs dynamic material distribution in both the longitudinal and transverse directions. In the invention, the material distribution device preferably uniformly distributes the mixed material of the fiber and the gypsum powder on the proportioning bins layer by layer to form a material layer with certain width and thickness.

In the present invention, the material accurately weighed by the metering belt is conveyed forward, and through the water application device, water and powder (mixed material of fiber and gypsum board) are sufficiently mixed to form a wet material. In the present invention, the mass ratio of the water to the powder is preferably 1: (1.2-2), more preferably 1: (1.5 to 1.8), most preferably 1: 1.6.

in the invention, the pressure of the wet material entering the continuous press during the process of compacting the material is preferably 60-300 bar, more preferably 100-250 bar, and most preferably 150-200 bar.

In the invention, the formed plate blank is cut into single plates by the cutting device along the longitudinal direction and the transverse direction, and the cutting size is adjusted according to the requirement. In the invention, the size of the plate is preferably 1.2-2.4 meters, more preferably 1.5-2 meters, and most preferably 1.6-1.8 meters.

In the invention, the solidification time of the plate when conveyed and solidified by the belt conveyor is preferably 3-15 min, more preferably 5-10 min, and most preferably 6-8 min.

In the present invention, the drying time depends on the yield and the moisture content of the board. In the invention, the drying temperature in the dehydration drying process is preferably 180-350 ℃, more preferably 200-300 ℃, more preferably 230-270 ℃, and most preferably 250 ℃.

In the invention, the size of the plate cut by the sawing device is preferably 1.2-2.4 meters, more preferably 1.5-2 meters, and most preferably 1.6-1.8 meters.

In the invention, if the measuring mechanism detects that the overall dimension is deviated from the pre-obtained dimension, preferably, the measuring structure respectively feeds back the measuring results to the material distributing device, the continuous press and the cutting device, and the parameters of the material distributing device, the continuous press and the cutting device are adjusted to obtain the plate with the required dimension.

The invention provides a continuous production process of a fiber gypsum board. In the invention, the material distributing device uniformly distributes the mixture of fiber and gypsum powder to the proportioning bins, the materials in the proportioning bins are firstly fed first and then are mixed with the wet water device at the tail end through the metering belt, and the continuous press is responsible for the molding of the fiber gypsum board; and (3) cutting, solidifying and drying the formed plate blank to obtain a primary product, and finally sawing, measuring and stacking. According to the invention, a measuring mechanism detects the overall dimension, and feedback data guides the adjustment of a material distribution device, a continuous press and a slitting device; the feedback of data can improve the yield and reduce the production waste.

While only the preferred embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. A device for making a fibrous gypsum board, comprising:

a material distribution device;

the batching bin is connected with the distributing device;

the metering belt is connected with the batching bin;

the water applying device is connected with the metering belt;

the continuous press is connected with the water applying device;

the slitting device is connected with the continuous press;

the belt conveyor is connected with the slitting device;

a dryer connected to the belt conveyor;

the sawing device is connected with the dryer;

the measuring mechanism is connected with the sawing device;

and the conveyor is connected with the measuring mechanism.

2. The apparatus of claim 1, wherein the measuring mechanism is further connected to the distributing device, the continuous press, and the slitting device, respectively, and feeds the measurement results back to the distributing device, the continuous press, and the slitting device, respectively.

3. The device of claim 1, wherein a kickoff roller is disposed inside the batch bin.

4. The device according to claim 1, characterized in that the continuous press is provided with a plurality of hydraulic cylinders in the conveying direction.

5. The device of claim 1, wherein the water application device comprises a water tank and a water jet, the water jet being disposed at a bottom of the water tank.

6. The apparatus of claim 1, wherein the continuous press is a continuous roll press.

7. The device of claim 1, wherein the measuring mechanism is a laser ranging sensor.

8. A method of making a fibrous gypsum board, comprising:

a fibrous gypsum board made using the apparatus of claim 1.

9. The method of claim 8, wherein the fibrous gypsum board is prepared by a method comprising:

the distributing device distributes the mixed material of the fiber and the gypsum powder to the proportioning bin, and the material in the proportioning bin is conveyed to the water applying device through the metering belt, so that the water and the powder are mixed to form wet material; the wet material enters a continuous press to compact the material to obtain a fiber gypsum plate blank; cutting the fiber gypsum plate blank in a slitting device to obtain a plate; conveying and solidifying the plate by a belt conveyor; the solidified plate enters a dryer for dehydration and drying; and the dried plate is cut by the saw cutting device, enters a measuring mechanism to detect the overall dimension, and is finally conveyed to a stack by a conveyor.

10. The method of claim 9, wherein the mass ratio of the fibers to the landplaster is 1: (2.8-6.2).

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