A stone paper continuous cooling device

Abstract

The present invention relates to a stone paper continuous cooling device, comprising a shaping device and a cooling device arranged on a frame, the cooling device comprising an air cooling mechanism and a water cooling mechanism, the air outlet of the air cooling mechanism facing the cooling roller of the water cooling mechanism; the cooling roller comprises two groups of end covers arranged in parallel and a shell located between the two groups of end covers, the shell is coaxially arranged with a main shaft and is mutually sleeved, a baffle is arranged in the space formed by the inner side of the shell and the outer side of the main shaft, the baffle is evenly arranged along the axial direction of the main shaft, the two ends of the main shaft are respectively connected to the water inlet pipe and the water outlet pipe through a rotating joint, and the water inlet pipe is connected to the circulating water pump, the cooling device and the water outlet pipe in sequence through a pipeline. The baffle is used to disturb the flow direction of the circulating water in the cooling roller, so that the cooling water stays in the cooling roller for as long as possible, the cooling load is concentrated in the cooling roller, so that the air cooling only bears a relatively small cooling load, thereby reducing the air volume of the cold wind, thereby reducing the moisture carried in the cold wind, and improving the quality of the finished paper.

Description

Technical Field

[0001] The invention relates to the field of stone paper production equipment, in particular to a stone paper continuous cooling device. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Stone paper is made of inorganic mineral powder as the main raw material, with a small amount of thermoplastic polymer materials and additives added, and is made by heating extrusion equipment, mixing, calendering, cooling and shaping. The molding and cooling process of stone paper is the key to ensuring the quality of stone paper. The cooling process of the product directly passing through the cooling roller after being extruded from the extruder die will affect the thickness adjustment of the stone paper; and the traditional cooling molding method is to quickly stick one side of the stone paper to the cooling roller to cool the stone paper, but this cooling method cools the roller-sticking side quickly and the non-roller-sticking side cools slowly, especially for products with thicker thickness, it will cause different shrinkage rates on the two sides, and the final product will curl after being spread out, affecting the quality of the product.

[0004] During the cooling process, the cooling rate has an important influence on the performance of the shaped paper. In order to speed up the cooling after extrusion, the current stone paper cooling equipment will be equipped with an air cooling mechanism for rapid cooling before shaping. The cold air blown by the air cooling mechanism has a high humidity. During the continuous production of stone paper, a large amount of high-humidity air passing through the paper will affect the quality of the finished paper, causing the inorganic mineral powder and other materials to lose water at different degrees, resulting in uneven shrinkage of the finished paper, and ultimately causing the finished stone paper to curl. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a stone paper continuous cooling device, wherein a plurality of baffles alternately arranged along the main axis of the cooling roller are provided inside the cooling roller, so as to disturb the flow direction of the circulating water in the cooling roller, so that the cooling water stays inside the cooling roller for as long as possible, and the cooling load is concentrated in the cooling roller as much as possible, so that the air cooling only bears a relatively small cooling load, thereby reducing the air volume of the cold air, thereby reducing the moisture carried in the cold air, and improving the quality of the finished paper.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] The first aspect of the present invention provides a stone paper continuous cooling device, comprising a shaping device and a cooling device arranged on a frame, the cooling device comprising an air cooling mechanism and a water cooling mechanism, the air outlet of the air cooling mechanism facing the cooling roller of the water cooling mechanism;

[0008] The cooling roller includes two groups of end covers arranged in parallel and an outer shell located between the two groups of end covers. The outer shell is coaxially arranged with the main shaft and is socketed with each other. A baffle is provided in the space formed by the inner side of the outer shell and the outer side of the main shaft. The baffle is evenly arranged along the axial direction of the main shaft. Both ends of the main shaft are respectively connected to the water inlet pipe and the water outlet pipe through a rotating joint. The water inlet pipe is connected to the circulating water pump, the cooling equipment and the water outlet pipe in sequence through a pipeline.

[0009] The shaping device is located at one end of the frame, and includes a slide seat arranged at one side of the frame, a horizontal cylinder is arranged on the slide seat, one end of the horizontal cylinder is connected to a rubber roller, a casting roller is arranged parallel to one side of the rubber roller, and one end of the casting roller is connected to a speed regulating motor.

[0010] The cooling device is located at the other end of the frame, and the cooling device includes an air cooling mechanism and a water cooling mechanism. The water cooling mechanism includes a cooling roller, and a speed regulating motor is connected to one end of the cooling roller; the air cooling mechanism includes a bellows arranged on one side of the water cooling roller, a fan is arranged in the middle of one side of the bellows, and a blowing device is arranged on the other side of the bellows, and the air outlet of the blowing device faces the roller surface of the cooling roller.

[0011] The water inlet pipe is provided with a water inlet temperature sensor, and the water outlet pipe is provided with a water outlet temperature sensor, which are used to obtain the temperature of water entering into the cooling roller and flowing out from the cooling roller respectively.

[0012] The main shaft is a hollow shaft with rotating joints at both ends. The rotating joints enable the cooling roller to be sealed and connected to the external pipeline in a rotating state. The cooling water enters the main shaft through the rotating joint via the external pipeline and enters the cooling roller from the water outlet on the side of the main shaft.

[0013] The baffles are evenly arranged along the axial direction of the main shaft. There is at least one group of baffles. Each group of baffles is connected to the inner wall of the shell and has an opening on the inner wall of the shell opposite to the connection point. The openings of multiple groups of baffles are arranged in a staggered manner.

[0014] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0015] 1. A plurality of baffles are arranged alternately along the main axis of the cooling roller to disturb the flow direction of the circulating water in the cooling roller, so that the cooling water stays in the cooling roller for as long as possible, and the cooling load is concentrated in the cooling roller as much as possible, so that the air cooling only bears a relatively small cooling load, thereby reducing the air volume of the cold air, thereby reducing the moisture carried in the cold air and improving the quality of the finished paper.

[0016] 2. Multiple groups of baffles are arranged continuously or staggered to form a spiral surface in the space where the cooling water flows, so that the cooling water flows continuously or in a spiral shape, thereby reducing the flow resistance inside the cooling roller and enhancing heat transfer.

[0017] 3. The introduction of the baffle changes the flow pattern of the cooling water (approximately spiral), thereby delaying or reducing the probability of scaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 1 is a schematic diagram of the cooling roller structure of the stone paper continuous cooling device provided by one or more embodiments of the present invention;

[0020] Figure 2(a)-Figure 2(c) is a schematic diagram of the internal baffle structure of a cooling roller provided by one or more embodiments of the present invention;

[0021] Figure 3 A schematic diagram of the effect of the baffle structure provided by one or more embodiments of the present invention on the flow of cooling water;

[0022] Figure 4 is a schematic diagram of a cooling cycle of a cooling roll provided by one or more embodiments of the present invention;

[0023] In the figure: 1. cooling roller, 2. circulating water pump, 3. cooling equipment, 11. housing, 12. baffle, 13. end cover, 14. water inlet pipe, 141. water inlet temperature sensor, 15. water outlet pipe, 151. water outlet temperature sensor, 16. main shaft. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] As described in the background technology, due to the different water loss degrees of inorganic mineral powder and other resin and auxiliary materials contained in stone paper, during the continuous production process, the rapid cooling of cold air will increase the humidity of the wind, resulting in uneven shrinkage of the finished paper, and finally causing the finished stone paper to curl. Therefore, the following embodiment provides a stone paper continuous cooling device, wherein a plurality of baffles arranged alternately along the main axis of the cooling roller are provided inside the cooling roller to disturb the flow direction of the circulating water in the cooling roller, so that the cooling water stays inside the cooling roller for as long as possible, and the cooling load is concentrated inside the cooling roller as much as possible, so that the air cooling only bears a relatively small cooling load, thereby reducing the air volume of the cold air, thereby reducing the moisture carried in the cold air, and improving the quality of the finished paper.

[0028] Embodiment 1:

[0029] like Figure 1-4 As shown, a stone paper continuous cooling device comprises a shaping device and a cooling device arranged on a frame, wherein the cooling device comprises an air cooling mechanism and a water cooling mechanism, and an air outlet of the air cooling mechanism faces a cooling roller 1 of the water cooling mechanism;

[0030] The cooling roller 1 includes two groups of end covers 13 arranged in parallel and a shell 11 located between the two groups of end covers 13. The shell 11 and the main shaft 16 are coaxially arranged and mutually sleeved. A baffle 12 is provided in the space formed by the inner side of the shell 11 and the outer side of the main shaft 16. The baffle 12 is evenly arranged along the axial direction of the main shaft 16. The main shaft 16 is a hollow shaft, and both ends are respectively connected to the water inlet pipe 14 and the water outlet pipe 15 through a rotating joint. The water inlet pipe 14 is connected to the circulating water pump 2, the cooling equipment 3 and the water outlet pipe 15 through a pipeline.

[0031] The shaping device is an existing structure, which is an equipment or device required for manufacturing stone paper by the casting method. For example, the shaping device can be set at one end of the frame, and the shaping device includes a slide seat set at one side of the frame, a horizontal cylinder is set on the slide seat, a rubber roller is connected to one end of the horizontal cylinder, a casting roller is set in parallel to one side of the rubber roller, and a first speed regulating motor is connected to one end of the casting roller.

[0032] The air cooling mechanism in the cooling device is an existing structure, which is used for making stone paper by the casting method, and blows cold air onto the cooling roller 1 so that the stone paper that is not in contact with the side of the cooling roller 1 is cooled; for example, a cooling device is arranged at the other end of the frame, and the cooling device includes a water-cooled roller, and a speed regulating motor is connected to one end of the water-cooled roller. The air cooling mechanism includes a bellows arranged on one side of the water-cooled roller, and a fan is arranged in the middle of one side of the bellows, and a uniform blowing device is connected to the other side of the bellows in a detachable manner.

[0033] The water inlet pipe 14 is provided with a water inlet temperature sensor 141 , and the water outlet pipe 15 is provided with a water outlet temperature sensor 151 , which are used to obtain the temperature of water entering into the cooling roller 1 and flowing out from the cooling roller 1 , respectively.

[0034] The circulating water pump 2 provides the power for the cooling water to flow in the pipeline, and the cooling water enters the interior of the cooling roller 1 through the water inlet pipe 14 of the cooling roller 1. The stone paper in production is tightly attached to the surface of the cooling roller 1. The cooling roller 1 rotates by itself, carrying the stone paper into the subsequent process. During the rotation, the heat of the part of the stone paper that is in contact with the cooling roller 1 is taken away by the cooling water, and the heat of the side that is not in contact with the cooling roller 1 is taken away by the cold air blown out by the air cooling mechanism, thereby achieving the cooling of the stone paper; after the cooling water flows out of the cooling roller 1 through the outlet pipe 15, it enters the cooling equipment 3 for cooling, and returns to the cooling roller 1 through the water inlet pipe 14 after being powered by the circulating water pump 2.

[0035] The cooling device 3 is an existing structure for maintaining the temperature of cooling water, for example, it can be a cooling tower.

[0036] A rotating joint is provided between the water inlet pipe 14 and the water outlet pipe 15 of the cooling roller 1 and the external pipeline, so that the cooling roller 1 can be sealed and connected with the external pipeline in a rotating state. The external pipeline enters the interior of the main shaft 16 through the rotating joint and enters the interior of the cooling roller 1 from the water outlet on the side of the main shaft 16.

[0037] like Figure 2(a)-Figure 2(c) As shown, the baffles 12 are evenly arranged along the axial direction of the main shaft 16, each baffle 12 is connected to the inner side wall of the housing 1, and an opening is left on the inner side wall of the housing 1 on the side opposite to the connection point, and the openings of the multiple groups of baffles 12 are staggered;

[0038] The shell 11 and the main shaft 16 form a hollow cylindrical space for the flow of cooling water, and the baffle 12 divides the space, so that the cooling water is disturbed when flowing inside the shell 11, increasing the turbulence of the cooling water, reducing the dead zone generated by the cooling water on the inner wall of the shell 1, and at the same time extending the flow stroke of the cooling water in the cooling roller 1, increasing the heat transfer area of ​​the cooling roller 1, and finally increasing the heat transfer capacity of the cooling roller 1, so that the cooling load of the stone paper is more concentrated on the cooling roller 1, thereby reducing the cooling load of the air cooling mechanism, and then reducing the humidity carried by the cold air, alleviating or avoiding the problem of uneven shrinkage of the stone paper, which leads to curling of the finished stone paper.

[0039] In this embodiment, the baffle 12 has three sets of angular relationships with respect to the main shaft 16, such as Figure 2(a)-Figure 2(c) As shown, the angles with the horizontal line of the center of the main shaft 16 are 120°, 180° and 30° respectively. The baffles of three groups of angles are arranged in parallel, and the continuous or staggered overlapping arrangement makes the space for the flow of cooling water form an approximate spiral surface, so that the cooling water flows continuously or in an approximate spiral shape, achieving the purpose of reducing the flow resistance inside the cooling roller 1 and enhancing heat transfer. When the cooling water flows, the flow separation generated at the edge of the baffle reduces the influence of excessive pressure drop caused by vortex separation.

[0040] In addition, the cooling water flowing inside the cooling roller 1 is prone to scale on the side wall of the shell 11, thereby reducing the heat transfer efficiency of the cooling roller 1. The introduction of the baffle 12 changes the flow pattern of the cooling water (approximately spiral), thereby delaying or reducing the probability of scaling.

[0041] At the same time, the baffle 12 is similar to a "rib plate" in structure, which enhances the strength of the cooling roller 1 and makes the volume of the cooling roller 1 larger, thereby meeting the design and manufacture of a wider range of stone paper cooling equipment.

[0042] The equipment of the above structure is provided with a plurality of baffles alternately arranged along the main axis of the cooling roller inside the cooling roller, which disturb the flow direction of the circulating water in the cooling roller, so that the cooling water stays inside the cooling roller for as long as possible, and the cooling load is concentrated inside the cooling roller as much as possible, so that the air cooling only bears a relatively small cooling load, thereby reducing the air volume of the cold air, thereby reducing the moisture carried in the cold air and improving the quality of the finished paper.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stone paper continuous cooling device, characterized by: It includes a shaping device and a cooling device arranged on a frame, wherein the cooling device includes an air cooling mechanism and a water cooling mechanism, and the air outlet of the air cooling mechanism faces the cooling roller of the water cooling mechanism; The cooling roller comprises two sets of end covers arranged in parallel and a shell located between the two sets of end covers. The shell is coaxially arranged with the main shaft and is sleeved with each other. A baffle is arranged in the space formed by the inner side of the shell and the outer side of the main shaft. The baffle is evenly arranged along the axial direction of the main shaft. The two ends of the main shaft are respectively connected to the water inlet pipe and the water outlet pipe through a rotating joint. The water inlet pipe is connected to the circulating water pump, the cooling equipment and the water outlet pipe in sequence through a pipeline. The baffles have at least one group, each group of baffles is connected to the inner wall of the outer shell, and each group of baffles has an opening on the inner wall of the outer shell on the side opposite to the connection point, and the openings of the multiple groups of baffles are arranged in a staggered manner; the angles of the baffles relative to the horizontal line of the center of the main shaft are 120°, 180° and 30° respectively, and the baffles of the three groups of angles are arranged in parallel. The continuous arrangement allows the space for the flow of cooling water to form an approximate spiral surface, so that the cooling water flows in an approximate spiral shape, thereby achieving the purpose of reducing the flow resistance inside the cooling roller and enhancing heat transfer.

2. A stone paper continuous cooling device as claimed in claim 1, characterized in that: The shaping device is located at one end of the frame, and includes a slide seat arranged at one side of the frame, a horizontal cylinder is arranged on the slide seat, one end of the horizontal cylinder is connected to a rubber roller, a casting roller is arranged parallel to one side of the rubber roller, and one end of the casting roller is connected to a speed regulating motor.

3. A stone paper continuous cooling device as claimed in claim 1, characterized in that: The cooling device is located at the other end of the frame, and the cooling device includes an air cooling mechanism and a water cooling mechanism; the water cooling mechanism includes a cooling roller, and one end of the cooling roller is connected to a speed regulating motor.

4. A stone paper continuous cooling device as claimed in claim 3, characterized in that: The air cooling mechanism comprises a bellows arranged on one side of the water-cooling roller, a fan is arranged in the middle of one side of the bellows, and a blowing device is arranged on the other side of the bellows.

5. A stone paper continuous cooling device as claimed in claim 4, characterized in that: The air outlet of the blowing device faces the roller surface of the cooling roller.

6. A stone paper continuous cooling device as claimed in claim 1, characterized in that: The water inlet pipe is provided with a water inlet temperature sensor.

7. A stone paper continuous cooling device as claimed in claim 6, characterized in that: The water outlet pipe is provided with a water outlet temperature sensor, and the water inlet temperature sensor and the water outlet temperature sensor are used to obtain the temperature of the water entering into the cooling roller and flowing out from the cooling roller respectively.

8. The stone paper continuous cooling device according to claim 1, characterized in that: The main shaft is a hollow shaft with rotary joints at both ends. The rotary joints enable the cooling roller to be sealed and connected to the external pipeline in a rotating state. The cooling water enters the main shaft through the rotary joint via the external pipeline and enters the cooling roller from the water outlet on the side of the main shaft.

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