Drying device for fused quartz production

Abstract

The utility model relates to the technical field of fused quartz production, and specifically discloses a drying device for fused quartz production, which comprises a first drying mechanism and a second drying mechanism, wherein the first drying mechanism comprises a drying box arranged above the second drying mechanism, a conveyor belt installed in the drying box and provided with through holes on the surface, a drying cavity arranged in the drying box and located in the middle of the conveyor belt, and heating pipes arranged in the drying cavity in an array, the second drying mechanism comprises a drying cylinder arranged below the drying box, a spiral plate helically welded to the inner wall of the drying cylinder, and an outer cylinder coaxially sleeved to the outer side of the drying cylinder through a bearing, the first drying mechanism and the second drying mechanism can realize two-stage gradient drying, the first drying mechanism can quickly remove the moisture on the surface of the fused quartz, and the second drying mechanism can further dehydrate the fused quartz, so that the drying of the material is more thorough, the product quality is effectively improved, and the problem of uneven local drying is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fused silica production technology, and specifically discloses a drying device for fused silica production. Background Technology

[0002] Fused silica is a granular product with many excellent properties, such as a low coefficient of thermal expansion, good thermal stability, good electrical insulation, and good resistance to chemical corrosion. It also has some properties that are lacking in quartz glass products, such as good thermal conductivity. Due to its many excellent properties, it has been widely used since its invention. However, in the production process, drying equipment is required to dry fused silica.

[0003] Chinese Patent No. CN214842217U discloses a drying device for producing fused silica ceramic products, including an outer shell, a heat-conducting inner shell, a feeding port, and a heating chamber. A turntable is installed inside the heating chamber. A stirring rod is mounted on one side of the turntable via a connector, and a rotating rod is mounted on the other end of the turntable. A mounting frame is installed inside the heat-conducting inner shell below the heating chamber, and a heating rod is mounted on the mounting frame. This invention, by installing a turntable inside the heating chamber, with a stirring rod mounted on one side of the turntable via a connector and a rotating rod mounted on the other end, addresses the issue of uneven heating when drying fused silica ceramic material in the heating chamber with too much material. By using a handle to drive the rotating rod, the turntable rotates, causing the stirring rod on the turntable to agitate the material inside, ensuring even heating and effectively improving the drying efficiency of the device.

[0004] Although the aforementioned document can turn the material over to ensure that the dried material is heated evenly, it lacks a gradient drying function and can only dry fused silica in a single step, resulting in incomplete drying. Therefore, a drying device for fused silica production is needed to solve this problem. Utility Model Content

[0005] This invention proposes a drying device for fused silica production. It can achieve two-stage gradient drying through a first drying mechanism and a second drying mechanism. The first drying mechanism quickly removes moisture from the surface of the fused silica, and the second drying mechanism performs deep dehydration, ensuring that the hot air is in full contact with the material and making the material dry more thoroughly.

[0006] This utility model is implemented as follows: a drying device for fused silica production includes a first drying mechanism and a second drying mechanism. The first drying mechanism includes a drying box disposed above the second drying mechanism, a conveyor belt installed inside the drying box and having through holes on its surface, a drying chamber disposed inside the drying box and located in the middle of the conveyor belt, heating tubes arranged in an array inside the drying chamber, and a blower connected to the bottom of the drying chamber. The second drying mechanism includes a drying cylinder located below the drying chamber, a spiral plate spirally welded to the inner wall of the drying cylinder, a feed inlet and a discharge pipe respectively located on the outer wall of the drying cylinder, an outer cylinder coaxially sleeved on the outer side of the drying cylinder via bearings, a baffle plate inclinedly welded to the inner wall of the outer cylinder, a hot air inlet located on the outer cylinder, a bracket fixedly connected to the bottom of the outer cylinder, and a drive motor installed on the left side of the drying cylinder via the bracket, with its output end fixedly connected to the drying cylinder.

[0007] As a preferred embodiment of the drying device for fused silica production according to this utility model, the drying chamber is provided with a material guiding channel located at the lower right of the conveyor belt, the bottom end of the material guiding channel extends to the bottom of the drying chamber, and the material guiding channel is located directly above the feed inlet.

[0008] As a preferred embodiment of the drying device for producing fused silica according to this utility model, the upper surface of the drying chamber is a stainless steel perforated mesh plate.

[0009] As a preferred embodiment of the drying device for producing fused silica according to this utility model, the first drying mechanism further includes a feed hopper connected to the left side of the upper end face of the drying box, and an air outlet that extends through the center of the top of the drying box.

[0010] As a preferred embodiment of the drying device for fused silica production according to this utility model, the front end face of the drying box and the right side of the drying cylinder are both provided with door panels.

[0011] As a preferred embodiment of the drying device for fused silica production according to this utility model, a controller is installed on the outer wall of the drying box, and the conveyor belt and drive motor are both electrically connected to the controller.

[0012] The beneficial effects of this utility model are: Two-stage gradient drying can be achieved through the first and second drying mechanisms. The stainless steel perforated mesh plate on the upper surface of the drying chamber in the first drying mechanism ensures that hot air penetrates the material evenly and quickly removes the moisture from the surface of the molten quartz. Then, the material undergoes deep dehydration through the second drying mechanism. The spiral plate makes the material tumble continuously in the drying cylinder, and the baffle plate extends the hot air path to ensure that the hot air and the material are in full contact, making the material dry more thoroughly, effectively improving product quality, and avoiding the problem of uneven drying in certain areas. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a front sectional view of a drying device for producing fused silica according to this utility model.

[0015] Figure 2 This is a structural diagram of the second drying mechanism of this utility model.

[0016] Figure 3 This is a structural diagram of the drying chamber of this utility model.

[0017] The markings in the diagram are: 1. Drying box; 101. Feed hopper; 2. Conveyor belt; 201. Drying chamber; 202. Heating tube; 203. Blower; 204. Material guide channel; 3. Drying cylinder; 301. Spiral plate; 302. Drive motor; 4. Outer cylinder; 401. Hot air inlet; 402. Baffle plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0019] Please see Figure 1-3 A drying apparatus for producing fused silica, comprising a first drying mechanism and a second drying mechanism; The first drying mechanism includes a drying box 1 located above the second drying mechanism, a conveyor belt 2 installed inside the drying box 1 with through holes on its surface, a drying chamber 201 located inside the drying box 1 and in the middle of the conveyor belt 2, heating tubes 202 arranged in an array inside the drying chamber 201, and a blower 203 connected to the bottom of the drying chamber 201. The second drying mechanism includes a drying cylinder 3 located below the drying chamber 1, a spiral plate 301 spirally welded to the inner wall of the drying cylinder 3, a feed inlet and a discharge pipe respectively located on the outer wall of the drying cylinder 3, an outer cylinder 4 coaxially sleeved on the outer side of the drying cylinder 3 via bearings, a baffle plate 402 inclinedly welded to the inner wall of the outer cylinder 4, a hot air inlet 401 located on the outer cylinder 4, a bracket fixedly connected to the bottom of the outer cylinder 4, and a drive motor 302 installed on the left side of the drying cylinder 3 via the bracket and whose output end is fixedly connected to the drying cylinder 3.

[0020] In this embodiment: the fused quartz to be dried is put into the drying box 1 and falls onto the conveyor belt 2. The material is conveyed to the right by the conveyor belt 2. In the middle of the conveyor belt 2, the heating tube 202 located in the drying chamber 201 is energized and heats up. The heat generated raises the temperature inside the drying chamber 201. At the same time, the blower 203 works and blows the hot air in the drying chamber 201 onto the material on the conveyor belt 2. The hot air penetrates evenly and acts on the surface of the material to remove the moisture from the surface of the material. The material that has passed through the first stage of drying is conveyed to the right end by the conveyor belt 2 and enters the second drying mechanism. The drive motor 302 drives the drying cylinder 3 to rotate. The material entering the drying cylinder 3 is continuously pushed forward by the spiral plate 301 as the drying cylinder 3 rotates. At the same time, hot air enters the space between the outer cylinder 4 and the drying cylinder 3 through the hot air inlet 401 on the outer cylinder 4. The baffle plate 402, which is inclined and welded to the inner wall of the outer cylinder 4, extends the flow path of the hot air, so that the hot air is in full contact with the outer wall of the drying cylinder 3. The material in the drying cylinder 3 is heated by heat conduction. During the process of the material being pushed by the spiral plate 301, it continuously comes into contact with the inner wall of the drying cylinder 3 and other materials, so that it is heated evenly and achieves deep dehydration. Finally, the material after the secondary drying is discharged through the discharge pipe on the right side of the drying cylinder 3. Two-stage gradient drying can be achieved through the first and second drying mechanisms. The stainless steel perforated mesh plate on the upper surface of the drying chamber 201 in the first drying mechanism ensures that hot air penetrates the material evenly and quickly removes the moisture from the surface of the molten quartz. Then, the second drying mechanism performs deep dehydration. The spiral plate 301 makes the material tumble continuously in the drying cylinder 3, and the baffle plate 402 extends the hot air path to ensure that the hot air and the material are in full contact, making the material dry more thoroughly, effectively improving product quality, and avoiding the problem of uneven drying in certain areas.

[0021] As a technical optimization of this utility model, the drying box 1 is provided with a material guide channel 204 located at the lower right of the conveyor belt 2. The bottom end of the material guide channel 204 extends to the bottom of the drying box 1, and the material guide channel 204 is located directly above the feed inlet.

[0022] In this embodiment, the molten quartz that has been dried for the first time on the conveyor belt 2 can be fed into the drying cylinder 3 through the feed inlet via the material guide channel 204 for secondary drying.

[0023] As a technical optimization of this utility model, the upper surface of the drying chamber 201 is a stainless steel perforated mesh plate.

[0024] In this embodiment, the perforated stainless steel mesh ensures uniform hot air penetration.

[0025] As a technical optimization of this utility model, the first drying mechanism also includes a feed hopper 101 connected to the left side of the upper end face of the drying box 1, and an air outlet that passes through and is opened in the center of the top of the drying box 1.

[0026] In this embodiment: molten quartz to be dried can be put into the drying chamber 1 through the feed hopper 101, and the moisture in the drying chamber 1 can be discharged through the air outlet.

[0027] As a technical optimization of this utility model, door panels are provided on the front end of the drying oven 1 and the right side of the drying cylinder 3.

[0028] In this embodiment: opening the door panel facilitates internal maintenance of the drying chamber 1 and the drying cylinder 3.

[0029] As a technical optimization of this utility model, a controller is installed on the outer wall of the drying oven 1, and the conveyor belt 2 and the drive motor 302 are both electrically connected to the controller.

[0030] In this embodiment, the controller can control the conveyor belt 2 and the drive motor 302 to work normally.

[0031] The working principle and usage process of this utility model are as follows: The operator feeds the fused silica to be dried into the drying chamber 1 through the feed hopper 101. The controller starts the conveyor belt 2, and the material is conveyed to the right along the conveyor belt 2. In the middle of the conveyor belt 2, the heating tube 202 located in the drying chamber 201 is energized and heats up, raising the temperature inside the drying chamber 201. Simultaneously, the blower 203 operates, blowing hot air from the drying chamber 201 onto the material on the conveyor belt 2. Because the upper surface of the drying chamber 201 is a stainless steel perforated mesh plate, the hot air can penetrate evenly and act on the surface of the material, quickly removing moisture from the surface. During the drying process, the generated moisture is discharged through the vent in the center of the top of the drying chamber 1. The material dried in the first stage is conveyed to the right end along the conveyor belt 2 and enters the second drying mechanism through the feed inlet of the drying cylinder 3 via the guide channel 204 located at the lower right of the conveyor belt 2. The controller starts the drive motor 302, which drives the drying cylinder 3 to rotate. The material entering the drying cylinder 3 is continuously pushed forward by the spiral plate 301 as the cylinder rotates. Simultaneously, hot air enters the space between the outer cylinder 4 and the drying cylinder 3 through the hot air inlet 401 on the outer cylinder 4. The baffle plate 402, inclined and welded to the inner wall of the outer cylinder 4, extends the flow path of the hot air, ensuring full contact between the hot air and the outer wall of the drying cylinder 3, heating the material inside the drying cylinder 3 through heat conduction. During the process of being pushed by the spiral plate 301, the material continuously contacts the inner wall of the drying cylinder 3 and other materials, resulting in uniform heating and deep dehydration. Finally, the material after secondary drying is discharged through the discharge pipe on the right side of the drying cylinder 3.

[0032] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A drying apparatus for producing fused silica, characterized in that: It includes a first drying mechanism and a second drying mechanism; The first drying mechanism includes a drying box (1) disposed above the second drying mechanism, a conveyor belt (2) installed inside the drying box (1) and having through holes on its surface, a drying chamber (201) disposed inside the drying box (1) and located in the middle of the conveyor belt (2), heating tubes (202) arranged in an array inside the drying chamber (201), and a blower (203) connected to the bottom of the drying chamber (201). The second drying mechanism includes a drying cylinder (3) located below the drying box (1), a spiral plate (301) spirally welded to the inner wall of the drying cylinder (3), a feed inlet and a discharge pipe respectively located on the outer wall of the drying cylinder (3), an outer cylinder (4) coaxially sleeved on the outer side of the drying cylinder (3) via bearings, a baffle plate (402) inclinedly welded to the inner wall of the outer cylinder (4), a hot air inlet (401) located on the outer cylinder (4), a bracket fixedly connected to the bottom of the outer cylinder (4), and a drive motor (302) installed on the left side of the drying cylinder (3) via the bracket and whose output end is fixedly connected to the drying cylinder (3).

2. The drying apparatus for producing fused silica according to claim 1, characterized in that: The drying box (1) is provided with a material guide channel (204) located to the lower right of the conveyor belt (2). The bottom end of the material guide channel (204) extends to the bottom of the drying box (1) and is located directly above the feed inlet.

3. The drying apparatus for producing fused silica according to claim 1, characterized in that: The upper surface of the drying chamber (201) is a stainless steel perforated mesh plate.

4. A drying apparatus for producing fused silica according to claim 1, characterized in that: The first drying mechanism also includes a feed hopper (101) connected to the left side of the upper end face of the drying box (1) and an air outlet that passes through the center of the top of the drying box (1).

5. A drying apparatus for producing fused silica according to claim 1, characterized in that: Door panels are provided on the front end of the drying box (1) and the right side of the drying cylinder (3).

6. A drying apparatus for producing fused silica according to claim 1, characterized in that: The outer wall of the drying oven (1) is equipped with a controller, and the conveyor belt (2) and the drive motor (302) are both electrically connected to the controller.

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