A precipitated silicon dioxide production and purification device

Abstract

The present invention is applicable to the field of silicon dioxide production, and provides a precipitated silicon dioxide production and purification device, including a base, a mounting frame fixedly connected to the base, and a drum, the drum is rotatably arranged in the mounting frame, an annular filter plate is fixedly connected in the drum, the annular filter plate divides the inside of the drum into a first purification chamber and a second purification chamber, the first purification chamber is located inside the second purification chamber, both sides of the drum are fixedly connected with a tube shaft, the tube shaft is rotatably connected to the mounting frame, the mounting frame is also provided with a first driving member, the first driving member is used to drive the tube shaft on either side to rotate, and the tube shafts on both sides are connected to the first purification chamber. Its beneficial effects are: separating silicon dioxide particles that do not meet the purification requirements, eliminating the tedious operation of screening; due to the rotation of the drum, the silicon dioxide particles can be continuously flipped, thereby improving the purification effect.

Description

Technical Field

[0001] The invention belongs to the field of silicon dioxide production, and in particular relates to a precipitated silicon dioxide production and purification device. Background Art

[0002] Silicon dioxide is the raw material for manufacturing glass, quartz glass, water glass, optical fibers, important components of the electronics industry, optical instruments, handicrafts and refractory materials. It is also an important material for scientific research.

[0003] The methods of manufacturing silicon dioxide are mainly divided into physical methods and chemical methods. The chemical method can produce purer and more uniform silicon dioxide particles, while the chemical methods are mainly precipitation method and gas phase method. Among them, precipitation method is more commonly used. Silicon dioxide prepared by precipitation method is generally called precipitated silicon dioxide.

[0004] However, impurities also exist in the carbon dioxide particles obtained by the precipitation method, so they need to be purified to obtain purer silicon dioxide. Usually, chlorine or chlorine compound gas is introduced into the carbon dioxide under high temperature environment, and the carbon dioxide particles are made to flow and contact with the gas to obtain purified silicon dioxide. In the existing purification device, the silicon dioxide does not flow thoroughly and the contact with the gas is insufficient, resulting in unsatisfactory purification effect. In addition, there are size requirements for purified silicon dioxide. Generally, the particle size must be less than 300 mesh. Particles that are too large will reduce the purification effect. Therefore, screening is required before purification, which is relatively cumbersome. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a precipitated silica production and purification device, aiming to solve the problems mentioned in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a precipitated silica production and purification device includes a base, a mounting frame is fixedly connected to the base, and further includes:

[0007] The drum is rotatably arranged in the mounting frame, an annular filter plate is fixedly connected in the drum, and the annular filter plate divides the inside of the drum into a first purification chamber and a second purification chamber, wherein the first purification chamber is located inside the second purification chamber;

[0008] Both sides of the drum are fixedly connected with a tube shaft, which is rotatably connected to the mounting frame, and the mounting frame is also provided with a first driving member, which is used to drive the tube shaft on either side to rotate, and the tube shafts on both sides are connected to the first purification chamber, wherein the tube shaft on one side is used to transport high-temperature processing gas into the first purification chamber, and the tube shaft on the other side is used to discharge the processing gas in the drum;

[0009] The material inlet and outlet structure is arranged on the drum and the annular filter plate, and is used to discharge the materials in the first purification chamber and the second purification chamber, or to put the materials into the first purification chamber.

[0010] Preferably, a fan and a heating box are fixedly connected to one side of the mounting frame, the fan and the heating box are communicated with each other through a first pipe, a second pipe is arranged at the output end of the heating box, the other end of the second pipe is located in a tube axis on one side and is arranged toward the first purification chamber, a delivery pipe connected to an external processing gas generating device is fixedly connected to one side of the heating box, and a discharge pipe is rotatably arranged in the tube axis on the other side.

[0011] Preferably, the material inlet and outlet structure includes a pipe slidably arranged on the drum and the annular filter plate, the pipe is arranged radially along the drum, and also includes a driving unit arranged on the drum, the driving unit is used to drive the pipe to move along its own length direction, when the pipe is in the initial state, the part of the pipe located in the first purification chamber is set with a predetermined length.

[0012] Preferably, the driving unit includes an adjusting screw rotatably arranged on the side of the drum opposite to the pipe fitting, one end of the adjusting screw located outside the drum is fixedly connected to a driving disk, a sleeve is fixedly arranged inside the pipe fitting, a discharge gap is arranged between the sleeve and the pipe fitting, the pipe fitting and the sleeve are fixedly connected by a plurality of cross bars, and the sleeve is fitted onto the adjusting screw.

[0013] Preferably, a second driving member is fixedly connected to the top of the mounting frame, and a driving wheel is fixedly provided at the output end of the second driving member. When the pipe fitting and the adjusting screw are in a vertical state and the driving disk is located on the top of the drum, the driving disk is in contact with the driving wheel, and the driving wheel is located on one side of the driving disk.

[0014] Preferably, the diameters of the drum and the annular filter plate at the connection points with the pipe are larger than the diameters of the two sides thereof.

[0015] Preferably, a feeding pipe for feeding materials is fixedly arranged on the top of the mounting frame. When the pipe fitting and the adjusting screw are in a vertical state and the driving disk is located at the bottom of the drum, the feeding pipe is aligned with the pipe fitting, and one end of the pipe fitting located outside the drum is fixedly connected with a flaring pipe.

[0016] Preferably, a material receiving unit located in a mounting frame is provided on the base.

[0017] Preferably, the material receiving unit includes a horizontal plate, to which a vertically arranged material receiving pipe is fixedly connected. The material receiving pipe has the same size as the pipe fitting, and an inclined material guide pipe is fixedly connected to the top of the material receiving pipe. Elastic telescopic rods are fixedly arranged on both sides of the material receiving pipe on the horizontal plate, and the other end of the elastic telescopic rods is fixedly connected to the base.

[0018] The embodiment of the present invention provides a precipitated silica production and purification device, which has the following beneficial effects: ① The present invention adds silica to be purified into the first purification chamber through the material inlet and outlet structure, so during the rotation of the drum, due to the filtering effect of the annular filter plate, silica with smaller particles will enter the second purification chamber. Since the second purification chamber is located outside the first purification chamber and the high-temperature processing gas diffuses from the first purification chamber to the second purification chamber, the purification degree in the first purification chamber is higher, which not only separates the silica particles that do not meet the purification requirements, but also effectively purifies the silica particles in the first purification chamber and the second purification chamber, eliminating the tedious operation of screening;

[0019] ② Due to the rotation of the drum, the dioxide particles can be continuously turned over, ensuring that they are fully in contact with the treated gas, thereby improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front cross-sectional view of a precipitated silica production and purification device provided in an embodiment of the present invention;

[0021] Figure 2 A side cross-sectional view of a precipitated silica production and purification device provided in an embodiment of the present invention;

[0022] Figure 3 A three-dimensional schematic diagram of a drum and its internal structure provided by an embodiment of the present invention;

[0023] Figure 4 for Figure 1 A partial enlarged view of the middle A;

[0024] Figure 5 A schematic diagram of the structure of the pipe provided in an embodiment of the present invention when it is moved to dock with the first purification chamber;

[0025] Figure 6 A schematic diagram of the structure of the pipe provided in an embodiment of the present invention when it is moved to dock with the second purification chamber;

[0026] Figure 7 A schematic diagram of the structure of the pipe provided in an embodiment of the present invention when it is moved to dock with the injection pipe;

[0027] Figure 8 A schematic diagram of the structure of the annular filter plate and the inner wall of the drum after the shape is changed according to an embodiment of the present invention;

[0028] In the accompanying drawings: 1-base; 2-mounting frame; 3-drum; 4-annular filter plate; 5-first purification chamber; 6-second purification chamber; 7-tube shaft; 8-first driving member; 9-inlet and outlet structure; 901-pipe fitting; 902-driving unit; 9021-adjusting screw; 9022-driving disk; 9023-sleeve; 9024-discharge gap; 9025-cross bar; 10-fan; 11-heating box; 12-first pipeline; 13-second pipeline; 14-conveying pipe; 15-discharge pipe; 16-dosing pipe; 17-second driving member; 18-driving wheel; 19-material receiving unit; 1901-cross plate; 1902-material receiving pipe; 1903-material guiding pipe; 1904-elastic telescopic rod; 20-expanding pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1 and Figure 3 As shown, it is a structural diagram of a precipitated silica production and purification device provided by one embodiment of the present invention, comprising:

[0032] A base 1, to which a mounting frame 2 is fixedly connected, further comprising:

[0033] The drum 3 is rotatably arranged in the mounting frame 2 , and an annular filter plate 4 is fixedly connected to the drum 3 . The annular filter plate 4 divides the interior of the drum 3 into a first purification chamber 5 and a second purification chamber 6 . The first purification chamber 5 is located inside the second purification chamber 6 .

[0034] A tube shaft 7 is fixedly connected to both sides of the drum 3, and the tube shaft 7 is rotatably connected to the mounting frame 2. The mounting frame 2 is also provided with a first driving member 8, and the first driving member 8 is used to drive the tube shaft 7 on either side to rotate. The tube shafts 7 on both sides are connected to the first purification chamber 5, and the tube shaft 7 on one side is used to transport high-temperature processing gas into the first purification chamber 5, and the tube shaft 7 on the other side is used to discharge the processing gas in the drum 3.

[0035] The material inlet and outlet structure 9 is arranged on the drum 3 and the annular filter plate 4 , and is used to discharge the materials in the first purification chamber 5 and the second purification chamber 6 , or to put the materials into the first purification chamber 5 .

[0036] In one embodiment of the present invention, the present invention adds the silicon dioxide to be purified into the first purification chamber 5 through the material inlet and outlet structure 9. Therefore, during the rotation of the drum 3, due to the filtering effect of the annular filter plate 4, the silicon dioxide with smaller particles will enter the second purification chamber 6. Since the second purification chamber 6 is located outside the first purification chamber 5 and the high-temperature processing gas diffuses from the first purification chamber 5 to the second purification chamber 6, the degree of purification in the first purification chamber 5 is higher, which not only separates the silicon dioxide particles that do not meet the purification requirements, but also effectively purifies the silicon dioxide particles in the first purification chamber 5 and the second purification chamber 6, eliminating the tedious operation of screening. Due to the rotation of the drum 3, the silicon dioxide particles can be continuously turned over to ensure that they are in full contact with the processing gas, thereby improving the purification effect.

[0037] In one embodiment of the present invention, the first driving member 8 can be a motor, or a hydraulic motor. The first driving member 8 can drive the pipe shaft 7 to rotate through a belt or a chain, thereby rotating the drum 3 in the mounting frame 2; Figure 1 As shown, a fan 10 and a heating box 11 are fixedly connected to one side of the mounting frame 2, and the fan 10 and the heating box 11 are connected through a first pipe 12. A second pipe 13 is provided at the output end of the heating box 11, and the other end of the second pipe 13 is located in the tube axis 7 on one side and is arranged toward the first purification chamber 5. A delivery pipe 14 connected to an external processing gas generating device is fixedly connected to one side of the heating box 11, and a discharge pipe 15 is rotatably arranged in the tube axis 7 on the other side, and the other end of the discharge pipe 15 can be connected to the heating box 11, so as to realize the function of recycling high-temperature processing gas. The gas can be chlorine or chlorine compound gas, and the inlet and outlet structure 9 can adopt a closable gate arranged on the side wall of the annular filter plate 4 and the drum 3, and the silicon dioxide in the first purification chamber 5 and the second purification chamber 6 can be discharged respectively by sequential operation.

[0038] like Figure 2 As shown, as a preferred embodiment of the present invention, the material inlet and outlet structure 9 includes a pipe 901 slidably arranged on the drum 3 and the annular filter plate 4, the pipe 901 is arranged radially along the drum 3, and also includes a driving unit 902 arranged on the drum 3, the driving unit 902 is used to drive the pipe 901 to move along its own length direction, when the pipe 901 is in the initial state, the part of the pipe 901 located in the first purification chamber 5 is set with a predetermined length, and the driving unit 902 can adopt an electric telescopic rod arranged outside the drum 3, and the pipe 901 is mobilized to move by the electric telescopic rod.

[0039] In one case of this embodiment, the effect of the pipe 901 being able to move has multiple aspects. When one end of the pipe 901 is located in the first purification chamber 5, materials can be added into the first purification chamber 5 through the pipe 901. Since the pipe 901 has a certain length inside, the silicon dioxide will not leak out of the pipe 901 even if the drum 3 rotates. Figure 5 As shown, when the pipe 901 moves to align with the annular filter plate 4, the pipe 901 can discharge the silicon dioxide in the first purification chamber 5, as shown in FIG. Figure 6 As shown, when the pipe 901 moves to align with the inner wall of the drum 3, the pipe 901 can discharge the silicon dioxide in the second purification chamber 6. The silicon dioxide in two different spaces can be discharged in turn through one pipe 901, and the effect is more obvious; Figure 7 As shown, a feeding pipe 16 for feeding materials is fixedly arranged on the top of the mounting frame 2. When the pipe fitting 901 and the adjusting screw 9021 are both in a vertical state and the driving disk 9022 is located at the bottom of the drum 3, the feeding pipe 16 is aligned with the pipe fitting 901, and one end of the pipe fitting 901 located outside the drum 3 is fixedly connected with a flaring pipe 20. At this time, the pipe fitting 901 rotates above the drum 3, and the feeding pipe 16 can directly feed the silicon dioxide to be purified into the pipe fitting 901, and the silicon dioxide will directly enter the first purification chamber 5.

[0040] like Figure 1 and Figure 4 As shown, as a preferred embodiment of the present invention, the driving unit 902 includes an adjusting screw 9021 rotatably arranged on the roller 3 on the side opposite to the pipe fitting 901, and the end of the adjusting screw 9021 located outside the roller 3 is fixedly connected to a driving disk 9022, a sleeve 9023 is fixedly arranged in the pipe fitting 901, and a discharge gap 9024 is arranged between the sleeve 9023 and the pipe fitting 901, and the pipe fitting 901 and the sleeve 9023 are fixedly connected by a plurality of cross bars 9025, and the sleeve 9023 is cooperatively sleeved on the adjusting screw 9021.

[0041] In one case of this embodiment, due to the characteristics of the silica particles themselves, it is difficult to get clogged, so the discharge gap 9024 is fully capable of discharging the material. This structure makes the weight distribution on both sides of the drum 3 more uniform. Different from the implementation form of the drive unit 902 mentioned above, this structure can make the drum 3 rotate more smoothly. The top of the mounting frame 2 is fixedly connected to the second drive member 17, and the output end of the second drive member 17 is fixedly provided with a drive wheel 18. When the pipe 901 and the adjusting screw 9021 are When the pipe 901 is in a vertical state and the driving disc 9022 is located at the top of the drum 3, the driving disc 9022 contacts the driving wheel 18, and the driving wheel 18 is located on one side of the driving disc 9022. Because the material can only be discharged when the pipe 901 is vertically oriented, the driving disc 9022 is at the top and contacts the driving wheel 18. The second driving member 17 works to realize the automatic lifting function of the pipe 901. The second driving member 17 can be an electric motor, or a hydraulic motor, as long as it can drive the adjusting screw 9021 to rotate. Figure 3 As shown, the pipe 901 needs to have a polygonal cross section so that the pipe 901 can only move as the adjusting screw 9021 rotates; the diameters of the connection between the roller 3 and the annular filter plate 4 and the pipe 901 are larger than the diameters of both sides of the roller 3. When the annular filter plate 4 and the roller 3 adopt this structure, the following is formed: Figure 8 The situation shown enables the silicon dioxide on both sides to automatically gather in the middle, making it easy to achieve complete discharge of the material.

[0042] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the base 1 is provided with a material receiving unit 19 located in the mounting frame 2.

[0043] In one case of the present embodiment, the material receiving unit 19 includes a transverse plate 1901, to which a vertically arranged material receiving pipe 1902 is fixedly connected. The material receiving pipe 1902 has the same size as the pipe fitting 901, and a slanted material guide pipe 1903 is fixedly connected to the top of the material receiving pipe 1902. Elastic telescopic rods 1904 are fixedly arranged on both sides of the material receiving pipe 1902 on the transverse plate 1901, and the other end of the elastic telescopic rods 1904 is fixedly connected to the base 1. Because the moving distance of the pipe fitting 901 is directly related to the space in which the pipe fitting 901 discharges the silicon dioxide, the material receiving pipe 1902 is processed to be arranged into an elastic lifting structure. The pipe fitting 901 will push the material receiving pipe 1902 to move downward during its downward movement, so it can be directly concluded whether the pipe fitting 901 is discharging the silicon dioxide in the first purification chamber 5 or the second purification chamber 6, thereby facilitating the discharge operation.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A precipitated silica production and purification device, comprising a base, to which a mounting frame is fixedly connected, characterized in that: Also includes: The drum is rotatably arranged in the mounting frame, an annular filter plate is fixedly connected in the drum, and the annular filter plate divides the inside of the drum into a first purification chamber and a second purification chamber, wherein the first purification chamber is located inside the second purification chamber; Both sides of the drum are fixedly connected with a tube shaft, which is rotatably connected to the mounting frame, and the mounting frame is also provided with a first driving member, which is used to drive the tube shaft on either side to rotate, and the tube shafts on both sides are connected to the first purification chamber, wherein the tube shaft on one side is used to transport high-temperature processing gas into the first purification chamber, and the tube shaft on the other side is used to discharge the processing gas in the drum; The material inlet and outlet structure is arranged on the drum and the annular filter plate, and is used to discharge the materials in the first purification chamber and the second purification chamber, or to put the materials into the first purification chamber; The material inlet and outlet structure includes a pipe fitting slidably arranged on a drum and an annular filter plate, the pipe fitting is arranged radially along the drum, and also includes a driving unit arranged on the drum, the driving unit is used to drive the pipe fitting to move along its own length direction, when the pipe fitting is in an initial state, the part of the pipe fitting located in the first purification chamber is set with a predetermined length.

2. The precipitated silica production and purification device according to claim 1, characterized in that: A fan and a heating box are fixedly connected to one side of the mounting frame, the fan and the heating box are communicated with each other through a first pipe, a second pipe is arranged at the output end of the heating box, the other end of the second pipe is located in a tube axis on one side and is arranged toward the first purification chamber, a delivery pipe connected to an external processing gas generating device is fixedly connected to one side of the heating box, and a discharge pipe is rotatably arranged in the tube axis on the other side.

3. The precipitated silica production and purification device according to claim 1, characterized in that: The driving unit includes an adjusting screw rotatably arranged on the side of the roller opposite to the pipe fitting, one end of the adjusting screw located outside the roller is fixedly connected to a driving disk, a sleeve is fixedly arranged inside the pipe fitting, a discharge gap is arranged between the sleeve and the pipe fitting, the pipe fitting and the sleeve are fixedly connected by a plurality of cross bars, and the sleeve is fitted on the adjusting screw.

4. The precipitated silica production and purification device according to claim 3, characterized in that: A second driving member is fixedly connected to the top of the mounting frame, and a driving wheel is fixedly provided at the output end of the second driving member. When the pipe and the adjusting screw are both in a vertical state and the driving disc is located on the top of the drum, the driving disc is in contact with the driving wheel, and the driving wheel is located on one side of the driving disc.

5. The precipitated silica production and purification device according to claim 3, characterized in that: The diameters of the drum and the annular filter plate at the connection with the pipe are larger than the diameters of the two sides thereof.

6. The precipitated silica production and purification device according to claim 1, characterized in that: A feeding pipe for feeding materials is fixedly arranged on the top of the mounting frame. When the pipe fitting and the adjusting screw are both in a vertical state and the driving disc is located at the bottom of the drum, the feeding pipe is aligned with the pipe fitting, and one end of the pipe fitting located outside the drum is fixedly connected with a flaring pipe.

7. The precipitated silica production and purification device according to claim 1, characterized in that: The base is provided with a material receiving unit located in the mounting frame.

8. The precipitated silica production and purification device according to claim 7, characterized in that: The material receiving unit includes a horizontal plate, to which a vertically arranged material receiving pipe is fixedly connected. The material receiving pipe has the same size as the pipe fitting, and a slanted material guiding pipe is fixedly connected to the top of the material receiving pipe. Elastic telescopic rods are fixedly arranged on both sides of the material receiving pipe on the horizontal plate, and the other end of the elastic telescopic rods is fixedly connected to the base.

Images