A high dispersion silica drying device

Abstract

The application provides a high-dispersion silica drying device, and relates to the technical field of silica production. The device comprises a drying box, a feeding hopper arranged on the top of the drying box, a bulk material assembly and a discharge hopper arranged in the drying box from top to bottom, a discharge opening of the discharge hopper extending to outside of the drying box, a heating cavity arranged between the discharge hopper and the inner wall of the drying box, an air inlet pipe and an air outlet pipe communicated with the heating cavity, and an exhaust pipe arranged on the top of the drying box. The bulk material assembly comprises a bulk material cone and a plurality of connecting rods. The bulk material cone is arranged directly below the feeding hopper and connected to the inner top wall of the drying box through the connecting rods. The bulk material cone is used for preliminarily dispersing the silica filter cake. The dispersed silica rolls down along the inner wall of the discharge hopper. Meanwhile, the heating medium enters the heating cavity between the discharge hopper and the inner wall of the drying box through the air inlet pipe, heats the dispersed material in the discharge hopper through heat conduction, promotes water vaporization, disperses and heats the silica filter cake, improves the drying efficiency, and improves the production efficiency.

Description

Technical Field

[0001] This application relates to the field of silica production technology, and more specifically, to a high-dispersion silica drying apparatus. Background Technology

[0002] Highly dispersed silica is a key raw material in rubber reinforcement and composite material filling. Its preparation process typically includes core steps such as precipitation reaction, filtration and washing, and drying and molding. The silica filter cake obtained after filtration has a high moisture content (usually 60%-85%), requiring drying treatment.

[0003] Existing drying equipment typically places the filter cake to be dried in a material box and removes moisture by blowing hot air from top to bottom or horizontally across the surface of the filter cake. However, the lack of a targeted material dispersion structure within the drying equipment results in low drying efficiency for the silica filter cake, impacting production efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a highly dispersed silica drying device that can solve the technical problems raised in the background art.

[0005] This application provides a high-dispersion silica drying device, including a drying box. The top of the drying box is provided with a feeding hopper. The drying box is provided with a material dispersing assembly and a discharge hopper from top to bottom. The discharge port of the discharge hopper extends to the outside of the drying box. A heating chamber is provided between the discharge hopper and the inner wall of the drying box. The heating chamber is connected to an air inlet pipe and an air outlet pipe. An exhaust pipe is provided at the top of the drying box.

[0006] The bulk material assembly includes a bulk material cone and multiple connecting rods. The bulk material cone is located directly below the feed hopper and is connected to the inner top wall of the drying chamber via the multiple connecting rods.

[0007] Furthermore, multiple connecting rods are evenly arranged on the upper part of the bulk material cone, and the side of the connecting rod that contacts the material is cone-shaped.

[0008] Furthermore, the bulk material cone is composed of an upper cone portion and a lower frustum portion. The frustum portion is inverted and disposed at the bottom of the cone portion and is integrally formed with the cone portion. The cone portion and the frustum portion form an air jet chamber. Multiple air jet holes are evenly provided around the periphery of the frustum portion. A connecting pipe communicating with the air jet chamber is provided on one side of the bulk material cone. The end of the connecting pipe away from the bulk material cone extends to the outside of the drying chamber.

[0009] Furthermore, the jet direction of the jet orifice is directed towards the inner wall of the discharge hopper.

[0010] Furthermore, the outer end of the connecting pipe is connected to the air outlet pipe via a pipe connector.

[0011] Furthermore, the feed hopper is provided with a feed valve at the discharge port, the discharge hopper is provided with a discharge valve at the discharge port, the air inlet pipe is provided with an air inlet valve, and the exhaust pipe is provided with an exhaust valve.

[0012] Furthermore, it also includes a stirring assembly located between the bulk material assembly and the discharge hopper. The bulk material assembly includes a stirring motor, a stirring shaft, and multiple stirring rods. The stirring motor is fixed to the bottom of the truncated cone portion, the upper end of the stirring shaft is connected to the output shaft of the stirring motor, and the multiple stirring rods are evenly arranged on the stirring shaft.

[0013] Furthermore, a scraper is fixed to the end of the stirring rod, and the scraper abuts against the inner wall of the discharge hopper.

[0014] Furthermore, a dust cover is provided at the bottom of the cone-shaped part, the stirring motor is installed inside the dust cover, the upper end of the stirring shaft movably passes through the dust cover and is connected to the output shaft of the stirring motor, and a sealing ring is provided between the stirring shaft and the dust cover.

[0015] The beneficial effects of this utility model are:

[0016] This invention uses a dispersing cone to initially disperse the silica filter cake. The dispersed silica rolls down the inner wall of the discharge hopper. Simultaneously, a heating medium enters the heating chamber between the discharge hopper and the inner wall of the drying chamber through the air inlet pipe. The dispersed material in the discharge hopper is heated through heat conduction, causing moisture to vaporize. The generated humid vapor is discharged through the exhaust pipe at the top of the drying chamber. The dried material is finally discharged through the discharge port of the discharge hopper. Compared with the prior art, this invention disperses and heats the silica filter cake, effectively increasing the contact area between the material and heat, thereby improving drying efficiency and production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the bulk material assembly and the mixing assembly in some embodiments of this application;

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Drying oven; 2. Feed hopper; 3. Bulk material assembly; 31. Bulk material cone; 311. Cone section; 312. Frustum section; 32. Connecting rod; 4. Discharge hopper; 5. Heating chamber; 6. Air inlet pipe; 7. Air outlet pipe; 8. Exhaust pipe; 9. Jet chamber; 10. Jet nozzle; 11. Connecting pipe; 12. Pipe connector; 13. Feed valve; 14. Discharge valve; 15. Air inlet valve; 16. Exhaust valve; 17. Mixing assembly; 171. Mixing motor; 172. Mixing shaft; 173. Mixing rod; 18. Scraper rod; 19. Dust cover. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0028] Example 1:

[0029] like Figure 1 and Figure 2 As shown, this application provides a high-dispersion silica drying device, including a drying chamber 1, which is cylindrical. A feed hopper 2 is located at the top of the drying chamber 1. Inside the drying chamber 1, from top to bottom, a material dispersing assembly 3 and a discharge hopper 4 are arranged. The discharge port of the discharge hopper 4 extends outside the drying chamber 1. A heating chamber 5 is provided between the discharge hopper 4 and the inner wall of the drying chamber 1. The heating chamber 5 is connected to an air inlet pipe 6 and an air outlet pipe 7. An exhaust pipe 8 is located at the top of the drying chamber 1. The material dispersing assembly 3 includes a material dispersing cone 31 and multiple connecting rods 32. The material dispersing cone 31 is located directly below the feed hopper 2 and is connected to the inner top wall of the drying chamber 1 via the multiple connecting rods 32. During operation... The silica filter cake to be dried enters the drying chamber 1 through the feed hopper 2. The silica filter cake is initially dispersed by the dispersing cone 31. The dispersed silica rolls down the inner wall of the discharge hopper 4. At the same time, the heating medium enters the heating chamber 5 between the discharge hopper 4 and the inner wall of the drying chamber 1 through the air inlet pipe 6. The dispersed material in the discharge hopper 4 is heated by heat conduction, which promotes the vaporization of moisture. The generated humid vapor is discharged through the exhaust pipe 8 at the top of the drying chamber 1. The dried material is finally discharged through the discharge port of the discharge hopper 4. Compared with the existing technology, the silica filter cake is dispersed and heated, which effectively increases the contact area between the material and the heat, thereby improving the drying efficiency and increasing the production efficiency.

[0030] like Figure 1 and Figure 2As shown, multiple connecting rods 32 are evenly arranged on the upper part of the material dispersing cone 31, and the side of the connecting rod 32 that contacts the material is set into a cone shape. Specifically, one end of the connecting rod 32 is fixedly connected to the upper part of the material dispersing cone 31, and the other end of the connecting rod 32 is fixedly connected to the inner top wall of the drying chamber 1. When the silica filter cake falls from the feed hopper 2 to the material dispersing cone 31, the filter cake first contacts and collides with the cone part 311 of the material dispersing cone 31, and then rolls down along the cone surface of the material dispersing cone 31. It is then cut and diverted by the cone surface of the connecting rod 32, so that the filter cake is dispersed and diverted during the falling process, and then rolls down along the inner wall of the discharge hopper 4, thereby improving the material dispersion effect.

[0031] like Figure 1 and Figure 2 As shown, the bulk material cone 31 consists of an upper cone portion 311 and a lower frustum portion 312. The frustum portion 312 is inverted and integrally formed with the cone portion 311 at its bottom. The cone portion 311 and the frustum portion 312 form an air jet chamber 9. Multiple air jet holes 10 are evenly distributed around the periphery of the frustum portion 312. A connecting pipe 11 communicating with the air jet chamber 9 is provided on one side of the bulk material cone 31. The end of the connecting pipe 11 away from the bulk material cone 31 extends to the outside of the drying chamber 1. After the connecting pipe 11 is connected to a hot air source, the hot air passes through... Connecting pipe 11 leads into jet chamber 9, and then jets outwards through jet holes 10. When the silica filter cake falls onto the dispersing cone 31, it is dispersed by the cone 311, and the hot air jet simultaneously heats the silica during the dispersion process. At the same time, the airflow impact further breaks up the agglomerated particles, which not only further improves the drying efficiency, but also effectively breaks up the agglomeration of silica filter cake and ensures product dispersibility. Meanwhile, the exhaust pipe 8 is connected to an external dust collector to treat the dust-laden and humid gas discharged from the exhaust pipe 8.

[0032] like Figure 1 As shown, the jet direction of the jet hole 10 is pointed towards the inner wall of the discharge hopper 4; this allows the heat medium to act directly on the material rolling path, improving heat exchange efficiency.

[0033] Example 2:

[0034] like Figure 1 As shown, compared with Embodiment 1, in this embodiment, the outer end of the connecting pipe 11 is connected to the air outlet pipe 7 through the pipe connector 12; the hot air in the air outlet pipe 7 can enter the connecting pipe 11 through this connection passage, and then be introduced into the jet chamber 9 of the material distribution cone 31, and finally sprayed out from the jet hole 10; the heat conduction heating method of the heating chamber 5 and the direct jet blowing heating method of the jet hole 10 are connected through this connection passage, so that the heat energy can be used in stages, improving the heat energy utilization efficiency and saving energy.

[0035] like Figure 1As shown, a feed valve 13 is provided at the discharge port of the feed hopper 2, a discharge valve 14 is provided at the discharge port of the discharge hopper 4, an air inlet valve 15 is provided on the air inlet pipe 6, and an exhaust valve 16 is provided on the exhaust pipe 8. The feed valve 13 is used to control the amount and timing of the silica filter cake entering the drying chamber 1, the discharge valve 14 regulates the discharge rhythm of the dried material, the air inlet valve 15 regulates the flow rate and speed of the hot medium entering the heating chamber 5, and the exhaust valve 16 controls the discharge speed of the humid vapor and the air pressure inside the drying chamber 1 during the drying process. By coordinating the opening and closing of the four valves and adjusting their opening degree, the orderly linkage of material feeding, hot medium supply, humid vapor discharge and material discharge can be achieved, matching the different stages of the drying process.

[0036] Example 3:

[0037] like Figure 1 and Figure 2 As shown, the highly dispersed silica drying device of this application also includes a stirring assembly 17, which is located between the bulk material assembly 3 and the discharge hopper 4. The bulk material assembly 3 includes a stirring motor 171, a stirring shaft 172, and multiple stirring rods 173. The stirring motor 171 is fixed to the bottom of the conical part 312, and the upper end of the stirring shaft 172 is connected to the output shaft of the stirring motor 171. The multiple stirring rods 173 are evenly arranged on the stirring shaft 172. When the stirring assembly 17 is working, the stirring motor 171 drives the stirring shaft 172 to rotate, which drives the stirring rods 173 to rotate synchronously. The silica material, which has been initially dispersed by the bulk material assembly 3, falls into the discharge hopper 4. The rotating stirring rods 173 perform secondary stirring and dispersing of the material. Combined with the heat conduction heating of the heating chamber 5 and the hot airflow of the jet hole 10, the drying efficiency is further improved.

[0038] like Figure 1 and Figure 2 As shown, a scraper 18 is fixedly provided at the end of the stirring rod 173, and the scraper 18 abuts against the inner wall of the discharge hopper 4. When the stirring motor 171 drives the stirring shaft 172 to rotate, the scraper 18 at the end of the stirring rod 173 rotates synchronously with the stirring shaft 172. During the rotation, it can continuously scrape the inner wall of the discharge hopper 4, which can remove the material adhering to the wall surface in real time, avoid material clumping and residue, and reduce material waste.

[0039] like Figure 1 As shown, a dust cover 19 is provided at the bottom of the conical part 312. The stirring motor 171 is installed inside the dust cover 19. The upper end of the stirring shaft 172 is movably connected to the output shaft of the stirring motor 171 through the dust cover 19. A sealing ring is provided between the stirring shaft 172 and the dust cover 19. The combination design of the dust cover 19 and the sealing ring can effectively isolate the material and dust in the drying process, prevent them from entering the stirring motor 171 and causing component wear, short circuit and other faults, and extend the service life of the motor.

[0040] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-dispersion silica drying device, characterized in that: The equipment includes a drying chamber, a feeding hopper at the top of the drying chamber, a material dispensing assembly and a discharge hopper arranged from top to bottom inside the drying chamber, the discharge port of the discharge hopper extending to the outside of the drying chamber, a heating chamber between the discharge hopper and the inner wall of the drying chamber, the heating chamber being connected to an air inlet pipe and an air outlet pipe, and an exhaust pipe at the top of the drying chamber. The bulk material assembly includes a bulk material cone and multiple connecting rods. The bulk material cone is located directly below the feed hopper and is connected to the inner top wall of the drying chamber via the multiple connecting rods.

2. The highly dispersed silica drying apparatus according to claim 1, characterized in that: Multiple connecting rods are evenly arranged on the upper part of the bulk material cone, and the side of the connecting rod that contacts the material is cone-shaped.

3. The highly dispersed silica drying device according to claim 2, characterized in that: The bulk material cone consists of an upper cone and a lower frustum. The frustum is inverted and integrally formed with the cone at the bottom of the cone. The cone and the frustum form an air jet chamber. Multiple air jet holes are evenly distributed around the frustum. A connecting pipe communicating with the air jet chamber is provided on one side of the bulk material cone. The end of the connecting pipe away from the bulk material cone extends to the outside of the drying chamber.

4. The highly dispersed silica drying apparatus according to claim 3, characterized in that: The jet nozzle directs the jet towards the inner wall of the discharge hopper.

5. The highly dispersed silica drying apparatus according to claim 3, characterized in that: The outer end of the connecting pipe is connected to the air outlet pipe via a pipe connector.

6. The highly dispersed silica drying apparatus according to claim 1, characterized in that: The feed hopper is equipped with a feed valve at its discharge port, the discharge hopper is equipped with a discharge valve at its discharge port, the air inlet pipe is equipped with an air inlet valve, and the exhaust pipe is equipped with an exhaust valve.

7. The highly dispersed silica drying apparatus according to claim 3, characterized in that: It also includes a stirring assembly located between the bulk material assembly and the discharge hopper. The bulk material assembly includes a stirring motor, a stirring shaft, and multiple stirring rods. The stirring motor is fixed to the bottom of the truncated cone portion, the upper end of the stirring shaft is connected to the output shaft of the stirring motor, and the multiple stirring rods are evenly arranged on the stirring shaft.

8. The highly dispersed silica drying apparatus according to claim 7, characterized in that: A scraper is fixed to the end of the stirring rod, and the scraper abuts against the inner wall of the discharge hopper.

9. The highly dispersed silica drying apparatus according to claim 7, characterized in that: The bottom of the cone-shaped part is provided with a dust cover, the stirring motor is installed inside the dust cover, the upper end of the stirring shaft movably passes through the dust cover and is connected to the output shaft of the stirring motor, and a sealing ring is provided between the stirring shaft and the dust cover.

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