Mullite powder screen

Abstract

The utility model discloses a kind of mullite powdery screen, it is related to mullite processing technical field, including installation frame, the bottom of installation frame is equipped with filter module, the inside of installation frame is movably installed with driving stirring mechanism, the bottom of driving stirring mechanism and filter module are inlaid connection, the one side of installation frame output is fixedly installed with discharge module, the inside of discharge module and installation frame is connected communication.This technical scheme during application, it is through setting hand screw type installation screw rod and inner joint screw, side joint plate cooperation, and with the filter screen inlaid auger, so that during use can quickly disassemble filter screen, and auger can disperse material to avoid scab concentrated impact filter screen, and then reach the effect of reducing filter screen replacement time and breakage probability, solve the inconvenient filter screen replacement in prior art, easily broken and lead to inconvenient production and capital waste problem.

Description

Technical Field

[0001] This utility model belongs to the field of mullite processing technology, and specifically relates to a mullite powder screen. Background Technology

[0002] Mullite, a high-quality refractory raw material, is rare in its natural form and is usually obtained through artificial synthesis methods such as sintering or capacitive methods. It is a mineral formed from aluminosilicates at high temperatures and is the only stable binary solid solution under normal pressure in the Al₂O₃-SiO₂ system, with the chemical formula 3Al₂O₃-2SiO₂. Natural mullite crystals are slender needle-like and radially clustered, and it is widely used in the production of high-temperature refractory materials, often as a thermal barrier coating in C / C composites.

[0003] In the processing of mullite, the formed mullite powder needs to be screened and filtered beforehand. Most existing screens are of a single, integral structure. During sieving, excessively large mullite flocs can easily break the screen, rendering it unusable and requiring replacement. This not only inconveniences production but also results in excessive waste of production funds.

[0004] Chinese patent CN206184719U discloses a mullite powder sieve. The device includes a frame, a pressure frame, and a sieve. A retaining plate is provided on the bottom inner edge of the frame, and the pressure frame is fitted inside the frame. The sieve is pressed between the frame and the pressure frame, and corresponding fixing holes are provided around the perimeter of both the frame and the pressure frame, with fixing bolts fitted into these holes. Its structure is simple, convenient, and quick to use and replace, effectively improving work efficiency. However, in practical applications, the overall structure is relatively simple. During filtration, impurities filtered by the sieve remain on the top of the sieve, requiring regular cleaning. Failure to clean will lead to clogging of the sieve, indicating a lack of effective slag removal and discharge capabilities. Therefore, the device has certain defects and shortcomings in its overall application, necessitating design improvements. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a mullite powder screen to solve the problems raised in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A mullite powder screen includes an installation frame, a filter module installed at the bottom of the installation frame, a driving stirring mechanism movably installed inside the installation frame, the bottom of the driving stirring mechanism being fitted and connected to the filter module, and a discharge module fixedly installed on one side of the output end of the installation frame, the discharge module being connected to the interior of the installation frame.

[0008] The filter module includes a side plate and a filter screen. The side plate is fixedly installed on the bottom two sides and the front and rear ends of the mounting frame. The filter screen covers the bottom of the mounting frame. The front and rear ends of both sides of the filter screen are fixedly installed with internal threaded sleeves. The outer side of the side plate is threadedly connected to a mounting screw. The inner end of the mounting screw passes through the side plate and is threadedly connected to the internal threaded sleeve.

[0009] As a preferred technical solution, the mounting screw is a hand-tightening screw, the lower end of the mounting frame and the overall cross-sectional shape of the filter screen are arc-shaped, and the bottom of the driving stirring mechanism is in close contact with the inner wall of the filter screen.

[0010] As a preferred technical solution, mounting plates are fixedly installed at the four corners of the mounting frame, and mounting holes are provided on the outer side of the mounting plates. The mounting holes penetrate the mounting plates and are countersunk holes.

[0011] As a preferred technical solution, a support plate is fixedly installed on the top side of the mounting frame away from the discharge module, a feeding pipe is fixedly installed on the upper end of the support plate, and a feeding hopper is fixedly installed on the top of the feeding pipe.

[0012] As a preferred technical solution, the material discharge module includes a concave frame and a material discharge frame. The material discharge frame is fixedly installed on the lower end of the mounting frame away from the support plate. The concave frame is fixedly installed on the top side of the mounting frame away from the support plate. An electric push rod is fixedly installed in the middle of the top of the concave frame. A connecting rod is fixedly installed through the concave frame at the output end of the electric push rod. A cover baffle is fixedly installed at the bottom end of the connecting rod. The input end of the material discharge frame is connected to the bottom of the mounting frame. The cover baffle covers the output end of the material discharge frame.

[0013] As a preferred technical solution, both ends of the top of the covering baffle are fixedly installed with support rods, the top ends of the support rods penetrate the concave frame, and the support rods and the concave frame are slidably connected.

[0014] As a preferred technical solution, the driving stirring mechanism includes an auger and a mounting base. The mounting base is fixedly installed in the middle of the side of the mounting frame away from the discharge module. The auger is rotatably connected to the inside of the mounting frame. The outer surface of the auger is in close contact with the inner wall of the filter screen. A drive motor is fixedly installed on the outer side of the mounting base. The output end of the drive motor passes through the mounting base and is fixedly connected to one side of the auger.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during the application of this technical solution, by setting a hand-tightening installation screw in conjunction with an inner threaded sleeve and a side plate, as well as an auger that fits into the filter screen, the filter screen can be quickly disassembled and assembled during use. The auger can also disperse materials to prevent them from scabbing and concentrating on the filter screen, thereby reducing the filter screen replacement time and the probability of damage. This solves the problems of inconvenient filter screen replacement and easy damage in the existing technology, which leads to production inconvenience and waste of funds.

[0017] Secondly, during the application of this technical solution, by setting up a discharge module consisting of an auger and a filter screen, an electric push rod, a cover baffle, and a discharge frame, it is possible to prevent impurities from accumulating and clogging the filter screen during use, and to quickly discharge impurities, thereby reducing manual cleaning and improving slag discharge efficiency, and solving the problems of easy clogging of the filter screen and difficulty in slag discharge in the existing technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention near the material discharge module;

[0020] Figure 3 This is a bottom view structural diagram of this utility model;

[0021] Figure 4 This is a schematic diagram of the filter screen in its disassembled state according to this utility model.

[0022] Reference numerals: 1. Mounting frame; 2. Filter module; 21. Side plate; 22. Filter screen; 23. Internal threaded sleeve; 24. Mounting screw; 3. Drive stirring mechanism; 31. Screw; 32. Mounting base; 33. Drive motor; 4. Discharge module; 41. Concave frame; 42. Discharge frame; 43. Electric push rod; 44. Connecting rod; 45. Cover baffle; 46. Support rod; 5. Mounting plate; 6. Mounting hole; 7. Support plate; 8. Feeding pipe; 9. Feeding hopper. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 A mullite powder screen according to this embodiment includes an installation frame 1, a filter module 2 installed at the bottom of the installation frame 1, a driving stirring mechanism 3 movably installed inside the installation frame 1, the bottom of the driving stirring mechanism 3 and the filter module 2 being fitted and connected, and a discharge module 4 fixedly installed on one side of the output end of the installation frame 1, the discharge module 4 being connected to the inside of the installation frame 1.

[0025] The filter module 2 includes side plates 21 and a filter screen 22. The side plates 21 are fixedly installed on the bottom sides and front and rear ends of the mounting frame 1. The filter screen 22 covers the bottom of the mounting frame 1. Internal threaded sleeves 23 are fixedly installed on both sides and front and rear ends of the filter screen 22. A mounting screw 24 is threadedly connected to the outer side of the side plates 21. The inner end of the mounting screw 24 passes through the side plates 21 and is threadedly connected to the internal threaded sleeves 23. During application, the mounting frame 1 provides the mounting base for each component. The filter screen 22 in the filter module 2 covers the bottom of the mounting frame 1. Before use, the internal threaded sleeves 23 on both sides and front and rear ends of the filter screen 22 are aligned with the side plates 21 on both sides and front and rear ends of the mounting frame 1. Then, it is fixed by the mounting screw 24 on the outer side of the side plates 21. The inner end of the mounting screw 24 passes through the side plates 21 and is threadedly connected to the internal threaded sleeves 23, completing the installation of the filter screen 22. When performing screening operations, the driving stirring mechanism 3 is activated on the mounting frame 1. The internal mechanism 3, with its bottom closely connected to the filter module 2, drives the stirring mechanism 3 to agitate the mullite powder entering the mounting frame 1. Simultaneously, it pushes the material across the filter screen 22, allowing the compliant mullite powder to fall through the screen while impurities are trapped. During this process, the mounting screw 24 facilitates easy assembly and disassembly of the filter screen 22, enabling timely replacement when it is worn or damaged, reducing equipment downtime and solving the problem of inconvenient filter replacement in existing technologies. The close connection between the driving stirring mechanism 3 and the filter module 2 prevents impurity accumulation while agitating the material, improving filtration efficiency. It also disperses the material, preventing excessive sludge from concentrating and impacting the filter screen 22, reducing the probability of filter screen breakage and minimizing financial waste caused by frequent filter replacements. The discharge module 4, connected to the interior of the mounting frame 1, discharges the trapped impurities, further ensuring the continuous operation of the filtration process.

[0026] refer to Figures 1-2 and Figure 4The driving stirring mechanism 3 includes an auger 31 and a mounting base 32. The mounting base 32 is fixedly installed in the middle of the side of the mounting frame 1 away from the discharge module 4. The auger 31 is rotatably connected to the inside of the mounting frame 1, and the outer surface of the auger 31 is in close contact with the inner wall of the filter screen 22. A drive motor 33 is fixedly installed on the outside of the mounting base 32. The output end of the drive motor 33 passes through the mounting base 32 and is fixedly connected to one side of the auger 31. During the application of this device, the driving stirring mechanism 3 plays a key role in stirring and pushing materials during the screening process. The mounting base 32 provides a stable mounting foundation for the drive motor 33, ensuring that the drive motor 33 remains stable during operation. When screening is performed, the drive motor 33 starts, and the power generated by its output end is transmitted to the auger 31 through the part passing through the mounting base 32, driving the auger 31 within the mounting frame 1. As the auger 31 rotates, its outer surface adheres to the inner wall of the filter screen 22. During rotation, it not only thoroughly stirs the mullite powder entering the mounting frame 1, ensuring uniform material distribution, but also continuously propels the material along the surface of the filter screen 22. This stirring action prevents material from accumulating in a certain area, allowing more material to pass through the filter screen 22 and improving screening efficiency. The pushing action gradually pushes the impurities trapped by the filter screen 22 towards the discharge direction, preparing for subsequent slag discharge. At the same time, the close fit design between the auger 31 and the filter screen 22 reduces material residue in the gaps between them, lowering the possibility of impurities clogging the filter screen, extending the effective service life of the filter screen 22, and reducing the impact on production caused by cleaning or replacing the filter screen. This solves the problems of insufficient material stirring, low screening efficiency, and easy accumulation of impurities in the existing technology.

[0027] refer to Figures 1-2 and Figure 4The discharge module 4 includes a concave frame 41 and a discharge frame 42. The discharge frame 42 is fixedly installed on the lower end of the mounting frame 1 away from the support plate 7. The concave frame 41 is fixedly installed on the top side of the mounting frame 1 away from the support plate 7. An electric push rod 43 is fixedly installed in the middle of the top of the concave frame 41. A connecting rod 44 is fixedly installed through the concave frame 41 at the output end of the electric push rod 43. A cover baffle 45 is fixedly installed at the bottom end of the connecting rod 44. The input end of the discharge frame 42 and the inner bottom of the mounting frame 1 are connected. The parts are connected, and the cover baffle 45 covers the output end of the discharge frame 42. Support rods 46 are fixedly installed at both ends of the top of the cover baffle 45. The top of the support rods 46 penetrates the concave frame 41, and the support rods 46 and the concave frame 41 are slidably connected. During the application of this device, its discharge module 4 is responsible for discharging the intercepted impurities during the screening operation. When impurities gradually accumulate at the bottom of the mounting frame 1 during the filtration process, the discharge frame 42 serves as the channel for impurity discharge, and its input end is connected to the bottom of the mounting frame 1. It can receive trapped impurities. When slag discharge is required, the electric push rod 43 in the middle of the top of the concave frame 41 is activated. Its output end passes through the concave frame 41 and drives the connecting rod 44 to move, thereby causing the cover baffle 45 at the bottom of the connecting rod 44 to leave the output end of the discharge frame 42. At this time, impurities can be discharged through the discharge frame 42. During the movement of the cover baffle 45, the top ends of the supporting rods 46 at both ends of its top pass through the concave frame 41 and are slidably connected to the concave frame 41, which can provide stable guidance for the cover baffle 45 and prevent it from deviating during movement, ensuring accurate and reliable discharge action. After the slag discharge is completed, the electric push rod 43 drives the cover baffle 45 to reset and cover the output end of the discharge frame 42 again, preventing the material to be screened from leaking out of the discharge frame 42. This structural design eliminates the need for manual intervention in the slag discharge process, reduces the intensity of manual labor, and the slag discharge action is fast and efficient. It avoids filter screen blockage caused by impurity accumulation, ensures the continuity of screening operation, and solves the problem of inconvenient slag discharge affecting filtration efficiency in the prior art.

[0028] refer to Figures 3-4The mounting screw 24 is a hand-tightening screw. The lower end of the mounting frame 1 and the overall cross-sectional shape of the filter screen 22 are arc-shaped. The bottom of the driving stirring mechanism 3 is fitted to the inner wall of the filter screen 22. Mounting plates 5 are fixedly installed at the four corners of the mounting frame 1. Mounting holes 6 are opened on the outer side of the mounting plates 5, and the mounting holes 6 penetrate the mounting plates 5. The mounting holes 6 are countersunk holes. A support plate 7 is fixedly installed on the top of the mounting frame 1 on the side away from the discharge module 4. The upper end of the support plate 7 is fixedly installed with... The device is equipped with a feeding pipe 8, and a feeding hopper 9 is fixedly installed on the top of the feeding pipe 8. During the application of this device, it is fixed through the mounting holes 6 on the mounting plates 5 at the four corners of the mounting frame 1. The mounting holes 6 are countersunk holes, which can enhance the installation stability and prevent the equipment from shifting during the screening process. Before use, the filter screen 22 is placed over the bottom of the mounting frame 1. The lower end of the mounting frame 1 and the overall cross-section of the filter screen 22 are arc-shaped to adapt to the material flow trajectory. The filter screen 22 is fixed through the hand-tight mounting screws 24 on the outside of the side plate 21. The filter screen 22 can be operated without tools. The inner end of the mounting screw 24 passes through the side connecting plate 21 and connects to the inner threaded sleeve 23 of the filter screen 22 to complete the installation. During operation, the mullite powder to be screened is added through the feeding hopper 9 and conveyed to the inside of the mounting frame 1 through the feeding pipe 8. The support plate 7 stabilizes the fixed feeding pipe 8. The driving stirring mechanism 3 moves inside the mounting frame 1, and its bottom is in close contact with the inner wall of the filter screen 22. Under the driving action, the material is stirred and pushed along the surface of the arc-shaped filter screen 22, so that the mullite powder that meets the specifications falls through the filter screen 22 and impurities are intercepted. The hand-tightening mounting screw 24 makes it easier to install and remove the filter screen 22 and reduces replacement time. The arc-shaped cross-section design accelerates the material flow and improves screening efficiency. The countersunk hole enhances the installation firmness of the equipment and reduces the impact of vibration. The close fit between the driving stirring mechanism 3 and the filter screen 22 reduces the accumulation of impurities and reduces the probability of filter screen damage, solving the problems of inconvenient replacement and low efficiency in the existing technology.

[0029] Operating principle and advantages: During application, the equipment is first installed and fixed. The equipment is fixed in the designated working position by using the mounting plates 5 at the four corners of the mounting frame 1 and the mounting holes 6 on the mounting plates 5. The mounting holes 6 are countersunk holes, which can enhance the stability of the installation and ensure that the equipment will not be displaced due to vibration during the screening process, thereby ensuring stable screening effect. Next, the filter screen 22 is installed. The filter screen 22 is covered on the bottom of the mounting frame 1, and the inner threaded sleeves 23 at both ends of the filter screen 22 are aligned with the side plates 21 at both ends of the bottom of the mounting frame 1. Then, the mounting screws 24 on the outside of the side plates 21 are turned. The mounting screws 24 are hand-tight screws, which can be operated without the aid of tools. After passing through the side plates 21 at the inner end, they are threaded to the inner threaded sleeves 23, thus completing the fixing of the filter screen 22. The lower end of the mounting frame 1 and the overall cross-section of the filter screen 22 are arc-shaped. This design can adapt to the natural flow trajectory of the material and facilitate the smooth movement of the material on the filter screen 22.

[0030] After installation, add materials by pouring the mullite powder to be screened into the feeding hopper 9 at the top of the feeding pipe 8. The material will then be guided through the feeding pipe 8 to the side of the mounting frame 1 away from the discharge module 4. The screening and mixing stage then begins. Start the drive motor 33 in the drive mixing mechanism 3. The drive motor 33 is fixed to the outside of the mounting base 32, which is fixed to the middle of the side of the mounting frame 1 away from the discharge module 4, providing stable support for the drive motor 33. The output end of the drive motor 33 passes through the mounting base 32 and is fixed to one side of the auger 31. The connection is fixed, which drives the auger 31 to rotate inside the mounting frame 1. The outer surface of the auger 31 is in contact with the inner wall of the filter screen 22. During rotation, the mullite powder is fully stirred, and the material is continuously moved on the surface of the filter screen 22. This allows the mullite powder that meets the specifications to fall through the filter screen 22, while impurities such as scabs are trapped by the filter screen 22. During use, the drive motor 33 can be started to rotate in both directions, which drives the auger 31 to drive the material to be filtered to tumble back and forth, which can further improve its filtration efficiency. After filtration is completed... Afterwards, the final slag discharge operation is performed. When it is necessary to discharge the retained impurities, the electric push rod 43 at the top of the concave frame 41 in the discharge module 4 is controlled. The output end of the electric push rod 43 passes through the concave frame 41 and is fixedly connected to the connecting rod 44. The extension and retraction of the electric push rod 43 can drive the connecting rod 44 to move up and down. The bottom end of the connecting rod 44 is fixedly connected to the cover baffle 45, thereby driving the cover baffle 45 to move synchronously, so that the cover baffle 45 leaves the output end of the discharge frame 42. Both ends of the top of the cover baffle 45 are fixed with support rods 46, and the top of the support rods 46... The concave frame 41 is slidably connected to the concave frame 41, which can enhance the stability of the cover baffle 45 when it moves and prevent it from shifting. At this time, under the continuous push of the auger 31, the impurities are discharged through the discharge frame 42. The discharge frame 42 is fixed to the lower end of the side of the mounting frame 1 away from the support plate 7 and its input end is connected to the bottom of the mounting frame 1, which can ensure that the impurities are discharged smoothly. After the slag is discharged, the electric push rod 43 retracts, drives the cover baffle 45 to reset, and covers the output end of the discharge frame 42 again to prevent the material from leaking out of the discharge frame 42 during the subsequent screening process.

[0031] By setting up a mating structure between the mounting screw 24, the inner threaded sleeve 23, and the side plate 21, and by adopting a hand-tightening design for the mounting screw 24, the filter screen 22 can be quickly disassembled and installed without tools during use. Compared with existing integrated screens, this significantly shortens the replacement time, thereby reducing the impact of filter screen replacement on production and solving the problem of inconvenient filter screen replacement in existing technologies. Simultaneously, by setting up an auger 31 to drive the stirring mechanism 3, it adheres to the inner wall of the filter screen 22 during rotation, stirring and moving the material. This disperses the material during use, preventing excessive sludge from concentrating and impacting the filter screen 22, thus reducing the probability of the filter screen breaking and minimizing the financial waste caused by frequent filter screen replacements. This solves the problem of easily damaged filter screens. The mating structure between the auger 31 and the filter screen 22 allows the auger 31 to continuously move the material on the filter screen 22 during use, preventing impurities from accumulating on the surface of the filter screen 22, thereby effectively reducing the burden on the filter screen. To address the blockage issue, the electric push rod 43 of the discharge module 4, along with the coordinated structure of the cover baffle 45 and discharge frame 42, allows the electric push rod 43 to control the opening and closing of the cover baffle 45 during use. This, combined with the pushing action of the auger 31, quickly discharges impurities, achieving a better slag removal function. This eliminates the need for frequent manual cleaning, solving the slag removal difficulties inherent in existing technologies. The arc-shaped cross-section of the mounting frame 1 and filter screen 22 allows materials to flow naturally along the arc surface during use, accelerating the material screening speed in conjunction with the pushing action of the auger 31. The drive motor 33 provides stable power, ensuring the auger 31 operates continuously and efficiently, thus improving overall screening efficiency. The mounting holes 6 on the mounting plate 5 are countersunk, making the equipment installation more secure and reducing vibration during operation. The sliding connection between the support rod 46 and the concave frame 41 ensures smoother movement of the cover baffle 45 during use, guaranteeing reliable discharge and improving equipment stability.

[0032] During the application of this device, the length of its mounting frame 1 is 800-1200mm, the width is 500-800mm, and the height is 300-500mm; the mesh diameter of the filter screen 22 is 0.1-2mm, and the thickness is 1-3mm; the length of the mounting screw 24 is 50-80mm, and the diameter is 8-12mm; the diameter of the auger 31 is 100-200mm, and the length is 600-1000mm; the power of the drive motor 33 is 0.75-2.2kW, and the rated speed is 1400-2800r / min; the thrust of the electric push rod 43 is 500-2000N, and the stroke is 100-300mm; the support rod 46 is straight. The diameter is 10-16mm and the length is 200-400mm; the hopper 9 has a volume of 50-200L and the feeding pipe 8 has a diameter of 50-100mm. Among the electronic components, the drive motor 33 is a three-phase asynchronous motor, model Y; the electric push rod 43 is a DC electric push rod 43, model DT, which is powered by DC 24V and is connected to the controller through wires; the controller is a PLC controller, model S7-200SMART, which is installed on the mounting base 32 on the side of the mounting frame 1 away from the discharge module 4, and is connected to the drive motor 33 and the electric push rod 43 through wires to realize the control of both.

[0033] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

Claims

1. A mullite powder sieve, characterized in that: The system includes a mounting frame (1), a filter module (2) is mounted on the bottom of the mounting frame (1), a driving stirring mechanism (3) is movably mounted inside the mounting frame (1), the bottom of the driving stirring mechanism (3) is fitted and connected to the filter module (2), and a discharge module (4) is fixedly mounted on one side of the output end of the mounting frame (1), and the discharge module (4) is connected to the inside of the mounting frame (1). The filter module (2) includes a side plate (21) and a filter screen (22). The side plate (21) is fixedly installed on the bottom two sides and the front and rear ends of the mounting frame (1). The filter screen (22) covers the bottom of the mounting frame (1). The front and rear ends of both sides of the filter screen (22) are fixedly installed with internal threaded sleeves (23). The outer side of the side plate (21) is threadedly connected to a mounting screw (24). The inner end of the mounting screw (24) passes through the side plate (21) and the internal threaded sleeve (23) and is threadedly connected.

2. The mullite powder sieve according to claim 1, characterized in that: The mounting screw (24) is a hand-tightening screw. The lower end of the mounting frame (1) and the overall cross-sectional shape of the filter screen (22) are arc-shaped. The bottom of the driving stirring mechanism (3) is attached to the inner wall of the filter screen (22).

3. The mullite powder sieve according to claim 1, characterized in that: Mounting plates (5) are fixedly installed at the four corners of the mounting frame (1). Mounting holes (6) are provided on the outer side of the mounting plates (5). The mounting holes (6) penetrate the mounting plates (5) and are countersunk holes.

4. The mullite powder sieve according to claim 1, characterized in that: A support plate (7) is fixedly installed on the top side of the mounting frame (1) away from the discharge module (4). A feeding pipe (8) is fixedly installed on the upper end of the support plate (7), and a feeding hopper (9) is fixedly installed on the top of the feeding pipe (8).

5. A mullite powder sieve according to claim 4, characterized in that: The material discharge module (4) includes a concave frame (41) and a material discharge frame (42). The material discharge frame (42) is fixedly installed on the lower end of the side of the mounting frame (1) away from the support plate (7). The concave frame (41) is fixedly installed on the top side of the mounting frame (1) away from the support plate (7). An electric push rod (43) is fixedly installed in the middle of the top of the concave frame (41). A connecting rod (44) is fixedly installed through the concave frame (41) at the output end of the electric push rod (43). A cover baffle (45) is fixedly installed at the bottom end of the connecting rod (44). The input end of the material discharge frame (42) is connected to the bottom of the mounting frame (1). The cover baffle (45) covers the output end of the material discharge frame (42).

6. A mullite powder sieve according to claim 5, characterized in that: The top two ends of the cover baffle (45) are fixedly installed with support rods (46), the top of the support rods (46) penetrates the concave frame (41), and the support rods (46) and the concave frame (41) are slidably connected.

7. A mullite powder sieve according to claim 1, characterized in that: The driving stirring mechanism (3) includes an auger (31) and a mounting base (32). The mounting base (32) is fixedly installed on the middle part of the side of the mounting frame (1) away from the discharge module (4). The auger (31) is rotatably connected to the inside of the mounting frame (1). The outer surface of the auger (31) is in close contact with the inner wall of the filter screen (22). A drive motor (33) is fixedly installed on the outside of the mounting base (32). The output end of the drive motor (33) passes through the mounting base (32) and is fixedly connected to one side of the auger (31).

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