Efficient powder conveying system for refractory material production
By using a belt conveyor and a dispersing mechanism inside a sealed chamber, combined with the injection of dry gas and mechanical agitation, the problems of dust and agglomeration during the conveying of refractory powder are solved, achieving environmentally friendly and efficient powder conveying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN ZHUYUAN REFRACTORY MATERIALS CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional refractory powder conveying processes suffer from dust pollution, powder agglomeration due to moisture, and the high cost and loosening of agglomeration crushing equipment.
The sealed conveyor and dispersing mechanism in the sealed chamber, combined with the injection of dry gas and mechanical agitation, achieve sealed conveying of powder and prevention of agglomeration.
It effectively prevents the spread of powder dust, avoids clumping, improves conveying efficiency, and reduces equipment maintenance frequency and costs.
Smart Images
Figure CN224147252U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of powder conveying equipment for refractory material production, and specifically relates to an efficient powder conveying system for refractory material production. Background Technique
[0002] Refractory materials are a class of inorganic non-metallic materials that can withstand a high temperature of not less than 1580 °C and maintain their physical and chemical stability. They are widely used in the inner linings of high-temperature equipment in industries such as metallurgy, building materials, chemical engineering, and electric power. According to the performance requirements, production process characteristics, and usage conditions of refractory materials, refractory material products are all processed from powders after crushing refractory raw materials.
[0003] In the traditional refractory powder conveying process, it mainly relies on manual handling or conveyor belt conveying, and often has the following problems: First, most use an open conveying structure. Since the refractory materials are light in weight, a large amount of dust is easily generated during the powder loading, unloading, and conveying processes, resulting in an excessive dust level in the workshop, affecting the workshop environment, not meeting environmental protection production, and at the same time, external impurities are also easily fallen into the powder, and subsequent separation is required, reducing production efficiency; Second, refractory powders are greatly affected by air humidity and are easily damp and agglomerated during the conveying process, affecting subsequent use; Third, although some enterprises have set up agglomerate crushing mechanisms for agglomerates, most of these crushing mechanisms are vibration mechanisms with relatively high costs, and are prone to problems such as installation loosening or even disconnection of the installation connection during long-term use, and the powder agglomerates can be broken by just slightly shaking, and there is no need to use equipment with too high costs for crushing. Therefore, it is objectively necessary to develop an efficient powder conveying system for refractory material production that does not pollute the environment, can effectively break agglomerates, and is easy to use. Content of the Utility Model
[0004] The purpose of the utility model is to provide an efficient powder conveying system for refractory material production that does not pollute the environment, can effectively break agglomerates, and is easy to use.
[0005] The purpose of the utility model is achieved as follows. It includes a sealed bin and a belt conveyor arranged inside the sealed bin. An inlet pipe is inclined and arranged in the sealed bin above the feeding end of the belt conveyor. The higher end of the inlet pipe extends out of the outside of the sealed bin. An outlet is arranged at the bottom of the sealed bin below the discharging end of the belt conveyor. A plurality of dispersing mechanisms are evenly spaced along the conveying direction above the belt conveyor. The dispersing mechanism includes a hollow shaft and a number of dispersing thin pipes. The dispersing thin pipes are communicated with the cavity inside the hollow shaft. The dispersing thin pipes are evenly arranged along the axial direction of the hollow shaft. One end of the hollow shaft extends out of the sealed bin and is drivingly connected with a driving device, and the other end extends out of the sealed bin and is sealingly and rotationally connected with a ventilation pipe.
[0006] Furthermore, a hot gas inlet is provided on the sealed bin near the discharge end of the belt conveyor, and a hot gas outlet is provided at the top of the sealed bin near the feed end of the belt conveyor. The hot gas outlet is sequentially connected to a dust collector and a gas heater through pipelines. The end of the dust discharge pipe of the dust collector extends into the sealed bin and is located above the belt conveyor. The gas outlet of the gas heater is connected to the hot gas inlet.
[0007] Furthermore, the gas outlet of the gas heater is connected to a ventilation pipe through a pipeline.
[0008] Furthermore, a baffle plate is provided at the bottom of the sealed bin near the discharge port. A brush is provided at the upper end of the baffle plate, and the bristles of the brush contact the lower belt of the belt conveyor.
[0009] Furthermore, a leveling plate is inclined above the belt conveyor and is located near the feed pipe. A screw rod is rotatably provided on the leveling plate. The upper end of the screw rod extends out of the sealed bin and is provided with a handle. The screw rod is threadedly connected to the sealed bin.
[0010] Furthermore, a dust blocking arc plate is provided in the sealed bin above each dispersing mechanism.
[0011] Furthermore, a material turning mechanism is provided between every two adjacent dispersing mechanisms. The material turning mechanism includes a rotating shaft and a material turning plate provided on the rotating shaft.
[0012] Furthermore, a number of thin rods are provided on the dispersing thin pipe.
[0013] In operation, this invention first starts the belt conveyor and drive unit. The conveyor belt of the belt conveyor begins to run, and the drive unit drives the hollow shaft to rotate. The hollow shaft drives the dispersing tubes to rotate, and at the same time, dry gas is supplied to the hollow shaft through the vent pipe. The gas can be air or other dry gases that do not react with the powder. These dry gases are sprayed out from the ends of each dispersing tube, completing the preparation work. The refractory powder for production is added to the sealed bin through the feed pipe and falls onto the conveyor belt of the belt conveyor. Driven by the conveyor belt, it is transported forward. During the transport process, each dispersing mechanism performs a dispersing operation on the powder. The dispersing principle is as follows: On the one hand, the rotating dispersing tubes agitate the powder through mechanical dispersing. The agitation method breaks up any clumps of powder. Meanwhile, dry gas is ejected from the end of the dispersing tube, serving three purposes: first, it effectively controls the airflow pressure, directly blowing away any clumps; second, when the end of the dispersing tube rotates into the powder, the dry gas directly enters the powder, breaking down the adhesion and van der Waals forces between powder particles, reducing internal friction, and making the originally easily agglomerated and poorly fluid powder loose and flowing, promoting uniform particle diffusion and mixing, and preventing clumping; third, the dry gas removes moisture from the powder, preventing it from becoming damp and clumping. Finally, the powder is transported to its destination, falling from the discharge end of the belt conveyor and exiting through the discharge port to a predetermined position, completing the powder transport process. In this invention, the entire belt conveyor is installed within a relatively enclosed sealed chamber. Dust generated during powder loading, unloading, and conveying is contained within the sealed chamber, preventing it from spreading to the outside and thus avoiding excessive dust levels in the workshop. This meets environmental protection requirements. Furthermore, the sealed chamber also prevents external impurities from falling into the powder, eliminating the need for subsequent impurity separation and improving production efficiency. Secondly, while the entire powder conveying process takes place within the sealed chamber, this invention also incorporates a drying gas sprayed from a dispersing tube. The drying gas can not only break up clumps, improve powder flowability, and remove moisture from the powder, but also replace the air in the sealed chamber, filling the entire chamber with dry gas. This effectively prevents refractory powder from clumping due to moisture during transportation, thus improving conveying efficiency. Furthermore, the dispersing mechanism in this invention is more convenient to use and operates more smoothly than the vibration structures used by some existing manufacturers. It avoids vibration-induced loosening and other problems caused by vibration. While breaking up and dispersing powder clumps, it reduces maintenance frequency and operating costs, and improves powder conveying efficiency. In summary, this invention has the advantages of being environmentally friendly, effectively breaking up clumps, convenient to use, and highly efficient. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 2 This is a top view of the structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the dispersing mechanism in this utility model;
[0017] Figure 4 This is a schematic diagram of the material turning mechanism in this utility model;
[0018] In the diagram: 1-Sealed chamber, 2-Belt conveyor, 3-Feed pipe, 4-Discharge port, 5-Hollow shaft, 6-Dispersing tube, 7-Drive device, 8-Ventilation pipe, 9-Hot air inlet, 10-Hot air outlet, 11-Dust collector, 12-Gas heater, 13-Baffle plate, 14-Brush, 15-Flat plate, 16-Screw, 17-Handle, 18-Dust-blocking arc plate, 19-Rotating shaft, 20-Tilting plate, 21-Thin rod. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.
[0020] like Figures 1-4 As shown, this utility model includes a sealed chamber 1 and a belt conveyor 2 disposed inside the sealed chamber 1. The belt conveyor 2 is an existing conveying device used for conveying powder. A feed pipe 3 is inclinedly arranged inside the sealed chamber 1 above the feed end of the belt conveyor 2. In actual use, the feed pipe 3 can be set as a rectangular tube to facilitate the powder to be spread evenly on the conveyor belt. The higher end of the feed pipe 3 extends to the outside of the sealed chamber 1. A discharge port 4 is provided at the bottom of the sealed chamber 1 below the discharge end of the belt conveyor 2. Multiple dispersing mechanisms are evenly spaced above the belt conveyor 2 along its conveying direction. The structure includes a hollow shaft 5 and several dispersing tubes 6. The dispersing tubes 6 are connected to the cavity inside the hollow shaft 5 and are evenly arranged along the axial direction of the hollow shaft 5. One end of the hollow shaft 5 extends out of the sealed chamber 1 and is connected to a drive device 7. The drive device 7 is existing technology and is used to drive the hollow shaft 5 to rotate. In actual installation, each dispersing mechanism can be set with a drive device 7 independently or they can be linked together and run synchronously, depending on the actual situation. The other end extends out of the sealed chamber 1 and is connected to a vent pipe 8. The vent pipe 8 is used to connect to a gas source and introduce gas into the hollow shaft 5.
[0021] In operation, this invention first starts the belt conveyor 2 and the drive device 7. The conveyor belt of the belt conveyor 2 begins to run, and the drive device 7 drives the hollow shaft 5 to rotate. The hollow shaft 5 drives the dispersing tubes 6 to rotate. At the same time, dry gas is conveyed into the hollow shaft 5 through the vent pipe 8. The gas can be air or other dry gases that do not react with the powder. These dry gases are sprayed out from the ends of each dispersing tube 6, completing the preparation work. The refractory material production powder is added to the sealed chamber 1 through the feed pipe 3 and falls onto the conveyor belt of the belt conveyor 2. It is conveyed forward under the drive of the conveyor belt. During the conveying process, each dispersing mechanism performs a dispersing operation on the powder. The dispersing principle is as follows: On the one hand, the rotating dispersing tubes 6 agitate the powder through mechanical dispersing. The powder is broken up by mechanical agitation. Meanwhile, dry gas is sprayed out from the end of the dispersing tube 6, which has three functions: first, it can reasonably control the airflow pressure and directly blow away the clumps; second, when the end of the dispersing tube 6 rotates into the powder, the dry gas directly enters the powder, which can break the adhesion and van der Waals forces between powder particles, reduce the internal friction resistance between powder particles, and make the powder that is originally easy to agglomerate and has poor flowability become loose and flowable, promote the uniform diffusion and mixing of particles, and prevent the formation of clumps; third, the dry gas can remove the moisture in the powder, preventing the powder from getting damp and clumping. Finally, the powder is transported to the destination, falls from the discharge end of the belt conveyor 2, and is discharged from the discharge port 4 to the predetermined position, completing the powder transportation.
[0022] In this invention, the entire belt conveyor 2 is installed within a relatively enclosed sealed chamber 1. Dust generated during the loading, unloading, and conveying of powder is contained within the sealed chamber 1, preventing it from spreading to the outside and thus avoiding excessive dust levels in the workshop. This meets the requirements for environmentally friendly production. Furthermore, the sealed chamber 1 also acts as a barrier against external impurities, preventing them from falling into the powder and eliminating the need for subsequent impurity separation, thereby improving production efficiency. Secondly, while the entire powder conveying process takes place within the sealed chamber 1, this invention also involves the spraying of dry gas from the dispersing tube 6. The dry gas can not only break up clumps, improve the flowability of powder, and remove moisture from the powder, but also replace the air in the sealed chamber 1, so that the entire sealed chamber 1 is filled with dry gas. This effectively prevents refractory powder from clumping due to moisture during transportation and improves transportation efficiency. In addition, the dispersing mechanism set in this utility model is more convenient to use and runs more smoothly than the vibration structure set by some existing companies. It does not generate vibration and can avoid problems such as loosening of installation caused by vibration. While completing the breaking up and dispersing of powder clumps, it reduces the frequency of maintenance and the cost of use, and improves the transportation efficiency of powder.
[0023] A hot air inlet 9 is provided on the sealed chamber 1 near the discharge end of the belt conveyor 2, and a hot air outlet 10 is provided on the top of the sealed chamber 1 near the feed end of the belt conveyor 2. The hot air outlet 10 is connected to a dust collector 11 and a gas heater 12 in sequence through pipelines. The end of the dust discharge pipe of the dust collector 11 extends into the sealed chamber 1 and is located above the belt conveyor 2. The air outlet of the gas heater 12 is connected to the hot air inlet 9. In use, hot air is introduced into the sealed chamber 1 through the hot air inlet 9. This not only replaces the air in the sealed chamber 1 but also dries the powder, preventing it from becoming damp and clumping. Considering that the discharged gas still contains a lot of heat, direct discharge would waste heat. Therefore, a gas heater 12 is installed. The gas heater 12 is an existing gas heating device used to heat the gas before returning it to the sealed chamber 1 for continued use. This reduces heat waste, lowers the energy required to heat the gas, and avoids gas pollution of the surrounding environment. A dust collector 11 is installed because the discharged gas contains a lot of powder. Direct discharge would cause both environmental pollution and powder waste. The dust collector 11 can separate the powder from the gas in time and return it to the belt conveyor 2, preventing waste.
[0024] The outlet of the gas heater 12 is connected to the ventilation pipe 8 through a pipeline. Hot gas is discharged from the gas heater 12 and enters the hollow shaft 5 through the ventilation pipe 8. Then it is sprayed out from the dispersing fine pipe 6. This can dry the powder and prevent the powder from clumping due to excessive moisture. At the same time, the hot gas replaces the air in the sealed chamber 1 to prevent the powder from getting damp and clumping.
[0025] A baffle plate 13 is installed at the bottom of the sealed chamber 1 near the discharge port 4. A brush 14 is installed at the upper end of the baffle plate 13, and the bristles of the brush 14 are in contact with the lower belt of the belt conveyor 2. The baffle plate 13 can block the falling powder and prevent it from falling into the sealed chamber 1. The reason for installing the brush 14 is that some powder will adhere to the conveyor belt of the belt conveyor 2, and some powder will continuously fall into the sealed chamber 1, which will also affect the subsequent conveying of powder. Therefore, the brush 14 is installed to brush the powder adhering to the conveyor belt off.
[0026] A flat plate 15 is inclinedly arranged above the belt conveyor 2, located near the feed pipe 3. A screw 16 is rotatably mounted on the flat plate 15, with a handle 17 extending from the upper end of the screw 16 beyond the sealing chamber 1. The screw 16 and the sealing chamber 1 are connected by threads. In this invention, powder is fed into the belt conveyor 2 through the feed pipe 3 and accumulates on the conveyor belt, often forming a pile that is high in the middle and low on both sides. This pile is not conducive to the operation of the subsequent dispersing mechanism. To solve this problem, the flat plate 15 is set up. The flat plate 15 is inclined, and the powder is conveyed from the higher end of the flat plate 15 to the lower end. Due to the obstruction of the flat plate 15, the powder that is higher in the middle continuously slides to both sides, filling the gaps in the powder on both sides, and flattening the surface of the accumulated powder to form a powder conveying state with a uniform overall height. This facilitates the dispersing operation of the dispersing mechanism and improves the dispersing effect of agglomerates. Depending on the amount of powder fed, the height of the flat plate 15 needs to be adjusted accordingly, thereby adjusting the height of the powder accumulation. In this utility model, the handle 17 can be rotated to drive the screw 16 to rotate. The screw 16 is threadedly connected to the sealing chamber 1. The screw 16 can be moved up and down through the thread, thereby driving the flat plate 15 to move up and down, thus realizing the adjustment of the powder accumulation height.
[0027] Each dispersing mechanism is equipped with a dust-blocking arc plate 18 in the sealed chamber 1 above it. The dust-blocking arc plate 18 surrounds the upper part of the dispersing mechanism. Considering that in actual use, the dispersing tube 6 in the dispersing mechanism will lift some powder and generate dust, the dust-blocking arc plate 18 can block the dust in time, prevent the dust from continuing to spread upward, and make it fall quickly, thereby reducing dust.
[0028] Between each pair of adjacent dispersing mechanisms, there is a turning mechanism. The turning mechanism includes a rotating shaft 19 and a turning plate 20 set on the rotating shaft 19. In actual use, the powder at the bottom layer is not easy to be stirred, and the powder clumps in this part are not easy to break up. In order to solve this problem, the rotating shaft 19 is driven to rotate by a motor. The rotating shaft 19 drives the turning plate 20 to rotate together. The turning plate 20 continuously stirs the powder, especially turning the powder at the bottom layer to the top layer, so that the dispersing tube 6 in the dispersing mechanism can break up the clumps therein.
[0029] A number of thin rods 21 are provided on the dispersing tube 6. The thin rods 21 are set on the dispersing tube 6 and rotate with it. During the rotation, they agitate the powder, break up the clumps in the powder, and improve the dispersing efficiency of the clumps.
Claims
1. A high-efficiency powder conveying system for refractory production, comprising a sealed bin (1) and a belt conveyor (2) arranged inside the sealed bin (1), characterized in that: The belt conveyor (2) has a feed pipe (3) installed at an incline in the sealed chamber (1) above the feed end. The higher end of the feed pipe (3) extends to the outside of the sealed chamber (1). The bottom of the sealed chamber (1) below the discharge end of the belt conveyor (2) has a discharge port (4). Multiple dispersing mechanisms are evenly spaced above the belt conveyor (2) along its conveying direction. The dispersing mechanism includes a hollow shaft (5) and several dispersing tubes (6). The dispersing tubes (6) are connected to the cavity inside the hollow shaft (5). The dispersing tubes (6) are evenly arranged along the axial direction of the hollow shaft (5). One end of the hollow shaft (5) extends out of the sealed chamber (1) and is connected to a drive device (7). The other end extends out of the sealed chamber (1) and is connected to a vent pipe (8) in a sealed rotatable manner.
2. The high efficiency powder conveying system for refractory production according to claim 1, characterized in that: A hot air inlet (9) is provided on the sealed chamber (1) near the discharge end of the belt conveyor (2), and a hot air outlet (10) is provided on the top of the sealed chamber (1) near the feed end of the belt conveyor (2). The hot air outlet (10) is connected to a dust collector (11) and a gas heater (12) in sequence through pipelines. The end of the dust discharge pipe of the dust collector (11) extends into the sealed chamber (1) and is located above the belt conveyor (2). The gas outlet of the gas heater (12) is connected to the hot air inlet (9).
3. The high efficiency powder conveying system for refractory production according to claim 2, characterized in that: The outlet of the gas heater (12) is connected to the vent pipe (8) via a pipeline.
4. The efficient powder conveying system for refractory material production according to claim 1, characterized in that: A baffle plate (13) is provided at the bottom of the sealed chamber (1) near the discharge port (4). A brush (14) is provided at the upper end of the baffle plate (13). The bristles of the brush (14) are in contact with the lower belt of the belt conveyor (2).
5. The high efficiency powder conveying system for refractory production according to claim 1, characterized in that: A flat plate (15) is inclined above the belt conveyor (2). The flat plate (15) is located near the feed pipe (3). A screw (16) is rotatably mounted on the flat plate (15). A handle (17) is provided after the upper end of the screw (16) extends out of the sealing chamber (1). The screw (16) and the sealing chamber (1) are connected by threads.
6. The high efficiency powder conveying system for refractory production according to claim 1, characterized in that: Each of the sealing chambers (1) above the dispersing mechanism is equipped with a dust-proof arc plate (18).
7. The high efficiency powder conveying system for refractory production according to claim 1, characterized in that: A material turning mechanism is provided between each pair of adjacent dispersing mechanisms. The material turning mechanism includes a rotating shaft (19) and a material turning plate (20) provided on the rotating shaft (19).
8. The high efficiency powder conveying system for refractory production according to claim 1, characterized in that: The dispersing tube (6) is provided with several thin rods (21).