Drying system for wear-resistant refractory castable production
Through the design of layered drying, blowing and diversion components and collection guides, the problems of high energy consumption and poor continuity in the drying process of wear-resistant refractory castables are solved, and efficient and continuous material drying effects are achieved, which is suitable for the production of wear-resistant refractory castables.
Patent Information
- Application Number
- CN202510993646.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-10-10
AI Technical Summary
In the existing technology, the drying process of wear-resistant and refractory castables has problems such as high energy consumption of the driving motor, uneven material dispersion, and poor continuity. Tunnel drying cannot effectively dry the thicker parts inside the material.
The layered drying blowing and diversion components are used to blow the surface of the material with airflow, drying the material layer by layer. The dried material is collected into the diversion unit with the help of the collection guide to achieve dry separation of the surface and interior of the material layer. The efficient contact area of the tunnel conveying is utilized to gradually reduce the distance between the heating source and the material surface to adapt to the change of material thickness.
It achieves continuous and efficient drying of large volumes of materials, improves drying efficiency, reduces energy consumption, ensures uniform drying of the surface and interior of the materials, and improves the continuity of the drying system.
Smart Images
Figure CN120760437A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of powder drying, in particular to a drying system for producing wear-resistant and refractory castables. Background Art
[0002] Wear-resistant refractory castables are powdery materials, and drying is an essential process in the processing of wear-resistant refractory castables. Currently, the commonly used drying methods are stirring drying, tunnel drying, etc. Stirring drying can fully disperse the powder, but the drying chamber is small and the powder cannot be spread flat, so it can only rely on rotational power to disperse. If the powder volume is large, the fan blade resistance is large, the kinetic energy demand for the drive motor is high, and when drying large volumes of material, the material needs to be dispersed in multiple stirring chambers, and the material needs to be replaced after the drying is completed, which lacks continuity. The main advantage of tunnel drying is that the material is spread flat and continuous, and the flattening increases the contact area with the air. The high-temperature surface can directly act on the surface of the flattened material, and the liquid in the material can be fully dried. The disadvantage is that the material still has a certain thickness, and the lower layer of material cannot directly act on the drying surface. Summary of the Invention
[0003] The purpose of the present invention is to provide a drying system for the production of wear-resistant refractory castables, which utilizes the efficient contact area of tunnel conveying and the characteristics of blowing and reduced surface drying quality to achieve surface drying layer separation, accelerate tunnel conveying drying efficiency, and achieve continuous and efficient drying of large volumes of materials to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A drying system for producing wear-resistant and refractory castables, comprising a drying channel and a conveyor belt installed inside the drying channel, wherein the surface of the drying channel is paved with material, and further comprising:
[0006] Layered drying blowing and diverting components are linearly distributed inside the drying channel along the conveying direction of the conveyor belt, and are used to blow the flat materials on the surface of the drying channel layer by layer from top to bottom to the horizontal side of the conveyor belt perpendicular to the conveying direction;
[0007] A collecting guide is installed inside the drying channel, and the collecting end of the collecting guide is perpendicular to the conveying direction of the conveyor belt. The collecting guide is used to receive the material blown by the layered drying blowing and diversion assembly, and the collecting guide transports the material to the diversion unit.
[0008] As a further further scheme of the present application: the layered drying blowing and shunting assembly is composed of a first heating source and a horizontal array moving nozzle, the first heating source is distributed along an axis on the top surface of the inner wall of the drying channel, the height of the first heating source from the conveying belt gradually decreases along the material conveying direction, and the long side of the first heating source is parallel to the axis.
[0009] As a further further scheme of the present application: the horizontal array moving nozzle is distributed along a distribution axis on the side surface of the drying channel, and the distribution axis has an included angle with the axis.
[0010] As a further further scheme of the present application: the spraying direction of the horizontal array moving nozzle is located in the -- plane, the collection guide is a group and is linearly distributed on one side of the conveying belt, and the open end of the collection guide corresponds to the spraying end of the horizontal array moving nozzle.
[0011] As a further further scheme of the present application: the first heating source is a long strip, and the long side of the first heating source is parallel to the axis.
[0012] As a further further scheme of the present application: the layered drying blowing and shunting assembly is composed of a second heating source and a vertical swinging nozzle, the vertical swinging nozzle is equidistantly distributed along the center line of the drying channel, the height of the second heating source from the conveying belt gradually decreases along the material conveying direction, the second heating source is divided into two groups, and the two groups of second heating sources are distributed on the two sides of the vertical swinging nozzle.
[0013] As a further further scheme of the present application: the spraying direction of the second heating source is located in the -- plane, and the collection guide is two groups and is linearly distributed on the two sides of the conveying belt.
[0014] As a further further scheme of the present application: the second heating source is a long strip, and the long side of the second heating source is parallel to the axis.
[0015] As a further further scheme of the present application: the collection guide comprises a guide part, an entering part and a closed sliding part, the closed sliding part is arranged at the bottom of the entering part, a limiting sliding groove is arranged in the side wall of the conveying belt, the limiting sliding groove is in sliding connection with the closed sliding part, and the entering part and the shunting unit are connected through the guide part and communicate with each other.
[0016] As a further further scheme of the present application: the shunting unit is a drying container, a storage container, a drying transfer channel or a conveying channel.
[0017] Compared with the prior art, the present application has the following beneficial effects:
[0018] This technical solution mainly utilizes the reduced weight of the upper layer of material after drying, and utilizes the characteristics of powder to blow air on the surface of the material. The upper layer of powder is dried first, and the dried powder flows to one side, so that the surface of the material layer is removed to expose the wet lower layer, and the dry material is collected to another place. The exposed wet layer at this time can further improve the drying effect. And as the thickness of the material layer decreases, the height of the first heating source from the conveyor belt gradually decreases along the material conveying direction. The distance between the surface of the material and the heating source is fixed, avoiding the problem of changes in drying speed due to the difference in the height of the material surface and the first heating source.
[0019] Further advantages: Initially, the surface of the material layer is moist. The air blown out by the layered drying blowing and diversion assembly disperses the moist air on the surface of the material layer, increasing air mobility and accelerating the drying speed of the material layer. After the surface is dispersed, the material exposes a moist layer, which is further accelerated by the layered drying blowing and diversion assembly.
[0020] In summary, this technical solution utilizes the efficient contact area of tunnel conveying and the characteristics of blowing and reduced surface drying quality to achieve surface drying layer separation, accelerate tunnel conveying drying efficiency, and realize continuous and efficient drying of large-volume materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 It is a front view schematic diagram of a first embodiment of a drying system for producing wear-resistant refractory castables;
[0023] Figure 2 It is a front schematic diagram of a second embodiment of a drying system for producing wear-resistant refractory castables;
[0024] Figure 3 A side cross-sectional schematic diagram of a first embodiment of a drying system for producing wear-resistant refractory castables;
[0025] Figure 4 A side cross-sectional schematic diagram of a second embodiment of a drying system for producing wear-resistant refractory castables;
[0026] In the figure: 100, distribution axis; 1, drying channel; 2, conveyor belt; 21, limiting slide; 3, layered drying blowing diversion component; 3a, first heating source; 3b, horizontally arranged nozzle; 3c, second heating source; 3d, vertically swinging nozzle; 4, collecting guide; 41, guiding part; 42, entering part; 43, closed sliding part; 5, diversion unit. DETAILED DESCRIPTION
[0027] See also Figures 1-4 :Example 1:
[0028] In this embodiment, a drying channel 1 and a conveyor belt 2 installed inside the drying channel 1 are included, and the surface of the drying channel 1 is paved with materials.
[0029] In this embodiment, the drying duct 1 is elongated, with a conveyor belt 2 located within it, running parallel to the long side of the drying duct 1. A portion of the conveyor belt 2 is located outside the drying duct 1, and the exposed surface of the conveyor belt 2 can continuously spread the material. This material spreading can be adjusted by using obstacles such as scrapers.
[0030] In this embodiment: the layered drying blowing and diverting component 3 is linearly distributed inside the drying channel 1 along the conveying direction of the conveyor belt 2, and the height of the first heating source 3a from the conveyor belt 2 gradually decreases along the material conveying direction. The layered drying blowing and diverting component 3 is used to blow the flat material on the surface of the drying channel 1 from top to bottom layer by layer to the horizontal side of the conveyor belt 2 perpendicular to the conveying direction. The collecting guide 4 is installed inside the drying channel 1, and the collecting end of the collecting guide 4 is perpendicular to the conveying direction of the conveyor belt 2. The collecting guide 4 is used to receive the material blown by the layered drying blowing and diverting component 3, and the collecting guide 4 transports the material to the diversion unit 5.
[0031] In this embodiment: This technical solution mainly utilizes the weight reduction of the upper layer of material after drying, utilizes the characteristics of powder, and uses airflow to blow on the surface of the material. The upper layer of powder is dried first, and the dried powder flows to one side, so that the surface of the material layer is removed to expose the wet lower layer, and the dry material is collected to another place. The exposed wet layer at this time can further improve the drying effect. And as the thickness of the material layer decreases, the height of the first heating source 3a from the conveyor belt 2 gradually decreases along the material conveying direction. The distance between the surface of the material and the heating source is fixed to avoid the problem of changes in drying speed due to the difference in the height of the material surface and the first heating source 3a.
[0032] Further advantages: in the initial stage of the material layer, the surface is wet, the air blown by the blowing and shunting assembly 3 can blow away the wet air on the surface of the material layer, increase the flowability of the air, and accelerate the drying speed of the material layer. After the surface is blown away, the material of the wet layer is exposed, and the wet layer is further subjected to the accelerated drying effect of the blowing and shunting assembly 3.
[0033] The specific implementation is as follows:
[0034] In this embodiment: the blowing and shunting assembly 3 is composed of a first heating source 3a and a horizontal row of moving nozzles 3b, the first heating source 3a is distributed along the Y-axis on the top surface of the inner wall of the drying channel 1, the long side of the first heating source 3a is parallel to the X-axis, the horizontal row of moving nozzles 3b is distributed along the distribution axis 100 on the side of the drying channel 1, the distribution axis 100 has an angle with the Y-axis, the spraying direction of the horizontal row of moving nozzles 3b is in the X-O-Z plane, the collection guide 4 is a group and is linearly distributed on one side of the conveying belt 2, the opening end of the collection guide 4 corresponds to the spraying end of the horizontal row of moving nozzles 3b, the first heating source 3a is long strip-shaped, and the long side of the first heating source 3a is parallel to the x-axis.
[0035] In this embodiment: the first heating source 3a is arranged on the surface of the drying channel 1, and the horizontal row of moving nozzles 3 is arranged on the side of the drying channel 1. Please refer to Figure 1 and Figure 3 . Figure 1 In the image, the horizontal row of moving nozzles 3 is not obvious along the distribution axis 100, but in the coordinate system, the position of the distribution axis 100 can be seen. Through Figure 3 , it can be seen that the horizontal row of moving nozzles 3 has a vertically staggered posture in the Z-axis. Since the thickness of the material layer gradually decreases, the height of the horizontal row of moving nozzles 3 gradually decreases to adapt to the problem of the decrease in the thickness of the material layer. The horizontal row of moving nozzles 3 is provided with a movable mechanism, which can make the horizontal row of moving nozzles 3 vertically swing in the X-O-Z plane. When the horizontal row of moving nozzles 3 blows downwardly to the material layer, the dried material on the surface of the material layer is light in quality, and the material is blown up by the wind and flows to the collection guide 4, and is concentrated and stored through the collection guide 4. The long side of the first heating source 3a is parallel to the x-axis, and a flow channel is formed between adjacent two first heating sources 3a to reduce the flight resistance to the material. The material collected through the shunting unit 5 is completely dried material or high-drying-rate material, which can be conveyed to another process or stored through the shunting unit 5.
[0036] Please refer to Figures 1-4 , embodiment two:
[0037] It includes a drying channel 1 and a conveyor belt 2 installed inside the drying channel 1. The surface of the drying channel 1 is paved with materials. The layered drying blowing and diversion components 3 are linearly distributed inside the drying channel 1 along the conveying direction of the conveyor belt 2. The layered drying blowing and diversion components 3 are used to blow the flat materials on the surface of the drying channel 1 from top to bottom layer by layer to the horizontal side of the conveyor belt 2 perpendicular to the conveying direction. The collecting guide 4 is installed inside the drying channel 1. The collecting end of the collecting guide 4 is perpendicular to the conveying direction of the conveyor belt 2. The collecting guide 4 is used to receive the materials blown by the layered drying blowing and diversion components 3. The collecting guide 4 transports the materials to the diversion unit 5.
[0038] The difference between this embodiment and the first embodiment is that the composition of the layered drying blowing and diversion assembly 3 is changed, and the position and number of the collecting guides 4 are changed. The specific changes are as follows:
[0039] This embodiment includes: a layered drying blowing diversion component 3 is composed of a second heating source 3c and a vertical swinging nozzle 3d, the vertical swinging nozzle 3d is evenly distributed along the center line of the drying channel 1, the height of the second heating source 3c from the conveyor belt 2 gradually decreases along the material conveying direction, the second heating source 3c is divided into two groups, the two groups of second heating sources 3c are distributed on both sides of the vertical swinging nozzle 3d, the spraying direction of the second heating source 3c is located in the XOZ plane, the collecting guide 4 is two groups and is linearly distributed along both sides of the conveyor belt 2, the second heating source 3c is a long strip, and the long side of the second heating source 3c is parallel to the x-axis.
[0040] This embodiment is applicable to the problem that the conveyor belt 2 has a large width in the X-axis and the first heating source 3a is in the large width state in the X-axis, and the wind force cannot act on the material at the far end of the X-axis.
[0041] The vertical oscillating nozzle 3d is centrally positioned, with the secondary heat sources 3c symmetrically located on either side of it. In a static state, the spray direction of the vertical oscillating nozzle 3d is vertically downward, facing the plane of the conveyor belt 2. In a dry state, the vertical oscillating nozzle 3d oscillates left and right, halving the length of the wind force acting on the X-axis. Due to the low wind force, it acts perpendicularly on the wetted surface of the material, increasing the van der Waals forces between the materials without causing deformation of the material layer. The powder dried on the surface of the material layer is then collected by the collection guide 4 on both sides.
[0042] Supplementary explanation of Example 1 and Example 2:
[0043] The collecting guide 4 includes a guiding portion 41, an entry portion 42, and a closed sliding portion 43. The closed sliding portion 43 is arranged at the bottom of the entry portion 42. A limiting slide groove 21 is opened on the side wall of the conveyor belt 2. The limiting slide groove 21 and the closed sliding portion 43 are sliding links. The entry portion 42 and the diversion unit 5 are transitioned through the guiding portion 41 and are connected to each other. The diversion unit 5 is a drying container or storage container or a drying transfer channel or a conveying channel.
[0044] See also Figure 3-Figure 4 A limiting chute 21 is provided on the side of the conveyor belt 2, and the closed sliding portion 43 cooperates with the limiting chute 21 for sliding friction, so that the powder will not enter the assembly gap between the limiting chute 21 and the closed sliding portion 43. The entry portion 42 forms a sweeping surface that completely covers the first heating source 3a or the horizontally arranged nozzle 3. After the powder enters the entry portion 42, it is guided to the diversion unit 5 through the guide portion 41 for diversion.
[0045] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A drying system for producing wear-resistant refractory castables, comprising a drying channel (1) and a conveyor belt (2) installed inside the drying channel (1), wherein the surface of the drying channel (1) is paved with material, and characterized in that: Also includes: A layered drying blowing and diverting assembly (3) is linearly distributed inside the drying channel (1) along the conveying direction of the conveyor belt (2), and the layered drying blowing and diverting assembly (3) is used to blow the flat materials on the surface of the drying channel (1) layer by layer from top to bottom to the horizontal side of the conveyor belt (2) perpendicular to the conveying direction; A collecting guide (4) is installed inside the drying channel (1), and the collecting end of the collecting guide (4) is perpendicular to the conveying direction of the conveyor belt (2). The collecting guide (4) is used to receive the material blown by the layered drying blowing and diversion component (3), and the collecting guide (4) conveys the material to the diversion unit (5).
2. A drying system for producing wear-resistant and refractory castables according to claim 1, characterized in that: The layered drying blowing and diversion assembly (3) is composed of a first heating source (3a) and a horizontally arranged nozzle (3b), wherein the first heating source (3a) is distributed along the Y axis on the top surface of the inner wall of the drying channel (1), the height of the first heating source (3a) from the conveyor belt (2) gradually decreases along the material conveying direction, and the long side of the first heating source (3a) is parallel to the X axis.
3. A drying system for producing wear-resistant and refractory castables according to claim 2, characterized in that: The horizontally arranged nozzles (3b) are distributed on the side of the drying channel (1) along a distribution axis (100), and the distribution axis (100) forms an angle with the Y axis.
4. A drying system for producing wear-resistant and refractory castables according to claim 2, characterized in that: The spraying direction of the horizontally arranged nozzle (3b) is located in the XOZ plane, the collecting guide (4) is a group and is linearly distributed along a single side of the conveyor belt (2), and the opening end of the collecting guide (4) corresponds to the spraying end of the horizontally arranged nozzle (3b).
5. A drying system for producing wear-resistant and refractory castables according to claim 2, characterized in that: The first heating source (3a) is in the shape of a long strip, and the long side of the first heating source (3a) is parallel to the x-axis.
6. A drying system for producing wear-resistant and refractory castables according to claim 1, characterized in that: The layered drying blowing and diversion assembly (3) is composed of a second heating source (3c) and a vertical swing nozzle (3d), wherein the vertical swing nozzle (3d) is evenly distributed along the center line of the drying channel (1), and the height of the second heating source (3c) from the conveyor belt (2) gradually decreases along the material conveying direction. The second heating source (3c) is divided into two groups, and the two groups of the second heating sources (3c) are distributed on both sides of the vertical swing nozzle (3d).
7. A drying system for producing wear-resistant and refractory castables according to claim 6, characterized in that: The spraying direction of the second heating source (3c) is located in the XOZ plane, and the collecting guides (4) are in two groups and are linearly distributed along both sides of the conveyor belt (2).
8. A drying system for producing wear-resistant and refractory castables according to claim 6, characterized in that: The second heating source (3c) is in the shape of a long strip, and the long side of the second heating source (3c) is parallel to the x-axis.
9. A drying system for producing wear-resistant and refractory castables according to claim 1, characterized in that: The collecting guide (4) comprises a guiding portion (41), an entry portion (42), and a closed sliding portion (43); the closed sliding portion (43) is arranged at the bottom of the entry portion (42); a limiting sliding groove (21) is provided on the side wall of the conveyor belt (2); the limiting sliding groove (21) and the closed sliding portion (43) are sliding links; the entry portion (42) and the diversion unit (5) are transitioned through the guiding portion (41) and are in communication with each other.
10. A drying system for producing wear-resistant and refractory castables according to claim 1, characterized in that: The diversion unit (5) is a drying container or a storage container or a drying transfer channel or a conveying channel.