Double-shaft paddle type mixing equipment for mixing and sintering semi-coke powder

Abstract

The utility model discloses double-shaft paddle type mixing equipment for semi-coke powder mixing and sintering, which comprises a mixing cavity, two rotating shafts are rotatably arranged in the mixing cavity, a main stirring paddle is fixed on the rotating shafts and is of a straight plate structure, the side end of the main stirring paddle is detachably connected with an auxiliary stirring component, and the auxiliary stirring component is fixedly connected with the mixing cavity. The auxiliary stirring assembly comprises a connecting block and a plurality of auxiliary stirring blades with arc-shaped bent structures, the primary overall flow is realized by turning and pushing materials in a large area through the main stirring blades, so that the materials are uniformly distributed, and a foundation is laid for fine mixing. Arc-shaped auxiliary stirring blades of the auxiliary stirring assembly locally scatter and shear the materials, the mixing uniformity and efficiency are improved, the flowing direction of the materials is changed through a hemispheroid plate and a smooth ceramic coating of the inward-convex flow guide assembly, a complex flowing path is formed, material accumulation is avoided, the stirring effect is further improved, and it is ensured that the mixing quality is stable.

Description

Technical fields:

[0001] This utility model relates to the field of semi-coke powder mixing technology, specifically to a twin-shaft paddle mixer for semi-coke powder mixing and sintering. Background technology:

[0002] Semi-coke powder, a type of semi-coke with high fixed carbon and high calorific value, is inexpensive and an ideal resource for reducing fuel costs. It can replace some coke powder in sintering, balance sulfur content, reduce flue gas emissions, and lower desulfurizer usage and production costs. However, traditional mixing equipment has shortcomings in industrial production. For example, single-shaft mixers have limited mixing ranges, and dual-shaft mixers have a simple mixing structure, neither of which can effectively mix semi-coke powder, affecting product quality. Furthermore, the smooth inner walls of traditional equipment easily lead to material accumulation, reducing mixing efficiency and uniformity, and failing to meet the demands of modern industry for high-quality, high-efficiency mixing and sintering. Utility Model Content:

[0003] To address this issue, this invention provides a twin-shaft paddle mixer for mixing and sintering semi-coke powder, overcoming the shortcomings of existing mixing equipment in industrial production. For example, single-shaft mixers have limited mixing ranges, and twin-shaft mixers have simple mixing structures, neither of which can effectively mix semi-coke powder, thus affecting product quality. Furthermore, the smooth inner walls of traditional equipment easily lead to material accumulation, reducing mixing efficiency and uniformity, failing to meet the demands of modern industry for high-quality, high-efficiency mixing and sintering.

[0004] This utility model is implemented by the following technical solution:

[0005] A twin-shaft paddle mixer for sintering semi-coke powder includes a mixing chamber with two rotating shafts inside. A main stirring blade is fixed on the rotating shaft. The main stirring blade has a straight plate structure, and a secondary stirring assembly is detachably connected to the side of the main stirring blade. The secondary stirring assembly includes a connecting block and multiple arc-shaped curved secondary stirring blades. The secondary stirring blades are fixed at equal intervals on the side of the connecting block.

[0006] An internally convex flow guide assembly is fixed on the inner wall of the mixing chamber. The internally convex flow guide assembly includes multiple hemispherical plates evenly distributed on the inner wall of the mixing chamber. The surface of the hemispherical plates is coated with a smooth ceramic coating.

[0007] Preferably, the auxiliary stirring assembly is fitted with the connecting groove on the side end of the main stirring blade via a connecting block, and is fixed by locking bolts.

[0008] Preferably, the auxiliary stirring blades are arranged on both sides of the main stirring blades.

[0009] Preferably, the top and bottom of the mixing chamber are fixedly connected to an inlet pipe and an outlet pipe, respectively, and a valve is provided on the outlet pipe.

[0010] The advantages of this invention are as follows: The main stirring blades achieve initial overall flow by agitating and pushing the material over a large area, resulting in uniform material distribution and laying the foundation for fine mixing. The arc-shaped auxiliary stirring blades of the secondary stirring assembly locally disperse and shear the material, improving mixing uniformity and efficiency. Furthermore, the hemispherical plates and smooth ceramic coating of the internally convex flow guide component alter the material flow direction, forming a complex flow path, preventing material accumulation, further enhancing the stirring effect, and ensuring stable mixing quality. Attached image description:

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0013] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0014] In the diagram: 1. Mixing chamber; 2. Rotating shaft; 3. Main stirring blade; 4. Secondary stirring assembly; 5. Convex guide assembly; 6. Connecting block; 7. Secondary stirring blade. Detailed implementation method:

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 , Figure 2 As shown, the twin-shaft paddle mixer for mixing and sintering semi-coke powder includes a mixing chamber 1 as its main structure, with a feed pipe at the top and a discharge pipe at the bottom. The feed pipe is used for inputting materials such as semi-coke powder, while the discharge pipe is used for outputting the mixed material. A valve is installed on the discharge pipe to control the material discharge.

[0017] Inside the mixing chamber 1, two rotating shafts 2 are rotatably mounted. Each shaft 2 is fixed with a main stirring blade 3, which has a straight plate structure. Driven by the shafts 2, the main stirring blades 3 rotate, playing a primary role in stirring and conveying the materials within the mixing chamber, promoting a wide flow of materials within the chamber, and achieving initial mixing.

[0018] A secondary stirring assembly 4 is detachably connected to the side of the main stirring blade 3. The secondary stirring assembly 4 locally disperses and shears the material. The secondary stirring assembly 4 includes a connecting block 6 and multiple secondary stirring blades 7. The connecting block 6 is inserted into a connecting groove, which is fixed to the side of the main stirring blade 3. A locking bolt is screwed into the connecting groove, realizing the detachable connection between the secondary stirring assembly 4 and the main stirring blade 3. This connection method facilitates operation when the secondary stirring blades 7 are worn or need to be replaced with different specifications. Multiple secondary stirring blades 7 are fixed at equal intervals on the side of the connecting block 6 and arranged on both sides of the main stirring blade 3. The secondary stirring blades 7 adopt an arc-shaped curved structure, which can generate unique dispersing and shearing forces on the material during rotation, enhancing the uniformity of material mixing.

[0019] Multiple convex flow guide components 5 are fixedly and evenly distributed on the inner wall of the mixing chamber 1. Each convex flow guide component 5 includes multiple hemispherical plates evenly distributed on the inner wall of the mixing chamber 1, forming a complete convex flow guide structure. This ensures that the flow guide function is stably performed during equipment operation. Furthermore, the surface of the hemispherical plates is coated with a smooth ceramic coating, which not only reduces the friction between the material and the chamber wall during mixing but also changes the flow direction of the material, enabling the material to form a more complex and efficient flow path within the mixing chamber, thereby further improving the mixing effect.

[0020] Actual work process:

[0021] Semi-coke powder enters the mixing chamber through the feed pipe at the top of the mixing chamber 1. The feed pipe is designed to allow the material to fall directly into the mixing chamber 1, preparing it for the subsequent stirring and mixing process.

[0022] In this dual-shaft paddle mixer, the two rotating shafts 2 are driven by a drive structure based on existing technology and are set on the outer wall of the mixing chamber 1. The drive structure is usually driven by a motor through a reducer. The high-speed rotational power output by the motor is reduced and increased in torque by the reducer and then transmitted to the two rotating shafts 2 to ensure that the rotating shafts 2 rotate smoothly at a suitable speed, thereby driving the main stirring blades 3 fixed on them to work normally.

[0023] When the material enters the mixing chamber 1, the two rotating shafts 2 begin to rotate, and the main stirring blades 3 fixed on the rotating shafts 2 rotate accordingly. Since the main stirring blades 3 adopt a straight plate structure, they can tumble and push the material over a large area during rotation, so that the material initially forms an overall material flow in the mixing chamber 1, making the material more evenly distributed in the mixing chamber, laying the foundation for subsequent fine mixing.

[0024] The auxiliary stirring component 4 at the side end of the main stirring blade 3 comes into play at this time. The connecting block 6 is inserted into the connecting groove at the side end of the main stirring blade 3 and fixed by the locking bolt to ensure a stable connection. At the same time, other types of auxiliary stirring components 4 can be replaced as needed.

[0025] Multiple auxiliary stirring blades 7 with arc-shaped curved structures are evenly distributed on the side of the connecting block 6 and located on both sides of the main stirring blade 3. When the equipment is running, as the main stirring blade 3 rotates, the auxiliary stirring blades 7 also rotate. Their arc-shaped structure can locally disperse and shear the material, further refine and mix the initially mixed material, make up for the shortcomings of the straight plate structure of the main stirring blade 3 in local mixing, and improve the uniformity of material mixing.

[0026] The convex flow guide component 5 on the inner wall of the mixing chamber 1 is composed of multiple evenly distributed hemispherical plates, each with a smooth ceramic coating. During the mixing process by the main and auxiliary stirring blades, the material impacts the hemispherical plates. The special shape of the hemispherical plates alters the flow direction of the material, creating a complex and varied flow path within the mixing chamber. This prevents localized accumulation or uneven mixing, further enhancing the mixing effect.

[0027] After the materials are thoroughly stirred and mixed in the mixing chamber 1 to achieve the expected mixing uniformity, the valve on the discharge pipe is opened, and the materials are discharged through the discharge pipe at the bottom of the mixing chamber 1, thus completing the entire mixing process of the materials for sintering.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A twin-shaft paddle mixer for mixing and sintering semi-coke powder, comprising a mixing chamber (1) having two rotating shafts (2) rotatably arranged inside, wherein a main stirring paddle (3) is fixed on the rotating shafts (2), characterized in that, The main stirring blade (3) has a straight plate structure, and the side end of the main stirring blade (3) is detachably connected to the auxiliary stirring assembly (4). The auxiliary stirring assembly (4) includes a connecting block (6) and multiple arc-shaped curved auxiliary stirring blades (7). The auxiliary stirring blades (7) are fixed at equal intervals on the side of the connecting block (6). The inner wall of the mixing chamber (1) is fixed with an internally convex flow guide assembly (5), which includes a plurality of hemispherical plates evenly distributed on the inner wall of the mixing chamber (1), and the surface of the hemispherical plates is coated with a smooth ceramic coating.

2. The twin-shaft paddle mixer for mixing and sintering semi-coke powder according to claim 1, characterized in that, The auxiliary stirring assembly (4) is connected to the connecting groove on the side of the main stirring blade (3) via the connecting block (6) and is fixed by the locking bolt.

3. The twin-shaft paddle mixer for mixing and sintering semi-coke powder according to claim 2, characterized in that, The auxiliary stirring blades (7) are arranged on both sides of the main stirring blades (3).

4. The twin-shaft paddle mixer for mixing and sintering semi-coke powder according to claim 3, characterized in that, The mixing chamber (1) is fixedly connected to the top and bottom of the feed pipe and the discharge pipe, respectively, and the discharge pipe is equipped with a valve.

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