Pulverized coal stirring device

Abstract

The utility model relates to the technical field of pulverized coal processing, and discloses a pulverized coal stirring device which comprises a stirring main body, the top of the stirring main body penetrates through the interior and is fixedly connected with a feeding pipe, the bottom of the stirring main body penetrates through the interior and is fixedly connected with a discharging pipe, and the interior of the stirring main body is symmetrically and rotatably connected with two spiral stirring rods. A switching structure is arranged at the front part of the stirring main body and comprises a sliding telescopic shaft and an auxiliary gear, one ends of the two spiral stirring rods penetrate through the front part of the stirring main body and are fixedly connected with spring universal joints, one ends of the two spring universal joints are fixedly connected with main gears, and the sliding telescopic shaft is slidably connected to the front part of the stirring main body; the auxiliary gear is fixedly connected with one end of the sliding telescopic shaft, the two spiral stirring rods can be quickly switched between a reverse stirring mode and a same-direction discharging mode through meshing switching of the sliding telescopic shaft and the auxiliary gear, shutdown or component disassembly is not needed, and the process time is remarkably shortened.

Description

Technical Field

[0001] This utility model relates to the field of coal powder processing technology, specifically a coal powder stirring device. Background Technology

[0002] Coal powder processing and mixing is a key pretreatment step in coal energy utilization and in metallurgy, chemical industry and other fields. Its core objective is to uniformly mix coal powder with additives such as combustion improvers to enhance combustion efficiency or specific chemical reaction performance.

[0003] Chinese patent CN211837612U discloses a spiral mixing tank, including a tank body. Four support rods are fixedly connected to the outer wall of the tank body. A cover plate is fixedly connected to the upper end of the tank body. Two feeding pipes are symmetrically fixedly connected to the upper side wall of the cover plate. A discharge pipe is fixedly connected to the lower side wall of the tank body. A drive motor is fixedly connected to the upper side wall of the cover plate. The drive motor is located in the middle of the cover plate. A rotation hole is opened on the lower side wall of the cover plate. A stirring rod is fixedly connected to the output shaft of the drive motor. The stirring rod passes through the cover plate through the rotation hole. Spiral blades are fixedly connected to the rod wall of the stirring rod inside the tank body. An auxiliary stirring mechanism is connected to the inner wall of the tank body.

[0004] Although the aforementioned patent can improve the mixing speed of the spiral mixer and effectively improve the mixing efficiency of the spiral mixer, the patent adopts a fixed single spiral mixing method, which has problems such as low mixing efficiency and a lot of material residue after unloading. Utility Model Content

[0005] The purpose of this invention is to provide a coal powder mixing device to solve the problems of low mixing efficiency and excessive material residue in the existing single-spiral mixing method.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal powder mixing device, comprising a mixing body, a feed pipe fixedly connected through the top of the mixing body, a discharge pipe fixedly connected through the bottom of the mixing body, two spiral mixing rods symmetrically rotatably connected inside the mixing body, a switching structure provided at the front of the mixing body, the switching structure including a sliding telescopic shaft and a secondary gear, one end of each of the two spiral mixing rods being fixedly connected through the front of the mixing body to a spring universal joint, one end of each of the two spring universal joints being fixedly connected to a main gear, the sliding telescopic shaft being slidably connected to the front of the mixing body, and the secondary gear being fixedly connected to one end of the sliding telescopic shaft.

[0007] Preferably, a motor is fixedly connected to the rear of the stirring body, and the output shaft of the motor is fixedly connected to a spiral stirring rod on one side.

[0008] Preferably, the two main gears mesh with each other, and the auxiliary gear is located between the tops of the two main gears.

[0009] Preferably, a support plate is provided at the front of the two main gears, and both main gears are slidably connected to the rear of the support plate, and the auxiliary gear is also slidably connected to the rear of the support plate.

[0010] Preferably, support rod one and support rod two are provided on both sides of the rear part of the support plate, and support rod one and support rod two are arranged in a cross pattern. Sliding blocks are slidably connected to both sides of the rear part of the support plate near the top, and sliding blocks are also slidably connected to both sides of the front part of the mixing body near the bottom. A pair of fixing blocks are fixedly connected to both sides of the rear part of the support plate near the bottom, and a pair of fixing blocks are also fixedly connected to both sides of the front part of the mixing body near the top. The two ends of support rod one are rotatably connected to two sliding blocks respectively, and the two ends of support rod two are rotatably connected to two pairs of fixing blocks respectively. A through rod is connected through the center of support rod one and support rod two.

[0011] Preferably, a fixing plate is fixedly connected to the front part of the mixing body near the top, and a cylinder is fixedly connected to the top of the fixing plate.

[0012] Preferably, the output shaft of the cylinder passes through the bottom of the fixed plate and is fixedly connected to the sliding telescopic shaft, and the top of the support plate is slidably connected to the bottom of the fixed plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By switching between the sliding telescopic shaft and the secondary gear, the two spiral stirring rods can quickly switch between reverse stirring and unidirectional unloading modes without stopping the machine or disassembling parts, significantly shortening the process time.

[0015] The spring universal joint flexibly bends when the gear position changes, ensuring continuous power transmission and avoiding transmission interruption during the movement of the main gear, thus balancing the uniformity of mixing and the smoothness of unloading.

[0016] The support plate, together with the scissor-shaped support rods one and two, constitute a composite guiding mechanism, which restricts the main gear to move only in a straight line, preventing gear wear or jamming caused by deviation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a coal powder stirring device according to an embodiment of the present utility model;

[0018] Figure 2 This is a bottom view of the overall structure in an embodiment of this utility model;

[0019] Figure 3 This is an internal view of the stirring body in an embodiment of the present invention;

[0020] Figure 4This is a diagram illustrating support one and support rod two in an embodiment of this utility model;

[0021] Figure 5 This is a diagram showing the fixing plate and cylinder in an embodiment of this utility model.

[0022] In the diagram: 1. Mixing body; 2. Feed pipe; 3. Switching structure; 4. Discharge pipe; 5. Motor; 6. Spiral mixing rod; 7. Spring universal joint; 8. Main gear; 9. Sliding telescopic shaft; 10. Secondary gear; 11. Support plate; 12. Sliding block; 13. Support rod one; 14. Fixing block; 15. Through rod; 16. Support rod two; 17. Fixing plate; 18. Cylinder. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Combination Figure 1 - Figure 5 A coal powder mixing device includes a mixing body 1. A feed pipe 2 is fixedly connected to the top of the mixing body 1 through its interior, and a discharge pipe 4 is fixedly connected to the bottom of the mixing body 1 through its interior. Two spiral mixing rods 6 are symmetrically rotatably connected inside the mixing body 1. A switching structure 3 is provided at the front of the mixing body 1. The switching structure 3 includes a sliding telescopic shaft 9 and a secondary gear 10. One end of each of the two spiral mixing rods 6 is fixedly connected to a spring universal joint 7 through the front of the mixing body 1. One end of each of the two spring universal joints 7 is fixedly connected to a main gear 8. The sliding telescopic shaft 9 is slidably connected to the front of the mixing body 1, and the secondary gear 10 is fixedly connected to one end of the sliding telescopic shaft 9.

[0026] In actual operation, coal powder and combustion aid are fed into the interior of the mixing body 1 through the feed pipe 2. Then, the motor 5 is started, which drives the spiral stirring rod 6 on one side to rotate, thereby driving the spring universal joint 7 on one side to rotate synchronously. And through two meshing main gears 8, the spring universal joint 7 on the other side and the spiral stirring rod 6 on the other side rotate synchronously but in opposite directions, thereby mixing and stirring the coal powder and combustion aid.

[0027] Specifically, after mixing is complete, the sliding telescopic shaft 9 is slid downwards, causing the secondary gear 10 to move downwards. As the secondary gear 10 moves downwards, it squeezes the two main gears 8, causing them to slide away from each other. Thus, the two main gears 8 no longer mesh directly. The secondary gear 10 meshes with both main gears 8 simultaneously. Therefore, when the motor 5 is started and the spiral stirring rod 6 on one side is rotated, it will drive the spring universal joint 7 on the other side and the spiral stirring rod 6 on the other side to rotate synchronously and in the same direction. This will drive the mixed coal powder forward. Then, the discharge pipe 4 is opened to quickly unload the mixed coal powder. When the sliding telescopic shaft 9 and the secondary gear 10 move upwards and reset, the two main gears 8 reset and re-mesh under the rebound force of the two spring universal joints 7, allowing the two spiral stirring rods 6 to continue mixing.

[0028] When the two main gears 8 slide in directions away from each other, the two spring universal joints 7 will bend in directions away from each other. Therefore, the spring universal joints 7 can ensure that the two spiral stirring rods 6 can still transmit power to each other even after the position of the main gears 8 changes.

[0029] See Figure 2 and Figure 3 A motor 5 is fixedly connected to the rear of the mixing body 1, and the output shaft of the motor 5 is fixedly connected to the spiral mixing rod 6 on one side.

[0030] See Figure 4 The two main gears 8 mesh with each other, and the auxiliary gear 10 is located between the tops of the two main gears 8.

[0031] See Figure 4 The front of the two main gears 8 is provided with a support plate 11, and the two main gears 8 are slidably connected to the rear of the support plate 11. The auxiliary gear 10 is also slidably connected to the rear of the support plate 11.

[0032] See Figure 4 and Figure 5 Support rod 13 and support rod 2 16 are provided on both sides of the rear part of the support plate 11. The support rod 13 and support rod 2 16 are arranged in a cross pattern. Sliding sliders 12 are slidably connected to both sides of the rear part of the support plate 11 near the top. Sliding sliders 12 are also slidably connected to both sides of the front part of the mixing body 1 near the bottom. A pair of fixing blocks 14 are fixedly connected to both sides of the rear part of the support plate 11 near the bottom. A pair of fixing blocks 14 are also fixedly connected to both sides of the front part of the mixing body 1 near the top. The two ends of support rod 13 are rotatably connected to the two sliders 12 respectively. The two ends of support rod 2 16 are rotatably connected to the two pairs of fixing blocks 14 respectively. A through rod 15 is connected through the center of support rod 13 and support rod 2 16.

[0033] When the two main gears 8 slide in a direction away from each other, the two spring universal joints 7 will bend, causing the two main gears 8 to move towards the front of the stirring body 1, thereby driving the support plate 11 to move and the sliding telescopic shaft 9 to retract. During this process, the support rod 13 and the support rod 2 16 move in a scissor-like manner. Therefore, through the cooperation of the support rod 13, the support rod 2 16 and the support plate 11, the main gears 8 can be supported, and the movement of the main gears 8 can be restricted to a straight line during the forward and backward movement.

[0034] See Figure 5 A fixed plate 17 is fixedly connected to the front of the mixing body 1 near the top. A cylinder 18 is fixedly connected to the top of the fixed plate 17. Starting the cylinder 18 can drive the sliding telescopic shaft 9 to move down, thereby driving the secondary gear 10 to move down as well.

[0035] See Figure 5 The output shaft of cylinder 18 passes through the bottom of fixed plate 17 and is fixedly connected to sliding telescopic shaft 9, and the top of support plate 11 is slidably connected to the bottom of fixed plate 17.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal powder stirring device, comprising a stirring body (1), a feeding pipe (2) is fixedly connected through the inside of the top of the stirring body (1), and a discharging pipe (4) is fixedly connected through the inside of the bottom of the stirring body (1), characterized in that: The inside of the stirring main body (1) is symmetrically connected with two spiral stirring rods (6), the front part of the stirring main body (1) is provided with a switching structure (3), the switching structure (3) comprises a sliding telescopic shaft (9) and a sub gear (10), one end of the two spiral stirring rods (6) is fixedly connected with a spring universal joint (7) penetrating through the front part of the stirring main body (1), one end of the two spring universal joints (7) is fixedly connected with a main gear (8), the sliding telescopic shaft (9) is slidingly connected to the front part of the stirring main body (1), and the sub gear (10) is fixedly connected with one end of the sliding telescopic shaft (9).

2. The coal powder stirring device according to claim 1, characterized in that: The rear part of the stirring main body (1) is fixedly connected with a motor (5), and the output shaft of the motor (5) is fixedly connected with the spiral stirring rod (6) on one side.

3. The coal powder mixing device according to claim 1, characterized in that: The two main gears (8) are meshed with each other, and the sub gear (10) is located between the top parts of the two main gears (8).

4. The coal powder mixing device according to claim 1, characterized in that: The front parts of the two main gears (8) are provided with a supporting plate (11), the two main gears (8) are slidingly connected with the rear part of the supporting plate (11), and the sub gear (10) is also slidingly connected with the rear part of the supporting plate (11).

5. The coal powder mixing device according to claim 4, characterized in that: The rear part of the supporting plate (11) is provided with a supporting rod one (13) and a supporting rod two (16) on both sides, the supporting rod one (13) and the supporting rod two (16) are arranged in a cross manner, the rear part of the supporting plate (11) is slidingly connected with a sliding block (12) on both sides of the top, and the front part of the stirring main body (1) is also slidingly connected with a sliding block (12) on both sides of the bottom, the rear part of the supporting plate (11) is fixedly connected with a pair of fixed blocks (14) on both sides of the bottom, and the front part of the stirring main body (1) is also fixedly connected with a pair of fixed blocks (14) on both sides of the top, the two ends of the supporting rod one (13) are rotatably connected with the two sliding blocks (12), the two ends of the supporting rod two (16) are rotatably connected with the two pairs of fixed blocks (14), and the center of the supporting rod one (13) and the supporting rod two (16) is connected with a through rod (15).

6. The coal powder mixing device according to claim 5, characterized in that: The front part of the stirring main body (1) is fixedly connected with a fixed plate (17) on the top, and the top of the fixed plate (17) is fixedly connected with an air cylinder (18).

7. The coal powder mixing device according to claim 6, characterized in that: The output shaft of the air cylinder (18) penetrates the bottom of the fixed plate (17) and is fixedly connected with the sliding telescopic shaft (9), and the top of the supporting plate (11) is slidingly connected with the bottom of the fixed plate (17).

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