A smut conveying device and conveying system

Abstract

The utility model provides a kind of smut conveying device and conveying system, smut conveying device includes hopper, groove, drive mechanism and three-section spiral structure, hopper bottom is equipped with along the horn mouth of extension in conveying axial direction;Groove one end top is equipped with with the horn mouth bottom size matching feed inlet, and with the hopper connection;Drive mechanism output end is connected with the spiral main shaft extending to groove inside side;Three-section spiral structure includes being arranged in spiral main shaft and sequentially increasing along axial pitch helical blade.This utility model has extended effective discharging axial length by horn mouth, provides longer buffer area, disperses incoming material impact, guides and converges material, avoids the jamming caused by flow stagnation at right angle or steep corner, provides stable, uniform feeding for downstream spiral, cooperates three-section spiral structure to provide stable conveying, pre-crushing is carried out to material in crushing section, reduces the jamming probability of spiral conveying process.

Description

Technical Field

[0001] This utility model relates to the field of powder conveying technology, specifically to a black powder conveying device and conveying system. Background Technology

[0002] In industries such as chemicals and new energy materials, carbon black and certain metal powders are commonly packaged in ton bags. During production, the broken-packed carbon black raw materials need to be fed into a silo and transferred to the next process, such as a ball mill, via a screw conveyor to disperse and grind them, preventing blockages in subsequent pneumatic conveying. For example, Chinese Patent 202510200763.9 discloses a multi-channel pneumatic conveying system for waste lithium battery carbon black, including a combination mechanism for assembling and connecting multiple pipes; a conveying mechanism for transporting the carbon black, with an inlet pipe fixedly installed at the top; a diversion mechanism for diverting and conveying the airflow; and an anti-agglomeration mechanism to prevent the carbon black from agglomerating, thus addressing the agglomeration problem in the conveying pipeline.

[0003] Black powder material itself has the characteristics of easy adsorption and agglomeration. After the black powder ton bags are broken, a screw conveyor needs to be set up to control the flow rate and speed of material transportation to avoid directly injecting it into the ball mill and causing excessive load on the ball mill. However, during storage, transportation and ton bag unloading, due to changes in ambient temperature and humidity and the physicochemical properties of the material itself, black powder easily absorbs moisture or agglomerates, forming clumps of varying sizes. After these black powder clumps fall into the silo, they easily cause obstruction at the feed inlet of the screw conveyor and in the screw conveyor trough, affecting the stability of the conveying. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a black powder conveying device and conveying system to solve the technical problem that in the prior art, after black powder agglomerated material falls into the silo, it is easy to form obstruction at the feed inlet of the screw conveyor and in the screw conveying trough, which affects the stability of conveying.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a black powder conveying device, comprising: The hopper has a flared opening at its bottom that extends along the conveying axis; The trough has a feed inlet at one end of its top that matches the size of the bottom of the flared mouth, and is connected to the hopper; The drive mechanism has an output end connected to a helical spindle extending into the inside of the tank; and The three-section spiral structure includes spiral blades arranged on the spiral main shaft with increasing pitch along the axial direction, dividing the tank into a feeding section, a crushing section and a homogenizing section along the axial direction. The tank is equipped with a fixed blade mechanism located in the crushing section, and the spiral blades are equipped with a moving blade mechanism located in the crushing section, which intersects with the fixed blade mechanism to form a shearing pair.

[0006] In some embodiments, the fixed-blade mechanism includes multiple sets of fixed-blade blocks that are detachably mounted on the inner wall of the groove along the axial direction of the spiral spindle.

[0007] In some embodiments, the moving blade mechanism includes multiple sets of crushing blades that are helically misaligned along the axial direction of the helical spindle and detachably mounted thereon.

[0008] In some embodiments, the tank is provided with a first cover plate, a second cover plate and a third cover plate, which are detachably connected to the feeding section, the crushing section and the homogenizing section, respectively.

[0009] In some embodiments, the flared opening includes a fixed housing, a movable housing, and an adjustment mechanism. The fixed housing is fixedly connected to the trough, and the movable housing is slidably connected to the outside of the fixed housing, so that the movable housing moves along the discharge direction to extend the axial length of the flared opening.

[0010] In some embodiments, the adjustment mechanism includes a first outer frame, a second outer frame, positioning bolts and nuts. The first outer frame and the second outer frame are provided with a plurality of positioning holes at equal intervals. The plurality of positioning bolts pass through the vertically aligned positioning holes and are threadedly connected to the corresponding nuts. The first outer frame is connected to the moving housing, and the second outer frame is connected to the fixed housing.

[0011] In some embodiments, a sealing gasket is provided on the side of the first extension frame opposite to the second extension frame.

[0012] In some embodiments, an arch-breaking mechanism is further included, which is disposed on the spiral spindle and arranged at the front end of the feeding section, for rotating with the spiral spindle and forming an arch-breaking mechanism for the material at the feed inlet.

[0013] In some embodiments, the arch-breaking mechanism includes a plurality of arch-breaking straight rods arranged in a spiral and connected to the spiral main shaft.

[0014] Secondly, this utility model also provides a conveying system, including a black powder conveying device, a feeding hopper, a ball mill, and a pneumatic conveying pipeline as described in any of the above. The feeding hopper, the black powder conveying device, the ball mill, and the pneumatic conveying pipeline are connected in sequence to sequentially feed, convey, disperse and disperse agglomerates, further break up agglomerates, and transfer materials.

[0015] Compared with the prior art, the black powder conveying device provided by this utility model extends the effective axial length of the feed through the flared mouth, providing a longer buffer area, dispersing the impact of incoming materials, guiding and converging materials, avoiding blockage caused by flow stagnation at right angles or steep corners, providing stable and uniform feeding for the downstream screw, and providing stable conveying in conjunction with the three-section screw structure. The material is pre-crushed in the crushing section, reducing the probability of blockage in the screw conveying process and reducing the working pressure of the subsequent ball mill. Attached Figure Description

[0016] Figure 1 This is the black powder conveying device provided in this embodiment of the utility model; Figure 2 This is the black powder conveying device provided in this embodiment of the utility model; Figure 3 This is a black powder conveying device provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Hopper; 11. Trumpet mouth; 111. Fixed shell; 112. Moving shell; 113. Adjustment mechanism; 113a. First outer extension frame; 113b. Second outer extension frame; 113c. Positioning bolt; 113d. Nut; 101. Positioning hole; 2. Tank body; 201. Inlet; 202. First cover plate; 203. Second cover plate; 204. Third cover plate; 205. Outlet; 3. Drive mechanism; 301. Screw spindle; 4. Three-section spiral structure; 41. Spiral blades; 42. Fixed blade mechanism; 421. Fixed blade block; 43. Moving blade mechanism; 431. Crushing blade teeth; 401. Feeding section; 402. Crushing section; 403. Homogenization section; 5. Arch-breaking mechanism; 51. Arch-breaking straight rod; 100. Black powder conveying device; 200. Feeding hopper; 300. Ball mill; 400. Pneumatic conveying pipeline. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the technical problem of black powder agglomerated material easily causing blockages at the feed inlet and within the screw conveyor trough after falling into the hopper, thus affecting the stability of conveying, this utility model provides a black powder conveying device and system. It extends the effective axial length of the discharge through a funnel-shaped opening, providing a longer buffer zone to disperse incoming material impact, guide and gather the material, and avoid blockages caused by flow stagnation at right angles or steep turns. This provides stable and uniform feeding to the downstream screw conveyor. Combined with a three-section screw structure, it provides stable conveying. Pre-crushing of the material in the crushing section reduces the probability of blockage during screw conveying and alleviates the working pressure on the subsequent ball mill.

[0020] It should be noted that the black powder conveying device described in this utility model is used for, but not limited to, battery black powder. For ease of explanation, this utility model only uses the application of the black powder conveying device to battery black powder as an example. The principle of the black powder conveying device applied to other types of equipment is essentially the same as that applied to battery black powder, and will not be described in detail here.

[0021] Please see Figure 1-3This utility model provides a black powder conveying device, which includes a hopper 1, a trough 2, a drive mechanism 3, and a three-section spiral structure 4. The bottom of the hopper 1 has a flared opening 11 extending along the conveying axis. Its four walls smoothly taper inward and downward at a certain angle. This inclined wall plays a crucial guiding role, smoothly guiding the material to the spiral shaft below, rather than allowing the material to fall freely. The smoothly narrowing slope allows the material to slide smoothly down by its own weight, avoiding flow stagnation at right angles or steep turns. As the material slides down the slope, it is slightly compressed and guided, gradually becoming denser from a loose state. This helps to expel air and allows it to enter the gripping area of ​​the spiral blades more smoothly. The top of one end of the trough 2 has a feed inlet 201 matching the size of the bottom of the flared opening 11, and is connected to the hopper 1. The output end of the drive mechanism 3 is connected to a spiral main shaft 301 extending to the inside of the trough 2. The drive mechanism 3 is a drive motor and its transmission components, which is existing technology. The three-section spiral... The spiral structure 4 includes spiral blades 41 disposed on the spiral main shaft 301 with progressively increasing pitch along the axial direction, dividing the trough 2 into a feeding section 401, a crushing section 402, and a homogenizing section 403 along the axial direction. The small pitch of the feeding section 401 grips and initially compacts the material, ensuring stable and uniform material intake from the bell mouth, providing stable material feeding conditions for the crushing section. The pitch of the crushing section 402 is greater than that of the feeding section 401 and less than or equal to that of the homogenizing section 403, providing the necessary residence time. The medium pitch allows the material to... The crushing section has a slightly slower advance speed, which ensures that the agglomerated material has enough time to be exposed to the shearing action of the moving and fixed blades, thereby being effectively dispersed. The homogenization section 403 can quickly transport the dispersed and free-flowing material to the discharge port 205. The trough 2 is equipped with a fixed blade mechanism 42 located in the crushing section 402, and the spiral blade 41 is equipped with a moving blade mechanism 43 located in the crushing section 402. The moving blade mechanism 43 and the fixed blade mechanism 42 are intersected to form a shearing pair, which forms a pre-crushing of the agglomerated black powder during the conveying process.

[0022] Specifically, please refer to Figure 1 and Figure 2 In order to form a shearing pair with the moving blade mechanism 43, the fixed blade mechanism 42 includes multiple sets of fixed blade blocks 421 that are detachably installed on the inner wall of the groove 2 along the axial direction of the spiral main shaft 301. In addition, the moving blade mechanism 43 includes multiple sets of crushing blades 431 that are spirally misaligned along the axial direction of the spiral main shaft 301 and detachably installed thereon.

[0023] It is understandable that both the fixed blade block 421 and the detachable crushing blade tooth 431 can be installed by bolt fixing, and this is not the only option.

[0024] In one embodiment, please refer to Figure 1 and Figure 2In order to facilitate the inspection and maintenance of each conveying section, the trough 2 is provided with a first cover plate 202, a second cover plate 203 and a third cover plate 204, which are detachably connected to the feeding section 401, the crushing section 402 and the homogenizing section 403 respectively.

[0025] In one embodiment, please refer to Figure 1 and Figure 2 Different batches and sources of black powder materials may have different particle sizes, moisture content, and viscosity. A fixed funnel opening may work well for one batch of materials, but be too small for another batch that is more moist and prone to clumping, and vice versa. To adjust the funnel opening 11 according to different batches of black powder raw materials, the funnel opening 11 includes a fixed housing 111, a movable housing 112, and an adjustment mechanism 113. The fixed housing 111 is fixedly connected to the tank 2, and the movable housing 112 is slidably connected to the outside of the fixed housing 111, allowing the movable housing 112 to move along the discharge direction to extend the axial length of the funnel opening 11. This provides a longer buffer and anti-bridging area, allowing more time for the material to be loosened, which is particularly suitable for the most difficult-to-handle materials.

[0026] Specifically, the adjustment mechanism 113 includes a first outer frame 113a, a second outer frame 113b, positioning bolts 113c, and nuts 113d. The first outer frame 113a and the second outer frame 113b have a plurality of positioning holes 101 equidistantly spaced. The positioning bolts 113c pass through the vertically aligned positioning holes 101 and are threadedly connected to the corresponding nuts 113d. The first outer frame 113a is connected to the moving housing 112, and the second outer frame 113b is connected to the fixed housing 111. By moving the moving housing 112, the overlapping area between it and the fixed housing 111 is adjusted, thereby adjusting the space of the flared opening 11 inside. During adjustment, the first outer frame 113a is moved so that its positioning holes 101 align with the corresponding positioning holes 101 on the second outer frame 113b after the movement, and then the positioning bolts 113c and nuts 113d are used to lock the alignment.

[0027] In this case, a sealing gasket is provided on the side of the first outer frame 113a opposite to the second outer frame 113b, and the sealing gasket seals the gap.

[0028] In one embodiment, please refer to Figure 1 and Figure 2 In order to break up arches at the feeding position and prevent blockage at the feeding position, an arch-breaking mechanism 5 is also included. It is set on the spiral spindle 301 and arranged at the front end of the feeding section 401. It is used to rotate with the spiral spindle 301 and form an arch-breaking mechanism for the material at the feeding port 201, thereby improving the smoothness of feeding.

[0029] Specifically, the arch-breaking mechanism 5 includes several arch-breaking straight rods 51 arranged spirally and connected to the spiral main shaft 301. The rotation of the spiral main shaft 301 drives the arch-breaking straight rods 51 to rotate, causing them to break up the arches in the material. Under the continuous action of the arch-breaking straight rods 51, the residual material in the leafless segment is always in a stirred and loose state. It is not a hard, stable blockage layer, but a dynamic, constantly changing buffer layer. This part of the material will slowly move downwards under the action of gravity, while the material above continuously replenishes it, forming a flexible transition. Through the shape of the funnel mouth 11 and the arrangement of the arch-breaking straight rods 51, the residual area is limited to a minimum, ensuring that this is an area where material is constantly changing, rather than an area where material stagnates and clumps together.

[0030] To better understand this utility model, the following is combined with... Figures 1 to 2 The technical solution of this utility model is described in detail as follows: After the black powder is broken from the ton bag, it falls into the funnel mouth 11 at the top of the system, which disperses and buffers the impact force of the material and guides the material flow to the entire working area, avoiding instantaneous accumulation from the source. In the bladeless section below the funnel mouth 11, the arch-breaking straight rod 51, which rotates at high speed with the main shaft, directly and actively breaks up the material arch that may be formed at the feed inlet through impact and vibration. The material that has passed through the arch breaking section is immediately captured by the small-pitch spiral blades of the feed section 401. The stabilized material flow enters the crushing section 402, where the moving blades and the fixed blades fixed on the inner wall of the cavity intersect to form a high-speed shearing pair, forming pre-crushing of agglomerates, and then conveyed to the homogenization section 403 and discharged from the discharge port 205.

[0031] This utility model also provides a conveying system, please refer to [link / reference]. Figure 3 To connect feeding, conveying, ball milling and pneumatic conveying, a conveying system is provided. The conveying system includes a black powder conveying device 100 as described in any of the above, and also includes a feeding hopper 200, a ball mill 300 and a pneumatic conveying pipeline 400. The feeding hopper 200, the black powder conveying device 100, the ball mill 300 and the pneumatic conveying pipeline 400 are connected in sequence to sequentially feed, convey and disperse agglomerates, further break up agglomerates and transfer materials.

[0032] Understandably, the ball mill 300 receives pre-treated, uniform powder, significantly reducing its workload. It can then focus on fine grinding, resulting in lower energy consumption, increased efficiency, and reduced wear. The material after grinding in the ball mill 300 is pneumatically conveyed through the pneumatic conveying pipeline 400, effectively preventing blockages.

[0033] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A black powder conveying device, characterized in that, include: The hopper has a flared opening at its bottom that extends along the conveying axis; The trough has a feed inlet at one end of its top that matches the size of the bottom of the flared mouth, and is connected to the hopper; The drive mechanism has an output end connected to a helical spindle extending into the inside of the tank; and The three-section spiral structure includes spiral blades arranged on the spiral main shaft with increasing pitch along the axial direction, dividing the tank into a feeding section, a crushing section and a homogenizing section along the axial direction. The tank is equipped with a fixed blade mechanism located in the crushing section, and the spiral blades are equipped with a moving blade mechanism located in the crushing section, which intersects with the fixed blade mechanism to form a shearing pair.

2. The black powder conveying device according to claim 1, characterized in that, The fixed-blade mechanism includes multiple sets of fixed-blade blocks that are detachably installed on the inner wall of the groove along the axial direction of the spiral spindle.

3. The black powder conveying device according to claim 1, characterized in that, The moving blade mechanism includes multiple sets of crushing blades that are spirally offset along the axial direction of the spiral main shaft and detachably mounted thereon.

4. The black powder conveying device according to claim 1, characterized in that, The tank is provided with a first cover plate, a second cover plate and a third cover plate, which are detachably connected to the feeding section, the crushing section and the homogenization section respectively.

5. The black powder conveying device according to claim 1, characterized in that, The flared opening includes a fixed housing, a movable housing, and an adjustment mechanism. The fixed housing is fixedly connected to the trough, and the movable housing is slidably connected to the outside of the fixed housing, so that the movable housing moves along the discharge direction to extend the axial length of the flared opening.

6. The black powder conveying device according to claim 5, characterized in that, The adjustment mechanism includes a first outer frame, a second outer frame, positioning bolts and nuts. The first outer frame and the second outer frame are provided with a plurality of positioning holes at equal intervals. The plurality of positioning bolts pass through the vertically aligned positioning holes and are threadedly connected to the corresponding nuts. The first outer frame is connected to the moving housing, and the second outer frame is connected to the fixed housing.

7. The black powder conveying device according to claim 6, characterized in that, A sealing gasket is provided on the side of the first outer frame opposite to the second outer frame.

8. The black powder conveying device according to claim 1, characterized in that, It also includes an arch-breaking mechanism, which is mounted on the spiral spindle and arranged at the front end of the feeding section, for rotating with the spiral spindle and forming an arch-breaking mechanism for the material at the feed inlet.

9. The black powder conveying device according to claim 8, characterized in that, The arch-breaking mechanism includes several arch-breaking straight rods arranged in a spiral and connected to the spiral main shaft.

10. A conveying system, characterized in that, It includes a black powder conveying device, a feeding hopper, a ball mill, and a pneumatic conveying pipeline as described in any one of claims 1-9. The feeding hopper, the black powder conveying device, the ball mill, and the pneumatic conveying pipeline are connected in sequence to sequentially feed, convey, disperse and disperse agglomerates, further break up agglomerates, and transfer materials.

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