A device for cleaning powder accumulated in a bend of a duct of a pulverizing system

Abstract

The utility model relates to a powder manufacturing system technical field especially, more particularly to a kind of powder manufacturing system air pipe elbow powder accumulation cleaning device, including the air pipe elbow of being composed of horizontal pipeline, vertical pipeline and bending part;It further includes sheath, sheath is encased in the outside of air pipe elbow, and cavity is formed between the two;The end of bending part away from center is provided with the notch one of arc shape;On the corresponding position of notch one, sheath is provided with the notch two of arc shape;Cavity between notch one and notch two is provided with shielding piece, shielding piece can slide along the arc surface of bending part, shielding piece always covers notch one when sliding, and shielding piece is installed with crushing mechanism;Its simple structure, partially reform air pipe elbow, increase powder accumulation cleaning range, improve cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of powder making system technology, and in particular to a powder cleaning device for the elbow of a powder making system duct. Background Technology

[0002] In pulverizing systems of industries such as thermal power generation, metallurgy, and chemicals, pneumatic conveying pipelines play a crucial role in the continuous transport of pulverized coal and other materials. Among these pipelines, bends, due to their altered airflow direction, become the weakest points in the entire system most prone to material deposition and accumulation. When airflow carrying powder passes through bends, it easily adheres and stagnates, forming powder deposits. If these deposits are not cleaned promptly and effectively, they will harden and solidify over time due to changes in temperature and humidity, or their own inherent properties, transforming from an initially loose state into a hard, adhered layer.

[0003] Currently, the common methods for cleaning dust accumulation in elbows include manual tapping after machine shutdown, high-pressure air blowing, or installing fixed vibrators. These traditional methods have significant drawbacks: manual cleaning is inefficient and unsafe; pneumatic blowing is almost ineffective against hardened dust layers; and fixed cleaning devices have a limited range of action, leaving many cleaning dead zones and failing to cover all dust-prone areas within the elbow.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This utility model provides a dust removal device for the bend of a duct in a pulverizing system, which can effectively solve the problems in the background art. It has a simple structure, which modifies a part of the bend of the duct to increase the dust removal range and improve the cleaning effect.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A powder cleaning device for a duct elbow of a powder making system includes a duct elbow composed of a horizontal pipe, a vertical pipe and a bend; it also includes a protective sleeve, which is fitted over the outside of the duct elbow, forming a cavity between the two. An arc-shaped notch one is provided at the end of the bent part away from the center; at the corresponding position of notch one, an arc-shaped notch two is provided on the sheath; A blocking component is installed in the cavity between notch one and notch two. The blocking component can slide along the arc surface of the bend. The blocking component always covers notch one when it slides. The blocking component is equipped with a crushing mechanism.

[0007] Furthermore, the shielding component is made of a material that possesses both structural flexibility and load-bearing rigidity.

[0008] Furthermore, a blocking element is fixed at the end of the cavity to prevent the blocking element from leaving the cavity.

[0009] Furthermore, the curvature of gap one and gap two is between 45° and 90°.

[0010] Furthermore, the crushing mechanism includes: The mounting ring is embedded in the shielding component, and a sliding plate is slidably connected inside it; The sliding plate is rotatably connected to a rotating shaft with a cutter head, and the rotating shaft is driven to rotate by a motor fixed on the sliding plate; The telescopic mechanism, fixed to the mounting ring, is used to drive the sliding plate to slide.

[0011] Furthermore, the crushing mechanism also includes: A rotary joint is fixed on a sliding plate. The rotating shaft is a hollow structure, and a nozzle is connected to the end of the rotating shaft near the cutter head. The rotary joint is rotatably connected to the rotating shaft. The air inlet end of the rotary joint is connected to a flexible hose.

[0012] Furthermore, the sheath has threaded connections with bolts for fixing the position of the shield.

[0013] Furthermore, scrapers are fixed at both ends of the notch near the shielding component.

[0014] The technical solution of this utility model can achieve the following technical effects: By applying force to the shielding component manually or otherwise, it slides along the outer arc surface of the duct elbow, and at the same time, the crushing mechanism on it is activated. Throughout the sliding stroke, the shielding component dynamically seals the gap, effectively isolating the internal dust. Meanwhile, the following crushing mechanism continuously crushes the accumulated dust on the inner wall of the duct elbow. In the above process, the cleaning method changes from traditional local fixed-point treatment to linear continuous coverage of the dust accumulation area inside the elbow, which greatly increases the cleaning range and improves the cleaning effect. Attached Figure Description

[0015] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a dust removal device for duct bends in a pulverizing system. Figure 2 A cross-sectional view of a dust removal device for the elbow of a pulverizing system duct. Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a structural diagram of horizontal pipes, vertical pipes, bends, and sheaths; Figure 5 This is a structural diagram of horizontal pipes, vertical pipes, bends, fillers, blocking components, and sheaths; Reference numerals: 1. Horizontal pipe; 2. Vertical pipe; 3. Bend; 4. Sheath; 5. Cavity; 6. Notch 1; 7. Notch 2; 8. Shielding component; 9. Crushing mechanism; 91. Mounting ring; 92. Sliding plate; 93. Cutter head; 94. Rotating shaft; 95. Motor; 96. Telescopic mechanism; 97. Rotary joint; 98. Nozzle; 49. Hose; 10. Blocking component; 11. Bolt; 12. Scraper; 13. Filling section. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] This application provides a device for cleaning accumulated powder at the elbow of a pulverizing system duct, referring to... Figures 1-5 It includes a duct elbow consisting of a horizontal pipe 1, a vertical pipe 2, and a bend 3; it also includes a sheath 4, which is fitted over the outside of the duct elbow, forming a cavity 5 between the two. More specifically, the sheath 4 adopts a split structure, which is fixed by several sub-components through flanges or welding. The thickness is consistent throughout the cavity 5. The sheath 4 covers part of the horizontal pipe 1 and the vertical pipe 2 as well as all the bends 3. An arc-shaped notch 6 is provided at the end of the bend 3 away from the center. More specifically, the notch 6 is an arc-shaped opening that is directly processed on the outer wall of the duct bend along its natural curvature using plasma cutting or laser cutting technology. At the corresponding position of the notch 6, the sheath 4 has an arc-shaped notch 7. A blocking member 8 is provided in the cavity 5 between notch 1 6 and notch 2 7. The blocking member 8 can slide along the arc surface of the bent part 3. The blocking member 8 always covers notch 1 6 when it slides. Preferably, in order to prevent powder leakage when the shielding part 8 slides on the arc track, a wear-resistant flexible sealing lip can be provided on the edge of the shielding part 8, and the elasticity of the material can be used to make it always stick to the inner wall of the duct elbow to form a seal. The shielding component 8 is equipped with a crushing mechanism 9; The specific working process of this device is as follows: By manually or otherwise applying force to the shielding component 8, it slides along the outer arc surface of the duct elbow, and at the same time, the crushing mechanism 9 on it is activated. Throughout the sliding stroke, the shielding component 8 dynamically seals the notch 6, effectively isolating the internal dust. Meanwhile, the following crushing mechanism 9 continuously crushes the accumulated dust on the inner wall of the duct elbow. In the above process, the cleaning method changes from traditional local fixed-point treatment to linear continuous coverage of the dust accumulation area inside the elbow, which greatly increases the cleaning range and improves the cleaning effect.

[0020] As a preferred embodiment of the above, the shielding member 8 is made of a material that simultaneously possesses structural flexibility and load-bearing rigidity; In this embodiment, the shielding member 8 is made of fiber-reinforced rubber or thermoplastic polyester elastomer. The structural flexibility allows the shielding member 8 to fit tightly against the arc-shaped inner wall of the elbow, maintaining a dynamic seal during sliding and effectively preventing dust from entering the transmission cavity 5. The load-bearing rigidity provides a stable installation foundation and a solid force transmission path for the integrated crushing mechanism 9, enabling the torque and impact force generated by the motor 95 to effectively act on the accumulated powder.

[0021] As a preferred embodiment of the above, refer to Figure 2 The end of the cavity 5 is fixed with a blocking member 10 for preventing the blocking member 8 from leaving the cavity 5; In this embodiment, the blocking member 10 consists of two rings connected to the duct elbow. Through a simple mechanical limiting structure, the blocking member 8 is effectively prevented from exposing the gap 6 during movement.

[0022] As a preferred embodiment of the above, the curvature of notch 6 and notch 7 is between 45° and 90°; More specifically, a filling part 13 is provided on the inner wall of the cavity 5 to reduce the movement range of the shielding member 8. By reducing the cavity 5, the purpose of preventing the shielding member 8 from exposing the gap 6 when it moves is achieved. In this embodiment, the movement range of the shielding member 8 is limited by restricting the curvature of notch 1 6 and notch 2 7 to between 45 and 90 degrees and by providing the filling part 13, so as to avoid the problem of notch 1 6 being exposed due to excessive movement range. If the curvature is too small, it will be not conducive to the installation of the crushing mechanism 9. Therefore, the curvature of notch 1 6 and notch 2 7 is limited to between 45 and 90 degrees.

[0023] As a preferred embodiment of the above, refer to Figure 1 and Figure 3 The crushing mechanism 9 includes: Mounting ring 91 is embedded in the shield 8, and a sliding plate 92 is slidably connected inside it; The sliding plate 92 is rotatably connected to a rotating shaft 94 with a cutter head 93. The rotating shaft 94 is driven to rotate by a motor 95 fixed on the sliding plate 92. The motor 95 drives the rotating shaft 94 to rotate through a synchronous belt and other devices. The telescopic mechanism 96 is fixed to the mounting ring 91. The telescopic mechanism 96 is used to drive the sliding plate 92 to slide. The telescopic mechanism 96 can be made of air pipe, hydraulic cylinder or electric telescopic rod, etc. In this embodiment, the telescopic mechanism 96 drives the sliding plate 92 to slide inward along the mounting ring 91, so that the rotating shaft 94 with the cutter head 93 extends radially into the inside of the duct elbow; after the motor 95 starts and drives the rotating shaft 94 to rotate at high speed, the cutter head 93 crushes the accumulated powder; then the telescopic mechanism 96 can dynamically adjust the extension amount of the sliding plate 92, so that the cutter head 93 can adapt to the powder layers of different thicknesses while rotating continuously, and achieve layer-by-layer crushing; when the shielding member 8 slides along the arc surface of the elbow, the crushing mechanism 9 completes the cleaning of other positions on the inner wall of the duct elbow through the combined motion of rotational cutting and radial feeding.

[0024] As a preferred embodiment of the above, refer to Figure 3 The crushing mechanism 9 also includes: A rotary joint 97 is fixed on a sliding plate 92. A hollow shaft 94 is connected to a nozzle 98 at one end of the shaft 94 near the cutter head 93. The rotary joint 97 is rotatably connected to the shaft 94. The air inlet end of the rotary joint 97 is connected to a flexible hose 49; In this embodiment, during the operation of the crushing mechanism 9, compressed gas is delivered to the rotary joint 97 through the hose 49, and then enters the high-speed rotating hollow shaft 94, and finally is ejected from the nozzle 98 near the cutter head 93. While the airflow mechanically crushes the accumulated powder on the cutter head 93, it also blows the working area simultaneously. This not only blows the crushed powder into the main airflow in time to carry it away, preventing dust from accumulating around the cutter head 93 and affecting the cutting efficiency, but also cools the high-speed running cutter head 93 with air.

[0025] As a preferred embodiment of the above, refer to Figures 1-5 The sheath 4 is threaded with bolts 11 for fixing the position of the shield 8; In this embodiment, the shield 8 can be fixed in the parking position by setting bolts 11 to prevent shaking during the powder making operation.

[0026] Preferably, when the shielding member 8 is in the parking position, the mounting ring 91 is completely shielded by the duct bend to prevent the powder from damaging the components inside the crushing mechanism 9.

[0027] As a preferred embodiment of the above, refer to Figures 4-5 Scrapers 12 are fixed at both ends of the notch 6 near the side of the shield 8; In this embodiment, during the sliding movement of the shielding member 8, the scraper 12 can scrape off the powder on the inner wall of the shielding member 8, further improving the cleaning effect.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for a duct bend in a pulverizing system, comprising a duct bend consisting of a horizontal pipe (1), a vertical pipe (2), and a bend (3); characterized in that, It also includes a sheath (4), which is fitted onto the outside of the duct elbow, forming a cavity (5) between them; The bent portion (3) has an arc-shaped notch one (6) at the end away from the center; at the corresponding position of the notch one (6), the sheath (4) has an arc-shaped notch two (7). A shielding member (8) is provided in the cavity (5) between the first gap (6) and the second gap (7). The shielding member (8) can slide along the arc surface of the bent part (3). The shielding member (8) always covers the first gap (6) when sliding. The shielding member (8) is equipped with a crushing mechanism (9).

2. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, The shielding component (8) is made of a material that has both structural flexibility and load-bearing rigidity.

3. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, The end of the cavity (5) is fixed with a blocking member (10) for preventing the blocking member (8) from leaving the cavity (5).

4. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, The arc of the first gap (6) and the second gap (7) is between 45° and 90°.

5. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, The crushing mechanism (9) includes: Mounting ring (91), which is embedded in the shield (8), and a sliding plate (92) is slidably connected inside it; The sliding plate (92) is rotatably connected to a rotating shaft (94) with a cutter head (93), and the rotating shaft (94) is driven to rotate by a motor (95) fixed on the sliding plate (92); A telescopic mechanism (96) is fixed to the mounting ring (91), and the telescopic mechanism (96) is used to drive the sliding plate (92) to slide.

6. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 5, characterized in that, The crushing mechanism (9) further includes: A rotary joint (97) is fixed on the sliding plate (92). The rotating shaft (94) is a hollow structure. The end of the rotating shaft (94) near the cutter head (93) is connected to a nozzle (98). The rotary joint (97) is rotatably connected to the rotating shaft (94). The air inlet end of the rotary joint (97) is connected to a hose (49).

7. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, The sheath (4) is threaded with bolts (11) for fixing the position of the shield (8).

8. The powder accumulation cleaning device for the duct bend of the pulverizing system according to claim 1, characterized in that, Scrapers (12) are fixed at both ends of the notch (6) on the side near the shield (8).

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