Crust cleaning device for discharging pipeline of rotary kiln

Abstract

The utility model provides a crust cleaning device for a discharging pipeline of a rotary kiln, which belongs to the field of rotary kiln equipment and comprises a discharging pipe, a striker plate is arranged in the discharging pipe in an overturning manner, a rotating shaft is rotatably arranged on one side of the striker plate, a scraper capable of moving up and down is arranged on the rotating shaft, and the scraper is rotatably arranged in the discharging pipe. And the output end of the scraper drives the rotating shaft connected with the striker plate to rotate, so that the scraper on the rotating shaft cleans the inner wall of the discharging pipe while rotating, the scraped crust can drive the scraped material to turn over when the scraper rotates, and the material can slide down and be stored in a storage groove of the scraper when falling down. When stubborn materials exist, the air cylinder works, and the push rod at the output end of the air cylinder moves in the through hole of the rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln equipment, specifically to a device for cleaning scale buildup in the feed pipe of a rotary kiln. Background Technology

[0002] During the operation of rotary kiln equipment, the flap valve plays a crucial role as a key component controlling material feeding. However, a serious problem currently exists in flap valves – the formation of a crust.

[0003] Due to the high temperature and viscosity of the materials inside the rotary kiln, some material adheres to the baffle plate and the inner wall of the feed pipe of the flap valve as it passes through. Over time, these deposits accumulate and harden, forming a crust. The presence of this crust severely affects the normal operation of the flap valve: on the one hand, it hinders the smooth feeding of materials, leading to unstable feeding speed and affecting production efficiency; on the other hand, if the crust accumulates to a certain extent, it may prevent the baffle plate from rotating properly, thus causing the flap valve to malfunction and requiring frequent shutdowns for cleaning and maintenance.

[0004] Traditional cleaning methods rely primarily on manual labor, requiring operators to manually scrape off the scale with tools after the machine is shut down. This method is not only inefficient and has limited cleaning effectiveness, failing to completely remove the scale, but also increases labor costs and intensity. Furthermore, frequent shutdowns for cleaning disrupt continuous rotary kiln production, resulting in production losses. Utility Model Content

[0005] In view of this, the present invention provides a rotary kiln feed pipe scale cleaning device, which can be activated by a cylinder, a push rod pushes a scraper to impact the inner wall of the feed pipe, the vibration causes the scale to fall off, and the scraper can clean the scale on the inner wall of the feed pipe.

[0006] To address the aforementioned technical problems, this utility model provides a device for cleaning scale buildup in a rotary kiln feed pipe. A connecting rod rotatably mounted inside the feed pipe supports a baffle plate, allowing the baffle plate to rotate within the pipe, thereby preventing wind and rain and controlling material flow. A rotating shaft on one side of the baffle plate drives a scraper to rotate. The scraper, movable up and down and rotatably mounted inside the feed pipe, primarily functions to clean scale buildup on the inner wall of the feed pipe, preventing scale accumulation that could prevent the baffle plate from opening and affect the feed efficiency.

[0007] A bracket is installed at one end of the feed pipe to fix the drive motor. The output end of the drive motor is connected to the rotating shaft. After the drive motor starts, it drives the rotating shaft to rotate, which in turn causes the scraper to rotate inside the pipe, thus cleaning the scale.

[0008] A groove is provided inside the shaft at the end away from the drive motor. A through hole on one side of the groove, along with a cylinder and push rod inside the groove, cooperate with each other. When the cylinder is working, the push rod connected to its output end moves within the through hole. By controlling the extension and retraction of the push rod, the scraper can be moved away from the inner wall of the feed pipe. The back-and-forth extension and retraction causes the scraper to vibrate against the inner wall of the feed pipe, causing the material to fall.

[0009] Multiple openings on the rotating shaft are matched with connecting plates attached to the scraper, allowing the connecting plates to slide within the openings. This enables the scraper to make fine-tuned up and down movements as it rotates with the shaft, and allows the cylinder to push the scraper to vibrate, thus improving the cleaning effect.

[0010] The push rod has a frustum-shaped boss, and the scraper has an oblique notch. The frustum-shaped boss on the push rod slides in conjunction with the oblique notch on the scraper. When the push rod extends or retracts, the boss slides in the notch, causing the scraper to move up and down, so that the scraper can impact the inner wall of the feed pipe.

[0011] Multiple storage slots are set on the scraper. When the rotating shaft drives the scraper to rotate, it also drives the scraped-off crust to rotate. After the crust moves to a certain angle, it slides off the side wall of the scraper and into the storage slot, which prevents the crust from accumulating again in the pipe and ensures the smooth flow of the feed pipe.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. The rotating scraper cleans the scale buildup on the inner wall of the feed pipe, preventing the scale from obstructing the material, stabilizing the feeding speed, and ensuring efficient production. For stubborn scale buildup, the cylinder can drive the scraper to impact the inner wall of the feed pipe, making the scale fall off more easily.

[0014] 2. Timely cleaning of the crust can prevent its accumulation, avoid the baffle plate from failing to rotate properly, reduce the failure of the flap valve, and extend the service life of the equipment.

[0015] 3. The automatic cleaning equipment replaces manual removal, reducing labor costs and labor intensity, and eliminating the need for frequent machine downtime, thus reducing production losses. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a rotary kiln feed pipe scale cleaning device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present utility model AA;

[0019] Figure 4This is a cross-sectional structural diagram of the present utility model BB.

[0020] Explanation of reference numerals in the attached drawings: 100, feeding pipe; 101, connecting rod; 102, baffle plate; 103, rotating shaft; 104, scraper; 105, bracket; 106, drive motor; 107, groove; 108, through hole; 109, cylinder; 110, push rod; 111, opening; 112, connecting plate; 113, boss; 114, notch; 115, storage slot. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] like Figure 1-4 As shown:

[0023] This embodiment provides a device for cleaning scale buildup in a rotary kiln feed pipe. A rotating connecting rod 101 is installed inside the feed pipe 100, with one end of the connecting rod 101 connected to and supporting a baffle plate 102. The baffle plate 102 and the connecting rod 101 are connected by welding. Hammer rods are connected to both ends of the connecting rod 101, and a counterweight is provided at one end of each hammer rod. The counterweight presses the baffle plate 102 down against the inner wall of the feed pipe 100. When material slides down, the weight of the material counteracts the weight of the counterweight, causing the material to fall.

[0024] The scraper 104 is a key component for cleaning the discharge pipe 100. It is movable up and down and rotatably mounted inside the discharge pipe 100. The edge of the scraper 104 fits against the inner wall of the discharge pipe 100. The distance between the scraper 104 and the discharge pipe 100 can be adjusted by the push rod 110 pushed by the cylinder 109, so that the scraper 104 impacts the inner wall of the discharge pipe 100, ensuring a good cleaning effect. To fix the drive motor 106, a sturdy bracket 105 is installed at one end of the discharge pipe 100. The bracket 105 is fixed to the discharge pipe 100 by welding or bolts, ensuring the stability of the motor after installation. The drive motor 106 is a Y132S-4 model, which can meet the power required for the scraper 104 to clean. The output end of the motor is connected to the rotating shaft 103 through a coupling. This connection method can effectively transmit torque and reduce energy loss. When the drive motor 106 starts, the rotational force of the motor shaft is transmitted to the rotating shaft 103 through the coupling, which in turn drives the scraper 104 to rotate inside the pipe, thereby cleaning the scale that has formed on the inner wall of the feed pipe 100.

[0025] Inside the rotating shaft 103, located away from the drive motor 106, a groove 107 is formed. A through hole 108 is connected to one side of the groove 107. A cylinder 109 is installed within the groove 107. The air source inlet of the cylinder 109 is a rotary joint, allowing the cylinder 109 to rotate with the rotating shaft 103. The air source pipe is a high-temperature resistant metal pipe. A push rod 110 is movably disposed within the through hole 108. The cylinder 109 is fixedly connected to the bottom of the groove 107 via a flange. One end of the push rod 110 is connected to the output end of the cylinder 109, while the other end can move within the through hole 108. When the cylinder 109 operates, the push rod 110 extends and retracts within the through hole 108. By controlling the extension and retraction length of the push rod 110, the scraper 104 can be moved away from or closer to the inner wall of the discharge pipe 100. Through this back-and-forth extension and retraction, the scraper 104 vibrates the inner wall of the discharge pipe 100, promoting material fall.

[0026] To make the scraper 104 work more flexibly and efficiently, multiple openings 111 are designed on the rotating shaft 103, which are evenly distributed along the axial direction of the rotating shaft 103. The connecting plate 112 connected to the scraper 104 is adapted to the openings 111 on the rotating shaft 103. The connecting plate 112 can slide freely within the openings 111, and the boss 113 on the push rod 110 keeps the scraper 104 in contact with the inner wall of the discharge pipe 100. This allows the scraper 104 to be finely adjusted up and down while rotating with the rotating shaft 103, through the sliding of the connecting plate 112 within the openings 111. This facilitates the cylinder 109 to drive the scraper 104 to vibrate, improving the cleaning effect. The push rod 110 is provided with a frustum-shaped boss 113, and the scraper 104 is provided with an oblique notch 114. In addition, the frustum-shaped boss 113 on the push rod 110 and the oblique notch 114 on the scraper 104 are slidably engaged. When the push rod 110 extends or retracts, the boss 113 slides in the notch 114, which can drive the scraper 104 to move up and down, thereby impacting the inner wall of the feed pipe 100 and further cleaning the stubborn crust.

[0027] Multiple storage slots 115 are also provided on the scraper 104, and these storage slots 115 are evenly distributed on the surface of the scraper 104. When the rotating shaft 103 drives the scraper 104 to rotate, the scraped-off scale will rotate with the scraper 104. After the scale moves to a certain angle, it will slide off the side wall of the scraper 104 into the storage slot 115. This avoids the scale from accumulating again in the pipe and ensures the smooth flow of the feed pipe 100.

[0028] In addition to the existing drive motor 106, a hydraulic drive assembly can be added as a supplement. A hydraulic pump is connected to a hydraulic cylinder via a pipe, and the piston rod of the hydraulic cylinder is hinged to the rotating shaft 103. The hydraulic pump pressurizes hydraulic oil and delivers it to the hydraulic cylinder, pushing the piston rod to extend and retract, thereby rotating the rotating shaft 103. This hydraulic drive assembly has the advantages of fast response and convenient torque adjustment. When used in conjunction with a motor drive, it can be flexibly switched according to different working conditions, improving the overall efficiency and stability of the material discharge pipe 100 cleaning process.

[0029] Working principle: The drive motor 106 starts, and its output end drives the rotating shaft 103 connected to the baffle plate 102 to rotate. This causes the scraper 104 on the rotating shaft 103 to clean the inner wall of the feed pipe 100 while rotating. The scraped-off crust can be tumbled by the scraper 104 as it rotates, and can slide down and be stored in the storage groove 115 of the scraper 104. When there is stubborn material, the cylinder 109 is activated, and the push rod 110 at the output end of the cylinder 109 moves within the through hole 108 of the rotating shaft 103. Since the frustum-shaped boss 113 on the push rod 110 cooperates with the notch 114 on the scraper 104, when the push rod 110 moves, it pushes the scraper 104 to slide along the connecting plate 112 in the opening 111 of the rotating shaft 103, so that the scraper 104 collides with the inner wall of the feed pipe 100. The vibration causes the crust generated on the inner wall of the feed pipe 100 to fall off. The baffle plate 102 controls the material feeding under the action of the material's gravity and its own overturning mechanism.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A rotary kiln downcomer pipe skinning cleaning device, comprising a downcomer pipe (100), a connecting rod (101) is arranged to rotate in the downcomer pipe (100), and a baffle plate (102) is arranged on the connecting rod (101), characterized in that: The material blocking plate (102) is provided with a rotating shaft (103) on one side, the rotating shaft (103) is provided with a scraper (104) which can move up and down, and the scraper (104) is rotatably arranged in the feeding pipe (100).

2. A kiln downcomer skinning cleaning device as claimed in claim 1, characterised in that: One end of the feeding pipe (100) is provided with a support (105), the support (105) is connected with a driving motor (106), and the output end of the driving motor (106) is connected with the rotating shaft (103).

3. A kiln downcomer skinning cleaning device as claimed in claim 2, characterised in that: The rotating shaft (103) is provided with a groove (107) at the end away from the driving motor (106), the groove (107) is connected with a through hole (108) on one side, the groove (107) is provided with a cylinder (109), the output end of the cylinder (109) is connected with a push rod (110), and the push rod (110) is movably arranged in the through hole (108).

4. A kiln downcomer skinning cleaning device as claimed in claim 3, characterised in that: The rotating shaft (103) is provided with a plurality of openings (111), the scraper (104) is connected with a connecting plate (112) which is matched with the openings (111), and the connecting plate (112) is slidably arranged in the openings (111).

5. A kiln downcomer skinning cleaning device as claimed in claim 4, characterised in that: The push rod (110) is provided with a circular truncated cone-shaped boss (113), the scraper (104) is provided with a notch (114) which is obliquely arranged, and the boss (113) is slidably arranged in the notch (114).

6. A kiln downcomer skinning cleaning device as claimed in claim 5, characterised in that: The scraper (104) is provided with a plurality of storage grooves (115) for storing the skin.

Images