Automatic dredging device for slag inlet pipe of slag falling pipe slag cooler

Abstract

The utility model relates to the technical field of slag falling pipe dredging, in particular to an automatic slag falling pipe slag cooler slag inlet pipe dredging device which comprises a device body installed on the side face of a slag cooler slag inlet pipe, a driving base is installed on the lower side of the device body, a slag poking rod is assembled on the driving base, and the driving base is used for driving the slag poking rod to do linear reciprocating motion. A slag poking hole communicated with the inside and the outside is formed in the side surface of the slag cooler slag inlet pipe; the end part of the slag poking rod penetrates into the slag cooler slag inlet pipe through the slag poking hole; an air hole penetrating through the two ends is formed in the slag poking rod, and the end, away from the slag poking hole, of the air hole is connected with external air supply equipment through a high-pressure air pipe. The problems that in the prior art, an effective dredging device is not additionally arranged on a slag inlet pipe of the slag cooler, manual dredging is adopted, efficiency is low, and potential safety hazards exist are solved.

Description

Technical Field

[0001] This utility model relates to the field of slag pipe unblocking technology, specifically to an automatic unblocking device for the slag inlet pipe of a slag pipe cooler. Background Technology

[0002] The development and application of circulating fluidized bed boiler technology have been widely adopted. This technology is one of the advanced technologies for clean coal combustion and achieving sustainable development strategies. It integrates advantages such as energy saving, clean combustion, safety and reliability, and reduced pollution emissions. However, in actual boiler operation, some local structural problems can also affect boiler efficiency. For example, frequent blockage of the boiler ash removal pipe seriously affects the safe and economical operation of the boiler.

[0003] The slag cooler is connected to the lower part of the slag discharge pipe via a slag cooler inlet pipe. Since the slag discharge pipe is vertically installed and the slag cooler is horizontally installed, the slag cooler inlet pipe is designed as a bend, and its diameter is smaller than the diameter of the upper part of the slag discharge pipe. The upper end of the slag cooler inlet pipe is connected to the lower end of the slag discharge pipe via a tapered section. Figure 1 As shown, when ash enters the ash inlet pipe of the ash cooler, it will hit the bend in the pipe to slow down. During the deceleration process, blockage can easily occur.

[0004] In the existing technology, the coal chute is not equipped with an effective automatic unblocking device at this location. Most of the time, unblocking is done by manually knocking on the chute or by setting a slag-poke hole at this location and using a manual slag-poke rod. This method is inefficient and poses certain safety hazards. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic unblocking device for the slag inlet pipe of the slag cooler, which solves the problem that in the prior art, no effective unblocking device is installed on the slag inlet pipe of the slag cooler, and manual unblocking is used, which is inefficient and poses safety hazards.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An automatic unblocking device for the slag inlet pipe of a slag cooler includes a device body installed on the side of the slag inlet pipe of the slag cooler. A drive seat is installed on the lower side of the device body, and a slag-poke rod is mounted on the drive seat. The drive seat is used to drive the slag-poke rod to perform linear reciprocating motion. A slag-poke hole communicating with the inside and outside is provided on the side of the slag inlet pipe of the slag cooler. The end of the slag-poke rod passes through the slag-poke hole and enters the slag inlet pipe of the slag cooler. An air hole communicating with both ends is provided inside the slag-poke rod. The end of the air hole away from the slag-poke hole is connected to an external air supply device through a high-pressure air pipe.

[0008] A further technical solution is that a drive chamber is provided inside the device body, and a roller guide rail connected to the drive chamber is provided on the lower side of the device body along the length of the slag-pumping rod. A drive sprocket and a driven sprocket are respectively provided at both ends of the roller guide rail in the drive chamber. The drive sprocket and the driven sprocket are connected by chain drive. The drive seat is slidably disposed inside the roller guide rail, and the drive seat is fixedly connected to the chain inside the drive chamber. A through mounting hole is provided on the lower side of the drive seat below the device body. The slag-pumping rod is fixedly connected to the mounting hole near the high-pressure gas pipe.

[0009] A further technical solution is that rollers are provided on both sides of the drive seat, and both rollers are rolledly connected to the V-shaped surface of the roller guide rail, with four or more rollers.

[0010] A further technical solution is to set two or more driven sprockets, and arrange the driving sprocket and the two or more driven sprockets in a polygonal pattern.

[0011] A further technical solution is that the outer wall of the slag inlet pipe of the slag cooler is provided with a guide pipe that is aligned and connected with the slag-poke hole, and the outer wall of the section of the slag-poke rod away from the high-pressure gas pipe is slidably set inside the guide pipe.

[0012] A further technical solution is to install a sealing ring at the end of the guide pipe away from the slag inlet pipe of the slag cooler, and to provide a high-temperature resistant sealing ring on the inner wall of the sealing ring, which slides and fits against the outer wall of the slag-pumping rod.

[0013] A further technical solution involves installing a high-temperature resistant sealing ring on the inner wall of a sealing ring via a clamping ring. A support ring is formed by a protrusion on the inner wall of the sealing ring at the end connected to the guide tube. The outer wall of the clamping ring and the inner wall of the sealing ring slide against each other. The high-temperature resistant sealing ring is installed between the support ring and the clamping ring. A threaded rod is provided at the end of the sealing ring away from the guide tube. A nut is threadedly connected to the threaded rod. A pressure plate is slidably fitted between the threaded rod and the nut and the sealing ring. The pressure plate is connected to the clamping ring.

[0014] A further technical solution is to have a disc spring fitted between the pressure plate and the nut on the threaded rod.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. By driving the slag-poke rod to reciprocate through the drive seat, the slag-poke rod can be inserted and removed back and forth in the slag inlet pipe of the slag cooler, thereby loosening the ash and slag in the slag inlet pipe of the slag cooler and avoiding blockage; 2. By setting air holes in the slag-poke rod, high-pressure gas can be blown out of the air holes with the help of an external air supply device when the slag-poke rod is inserted and removed back and forth. On the one hand, the high-pressure gas can be used to assist in unblocking, and on the other hand, the air can be used to cool the slag-poke rod when passing through the air holes, thereby improving the service life of the slag-poke rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an automatic unblocking device for the slag inlet pipe of a slag cooler, as described in this utility model, installed on the slag inlet pipe of the slag cooler.

[0017] Figure 2 This is a cross-sectional schematic diagram of an automatic unblocking device for the slag inlet pipe of a slag dropper and slag cooler according to the present invention.

[0018] Figure 3 for Figure 1 A magnified view of the area marked A in the middle.

[0019] Icons: 1- Device body, 2- Drive seat, 3- Slag-pumping rod, 4- Slag inlet pipe of slag cooler, 5- Slag-pumping hole, 6- Air hole, 7- High-pressure air pipe, 8- Drive chamber, 9- Roller guide rail, 10- Drive sprocket, 11- Driven sprocket, 12- Chain, 13- Mounting hole, 14- Roller, 15- Guide pipe, 16- Sealing ring, 17- High-temperature resistant sealing ring, 18- Compression ring, 19- Support ring, 20- Threaded rod, 21- Nut, 22- Pressure plate, 23- Disc spring, 24- Slag discharge pipe. Detailed Implementation

[0020] 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.

[0021] Figures 1 to 3 The following is an embodiment of the present invention.

[0022] Example 1:

[0023] An automatic unblocking device for the slag inlet pipe of a slag cooler includes a device body 1 installed on the side of the slag inlet pipe 4 of the slag cooler. A drive seat 2 is installed on the lower side of the device body 1, and a slag-poke rod 3 is mounted on the drive seat 2. The drive seat 2 drives the slag-poke rod 3 to perform linear reciprocating motion. A slag-poke hole 5 communicating with the inside and outside is provided on the side of the slag inlet pipe 4 of the slag cooler. The end of the slag-poke rod 3 passes through the slag-poke hole 5 and enters the slag inlet pipe 4 of the slag cooler. An air hole 6 passing through both ends is provided inside the slag-poke rod 3. The end of the air hole 6 away from the slag-poke hole 5 is connected to an external air supply device through a high-pressure air pipe 7. By driving the slag-poke rod 3 to perform reciprocating motion, the slag-poke rod 3 can be inserted and removed back and forth in the slag inlet pipe 4 of the slag cooler, thereby loosening the ash and slag in the slag inlet pipe 4 of the slag cooler and preventing blockage. An air hole 6 is installed inside the slag-pumping rod 3. When the slag-pumping rod 3 is inserted and removed back and forth, high-pressure gas is blown out of the air hole 6 by an external air supply device. This high-pressure gas assists in unblocking the slag and also cools the slag-pumping rod 3 as air passes through the air hole 6, thus extending its service life. Figure 1As shown, the slag inlet pipe 4 of the slag cooler includes a vertical section and an inclined section connected vertically. The upper end of the vertical section is connected to the lower end of the boiler's slag discharge pipe 24, and the lower end of the inclined section enters the slag cooler cylinder for slag discharge. Under normal circumstances, the slag-poke rod 3 is in the same direction as the inclined section and is inserted into the inclined section from the upper end through the slag-poke hole 5, moving back and forth along the inclined section to achieve the unblocking effect.

[0024] The device body 1 is provided with a drive chamber 8. The lower side of the device body 1 is provided with a roller guide rail 9 connected to the drive chamber 8 along the length of the slag-pumping rod 3. There are two roller guide rails 9. The drive chamber 8 is provided with a drive sprocket 10 and a driven sprocket 11 at both ends of the roller guide rail 9. The drive sprocket 10 and the driven sprocket 11 are connected by a chain 12. The drive seat 2 is rolled inside the roller guide rail 9 and is fixedly connected to the chain 12 inside the drive chamber 8. The lower side of the drive seat 2 is provided with a through mounting hole 13 at the bottom of the device body 1. The position of the slag-pumping rod 3 near the high-pressure gas pipe 7 is fixedly connected to the mounting hole 13. With the cooperation of the driving sprocket 10 and the driven sprocket 11, the rotation of the driving sprocket 10 drives the chain 12 to move together. The chain 12 then drives the drive seat 2 to move along the length of the roller guide rail 9. The driving sprocket 10 is driven by a timing motor or manually. The forward and reverse rotation of the motor achieves the reciprocating motion of the chain 12, thereby driving the drive seat 2 to reciprocate. The mounting hole 13 allows for a stable installation of the slag-pumping rod 3 and the drive seat 2, enabling the slag-pumping rod 3 to reciprocate linearly with the drive seat 2.

[0025] Rollers 14 are provided on both opposite sides of the drive base 2, and all four rollers 14 are rolledly connected to the V-shaped surface of the roller guide rail 9. By providing rollers 14, the smoothness of rolling between the drive base 2 and the roller guide rail 9 can be improved.

[0026] There are two or more driven sprockets 11, and the driving sprocket 10 and the two or more driven sprockets 11 are arranged in a polygonal pattern. By cooperating with two or more driven sprockets 11, the drive motor can be better arranged and the chain 12 can be better tensioned, making the movement of the chain 12 smoother.

[0027] The outer wall of the slag inlet pipe 4 of the slag cooler is provided with a guide pipe 15 that is aligned and connected with the slag-poke hole 5. The outer wall of the slag-poke rod 3, which is away from the high-pressure gas pipe 7, is slidably disposed within the guide pipe 15. By providing the guide pipe 15, the slag-poke rod 3 can be guided and provided with auxiliary support.

[0028] A sealing ring 16 is installed at the end of the guide pipe 15 away from the slag inlet pipe 4 of the slag cooler. A high-temperature resistant sealing ring 17 is provided on the inner wall of the sealing ring 16, and the high-temperature resistant sealing ring 17 slides against the outer wall of the slag-pumping rod 3. By setting the sealing ring 16 and the high-temperature resistant sealing ring 17, the gap between the guide pipe 15 and the slag-pumping rod 3 can be effectively sealed, preventing high-temperature ash from being carried out of the guide pipe 15 during the reciprocating motion of the slag-pumping rod 3. High-temperature ash falling to the outside could easily cause a safety hazard. During the reciprocating motion of the slag-pumping rod 3, the high-temperature resistant sealing ring 17 scrapes off the ash adhering to the slag-pumping rod 3, preventing ash from falling to the outside.

[0029] The high-temperature resistant sealing ring 17 is installed on the inner wall of the sealing ring 16 via the clamping ring 18. The inner wall of the sealing ring 16 connected to the guide tube 15 has a protrusion forming a support ring 19. The outer wall of the clamping ring 18 and the inner wall of the sealing ring 16 slide against each other. The high-temperature resistant sealing ring 17 is installed between the support ring 19 and the clamping ring 18. A threaded rod 20 is provided at the end of the sealing ring 16 away from the guide tube 15. A nut 21 is threadedly connected to the threaded rod 20. A pressure plate 22 is slidably sleeved between the threaded rod 20 and the sealing ring 16. The pressure plate 22 is connected to the clamping ring 18. After prolonged use, the high-temperature resistant sealing ring 17 is prone to wear, resulting in a reduced sealing effect. It needs to be replaced periodically or irregularly. When replacing it, the nut 21 is removed from the threaded rod 20, and then the pressure plate 22 is removed from the threaded rod. When the pressure plate 22 is removed, the clamping ring 18 will be removed from the sealing ring 16, which makes it easy to remove the high-temperature resistant sealing ring 17 from the sealing ring 16. Then, the new high-temperature resistant sealing ring 17 is installed, and then the clamping ring 18 is installed into the sealing ring 16. The high-temperature resistant sealing ring 17 is fixed in place with the support ring 19.

[0030] A disc spring 23 is fitted between the threaded rod 20 and the pressure plate 22 and the nut 21. When the slag-pumping rod 3 retracts, its surface rubs against the high-temperature resistant sealing ring 17. If the high-temperature resistant sealing ring 17 cannot move and there is only hard friction, it is easy for the high-temperature resistant sealing ring 17 to wear out quickly. By setting the disc spring 23, the elasticity of the disc spring 23 can give the pressure plate 22 a certain amount of room to move after installation. By compressing the disc spring 23, a buffer space is created between the high-temperature resistant sealing ring 17 and the slag-pumping rod 3, reducing the wear of the high-temperature resistant sealing ring 17.

[0031] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An automatic unblocking device for the slag inlet pipe of a slag dropper and slag cooler, characterized in that, The device includes a device body (1) installed on the side of the slag inlet pipe (4) of the slag cooler. A drive seat (2) is installed on the lower side of the device body (1). A slag-poke rod (3) is mounted on the drive seat (2). The drive seat (2) is used to drive the slag-poke rod (3) to perform linear reciprocating motion. A slag-poke hole (5) connecting the inside and outside is provided on the side of the slag inlet pipe (4) of the slag cooler. The end of the slag-poke rod (3) passes through the slag-poke hole (5) and enters the slag inlet pipe (4) of the slag cooler. An air hole (6) connecting both ends is provided in the slag-poke rod (3). The end of the air hole (6) away from the slag-poke hole (5) is connected to an external air supply device through a high-pressure air pipe (7).

2. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 1, characterized in that: The device body (1) is provided with a drive chamber (8). The lower side of the device body (1) is provided with a roller guide rail (9) connected to the drive chamber (8) along the length direction of the slag-pumping rod (3). The drive chamber (8) is provided with a drive sprocket (10) and a driven sprocket (11) at both ends of the roller guide rail (9). The drive sprocket (10) and the driven sprocket (11) are connected by a chain (12). The drive seat (2) is slidably disposed inside the roller guide rail (9). The drive seat (2) is fixedly connected to the chain (12) inside the drive chamber (8). The lower side of the drive seat (2) is provided with a through mounting hole (13) below the device body (1). The position of the slag-pumping rod (3) near the high-pressure gas pipe (7) is fixedly connected to the mounting hole (13).

3. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 2, characterized in that: Two rollers (14) are provided on each of the opposite sides of the drive seat (2), and all four rollers (14) are connected to the V-shaped surface of the roller guide rail (9) in a rolling manner.

4. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 2, characterized in that: The driven sprockets (11) are configured as two or more, and the driving sprocket (10) and the two or more driven sprockets (11) are arranged in a polygonal pattern.

5. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 1, characterized in that: The outer wall of the slag inlet pipe (4) of the slag cooler is provided with a guide pipe (15) that is aligned and connected with the slag-poke hole (5), and the outer wall of the slag-poke rod (3) away from the high-pressure gas pipe (7) is slidably disposed in the guide pipe (15).

6. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 5, characterized in that: A sealing ring (16) is installed at the end of the guide pipe (15) away from the slag inlet pipe (4) of the slag cooler. A high-temperature resistant sealing ring (17) is provided on the inner wall of the sealing ring (16). The high-temperature resistant sealing ring (17) slides against the outer wall of the slag-poke rod (3).

7. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 6, characterized in that: The high-temperature resistant sealing ring (17) is installed on the inner wall of the sealing ring (16) through the clamping ring (18). The inner wall of the sealing ring (16) connected to the guide tube (15) has a protrusion forming a support ring (19). The outer wall of the clamping ring (18) and the inner wall of the sealing ring (16) slide against each other. The high-temperature resistant sealing ring (17) is installed between the support ring (19) and the clamping ring (18). A threaded rod (20) is provided at the end of the sealing ring (16) away from the guide tube (15). A nut (21) is threadedly connected to the threaded rod (20). A pressure plate (22) is slidably sleeved between the threaded rod (20) and the sealing ring (16). The pressure plate (22) is connected to the clamping ring (18).

8. The automatic unblocking device for the slag inlet pipe of the slag cooler according to claim 7, characterized in that: The threaded rod (20) has a disc spring (23) sleeved between the pressure plate (22) and the nut (21).

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