Slag stopper of coal-fired boiler

Abstract

The utility model relates to the technical field of boiler slag stopping equipment, and particularly discloses a coal-fired boiler slag stopper which comprises a cross beam, a connecting plate is installed below the cross beam in a hinged mode, a slag stopping plate is arranged on the bottom edge of the connecting plate, an inserting opening is formed in the bottom side of the connecting plate, and an inserting plate is arranged on the top edge of the slag stopping plate. Fixing pieces are arranged on the connecting plate and the inserting plate, mounting blocks are fixedly mounted at the positions, located on the two sides of the connecting plate, of the bottom face of the cross beam, torsion springs are fixedly mounted in the mounting blocks, the ends of the torsion springs are fixedly mounted at the hinged end of the connecting plate, a vertical plate is fixedly mounted on one side of the cross beam, and a reinforcing piece is arranged on the vertical plate. According to the slag stopper of the coal-fired boiler, the slag stopping plate can be buffered when coal slag is stopped, the phenomenon that the slag stopping plate is damaged due to collision of coal briquettes due to the fact that the temperature of the slag stopping plate is too high is avoided, the service life of the slag stopping plate is prolonged, and the damaged slag stopping plate can be easily replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler slag retaining equipment, in particular to a slag retainer for a coal-fired boiler. Background Art

[0002] The slag stopper is also called the slag stopper. Because of its eagle-like shape, it is commonly known as the eagle iron. The slag stopper is mainly used at the end of the grate of the traditional chain grate boiler to block the slag on the grate and prolong the residence time of the ash at the rear of the grate. It has a simple structure and is easy to manufacture, so it has a wide range of applications.

[0003] Since the existing placement end and the slag stopper are usually made in an integral casting form, when the slag stopper is burned, workers need to repurchase and replace the entire slag stopper, which reduces the cost-effectiveness of the slag stopper.

[0004] The existing patent (announcement number: CN202120528530.9) is a slag stop device for a boiler. The slag stop part can be disassembled by setting a connecting part and a pinning assembly. Only the slag stop end that is more severely consumed needs to be replaced. Compared with the existing technology, on the one hand, it changes the labor steps of workers when replacing the main body and improves the convenience of using the main body. On the other hand, it can reduce the cost of maintaining the main body and improve the cost-effectiveness of using the main body.

[0005] In view of the above problems, existing patents have provided solutions. However, in actual use, since the slag stopper is arranged in the boiler, the temperature of the coal is transmitted to the slag stopper plate. When the slag stopper plate is hit by coal blocks, it is easy to be damaged. The fixing structure of the above device is also inconvenient. The friction-increasing pad is prone to melting, which needs to be improved.

[0006] Therefore, a slag stopper for a coal-fired boiler is proposed. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a slag stopper for a coal-fired boiler which can buffer a slag stopper plate and increase the service life of the slag stopper plate.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a slag stopper for a coal-fired boiler, comprising a crossbeam, a connecting plate hingedly installed under the crossbeam, a slag stopper plate is arranged at the bottom edge of the connecting plate, a socket is opened at the bottom side of the connecting plate, a plug plate is opened at the top edge of the slag stopper, fixings are arranged on the connecting plate and the plug plate, mounting blocks are fixedly installed on both sides of the connecting plate on the bottom surface of the crossbeam, a torsion spring is fixedly installed in the mounting block, the end of the torsion spring is fixedly installed to the hinged end of the connecting plate, a vertical plate is fixedly installed on one side of the crossbeam, and a reinforcement member is arranged on the vertical plate.

[0009] Preferably, the connecting plate and the slag retaining plate are both arranged in an arc shape and the curvatures of the two are adapted to each other, and the socket and the plug plate are both arranged in an arc shape.

[0010] Preferably, the fixing member includes mounting openings on both sides of the plug plate, a return spring arranged in the mounting opening, a fixing block slidably arranged on the mounting opening, and a fixing opening on the connecting plate located on the side of the plug port, the fixing block and the fitting surface of the fixing opening are both arranged to be matching arc surfaces, and the return spring is pressed between the plug plate and the fixing block.

[0011] Preferably, the size of the plug board is matched with the size of the socket, and at least two symmetrical groups of fixing blocks are provided on the side of the plug board, and the size of the fixing blocks is matched with the size of the fixing port.

[0012] Preferably, the fixing block is arranged on the top side of the plug board, and the fixing opening is arranged on the top side of the socket.

[0013] Preferably, the reinforcement comprises a sleeve column fixedly mounted symmetrically on one side of the vertical plate close to the connecting plate, a holding spring fixedly mounted in the sleeve column, a movable rod slidably mounted on the sleeve column, and a universal ball fixedly mounted on the end of the movable rod.

[0014] Preferably, the spring is pressed between the sleeve column and the movable rod, and the end of the movable rod is connected to the back side of the connecting plate through a universal ball.

[0015] Preferably, the outer diameter of the movable rod is matched with the inner diameter of the sleeve column.

[0016] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In the utility model, by setting the cooperation between the crossbeam, the connecting plate, the slag baffle plate, the mounting block, the torsion spring, the vertical plate, the sleeve column, the holding spring, the movable rod and the universal ball, the slag baffle plate can be buffered for the second time during the slag blocking process, so as to avoid the phenomenon that the slag baffle plate is damaged by the collision of coal blocks due to excessive temperature, thereby increasing the service life of the slag baffle plate and effectively improving the economic efficiency.

[0018] 2. In the utility model, by setting the cooperation between the connecting plate, the slag stopper plate, the socket, the plug plate, the installation port, the reset spring, the fixing block and the fixing port, the slag stopper plate can be easily disassembled and assembled, and the slag stopper plate that is worn or damaged can be replaced easily. The structure is simple, time-saving and labor-saving, and the convenience is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 2 It is a side view structural diagram of the utility model;

[0021] Figure 3 This is the formal plan view of the utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the sleeve column of the utility model;

[0023] Figure 5 This is a structural diagram of the installation block of the utility model;

[0024] Figure 6 It is a side cross-sectional structural diagram of the connecting plate and the slag retaining plate of the utility model;

[0025] Figure 7 This is a structural diagram of the fixing member of the present utility model.

[0026] Legend:

[0027] 1. Crossbeam; 2. Connecting plate; 3. Slag retaining plate; 4. Socket; 5. Insert plate; 6. Fixing piece; 61. Mounting opening; 62. Reset spring; 63. Fixing block; 64. Fixing opening; 7. Mounting block; 8. Torsion spring; 9. Vertical plate; 10. Reinforcement piece; 101. Sleeve column; 102. Holding spring; 103. Movable rod; 104. Universal ball. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-7 The utility model provides a technical solution: a slag stopper for a coal-fired boiler, comprising a crossbeam 1, a connecting plate 2 is hingedly installed below the crossbeam 1, a slag stopper 3 is arranged on the bottom edge of the connecting plate 2, a socket 4 is opened on the bottom side of the connecting plate 2, a plug plate 5 is opened on the top edge of the slag stopper 3, fixing parts 6 are arranged on the connecting plate 2 and the plug plate 5, mounting blocks 7 are fixedly installed on both sides of the connecting plate 2 on the bottom surface of the crossbeam 1, a torsion spring 8 is fixedly installed in the mounting block 7, and the end of the torsion spring 8 is fixedly installed with the hinged end of the connecting plate 2, a vertical plate 9 is fixedly installed on one side of the crossbeam 1, and a reinforcement member 10 is arranged on the vertical plate 9.

[0030] When in use, the device is fixedly installed at the end of the grate in the coal-fired boiler through the cross beam 1. The slag baffle plate 3 blocks the coal slag on the grate, prolongs the residence time of the coal slag at the rear of the grate, and causes the combustibles mixed in the coal slag to burn out. When the slag baffle plate 3 is blocking, the coal temperature is transmitted to the slag baffle plate 3. In the blocking process, it is inevitable that coal blocks will collide with the slag baffle plate 3. The slag baffle plate 3 is driven by the force to drive the connecting plate 2 to deflect slightly on the cross beam 1. During the deflection of the movable plate, the slag baffle plate 3 is buffered by the restoring force of the torsion spring 8 in the mounting block 7. After buffering, the connecting plate 2 and the slag baffle plate 3 are driven to reset again. The provided reinforcement member 10 can improve the stability of the slag baffle plate 3, and can enhance the stability of the slag baffle plate 3 while improving the resetting effect. When the slag baffle plate When the slag retaining plate 3 is worn or damaged after long-term use, the operator pulls the slag retaining plate 3 away from the connecting plate 2, and the slag retaining plate 3 drives the plugging plate 5 to slide on the socket 4 and disengage from the socket 4, and the fixing mechanism is automatically unlocked, so that the slag retaining plate 3 can be removed. When installing a new slag retaining plate 3, the plugging plate 5 on the side of the slag retaining plate 3 is directly inserted into the socket 4 at the bottom of the connecting plate 2. When the plugging plate 5 is fully inserted into the socket 4, the fixing member 6 automatically fixes the plugging plate 5 to complete the installation and fixation between the connecting plate 2 and the slag retaining plate 3. The slag retainer of the coal-fired boiler can buffer the slag retaining plate 3 when blocking the coal slag, so as to avoid the phenomenon that the slag retaining plate 3 is damaged by the collision of coal blocks due to excessive temperature, thereby improving the service life of the slag retaining plate 3 and easily replacing the damaged slag retaining plate 3.

[0031] The connecting plate 2 and the slag retaining plate 3 are both arranged in arc shape and the curvatures of the two are adapted to each other, and the socket 4 and the plug plate 5 are both arranged in arc shape; thus, the connecting plate 2 and the slag retaining plate 3 can be highly integrated after being installed and fixed.

[0032] The fixing member 6 includes mounting holes 61 provided on both sides of the plug plate 5, return springs 62 provided in the mounting holes 61, fixing blocks 63 slidably provided on the mounting holes 61, and fixing holes 64 provided on the connecting plate 2 at the side of the socket 4. The fitting surfaces of the fixing blocks 63 and the fixing holes 64 are both provided as matching arc surfaces, and the return springs 62 are pressed between the plug plate 5 and the fixing blocks 63. When the slag baffle plate 3 is disassembled, the plug plate 5 moves outward in the socket 4, so that the fixing blocks 63 are subjected to an extrusion force. The fixing blocks 63 are subjected to an extrusion force to compress the return springs 62 to enter the mounting holes 61 and disengage from the fixing holes 64. When the plate 5 is completely separated from the socket 4, the disassembly of the slag stopper 3 is completed. When the slag stopper 3 is installed, the fixing block 63 is subjected to an extrusion force during the movement of the plug plate 5 in the socket 4. The fixing block 63 is compressed by the extrusion force and enters the installation port 61 into the fixing port 61. When the plug plate 5 is fully inserted into the socket 4, the installation port 61 is opposite to the fixing port 64. The fixing block 63 is inserted into the fixing port 64 by the restoring force of the reset spring 62, completing the installation of the plug plate 5 and the slag stopper 3. The slag stopper 3 can be easily disassembled and assembled, and it is convenient to replace the slag stopper 3 after wear or damage. The structure is simple, time-saving and labor-saving, and the convenience is strong.

[0033] The size of the plug plate 5 matches the size of the socket 4, and the side fixing blocks 63 of the plug plate 5 are provided with at least two symmetrical groups and the size of the fixing blocks 63 matches the size of the fixing socket 64; the stability of the plug plate 5 and the slag baffle plate 3 after installation and fixation can be improved.

[0034] The fixing block 63 is arranged on the top side of the plug plate 5, and the fixing opening 64 is arranged on the top side of the plug opening 4; this can prevent the high temperature in the furnace from affecting the various components in the fixing part 6, and further improve the stability of the slag blocking plate 3.

[0035] The reinforcement 10 includes a sleeve column 101 fixedly installed symmetrically on one side of the vertical plate 9 close to the connecting plate 2, a holding spring 102 fixedly installed in the sleeve column 101, a movable rod 103 slidably set on the sleeve column 101, and a universal ball 104 fixedly installed at the end of the movable rod 103. The spring is held between the sleeve column 101 and the movable rod 103. The end of the movable rod 103 is connected to the back of the connecting plate 2 through the universal ball 104. The outer diameter of the movable rod 103 is matched with the inner diameter of the sleeve column 101. When the connecting plate 2 is deflected, the universal ball 104 and the movable rod 103 are subjected to a force. The movable rod 103 is subjected to the force to compress the holding spring 102 and move it into the sleeve column 101, which can enhance the stability of the slag retaining plate 3 while improving the reset effect.

[0036] Working principle:

[0037] When in use, the device is fixedly installed at the end of the grate in the coal-fired boiler through the crossbeam 1, and the slag blocking plate 3 blocks the coal slag on the grate, prolongs the residence time of the coal slag at the rear of the grate, and causes the combustibles mixed in the coal slag to burn out. When the slag blocking plate 3 blocks the coal temperature, the coal temperature is transmitted to the slag blocking plate 3. In the blocking process, it is inevitable that coal blocks will collide with the slag blocking plate 3. The slag blocking plate 3 is driven by the force to drive the connecting plate 2 to deflect slightly on the crossbeam 1. During the deflection of the movable plate, the slag blocking plate 3 is buffered by the restoring force of the torsion spring 8 in the mounting block 7. After buffering, the connecting plate 2 and the slag blocking plate 3 are driven to reset again. During the deflection of the connecting plate 2, the universal ball 104 and the movable rod 103 are subjected to the force. The movable rod 103 is subjected to the force to compress the holding spring 102 and move it into the sleeve column 101, thereby enhancing the stability of the slag blocking plate 3 and improving the reset effect, avoiding the phenomenon that the slag blocking plate 3 is damaged by the collision of coal blocks due to excessive temperature, and prolonging the service life of the slag blocking plate 3.

[0038] When the slag blocking plate 3 is worn or damaged after long-term use, the operator pulls the slag blocking plate 3 away from the connecting plate 2. The operator pulls the slag blocking plate 3 away from the connecting plate 2, and the slag blocking plate 3 drives the plug plate 5 to slide outward on the socket 4. During the process of the plug plate 5 sliding outward in the socket 4, the fixing block 63 is subjected to an extrusion force. The fixing block 63 is subjected to the extrusion force to compress the reset spring 62 into the installation port 61 and disengage from the fixing port 64. When the plug plate 5 is completely separated from the socket 4, the removal of the slag blocking plate 3 is completed. When installing a new slag baffle plate 3, directly insert the plug plate 5 on the side of the slag baffle plate 3 into the socket 4 on the bottom edge of the connecting plate 2. When the plug plate 5 moves in the socket 4, the fixing block 63 is subjected to an extrusion force. The fixing block 63 is subjected to the extrusion force to compress the reset spring 62 and enter the installation port 61. When the plug plate 5 is fully inserted into the socket 4, the installation port 61 is opposite to the fixing port 64. The restoring force of the reset spring 62 is used to insert the fixing block 63 into the fixing port 64, thereby completing the installation of the plug plate 5 and the slag baffle plate 3.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slag retainer for a coal-fired boiler, comprising a crossbeam (1), characterized in that: A connecting plate (2) is hingedly installed below the cross beam (1), a slag retaining plate (3) is arranged at the bottom edge of the connecting plate (2), a socket (4) is opened at the bottom side of the connecting plate (2), a plug plate (5) is opened at the top edge of the slag retaining plate (3), fixing parts (6) are arranged on the connecting plate (2) and the plug plate (5), mounting blocks (7) are fixedly installed on both sides of the bottom surface of the cross beam (1), a torsion spring (8) is fixedly installed in the mounting block (7), and the end of the torsion spring (8) is fixedly installed with the hinged end of the connecting plate (2), a vertical plate (9) is fixedly installed on one side of the cross beam (1), and a reinforcing member (10) is arranged on the vertical plate (9).

2. A slag retainer for a coal-fired boiler according to claim 1, characterized in that: The connecting plate (2) and the slag blocking plate (3) are both arranged in an arc shape, and the arcs of the two are adapted to each other; the socket (4) and the plug plate (5) are both arranged in an arc shape.

3. The slag retainer for a coal-fired boiler according to claim 1, characterized in that: The fixing member (6) comprises mounting openings (61) provided on both sides of the plug board (5), a return spring (62) provided in the mounting opening (61), a fixing block (63) slidably provided on the mounting opening (61), and a fixing opening (64) provided on the connecting plate (2) and located on the side of the plug opening (4); the fitting surfaces of the fixing block (63) and the fixing opening (64) are both provided as matching arc surfaces; the return spring (62) is pressed between the plug board (5) and the fixing block (63).

4. The slag retainer for a coal-fired boiler according to claim 1, characterized in that: The size of the plug board (5) matches the size of the socket (4); at least two symmetrical groups of fixing blocks (63) are provided on the side of the plug board (5); and the size of the fixing blocks (63) matches the size of the fixing socket (64).

5. A slag retainer for a coal-fired boiler according to claim 4, characterized in that: The fixing block (63) is arranged on the top side of the plug board (5), and the fixing opening (64) is arranged on the top side of the socket (4).

6. A slag retainer for a coal-fired boiler according to claim 1, characterized in that: The reinforcing member (10) comprises a sleeve column (101) fixedly mounted symmetrically on one side of the vertical plate (9) close to the connecting plate (2), a holding spring (102) fixedly mounted inside the sleeve column (101), a movable rod (103) slidably mounted on the sleeve column (101), and a universal ball (104) fixedly mounted on the end of the movable rod (103).

7. A slag retainer for a coal-fired boiler according to claim 6, characterized in that: The spring is pressed between the sleeve column (101) and the movable rod (103), and the end of the movable rod (103) is connected to the back side of the connecting plate (2) through a universal ball (104).

8. A slag retainer for a coal-fired boiler according to claim 7, characterized in that: The outer diameter of the movable rod (103) is matched with the inner diameter of the sleeve column (101).

Images