A device for preventing the falling of refractory material at the bottom of a CFB boiler hanging screen

Abstract

This utility model discloses a device for preventing the refractory material at the bottom of a CFB boiler's hanging screen from falling off. The device includes a bottom support; a boiler assembly is fixedly connected to the top of the bottom support; a refractory material plate is provided at the bottom of the boiler assembly; an anti-falling mechanism is fixedly connected to the outer side of the bottom support; the anti-falling mechanism includes a motor, which is fixedly connected to the outer side of the bottom support, and a threaded rod is fixedly connected to the output end of the motor. A transmission screw block is threadedly connected to the surface of the threaded rod, and a connecting plate is fixedly connected to the inner side of the transmission screw block. This utility model, by setting up an anti-falling mechanism, changes the traditional phenomenon where the refractory material at the bottom of the boiler easily falls off during heating, causing the boiler to be directly exposed to high temperatures, leading to accidents such as explosions. It can effectively fix the refractory material, preventing it from falling off and ensuring more stable operation of the device.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, specifically a device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off. Background Technology

[0002] The device for preventing the bottom of the CFB boiler hanging screen from falling off is mainly used to solve the problem of refractory material falling off the bottom of the hanging screen during boiler operation due to factors such as high temperature, thermal expansion, and mechanical vibration. If the refractory material falls off, it will directly expose the metal tube of the hanging screen to the high-temperature flue gas, causing the tube wall to overheat, oxidize, and even cause tube rupture accidents. Through mechanical fixing and flexible connection design, it ensures that the refractory material is tightly connected to the hanging screen tube, avoiding falling off due to thermal expansion difference or vibration, thereby eliminating the hidden danger of tube rupture. Its core function is reflected in ensuring the safe operation of the boiler, extending the service life of equipment, and reducing maintenance costs.

[0003] According to a patent published on the China Patent Network, the patent title is: "A Device for Preventing the Falling of Refractory Material from the Bottom of a CFB Boiler Hanging Screen," patent application number: 202023203209.8. This utility model discloses a device for preventing the falling of refractory material from the bottom of a CFB boiler hanging screen. The device includes tensioning pipes located on both sides of the vertical section and bend of the hanging screen, with a connecting pipe between the tensioning pipes on both sides. The tensioning pipes and the connecting pipes are welded together. Both the tensioning pipes and the connecting pipes are located within the refractory material. Using this device, the refractory material can be effectively supported and fixed. During unit operation, when the hanging screen pipes expand, the refractory material will not fall off due to the different expansion amounts of the pipes, thus ensuring the refractory material is firmly and reliably secured, making boiler operation safer and more stable. However, the aforementioned refractory material anti-falling device has certain defects in use and cannot completely guarantee the prevention of refractory material falling off.

[0004] Therefore, it is necessary to design and modify the anti-fall-off device for refractory materials to effectively prevent its poor anti-fall-off effect. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off, which has the advantage of better anti-falling effect and solves the problem of poor anti-falling effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for preventing the refractory material at the bottom of a CFB boiler hanging screen from falling off, including a bottom support; The boiler assembly is fixedly connected to the top of the bottom bracket; The bottom of the boiler assembly is fitted with a refractory material plate; An anti-detachment mechanism is fixedly connected to the outer side of the bottom bracket; The anti-fall-off mechanism includes a motor, which is fixedly connected to the outside of the bottom bracket. A threaded rod is fixedly connected to the output end of the motor. A transmission screw block is threadedly connected to the surface of the threaded rod. A connecting plate is fixedly connected to the inner side of the transmission screw block. A sliding plate assembly is fixedly connected to the inner side of the connecting plate. The sliding plate assembly is slidably connected to the outside of the bottom bracket. An anti-fall-off ring is fixedly connected to the inner side of the sliding plate assembly. A positioning mechanism is fixedly connected to the front of the connecting plate.

[0007] In a preferred embodiment of this utility model, the positioning mechanism includes a positioning hole located on the outer side of the bottom bracket. A limiting slide post is fixedly connected to the outer side of the connecting plate, and a baffle plate is fixedly connected to the outer side of the limiting slide post. The inner side of the baffle plate is fixedly connected to the outer side of the slide plate assembly. A spring assembly is sleeved on the surface of the limiting slide post, and a positioning plate is slidably connected to the surface of the limiting slide post. A positioning insert is fixedly connected to the inner side of the positioning plate, and a pull plate is fixedly connected to the bottom of the positioning plate.

[0008] As a preferred embodiment of this utility model, a reinforcing plate is fixedly connected to the outer side of the shielding plate, and the inner side of the reinforcing plate is fixedly connected to the outer side of the sliding plate assembly.

[0009] As a preferred embodiment of this utility model, a reinforcing ring is fixedly connected to the surface of the positioning insert, and the reinforcing ring is fixedly connected to the positioning plate.

[0010] As a preferred embodiment of this utility model, an auxiliary pull rod is fixedly connected to the outer side of the pull plate, and the auxiliary pull rod is used in conjunction with the pull plate.

[0011] As a preferred embodiment of this utility model, a fixing plate is fixedly connected to both sides of the motor, and the inner side of the fixing plate is fixedly connected to the outer side of the bottom bracket.

[0012] As a preferred embodiment of this utility model, right-angle plates are fixedly connected to both sides of the transmission screw block, and the inner side of the right-angle plates is fixedly connected to the outer side of the connecting plate.

[0013] As a preferred embodiment of this invention, a connecting strip is fixedly connected to the top of the connecting plate, and the bottom of the connecting strip is fixedly connected to the top of the slide plate assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting an anti-fall-off mechanism, changes the phenomenon that the refractory material at the bottom of the traditional boiler is prone to falling off during the heating process, causing the boiler to be directly exposed to high temperature and resulting in accidents such as explosion. It can effectively fix the refractory material and prevent it from falling off, ensuring that the device can operate more stably.

[0015] 2. By setting up a positioning mechanism, this utility model can fix the position of the anti-fall mechanism, prevent it from shifting position, and ensure that the structure is more stable.

[0016] 3. By setting up the reinforcing plate, this utility model can strengthen and fix the shielding plate, prevent the shielding plate from separating, and ensure the stability of the connection between the structures.

[0017] 4. By setting a reinforcing ring, this utility model can reinforce the positioning strip, prevent the positioning strip from falling off, and ensure its more stable operation.

[0018] 5. This utility model, through the setting of the auxiliary pull rod, can assist the pull plate, making it convenient for the user to move the pull plate and providing convenience for the user.

[0019] 6. The present invention can strengthen the motor by setting the fixing plate, and strengthen the connection between the motor and the bottom bracket, so that the two can be connected more stably.

[0020] 7. By setting a right-angle plate, this utility model can reinforce the transmission screw block and strengthen the connection between the transmission screw block and the connecting plate.

[0021] 8. By setting up a connecting strip, this utility model can strengthen the connection of the connecting plate and ensure a more stable connection between it and the skateboard assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the anti-fall-off mechanism of this utility model; Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a structural diagram of the positioning mechanism of this utility model; Figure 5 This is an exploded view of the positioning mechanism of this utility model.

[0023] In the diagram: 1. Boiler support; 2. Boiler assembly; 3. Refractory material plate; 4. Anti-fall mechanism; 41. Motor; 42. Threaded rod; 43. Transmission screw block; 44. Connecting plate; 45. Slide plate assembly; 46. Anti-fall ring; 5. Positioning mechanism; 51. Positioning hole; 52. Limiting slide column; 53. Baffle plate; 54. Spring assembly; 55. Positioning plate; 56. Positioning insert; 57. Pull plate; 6. Reinforcing plate; 7. Reinforcing ring; 8. Auxiliary pull rod; 9. Fixing plate; 10. Right angle plate; 11. Connecting strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown, the present invention provides a device for preventing the refractory material at the bottom of a CFB boiler hanging screen from falling off, including a bottom support 1; Boiler assembly 2 is fixedly connected to the top of the bottom bracket 1; A refractory material plate 3 is provided at the bottom of the boiler assembly 2; An anti-detachment mechanism 4 is fixedly connected to the outer side of the bottom bracket 1; The anti-fall mechanism 4 includes a motor 41, which is fixedly connected to the outside of the bottom bracket 1. A threaded rod 42 is fixedly connected to the output end of the motor 41. A transmission screw block 43 is threadedly connected to the surface of the threaded rod 42. A connecting plate 44 is fixedly connected to the inner side of the transmission screw block 43. A sliding plate assembly 45 is fixedly connected to the inner side of the connecting plate 44. The sliding plate assembly 45 is slidably connected to the outside of the bottom bracket 1. An anti-fall ring 46 is fixedly connected to the inner side of the sliding plate assembly 45. A positioning mechanism 5 is fixedly connected to the front of the connecting plate 44.

[0026] refer to Figure 4 The positioning mechanism 5 includes a positioning hole 51, which is opened on the outer side of the bottom bracket 1. A limiting slide post 52 is fixedly connected to the outer side of the connecting plate 44. A baffle plate 53 is fixedly connected to the outer side of the limiting slide post 52. The inner side of the baffle plate 53 is fixedly connected to the outer side of the slide plate assembly 45. A spring assembly 54 is sleeved on the surface of the limiting slide post 52. A positioning plate 55 is slidably connected to the surface of the limiting slide post 52. A positioning insert 56 is fixedly connected to the inner side of the positioning plate 55. A pull plate 57 is fixedly connected to the bottom of the positioning plate 55.

[0027] As a technical optimization of this utility model, the positioning mechanism 5 can fix the position of the anti-dropping mechanism 4, prevent it from shifting position, and ensure that the structure is more stable.

[0028] refer to Figure 4 A reinforcing plate 6 is fixedly connected to the outer side of the shield 53, and the inner side of the reinforcing plate 6 is fixedly connected to the outer side of the slide assembly 45.

[0029] As a technical optimization of this utility model, the setting of the reinforcing plate 6 can strengthen and fix the shielding plate 53, prevent the shielding plate 53 from separating, and ensure the stability of the connection between the structures.

[0030] refer to Figure 5 The surface of the positioning insert 56 is fixedly connected with a reinforcing ring 7, which is fixedly connected to the positioning plate 55.

[0031] As a technical optimization of this utility model, the reinforcing ring 7 can reinforce the positioning strip 56, prevent the positioning strip 56 from falling off, and ensure its more stable operation.

[0032] refer to Figure 5 An auxiliary pull rod 8 is fixedly connected to the outside of the pull plate 57, and the auxiliary pull rod 8 is used in conjunction with the pull plate 57.

[0033] As a technical optimization of this utility model, the auxiliary pull rod 8 can assist the pull plate 57, making it easier for the user to move the pull plate 57 and providing convenience for the user.

[0034] refer to Figure 2 Both sides of the motor 41 are fixedly connected to a fixing plate 9, and the inner side of the fixing plate 9 is fixedly connected to the outer side of the bottom bracket 1.

[0035] As a technical optimization of this utility model, the setting of the fixing plate 9 can strengthen the motor 41, enhance the connection between the motor 41 and the bottom bracket 1, and enable the two to be connected more stably.

[0036] refer to Figure 3 Both sides of the transmission screw block 43 are fixedly connected with right angle plates 10, and the inner side of the right angle plates 10 is fixedly connected to the outer side of the connecting plate 44.

[0037] As a technical optimization of this utility model, the right-angle plate 10 can reinforce the transmission screw block 43 and strengthen the connection between the transmission screw block 43 and the connecting plate 44.

[0038] refer to Figure 3 A connecting strip 11 is fixedly connected to the top of the connecting plate 44, and the bottom of the connecting strip 11 is fixedly connected to the top of the skateboard assembly 45.

[0039] As a technical optimization of this utility model, the connecting strip 11 can strengthen the connection of the connecting plate 44 and ensure a more stable connection between it and the slide plate assembly 45.

[0040] The working principle and usage process of this utility model are as follows: First, the user starts the motor 41, the threaded rod 42 rotates and drives the transmission screw block 43 to move horizontally, which drives the connecting plate 44, the sliding plate assembly 45 and the anti-detachment ring 46 to approach the edge of the refractory material plate 3. When the anti-detachment ring 46 contacts the edge of the refractory material plate 3, the motor 41 is stopped, the auxiliary pull rod 8 on the outside of the pull plate 57 is released, the spring assembly 54 pushes the positioning plate 55 to move towards the bottom bracket 1, the positioning insert 56 is inserted into the positioning hole 51, and the position of the connecting plate 44 is locked, ensuring that the anti-detachment ring 46 continues to clamp the refractory material plate 3.

[0041] In summary, this device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off, by setting up an anti-fall-off mechanism, changes the traditional phenomenon where the refractory material at the bottom of the boiler is prone to falling off during heating, causing the boiler to be directly exposed to high temperatures and potentially leading to explosions or other accidents. It can effectively fix the refractory material and prevent it from falling off, ensuring that the device can operate more stably.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing the refractory material at the bottom of a CFB boiler hanging screen from falling off, comprising a bottom support (1); Boiler assembly (2) is fixedly connected to the top of the bottom bracket (1); A refractory material plate (3) is provided at the bottom of the boiler assembly (2); The bottom bracket (1) is fixedly connected to an anti-fall mechanism (4); Its features are: The anti-detachment mechanism (4) includes a motor (41), which is fixedly connected to the outside of the bottom bracket (1). The output end of the motor (41) is fixedly connected to a threaded rod (42). The surface of the threaded rod (42) is threadedly connected to a transmission screw block (43). The inner side of the transmission screw block (43) is fixedly connected to a connecting plate (44). The inner side of the connecting plate (44) is fixedly connected to a sliding plate assembly (45). The sliding plate assembly (45) is slidably connected to the outside of the bottom bracket (1). The inner side of the sliding plate assembly (45) is fixedly connected to an anti-detachment ring (46). The front of the connecting plate (44) is fixedly connected to a positioning mechanism (5).

2. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 1, characterized in that: The positioning mechanism (5) includes a positioning hole (51), which is located on the outside of the bottom bracket (1). A limiting slide post (52) is fixedly connected to the outside of the connecting plate (44). A baffle plate (53) is fixedly connected to the outside of the limiting slide post (52). The inside of the baffle plate (53) is fixedly connected to the outside of the slide plate assembly (45). A spring assembly (54) is sleeved on the surface of the limiting slide post (52). A positioning plate (55) is slidably connected to the surface of the limiting slide post (52). A positioning insert (56) is fixedly connected to the inside of the positioning plate (55). A pull plate (57) is fixedly connected to the bottom of the positioning plate (55).

3. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 2, characterized in that: A reinforcing plate (6) is fixedly connected to the outer side of the shield (53), and the inner side of the reinforcing plate (6) is fixedly connected to the outer side of the slide assembly (45).

4. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 2, characterized in that: The surface of the positioning insert (56) is fixedly connected with a reinforcing ring (7), and the reinforcing ring (7) is fixedly connected to the positioning plate (55).

5. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 2, characterized in that: An auxiliary pull rod (8) is fixedly connected to the outside of the pull plate (57), and the auxiliary pull rod (8) is used in conjunction with the pull plate (57).

6. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 1, characterized in that: Both sides of the motor (41) are fixedly connected to a fixing plate (9), and the inner side of the fixing plate (9) is fixedly connected to the outer side of the bottom bracket (1).

7. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 1, characterized in that: Both sides of the transmission screw block (43) are fixedly connected to right angle plates (10), and the inner side of the right angle plate (10) is fixedly connected to the outer side of the connecting plate (44).

8. The device for preventing the refractory material at the bottom of the CFB boiler hanging screen from falling off according to claim 1, characterized in that: The top of the connecting plate (44) is fixedly connected to a connecting strip (11), and the bottom of the connecting strip (11) is fixedly connected to the top of the slide plate assembly (45).

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