Fire-resistant castable fixing structure for slag hopper of coal-fired boiler

Abstract

The utility model discloses a fire-resistant castable fixing structure for a slag hopper of a coal-fired boiler, which belongs to the technical field of slag hoppers of coal-fired boilers and comprises V-shaped rake nails, the V-shaped rake nails are fixed on the surface of the slag hopper of the coal-fired boiler by welding, a support component is arranged below the V-shaped rake nails, and a reinforcing mesh is arranged on the outer side of the V-shaped rake nails. The V-shaped harrow nails are firmly welded to the boiler slag hopper and bear larger gravity, the reinforcing mesh is used for reinforcing the V-shaped harrow nails, so that the V-shaped harrow nails are overall firm and stable, refractory castable is reinforced and firmly built through the densely-arranged harrow nails, the V-shaped harrow nails do not deform, the refractory castable does not loosen, it is guaranteed that the refractory castable of the boiler slag hopper does not fall off integrally, and the service life of the boiler slag hopper is prolonged. The V-shaped rake nails are effectively prevented from being burnt out by slag, equipment damage and personal injury are avoided, and the transformation cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal-fired boiler slag buckets, and in particular relates to a refractory castable fixing structure for a coal-fired boiler slag bucket. Background Art

[0002] The slag bucket of coal-fired boiler and the upper vertical guard plate of dry slag machine are usually laid with refractory castables. The method is first to weld stainless steel "L"-shaped or "W"-shaped hook nails every 200mm between the inclined surface or vertical inner wall of the slag bucket; then the castables are mixed in a certain proportion, poured into the inner wall of the slag bucket, vibrated with a vibrator, and moved point by point. The vibrator moves no more than 300mm each time. The pouring thickness of the refractory castable is 200mm. The pouring of the castable is carried out continuously during construction, and the pouring process is uninterrupted. After pouring, it needs to be cured with molds for 2 days, and the molds are removed for curing after 7 days. During use, it is found that the refractory castables fixed with "L"-shaped or "W"-shaped hook nails are easy to fall off. The main reason is that the structure is easy to deform at high temperature and cannot fix the refractory castable. The steel plate is deformed after being roasted by high-temperature slag, which makes the hook nails more serious, a vicious cycle, until the refractory castable falls off completely, causing equipment damage and personal injury, and there are serious safety hazards.

[0003] The prior art has the following problems:

[0004] 1. The existing hook nail structure is single and slender, it bears large torsion, is easy to deform, and has no interconnection reinforcement measures on the outside;

[0005] 2. The old structural type used for fixing thermal insulation materials has a small gravity load and is difficult to bear the weight of high-density refractory castable materials;

[0006] 3. The contact area with the refractory castable is small, and it is easy to separate at high temperature. Once separated, it can't play a fixing role at all, causing partial falling off. The deformation of the exposed hook nails causes the refractory materials in other positions to loosen and fall off, aggravating the falling of the refractory castable in the slag bucket, posing a safety hazard. Utility Model Content

[0007] In order to solve the problems raised in the above background technology, the utility model provides a refractory castable fixing structure for a coal-fired boiler slag hopper, which has the characteristics of safety, reliability, simple structure and low technical transformation cost.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal-fired boiler slag bucket refractory castable fixing structure, including V-shaped rake nails, which are fixed to the surface of the boiler slag bucket by welding, a support assembly is arranged below the V-shaped rake nails, and a steel mesh is arranged on the outside of the V-shaped rake nails.

[0009] Preferably, the V-shaped rake nails are threaded steel rake nails with a diameter of Φ12mm.

[0010] Preferably, the V-shaped rake nails are distributed at equal intervals and offset on the surface of the boiler slag hopper.

[0011] Preferably, the support assembly includes a support frame, a mounting block, and a support block. Among them, a mounting block is arranged below the V-shaped rake nail, an inclined support frame is arranged on the side of the mounting block, and a support block is arranged at the upper end of the support frame.

[0012] Preferably, the support frame is in a V-shaped structure, and the support frame and the mounting block are of an integral structure.

[0013] Preferably, the mounting block and the boiler slag hopper are fastened by fastening bolts.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model is provided with V-shaped rake nails, which can bear greater gravity after being welded firmly on the boiler slag hopper. The steel mesh is used to reinforce the V-shaped rake nails to make the overall firm stability of the V-shaped rake nails. The refractory castable is reinforced and built firmly by densely arranging the rake nails. The V-shaped rake nails do not deform and the refractory castable does not loosen, ensuring that the refractory castable of the boiler slag hopper does not fall off as a whole, effectively preventing the furnace slag from burning out the V-shaped rake nails, causing equipment damage and personal injury, and the transformation cost is low;

[0016] 2. The present utility model is provided with a support assembly below the V-shaped rake nails. The support block holds both ends of the V-shaped rake nails, the support frame provides support, and the fastening bolts fix the mounting block on the inner wall of the boiler slag hopper. Through the support, the deformation of the V-shaped rake nails is avoided, and the use stability is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a left view of the present utility model;

[0019] Figure 3 is a top view of the present utility model;

[0020] In the figure: 1, V-shaped rake nail; 2, boiler slag hopper; 3, support assembly; 31, support frame; 32, mounting block; 33, fastening bolt; 34, support block; 4, steel mesh. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1-3 , the present utility model provides the following technical solutions: A fixing structure for refractory castable of a coal-fired boiler slag hopper, including V-shaped stud 1, which is fixed on the surface of the boiler slag hopper 2 by welding. A support assembly 3 is arranged below the V-shaped stud 1, and a steel mesh 4 is arranged outside the V-shaped stud 1.

[0024] Specifically, the V-shaped stud 1 is a threaded steel stud with a diameter of Φ12mm.

[0025] By adopting the above technical solutions, the bearing capacity is ensured and the stability of the structure is guaranteed.

[0026] Specifically, the V-shaped studs 1 are evenly spaced and staggeredly distributed on the surface of the boiler slag hopper 2.

[0027] By adopting the above technical solutions, the refractory castable is reinforced and consolidated by densely arranging the studs.

[0028] When this embodiment is used, a number of V-shaped studs 1 are welded on the surface of the boiler slag hopper 2 at equal intervals and staggeredly. After being firmly welded to the boiler slag hopper 2, it can bear greater gravity. The steel mesh 4 is used to reinforce the V-shaped studs 1 to make the overall firm stability of the V-shaped studs 1. The refractory castable is reinforced and consolidated by densely arranging the studs. The V-shaped studs 1 do not deform and the refractory castable does not loosen, ensuring that the refractory castable of the boiler slag hopper 2 does not fall off as a whole, effectively preventing the furnace slag from burning out the V-shaped studs 1 and causing equipment damage and personal injury;

[0029] Embodiment 2

[0030] The difference between this embodiment and Embodiment 1 is that: The support assembly 3 includes a support frame 31, a mounting block 32 and a support block 34. Among them, a mounting block 32 is arranged below the V-shaped stud 1, an inclined support frame 31 is arranged on the side of the mounting block 32, and a support block 34 is arranged at the upper end of the support frame 31.

[0031] By adopting the above technical solutions, the support block 34 holds both ends of the V-shaped stud 1, and the support frame 31 provides support. Through the support, the deformation of the V-shaped stud 1 is avoided, and the use stability is guaranteed.

[0032] Specifically, the support frame 31 is provided with a V-shaped structure, and the support frame 31 and the mounting block 32 are of an integral structure.

[0033] By adopting the above technical solution, it is convenient for the support frame 31 to support the V-shaped rake nails 1, ensuring the structural stability.

[0034] Specifically, the mounting block 32 and the boiler slag hopper 2 are fastened by fastening bolts 33.

[0035] By adopting the above technical solution, the fastening bolts 33 fix the mounting block 32 on the inner wall of the boiler slag hopper 2, ensuring firm fixation.

[0036] When this embodiment is in use, by arranging the support assembly 3 below the V-shaped rake nails 1, the support blocks 34 support the two ends of the V-shaped rake nails 1, the support frame 31 provides support, and the fastening bolts 33 fix the mounting block 32 on the inner wall of the boiler slag hopper 2. Through the support, the deformation of the V-shaped rake nails 1 is avoided, ensuring the use stability.

[0037] The working principle and usage process of the present utility model: When the present utility model is in use, a number of V-shaped rake nails 1 are welded at equal intervals and staggered on the surface of the boiler slag hopper 2. After being firmly welded to the boiler slag hopper 2, they can bear greater gravity. The V-shaped rake nails 1 are reinforced by the steel mesh 4 to make the overall firmness and stability of the V-shaped rake nails 1. The refractory castable is reinforced and built firmly by densely arranging the rake nails. The V-shaped rake nails 1 do not deform and the refractory castable does not loosen, ensuring that the refractory castable of the boiler slag hopper 2 does not fall off as a whole, effectively preventing the furnace slag from burning out the V-shaped rake nails 1, causing equipment damage and personal injury; by arranging the support assembly 3 below the V-shaped rake nails 1, the support blocks 34 support the two ends of the V-shaped rake nails 1, the support frame 31 provides support, and the fastening bolts 33 fix the mounting block 32 on the inner wall of the boiler slag hopper 2. Through the support, the deformation of the V-shaped rake nails 1 is avoided, ensuring the use stability.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A refractory castable fixing structure for a coal-fired boiler slag hopper, comprising a V-shaped rake nail (1), characterized in that: The V-shaped rake nail (1) is fixed to the surface of the boiler slag bucket (2) by welding, a support assembly (3) is arranged below the V-shaped rake nail (1), and a steel mesh (4) is arranged outside the V-shaped rake nail (1).

2. A refractory castable fixing structure for a coal-fired boiler slag hopper according to claim 1, characterized in that: The V-shaped rake nail (1) is a threaded steel rake nail with a diameter of Φ12 mm.

3. A refractory castable fixing structure for a coal-fired boiler slag hopper according to claim 1, characterized in that: The V-shaped rake nails (1) are staggered and distributed at equal intervals on the surface of the boiler slag bucket (2).

4. A refractory castable fixing structure for a coal-fired boiler slag hopper according to claim 1, characterized in that: The support assembly (3) comprises a support frame (31), a mounting block (32) and a support block (34), wherein the mounting block (32) is arranged below the V-shaped rake nail (1), an inclined support frame (31) is arranged on the side of the mounting block (32), and a support block (34) is arranged at the upper end of the support frame (31).

5. A refractory castable fixing structure for a coal-fired boiler slag hopper according to claim 4, characterized in that: The support frame (31) is configured as a V-shaped structure, and the support frame (31) and the mounting block (32) are an integrated structure.

6. A refractory castable fixing structure for a coal-fired boiler slag hopper according to claim 4, characterized in that: The mounting block (32) and the boiler slag hopper (2) are fastened via a fastening bolt (33).

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