Anti-blocking device for deslagging box of coal mill

Abstract

The utility model discloses an anti-blocking device for a deslagging box of a coal mill. The anti-blocking device comprises a deslagging cylinder and a connecting sleeve, mounting discs which are arranged at intervals up and down sleeve the outer side of the deslagging cylinder, and fixing holes which are formed around the deslagging cylinder are formed in the mounting discs; a connecting sleeve is further arranged between the two mounting discs, and the peripheries of the upper end and the lower end of the connecting sleeve are sleeved with fixing hoops for fixing the connecting sleeve to the peripheries of the mounting discs; the deslagging cylinder is installed on the inner side of the installation disc and fixed to the deslagging position of the deslagging box through the fixing holes formed in the installation disc, high-temperature coal slag, coke blocks and the like are isolated through the deslagging cylinder during deslagging, impurities such as the coke blocks and the like are not prone to entering the outer side of the deslagging cylinder, and the fixing structure is prevented from being damaged by high temperature; the connecting sleeve located on the outer side of the mounting disc is flexibly connected through the fixing hoop, mounting is stable, the deslagging effect is good, and a certain anti-blocking effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mills, in particular to an anti-blocking device for the slag discharge box of a coal mill. Background Technique

[0002] Coal is generally used as the raw material for power generation in thermal power plants. Before the coal enters the boiler for combustion, it has to be pulverized by a coal mill to control the particle size of the coal entering the boiler within the corresponding mesh number to achieve the best combustion effect.

[0003] In the process of using the existing slag discharge system of a coal mill, it is necessary to discharge the coal slag. If the slag discharge of the coal mill is not timely, it is easy to cause blockage of the medium-speed coal mill; during the discharge process, the coal slag discharged from the coal mill will coke. Since the coke block has a high temperature and is hard, it is easy to get stuck in the slag discharge position, causing the deformation of the installation structure of the slag discharge port, the leakage of hot air, and the damage of the fixed installation structure due to the spraying of fire from the slag discharge door. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide an anti-blocking device for the slag discharge box of a coal mill, which can avoid damage to the slag discharge position by high temperature and has a good slag discharge anti-blocking effect.

[0005] The technical solution adopted by the utility model is: an anti-blocking device for the slag discharge box of a coal mill, including a slag discharge cylinder and a connecting sleeve; an installation disk is sleeved outside the slag discharge cylinder and arranged at intervals up and down. The installation disk is provided with fixing holes arranged around the slag discharge cylinder; a connecting sleeve is also arranged between the two installation disks. The upper end and the lower end of the connecting sleeve are sleeved with fixing hoops for fixing the connecting sleeve on the outer periphery of the installation disk.

[0006] In this technical solution, the slag discharge cylinder is installed inside the installation disk and fixed at the slag discharge position of the slag discharge box through the fixing holes provided on the installation disk. The fixing structure on the installation disk is isolated by the slag discharge cylinder, so that impurities such as coke blocks are not easy to enter the outside of the slag discharge cylinder, avoiding damage to the fixing structure by high temperature. The connecting sleeve located outside the installation disk forms a flexible connection through the fixing hoop, with stable installation, good slag discharge effect, and a certain anti-blocking effect.

[0007] Preferably, an adjusting fixing buckle is provided on the fixing hoop.

[0008] Preferably, the inner side surface of the fixing hoop is provided with anti-slip teeth arranged in a circumferential direction.

[0009] Preferably, a limiting ring groove is arranged around the outer periphery of the installation disk, and the end of the connecting sleeve and the fixing hoop can be clamped into the limiting ring groove.

[0010] Preferably, fixing bolts are arranged in each fixing hole of the installation disk.

[0011] Preferably, the inner peripheral wall of the mounting disk at the lower end of the slag discharge cylinder is provided with a docking boss that is arranged around the slag discharge cylinder and protrudes from the upper end of the mounting disk.

[0012] Preferably, the connecting sleeve includes two laminated reinforced fluororubber layers, and a 304 stainless steel mesh layer is arranged between the two reinforced fluororubber layers; an aramid fabric layer is arranged in the reinforced fluororubber layer.

[0013] Preferably, the surface of the connecting sleeve is sprayed with a refractory paint coating.

[0014] The beneficial effects of the present utility model are as follows: The slag discharge cylinder in the present utility model is installed inside the mounting disk and fixed at the slag discharge position of the slag discharge box through the fixing holes provided on the mounting disk. During slag discharge, high-temperature coal slag lumps, etc. are isolated by the slag discharge cylinder, so that impurities such as lumps are not easily introduced into the outside of the slag discharge cylinder, avoiding damage to the fixing structure by high temperature. The connecting sleeve located outside the mounting disk forms a flexible connection through the fixing hoop, with stable installation, good slag discharge effect, and a certain anti-blocking effect. Description of the Drawings

[0015] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 It is a three-dimensional view of the anti-blocking device for the slag discharge box of the coal mill provided in the embodiment of the present utility model.

[0017] Figure 2 It is a cross-sectional view of the anti-blocking device for the slag discharge box of the coal mill provided in the embodiment of the present utility model.

[0018] Reference numerals: slag discharge cylinder 100, connecting sleeve 200, mounting disk 300, fixing hole 310, limit ring groove 320, docking boss 330, fixing hoop 400, adjusting fixing buckle 500. Detailed Embodiments

[0019] The following will describe in detail the embodiments of the technical solutions of the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0020] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0021] Such as Figure 1 And Figure 2As shown in the figure, a slag discharge box anti-blocking device for a coal mill is provided in a specific embodiment of the present utility model, which includes a slag discharge cylinder 100 and a connecting sleeve 200; an installation disk 300 is sleeved outside the slag discharge cylinder 100 and arranged at intervals up and down, and fixing holes 310 arranged around the slag discharge cylinder 100 are provided on the installation disk 300; a connecting sleeve 200 is further provided between the two installation disks 300, and fixing hoops 400 for fixing the connecting sleeve 200 on the outer periphery of the installation disk 300 are sleeved on the outer periphery of the upper end and the lower end of the connecting sleeve 200.

[0022] As Figure 1 and Figure 2 shown in the figure, through the above settings, the slag discharge cylinder 100 is installed inside the installation disk 300, and the installation disks 300 are arranged at intervals up and down for connecting with the slag discharge box, and are fixed at the slag discharge position of the slag discharge box through the fixing holes 310 provided on the installation disk 300. The fixing structure on the installation disk 300 is isolated by the slag discharge cylinder 100, and the fixing structure can adopt fixing bolts. After fixing bolts are arranged in each fixing hole 310 of the installation disk 300, it is fixed with the equipment slag discharge position; the slag discharge cylinder 100 can prevent impurities such as coke lumps from easily entering the outside of the slag discharge cylinder 100, avoiding damage to the fixing structure by high temperature. The connecting sleeve 200 located outside the installation disk 300 forms a flexible connection through the fixing hoop 400, with stable installation, good slag discharge effect, and a certain anti-blocking effect. In practical applications, the inner peripheral wall of the installation disk 300 at the upper end of the slag discharge cylinder 100 and the outer peripheral wall of the slag discharge cylinder 100 can be assembled in a bonding and fixing manner through a bonding material. In order to improve the installation stability of the slag discharge cylinder, a docking boss 330 that surrounds the slag discharge cylinder and protrudes from the upper end of the installation disk is provided on the inner peripheral wall of the installation disk 300 at the lower end of the slag discharge cylinder 100. The setting of the docking boss 330 can stably insert the slag discharge cylinder, thereby avoiding the offset of the slag discharge cylinder 100 and having higher stability.

[0023] As Figure 1 and Figure 2 shown in the figure, in order to improve the installation stability of the connection between the connecting sleeve 200 and the installation disk 300, an adjusting fixing buckle 500 is provided on the fixing hoop 400 in this embodiment. The fixing buckle is used to tighten the fixing hoop 400 and is convenient for disassembly; at the same time, anti-slip teeth are arranged in a circumferential manner on the inner side surface of the fixing hoop 400. The setting of the anti-slip tooth structure increases the friction between the fixing hoop 400 and the connecting sleeve 200 and plays an anti-detachment role; in addition, a limiting ring groove 320 arranged around the outer periphery of the installation disk 300 is provided on the outer periphery of the installation disk 300, and the end of the connecting sleeve 200 and the fixing hoop 400 can be clamped into the limiting ring groove 320. In this way, after the fixing hoop 400 is clamped into the limiting sliding groove, the anti-detachment effect of the connecting sleeve 200 is further improved, and the installation of the connecting sleeve 200 is more stable.

[0024] As Figure 1 and Figure 2As shown, the connecting sleeve 200 provided in this embodiment includes two laminated reinforced fluororubber layers, and a 304 stainless steel mesh layer is provided between the two reinforced fluororubber layers; an aramid fabric layer is provided in the reinforced fluororubber layer. Since the connecting sleeve 200 has two reinforced fluororubber layers, as well as a stainless steel mesh and an aramid fabric layer, the structural strength, corrosion resistance and high temperature resistance of the connecting sleeve 200 are significantly improved after compounding, and its service life is longer; the installation and fixation adopt a fixed ring structure, which saves costs and simplifies the installation method, and has the characteristics of convenient and stable installation. In this embodiment, a refractory paint coating is also sprayed on the surface of the connecting sleeve 200 to improve the fire prevention effect and prevent the connecting sleeve 200 from being damaged by high-temperature cinder.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A coal mill slag box anti-blocking device, characterized in that; It comprises a slag discharge cylinder (100) and a connecting sleeve (200); The outer side of the slag discharge barrel (100) is sleeved with mounting plates (300) arranged in an upper and lower interval, and the mounting plates (300) are provided with fixing holes (310) arranged around the slag discharge barrel (100); a connecting sleeve (200) is also provided between the two mounting plates (300), and the upper and lower ends of the connecting sleeve (200) are sleeved with fixing hoops (400) for fixing the connecting sleeve (200) to the outer periphery of the mounting plates (300).

2. The anti-blocking device for coal mill slag box according to claim 1, characterized in that: The fixing hoop (400) is provided with an adjustment fixing buckle (500).

3. The anti-blocking device for coal mill slag box according to claim 1, characterized in that: The inner side surface of the fixing hoop (400) is provided with anti-slip teeth arranged circumferentially.

4. The coal mill slag box anti-blocking device according to claim 1, characterized in that: The inner peripheral wall of the mounting plate (300) located at the lower end of the slag discharge barrel (100) is provided with a docking boss (330) arranged around the slag discharge barrel (100) and protruding from the upper end of the mounting plate (300).

5. The anti-blocking device for coal mill slag box according to claim 1, characterized in that: The outer circumference of the mounting plate (300) is provided with a limiting ring groove (320) arranged around the outer circumference of the mounting plate (300), and the end of the connecting sleeve (200) and the fixing hoop (400) can be inserted into the limiting ring groove (320).

6. The device for preventing slag box of a coal mill from blocking according to claim 1, characterized in that: Each fixing hole (310) of the mounting plate (300) is provided with a fixing bolt.

7. The anti-blocking device for coal mill slag box according to claim 1, characterized in that: The connecting sleeve (200) comprises two reinforced fluororubber layers arranged in a laminated manner, a 304 stainless steel mesh layer is provided between the two reinforced fluororubber layers, and an aramid cloth layer is provided inside the reinforced fluororubber layer.

8. The device for preventing slag box of a coal mill from blocking according to claim 7, characterized in that: The surface of the connecting sleeve (200) is sprayed with a fire-resistant paint coating.

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