Improved rotary kiln mouth pouring structure

Abstract

The utility model belongs to the technical field of rotary kilns, and particularly discloses an improved rotary kiln mouth pouring structure which comprises a cylinder body, one end of the cylinder body is detachably connected with kiln mouth back iron, the kiln mouth back iron is located in the cylinder body, a pouring mold is arranged in the cylinder body, pouring materials are poured in the pouring mold, and the pouring materials are arranged in the cylinder body. And the kilneye back iron is wrapped by the castable. In order to solve the problems that in the prior art, due to the fact that back iron is large in weight, maintenance and replacement are difficult, long-time shutdown for maintenance and replacement are needed, and production is affected, the effects that the back iron of the kilneye is light and easy to install are achieved by changing the material of the back iron of the kilneye and pouring the kilneye through corundum mullite castable. The problems that maintenance and replacement are difficult due to the fact that back iron is large in weight, and production is affected are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary kiln technical field, concretely relates to an improved rotary kiln mouth pouring structure. BACKGROUND

[0002] The kiln mouth is an important part of the rotary kiln, and is prone to damage due to long-term contact with material friction and mechanical thermal stress. To ensure the service life of the rotary kiln, a pouring layer is usually provided at the kiln mouth of the rotary kiln to protect the kiln mouth position. During routine maintenance of the rotary kiln, maintenance of the kiln mouth protection iron is one of the important tasks. It is located at the rotary kiln mouth part and is mainly used to protect the metal structure and prevent cement from accumulating on the kiln mouth. The protection iron is often used in environmental protection systems and furnace wall support systems. Due to the extremely high temperature inside the rotary kiln, long-term high temperature environment will also cause wear and tear and aging of the metal structure. The presence of the protection iron can effectively reduce this direct contact, thereby prolonging the service life of the rotary kiln.

[0003] However, the existing rotary kiln mouth protection iron is usually made of heat-resistant steel material, and each piece of protection iron weighs about 278 kg. Due to the large weight, it is difficult to replace during maintenance, and four workers need 48 hours to complete the replacement of the kiln mouth protection iron, which is time-consuming and has a high safety risk. The protection iron used at present is affected by the production process, and after about 6 months of use, the bolts are oxidized and broken by high temperature, and after 12 months of use, the castable falls off and the protection iron cracks, causing the protection iron to fall off, resulting in a short service life. It needs to be replaced every year, which affects the safe and stable operation of the rotary kiln system and also brings huge maintenance costs.

[0004] Therefore, in order to solve the above problems, the utility model provides an improved rotary kiln mouth pouring structure to solve the problem of difficult maintenance and replacement caused by the large weight of the protection iron, thereby affecting production. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an improved rotary kiln mouth pouring structure to solve the problem of difficult maintenance and replacement caused by the large weight of the protection iron, thereby affecting production.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: an improved rotary kiln mouth pouring structure, comprising a cylinder, a kiln mouth protection iron is detachably connected to the inner wall of one end of the cylinder, a pouring mold is arranged in the cylinder, a castable is poured in the pouring mold, and the kiln mouth protection iron is wrapped by the castable.

[0007] The utility model discloses a working principle lies in: when carrying out rotary kiln mouth pouring, first use bolt to fix the kiln mouth protection iron on the inner wall of the cylinder, then set up the pouring mold in the cylinder, make the kiln mouth protection iron be located in the cavity formed by pouring mold and cylinder, then carry out the pouring work of the pouring material in sections, and vibrate with the vibration rod at the same time of pouring, after pouring is completed, wait for the natural drying of pouring material and shape, and then can use.

[0008] The utility model discloses the beneficial effect lies in: the utility model discloses the mode for changing the material quality of kiln mouth protection iron and adopts corundum mullite pouring material to pour the kiln mouth to realize the effect that kiln mouth protection iron is light and easy to install, and then improves the replacement efficiency and service life of kiln mouth protection iron, avoids the capacity reduction caused by kiln mouth protection iron replacement long -time shutdown, makes the capacity get effective play, reduces the cost of kiln mouth protection iron purchase, and also effectively protects the kiln mouth cylinder.

[0009] Scheme two, this is the preferred basis scheme, the kiln mouth protection iron is composed of several steel sheets, two adjacent steel sheets are bolted, and the steel sheet is bolted with the cylinder; when the kiln mouth protection iron appears crack or needs to be replaced, the kiln mouth protection iron composed of several steel sheets is convenient for local replacement, thereby reducing the downtime of the equipment.

[0010] Scheme three, this is the preferred basis scheme, a plurality of anchor nails are welded on the steel sheet, the anchor nail is V-shaped, and the anchor nail is wrapped by pouring material; the V-shaped anchor nail can effectively fix the pouring material and the plastic material, ensure the stability and durability of the equipment lining, prevent the kiln mouth protection iron from falling off, thereby prolonging the service life of the rotary kiln mouth cylinder.

[0011] Scheme four, this is the preferred basis scheme, the material of the steel sheet is stainless steel; the kiln mouth protection iron made of stainless steel effectively reduces the weight of the kiln mouth protection iron, facilitates the installation of the staff, and reduces the labor intensity of the staff.

[0012] Scheme five, this is the preferred basis scheme, the pouring material is corundum mullite pouring material; the corundum mullite pouring material has excellent fire resistance and can operate stably for a long time in a high-temperature environment; at the same time, it also has high mechanical strength and can withstand the friction or impact of high-temperature solid materials or gas flow carrying solid powder, thereby effectively protecting the rotary kiln mouth cylinder and preventing the kiln mouth cylinder from forming a "horn mouth" hidden danger after being heated.

[0013] Scheme six, this is the preferred basis scheme, the thickness of the pouring material is higher than that of the kiln mouth protection iron by 50mm; the kiln mouth protection iron can be protected, and direct erosion of the kiln mouth protection iron by high-temperature flue gas can be effectively avoided. DRAWINGS

[0014] Fig. 1It is the utility model a kind of improved rotary kiln mouth pouring structure's perspective view;

[0015] Fig. 2 It is the utility model a kind of improved rotary kiln mouth pouring structure's section side view;

[0016] Fig. 3 It is the utility model a kind of improved rotary kiln mouth pouring structure's section front view. DETAILED DESCRIPTION

[0017] The utility model is further explained in detail by specific implementation ways as follows:

[0018] The reference signs in the drawings of the specification include: 1, cylinder body;2, kiln mouth iron guard;3, pouring mold;4, castable;5, steel plate;6, anchor nail.

[0019] As shown in Figs. 1 to 3 : an improved rotary kiln mouth pouring structure, including cylinder body 1, the inner wall of one end of cylinder body 1 is bolted with kiln mouth iron guard 2, kiln mouth iron guard 2 is composed of several steel plates 5, the material of steel plate 5 is stainless steel, several anchor nails 6 are welded on steel plate 5, anchor nail 6 is V-shaped, adjacent two steel plates 5 are bolted, steel plate 5 and cylinder body 1 are bolted, pouring mold 3 is arranged in cylinder body 1, castable 4 is poured in pouring mold 3, castable 4 is corundum mullite castable, the kiln mouth iron guard 2 and anchor nail 6 are wrapped by castable 4, the thickness of castable 4 is higher than kiln mouth iron guard 2 250mm.

[0020] The implementation mode of the embodiment is: when needing to carry out rotary kiln mouth pouring work, first, steel plate 5 is fixed on the inner wall of cylinder body 1 using bolt, then anchor nail 6 is welded on steel plate 5 in sections, then pouring mold 3 is built in cylinder body 1, so that kiln mouth iron guard 2 and anchor nail 6 are located in the cavity formed by pouring mold 3 and cylinder body 1, then pouring work of corundum mullite castable 4 is carried out in sections, while pouring, vibration rod is used to vibrate and make bubbles out, after pouring is completed, wait for castable to dry completely.

[0021] The above-mentioned is only the embodiment of the utility model, and the well-known specific structure and characteristics in scheme are not described too much here.It should be pointed out that, for those skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect and practicality of the utility model.The protection scope of the present application should be accurate with the content of its claims, and the specific implementation mode in the specification can be used to explain the content of claims.

Claims

1. An improved rotary kiln port casting structure, characterized by, The utility model relates to a kiln mouth protection iron, including cylinder (1), the inner wall of one end of cylinder (1) is detachably connected with kiln mouth protection iron (2), be equipped with pouring mold (3) in cylinder (1), pouring mold (4) is poured in pouring mold (3), kiln mouth protection iron (2) is wrapped by pouring material (4).

2. An improved rotary kiln entry pouring structure according to claim 1, wherein, The kiln mouth protection iron (2) is composed of several steel plates (5), the adjacent two steel plates (5) are bolted, and the steel plate (5) and the cylinder (1) are bolted.

3. An improved rotary kiln entry pouring structure according to claim 2, wherein, A plurality of anchor nails (6) are welded on the steel plate (5), the anchor nails (6) are V-shaped, and the anchor nails (6) are wrapped by the pouring material (4).

4. An improved rotary kiln entry pouring structure as claimed in claim 2 wherein, The steel plate (5) is made of stainless steel.

5. An improved rotary kiln entry pouring structure according to claim 1 wherein, The pouring material (4) is corundum mullite pouring material.

6. An improved rotary kiln entry pouring structure according to claim 1 wherein, The thickness of the pouring material (4) is 50mm higher than that of the kiln mouth protection iron (2).

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