Wear-resistant deslagging bin structure of coal mill

Abstract

The utility model discloses a wear-resistant slag discharge bin structure of a coal mill, which comprises a slag discharge bin shell, a millstone arranged in the center of the slag discharge bin shell, a static ring surrounding the inner wall of the slag discharge bin shell, a baffle arranged below the static ring and a storage box arranged below the baffle, and the baffle is connected with a rotating shaft of the slag discharge bin shell. A buffer device is arranged between the baffle and the deslagging bin shell; the slag discharging bin is simple in structure, convenient to operate and excellent in wear resistance, the wear resistance of the slag discharging bin is effectively improved, the service life of the slag discharging bin is prolonged, the impact force of waste slag is offset through the elastic force of the spring through the cooperation of the baffle and the buffering device, and the service life of the slag discharging bin is prolonged. The slag discharging bin can be protected, the service life of the baffle is greatly prolonged, the frequency of replacing the baffle is reduced, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coal mill, in particular to a coal mill wear -resisting slag discharge bin structure. BACKGROUND

[0002] In the working process of the coal mill, the slag discharge bin as an important part of the coal mill directly affects the overall efficiency and safety of the coal mill. The existing coal mill slag discharge bin is mostly made of ordinary steel plate. This material is severely worn and has a short service life when it is subjected to long-term impact of hard particles and impurities in the coal powder.

[0003] Among them, the utility model discloses a kind of coal mill wear -resisting slag discharge bin structure of Chinese utility model patent with patent No.CN208526778U, the utility model discloses a kind of coal mill wear -resisting slag discharge bin structure, including slag discharge bin shell, standing in the center of slag discharge bin shell and being distributed around the grinding disc of static ring fixed in slag discharge bin shell, baffle being placed in the lower end of static ring and being C degree angle with slag discharge bin shell, scraper being fixed in the lower part of grinding disc, lining plate being placed below baffle, the lining plate is fixed on the slag discharge bin shell by bolt, the lining plate is block splicing structure, the lining plate camber is completely attached with the slag discharge bin shell, the C angle is greater than or equal to 30 degrees, less than or equal to 45 degrees. By fixing lining plate on shell, reduce the wear of slag discharge bin shell, adopt countersunk head with tenon bolt to ensure that the bolt head is lower than the surface of lining plate after installation, reduce bolt wear, prolong service life of bolt;Lining plate adopts block splicing structure, facilitates installation and replacement;Install baffle to make waste residue landing point to the position of the middle of scraper, reduce the particle between scraper and shell, reduce wear.

[0004] But the baffle of the utility model is subjected to the greatest impact force of waste residue when in use, which is equivalent to transferring the force impacting on the shell to the baffle, so the baffle is severely worn and needs to be replaced frequently, which is time-consuming and laborious, so we need coal mill wear -resisting slag discharge bin structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of coal mill wear -resisting slag discharge bin structure, solve the problem of baffle wear that is very serious and inconvenient to replace in the above Beijing technology.

[0006] The utility model is implemented as follows: a kind of coal mill wear -resisting slag discharge bin structure, the device includes: slag discharge bin shell, grinding disc being placed in the center of the slag discharge bin shell, static ring being surrounded in the inner wall of slag discharge bin shell, baffle being placed below the static ring and receiving box being placed below the baffle, the baffle is connected with the rotation shaft of the slag discharge bin shell, and buffer device is arranged between the baffle and the slag discharge bin shell.

[0007] The further technical scheme of the utility model discloses: the buffer device includes: first buffer rod, second buffer rod and buffer spring, first buffer rod one end with baffle swing joint, first buffer rod's other end is placed in second buffer rod, be equipped with the cavity in second buffer rod, buffer spring is placed in the cavity of second buffer rod, buffer spring one end with the bottom surface connection of cavity, buffer spring's other end with the bottom surface connection of first buffer rod.

[0008] The further technical scheme of the utility model discloses: the lining is placed below the baffle.

[0009] The further technical scheme of the utility model discloses: the side of the storage box away from the baffle is arc structure.

[0010] The further technical scheme of the utility model discloses: the baffle and the lining are wear-resistant alloy material.

[0011] The further technical scheme of the utility model discloses: the first buffer rod bottom surface outer circle is equipped with the convex and radius is greater than the radius of second buffer rod opening.

[0012] The utility model discloses the beneficial effect: the utility model discloses simple structure, convenient operation, and excellent wear resistance: wear -resistant inner lining layer is made of high -strength wear -resistant alloy material, effectively improves the wear resistance of slag discharge bin, prolongs the service life of slag discharge bin, and through the cooperation of baffle and buffer device, the impact force of waste residue is cancelled through the elasticity of spring, not only can play the role of protecting slag discharge bin, and make the service life of baffle greatly increase, reduce the frequency of replacing baffle, save time and energy. DRAWINGS

[0013] Figure 1 It is the sectional view of the wear -resistant slag discharge bin structure of coal mill that the utility model provides;

[0014] Figure 2 It is the enlarged view of A of the wear -resistant slag discharge bin structure of coal mill that the utility model provides;

[0015] Figure 3 It is the sectional view of the buffer device of the wear -resistant slag discharge bin structure of coal mill that the utility model provides.

[0016] Reference numerals: 1, grinding disc;2, static ring;3, slag discharge bin shell;4, baffle;5, lining;6, storage box;7, first buffer rod;8, second buffer rod;9, buffer spring. Specific implementation

[0017] The advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present application. The present application can also be implemented or applied in other different specific embodiments, and the details in the present application can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0018] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present application are only used to understand and read the content disclosed in the present application by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present application are only for the convenience of clear description, and are not used to limit the scope of the implementation of the present application. The change or adjustment of the relative relationship without substantially changing the technical content is also considered as the scope of the implementation of the present application.

[0019] Embodiment one: Figure 1 , Figure 2 , Figure 3 shows a kind of Figure 2The utility model provides a kind of coal mill wear-resistant slag discharge bin structure of the utility model, the device includes: slag discharge bin shell 3, the center of the millstone of being placed in the slag discharge bin shell 3, the static ring 2 of being surrounded in the inner wall of slag discharge bin shell 3, the baffle 4 of being placed in the static ring 2 below and the storage box 6 of being placed in the baffle 4 below, the baffle 4 is connected with the rotating shaft of the slag discharge bin shell 3, and the baffle is equipped with buffer device between the slag discharge bin shell 3.The buffer device includes: first buffer rod 7, second buffer rod 8 and buffer spring 9, one end of the first buffer rod 7 is movably connected with the baffle 4, the other end of the first buffer rod 7 is placed in the second buffer rod 8, the second buffer rod 8 is equipped with cavity, the buffer spring 9 is placed in the cavity of the second buffer rod 8, one end of the buffer spring 9 is connected with the bottom surface of the cavity, and the other end of the buffer spring is connected with the bottom surface of the first buffer rod 7.The gasket 5 is equipped on the inner wall of the slag discharge bin shell 3, and the gasket 5 is placed below the baffle 4.The side of the storage box 6 away from the baffle 4 is arc structure.The baffle 4 and the gasket 5 are wear-resistant alloy material.The outer circle of the bottom surface of the first buffer rod 7 is equipped with protrusion and radius is greater than the radius of the opening of the second buffer rod 8.The utility model has excellent wear resistance: wear-resistant inner lining layer made of high-strength wear-resistant alloy material effectively improves the wear resistance of slag discharge bin, prolongs the service life of slag discharge bin, the impact force of waste residue is offset by the elasticity of spring through the cooperation of baffle and buffer device, not only can play the role of protecting slag discharge bin, but also greatly increases the service life of baffle, reduces the frequency of replacing baffle, saves time and effort.

[0020] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement and improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coal mill wear resistant discharge bin structure, characterized in that, The device comprises a slag discharge bin shell (3), a grinding disc placed in the center of the slag discharge bin shell (3), a static ring (2) surrounding the inner wall of the slag discharge bin shell (3), a baffle (4) placed below the static ring (2), and a storage box (6) placed below the baffle (4), the baffle (4) is connected with the rotating shaft of the slag discharge bin shell (3), and a buffer device is arranged between the baffle and the slag discharge bin shell (3).

2. A coal mill wear resistant discharge pocket structure according to claim 1, characterized in that, The buffer device comprises a first buffer rod (7), a second buffer rod (8) and a buffer spring (9), one end of the first buffer rod (7) is movably connected with the baffle (4), the other end of the first buffer rod (7) is placed in the second buffer rod (8), the second buffer rod (8) is provided with a cavity, the buffer spring (9) is placed in the cavity of the second buffer rod (8), one end of the buffer spring (9) is connected with the bottom surface of the cavity, and the other end of the buffer spring is connected with the bottom surface of the first buffer rod (7).

3. A coal mill wear resistant discharge pocket structure according to claim 1, characterized in that, A gasket (5) is arranged on the inner wall of the slag discharge bin shell (3), and the gasket (5) is placed below the baffle (4).

4. A coal mill wear resistant discharge pocket structure according to claim 1, characterized in that, The side of the storage box (6) away from the baffle (4) is in an arc shape.

5. A coal mill wear resistant discharge pocket structure according to claim 3, characterized in that, The baffle (4) and the gasket (5) are made of wear-resistant alloy material.

6. A coal mill wear resistant discharge pocket structure according to claim 2, characterized in that, The outer circle of the bottom surface of the first buffer rod (7) is provided with a protrusion, and the radius of the protrusion is greater than the radius of the opening of the second buffer rod (8).

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