An online blockage clearing device

Abstract

The utility model discloses an online clearing device, which relates to the technical field of medium-speed coal mills. The utility model comprises a coal mill slag discharge pipe, which is fixed to the coal mill body, an observation window is provided on one side of the slag discharge pipe, and a clearing assembly is provided on one side of the slag discharge pipe, and the clearing assembly is located below the observation window. The utility model provides an online clearing device, which greatly improves the working efficiency of the coal mill by online cleaning of coke and debris in the coal mill slag discharge pipe without stopping the machine; it maximizes the personal safety of operators through zero-leakage clearing; and it effectively improves the sanitation of the working environment.

Description

Technical Field

[0001] The utility model relates to the technical field of slag removal for medium-speed coal mills, in particular to an online blockage clearing device. Background Art

[0002] The characteristic of medium-speed coal mill is that the ground coal powder is transported to the boiler through pressurized hot air to burn and generate heat, while some stones, gun wires, wood, coke blocks and other debris that cannot be crushed are discharged from the coal mill body through the coal mill slag discharge pipe.

[0003] Because the medium-speed coal mill slag discharge pipe has a certain amount of pressure hot air, under this premise, once the coal mill slag discharge pipe is blocked, it becomes very difficult to clear the blockage. In order to avoid harm to the slag cleaning personnel during the blockage cleaning work, the traditional blockage cleaning method is to shut down the coal mill, turn off the pressure hot air and then clean it, which directly affects the normal production of the coal mill. To solve the above problems, this patent provides a new online blockage cleaning technology solution that does not require shutdown for slag cleaning. Utility Model Content

[0004] The online blockage clearing device specifically comprises a slag discharge pipe fixedly connected to the bottom of the coal mill, an observation window, and a blockage clearing component;

[0005] The clearing assembly consists of a bearing seat, a spherical bearing, a swing sleeve, a movable clearing drill rod, a lip-shaped rubber sealing ring, a rubber protective sleeve and a ball valve.

[0006] Furthermore, an observation window is provided on one side of the coal mill slag discharge pipe fixedly connected to the bottom of the coal mill to facilitate observation of the blockage situation in the pipe. A clearing assembly is provided on one side of the coal mill slag discharge pipe, and the clearing assembly is located below the observation window.

[0007] Furthermore, the bearing seat of the clearing assembly is welded to the coal mill slag discharge pipe, and a spherical bearing is installed on the inner diameter of the bearing seat. The inner ring of the spherical bearing is fixedly connected to a swing sleeve, and the swing sleeve and the clearing drill rod are clearance-matched and can move freely forward and backward relative to each other.

[0008] Furthermore, by providing a certain swing angle activity space between the inner ring of the spherical bearing and the bearing seat, all-round cleaning of the pipeline can be achieved in all directions, up, down, left, and right.

[0009] Furthermore, a lip-shaped rubber sealing ring is provided in the gap between the swing sleeve and the plugging removal drill rod. The outer diameter of the lip-shaped rubber sealing ring is fixedly connected to the inner diameter of the swing sleeve, and the inner diameter is elastically contacted and connected to the plugging removal drill rod. The lip-shaped sealing ring is used to effectively prevent the hot air inside the coal mill from overflowing and injuring people during the plugging removal process, and can also ensure the free impact and slag removal activity of the plugging removal drill rod in the slag discharge pipe.

[0010] Furthermore, the clearing assembly further comprises a rubber protective sleeve, which wraps the bearing seat, the swing sleeve and the spherical bearing. The significance of the rubber protective sleeve is that it can adapt well to the swing of the clearing rod through its own deformation, and further ensures the hot air leakage of the microscopic gap between the inner and outer rings of the spherical bearing, thus achieving a truly online zero-leakage clearing work.

[0011] Furthermore, the clearing assembly further comprises a ball valve, which is threadedly connected to the outer end of the swing sleeve. Through the rapid closing of the ball valve, the hot air leakage can be minimized when the clearing drill rod is withdrawn.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides an online blockage clearing device, which can clear coke and sundries in a slag discharge pipe of a coal mill online without stopping the machine, thereby greatly improving the working efficiency of the coal mill.

[0014] The utility model provides an online blockage clearing device which ensures the personal safety of operators to the greatest extent through zero-leakage blockage clearing.

[0015] The utility model provides an online blockage clearing device, which effectively improves the sanitation of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an online blockage clearing device provided by the utility model;

[0018] Figure 2 A partially enlarged structural schematic diagram of an online blockage clearing device provided by the utility model;

[0019] Figure 3 A schematic diagram of the free swing of a clearing drill rod of an online clearing device provided by the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Slag discharge pipe; 2. Observation window; 3. Clearing assembly; 4. Bearing seat; 5. Spherical bearing; 6. Movable clearing rod; 7. Swing sleeve; 8. Lip-shaped rubber sealing ring; 9. Rubber protective sleeve; 10. Ball valve. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] As described in the background technology, since the medium-speed coal mill slag discharge pipe has a certain amount of pressurized hot air, once the pipe is blocked, it will be very difficult to clear the blockage. In order to avoid harm to the slag cleaning personnel during the blockage cleaning work, the traditional blockage cleaning method is to shut down the coal mill, turn off the pressurized hot air and then clean it, which directly affects the normal production of the coal mill. To solve the above problems, this patent provides a new online blockage cleaning technology solution that does not require shutdown for slag cleaning.

[0024] Embodiment 1:

[0025] Please refer to Figure 1-Figure 3 An online clearing device specifically comprises a slag discharge pipe 1 fixedly connected to the bottom of a coal mill, an observation window 2, and a clearing assembly 3. The clearing assembly 3 is composed of a bearing seat 4, a spherical bearing 5, a swing sleeve 7, a movable clearing rod 6, a lip-shaped rubber sealing ring 8, a rubber protective sleeve 9, and a ball valve 10.

[0026] An observation window is provided on one side of the coal mill slag discharge pipe 1 fixedly connected to the bottom of the coal mill to facilitate observation of the blockage situation in the pipe. A clearing assembly 3 is provided on one side of the coal mill slag discharge pipe 1, and the clearing assembly 3 is located below the observation window 2.

[0027] The bearing seat 4 of the clearing assembly 3 is welded to the coal mill slag discharge pipe 1. The inner diameter of the bearing seat 4 is installed with a spherical bearing 5. The inner ring of the spherical bearing 5 is fixedly connected to a swing sleeve 7. The swing sleeve 7 and the clearing drill rod 6 are clearance-matched and can move freely forward and backward relative to each other.

[0028] A lip-shaped rubber seal ring 8 is provided in the gap between the swing sleeve 7 and the plugging removal drill rod 6. The outer diameter of the lip-shaped rubber seal ring 8 is fixedly connected to the inner diameter of the swing sleeve 7, and the inner diameter of the lip-shaped rubber seal ring 8 is elastically contacted and connected to the plugging removal drill rod 6. The lip-shaped seal ring 8 has the function of better preventing one-way leakage of fluid. The opening of the lip-shaped seal ring 8 is installed toward the coal mill, which effectively prevents the internal hot air leakage of the coal mill from injuring people during the plugging removal process, and can ensure the free impact and slag removal activity of the plugging removal drill rod 6 in the slag discharge pipe.

[0029] A certain swing angle of movement space is provided between the inner ring of the bearing of the joint 5 and the bearing seat 4, so that the interior of the pipeline 1 can be cleaned in all directions up, down, left, and right.

[0030] The rubber protective sleeve 9 of the clearing assembly 3 wraps the bearing seat 4, the swing sleeve 7 and the spherical bearing 5. The significance of the rubber protective sleeve 9 is that it can adapt well to the swing of the clearing drill rod 6 through its own deformation, and further ensures the hot air leakage of the microscopic gap between the inner and outer rings of the spherical bearing 5, realizing the real online zero leakage clearing work.

[0031] The clearing assembly 3 further comprises a ball valve 10, which is threadedly connected to the outer end of the swing sleeve 7. By quickly closing the ball valve 10, the hot air leakage can be minimized when the clearing drill rod 6 is withdrawn.

Claims

1. An online blockage clearing device, characterized in that: The online blockage clearing device comprises a slag discharge pipe (1) fixedly connected to the bottom of the coal mill, an observation window (2), and a blockage clearing component (3); The clearing assembly (3) is composed of a bearing seat (4), a joint bearing (5), a swing sleeve (7), a movable clearing drill rod (6), a lip-shaped rubber sealing ring (8), a rubber protective sleeve (9) and a ball valve (10).

2. The online blockage clearing device according to claim 1, characterized in that: An observation window (2) is provided on one side of a coal mill slag discharge pipe (1) fixedly connected to the bottom of the coal mill, and a blockage clearing component (3) is provided on one side of the coal mill slag discharge pipe (1), and the blockage clearing component (3) is located below the observation window (2).

3. The online blockage clearing device according to claim 2, characterized in that: The bearing seat (4) of the clearing assembly (3) is welded to the coal mill slag discharge pipe (1), and a spherical bearing (5) is installed on the inner diameter of the bearing seat (4). The inner ring of the spherical bearing (5) is fixedly connected to a swing sleeve (7). The swing sleeve (7) and the clearing drill rod (6) are clearance-matched and can move freely forward and backward relative to each other.

4. The online blockage clearing device according to claim 2, characterized in that: A lip-shaped rubber sealing ring (8) is provided in the gap between the swing sleeve (7) and the clearing drill rod (6); the outer diameter of the lip-shaped rubber sealing ring (8) is fixedly connected to the inner diameter of the swing sleeve (7), and the inner diameter of the lip-shaped rubber sealing ring (8) is elastically contacted and connected to the clearing drill rod (6).

5. The online blockage clearing device according to claim 2, characterized in that: There is a swing angle space of 0-40 degrees between the inner ring of the spherical bearing (5) and the bearing seat (4).

6. The online blockage clearing device according to claim 2, characterized in that: The blockage clearing assembly (3) further comprises a rubber protective sleeve (9), wherein the rubber protective sleeve (9) wraps the bearing seat (4), the swing sleeve (7) and the spherical bearing (5).

7. The online blockage clearing device according to claim 2, characterized in that: The blockage clearing assembly (3) further comprises a ball valve (10), wherein the ball valve (10) is threadedly connected to the outer end of the swing sleeve (7).

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