Sealing device for coal mill base

Abstract

The utility model provides a coal mill base sealing device, which relates to the technical field of coal mills, and comprises a base main body, a rotating shaft is rotatably connected in the base main body, connecting sleeves are fixed on the outer wall of the rotating shaft, check rings are inserted at two ends of the two connecting sleeves, a fixed frame is fixed at the bottom end of the base main body, and the fixed frame is fixed on the base main body. A clamping structure used for fixing the positions of the two check rings is arranged in the fixing frame. Two matched check rings are inserted into the outer wall of the rotating shaft, the two check rings can completely wrap the outer side of the connecting sleeve, the top ends of the two check rings are arranged in an opening formed in the bottom end of the base body, the connecting position of the base body and the rotating shaft is located between the check rings and the connecting sleeve, leaked powder can be blocked, and the powder leakage phenomenon is avoided. And through operation of a motor, a two-way screw can be driven to rotate, so that two moving blocks move in the opposite directions or in the opposite directions under limiting of limiting columns, the check rings can be clamped and limited, and the effect of mounting and dismounting the check rings is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mill technical field especially relates to coal mill base sealing device. BACKGROUND

[0002] Coal mill is the mechanical that will coal block break and grind into coal powder, it is important auxiliary equipment of coal powder furnace. There are vertical mill, high pressure suspension roller mill, medium speed micro powder mill, super pressure trapezoidal mill, raymond mill etc. model. Coal grinding process is the process that coal is broken and its surface area increases constantly. To increase new surface area, must overcome the binding force between solid molecules, thus need to consume energy. Coal is ground into coal powder in coal mill, mainly through crushing, breaking and rubbing three ways.

[0003] At present, the coal mill base sealing device in the prior art has poor sealing effect, the sealing ring structure is in contact with the main shaft for a long time, thereby causing the sealing ring to be abraded, thus causing dust and coal powder to leak out, and the use of the coal mill is inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model discloses a coal mill base sealing device, which solves the problems of poor sealing effect, long-term contact between the sealing ring structure and the main shaft, abrasion of the sealing ring, dust and coal powder leakage and inconvenience in use of the coal mill.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coal mill base sealing device, comprising a base body, a rotating shaft is rotatably connected in the base body, a connecting sleeve is fixed on the outer wall of the rotating shaft, a stop ring is inserted at both ends of the two connecting sleeves, a fixed frame is fixed at the bottom end of the base body, and a clamping structure for fixing the positions of the two stop rings is arranged in the fixed frame.

[0006] Preferably, the clamping structure comprises a motor arranged on one side of the fixed frame, the output end of the motor penetrates through one side of the fixed frame and is fixed with a bidirectional screw rod, the outer wall of the bidirectional screw rod is threadedly connected with a moving block at both ends, the moving blocks away from the bidirectional screw rod are jointly and slidably connected with a limiting column at one end, the opposite ends of the two moving blocks are fixed with clamping plates, and the opposite ends of the two clamping plates are abutted against the outer walls of the two connecting sleeves.

[0007] Preferably, the opposite ends of the two clamping plates are fixed with clamping columns, and the outer walls of the connecting sleeves are both provided with clamping holes matched with the clamping columns.

[0008] Preferably, one end of the fixed frame is fixed with a support frame, the motor is installed at the end of the support frame facing the fixed frame, the end of the bidirectional screw rod away from the motor is rotatably connected with the fixed frame, and the limiting column is fixed at both ends with the fixed frame.

[0009] Preferably, the outer wall of the connecting sleeve is provided with a clamping groove matched with the check ring, and the two ends of the check ring are fixed with a sealing block, and the two ends of the other check ring are provided with a sealing groove matched with the sealing block.

[0010] Preferably, the bottom end of the base body is provided with an opening matched with the two check rings.

[0011] Compared with the prior art, the advantages and positive effects of the utility model lie in that:

[0012] In the utility model, the outer wall of the rotating shaft is inserted with two matched check rings, the two check rings can completely wrap the outside of the connecting sleeve, the top end of the two check rings is arranged in the opening of the bottom end of the base body, the connecting part of the base body and the rotating shaft is between the check rings and the connecting sleeve, the leaked powder can be blocked and collected and treated, the rotating of the bidirectional screw can be driven by the operation of the motor, the two moving blocks move towards each other or move in opposite directions under the limitation of the limiting column, when the two moving blocks move towards each other, the two clamping columns are inserted into the clamping holes of the outer wall of the two check rings, the position of the check ring can be limited and fixed, so that the check ring can be stably inserted on the connecting sleeve, the two clamping plates cover the gap of the two check rings, the effect of secondary sealing is achieved, when the two moving blocks move in opposite directions, the two check rings are not limited and clamped, the two check rings can be disassembled and treated at any time, on the one hand, the worn check ring can be replaced, on the other hand, the powder in the check ring and the connecting sleeve can be cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A perspective view of the coal mill base sealing device is provided for the utility model;

[0014] Figure 2 A sectional view of the coal mill base sealing device is provided for the utility model;

[0015] Figure 3 A check ring internal structure schematic view of the coal mill base sealing device is provided for the utility model;

[0016] Figure 4 A clamping structure schematic view of the coal mill base sealing device is provided for the utility model.

[0017] Legend: 1, base body; 2, rotating shaft; 3, connecting sleeve; 4, clamping groove; 5, check ring; 6, sealing block; 7, sealing groove; 8, opening; 9, fixing frame; 10, clamping structure; 1001, motor; 1002, bidirectional screw; 1003, moving block; 1004, limiting column; 1005, clamping plate; 11, clamping column; 12, clamping hole; 13, supporting frame. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figures 1-4 As shown, this utility model provides a coal mill base sealing device, including a base body 1, a rotating shaft 2 rotatably connected inside the base body 1, a connecting sleeve 3 fixed on the outer wall of the rotating shaft 2, and a retaining ring 5 inserted into both ends of the two connecting sleeves 3. A fixing frame 9 is fixed at the bottom end of the base body 1, and a clamping structure 10 for fixing the position of the two retaining rings 5 ​​is provided inside the fixing frame 9.

[0021] The effect achieved by the entire embodiment 1 is that two matching retaining rings 5 ​​are inserted into the outer wall of the rotating shaft 2. The two retaining rings 5 ​​can completely cover the outer side of the connecting sleeve 3, and the top of the two retaining rings 5 ​​is located in the opening 8 at the bottom of the base body 1, so that the connection between the base body 1 and the rotating shaft 2 is between the retaining rings 5 ​​and the connecting sleeve 3. This can block the leakage of powder and collect it in a concentrated manner. Through the operation of the clamping structure 10, the two retaining rings 5 ​​can be clamped and limited.

[0022] Example 2, as Figures 1-4As shown, the clamping structure 10 includes a motor 1001 provided on one side of the fixed frame 9, the output end of the motor 1001 penetrates one side of the fixed frame 9 and is fixed with a bidirectional screw rod 1002, both ends of the outer wall of the bidirectional screw rod 1002 are threadedly connected with a moving block 1003, the ends of the two moving blocks 1003 away from the bidirectional screw rod 1002 are commonly connected with a limiting column 1004, the opposite ends of the two moving blocks 1003 are fixed with a clamping plate 1005, the opposite ends of the two clamping plates 1005 are abutted with the outer walls of the two connecting sleeves 3, the opposite ends of the two clamping plates 1005 are fixed with a clamping column 11, the outer wall of the connecting sleeve 3 is provided with a clamping hole 12 matched with the clamping column 11, one end of the fixed frame 9 is fixed with a support frame 13, the motor 1001 is installed at the end of the support frame 13 facing the fixed frame 9, the end of the bidirectional screw rod 1002 away from the motor 1001 is rotatably connected with the fixed frame 9, both ends of the limiting column 1004 are fixed with the fixed frame 9, the outer wall of the connecting sleeve 3 is provided with a clamping groove 4 matched with the check ring 5, both ends of the check ring 5 facing the other check ring 5 are fixed with a sealing block 6, both ends of the other check ring 5 are provided with a sealing groove 7 matched with the sealing block 6, and the bottom end of the base body 1 is provided with an opening 8 matched with the two check rings 5.

[0023] The effect achieved by the whole embodiment 2 is that through the operation of the motor 1001, the bidirectional screw rod 1002 can be driven to rotate, so that the two moving blocks 1003 move towards or away from each other under the limitation of the limiting column 1004, when the two moving blocks 1003 move towards each other, the two clamping columns 11 will be inserted into the clamping holes 12 provided in the outer walls of the two check rings 5, so as to limit and fix the positions of the check rings 5, so that the check rings 5 can be stably inserted on the connecting sleeves 3, and the two clamping plates 1005 cover the gaps of the two check rings 5, achieving the effect of secondary sealing, when the two moving blocks 1003 move away from each other, the two check rings 5 will not be limited and clamped, and the two check rings 5 can be disassembled at any time, on the one hand, the worn check rings 5 can be replaced, and on the other hand, the powder in the check rings 5 and the connecting sleeves 3 can be cleaned, through the arrangement of the sealing block 6 and the sealing groove 7, when the two check rings 5 are clamped with each other, the sealing block 6 and the sealing groove 7 can achieve the first sealing treatment.

[0024] Working principle: when the device is used, two matched check rings 5 are inserted on the outer wall of the rotating shaft 2, the two check rings 5 can completely wrap the outer side of the connecting sleeve 3, and the top end of the two check rings 5 is arranged in the opening 8 at the bottom end of the base body 1, so that the connection between the base body 1 and the rotating shaft 2 is between the check ring 5 and the connecting sleeve 3, which can block and collect the leaked powder for processing, and through the operation of the motor 1001, the bidirectional screw 1002 can be driven to rotate, so that the two moving blocks 1003 move towards or away from each other under the limiting of the limiting column 1004, when the two moving blocks 1003 move towards each other, the two clamping columns 11 will be inserted into the clamping hole 12 arranged on the outer wall of the two check rings 5, which can limit and fix the position of the check ring 5, so that the check ring 5 can be stably inserted on the connecting sleeve 3, and the two clamping plates 1005 cover the gap between the two check rings 5, achieving the effect of secondary sealing, when the two moving blocks 1003 move away from each other, the two check rings 5 will not be limited and clamped, and the two check rings 5 can be disassembled at any time, on the one hand, the worn check ring 5 can be replaced, and on the other hand, the powder in the check ring 5 and the connecting sleeve 3 can be cleaned.

[0025] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application still belongs to the protection scope of the present application.

Claims

1. A seal for a coal mill base, comprising a base body (1), characterised in that: The base body (1) is rotatably connected with a rotating shaft (2), the outer wall of the rotating shaft (2) is fixedly connected with a connecting sleeve (3), the two ends of the two connecting sleeves (3) are respectively inserted with a check ring (5), the bottom end of the base body (1) is fixedly connected with a fixing frame (9), and the fixing frame (9) is provided with a clamping structure (10) for fixing the positions of the two check rings (5).

2. The mill base seal apparatus of claim 1, wherein: The clamping structure (10) comprises a motor (1001) arranged on one side of the fixing frame (9), the output end of the motor (1001) penetrates through one side of the fixing frame (9) and is fixedly connected with a bidirectional screw rod (1002), the outer wall of the bidirectional screw rod (1002) is threadedly connected with a moving block (1003) at both ends, the moving block (1003) is slidably connected with a limiting column (1004) at the end away from the bidirectional screw rod (1002), the opposite end of the moving block (1003) is fixedly connected with a clamping plate (1005), and the opposite end of the clamping plate (1005) is abutted with the outer wall of the connecting sleeve (3).

3. The mill base seal apparatus of claim 2, wherein: The opposite end of the clamping plate (1005) is fixedly connected with a clamping column (11), and the outer wall of the connecting sleeve (3) is provided with a clamping hole (12) matched with the clamping column (11).

4. The mill base seal apparatus of claim 2, wherein: One end of the fixing frame (9) is fixedly connected with a supporting frame (13), the motor (1001) is installed at the end of the supporting frame (13) facing the fixing frame (9), the end of the bidirectional screw rod (1002) away from the motor (1001) is rotatably connected with the fixing frame (9), and the two ends of the limiting column (1004) are fixedly connected with the fixing frame (9).

5. The mill base seal apparatus of claim 1, wherein: The outer wall of the connecting sleeve (3) is provided with a clamping groove (4) matched with the check ring (5), one of the check rings (5) is fixedly connected with a sealing block (6) at the two ends facing the other check ring (5), and the other check ring (5) is provided with a sealing groove (7) matched with the sealing block (6) at the two ends.

6. The mill base seal apparatus of claim 1, wherein: The bottom end of the base body (1) is provided with an opening (8) matched with the two check rings (5).

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