Embedded cylinder sealing structure of coal water slurry rod mill

Abstract

The utility model discloses a coal water slurry rod mill embedded type cylinder sealing structure, which comprises a sleeve, a gasket, a pressing ring, a cylinder, a bolt and a lining plate sealing gasket, the lower end of the sleeve is provided with a sleeve, the upper part of the sleeve is provided with a groove I, the lower part of the pressing ring is provided with a groove II, and the groove I and the groove II are matched with the gasket; the cylinder body is provided with a bolt hole, and the lining plate is provided with a special-shaped stepped hole; the sleeve at the bottom of the sleeve is inserted into the bolt hole of the cylinder and is annularly welded on the cylinder, the gasket is arranged in the groove I of the sleeve, the pressing ring is pressed on the gasket, and the bolt sequentially penetrates through the special-shaped stepped hole in the lining plate, the sleeve of the sleeve, the gasket and the pressing ring and is fastened through the nut. According to the utility model, the sleeve ring is welded on the cylinder body, so that the influence of slurry leakage caused by abrasion of the cylinder body and enlargement of a bolt hole during operation of equipment is reduced; the inner convex sealing washer is placed in the sleeve and is pressed by the pressing ring, so that slurry leakage of a bolt hole is effectively prevented; and through combined connection, the lining plates are attached more tightly, sliding friction is reduced, and the service life of the barrel is prolonged.

Description

Technical Field

[0001] The utility model relates to a novel inlaid cylinder sealing structure of a water-coal slurry rod mill, belonging to the technical field of rod mills. Background Art

[0002] The cylinder is an important part of the water-coal slurry rod mill, which is mainly composed of a cylinder, a liner and various fasteners. Among them, the liner is fastened to the cylinder only by flat head bolts, and due to the low processing accuracy of the liner and installation errors, there will be a gap of 5 to 8 mm between the liner. When the mill is running, the liner will slide along the inner wall of the cylinder under the impact of the falling steel rod. The liner bolts will gradually be loosened or even broken under the action of alternating stress. Therefore, it is difficult for the liner and the cylinder to fit tightly together, which causes the slurry in the cylinder to enter the gap between the liner and the cylinder; and because the sliding of the liner can easily cause the cylinder to wear, the annular gap in the circumference of the cylinder often leaks. The bolt holes of the cylinder are also often enlarged due to wear, causing the cylinder seal to fail and leak slurry. Therefore, during the production of the project, it is necessary to stop frequently to repair and replace fasteners, which seriously affects the requirements of continuous production operations, and also affects the stability of the equipment body and the maintenance of environmental hygiene. In addition, the lubricating oil of the pinion and the large gear ring is also easily contaminated by the leaked slurry, which causes serious wear of the pinion and the large gear ring and shortens their service life. Therefore, taking necessary measures to reduce the leakage of the water-coal slurry rod mill will greatly improve production efficiency, reduce operating costs, and effectively achieve the requirements of green development. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a water-coal slurry rod mill embedded cylinder sealing structure for the defects of the prior art, so as to prevent the bolt hole from leaking slurry, reduce sliding friction and increase the service life of the cylinder.

[0004] In order to solve this technical problem, the utility model provides an inlaid cylinder sealing structure of a water-coal slurry rod mill, comprising a sleeve, a gasket, a pressure ring, a cylinder, bolts and a liner sealing gasket. The lower end of the sleeve is provided with a sleeve, the upper part is provided with a groove one, the lower part of the pressure ring is provided with a groove two, the groove one and the groove two are adapted to the gasket; the cylinder is provided with a bolt hole, and the liner is provided with a special-shaped stepped hole; the sleeve at the bottom of the sleeve is inserted into the bolt hole of the cylinder and is ring-welded on the cylinder, the gasket is placed in the groove one of the sleeve, the pressure ring is pressed on the gasket, and the bolts pass through the special-shaped stepped hole on the liner, the sleeve of the sleeve, the gasket and the pressure ring in sequence and are fastened by nuts.

[0005] A sealing gasket is arranged between the cylinder and the lining plate.

[0006] The sleeve is made of Q235A material and is ring-welded on the surface of the cylinder.

[0007] The gasket is made of acid and alkali resistant rubber material, is located inside the sleeve, is provided with a boss, and has sealing grooves on the upper and lower surfaces.

[0008] The pressing ring is made of Q235A material and is located on the upper part of the gasket.

[0009] The upper part of the special-shaped stepped hole of the lining plate is a curved surface and is in line contact with the bolt head.

[0010] Beneficial effects: The utility model welds the sleeve ring to the cylinder, which reduces the impact of leakage caused by cylinder wear and enlarged bolt holes during equipment operation; an inner convex sealing gasket is placed inside the sleeve and tightened by a pressure ring to effectively prevent leakage from the bolt holes; the liner is connected in a combined manner to make the liner fit more closely, reduce sliding friction, and increase the service life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the sleeve of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the gasket of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the pressing ring of the utility model.

[0015] In the figure: 1, sleeve; 2, gasket; 3, pressure ring; 4, cylinder; 5, bolt; 6, nut; 7, liner; 8, sealing gasket; 11, sleeve; 12, groove 1; 21, boss; 22, sealing groove; 31, groove 2; 71, special-shaped stepped hole. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1-Figure 4 As shown, the utility model provides an inlaid cylinder sealing structure of a water-coal slurry rod mill, comprising a sleeve 1, a gasket 2, a pressure ring 3, a cylinder 4, a bolt 5 and a liner 7 sealing gasket 8. The sleeve 1 is provided with a sleeve 11 at the lower end, a groove 12 is provided at the upper part, and a groove 2 31 is provided at the lower part of the pressure ring 3. The groove 12 and the groove 2 31 are adapted to the gasket 2; the cylinder 4 is provided with a bolt hole, and the liner 7 is provided with a special-shaped stepped hole 71; the sleeve 11 at the bottom of the sleeve 1 is inserted into the bolt hole of the cylinder 4 and is ring-welded on the cylinder 4, the gasket 2 is placed in the groove 12 of the sleeve 1, the pressure ring 3 is pressed on the gasket 2, and the bolt 5 passes through the special-shaped stepped hole 71 on the liner 7, the sleeve 11 of the sleeve 1, the gasket 2 and the pressure ring 3 in sequence and are fastened by a nut 6.

[0018] A sealing gasket 8 is provided between the cylinder 4 and the liner 7 to prevent the cylinder of the rod mill from leaking slurry and extend the service life of the cylinder.

[0019] The sleeve 1 is made of Q235A material and is welded on the surface of the cylinder 4; the outer diameter of the top of the sleeve 1 is 94mm, the inner diameter of the groove 12 is 74mm, and the depth of the groove 12 is 15mm; the outer diameter of the bottom sleeve 11 is 57mm, the inner diameter is 48mm, and the inner hole depth is 58mm.

[0020] The gasket 2 is made of acid and alkali resistant rubber material, with a thickness of 25 mm, an inner diameter of 42 mm, and an outer diameter of 74 mm. The gasket 2 is located inside the sleeve 1, and a boss 21 is provided inside the gasket 2. The boss 21 is 3 mm high and 2 mm wide. Sealing grooves 22 are provided on the upper and lower surfaces.

[0021] The pressing ring 3 is made of Q235A material and is located on the upper part of the gasket 2. Its outer diameter is 100 mm, the diameter of the bottom groove 31 is 74 mm, the depth is 5 mm, and the diameter of the top through hole is 46 mm, the depth is 10 mm.

[0022] The upper portion of the special-shaped stepped hole 71 of the lining plate 7 is a curved surface and is in line contact with the head of the bolt 5 .

[0023] The utility model welds the sleeve ring on the cylinder body, which reduces the influence of leakage caused by cylinder body wear and enlarged bolt holes when the equipment is running; an inner convex sealing gasket is placed inside the sleeve and compressed by a pressure ring to effectively prevent leakage of the bolt holes; the liner is connected in a combined manner to make the liner fit more closely, reduce sliding friction and increase the service life of the cylinder body.

[0024] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A water-coal slurry rod mill inlaid cylinder sealing structure, characterized by: The invention comprises a sleeve (1), a gasket (2), a pressure ring (3), a cylinder (4), a bolt (5), a liner (7) and a sealing gasket (8). The sleeve (1) has a sleeve (11) at its lower end and a groove (12) at its upper part. The pressure ring (3) has a groove (31) at its lower part. The groove (12) and the groove (31) are adapted to the gasket (2). The cylinder (4) has a bolt hole. The liner (7) has a special-shaped stepped hole. (71); the bottom sleeve (11) of the sleeve (1) is inserted into the bolt hole of the cylinder (4) and is welded to the cylinder (4); the washer (2) is placed in the groove (12) of the sleeve (1); the pressure ring (3) is pressed on the washer (2); the bolt (5) passes through the special-shaped stepped hole (71) on the liner (7), the sleeve (1) sleeve (1), the washer (2) and the pressure ring (3) in sequence and is fastened by the nut (6).

2. The embedded cylinder sealing structure of the water-coal slurry rod mill according to claim 1 is characterized in that: A sealing gasket (8) is provided between the cylinder (4) and the lining plate (7).

3. The embedded cylinder sealing structure of the water-coal slurry rod mill according to claim 1 is characterized in that: The sleeve (1) is made of Q235A material and is ring-welded on the surface of the cylinder (4).

4. The embedded cylinder sealing structure of the water-coal slurry rod mill according to claim 1 is characterized in that: The gasket (2) is made of acid- and alkali-resistant rubber material. The gasket (2) is located inside the sleeve (1) and is provided with a boss (21) and sealing grooves (22) on the upper and lower surfaces.

5. The embedded cylinder sealing structure of the water-coal slurry rod mill according to claim 1 is characterized in that: The pressing ring (3) is made of Q235A material and is located on the upper part of the gasket (2).

6. The embedded cylinder sealing structure of the water-coal slurry rod mill according to any one of claims 1 to 5, characterized in that: The upper part of the special-shaped stepped hole (71) of the lining plate (7) is a curved surface and is in line contact with the head of the bolt (5).

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