Sealing device for feeding end of rotary kiln

Abstract

The utility model relates to a sealing device for a feeding end of a rotary kiln, and belongs to the technical field of sealing devices. Comprising a plurality of packing grooves formed in the outer side of the end portion of the feeding end of an inner kiln cylinder, packing is arranged in the packing grooves, packing glands are arranged on the outer sides of the packing, a spiral feeder is sleeved with a corrugated telescopic pipe, mounting sleeves are fixed to the two ends of the corrugated telescopic pipe, the mounting sleeve at the outer end is fixedly connected with a limiting disc, and the limiting disc is fixed to the outer wall of the spiral feeder. And the mounting sleeve at the inner end is fixedly connected with a packing gland. The sealing between the inner kiln cylinder and the screw feeder is elastic sealing in the axial direction, the sealing effect is better, when the inner kiln cylinder jumps in the axial direction, air leakage is avoided, oil and gas leakage is better prevented, and no sealing ring is arranged, so that the sealing ring is prevented from being squeezed to be broken.

Description

Technical Field

[0001] The utility model relates to a sealing device for a rotary kiln feed end, belonging to the technical field of sealing devices. Background Art

[0002] During the oil sludge treatment, the oil sludge is heated and decomposed by a rotary kiln to separate the oil and gas. At present, the feeding into the inner barrel of the rotary kiln is achieved by a screw feeder. Since the inner barrel rotates during operation, it is necessary to seal between the inner barrel and the screw conveyor. The current sealing device is through the provision of a sealing ring, which has a poor sealing effect and is easily squeezed and damaged when the inner barrel jumps axially. Utility Model Content

[0003] The utility model provides a sealing device for the feeding end of a rotary kiln, which solves the problems that the sealing effect of the sealing ring is poor and the sealing ring is easily squeezed and damaged when the inner kiln cylinder jumps in the axial direction.

[0004] The utility model relates to a sealing device for a rotary kiln feed end, comprising a plurality of packing grooves arranged on the outer side of the end portion of the feed end of an inner kiln cylinder, packings are arranged in the packing grooves, packing glands are arranged on the outer side of the packings, a corrugated telescopic tube is sleeved on the outer side of a screw feeder, mounting sleeves are fixed on both ends of the corrugated telescopic tube, the mounting sleeve at the outer end is fixedly connected to a limiting disk, the limiting disk is fixed on the outer wall of the screw feeder, and the mounting sleeve at the inner end is fixedly connected to the packing gland.

[0005] As a preferred embodiment, a plurality of tie screws are fixed to the outer end of the packing pressure cover, an adjusting nut is provided on the tie screw, a movable spring which is sleeved on the tie screw is provided on the outer side of the adjusting nut, and a plurality of openings for the outer ends of the tie screws to pass through are evenly provided on the outer periphery of the limit plate, so that the packing pressure plate can be better pressed on the packing and the sealing effect is better.

[0006] As a preferred embodiment, a protective gas injection hole is provided on the installation sleeve at the inner end, and protective gas can be introduced into the installation sleeve through the protective gas injection hole before work, so as to achieve a better sealing effect.

[0007] As a preferred embodiment, a fixing flange 1 is fixed on the outer wall of the mounting sleeve at the inner end, the fixing flange 1 is connected to a fixing flange 2, and the fixing flange 2 is fixedly mounted on the packing gland to facilitate installation and connection.

[0008] As a preferred embodiment, a closed flange is fixed on the outer wall of the mounting sleeve at the outer end, and the closed flange is fixed on the mounting limit plate to facilitate installation and connection.

[0009] As a preferred embodiment, a gasket is provided on the outer side of the adjusting nut and is sleeved on the tie rod.

[0010] The utility model has the following beneficial effects:

[0011] The seal between the inner kiln barrel and the screw feeder is an axial elastic seal with better sealing effect. When the inner kiln barrel jumps in the axial direction, there will be no air leakage, which can better prevent oil and gas leakage. In addition, no sealing ring is set to avoid the sealing ring from being squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0014] In the figure: 1. outer shell, 2. inner kiln cylinder, 3. screw feeder, 4. base frame, 5. mounting sleeve, 6. packing, 7. movable spring, 8. limit plate, 9. bellows expansion tube, 10. tie screw, 11. protective gas injection hole, 12. fixing flange 2, 13. packing gland, 14. fixing flange 1, 15. adjusting nut, 16. gasket, 17. closing flange. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with embodiments.

[0016] Embodiment 1, as Figures 1 to 2 As shown, the utility model is a sealing device for the feed end of a rotary kiln, comprising a plurality of packing grooves arranged on the outer side of the feed end of an inner kiln barrel 2, a packing 6 arranged in the packing groove, a packing gland 13 arranged on the outer side of the packing 6, a corrugated telescopic tube 9 sleeved on the outer side of a screw feeder 3, mounting sleeves 5 fixed at both ends of the corrugated telescopic tube 9, the mounting sleeve 5 at the outer end is fixedly connected to a limit plate 8, the limit plate 8 is fixed on the outer wall of the screw feeder 3, and the mounting sleeve 5 at the inner end is fixedly connected to the packing gland 13. An outer shell 1 is arranged on the outer side of the inner kiln barrel 2, and a base frame 4 is fixed at the bottom of the outer shell 1.

[0017] During operation, the screw feeder 3 transports the oil sludge material into the rotating inner kiln cylinder 2. When the inner kiln cylinder 2 jumps along the axial direction, it will squeeze the bellows 9. The bellows 9 is elastic and will give the packing gland 13 an axial force, so that the packing gland 13 is always close to the packing 6, so as to better prevent oil and gas leakage.

[0018] Embodiment 2, on the basis of embodiment 1, a plurality of tie screws 10 are fixed to the outer end of the packing gland 13, and an adjusting nut 15 is provided on the tie screw 10. The outer side of the adjusting nut 15 is provided with a movable spring 7 sleeved on the tie screw 10, and a plurality of openings for the outer ends of the tie screws 10 to pass through are evenly provided on the outer periphery of the limit plate 8. During operation, when the inner kiln tube 2 jumps along the axial direction, the tie screw 10 will move along the axial direction and squeeze the movable spring 7, so that the packing gland 13 is always close to the packing 6, which better prevents oil and gas leakage.

[0019] The mounting sleeve 5 at the inner end is provided with a protective gas injection hole 11. Before work, protective gas can be introduced into the mounting sleeve 5 through the protective gas injection hole 11 to better prevent gas leakage.

[0020] A fixing flange 14 is fixed on the outer wall of the inner end mounting sleeve 5 , the fixing flange 14 is connected to a fixing flange 2 12 , and the fixing flange 2 12 is fixedly mounted on the packing gland 13 .

[0021] A closed flange 17 is fixed on the outer wall of the mounting sleeve 5 at the outer end, and the closed flange 17 is fixedly mounted on the limiting plate 8 .

[0022] A gasket 16 which is sleeved on the tie screw rod 10 is provided on the outer side of the adjusting nut 15 .

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0024] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A rotary kiln feed end sealing device, characterized in that: The invention comprises a plurality of packing grooves arranged on the outer side of the feeding end of the inner kiln tube (2), packing (6) being arranged in the packing grooves, a packing gland (13) being arranged on the outer side of the packing (6), a corrugated telescopic tube (9) being sleeved on the outer side of the screw feeder (3), mounting sleeves (5) being fixed on both ends of the corrugated telescopic tube (9), the mounting sleeve (5) at the outer end being fixedly connected to a limit plate (8), the limit plate (8) being fixed on the outer wall of the screw feeder (3), and the mounting sleeve (5) at the inner end being fixedly connected to the packing gland (13).

2. The rotary kiln feed end sealing device according to claim 1, characterized in that: A plurality of tie rods (10) are fixed to the outer end of the packing gland (13), an adjusting nut (15) is provided on the tie rod (10), a movable spring (7) sleeved on the tie rod (10) is provided on the outer side of the adjusting nut (15), and a plurality of openings for the outer ends of the tie rods (10) to pass through are evenly provided on the outer periphery of the limit plate (8).

3. The rotary kiln feed end sealing device according to claim 1, characterized in that: A protective gas injection hole (11) is provided on the mounting sleeve (5) at the inner end.

4. The rotary kiln feed end sealing device according to claim 3, characterized in that: A fixing flange 1 (14) is fixed on the outer wall of the inner end mounting sleeve (5), the fixing flange 1 (14) is connected to a fixing flange 2 (12), and the fixing flange 2 (12) is fixedly mounted on the packing gland (13).

5. The rotary kiln feed end sealing device according to claim 1, characterized in that: A closed flange (17) is fixed on the outer wall of the mounting sleeve (5) at the outer end, and the closed flange (17) is fixedly mounted on the limiting plate (8).

6. The rotary kiln feed end sealing device according to claim 2, characterized in that: The outer side of the adjusting nut (15) is provided with a gasket (16) sleeved on the tie rod (10).

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