Novel sealing device of external heating type rotary kiln

Abstract

The utility model discloses a novel sealing device for an external heating type rotary kiln, which belongs to the technical field of sealing devices and is applied to a cylinder component, the left side of the cylinder component is connected with a sealing component for sealing the cylinder component, a graphite packing is arranged between the cylinder component and the sealing component, and the cylinder component and the sealing component are fastened through a fastening component. The sealing assembly comprises a kiln head cover and a second flange plate, and the outer side wall of the right end of the kiln head cover is fixedly connected with the inner side wall of the second flange plate. By means of the mode, the packing space is formed, the graphite packing is filled in the packing space to achieve sealing of the external heating type rotary kiln, when the graphite packing is thinned, the graphite packing can be further locked in the mode that the graphite packing is fastened again through the fastening assembly, the sealing effect can be achieved again, and waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing device technical field, concretely relates to new sealing device of external heating type rotary kiln. BACKGROUND

[0002] External heating type rotary kiln is a kind of high-temperature equipment widely used in metallurgy, building materials, chemical industry and other industries. Its main function is to heat the material to high temperature by rotating, mainly used for product drying, granulation, volatile removal, cracking and other functions, in general, to prevent the material in kiln ignition or oxidation, the both ends of kiln need to be sealed as far as possible, reduce oxygen entry.

[0003] For example, the external heating type rotary kiln disclosed by Chinese patent application CN212511169U includes a base and a kiln body connected to the base and inclinedly arranged, a driving mechanism and a supporting mechanism are arranged between the kiln body and the base, a heating jacket side wall is sealingly communicated with a plurality of hot air pipes, a recovery sleeve is arranged between the kiln body and the base, the recovery sleeve is sealingly connected with the kiln body, the recovery sleeve seals the end opening of the kiln body, the recovery sleeve is sealingly communicated with a recovery pipe between the heating jacket and the recovery sleeve, the recovery pipe is inclinedly arranged, and the top end of the recovery pipe is communicated with the bottom end of the recovery sleeve.

[0004] External heating type rotary kiln generally heats the kiln wall, utilizes the heat conduction of metal plate to heat the internal material. According to the different heating temperatures of the kiln body, the metal expansion amount is different, and the kiln head is a rotating device, so that the sealing of the external heating type rotary kiln is very difficult.

[0005] Based on this, the utility model designs new sealing device of external heating type rotary kiln to solve the above problems. UTILITY MODEL CONTENTS

[0006] In view of the above shortcomings existing in the prior art, the utility model provides new sealing device of external heating type rotary kiln.

[0007] To achieve the above purpose, the utility model realizes by the following technical schemes:

[0008] The new sealing device of external heating type rotary kiln is applied to a cylinder assembly, a sealing assembly for sealing the cylinder assembly is connected to the left side of the cylinder assembly, a graphite packing is arranged between the cylinder assembly and the sealing assembly, and the cylinder assembly and the sealing assembly are fastened by a fastening assembly.

[0009] The sealing assembly includes a kiln head cover and a second flange plate, and the right end outer side wall of the kiln head cover is fixedly connected with the inner side wall of the second flange plate.

[0010] Furthermore, the cylinder assembly includes a rotating cylinder and a first flange plate, the left end outer side wall of the rotating cylinder is fixedly connected with the inner side wall of the first flange plate, and the right side of the rotating cylinder is closed.

[0011] Further, the sealing assembly further comprises a limiting baffle, an outer sidewall of the limiting baffle is fixedly connected with the inner sidewall of the kiln head cover, and the limiting baffle is located at the right side of the second flange plate.

[0012] Further, the graphite packing is arranged at the left end of the outer sidewall of the rotating drum, the graphite packing is located at the right side of the limiting baffle, and the right sidewall of the graphite packing exceeds the right sidewall of the second flange plate.

[0013] Further, the graphite packing is in abutting connection with the inner sidewall of the kiln head cover, the outer sidewall of the rotating drum, the left sidewall of the first flange plate and the right sidewall of the second flange plate.

[0014] Further, the fastening assembly comprises bolts and nuts, and the bolts and the nuts are in threaded connection.

[0015] Further, the bolts are inserted into the first flange plate and the second flange plate, and the nuts are in abutting connection with the first flange plate.

[0016] Further, the fastening assembly has four groups of fastening assemblies which are arranged at equal intervals around the first flange plate.

[0017] Compared with the prior art, the utility model has the advantages that: 1. The utility model uses high-temperature graphite packing as a filler, forms a filler space in the kiln head cover, and inserts the graphite packing into the filler space. The graphite packing is compressed by the radial expansion of the kiln body, and the first flange plate and the second flange plate are fastened by the fastening assembly, so that the filler is locked in the filler box, and the axial sealing effect is achieved.

[0018] 2. When the graphite packing is thinned, the graphite packing can be further locked by the fastening assembly in the fastening mode, the sealing effect can be achieved again, and waste is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a perspective view of the novel sealing device of the external heating type rotary kiln. Figure 1

[0021] Figure 2 It is a front view of the novel sealing device of the external heating type rotary kiln.

[0022] ​Figure 3 It is left view of the external heating type rotary kiln novel sealing device of the utility model;

[0023] Figure 4 It is the A-A direction section view of the utility model along Figure 3 .

[0024] The reference signs in the drawing respectively represent:

[0025] 1. cylinder assembly;11. rotary drum;12. first flange plate;2. sealing assembly;21. kiln head cover;22. second flange plate;23. limit stop ring;3. graphite packing;4. fastening assembly;41. bolt;42. nut. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] In the following description, "left", "right", "front", "rear", "upper", "lower" are oriented with the perspective of the front view.

[0028] Embodiment one: in some embodiments, referring to the front view of the accompanying drawings of the specification Figures 1-4 The external heating type rotary kiln novel sealing device is applied to a cylinder assembly 1, the left side of the cylinder assembly 1 is connected with a sealing assembly 2 for sealing the cylinder assembly 1, a graphite packing 3 is arranged between the cylinder assembly 1 and the sealing assembly 2, and the cylinder assembly 1 and the sealing assembly 2 are fastened through a fastening assembly 4.

[0029] The sealing assembly 2 comprises a kiln head cover 21 and a second flange plate 22, and the right end outer side wall of the kiln head cover 21 is fixedly connected with the inner side wall of the second flange plate 22.

[0030] In use, the kiln head cover 21 is sleeved on the cylinder assembly 1, then the graphite packing 3 is wound in the packing space inside the sealing assembly 2, the graphite packing 3 is compressed by radial expansion of the kiln body under heating, then the first flange plate 12 and the second flange plate 22 are fastened through the fastening assembly 4, so that the graphite packing 3 is locked in the packing space, axial sealing effect is achieved, after a period of wear, the graphite packing 3 becomes thin, the graphite packing 3 can be further locked by the re-fastening mode of the fastening assembly 4, so that the sealing effect can be achieved again, and waste is reduced. Meanwhile, the bolt 41 can be loosened to directly replace the graphite packing 3 for sealing.

[0031] The barrel assembly 1 comprises a rotary drum 11 and a first flange plate 12, the left outer wall of the rotary drum 11 is fixedly connected with the inner wall of the first flange plate 12, and the right side of the rotary drum 11 is closed;

[0032] The sealing assembly 2 further comprises a limiting baffle 23, the outer wall of the limiting baffle 23 is fixedly connected with the inner wall of the kiln head cover 21, and the limiting baffle 23 is located at the right side of the second flange plate 22;

[0033] The limiting baffle 23 is a certain distance away from the second flange plate 22, and the right side of the limiting baffle 23 forms a packing space for filling sealing packing.

[0034] The graphite packing 3 is arranged at the left end of the outer wall of the rotary drum 11, the graphite packing 3 is located at the right side of the limiting baffle 23, and the right wall of the graphite packing 3 exceeds the right wall of the second flange plate 22;

[0035] The graphite packing 3 is in abutting connection with the inner wall of the kiln head cover 21, the outer wall of the rotary drum 11, the left wall of the first flange plate 12 and the right wall of the second flange plate 22;

[0036] The fastening assembly 4 comprises bolts 41 and nuts 42, the bolts 41 and the nuts 42 are in threaded connection;

[0037] The bolts 41 are inserted into the first flange plate 12 and the second flange plate 22, and the nuts 42 are in abutting connection with the first flange plate 12;

[0038] The fastening assembly 4 has four groups of bolts 41 and nuts 42 which are arranged at equal intervals on the circumference of the first flange plate 12;

[0039] In use, the kiln head cover 21 is sleeved on the rotary drum 11, the graphite packing 3 is arranged in the packing space at the right side of the limiting baffle 23, the right wall of the graphite packing 3 exceeds the right wall of the second flange plate 22, and then the nuts 42 are screwed on the bolts 41 to fasten the first flange plate 12 and the second flange plate 22, in the fastening process, since the right wall of the graphite packing 3 exceeds the right wall of the second flange plate 22, the first flange plate 12 compresses the graphite packing 3, so that the graphite packing 3 is locked in the packing space and plays an axial sealing role, after a period of wear, the graphite packing 3 is thinned, the graphite packing 3 can be further locked by screwing the nuts 42 on the bolts 41 again, so that the sealing effect can be achieved again, waste is reduced, and the graphite packing 3 can be directly replaced for sealing by loosening the bolts 41.

[0040] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel sealing device for an externally heated rotary kiln, applied to the cylinder assembly (1), characterized in that: A sealing component (2) for sealing the cylinder assembly (1) is connected to the left side of the cylinder assembly (1), and a graphite packing (3) is provided between the cylinder assembly (1) and the sealing component (2). The cylinder assembly (1) and the sealing component (2) are fastened by a fastening component (4). The sealing assembly (2) includes a kiln head cover (21) and a second flange (22), wherein the outer wall of the right end of the kiln head cover (21) is fixedly connected to the inner wall of the second flange (22).

2. The novel sealing device for an externally heated rotary kiln according to claim 1, characterized in that, The cylinder assembly (1) includes a rotating cylinder (11) and a first flange (12). The outer wall of the left end of the rotating cylinder (11) is fixedly connected to the inner wall of the first flange (12), and the right side of the rotating cylinder (11) is closed.

3. The novel sealing device for an externally heated rotary kiln according to claim 2, characterized in that, The sealing assembly (2) also includes a retaining ring (23), the outer side wall of which is fixedly connected to the inner side wall of the kiln head cover (21), and the retaining ring (23) is located on the right side of the second flange (22).

4. The novel sealing device for an externally heated rotary kiln according to claim 3, characterized in that, The graphite packing (3) is wrapped around the left end of the outer wall of the rotating cylinder (11), with the graphite packing (3) located to the right of the limiting ring (23) and the right side wall of the graphite packing (3) extending beyond the right side wall of the second flange (22).

5. The novel sealing device for an externally heated rotary kiln according to claim 4, characterized in that, The graphite packing (3) is in contact with the inner wall of the kiln head cover (21), the outer wall of the rotary drum (11), the left side wall of the first flange (12), and the right side wall of the second flange (22).

6. The novel sealing device for an externally heated rotary kiln according to claim 5, characterized in that, The fastening assembly (4) includes a bolt (41) and a nut (42) which are threaded together.

7. The novel sealing device for an externally heated rotary kiln according to claim 6, characterized in that, Bolts (41) are inserted into the first flange (12) and the second flange (22), and nuts (42) are abutted against the first flange (12).

8. The novel sealing device for an externally heated rotary kiln according to claim 7, characterized in that, The fastening assembly (4) has four sets of equally spaced components arranged around the first flange (12).

Images