Rotary kiln tail sealing device

Abstract

The utility model discloses a kiln tail sealing device of a rotary kiln, relates to the technical field of rotary kiln sealing, and aims to solve the problem that an existing fish scale adopts a steel rope hanging mode for auxiliary sealing and is easy to slip. Comprising a rotary kiln cylinder, a fish scale sealing ring is arranged between a slag collecting box and the rotary kiln cylinder, a wear-resistant lining plate ring is arranged between the fish scale sealing ring and the rotary kiln cylinder, a stabilizing mechanism is arranged on the wear-resistant lining plate ring, and the stabilizing mechanism is in sliding connection with the fish scale sealing ring; a tensioning mechanism is arranged on the outer wall of the slag collecting box and is connected with the stabilizing mechanism; the pressing plate is mounted on the wear-resistant lining plate ring, the first spring is limited by the limiting pin under the assistance of the first spring on the pre-tightening rod, so that the pressing plate moves towards the fish scale sealing ring, the fish scale sealing ring is pressed through the guide groove, and the fish scale is more tightly attached to the sealing surface of the kiln tail for sealing; the stability and the sealing performance of the fish scale sealing ring are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln sealing, and particularly relates to a sealing device for the tail of a rotary kiln. Background Art

[0002] In order to ensure the stability and effectiveness of the seal of the fish scales, the existing solution usually suspends heavy objects on the fish scales with steel cables, so that the fish scales fit more tightly on the sealing surface of the kiln tail for sealing; however, the steel cable suspension method is prone to the situation of steel cable slippage, which is not conducive to sealing the kiln tail.

[0003] Therefore, this application provides a sealing device for the tail of a rotary kiln to meet the requirements. Summary of the Utility Model

[0004] The purpose of this application is to provide a sealing device for the tail of a rotary kiln, aiming to solve the problem that the existing fish scales are assisted in sealing by the method of steel cable suspension, which is prone to slippage.

[0005] To achieve the above purpose, this application provides the following technical solution: A sealing device for the tail of a rotary kiln includes a rotary kiln cylinder body. One end of the rotary kiln cylinder body penetrates into a slag collection box, and a fish scale sealing ring is arranged between the slag collection box and the rotary kiln cylinder body. A wear-resistant lining ring is arranged between the fish scale sealing ring and the rotary kiln cylinder body. A stabilizing mechanism is detachably connected to the wear-resistant lining ring, and the stabilizing mechanism is slidably connected to the fish scale sealing ring; a tensioning mechanism is arranged on the outer wall of the slag collection box, and the tensioning mechanism is connected to the stabilizing mechanism.

[0006] The stabilizing mechanism further includes a pre-tightening rod, a first spring, a limit pin and a pressing plate. The pre-tightening rod is arranged on the wear-resistant lining ring, and the end face of the wear-resistant lining ring is provided with the pre-tightening rod. There are multiple groups of pre-tightening rods, and they are arranged in an annular array. The pressing plate is provided with pre-tightening holes adapted to the pre-tightening rods. The pre-tightening rods pass through the pre-tightening holes, and the end of the pre-tightening rod is provided with a through hole. A limit pin is threadedly connected in the through hole, and a first spring is press-fitted between the limit pin and the pressing plate.

[0007] And multiple groups of pressing plates are arranged in an annular array, and the end face of the pressing plate is provided with a guiding groove for guiding. By installing the pressing plate on the wear-resistant lining ring, with the assistance of the first spring on the pre-tightening rod, the limit pin limits the first spring, so that the pressing plate moves towards the fish scale sealing ring, and the fish scale sealing ring is pressed through the guiding groove, making the fish scales fit more tightly on the sealing surface of the kiln tail for sealing, improving the stability and sealing performance of the fish scale sealing ring.

[0008] Preferably, a positioning hole for positioning is arranged between two groups of pre-tightening holes, and a positioning rod adapted to the positioning hole is arranged on the wear-resistant lining ring.

[0009] Preferably, the inlet part of the guiding groove is inclined.

[0010] Preferably, connection blocks are provided on the outer wall of the pressing plate. Two sets of symmetrical connection holes are provided on the connection blocks. The adjacent connection holes of the two sets of connection blocks are connected by connecting rods on the connecting piece. The free end of the connecting rod is fixed by a bolt, and a sliding groove is provided on the connecting rod. The sliding groove is connected to the slag collection box through a tensioning mechanism.

[0011] Preferably, the tensioning mechanism includes a telescopic member. The fixed end of the telescopic member is installed on the slag collection box, and its telescopic end is slidably connected in the sliding groove, and the section of the sliding groove is T-shaped. Through the tensioning mechanism, with the cooperation of the connecting piece and the connection block, the four pressing plates are connected to each other, and with the cooperation of the sliding groove and the telescopic member, an inward tension is applied to further press and seal the fish scale sealing ring.

[0012] Preferably, the telescopic member includes a telescopic main body, a second spring, and a tensioning rod. The telescopic main body is installed on the slag collection box, and a tensioning rod is slidably connected therein. The outer end of the tensioning rod is adapted to the sliding groove, and the inner end of the tensioning rod is connected to the telescopic main body through a second spring, and the second spring is a tension spring.

[0013] In summary, the technical effects and advantages of the present utility model are as follows:

[0014] In the present utility model, by installing the pressing plate on the wear-resistant lining ring, with the assistance of the first spring on the pre-tightening rod, the limit pin limits the first spring, causing the pressing plate to move towards the fish scale sealing ring, and pressing the fish scale sealing ring through the guiding groove, making the fish scales fit more tightly on the sealing surface of the kiln tail for sealing, improving the stability and sealing performance of the fish scale sealing ring.

[0015] In the present utility model, through the tensioning mechanism, with the cooperation of the connecting piece and the connection block, the four pressing plates are connected to each other, and with the cooperation of the sliding groove and the telescopic member, an inward tension is applied to further press and seal the fish scale sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a partial exploded structural diagram of the present utility model;

[0019] Figure 3Schematic structural diagram of the wear-resistant lining ring of the present utility model;

[0020] Figure 4 Schematic structural diagram of the telescopic member of the present utility model;

[0021] Figure 5 Schematic sectional structural diagram of the pressing plate of the present utility model.

[0022] In the figure: 1, rotary kiln cylinder; 2, slag collection box; 3, wear-resistant lining ring; 31, positioning rod; 32, pre-tightening rod; 4, first spring; 5, limit pin; 6, fish-scale sealing ring; 7, pressing plate; 71, pre-tightening hole; 72, positioning hole; 73, guiding groove; 74, connecting block; 75, connecting hole; 8, connecting member; 81, connecting rod; 82, sliding groove; 9, telescopic member; 91, telescopic main body; 92, second spring; 93, tension rod. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0024] Embodiment: Refer to Figures 1-5 A rotary kiln tail seal device as shown, including a rotary kiln cylinder 1, a slag collection box 2, a wear-resistant lining ring 3, and a fish-scale sealing ring 6. The rotary kiln cylinder 1 is inserted into the interior of the slag collection box 2 and is rotatably connected to the slag collection box 2. A wear-resistant lining ring 3 is sleeved on the outer wall of the rotary kiln cylinder 1. A fish-scale sealing ring 6 is provided on the slag collection box 2, and the free end of the fish-scale sealing ring 6 is slidably connected to the wear-resistant lining ring 3. In order to ensure the stability and sealing performance of the fish-scale sealing ring 6, a stabilizing mechanism for pressing the fish-scale sealing ring 6 is provided on the wear-resistant lining ring 3, and a tensioning mechanism for further assisting the stabilizing mechanism is provided on the slag collection box 2.

[0025] Stabilizing mechanism: A pre-tightening rod 32 is provided on the end face of the wear-resistant lining ring 3. Two pre-tightening rods 32 form a group, and a total of four groups are arranged in a circular array. A positioning rod 31 is provided between the two pre-tightening rods 32. A pre-tightening hole 71 and a positioning hole 72 that are compatible with the pre-tightening rod 32 and the positioning rod 31 are provided on the pressure plate 7. The above-mentioned holes cooperate with the rods to achieve rapid installation of the pressure plate 7. The split design of the pressure plate 7 is convenient for installing it on the wear-resistant lining ring 3. A through hole is provided on the pre-tightening rod 32, and the inner thread of the through hole is connected to the limit pin 5. The No. 1 spring 4 provided between the limit pin 5 and the pressure plate 7 is a compression spring. The limit pin 5 supports the bottom of the pressure plate 7 so that the pressure plate 7 moves toward the direction of the fish scale sealing ring 6, and cooperates with the wedge-shaped guide groove 73 provided on the end face of the pressure plate 7 to achieve the tightening of the fish scale sealing ring 6.

[0026] In order to further enhance the structural strength between the pressure plates 7, a connecting block 74 is provided in the middle of each group of pressure plates 7. Each group of connecting blocks 74 is provided with two groups of symmetrical connecting holes 75. The two groups of connecting blocks 74 are connected by a connecting piece 8. The connecting piece 8 is provided with a connecting rod 81 that is adapted to the connecting hole 75. After the connecting rod 81 is inserted into the connecting hole 75, it is fixed with bolts to complete the structural connection, so that it moves together and presses the fish scale sealing ring 6.

[0027] Tensioning mechanism: The telescopic body 91 of the telescopic member 9 is a cylindrical structure, and an inner cavity connected to the outside is provided therein. The telescopic body 91 is fixed on the slag collecting box 2, and an I-shaped tensioning rod 93 is slidably connected in the inner cavity, and its inner end is connected to the telescopic body 91 through a No. 2 spring 92, and its outer end is adapted to the T-shaped slide groove 82, thereby realizing the connection between the two. With the cooperation of the No. 2 spring 92 (telescopic spring), the pressure plate 7 is pulled in the direction of the fish scale sealing ring 6, so that it presses the fish scale sealing ring 6 to avoid air leakage, etc.

[0028] The practical working principle of the present invention is as follows: after the rotary kiln cylinder 1 is inserted into the slag collecting box 2, the fish scale sealing ring 6 installed on the slag collecting box 2 is pressed against the wear-resistant lining ring 3 on the rotary kiln cylinder 1, and then the pressing plate 7 is aligned with the pre-tightening rod 32 and the positioning rod 31 through the pre-tightening hole 71 and the positioning hole 72 to complete the preliminary assembly, and then the No. 1 spring 4 is sleeved on the pre-tightening rod 32, and the limit pin 5 is screwed into the through hole to complete the limit installation, and under the action of the No. 1 spring 4, the fish scale sealing ring 6 is pressed, and then the end of the tension rod 93 is inserted into the slide groove 82 of the connecting piece 8, and then the connecting rod 81 is aligned with the connecting hole 75 of the connecting block 74, and then the connecting rod 81 is limited by a bolt, and then under the action of the No. 2 spring 92, the connecting piece 8 is tightened by the tension rod 93 to complete the overall installation.

[0029] The electromechanical connection involved in the present utility model is a commonly used means adopted by those skilled in the art and can obtain technical inspiration through a limited number of tests, belonging to common general knowledge.

[0030] The components not described in detail in this article are prior art.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rotary kiln tail sealing device, comprising a rotary kiln cylinder (1), one end of the rotary kiln cylinder (1) penetrates into a slag collecting box (2), a fish scale sealing ring (6) is provided between the slag collecting box (2) and the rotary kiln cylinder (1), and a wear-resistant lining plate ring (3) is provided between the fish scale sealing ring (6) and the rotary kiln cylinder (1), characterized in that: The wear-resistant lining ring (3) is detachably connected to a stabilizing mechanism, and the stabilizing mechanism is slidably connected to the fish scale sealing ring (6); a tensioning mechanism is provided on the outer wall of the slag collecting box (2), and the tensioning mechanism is connected to the stabilizing mechanism; The stabilizing mechanism further comprises a preload rod (32), a No. 1 spring (4), a stop pin (5) and a pressure plate (7); the preload rod (32) is arranged on the wear-resistant lining ring (3), and the end surface of the wear-resistant lining ring (3) is provided with the preload rod (32); a plurality of preload rods (32) are provided and arranged in a ring array; a preload hole (71) matched with the preload rod (32) is provided on the pressure plate (7); the preload rod (32) passes through the preload hole (71), and a through hole is provided at the end of the preload rod (32); the stop pin (5) is connected to the inner thread of the through hole, and the No. 1 spring (4) is press-fitted between the stop pin (5) and the pressure plate (7); Furthermore, a plurality of groups of the pressing plates (7) are provided in an annular array, and the end surfaces of the pressing plates (7) are provided with guiding grooves (73) for guiding.

2. The rotary kiln tail sealing device according to claim 1, characterized in that: A positioning hole (72) used for positioning is provided between the two groups of pre-tightening holes (71), and a positioning rod (31) adapted to the positioning hole (72) is provided on the wear-resistant lining ring (3).

3. The rotary kiln tail sealing device according to claim 1, characterized in that: The inlet portion of the guide groove (73) is arranged inclined.

4. The rotary kiln tail sealing device according to claim 1, characterized in that: A connecting block (74) is provided on the outer wall of the pressure plate (7), and two groups of symmetrical connecting holes (75) are provided on the connecting block (74). The two groups of adjacent connecting holes (75) of the connecting block (74) are connected via a connecting rod (81) on the connecting member (8), and the free end of the connecting rod (81) is fixed by a bolt, and a slide groove (82) is provided on the connecting rod (81), and the slide groove (82) is connected to the slag collecting box (2) via a tensioning mechanism.

5. A rotary kiln tail sealing device according to claim 4, characterized in that: The tensioning mechanism comprises a telescopic member (9), a fixed end of the telescopic member (9) being mounted on the slag collecting box (2), a telescopic end of the telescopic member being slidably connected in the slide groove (82), and a cross section of the slide groove (82) being T-shaped.

6. A rotary kiln tail sealing device according to claim 5, characterized in that: The telescopic member (9) comprises a telescopic body (91), a No. 2 spring (92), and a tension rod (93); the telescopic body (91) is mounted on the slag collecting box (2), and the tension rod (93) is slidably connected therein, and the outward end of the tension rod (93) is adapted to the slide groove (82), and the inner end of the tension rod (93) is connected to the telescopic body (91) via the No. 2 spring (92), and the No. 2 spring (92) is a tension spring.

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