Kiln head coal injection duct sealing device

Abstract

The utility model discloses a kiln head coal injection duct sealing device which comprises a high-temperature-resistant expansion joint, a high-temperature-resistant cloth layer and clamps, the high-temperature-resistant cloth layer is fixedly connected to the interior of the high-temperature-resistant expansion joint, a conical cover is fixedly connected to the bottom end of the high-temperature-resistant cloth layer, the clamps are arranged outside the conical cover and the high-temperature-resistant cloth layer in a sleeved mode, and the high-temperature-resistant cloth layer is fixedly connected with the high-temperature-resistant cloth layer. A plurality of limiting pieces are fixedly connected to the outer side of the high-temperature-resistant telescopic joint, limiting rings are fixedly connected to the outer sides of the limiting pieces, a steel wire rope penetrates through the interiors of the limiting rings, and fixing frames are connected to the two ends of the steel wire rope in a hung mode. By arranging the high-temperature-resistant telescopic joint, the limiting ring, the fixing frame and the hoop, stretching according to the needed length is facilitated through stretching and retracting of the high-temperature-resistant telescopic joint, meanwhile, in the stretching process, the limiting ring and the steel wire rope are in sliding fit, horizontal movement on the fixing frame can be kept, and then the high-temperature-resistant cloth layer is sleeved with the hoop; the high-temperature-resistant cloth layer is bent through the clamping grooves in the inner sides of the hoops.

Description

Technical Field

[0001] The utility model relates to the technical field of coal injection pipe sealing, in particular to a kiln head coal injection pipe sealing device. Background Art

[0002] The kiln head coal injection pipe needs to be constantly moved forward and backward as the firing conditions change within the kiln. Under normal firing conditions, the pipe typically moves about 600 to 800 mm, creating a leak point between the pipe and the kiln door nozzle. Because rotary kilns typically operate under negative pressure, this allows cold air to enter through this location, causing unnecessary heat loss. Furthermore, the poor sealing performance of the kiln head coal injection pipe results in severe air leakage and ash emission, wasting energy and increasing labor. Utility Model Content

[0003] The purpose of the utility model is to provide a kiln head coal injection pipe sealing device, which is convenient for stretching according to the required length through the expansion and contraction of the high-temperature resistant expansion joint. At the same time, the limit ring and the wire rope slide and cooperate during the stretching process to maintain the horizontal movement of the fixed frame. Subsequently, a clamp is sleeved on the outside of the high-temperature resistant cloth layer, and the high-temperature resistant cloth layer is bent by the clamping groove on the inside of the clamp, and the sealing and firmness are increased by strengthening the firm contact of the clamping rib.

[0004] To achieve the above-mentioned purpose, a kiln head coal injection pipe sealing device is provided, comprising: a high-temperature resistant expansion joint, a high-temperature resistant cloth layer and a clamp, the interior of the high-temperature resistant expansion joint is fixedly connected to the high-temperature resistant cloth layer, the bottom end of the high-temperature resistant cloth layer is fixedly connected to a conical cover, the outside of the conical cover and the high-temperature resistant cloth layer are both provided with clamps, the outside of the high-temperature resistant expansion joint is fixedly connected to a plurality of limit plates, the outside of the limit plates is fixedly connected to a limit ring, a steel wire rope passes through the interior of the limit ring, and both ends of the steel wire rope are hung with fixed frames.

[0005] According to the kiln head coal injection pipe sealing device, a clamping groove is opened in the middle of the clamp, and reinforcing ribs are fixedly connected to both sides of the clamp to increase firm resistance and improve sealing.

[0006] According to the kiln head coal injection pipe sealing device, the clamps are combined into two semicircles, and the clamps are rotatably matched with each other. One end of the clamps is fixedly connected with a lug, which facilitates the fastening of the clamps.

[0007] According to the kiln head coal injection pipe sealing device, threaded holes are provided on both sides of the inner part of the lug, the inner threads of the threaded holes are connected to bolt rods, and the inner part of the bolt rods is provided with a plurality of through holes, through which the pin rods can be inserted and fixed into the corresponding through holes.

[0008] According to the kiln head coal injection pipe sealing device, a latch rod is passed through the inside of the through hole, and a rubber pad is fixedly connected to the middle of the latch rod. The rubber pad increases the rubber flexibility and resistance, making it less likely to slip, and serves as a limit to facilitate installation and disassembly.

[0009] According to the kiln head coal injection pipe sealing device, a fish scale lining is fixedly connected between the high temperature resistant expansion joint and the conical cover, and the fish scale lining solves the problems of air leakage and dust emission at the kiln door coal injection pipe.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model provides a kiln head coal injection pipe sealing device which is provided with: a high-temperature resistant expansion joint, a limiting ring, a fixing frame and a clamp. The expansion and contraction of the high-temperature resistant expansion joint facilitates stretching according to the required length. At the same time, the limiting ring and the steel wire rope slide and cooperate during the stretching process to maintain the horizontal movement of the fixing frame. Subsequently, a clamp is sleeved on the outside of the high-temperature resistant fabric layer, and the clamping groove on the inside of the clamp is used to bend the high-temperature resistant fabric layer. The sealing and firmness are increased by strengthening the firm contact of the clamping rib. This structure can increase the firmness of the existing strip clamp and enhance the sealing effect.

[0012] 2. The utility model provides a kiln head coal injection pipe sealing device which comprises: a bolt rod, a lug and a latch rod. The lug is threaded through the bolt rod to be tightened. After tightening, the bolt rod extending out is then passed through the latch rod to be clamped and fixed to prevent falling off, and is convenient for quick disassembly and installation operations.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a three-dimensional structural diagram of a kiln head coal injection pipe sealing device of the utility model;

[0016] Figure 2 This is an enlarged view of the conical cover of a kiln head coal injection pipe sealing device of the utility model;

[0017] Figure 3 This is an enlarged view of the clamp structure of a kiln head coal injection pipe sealing device of the utility model;

[0018] Figure 4 This is a disassembled diagram of the bolt rod and latch rod of a kiln head coal injection pipe sealing device of the utility model.

[0019] In the figure: 1. High-temperature resistant expansion joint; 2. Limiting plate; 3. High-temperature resistant fabric layer; 4. Clamp; 5. Limiting ring; 6. Fixing frame; 7. Steel wire rope; 8. Conical cover; 9. Fish scale lining; 10. Slot; 11. Reinforcement rib; 12. Lug; 13. Through hole; 14. Bolt rod; 15. Latch rod; 16. Rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a kiln head coal injection pipe sealing device, comprising: a high temperature resistant expansion joint 1, a high temperature resistant cloth layer 3 and a clamp 4, the high temperature resistant expansion joint 1 is fixedly connected to the high temperature resistant cloth layer 3, the high temperature resistant cloth layers 3 at both ends of the high temperature resistant expansion joint 1 and the conical cover 8 are sleeved on the coal injection pipe position, the bottom end of the high temperature resistant cloth layer 3 is fixedly connected with the conical cover 8, the conical sleeve is completed by the conical cover 8, the gas circulation is more sufficient, the outside of the conical cover 8 and the high temperature resistant cloth layer 3 are sleeved with a clamp 4, the outside of the high temperature resistant cloth layer 3 is sleeved with the clamp 4, and it is aligned with the high temperature resistant cloth layer through the clamping groove 10 on the inner side of the clamp 4. 3 plays a bending role, and by strengthening the firm resistance of the clamping rib 11, the sealing and firmness are increased. The outside of the high-temperature resistant expansion joint 1 is fixedly connected with a number of limit plates 2, which can be recycled, superimposed and stretched through the limit plates 2. The outside of the limit plate 2 is fixedly connected with a limit ring 5, and a steel wire rope 7 is passed through the inside of the limit ring 5. Both ends of the steel wire rope 7 are hung with a fixed frame 6. Through the expansion and contraction of the high-temperature resistant expansion joint 1, it is convenient to stretch according to the required length. At the same time, during the stretching process, the limit ring 5 and the steel wire rope 7 slide together to keep the fixed frame 6 in horizontal movement. A fish scale lining 9 is fixedly connected internally between the high-temperature resistant expansion joint 1 and the conical cover 8.

[0022] A clamping groove 10 is provided in the middle of the interior of the clamp 4, and reinforcing ribs 11 are fixedly connected on both sides of the interior of the clamp 4. The clamp 4 is a combination of two semicircles, and the clamps 4 are rotatably matched. One end of the clamp 4 is fixedly connected with a lug 12, and threaded holes are provided on both sides of the interior of the lug 12. The internal threads of the threaded holes are connected with a bolt rod 14, and the lug 12 is threadedly penetrated by the bolt rod 14 to be threadedly tightened. After tightening, the bolt rod 14 extending out is then penetrated by the bolt rod 15 to be clamped and fixed to prevent falling off, which facilitates quick disassembly and installation operations. A number of through holes 13 are provided inside the bolt rod 14, and a latch rod 15 is penetrated inside the through hole 13. A rubber pad 16 is fixedly connected to the middle part of the latch rod 15, and the friction force is increased by the rubber pad 16 structure. Compared with the traditional nut structure, disassembly is simple, efficiency is high, and use is convenient.

[0023] Working principle: When in use, the high-temperature resistant fabric layers 3 and the conical cover 8 at both ends of the high-temperature resistant expansion joint 1 are sleeved on the coal injection pipe position, and then the high-temperature resistant expansion joint 1 is stretched and contracted to facilitate stretching according to the required length. At the same time, during the stretching process, the limit ring 5 and the wire rope 7 slide and cooperate to keep the fixed frame 6 in horizontal movement. Then, the clamp 4 is sleeved on the outside of the high-temperature resistant fabric layer 3, and the clamping groove 10 on the inside of the clamp 4 is used to bend the high-temperature resistant fabric layer 3, and the firm contact of the strengthening clamp 11 is increased to increase the sealing and firmness. Then, the bolt rod 14 is threaded through the lug 12 to tighten it. After tightening, the bolt rod 14 extended through the bolt rod 14 through the pin rod 15 to clamp and fix it to prevent it from falling off, which is convenient for quick disassembly and installation operations.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A kiln head coal injection pipe sealing device, comprising: A high-temperature resistant expansion joint (1), a high-temperature resistant fabric layer (3) and a clamp (4), characterized in that the interior of the high-temperature resistant expansion joint (1) is fixedly connected to the high-temperature resistant fabric layer (3), the bottom end of the high-temperature resistant fabric layer (3) is fixedly connected to a conical cover (8), the outside of the conical cover (8) and the high-temperature resistant fabric layer (3) are both sleeved with a clamp (4), the outside of the high-temperature resistant expansion joint (1) is fixedly connected to a plurality of limit plates (2), the outside of the limit plates (2) is fixedly connected to a limit ring (5), a steel wire rope (7) passes through the interior of the limit ring (5), and both ends of the steel wire rope (7) are hung with a fixing frame (6).

2. A kiln head coal injection pipe sealing device according to claim 1, characterized in that: A clamping groove (10) is provided in the center of the clamp (4), and reinforcing clamping ribs (11) are fixedly connected to both sides of the inside of the clamp (4).

3. A kiln head coal injection pipe sealing device according to claim 1, characterized in that: The clamps (4) are combined into two semicircles, and the clamps (4) are rotatably matched with each other. One end of each clamp (4) is fixedly connected with a lug (12).

4. A kiln head coal injection pipe sealing device as claimed in claim 3, characterized in that: Threaded holes are provided on both sides of the inner portion of the lug (12), the inner portion of the threaded hole is threadedly connected to a bolt rod (14), and the inner portion of the bolt rod (14) is provided with a plurality of through holes (13).

5. A kiln head coal injection pipe sealing device as claimed in claim 4, characterized in that: A latch rod (15) passes through the interior of the through hole (13), and a rubber pad (16) is fixedly connected to the middle of the latch rod (15).

6. A kiln head coal injection pipe sealing device according to claim 1, characterized in that: A fish scale lining (9) is fixedly connected internally between the high temperature resistant expansion joint (1) and the conical cover (8).

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