Sealing structure of fly ash pyrolysis feeding system

Abstract

The utility model discloses a sealing structure of fly ash pyrolysis feeding system, relates to sealing structure technical field, including first connecting pipe and second connecting pipe, first connecting pipe internal left side is equipped with first mounting groove, first mounting groove internal fixed connection is equipped with first expansion washer, second connecting pipe internal fixed connection is equipped with second expansion washer, second connecting pipe internal fixed connection is equipped with second mounting groove. A second mounting groove is formed in the right side of the interior of the second connecting pipe, a second expansion gasket is fixedly connected to the interior of the second mounting groove, a sealing ring is arranged at the inner connecting position of the first connecting pipe and the second connecting pipe, and ejecting blocks are fixedly connected to the middles of the left side and the right side of the sealing ring; and the top block on the left side abuts against the right side face of the first expansion gasket, and the top block on the right side abuts against the left side face of the second expansion gasket, so that flying ash can be effectively prevented from leaking in the feeding pipeline, diffusion of dust and particulate matter is reduced, the risks of air pollution and environment pollution are reduced, the risks of dust explosion and fire disasters are reduced, and the safety of a working place is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a sealing structure of a fly ash pyrolysis feeding system. Background Art

[0002] Fly ash pyrolysis feeding system refers to a kind of equipment for processing fly ash, which is mainly used in pyrolysis, desulfurization and denitrification processes. Fly ash is a solid particle produced during the combustion process, usually composed of carbon, ash, dust and unburned materials. The fly ash pyrolysis feeding system can convert harmful substances into harmless substances by pyrolyzing the fly ash, and can also recycle the resources in it. The fly ash pyrolysis feeding system is widely used in power stations, steel mills, cement plants, chemical plants and other industries, with good environmental and economic benefits.

[0003] In order to prevent fly ash from overflowing everywhere during the feeding process, a pipeline feeding method is usually adopted. The common pipeline sealing connection generally adds one or more layers of sealing gaskets at the connection point of two pipes. The sealing effect of this structure is not ideal, which may cause fly ash dust to leak from the connection position, thereby polluting the surrounding environment and air. Since fly ash has the characteristics of flammability and explosiveness, if the sealing effect of the pipeline is not good, safety accidents such as fire or dust explosion may occur. In view of the above problems, a sealing structure of a fly ash pyrolysis feeding system is proposed to solve them. Utility Model Content

[0004] In order to solve the above technical problems, a sealing structure of a fly ash pyrolysis feeding system is provided, which solves the above-mentioned current method of feeding through pipelines to prevent fly ash from overflowing everywhere during the feeding process. Common pipeline sealing connections generally add one or more layers of sealing gaskets at the connection point of two pipelines. The sealing effect of this structure is not ideal, which may cause fly ash dust to leak from the connection position, thereby polluting the surrounding environment and air. Since fly ash has flammable and explosive properties, if the sealing effect of the pipeline is not good, safety accidents such as fire or dust explosion may occur.

[0005] To achieve the above objectives, the technical solution adopted by the utility model is: a sealing structure of a fly ash pyrolysis feeding system, comprising a first connecting pipe and a second connecting pipe, a first installation groove is opened on the left side inside the first connecting pipe, a first expansion gasket is fixedly connected inside the first installation groove, a second installation groove is opened on the right side inside the second connecting pipe, a second expansion gasket is fixedly connected inside the second installation groove, a sealing ring is arranged at the connecting position of the first connecting pipe and the second connecting pipe, a top block is fixedly connected to the middle part of the left and right sides of the sealing ring, the top block on the left side abuts against the right side surface of the first expansion gasket, and the top block on the right side abuts against the left side surface of the second expansion gasket.

[0006] Preferably, sealing grooves are provided on the right side surface of the first connecting tube and the left side surface of the second connecting tube, a cylindrical sealing strip is provided between the two groups of the sealing grooves, and sealing sheets are fixedly connected to both the inner and outer sides of the cylindrical sealing strip.

[0007] Preferably, a compression strip is provided on the outer side of the connection position between the first connecting tube and the second connecting tube, and the compression strip is fixedly connected to the outer sealing sheet.

[0008] Preferably, a first clamp and a second clamp are provided on the outer side of the connection position between the first connecting pipe and the second connecting pipe.

[0009] Preferably, the first clamp is fixedly connected to a first fixing seat on both upper and lower sides, and the second clamp is fixedly connected to a second fixing seat on both upper and lower sides, and the first fixing seat and the second fixing seat are fixedly connected by bolts and nuts.

[0010] Preferably, the first expansion gasket and the second expansion gasket are made of expanded polytetrafluoroethylene, and the cylindrical sealing strip and the sealing sheet are made of polyetheretherketone or fluorosilicone rubber or silicone.

[0011] Preferably, the thickness of the sealing ring is equal to the thickness of the first mounting groove and the second mounting groove, and the inner diameter of the sealing ring is the same as the inner diameter of the first connecting pipe and the second connecting pipe.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model provides a first expansion gasket and a second expansion gasket, which expand when heated to increase their volume, and the expanded first expansion gasket and the second expansion gasket tightly wrap the top blocks at both ends of the sealing ring, thereby achieving a primary seal to prevent fly ash from escaping, and the sealing ring performs internal sealing on the connection position of the first connecting pipe and the second connecting pipe, thereby isolating the possibility of fly ash escaping from the connection position, and the cylindrical sealing strip and the sealing sheet are provided at the connection position of the first connecting pipe and the second connecting pipe, and the first clamp and the second clamp are used for compression, which can not only prevent external impurities or moisture from entering the interior of the pipe body, but also further increase the sealing effect. The above scheme adopts a three-level sealing structure, which can effectively prevent fly ash from leaking in the feeding pipe, reduce the diffusion of dust and particulate matter, reduce the risk of air pollution and environmental pollution, reduce the risk of dust explosion and fire, and improve the safety of the workplace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0017] The numbers in the figure are:

[0018] 1. First connecting pipe; 2. Second connecting pipe; 3. First mounting groove; 4. First expansion gasket; 5. Second mounting groove; 6. Second expansion gasket; 7. Sealing ring; 8. Top block; 9. First clamp; 10. Second clamp; 11. First fixing seat; 12. Second fixing seat; 13. Sealing groove; 14. Cylindrical sealing strip; 15. Sealing sheet; 16. Compression strip. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] Reference Figure 1-4 As shown, a sealing structure of a fly ash pyrolysis feeding system includes a first connecting pipe 1 and a second connecting pipe 2, a first installation groove 3 is opened on the left side inside the first connecting pipe 1, a first expansion gasket 4 is fixedly connected inside the first installation groove 3, a second installation groove 5 is opened on the right side inside the second connecting pipe 2, a second expansion gasket 6 is fixedly connected inside the second installation groove 5, a sealing ring 7 is arranged at the connecting position inside the first connecting pipe 1 and the second connecting pipe 2, a top block 8 is fixedly connected to the middle of the left and right sides of the sealing ring 7, the left top block 8 abuts against the right side surface of the first expansion gasket 4, and the right top block 8 abuts against the left side surface of the second expansion gasket 6.

[0021] Specifically, sealing grooves 13 are provided on the right side of the first connecting tube 1 and the left side of the second connecting tube 2 , a cylindrical sealing strip 14 is provided between the two sets of sealing grooves 13 , and sealing sheets 15 are fixedly connected to both the inner and outer sides of the cylindrical sealing strip 14 .

[0022] Specifically, a compression strip 16 is provided outside the connection position between the first connecting tube 1 and the second connecting tube 2. The compression strip 16 is fixedly connected to the outer sealing sheet 15. The compression strip 16 and the sealing sheet 15 are connected perpendicularly to each other, so that the sealing area is larger.

[0023] Specifically, a first clamp 9 and a second clamp 10 are provided on the outside of the connection position of the first connecting pipe 1 and the second connecting pipe 2, and the inner sides of the first clamp 9 and the second clamp 10 are notched, which are adapted to the shape of the first connecting pipe 1 and the second connecting pipe 2 after connection.

[0024] Specifically, the first clamp 9 is fixedly connected to the first fixing seat 11 on both the upper and lower sides, and the second clamp 10 is fixedly connected to the second fixing seat 12 on both the upper and lower sides. The first fixing seat 11 and the second fixing seat 12 are fixedly connected by bolts and nuts.

[0025] Optionally, the first expansion gasket 4 and the second expansion gasket 6 are made of expanded polytetrafluoroethylene, which will expand when exposed to high temperature and can easily wrap the top block 8. The cylindrical sealing strip 14 and the sealing sheet 15 are made of polyetheretherketone or fluorosilicone rubber or silicone. Polyetheretherketone, fluorosilicone rubber and silicone all have good high temperature resistance and can adapt to the high temperature of the pyrolysis system.

[0026] Furthermore, the thickness of the sealing ring 7 is equal to the thickness of the first mounting groove 3 and the second mounting groove 5, and the inner diameter of the sealing ring 7 is the same as the inner diameter of the first connecting pipe 1 and the second connecting pipe 2. The sealing ring 7 having the same inner diameter as the inner diameter of the pipeline will not affect the conveying flow of the pipeline, thereby ensuring the pyrolysis efficiency of the fly ash.

[0027] Working principle: the first expansion gasket 4 and the second expansion gasket 6 expand when heated, increasing their volume. After expansion, the first expansion gasket 4 and the second expansion gasket 6 will tightly wrap the top blocks 8 at both ends of the sealing ring 7, thereby achieving a primary seal to prevent fly ash from escaping, and the sealing ring 7 will perform internal sealing on the connection position of the first connecting pipe 1 and the second connecting pipe 2, thereby isolating the possibility of fly ash escaping from the connection position. The cylindrical sealing strip 14 and the sealing sheet 15 are arranged at the connection position of the first connecting pipe 1 and the second connecting pipe 2, and the first clamp 9 and the second clamp 10 are used for compression, which can not only prevent external impurities or moisture from entering the interior of the pipe body, but also further enhance the sealing effect.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing structure of a fly ash pyrolysis feeding system, comprising a first connecting pipe (1) and a second connecting pipe (2), characterized in that: A first mounting groove (3) is provided on the left side inside the first connecting tube (1), and a first expansion gasket (4) is fixedly connected inside the first mounting groove (3). A second mounting groove (5) is provided on the right side inside the second connecting tube (2), and a second expansion gasket (6) is fixedly connected inside the second mounting groove (5). A sealing ring (7) is provided at the connecting position inside the first connecting tube (1) and the second connecting tube (2), and a top block (8) is fixedly connected to the middle of the left and right sides of the sealing ring (7). The top block (8) on the left side abuts against the right side surface of the first expansion gasket (4), and the top block (8) on the right side abuts against the left side surface of the second expansion gasket (6).

2. The sealing structure of a fly ash pyrolysis feeding system according to claim 1, characterized in that: The right side surface of the first connecting tube (1) and the left side surface of the second connecting tube (2) are both provided with sealing grooves (13), a cylindrical sealing strip (14) is provided between the two groups of the sealing grooves (13), and sealing sheets (15) are fixedly connected to both the inner and outer sides of the cylindrical sealing strip (14).

3. The sealing structure of a fly ash pyrolysis feeding system according to claim 2, characterized in that: A compression strip (16) is provided on the outside of the connection position between the first connecting tube (1) and the second connecting tube (2), and the compression strip (16) is fixedly connected to the outer sealing sheet (15).

4. The sealing structure of a fly ash pyrolysis feeding system according to claim 1, characterized in that: A first clamp (9) and a second clamp (10) are provided on the outside of the connection position between the first connecting pipe (1) and the second connecting pipe (2).

5. The sealing structure of the fly ash pyrolysis feeding system according to claim 4, characterized in that: The first clamp (9) is fixedly connected to a first fixing seat (11) on both upper and lower sides, and the second clamp (10) is fixedly connected to a second fixing seat (12) on both upper and lower sides. The first fixing seat (11) and the second fixing seat (12) are fixedly connected via bolts and nuts.

6. The sealing structure of a fly ash pyrolysis feeding system according to claim 2, characterized in that: The material of the first expansion gasket (4) and the second expansion gasket (6) is expanded polytetrafluoroethylene, and the material of the cylindrical sealing strip (14) and the sealing sheet (15) is polyetheretherketone or fluorosilicone rubber or silicone.

7. The sealing structure of a fly ash pyrolysis feeding system according to claim 1, characterized in that: The thickness of the sealing ring (7) is equal to the thickness of the first installation groove (3) and the second installation groove (5), and the inner diameter of the sealing ring (7) is the same as the inner diameter of the first connecting pipe (1) and the second connecting pipe (2).

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