Round ammonia spraying grid structure

Abstract

The utility model relates to the technical field of ammonia spraying grids, and discloses a circular ammonia spraying grid structure which comprises a smoke pipe and a circular grid, a fixing ring is arranged above the circular grid, a fixing seat is mounted on the bottom side of the fixing ring, and a threaded hole, a through hole and a placement groove are sequentially formed in the fixing seat from one side close to the inner wall of the smoke pipe to the inside. Through the design, when the motor drives the screw rod to rotate, the circular grid can be driven by the screw rod to ascend and descend, so that the circular grid downwards moves out of the smoke pipe, the circular grid is conveniently maintained and overhauled, a sealing block is installed on the bottom side of the air inlet pipe at one end of the circular grid, and after the circular grid upwards moves, the sealing block is fixed to the bottom side of the air inlet pipe. The end, provided with the sealing block, of the air inlet pipe is meshed with the containing groove in the fixing base, at the moment, the conveying pipe and the air inlet pipe form a complete channel, air inlet is facilitated, the connected conveying pipe does not need to be disassembled and assembled when the circular grating is lifted, the installation difficulty is lowered, and the convenience of equipment overhaul is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia spraying grids, in particular to a circular ammonia spraying grid structure. Background Art

[0002] In the current flue gas treatment system, the most commonly used flue gas denitrification technology is the selective catalytic reduction technology (SCR). The injection and mixing of ammonia is one of the most core process technologies, and the most core device in this flue gas treatment technology is the ammonia injection grid, which is a device that fully mixes the ammonia / air mixed gas with the high-temperature flue gas. The ammonia injection grid is installed at the inlet flue of the reactor to evenly spray ammonia or ammonia-containing air into the flue gas.

[0003] The traditional ammonia injection grid is installed inside the flue, which is difficult to install and requires maintenance and repair by staff for long-term use. However, since the ammonia injection grid is inside the flue, it is difficult to maintain and repair. Therefore, those skilled in the art provide a circular ammonia injection grid structure to solve the problems raised in the above background technology. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a circular ammonia spray grid structure to solve the problem that the ammonia spray grid is installed inside the flue, which is difficult to install and requires maintenance and overhaul by staff after long-term use. However, since the ammonia spray grid is inside the flue, maintenance and overhaul are difficult.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circular ammonia injection grid structure, comprising a smoke pipe and a circular grid, a fixing ring is arranged above the circular grid, a fixing seat is installed on the bottom side of the fixing ring, the fixing seat is provided with threaded holes, through holes and mounting grooves in sequence from the side adjacent to the inner wall of the smoke pipe to the inside, a delivery pipe is connected to the threaded hole, an air intake pipe is installed at one end of the circular grid, a sealing block is installed on the bottom side of the air intake pipe, a first bracket is horizontally installed on the fixing ring, a motor is installed on the first bracket, a screw is connected to the bottom output end of the motor, a second bracket is installed in the middle of the circular grid, and a limiting rod is vertically installed on the upper side of the second bracket.

[0008] Preferably, the screw rod passes through the first bracket and is threadedly connected to the second bracket, and the limiting rod is slidably plugged into the first bracket.

[0009] Preferably, the fixing ring is fixedly connected to the inner wall of the smoke pipe by bolts, a pipe entry hole is opened on one side of the smoke pipe corresponding to the fixing seat, the delivery pipe passes through the pipe entry hole and is threadedly connected to the threaded hole in the fixing seat, and when the motor drives the screw to rotate, the circular grille can be raised and lowered under the drive of the screw, so that the circular grille is moved downward out of the smoke pipe, thereby facilitating maintenance and repair of the circular grille.

[0010] Preferably, the circular grille has one end of the air inlet pipe that is plugged into the accommodation groove from bottom to top, and the sealing block is squeezed and engaged with the accommodation groove. When the circular grille moves upward, the end of the air inlet pipe with the sealing block is engaged and plugged into the accommodation groove in the fixed seat. At this time, the delivery pipe and the air inlet pipe form a complete passage to facilitate air intake. This structure does not require disassembly of the connected delivery pipe when the circular grille is raised or lowered, thereby improving convenience.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the utility model provides a circular ammonia spraying grid structure with the following features:

[0013] Beneficial effects:

[0014] Through the design, when the motor drives the screw to rotate, the circular grille can be raised and lowered under the drive of the screw, so that the circular grille is moved downward out of the smoke pipe, so as to facilitate the maintenance and repair of the circular grille, and a sealing block is installed on the bottom side of the air inlet pipe at one end of the circular grille. When the circular grille moves up, the end of the air inlet pipe with the sealing block engages with the mounting groove in the fixed seat. At this time, the delivery pipe and the air inlet pipe form a complete passage, which is convenient for air intake. This structure does not need to disassemble the connected delivery pipe when the circular grille is raised and lowered, thereby reducing the difficulty of installation and improving the convenience of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a circular ammonia injection grid structure provided in an embodiment of the present application.

[0016] Figure 2 It is a structural schematic diagram of a smoke pipe in a circular ammonia injection grid structure provided in an embodiment of the present application.

[0017] Figure 3 It is a partial cross-sectional view of a fixing seat in a circular ammonia injection grid structure provided in an embodiment of the present application.

[0018] In the figure: 1. smoke pipe; 2. fixing ring; 3. circular grille; 4. fixing seat; 5. threaded hole; 6. delivery pipe; 7. through hole; 8. placement groove; 9. air inlet pipe; 10. sealing block; 11. first bracket; 12. motor; 13. screw; 14. second bracket; 15. limit rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides a technical solution, a circular ammonia spraying grid structure, please refer to Figure 1 , Figure 2 , including a smoke pipe 1 and a circular grille 3, a fixing ring 2 is arranged above the circular grille 3, and a fixing seat 4 is installed on the bottom side of the fixing ring 2, see Figure 2 , Figure 3 The fixing seat 4 is provided with a threaded hole 5, a through hole 7 and a placement groove 8 in sequence from the side adjacent to the inner wall of the smoke pipe 1 to the inside, and a delivery pipe 6 is connected to the threaded hole 5. An air intake pipe 9 is installed at one end of the circular grille 3, and a sealing block 10 is installed on the bottom side of the air intake pipe 9. A first bracket 11 is installed horizontally on the fixing ring 2, and a motor 12 is installed on the first bracket 11. The bottom output end of the motor 12 is driven and connected with a screw rod 13. A second bracket 14 is installed in the middle of the circular grille 3, and a limit rod 15 is vertically installed on the upper side of the second bracket 14.

[0021] See also Figure 2 , Figure 3 The screw rod 13 passes through the first bracket 11 and is threadedly connected to the second bracket 14. The limit rod 15 is slidably plugged with the first bracket 11. The fixing ring 2 is fixedly connected to the inner wall of the smoke pipe 1 by bolts. A pipe entry hole is opened on one side of the smoke pipe 1 corresponding to the fixing seat 4. The delivery pipe 6 passes through the pipe entry hole and is threadedly connected to the threaded hole 5 in the fixing seat 4. When the motor 12 drives the screw rod 13 to rotate, the circular grille 3 can be lifted and lowered under the drive of the screw rod 13, so that the circular grille 3 moves downward out of the smoke pipe. Tube 1, so as to facilitate the maintenance and repair of the circular grille 3. The end of the circular grille 3 with the air inlet pipe 9 is plugged into the mounting groove 8 from bottom to top, and the sealing block 10 is squeezed and engaged with the mounting groove 8. When the circular grille 3 moves up, the end of the air inlet pipe 9 with the sealing block 10 is engaged and plugged with the mounting groove 8 in the fixing seat 4. At this time, the delivery pipe 6 and the air inlet pipe 9 form a complete passage for convenient air intake. This structure does not need to disassemble and assemble the connected delivery pipe 6 when the circular grille 3 is raised or lowered, thereby improving convenience.

[0022] In the utility model, a fixing ring 2 and a circular grille 3 are arranged in the smoke pipe 1, and the fixing ring 2 is arranged above the circular grille 3. After the fixing ring 2 is fixed to the smoke pipe 1 by bolts, a fixing seat 4 is installed on the lower side of the fixing ring 2, and a pipe inlet channel is opened at the smoke pipe 1 corresponding to the fixing seat 4, and a threaded hole 5, a through hole 7 and a placement groove 8 are opened in the fixing seat 4 in sequence from the side adjacent to the smoke pipe 1, and the delivery pipe 6 can pass through the side wall of the smoke pipe 1 and be threadedly connected with the threaded hole 5;

[0023] A first bracket 11 is transversely mounted on the fixing ring 2, a motor 12 is fixedly mounted in the middle of the first bracket 11, and a screw 13 is driven and connected to the output end of the lower end of the motor 12. The screw 13 penetrates the first bracket 11 and is threadedly connected to a second bracket 14 mounted in the middle of the circular grille 3, and a limiting rod 15 is mounted on the second bracket 14. The limiting rod 15 can be limitedly plugged with the first bracket 11. Therefore, when the motor 12 drives the screw 13 to rotate, the circular grille 3 can be driven by the screw 13. The circular grille 3 is lifted and lowered, so that the circular grille 3 is moved downward out of the smoke pipe 1, so as to facilitate the maintenance and repair of the circular grille 3, and a sealing block 10 is installed on the bottom side of the air inlet pipe 9 at one end of the circular grille 3. When the circular grille 3 is moved up, the end of the air inlet pipe 9 with the sealing block 10 is engaged and plugged with the mounting groove 8 in the fixing seat 4. At this time, the delivery pipe 6 and the air inlet pipe 9 form a complete passage, which is convenient for air intake. This structure does not need to disassemble and assemble the connected delivery pipe 6 when the circular grille 3 is lifted and lowered, thereby improving convenience.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] In this document, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular ammonia injection grid structure, comprising a smoke pipe (1) and a circular grid (3), characterized in that: A fixing ring (2) is arranged above the circular grille (3), a fixing seat (4) is installed on the bottom side of the fixing ring (2), the fixing seat (4) is provided with a threaded hole (5), a through hole (7) and a placement groove (8) in sequence from the side adjacent to the inner wall of the smoke pipe (1) to the inside, a delivery pipe (6) is connected to the threaded hole (5), an air intake pipe (9) is installed at one end of the circular grille (3), and a sealing block (10) is installed on the bottom side of the air intake pipe (9); A first bracket (11) is horizontally mounted on the fixing ring (2), a motor (12) is mounted on the first bracket (11), a screw rod (13) is drivingly connected to the bottom output end of the motor (12), a second bracket (14) is mounted in the middle of the circular grille (3), and a limit rod (15) is vertically mounted on the upper side of the second bracket (14).

2. A circular ammonia injection grid structure according to claim 1, characterized in that: The fixing ring (2) is fixedly connected to the inner wall of the smoke pipe (1) via bolts.

3. The circular ammonia injection grid structure according to claim 1, characterized in that: A pipe entry hole is provided on one side of the smoke pipe (1) corresponding to the fixing seat (4), and the delivery pipe (6) passes through the pipe entry hole and is threadedly connected to a threaded hole (5) in the fixing seat (4).

4. The circular ammonia injection grid structure according to claim 1, characterized in that: One end of the circular grille (3) with the air inlet pipe (9) is plugged into the placement groove (8) from bottom to top, and the sealing block (10) is squeezed and engaged with the placement groove (8).

5. The circular ammonia injection grid structure according to claim 1, characterized in that: The screw rod (13) passes through the first bracket (11) and is threadedly connected to the second bracket (14).

6. The circular ammonia injection grid structure according to claim 1, characterized in that: The limiting rod (15) is slidably plugged into the first bracket (11).

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