Crystallization dredging drill bit for ammonia pipeline of denitration system

Abstract

The utility model discloses a kind of ammonia pipeline crystallization dredging drill bits of denitration system, including transmission shaft, transmission shaft input end connection driving equipment, transmission shaft output end is provided with drill bit, the outside of transmission shaft near output end part is equipped with two mounting rings, mounting ring is connected with fixed bolt along radial thread, to fixed mounting ring position, fixedly connected with chain between two mounting rings, chain circumferential array is provided with multiple. The utility model is through the setting drill bit to the crystallization of ammonia pipeline is efficiently broken, and further broken is set to chain, chain is flexible material, and the maximum diameter when chain rotates is adjusted by fixed bolt, reduce the damage to pipeline wall.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline dredging and relates to a drill bit for dredging ammonia pipeline crystallization in a denitrification system. Background Technology

[0002] During the operation of a power plant's denitrification system, ammonia pipelines are prone to crystal formation. As these crystals accumulate, they can cause blockages, affecting denitrification efficiency and potentially even leading to system shutdown. Traditional methods for unblocking these pipelines primarily involve manual tapping and high-pressure water flushing. However, because ammonia crystals are quite hard, these methods can deform the pipelines and are also inefficient. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a drill bit for clearing crystallization in ammonia pipelines of a denitrification system, which effectively solves the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A drill bit for clearing crystallization in ammonia pipelines of a denitrification system, comprising:

[0006] A drive shaft, the input end of which is connected to a drive device;

[0007] A drill bit, which is fixedly connected to the output end of the drive shaft;

[0008] Mounting rings, two of which are provided, are sleeved on the outer side of the drive shaft near the output end;

[0009] A fixing bolt is radially threaded onto the mounting ring to fix the position of the mounting ring;

[0010] A chain, with both ends of which are fixedly connected to the mounting ring, and multiple chains arranged in a circumferential array.

[0011] Optionally, a positioning groove is provided on the side of the drive shaft, and the fixing bolt is a set screw.

[0012] Optionally, the positioning groove is engraved with the pipe diameter value.

[0013] Optionally, the mounting ring includes a fixing ring, and a connecting earring is fixedly mounted on the side of the fixing ring.

[0014] Optionally, the connecting earring is provided with an installation opening, both ends of the installation opening are provided with threads, and a locking screw is threadedly connected to the end of the installation opening.

[0015] Optionally, the locking screw is tightened in the opposite direction to the feed rotation direction of the drive shaft.

[0016] Optionally, wear-resistant protrusions are fixedly provided on the side of the chain.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A drill bit is used to efficiently break up the crystals in the ammonia pipeline, and a chain is used for further breaking up. The chain is made of flexible material, and the maximum diameter of the chain during rotation is adjusted by fixing bolts to reduce damage to the pipeline wall.

[0019] 2. The chain is connected by a connecting earring, which makes it easy to replace different chains according to different tube diameters. The locking screw tube part facilitates the connection between the chain and the connecting earring.

[0020] 3. By setting wear-resistant protrusions, the wear resistance of the chain is increased on the one hand, and the impact of the wear-resistant protrusions on the crystals is improved, thereby enhancing the crushing ability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the mounting ring portion according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the wear-resistant protrusion in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of another embodiment of the wear-resistant protrusion of this utility model.

[0025] Reference numerals: 1. Drive shaft; 2. Drill bit; 3. Mounting ring; 301. Fixing ring; 302. Connecting lug; 303. Mounting opening; 304. Locking screw; 31. Fixing bolt; 32. Chain; 33. Positioning groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1This utility model discloses a crystallization unblocking drill bit for an ammonia pipeline in a denitrification system. It includes a drive shaft 1, with a drive device connected to the input end of the drive shaft 1 and a drill bit 2 at the output end of the drive shaft 1. Two mounting rings 3 are sleeved on the outer side of the part of the drive shaft 1 near the output end. Fixing bolts 31 are connected to the mounting rings 3 radially to fix the position of the mounting rings 3. A chain 32 is fixedly connected between the two mounting rings 3, and multiple chains 32 are arranged in a circumferential array.

[0028] Specifically, a drive shaft 1 is installed using a drive device such as an electric drill, which drives the drive device to rotate the drive shaft 1. A drill bit 2 is installed at the output end of the drive shaft 1 to break up the crystals in the ammonia pipeline. An installation ring 3 is installed behind the drill bit 2, and a chain 32 is set between the two installation rings 3. When the drive shaft 1 rotates, the chain 32 moves centrifugally and feeds along the channel drilled by the drill bit 2, breaking up the crystals on the outside of the channel. The installation rings 3 are fixed in position by fixing bolts 31. Changing the distance between the two installation rings 3 can change the maximum diameter of the outer side of the chain 32 when it rotates.

[0029] In this way, the crystals in the ammonia pipeline are efficiently broken by setting the drill bit 2, and further broken by setting the chain 32. The chain 32 is made of flexible material, and the maximum diameter of the chain 32 when rotating is adjusted by fixing bolt 31 to reduce damage to the pipeline wall.

[0030] In some feasible embodiments, the drive shaft 1 can be configured as a flexible shaft. The drive shaft 1 can be a flexible shaft as used in existing technologies, or it can be made of a material with a certain degree of flexibility, such as steel cable, to accommodate bends or deformations in parts of the pipeline. The drill bit 2 should be made of a wear-resistant alloy material to improve its service life. Different helix angles and pitches of the drill bit 2 can be selected or manufactured according to different pipe diameters. In this embodiment, for pipes with diameters of DN32-DN150, the helix angle can be designed to be 30°-60°, and the pitch can be designed to be 10-30mm. To facilitate drill bit 2 replacement, the drill bit 2 is provided with mounting holes. The drive shaft 1 is inserted into the mounting holes, and threaded holes are provided radially in the drill bit 2 for locking with set screws.

[0031] The mounting ring 3 is circular, and the fixing bolt 31 can be set to different forms such as bolts and set screws. The chain 32 is composed of multiple chain links, which are arranged in a crisscross pattern when connected to impact the crystals from multiple angles. Compared with steel wire ropes, the crushing efficiency is higher.

[0032] As a specific embodiment of a crystallization dredging drill bit for an ammonia pipeline in a denitrification system provided in the application, the drive shaft 1 has a positioning groove 33 on its side and the fixing bolt 31 is a set screw.

[0033] Overall, by setting the positioning groove 33 and cooperating with the fixing bolt 31, the possibility of axial slippage of the mounting ring 3 during use is reduced.

[0034] In some feasible methods, the positioning groove 33 is engraved with the pipe diameter value so that the position of the mounting ring 3 can be adjusted according to different pipe diameters.

[0035] As another specific embodiment of the ammonia pipeline crystallization unblocking drill bit for a denitrification system provided in the application, the mounting ring 3 includes a fixing ring 301, and a connecting lug 302 is fixedly installed on the side of the fixing ring 301.

[0036] It should be understood that by setting the connecting earring 302 to connect the chain 32, it is convenient to replace different chains 32 according to different tube diameters.

[0037] Furthermore, the connecting earring 302 is provided with an installation opening 303, both ends of the installation opening 303 are provided with threads, and the end of the installation opening 303 is threadedly connected to a locking screw tube 304.

[0038] It should be understood that by providing the locking screw section 304, the connection between the chain 32 and the connecting earring 302 is further facilitated.

[0039] In some feasible methods, the connecting earring 302 is U-shaped and is fixed to the side of the mounting ring 3 by welding or other means. A mounting opening 303 is formed by cutting one side of the connecting earring 302. The connecting earring 302 at both ends of the mounting opening 303 is provided with threads. After the locking screw tube 304 is rotated, its two ends are respectively threaded to the two ends of the mounting opening 303.

[0040] Furthermore, the tightening direction of the locking screw 304 is opposite to the feed rotation direction of the drive shaft 1.

[0041] It should be understood that during the process of the connecting earring 302 rotating with the drive shaft 1, the locking screw 304 may rotate due to friction with the crystal. The locking screw 304 is set to be tightened in the opposite direction to the feed rotation direction of the drive shaft 1, so that during the feed rotation of the drive shaft 1, the locking screw 304 rotates in the tightening direction under the action of friction, reducing the possibility of disengagement.

[0042] As a specific embodiment of a crystallization dredging drill bit for an ammonia pipeline in a denitrification system provided in the application, wear-resistant protrusions are fixedly provided on the side of the chain 32.

[0043] It should be understood that by setting wear-resistant protrusions, the wear resistance of chain 32 is increased on the one hand, and the impact of the wear-resistant protrusions on the crystals is improved, thereby enhancing the crushing capacity.

[0044] In some feasible methods, the wear-resistant protrusions are conical protrusions welded or bonded to the chain links 32. To reduce damage to the pipe, the wear-resistant protrusions are not provided at the outermost position of the middle chain links when they rotate.

[0045] In some feasible ways, the wear-resistant protrusions can also be set as raised ridges.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drill bit for clearing crystallization in ammonia pipelines of a denitrification system, characterized in that, include: A drive shaft (1) is provided, the input end of which is connected to a drive device; Drill bit (2), which is fixedly connected to the output end of the drive shaft (1); Mounting ring (3), two mounting rings (3) are provided, and the mounting ring (3) is sleeved on the outer side of the transmission shaft (1) near the output end; A fixing bolt (31) is radially threaded to the mounting ring (3) to fix the position of the mounting ring (3); Chain (32), both ends of which are fixedly connected to the mounting ring (3), and multiple chains (32) are arranged in a circumferential array.

2. The ammonia pipeline crystallization unblocking drill bit for a denitrification system according to claim 1, characterized in that: The drive shaft (1) has a positioning groove (33) on its side, and the fixing bolt (31) is a set screw.

3. The ammonia pipeline crystallization unblocking drill bit for a denitrification system according to claim 2, characterized in that: The positioning groove (33) is engraved with the pipe diameter value.

4. The ammonia pipeline crystallization unblocking drill bit for a denitrification system according to claim 1, characterized in that: The mounting ring (3) includes a fixing ring (301), and a connecting ear (302) is fixedly mounted on the side of the fixing ring (301).

5. A drill bit for clearing crystallization in a denitrification system ammonia pipeline according to claim 4, characterized in that: The connecting earring (302) is provided with an installation opening (303), and the two ends of the installation opening (303) are provided with threads. The end of the installation opening (303) is threadedly connected to a locking screw tube (304).

6. The ammonia pipeline crystallization unblocking drill bit for a denitrification system according to claim 5, characterized in that: The tightening direction of the locking screw (304) is opposite to the feed rotation direction of the drive shaft (1).

7. The ammonia pipeline crystallization unblocking drill bit for a denitrification system according to claim 1, characterized in that: The chain (32) has wear-resistant protrusions fixedly provided on its side.

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