Pipeline scale inhibiting and removing device

Abstract

The utility model relates to the technical field of pipeline descaling equipment, in particular to a pipeline scale inhibiting and descaling device. Comprising a circulating pipe, a first air inlet pipe is arranged on the outer side of the circulating pipe, a second air inlet pipe is communicated with the first air inlet pipe, one end of the second air inlet pipe extends into the circulating pipe, a spray head is arranged at the end of the second air inlet pipe, and a third air inlet pipe is communicated with the first air inlet pipe. The end of a second gas inlet pipe arranged on a first gas inlet pipe surrounding the outer side of the circulating pipe extends into the circulating pipe, a spray head is arranged at the end of the second gas inlet pipe, inert high-pressure gas is sprayed into the circulating pipe through the spray head to be mixed with stable fluid in the circulating pipe to form turbulent flow, and scales on the spray head and the side wall of the pipeline are stripped. The fluid in a turbulent flow form is more beneficial to driving the fluid to move, equipment scaling is avoided, meanwhile, pipeline scaling and blockage are avoided, and the purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline descaling equipment, in particular to a pipeline scale prevention and descaling device. Background Art

[0002] In the lead smelting industry, the flue gas produced during the smelting process requires a large amount of circulating dilute acid to wash and cool it down during cooling. The impurities and solid content in the dilute acid are relatively large, which will lead to a large amount of sewage discharge in the acid purification process, and easily cause scaling and clogging of the dynamic wave nozzle, greatly reducing the purification efficiency. At the same time, in order to ensure normal process indicators and prevent equipment burning, the equipment needs to increase the supply of production water for cooling after scaling, increase sewage discharge, lead to an increase in wastewater volume and higher treatment costs.

[0003] At present, the sulfuric acid purification process in the lead smelting industry is prone to scaling and clogging of pipelines. The treatment method is to shut down the machine for disassembly and cleaning or shut down and enter the tower tank for cleaning. The shutdown, disassembly and cleaning workload is large and time-consuming, and the system needs to be shut down for processing, which reduces production efficiency. Summary of the invention

[0004] In order to solve the problem that the existing pipelines need to be shut down for disassembly and cleaning or shut down to enter the tower tank for cleaning when they are blocked by scale, the workload of shutdown, disassembly and cleaning is large, the time is long and the system needs to be shut down for processing, which reduces production efficiency, the utility model proposes a pipeline scale prevention and descaling device, the end of the second air inlet pipe arranged on the first air inlet pipe surrounding the outer side of the circulation pipe extends into the circulation pipe, and a nozzle is provided at the end thereof, the nozzle sprays inert high-pressure gas into the circulation pipe to mix with the stable fluid in the circulation pipe to form turbulence, so that the scale at the dynamic wave nozzle and the side wall of the pipeline is peeled off, and the fluid in the turbulent form is more conducive to driving the fluid movement, avoiding scaling of the equipment and preventing scaling and clogging of the pipeline, thereby improving the purification efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a pipeline scale prevention and descaling device, including a circulation pipe, the outer side of the circulation pipe is surrounded by a first air inlet pipe, the first air inlet pipe is connected to a second air inlet pipe, one end of the second air inlet pipe extends into the interior of the circulation pipe and a nozzle is provided at the end thereof, and the first air inlet pipe is connected to a third air inlet pipe. The fluid circulating in the circulation pipe is dilute acid. In order to prevent acid mud and impurities therein from scaling on the nozzle and the pipe wall, a second air inlet pipe is provided on the first air inlet pipe arranged on the outer side of the circulation pipe, the end of the second air inlet pipe extends into the circulation pipe and a nozzle is provided at the end thereof, and high-pressure inert gas is transported to the first air inlet pipe through the third air inlet pipe. The high-pressure gas sprayed from the nozzle combines with the stable fluid in the circulation pipe to form turbulence, which can peel off the scale from the pipeline nozzle, and the high-pressure environment and turbulence can reduce the probability of scaling of the circulating dilute acid in the circulation pipe during operation.

[0006] Furthermore, the first air intake pipe is annular, and a plurality of second air intake pipes are arranged along the inner circumference thereof, the second air intake pipe includes a first air intake branch pipe arranged on the first air intake pipe and a second air intake branch pipe arranged on the circulation pipe opposite to the first air intake branch pipe, and a first valve is arranged on the second air intake pipe. The plurality of second air intake pipes are evenly arranged on the inner side of the first air intake pipe. The center of the annular first air intake pipe coincides with that of the circulation pipe and a gap is arranged between the annular first air intake pipe and the circulation pipe, and a plurality of second air intake pipes connecting the first air intake pipe and the circulation pipe are evenly arranged between the first air intake pipe and the circulation pipe, so as to increase the rate of turbulent flow treatment scaling in the circulation pipe.

[0007] Furthermore, the first air intake branch pipe and the second air intake branch pipe are connected to the first valve via flanges.

[0008] Furthermore, the first air inlet pipe is connected to a pressure relief pipe, and a pressure relief valve is provided on the pressure relief pipe. External high-pressure air is connected to the circulation pipe to form a high-pressure environment in the circulation pipe. The pressure relief pipe can adjust the pressure in the circulation pipe to avoid safety accidents.

[0009] Furthermore, the third air intake pipe comprises a third air intake branch pipe arranged on the first air intake pipe and a fourth air intake branch pipe connected to external high-pressure air, and the third air intake pipe is provided with a second valve to control the input of inert high-pressure air from the third air intake pipe to the first air intake pipe.

[0010] Furthermore, the third air intake branch pipe and the fourth air intake branch pipe are connected to the second valve via flanges.

[0011] Through the above technical scheme, the beneficial effects of the utility model are as follows: the end of the second air intake pipe arranged on the first air intake pipe surrounding the outer side of the circulation pipe of the utility model extends into the circulation pipe, and a nozzle is provided at its end. The inert high-pressure gas is sprayed into the circulation pipe through the nozzle to mix with the stable fluid in the circulation pipe to form turbulence, and the scale on the power wave nozzle and the pipeline is peeled off. The fluid in the form of turbulent flow is more conducive to driving the fluid movement, reducing the probability of equipment scaling, and can effectively deal with equipment scaling, avoid shutdown processing, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a pipeline scale prevention and descaling device of the utility model;

[0013] Figure 2 It is a side view of a pipeline scale prevention and descaling device of the utility model.

[0014] The numbers in the attached drawings are: 1 is a circulation pipe, 2 is a first air intake pipe, 3 is a nozzle, 5 is a first air intake branch pipe, 6 is a second air intake branch pipe, 7 is a first valve, 8 is a pressure relief pipe, 9 is a pressure relief valve, 10 is a second valve, 11 is a third air intake branch pipe, and 12 is a fourth air intake branch pipe. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0016] like Figure 1-2 As shown, this embodiment provides a pipeline scale prevention and descaling device, including a circulation pipe 1, a first air inlet pipe 2 is surrounded on the outer side of the circulation pipe 1, a second air inlet pipe is connected to the first air inlet pipe 2, one end of the second air inlet pipe extends into the circulation pipe 1 and a nozzle 3 is provided at the end thereof, and a third air inlet pipe is connected to the first air inlet pipe 2.

[0017] Specifically, the first air intake pipe 2 is annular, and a plurality of second air intake pipes are arranged along the inner circumference thereof. The first air intake pipe 2 is arranged on the side of the circulation pipe 1 close to the power wave nozzle. In this embodiment, the annular first air intake pipe 2 coincides with the center of the circulation pipe 1 and is spaced apart from the circulation pipe 1. Three second air intake pipes are evenly arranged between the first air intake pipe 2 and the circulation pipe 1 to connect the two.

[0018] The second air intake pipe includes a first air intake branch pipe 5 arranged on the first air intake pipe 2 and a second air intake branch pipe 6 arranged on the circulation pipe 1 and opposite to the first air intake branch pipe 5. The second air intake pipe is also provided with a first valve 7. In the present embodiment, the first air intake branch pipe 5 and the second air intake branch pipe 6 are both connected to the first valve 7 via flanges.

[0019] The third air intake pipe includes a third air intake branch pipe 11 arranged on the first air intake pipe 2 and a fourth air intake branch pipe 12 connected to the external high-pressure air. The third air intake pipe is also provided with a second valve 10. In this embodiment, the third air intake branch pipe 11 and the fourth air intake branch pipe 12 are connected to the second valve 10 through flanges.

[0020] Connecting external inert high-pressure air to the circulation pipe 1 will form a high-pressure environment in the circulation pipe 1. In order to avoid excessive pressure in the circulation pipe 1 and cause safety accidents, a pressure relief pipe 8 is connected to the first air inlet pipe 2. The pressure relief pipe 8 is provided with a pressure relief valve 9 to control the pressure in the circulation pipe 1.

[0021] In this embodiment, the external high-pressure gas transported to the circulation pipe 1 is an inert gas (such as nitrogen) to avoid reaction with the circulating dilute acid in the circulation pipe 1.

[0022] When in use, open the second valve 10 on the third air inlet pipe and the first valve 7 on the second air inlet pipe, and the external inert high-pressure gas enters the annular first air inlet pipe 2 through the third air inlet pipe, and then enters the circulation pipe 1 through the three second air inlet pipes on the first air inlet pipe 2. The inert high-pressure gas is sprayed out by the nozzle 3 at the end of the second air inlet pipe and combines with the fluid of the circulating dilute acid in the circulation pipe 1 to form turbulence, which can peel off the scale from the pipeline and the power wave nozzle, and the high-pressure environment and turbulence reduce the probability of scaling of the circulating dilute acid in the circulation pipe 1 during operation.

[0023] In addition to coping with the scenario of circulating dilute acid into the pipeline mentioned in the background technology of the utility model, it should also be noted that the utility model can also be applied to the situation where ordinary tap water is passed into the pipeline and other alkaline solutions flow into the pipeline and cause the pipeline to be blocked.

[0024] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A pipeline scale prevention and descaling device, comprising a circulation pipe (1), characterized in that: The outer side of the circulation pipe (1) is surrounded by a first air intake pipe (2), the first air intake pipe (2) is connected to a second air intake pipe, one end of the second air intake pipe extends into the circulation pipe (1) and a nozzle (3) is provided at the end thereof, and the first air intake pipe (2) is connected to a third air intake pipe.

2. A pipeline scale prevention and descaling device according to claim 1, characterized in that: The first air intake pipe (2) is annular and has a plurality of second air intake pipes arranged along its inner circumference. The second air intake pipes include a first air intake branch pipe (5) arranged on the first air intake pipe (2) and a second air intake branch pipe (6) arranged on the circulation pipe (1) and opposite to the first air intake branch pipe (5). The second air intake pipe is provided with a first valve (7).

3. A pipeline scale prevention and descaling device according to claim 2, characterized in that: The first air intake branch pipe (5) and the second air intake branch pipe (6) are both connected to the first valve (7) via flanges.

4. A pipeline scale prevention and descaling device according to claim 1, characterized in that: The first air inlet pipe (2) is connected to a pressure relief pipe (8), and a pressure relief valve (9) is provided on the pressure relief pipe (8).

5. A pipeline scale prevention and descaling device according to claim 1, characterized in that: The third air intake pipe comprises a third air intake branch pipe (11) arranged on the first air intake pipe (2) and a fourth air intake branch pipe (12) connected to external high-pressure air, and the third air intake pipe is provided with a second valve (10).

6. A pipeline scale prevention and descaling device according to claim 5, characterized in that: The third air intake branch pipe (11) and the fourth air intake branch pipe (12) are both connected to the second valve (10) via flanges.

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