A compressed air pipeline rust removal drainage device

Abstract

The utility model provides a kind of compressed air pipeline rust removal drainage device, it includes rust removal drainage component, installs rust removal drainage component on compressed air pipeline, rust removal drainage component includes short circuit pipe, the short circuit pipe is communicated with compressed air pipeline, and it is equipped with vortex fan inside short circuit pipe, short circuit pipe is communicated with reducing pipe, and a circle electromagnet is arranged on the outer periphery of reducing pipe upper end, valve is arranged in the middle and end, the electromagnet is connected with power supply.The utility model installs rust removal drainage component in compressed air pipeline, rust in compressed air pipeline is absorbed by electromagnet energization and cooperates with compressed air power to suck or push into reducing pipe with rust and condensate, rust and condensate are discharged through reducing pipe, so that rust can be removed while condensate is discharged, realize efficient cleaning rust and condensate.

Description

Technical Field

[0001] This utility model relates to the field of pipeline rust removal technology, specifically to a compressed air pipeline rust removal and drainage device. Background Technology

[0002] As a core component of the mine's "lifeline," underground compressed air pipelines are subjected to multiple factors over long periods, including high temperatures (30℃-40℃), high humidity (relative humidity ≥90%), corrosive gases (SO2 concentration can reach 50ppm), and mechanical vibration. The layered rust (mainly Fe2O3·nH2O) that forms on the inner wall of these iron pipelines can cause the following prominent problems:

[0003] Ventilation efficiency reduction: When rust reaches a certain thickness, the air resistance coefficient along the pipeline increases accordingly, leading to a decrease in the air supply pressure at the end. Equipment safety hazards: Fallen rust particles (0.1-3mm in diameter) can easily cause blockage of the nozzles of pneumatic rock drills (increasing the failure rate by 60%) and blockage of air pumps and fans (increasing maintenance costs by 10,000 yuan per instance).

[0004] Chinese patent document CN210278601U discloses a rust removal device for underground ventilation ducts in coal mines, comprising: a device body, a filter element, and an adsorption element. The filter element is installed at the air outlet inside the device body, and an adsorption element is installed on the side of the filter element near the air inlet of the device body. The adsorption element adsorbs rust, and the rust is filtered by the filter element. By removing rust and other impurities from the air through the filter element and adsorption element, the device effectively reduces the probability of equipment damage and ensures safe production. However, this device cannot completely remove rust from the ventilation duct. During long-term operation, rust will accumulate in the filter element and adsorption element, eventually still posing a risk of equipment damage. Furthermore, condensation will occur in the compressed air pipeline due to cooling. This condensation often accumulates in low-lying areas of the pipeline, forming water accumulation, increasing the resistance of compressed air delivery, and affecting the efficiency of compressed air use. Utility Model Content

[0005] The technical problem to be solved by this invention is how to remove condensate while removing rust.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] This utility model provides a rust removal and drainage device for compressed air pipelines, which includes a rust removal and drainage component. The rust removal and drainage component is installed on the compressed air pipeline. The rust removal and drainage component includes a short connecting pipe, which is connected to the compressed air pipeline. A turbo fan is provided inside the short connecting pipe. The short connecting pipe is connected to a reducing pipe. An electromagnet is provided around the outer periphery of the upper end of the reducing pipe. Valves are provided in the middle and at the end of the reducing pipe. The electromagnet is connected to a power source.

[0008] Beneficial effects: This utility model installs a rust removal and drainage component in the compressed air pipeline. The rust in the compressed air pipeline is attracted by the electromagnet and the compressed air power works together to draw the rust in and push the condensate into the reducer. The rust and condensate are then discharged through the reducer, thus removing the rust while simultaneously draining the condensate, achieving efficient cleaning of rust and condensate.

[0009] Preferably, it further includes a rust-removing ball assembly, which is disposed at the front end of the compressed air pipeline, and the rust-removing drainage assembly is disposed in front of a branch of the compressed air pipeline.

[0010] Beneficial effects: By placing the rust-removing ball assembly at the front end of the compressed air duct, the rust-removing ball assembly can remove rust and some condensate between the front end of the compressed air duct and the branch line, thereby maximizing the removal of rust and condensate; after the compressed air duct is installed at the branch line, the rust and condensate are removed in advance by the rust-removing drainage assembly and the rust-removing ball assembly, preventing them from entering the air-using equipment and damaging it.

[0011] Preferably, the rust removal ball assembly includes rust removal balls, which are one or more of polyurethane abrasive balls, wire brush balls, magnetic rust removal balls, or nylon brush balls.

[0012] Preferably, a filter screen is provided below the reducing pipe.

[0013] Beneficial effects: This utility model obtains rust-removing balls through filter screen filtration, and the rust-removing balls can be recycled and reused, reducing costs.

[0014] Preferably, the rust-removing ball assembly includes a short pipe and a second valve. The short pipe is connected to a compressed air pipeline and to a ball inlet pipe. The ball inlet pipe is equipped with two second valves, and the rust-removing ball is placed between the two second valves.

[0015] Beneficial effects: By setting up a rust-removing ball assembly, the rust-removing ball can move in the compressed air pipeline, removing rust and some condensate from the compressed air pipeline, thus further improving the efficiency of rust removal and drainage.

[0016] Preferably, the diameter of the rust-removing ball is slightly smaller than the minimum inner diameter of the reducer.

[0017] Preferably, the valves include an electric ball valve and an electric butterfly valve, with the electric ball valve located in the middle of the reducing pipe (22) and the electric butterfly valve located at the end of the reducing pipe.

[0018] Beneficial effects: By using two different electric valves to control the flow rate of rust, condensate and rust-removing balls, this invention can prevent rust or rust-removing balls from clogging the reducer pipe.

[0019] Preferably, the angle between the short connecting pipe and the reducing pipe is 40-50°.

[0020] More preferably, the angle between the short connecting pipe and the reducing pipe is 45°.

[0021] Preferably, the inner diameter of the variable diameter tube gradually decreases from top to bottom, and the reduction angle is 8-10°.

[0022] Beneficial effects: This utility model uses a variable diameter pipe with an inner diameter that gradually decreases from top to bottom. The purpose of this is to increase the wind speed and further improve the removal of rust, condensate, and rust-removing balls. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the rust removal and drainage system of the compressed air pipeline in the embodiment;

[0024] Figure 2 This is a schematic diagram of the rust-removing ball device in the embodiment. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] according to Figure 1-2As shown, this embodiment provides a rust removal and drainage device for compressed air pipelines. The compressed air pipeline 10 is a compressed air pipeline 10 in a coal mine. Figure 1 The medium-pressure air flows from left to right, with the leftmost end of the compressed air duct 10 serving as the front end. The compressed air duct 10 is made of 159mm thick iron pipe and serves as the main compressed air duct, with an air pressure of 0.3-0.7 MPa. A rust removal and drainage assembly 20 is installed on the 159mm thick iron pipe during installation, positioned before the branch 11 of the compressed air duct 10. The rust removal and drainage assembly 20 is controlled manually or by a control unit (not shown) to start and stop its rust removal and drainage operation. The control unit uses existing technology, such as PLC or DSP control.

[0028] The rust removal and drainage assembly 20 includes a short connecting pipe 21, which is connected to the compressed air pipeline 10 and fixed by flanges and bolts. Gaskets are provided at the bolts and connection surfaces to enhance sealing and reduce loosening. A turbine fan 211 is installed inside the short connecting pipe 21. Its function is to guide the airflow spirally forward along the pipe wall, forming a stable laminar flow state, reducing wind resistance, and improving compressed air delivery efficiency. The side of the short connecting pipe 21 is connected to a reducing pipe 22. The centrifugal force of the turbine fan 211 throws rust and condensate towards the reducing pipe 22, and then the rust and condensate are discharged through the reducing pipe 22.

[0029] The angle between the short pipe 21 and the reducing pipe 22 is 45°. The reducing pipe 22 is a tapered pipe, with its inner diameter gradually decreasing from top to bottom, and the narrowing angle is 9°. The purpose of this design is to increase the wind speed by reducing the inner diameter, thereby increasing the speed at which rust and condensate are discharged from the reducing pipe 22, and also to avoid rust deposition or condensate retention caused by low-speed airflow.

[0030] An electromagnet 221 is provided around the outer periphery of the upper end of the variable diameter tube 22. In this embodiment, 3 or 4 electromagnets can be set according to the size of the outer diameter of the upper end of the variable diameter tube 22, and they are arranged around the upper end of the variable diameter tube 22. The electromagnet 221 is connected to the power supply through a circuit. The power supply is switched on and off manually or by a control unit, thereby controlling whether the electromagnet 221 has the adsorption force to attract rust.

[0031] An electric ball valve 222 is provided in the middle of the reducing pipe 22, and an electric butterfly valve 223 is provided at its end. The electric ball valve 222 and the electric butterfly valve 223 are switched by manual or control unit. The flow rate of rust and condensate is controlled by the electric ball valve 222 and the electric butterfly valve 223, which can prevent rust from clogging in the reducing pipe 22.

[0032] The control unit is equipped with a liquid level sensor (not shown in the figure). The liquid level sensor is connected to the control unit and is located below the electromagnet 221. When the liquid level of the condensate in the reducing pipe 22 reaches the position of the liquid level sensor, the liquid level sensor sends a signal to the control unit. At this time, the control unit turns on the power, the electric ball valve 222 and the electric butterfly valve 223, and starts the rust removal and drainage work of the rust removal and drainage device 20.

[0033] The rust removal and drainage device for the compressed air pipeline also includes a rust removal ball assembly 30. The rust removal ball assembly 30 is installed at the front end of the compressed air pipeline 10. The rust removal ball assembly 30 includes a rust removal ball 31, a short pipe 32, and a second valve 33. The short pipe 32 is connected to the compressed air pipeline 10, and its side is connected to an inlet pipe. The inlet pipe is equipped with two second valves 33. The rust removal ball 31 is placed between the two second valves 33. There are multiple rust removal balls 31, for example, 10 rust removal balls 31. The second valve 33 is connected to a control unit. The opening and closing of the second valve 33 is controlled manually or by the control unit to control whether the rust removal balls 31 enter the compressed air pipeline 10 for rust removal and drainage. When the 10 rust removal balls 31 are discharged through the reducing pipe 22, the power supply, electric ball valve 222, electric butterfly valve 223, and second valve 33 are turned off manually or by the control unit, thus ending the rust removal and drainage work of the rust removal and drainage device 20 and the rust removal ball device 30.

[0034] The rust-removing ball 31 used in this embodiment is a wire brush ball. The diameter of the wire brush ball is slightly smaller than the minimum inner diameter of the reducer 22, allowing the wire brush ball to pass through the reducer 22 and be discharged, carrying away rust and some condensate from the compressed air pipeline 10. A filter screen (not shown) is installed below the reducer 22. The filter screen can filter rust and condensate, but the wire brush ball cannot pass through. Therefore, the wire brush ball can be recycled and placed in the rust-removing ball assembly 30 for reuse. The wire brush ball can be reused for 1-3 months.

[0035] The working principle of this embodiment is as follows: When the compressed air pipeline 10 in the coal mine is being derusted and drained, there is no need to stop the machine; it can simply remain in operation.

[0036] The compressed air in the compressed air duct 10 keeps the turbine fan 211 in the short connecting pipe 21 working. The turbine fan 211 guides the airflow spirally forward along the pipe wall, forming a stable laminar flow state, reducing wind resistance and improving the compressed air delivery efficiency. At the same time, the centrifugal force of the turbine fan 211 throws rust and condensate towards the reducer pipe 22. At this time, there is rust deposit and condensate retention in the reducer pipe 22. When the condensate level reaches the level sensor, the level sensor sends a signal to the control unit. At this time, the control unit turns on the power, electric ball valve 222, electric butterfly valve 223 and second valve 33. At this time, the electromagnet 221 can attract rust. At the same time, the compressed air pushes the wire brush ball to move along the compressed air duct 10, carrying rust and some condensate to the short connecting pipe 21, and then into the reducer pipe 22 to achieve the purpose of discharging rust and condensate. Ten steel wire brush balls are sequentially introduced into the compressed air pipeline 10 to remove rust and drain water from the compressed air pipeline 10 multiple times. This process can remove rust and condensate from 300m of compressed air pipeline 10, with a rust removal rate of 92%.

[0037] When all 10 wire brush balls have passed through the electric butterfly valve 223, the electric butterfly valve 223 sends a signal to the control unit. At this time, the control unit shuts off the power, electric ball valve 222, electric butterfly valve 223 and second valve 33, completing the rust removal and drainage work. The wire brush balls are recovered through the filter screen and then placed between the second valves 33 for the next rust removal and drainage work.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rust removal and drainage device for compressed air pipelines, characterized in that, It includes a rust removal and drainage component (20), which is installed on the compressed air pipeline (10). The rust removal and drainage component (20) includes a short pipe (21), which is connected to the compressed air pipeline (10) and has a turbo fan (211) inside. The short pipe (21) is connected to a reducing pipe (22), and an electromagnet (221) is provided on the outer periphery of the upper end of the reducing pipe (22). Valves are provided in the middle and at the end of the reducing pipe (22), and the electromagnet (221) is connected to a power source.

2. The rust removal and drainage device for compressed air pipelines according to claim 1, characterized in that, It also includes a rust removal ball assembly (30), which is located at the front end of the compressed air pipeline (10), and the rust removal and drainage assembly (20) is located in front of the branch (11) of the compressed air pipeline (10).

3. The rust removal and drainage device for compressed air pipelines according to claim 2, characterized in that, The rust removal ball assembly (30) includes a rust removal ball (31), which is one or more of polyurethane abrasive balls, wire brush balls, magnetic rust removal balls or nylon brush balls.

4. The rust removal and drainage device for compressed air pipelines according to claim 3, characterized in that, A filter screen is installed below the reducing pipe (22).

5. The rust removal and drainage device for compressed air pipelines according to claim 2, characterized in that, The rust removal ball assembly (30) includes a short pipe (32) and a second valve (33). The short pipe (32) is connected to the compressed air pipeline (10) and the short pipe (32) is connected to the inlet pipe. The inlet pipe is equipped with two second valves (33), and the rust removal ball (31) is placed between the two second valves (33).

6. The rust removal and drainage device for compressed air pipelines according to claim 3, characterized in that, The diameter of the rust-removing ball (31) is slightly smaller than the minimum inner diameter of the reducer (22).

7. The rust removal and drainage device for compressed air pipelines according to claim 1, characterized in that, The valves include an electric ball valve (222) and an electric butterfly valve (223). The electric ball valve (222) is located in the middle of the reducing pipe (22), and the electric butterfly valve (223) is located at the end of the reducing pipe (22).

8. The rust removal and drainage device for compressed air pipelines according to claim 1, characterized in that, The angle between the short pipe (21) and the reducing pipe (22) is 40-50°.

9. The rust removal and drainage device for compressed air pipelines according to claim 8, characterized in that, The angle between the short pipe (21) and the reducing pipe (22) is 45°.

10. The rust removal and drainage device for compressed air pipelines according to claim 1, characterized in that, The inner diameter of the variable diameter tube (22) gradually decreases from top to bottom, and its shrinkage angle is 8-10°.

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