Carbon monoxide emission equipment for steel rolling mill

Abstract

The utility model discloses carbon monoxide emission equipment for a rolling mill, which is characterized in that a left arc-shaped block is attached to the surface wall of the bottom end of a gas conveying pipe, a right arc-shaped block is attached to the surface wall of the gas conveying pipe and positioned on one side of the left arc-shaped block, and attaching blocks are fixedly connected to two ends of the left arc-shaped block and the right arc-shaped block; the left arc-shaped block and the right arc-shaped block are locked and fixed through matched use of the attaching block and the locking bolt, the attaching installation mode is simple and convenient, then the support is fixed to one side of the gas conveying pipe, the gas conveying pipe can be fixed conveniently, and the gas conveying pipe can be fixed conveniently. The environment outside the pipeline is monitored through the carbon monoxide alarm on the support, an alarm is given out in time when carbon monoxide leaks, the situation that the surrounding environment is polluted or human bodies of workers are hurt due to the fact that carbon monoxide leaks in the conveying process is prevented, and the use safety of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas emission, in particular to a carbon monoxide emission device for a rolling mill. Background Technique

[0002] The pressure processing process of changing the shape of ingots and billets between rotating rolls is called rolling. The rolling methods can be divided into hot rolling and cold rolling according to different rolling temperatures. The billets coming out of the steelmaking plant are only semi-finished products and must be rolled in the rolling mill to become qualified products. The continuous casting billets sent from the steelmaking plant first enter the heating furnace, and then after being repeatedly rolled by the primary rolling mill, they enter the finishing mill. During the use of the heating furnace, gas is burned and a large amount of carbon monoxide will be discharged to the outside. Carbon monoxide needs to be adsorbed and discharged to a specific carbon monoxide treatment device for adsorption reaction treatment to prevent it from being directly discharged into the air.

[0003] However, there is currently no monitoring device on the outside of the carbon monoxide emission channel. When carbon monoxide leaks into the external environment, the situation cannot be understood in time. Carbon monoxide will pollute the surrounding environment and cause poisoning to the staff. Therefore, the utility model provides a carbon monoxide emission device for a rolling mill to meet people's needs. Content of the Utility Model

[0004] The utility model provides a carbon monoxide emission device for a rolling mill, which can effectively solve the problem that there is no monitoring device on the outside of the carbon monoxide emission channel as proposed in the above background technique. When carbon monoxide leaks into the external environment, the situation cannot be understood in time. Carbon monoxide will pollute the surrounding environment and cause poisoning to the staff.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A carbon monoxide emission device for a rolling mill includes an air supply pipe. A three-way solenoid valve is fixedly installed at the top of the air supply pipe. One end of the three-way solenoid valve is fixedly connected to an air inlet pipe. The top of the three-way solenoid valve is fixedly connected to an air delivery pipe. A three-way connector is fixedly installed at the top of the air delivery pipe. The left arc-shaped block is fitted and installed on the outer wall of the bottom end of the air delivery pipe. The right arc-shaped block is fitted and installed on the outer wall of the air delivery pipe at a position on one side of the left arc-shaped block. Both ends of the left arc-shaped block and the right arc-shaped block are fixedly connected to fitting blocks. A locking bolt is installed in the middle of the fitting block. A bracket is fixedly installed at the top of the right arc-shaped block. A carbon monoxide alarm is fixedly installed in the middle of the top of the bracket.

[0006] The top end of the three-way connector is fixedly connected with an exhaust pipe, a control valve is installed at the top of the exhaust pipe, a suction fan is fixedly connected to the top of the control valve, an anti-blow valve is fixedly installed at one end of the three-way connector, a connecting pipe is fixedly connected to one end of the anti-blow valve, and an anti-blow fan is installed at one end of the connecting pipe.

[0007] Preferably, one end of the intake pipe is connected to the gas transmission pipeline, and the bottom end of the air supply pipe faces the heating furnace.

[0008] Preferably, the left arc-shaped block and the right arc-shaped block are closely attached, the locking bolt observes the attaching block, and the left arc-shaped block and the right arc-shaped block are fixedly connected by the locking bolt and the attaching block.

[0009] Preferably, a waste gas pipe is fixedly connected to the top end of the suction fan, and the waste gas pipe is connected to the carbon monoxide treatment device.

[0010] Preferably, a base is fixedly installed at one end of the bottom of the anti-blow fan, an arc-shaped support frame is fixedly installed on the top of the base, a dust filter net is embedded in the middle of the arc-shaped support frame, and a pull-out block is fixedly installed at the top end of the dust filter net.

[0011] Preferably, the dust filter net is closely attached to the surface of the air inlet of the anti-blow fan, a fixing ring plate is fixedly installed at the edge of the dust filter net, an installation groove is arranged inside the arc-shaped support frame, and the fixing ring plate is movably clamped inside the installation groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is scientific and reasonable, and it is safe and convenient to use:

[0013] 1. There are provided a left arc-shaped block, a right arc-shaped block, an attaching block, a locking bolt, a bracket and a carbon monoxide alarm. Through the combined use of the attaching block and the locking bolt, the left arc-shaped block and the right arc-shaped block are locked and fixed. The attaching and installing method is simple, and then the bracket is fixed on one side of the gas transmission pipe. The carbon monoxide alarm on the bracket is used to monitor the environment outside the pipe, and an alarm is sent out in time when carbon monoxide leaks, preventing the carbon monoxide from leaking during the transmission process and causing pollution to the surrounding environment or harm to the human body of the staff, thus improving the safety of equipment use.

[0014] 2. A three-way solenoid valve, a three-way connector, a control valve, a backflush valve, a connecting pipe and a backflush blower are provided. Through the mutual cooperation of the three-way solenoid valve, the control valve and the backflush valve, before the conversion between the gas transmission and the flue gas suction operations, the gas transmission channel is closed, and the exhaust channel of the upper exhaust fan is closed. Furthermore, by generating an air flow with the backflush blower, the gas remaining inside the air supply pipe during the conversion process can be blown downward into the heating furnace, preventing the gas remaining in the pipeline from being sucked and discharged together during the direct flue gas suction operation, which is likely to cause waste of resources and an increase in the exhaust gas emissions, and making the commutation and backflush operations smoother.

[0015] 3. A base, an arc-shaped support frame, a dust filter screen and a pull-out block are provided. By using the base and the arc-shaped support frame in cooperation, the dust filter screen is installed and fixed to cover the air inlet of the backflush blower, filtering the air entering the interior of the backflush blower, intercepting particulate impurities in the air, and preventing the impurities from entering other structures along with the air flow and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.

[0017] In the drawings:

[0018] Figure 1 is a schematic structural view of the present invention;

[0019] Figure 2 is a schematic installation structural view of the dust filter screen of the present invention;

[0020] Figure 3 is a schematic installation structural view of the right arc-shaped block of the present invention;

[0021] Figure 4 is a schematic installation structural view of the arc-shaped support frame of the present invention;

[0022] Reference numerals in the drawings: 1, air supply pipe; 2, three-way solenoid valve; 3, intake pipe; 4, gas transmission pipe; 5, three-way connector; 6, left arc-shaped block; 7, right arc-shaped block; 8, fitting block; 9, locking bolt; 10, bracket; 11, carbon monoxide alarm; 12, exhaust pipe; 13, control valve; 14, exhaust fan; 15, backflush valve; 16, connecting pipe; 17, backflush blower; 18, base; 19, arc-shaped support frame; 20, dust filter screen; 21, pull-out block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following describes the preferred embodiments of the present invention with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0024] Embodiment: As Figures 1-4 shown, the present utility model provides a technical solution, a carbon monoxide emission device for a rolling mill, including an air supply pipe 1. A three-way solenoid valve 2 is fixedly installed at the top end of the air supply pipe 1. One end of the three-way solenoid valve 2 is fixedly connected to an intake pipe 3. One end of the intake pipe 3 is connected to a gas transmission pipeline. The bottom end of the air supply pipe 1 faces the heating furnace. The top end of the three-way solenoid valve 2 is fixedly connected to a gas transmission pipe 4. A three-way connector 5 is fixedly installed at the top of the gas transmission pipe 4. A left arc-shaped block 6 is fitted and installed on the outer wall of the bottom end of the gas transmission pipe 4. A right arc-shaped block 7 is fitted and installed on the outer wall of the gas transmission pipe 4 at a position on one side of the left arc-shaped block 6. Both ends of the left arc-shaped block 6 and the right arc-shaped block 7 are fixedly connected with fitting blocks 8. A locking bolt 9 is installed in the middle of the fitting block 8. The left arc-shaped block 6 and the right arc-shaped block 7 are closely fitted. The locking bolt 9 is observed with the fitting block 8. The left arc-shaped block 6 and the right arc-shaped block 7 are fixedly connected through the locking bolt 9 and the fitting block 8. A bracket 10 is fixedly installed at the top of the right arc-shaped block 7. A carbon monoxide alarm 11 is fixedly installed in the middle of the top end of the bracket 10. Through the combined use of the fitting block 8 and the locking bolt 9, the left arc-shaped block 6 and the right arc-shaped block 7 are locked and fixed. The fitting and installation method is simple. Furthermore, the bracket 10 is fixed on one side of the gas transmission pipe 4. The carbon monoxide alarm 11 on the bracket 10 is used to monitor the environment outside the pipeline. When carbon monoxide leaks, an alarm is issued in time to prevent carbon monoxide from leaking during the transportation process and polluting the surrounding environment or causing harm to the human body of the staff, improving the safety of equipment use;

[0025] One end of the three-way connector 5 is fixedly connected to an exhaust pipe 12. A control valve 13 is installed at the top of the exhaust pipe 12. The top end of the control valve 13 is fixedly connected to an exhaust fan 14. The top end of the exhaust fan 14 is fixedly connected to an exhaust gas pipe, and the exhaust gas pipe is connected to a carbon monoxide treatment device. One end of the three-way connector 5 is fixedly installed with a backflush valve 15. One end of the backflush valve 15 is fixedly connected to a connecting pipe 16. A backflush blower 17 is installed at one end of the connecting pipe 16. Through the mutual cooperation of the three-way solenoid valve 2, the control valve 13 and the backflush valve 15, before the conversion between the gas transmission and the flue gas suction operations, the gas transmission channel is closed, and the exhaust channel of the exhaust fan 14 above is closed. Furthermore, by using the airflow generated by the backflush blower 17, the gas remaining in the air supply pipe 1 during the conversion process can be blown downward into the heating furnace, preventing the gas remaining in the pipeline from being sucked and discharged together during the direct flue gas suction operation, which is likely to cause waste of resources and an increase in the exhaust gas emissions, making the commutation and backflush operations smoother;

[0026] One end of the bottom of the reverse blower 17 is fixedly installed with a base 18. The top of the base 18 is fixedly installed with an arc-shaped support frame 19. A dust filter net 20 is embedded in the middle of the arc-shaped support frame 19. The top end of the dust filter net 20 is fixedly installed with a pull block 21. The dust filter net 20 is closely attached to the surface of the air inlet of the reverse blower 17. A fixing ring plate is fixedly installed on the edge of the dust filter net 20. An installation groove is arranged inside the arc-shaped support frame 19. The fixing ring plate is movably clamped inside the installation groove. Through the combined use of the base 18 and the arc-shaped support frame 19, the dust filter net 20 is installed and fixed, so that it covers the air inlet of the reverse blower 17, filters the air entering the inside of the reverse blower 17, intercepts the particulate impurities in the air, and prevents the impurities from entering other structures along with the air flow and causing damage.

[0027] The working principle and usage process of the utility model: First, the left arc-shaped block 6 and the right arc-shaped block 7 are closely attached to the outer wall of the bottom end of the air delivery pipe 4, and the fitting blocks 8 at both ends of the left arc-shaped block 6 and both ends of the right arc-shaped block 7 are mutually attached and spliced. The locking bolt 9 is used to lock and fix them. The bracket 10 is fixed on the top of the right arc-shaped block 7, and the carbon monoxide alarm 11 on its top is located outside the air delivery pipe 4 and is exposed to the external environment of the exhaust passage to monitor the carbon monoxide content in the surrounding environment.

[0028] During the steel rolling process, the three-way solenoid valve 2 opens the connection end with the air inlet pipe 3 and closes the connection end with the air delivery pipe 4. The gas enters from the air inlet pipe 3 and burns in the heating furnace of the steel rolling along the three-way solenoid valve 2 and the air supply pipe 1. After a period of time, the air supply and combustion process is converted into a flue gas suction state. At this time, the connection end of the three-way solenoid valve 2 with the air inlet pipe 3 is closed, and the connection end with the air delivery pipe 4 is opened. When the gas is transported, there is some gas remaining inside the air supply pipe 1. The reverse blower 17 starts to generate an air flow and blows towards the connecting pipe 16. The reverse blow valve 15 is opened, and the control valve 13 is closed. The air flow will pass downward through the air delivery pipe 4 and enter the inside of the air supply pipe 1, blowing the remaining gas into the heating furnace to prevent the gas from flowing upward and being directly discharged. The gas entering the inside of the reverse blower 17 is filtered by the dust filter net 20, and the particulate impurities in the gas are intercepted. There are many particulate impurities in the air inside the steel rolling environment, and the interception can prevent the particles from traveling along with the air flow and damaging mechanisms such as the reverse blow valve 15.

[0029] Then, turn off the reverse blower 17 and the reverse blow valve 15, turn on the control valve 13 and the exhaust fan 14. The exhaust fan 14 generates an air flow to adsorb the gas below and adsorb the carbon monoxide generated by combustion. After passing through the air supply pipe 1, the three-way solenoid valve 2, the gas transmission pipe 4, the three-way connector 5, the exhaust pipe 12 and the exhaust fan 14, the carbon monoxide is transported to the carbon monoxide treatment device. After a period of air suction, close the connection end of the control valve 13, the three-way solenoid valve 2 and the gas transmission pipe 4, and turn on the connection end of the three-way solenoid valve 2 and the intake pipe 3 to continue the transportation of the gas. The transportation of the gas and the suction of the carbon monoxide in the flue gas are converted regularly. During the process of discharging carbon monoxide, the carbon monoxide alarm 11 always monitors and issues an alarm in time when carbon monoxide leakage occurs to remind the staff.

[0030] Finally, it should be noted that the above are only the preferred examples of the present invention and are not used to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carbon monoxide emission device for a steel rolling mill, comprising an air supply pipe (1), characterized in that: A three-way solenoid valve (2) is fixedly installed at the top of the air supply pipe (1), one end of the three-way solenoid valve (2) is fixedly connected to an air intake pipe (3), the top of the three-way solenoid valve (2) is fixedly connected to an air supply pipe (4), the top of the air supply pipe (4) is fixedly installed with a three-way connector (5), a left arc block (6) is fitted on the surface wall of the bottom end of the air supply pipe (4), a right arc block (7) is fitted on the surface wall of the air supply pipe (4) at a position on one side of the left arc block (6), both ends of the left arc block (6) and the right arc block (7) are fixedly connected with a fitting block (8), a locking bolt (9) is installed in the middle of the fitting block (8), a bracket (10) is fixedly installed on the top of the right arc block (7), and a carbon monoxide alarm (11) is fixedly installed in the middle of the top of the bracket (10); The top of the three-way connector (5) is fixedly connected to an exhaust pipe (12), the top of the exhaust pipe (12) is installed with a control valve (13), the top of the control valve (13) is fixedly connected to an exhaust fan (14), one end of the three-way connector (5) is fixedly installed with a back-blow valve (15), one end of the back-blow valve (15) is fixedly connected to a connecting pipe (16), and one end of the connecting pipe (16) is installed with a back-blow fan (17).

2. The carbon monoxide emission device for a steel rolling mill according to claim 1, characterized in that: One end of the air inlet pipe (3) is connected to the gas delivery pipeline, and the bottom end of the air supply pipe (1) faces the heating furnace.

3. The carbon monoxide emission device for a steel rolling mill according to claim 1, characterized in that: The left arc block (6) and the right arc block (7) are tightly fitted, and the locking bolt (9) is connected to the fitting block (8). The left arc block (6) and the right arc block (7) are fixedly connected by the locking bolt (9) and the fitting block (8).

4. The carbon monoxide emission device for a steel rolling mill according to claim 1, characterized in that: The top end of the exhaust fan (14) is fixedly connected to an exhaust pipe, and the exhaust pipe is connected to a carbon monoxide treatment device.

5. The carbon monoxide emission device for a steel rolling mill according to claim 1, characterized in that: A base (18) is fixedly mounted at one end of the bottom of the anti-blowing blower (17), an arc-shaped support frame (19) is fixedly mounted on the top of the base (18), a dust filter (20) is embedded in the middle of the arc-shaped support frame (19), and a pull-out block (21) is fixedly mounted on the top of the dust filter (20).

6. The carbon monoxide emission device for a steel rolling mill according to claim 5, characterized in that: The dust filter (20) is closely attached to the surface of the air inlet of the back-blowing air blower (17), a fixed ring plate is fixedly mounted on the edge of the dust filter (20), a mounting groove is arranged inside the arc-shaped support frame (19), and the fixed ring plate is movably clamped inside the mounting groove.

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