A flue gas automatic control device for furnace discharge system

Abstract

The utility model discloses a flue gas automation control device for a furnace discharge system, and the technical scheme thereof is as follows: it includes a furnace discharge station, a refining station, a casting station and a flue gas purification station, the tops of the furnace discharge station, the refining station and the casting station are all provided with a flue gas outlet pipe, the other end of the flue gas outlet pipe is connected with the flue gas purification station, a thermocouple is installed on one end of the flue gas outlet pipe away from the flue gas purification station, a valve is fixedly installed on the flue gas outlet pipe above the thermocouple, a thermoelectrode is arranged at one end of the thermocouple, and a through hole for the thermoelectrode to penetrate is opened on the flue gas outlet pipe. The utility model arranges a thermocouple, and after flue gas is generated at each station, the thermoelectrode is used to sense the heat of the flue gas in the corresponding flue gas outlet pipe, thereby controlling the opening of the valve on the corresponding flue gas outlet pipe, and the flue gas is discharged to the purification station for processing, thereby realizing the automatic control of flue gas discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial silicon furnaces in the metallurgical industry, in particular to a fume automation control device for a furnace discharge system. Background Art

[0002] Industrial silicon furnace is a metal heating device made of silicon as the main internal material. It can melt metal and is often used in metal injection molding. The furnace discharge system of industrial silicon furnace includes three stations: furnace discharge, refining, and pouring. Usually, at the furnace discharge station of industrial silicon furnace, the silicon package moves in a circle on the package car with the furnace nozzle of the rotating furnace body, and it is not certain that it will be discharged at a certain position. At the refining and pouring stations, the position can be determined. No matter where the silicon package moves, it depends on manual observation to open the nearest exhaust pipe butterfly valve, and the butterfly valve is manually closed after the silicon package moves away. This can easily cause manual misoperation or forgetting to open or close the butterfly valve within 24 hours. For this reason, a flue gas automatic control device for the furnace discharge system is designed. Utility Model Content

[0003] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a flue gas automatic control device for a furnace discharge system to solve the problems mentioned in the background technology.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A flue gas automation control device for a furnace discharge system, comprising a furnace discharge station, a refining station, a casting station and a flue gas purification station, wherein the tops of the furnace discharge station, the refining station and the casting station are all provided with a smoke discharge pipe, the other end of the smoke discharge pipe is connected with the flue gas purification station, a thermocouple is installed on the end of the smoke discharge pipe away from the flue gas purification station, a valve is fixedly installed on the smoke discharge pipe above the thermocouple, a thermoelectrode is arranged at one end of the thermocouple, a through hole for the thermoelectrode to penetrate is provided on the smoke discharge pipe, a fixing groove is provided on the outer side of the through hole, a fixing plate is fixedly sleeved on the end of the thermoelectrode, a first rubber sealing pad is fixedly provided on the inner surface of the fixing plate, and the fixing plate and the first rubber sealing pad are fixed in the fixing groove by a first fastening bolt and a first threaded hole;

[0006] A through groove is provided on the smoke outlet pipe on the opposite side of the thermocouple, a cover plate is inserted in the through groove, a protrusion is fixedly provided on the outer side of the cover plate, a positioning groove is provided on the outer side of the through groove, the protrusion is fixed in the positioning groove by a second fastening bolt and a second threaded hole, and a second rubber sealing pad sealingly connected to the through groove is fixedly provided on the outer surface of the cover plate.

[0007] By adopting the above technical solution and setting up thermocouples, no matter which workstation the silicon package moves to, the hot flue gas from the silicon package rises and is discharged through the corresponding smoke outlet pipe. After the hot electrode in the corresponding smoke outlet pipe senses the heat of the flue gas, the thermocouple sends a signal to automatically open the nearest valve and simultaneously close the valves at other positions or workstations, thereby realizing automatic control of flue gas emissions.

[0008] Preferably, the smoke outlet pipe is configured as a square pipe.

[0009] By adopting the above technical solution, it is convenient to install and fix the thermocouple.

[0010] Preferably, a rubber sealing sleeve is fixedly provided on the inner surface of the first rubber sealing pad, the rubber sealing sleeve is provided on the circumference of the hot electrode, and the rubber sealing sleeve is inserted into the through hole.

[0011] By adopting the above technical solution, the sealing between the hot electrode and the through hole can be increased.

[0012] Preferably, four groups of the first fastening bolts are provided, and the four groups of the first fastening bolts are respectively arranged at four corners of the fixing plate.

[0013] By adopting the above technical solution, the fixing effect of the fixing plate can be increased.

[0014] Preferably, four groups of the protrusions and the positioning grooves are correspondingly arranged, and the four groups of the protrusions and the four groups of the positioning grooves are symmetrically arranged on both sides of the through groove.

[0015] By adopting the above technical solution, the stability of the cover plate installation can be increased and the sealing effect of the second rubber sealing pad can be improved.

[0016] Preferably, the valve is configured as a butterfly valve, and the thermocouple is electrically connected to the valve.

[0017] By adopting the above technical solution, the opening and closing of the valve can be conveniently controlled by the thermocouple.

[0018] In summary, the utility model mainly has the following beneficial effects:

[0019] First, the utility model sets a thermocouple. No matter which workstation the silicon package moves to, the hot flue gas of the silicon package rises and is discharged through the corresponding smoke outlet pipe. After the hot electrode in the corresponding smoke outlet pipe senses the heat of the flue gas, the thermocouple sends a signal to automatically open the nearest valve and close the valves at other positions or workstations, thereby realizing automatic control of flue gas emission.

[0020] Second, the utility model facilitates the disassembly and assembly of the thermocouple by providing a fixing plate, a fixing groove, a first fastening bolt and a first threaded hole, and facilitates the replacement and maintenance of the thermocouple. In addition, by providing a cover plate, a protrusion, a positioning groove, a second fastening bolt and a second threaded hole, the cover plate can be easily disassembled and assembled, so that the thermoelectrode can be regularly cleaned without disassembling the thermocouple, thereby preventing a large amount of soot on the thermoelectrode from affecting the timeliness and accuracy of smoke detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the internal structure of the smoke outlet pipe part of the utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle.

[0025] Figure numerals: 1. furnace discharge station; 2. refining station; 3. casting station; 4. flue gas purification station; 5. smoke outlet pipe; 6. thermocouple; 7. valve; 8. thermoelectrode; 9. through hole; 10. fixing groove; 11. fixing plate; 12. first rubber sealing pad; 13. first fastening bolt; 14. first threaded hole; 15. through groove; 16. cover plate; 17. bump; 18. positioning groove; 19. second fastening bolt; 20. second threaded hole; 21. second rubber sealing pad; 22. rubber sealing sleeve. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] refer to Figure 1-4, a flue gas automation control device for a furnace discharge system, comprising a furnace discharge station 1, a refining station 2, a casting station 3 and a flue gas purification station 4, the furnace discharge station 1, the refining station 2 and the casting station 3 are all provided with a smoke outlet pipe 5 on the top, the other end of the smoke outlet pipe 5 is connected with the flue gas purification station 4, a thermocouple 6 is installed on the end of the smoke outlet pipe 5 away from the flue gas purification station 4, a valve 7 is fixedly installed on the smoke outlet pipe 5 above the thermocouple 6, a thermoelectrode 8 is arranged at one end of the thermocouple 6, a through hole 9 for the thermoelectrode 8 to penetrate is opened on the smoke outlet pipe 5, a fixing groove 10 is opened on the outer side of the through hole 9, a fixing plate 11 is fixedly sleeved on the end of the thermoelectrode 8, a first rubber sealing pad 12 is fixedly arranged on the inner surface of the fixing plate 11, and the fixing plate 11 and the first rubber sealing pad 12 are fixed in the fixing groove 10 by a first fastening bolt 13 and a first threaded hole 14;

[0029] A through groove 15 is provided on the smoke outlet pipe 5 on the opposite side of the thermocouple 6, a cover plate 16 is inserted into the through groove 15, a protrusion 17 is fixedly provided on the outer side of the cover plate 16, a positioning groove 18 is provided on the outer side of the through groove 15, the protrusion 17 is fixed in the positioning groove 18 by a second fastening bolt 19 and a second threaded hole 20, and a second rubber sealing pad 21 sealedly connected to the through groove 15 is fixedly provided on the outer surface of the cover plate 16.

[0030] refer to Figure 1-2 , in order to facilitate the installation and fixation of the thermocouple 6; the smoke outlet pipe 5 is configured as a square pipe.

[0031] refer to Figure 2-3 In order to increase the sealing between the hot electrode 8 and the through hole 9; a rubber sealing sleeve 22 is fixedly provided on the inner surface of the first rubber sealing pad 12, and the rubber sealing sleeve 22 is arranged on the circumference of the hot electrode 8, and the rubber sealing sleeve 22 is inserted into the through hole 9.

[0032] refer to Figure 3 In order to increase the fixing effect of the fixing plate 11 and thus improve the sealing effect of the first rubber sealing pad 12 , four groups of the first fastening bolts 13 are provided, and the four groups of the first fastening bolts 13 are respectively provided at the four corners of the fixing plate 11 .

[0033] refer to Figure 4 In order to increase the stability of the installation of the cover plate 16 and improve the sealing effect of the second rubber sealing pad 21, four groups of the protrusions 17 and the positioning grooves 18 are correspondingly arranged, and the four groups of the protrusions 17 and the four groups of the positioning grooves 18 are symmetrically arranged on both sides of the through groove 15.

[0034] refer to Figure 1, in order to facilitate the control of the opening and closing of the valve 7 by the thermocouple 6; the valve 7 is configured as a butterfly valve, and the thermocouple 6 is electrically connected to the valve 7.

[0035] Principle and advantages of use:

[0036] The utility model sets a thermocouple 6. No matter which station the silicon package moves to, the hot flue gas (50°C to 180°C) of the silicon package rises and is discharged through the corresponding flue gas outlet pipe 5. After the hot electrode 8 in the corresponding flue gas outlet pipe 5 senses the heat of the flue gas, the thermocouple 6 sends a signal, and the nearest butterfly valve is automatically opened through the PLC program, and the butterfly valves at other positions or stations are closed at the same time, so that the automatic control of the flue gas during furnace discharge, refining and pouring is realized.

[0037] By providing the fixing plate 11, the fixing groove 10, the first fastening bolt 13 and the first threaded hole 14, it is convenient to disassemble and assemble the thermocouple 6, and it is convenient to replace and repair the thermocouple 6. In addition, by providing the cover plate 16, the protrusion 17, the positioning groove 18, the second fastening bolt 19 and the second threaded hole 20, it is convenient to disassemble and assemble the cover plate 16, so that the thermoelectrode 8 can be regularly cleaned without disassembling the thermocouple 6, so as to prevent the thermoelectrode 8 from having too much soot affecting the timeliness and accuracy of the smoke detection, so that the valve 7 can be controlled in time.

[0038] 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 flue gas automatic control device for a furnace discharge system, comprising a furnace discharge station (1), a refining station (2), a casting station (3) and a flue gas purification station (4), characterized in that: The tops of the furnace discharge station (1), the refining station (2) and the pouring station (3) are all provided with smoke outlet pipes (5), the other end of the smoke outlet pipes (5) is connected to the smoke purification station (4), a thermocouple (6) is installed on the end of the smoke outlet pipe (5) away from the smoke purification station (4), a valve (7) is fixedly installed on the smoke outlet pipe (5) above the thermocouple (6), and a thermoelectrode (8) is installed on one end of the thermocouple (6). The smoke outlet pipe (5) is provided with a through hole (9) for the thermode (8) to pass through, and a fixing groove (10) is provided on the outer side of the through hole (9). A fixing plate (11) is fixedly sleeved on the end of the thermode (8), and a first rubber sealing gasket (12) is fixedly arranged on the inner surface of the fixing plate (11). The fixing plate (11) and the first rubber sealing gasket (12) are fixed in the fixing groove (10) by means of a first fastening bolt (13) and a first threaded hole (14); A through groove (15) is provided on the smoke outlet pipe (5) on the opposite side of the thermocouple (6), a cover plate (16) is inserted into the through groove (15), a protrusion (17) is fixedly provided on the outer side of the cover plate (16), a positioning groove (18) is provided on the outer side of the through groove (15), the protrusion (17) is fixed in the positioning groove (18) by a second fastening bolt (19) and a second threaded hole (20), and a second rubber sealing pad (21) is fixedly provided on the outer surface of the cover plate (16) and is sealedly connected to the through groove (15).

2. The automatic smoke control device for a furnace discharge system according to claim 1, characterized in that: The smoke outlet pipe (5) is configured as a square pipe.

3. The automatic smoke control device for a furnace discharge system according to claim 1, characterized in that: A rubber sealing sleeve (22) is fixedly arranged on the inner surface of the first rubber sealing pad (12), the rubber sealing sleeve (22) is arranged on the circumference of the hot electrode (8), and the rubber sealing sleeve (22) is inserted into the through hole (9).

4. The automatic smoke control device for a furnace discharge system according to claim 1, characterized in that: Four groups of the first fastening bolts (13) are provided, and the four groups of the first fastening bolts (13) are respectively arranged at four corners of the fixing plate (11).

5. The automatic smoke control device for a furnace discharge system according to claim 1, characterized in that: Four groups of the protrusions (17) and the positioning grooves (18) are correspondingly arranged, and the four groups of the protrusions (17) and the four groups of the positioning grooves (18) are symmetrically arranged on both sides of the through groove (15).

6. The automatic smoke control device for a furnace discharge system according to claim 1, characterized in that: The valve (7) is configured as a butterfly valve, and the thermocouple (6) is electrically connected to the valve (7).

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