CN110656218A - Converter raw material feeding chute flue gas locking device and working method - Google Patents
Converter raw material feeding chute flue gas locking device and working method Download PDFInfo
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- CN110656218A CN110656218A CN201910708200.5A CN201910708200A CN110656218A CN 110656218 A CN110656218 A CN 110656218A CN 201910708200 A CN201910708200 A CN 201910708200A CN 110656218 A CN110656218 A CN 110656218A
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- valve
- lock
- dwang
- locking
- feeding chute
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/466—Charging device for converters
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- Manufacturing & Machinery (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to the technical field of converter feeding equipment, in particular to a converter raw material feeding chute flue gas locking device and a working method, and the technical scheme is as follows: including shell and PLC control system, PLC control system still is provided with card material and detects the procedure, both ends correspond respectively about the shell and are provided with throws the material elephant trunk import and throw the material elephant trunk export, through-hole department cross-under has the dwang, the dwang both ends extend to the shell outside, the dwang is located the inside fixedly connected with lock of department of shell and seals the valve, dwang one end is connected with the rotatory drive arrangement of drive dwang, and the other end is provided with lock and seals valve stop device, after the rotatory certain angle of drive arrangement drive dwang, the lock seals the valve just and throws the material elephant trunk import and seal. The invention has the advantages of good locking and sealing effects, short-term use of the nitrogen sealing device only during feeding and stopping of feeding, reduction of the use amount of nitrogen, low cost and alarm function when material blockage occurs.
Description
Technical Field
The invention relates to the technical field of converter feeding equipment, in particular to a converter raw material feeding chute smoke locking device and a working method.
Background
When converter raw materials start to be fed in a feeding pipe, high-temperature toxic flue gas and flame in the converter can flow up to a collecting hopper at the mouth of the feeding pipe along the feeding pipe, so that the converter raw materials are not environment-friendly and equipment is easily burnt out; in the original design, nitrogen is used for sealing high-temperature toxic flue gas and flame in a feeding pipe in a positive pressure mode for a long time, and equipment facilities such as cables are burnt out due to the fact that the pressure is sometimes insufficient due to external reasons, the sealing is not thorough, the sealing effect is poor and the flame is blown out; and the nitrogen blockage after long-time use also has the defects of high use cost and environmental pollution, and simultaneously, no material blockage alarm disposal mode exists.
To the above-mentioned problem, at present, chinese patent with patent number CN205937869U discloses novel double-deck flap valve device, main technical scheme main points are that use through the sealed cooperation of double-deck board and nitrogen gas that turns over, when the double-deck board that turns over is closed, can use a small amount of nitrogen gas just can play sealed effect, when the double-deck board that turns over is opened, let in the big nitrogen gas of high pressure flow and seal, can play better sealed effect, and reducible nitrogen gas's use amount, the cost is practiced thrift, but double-deck flap valve is sealed effectual, still need let in a small amount of nitrogen gas when double-deck flap valve is closed and seal, the cost is higher, in addition when the card material appears, do not have alarming function.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a converter raw material feeding chute flue gas locking device and a working method thereof, and the device has the advantages of good locking effect, short-time use of a nitrogen sealing device only during feeding and stopping feeding, reduction of the use amount of nitrogen, low cost and warning function when material blockage occurs.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a converter raw materials is thrown material elephant trunk flue gas lock and is sealed device, includes shell and PLC control system, PLC control system still is provided with card material and detects the procedure, both ends correspond respectively about the shell and are provided with throw the import of material elephant trunk and throw the export of material elephant trunk, throw the import of material elephant trunk and throw the export of material elephant trunk and communicate each other, the through-hole has been seted up to the shell side, through-hole department cross-under has the dwang, the dwang both ends extend to the shell outside, the dwang is located the inside fixedly connected with lock of department of shell and seals the valve, dwang one end is connected with the rotatory drive arrangement of drive dwang, and the other end is provided with lock and seals valve stop device, after the rotatory certain angle of drive arrangement drive dwang, lock seal valve just with throw the import of material elephant trunk and seal for edge of a.
By adopting the technical scheme, under the control of the PLC control system, when the materials are fed, the blocking valve is opened, the nitrogen sealing device is delayed for 10 seconds and closed, when the materials are stopped, the nitrogen sealing device is opened and the feeder is closed, then the nitrogen sealing device and the blocking valve are closed after 20 seconds of delay, and the nitrogen sealing device is only used for a short time when the materials are fed and the materials are stopped, so that the cost of using the nitrogen is reduced; the locking valve and the inlet seal of the feeding chute are knife edge type hard seal, the leakage rate is zero when the locking valve is closed, and the locking valve can be disassembled and replaced.
The invention is further configured to: drive arrangement includes crank, pneumatic cylinder and support, the pneumatic cylinder is fixed in support department, the pneumatic cylinder is provided with the action bars, action bars and crank one end swing joint, the crank other end and dwang fixed connection, action bars and crank are on same straight line, crank and dwang mutually perpendicular.
Through adopting above-mentioned technical scheme, pneumatic cylinder drive action pole reciprocates, and the action pole drives the crank rotation, and the crank drives the dwang rotation to drive closing and opening of lock valve door.
The invention is further configured to: the hydraulic cylinder is a reset hydraulic cylinder, the hydraulic valve of the hydraulic cylinder is a double-hydraulic lock, and the hydraulic cylinder is further provided with a manual valve.
Through adopting above-mentioned technical scheme, use two hydraulic lock to improve self-locking performance, ensure that the valve is closed and not fall back, be provided with manual valve, but the manual opening hydrovalve after if breaking down ensures that the lock sealing device normally opens.
The invention is further configured to: the crank is fixedly connected with the rotating rod through a bolt, and the crank is connected with the action rod through a hinge.
Through adopting above-mentioned technical scheme, the linkage effect is better.
The invention is further configured to: the lock valve limiting device comprises a lock valve limiting baffle and a lock valve opening and closing limit device corresponding to the lock valve, the lock valve limiting baffle is fixed at one end of the rotating rod away from the driving device, the lock valve limiting baffle is perpendicular to the rotating rod, the lock valve opening and closing limit device is fixed outside the shell, and when the lock valve is opened, the lock valve limiting baffle just shields the lock valve opening and closing limit device.
Through adopting above-mentioned technical scheme, the spacing shielding plate of lock valve seals the opening and closing of valve limit control lock valve through response lock.
The invention is further configured to: the assembly position of the rotating rod and the shell is provided with a high-temperature core-adjusting bearing, and the outer side of the assembly position is sealed by fluororubber.
By adopting the technical scheme, the high-temperature core-adjusting bearing is used for assembly, and the rotating rod can resist high temperature and can flexibly run; the sealing effect is better by adopting the fluororubber.
The invention is further configured to: the material of the locking valve is 65Mn, and the material of the contact part of the inlet of the feeding chute and the locking valve is 65 Mn.
By adopting the technical scheme, the material has better sealing effect.
The invention is further configured to: the blocking valve and the rotating rod are fixed through welding.
Through adopting above-mentioned technical scheme, through the better firm of welded fastening connection.
A working method of a converter raw material feeding chute flue gas locking device comprises the following steps that when raw materials are fed, a locking valve is in an open state, a locking valve limiting baffle plate triggers a locking valve to be opened and closed to send an opening signal, a nitrogen sealing device is opened to be locked, then a vibrating feeder is started to feed materials into a converter, nitrogen locking is opened, and the nitrogen sealing device is closed after 10 seconds of delay;
b, when the feeding is stopped, opening the nitrogen sealing device and closing the vibrating feeder to stop the feeding, wherein the locking valve is in a closed state, the locking valve limiting baffle plate triggers the locking valve to open and close for limiting to send a closing signal, the nitrogen sealing device is closed after 20 seconds of delay, the delay time is determined according to the field condition, the feeding chute material is mainly completely fallen, and the phenomenon of material blocking caused by closing the locking device too early is prevented, so that the locking device is not closed tightly;
c, when the locking device has a fault, opening the manual valve of the hydraulic cylinder, temporarily setting the locking device to be in a long-opening mode, and carrying out interlocking control after the fault is eliminated;
d, a material blocking alarm reminding program is improved, when the lock seal valve is in a closed state and an open state, the normal closing or opening working time is 5 seconds, and the opening and closing limit of the lock seal valve is triggered to return to a position signal; once the opening and closing limit of the locking valve exceeds 10 seconds and no position signal is returned, the feeding chute is considered to have a material blocking phenomenon, and the PLC control system outputs an alarm signal to the operation room to remind an operator to carry out inspection and treatment.
In conclusion, the invention has the following beneficial effects:
firstly, the locking effect is good, the nitrogen sealing device is only used for a short time when the feeding is stopped, the using amount of nitrogen is reduced, and the cost is low;
and secondly, the alarm function is realized when the material is blocked.
Drawings
FIG. 1 is a front view of a converter raw material charging chute in an opened state of a flue gas sealing device;
FIG. 2 is a side view of the converter raw material charging chute in a closed state of the flue gas seal device;
FIG. 3 is a side view of the converter raw material charging chute in the present example with the flue gas lock device in an open state;
FIG. 4 is a plan view of the converter raw material charging chute with the flue gas seal device closed.
In the figure: 1. a feeding chute outlet; 2. a drive device; 21. a support; 22. a hydraulic cylinder; 221. an action lever; 23. a crank; 3. rotating the rod; 4. a housing; 5. a feeding chute inlet; 6. locking the valve; 7. locking and sealing the valve limiting device; 71. locking and sealing the valve limiting baffle plate; 72. the locking valve is opened and closed for limiting.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in figures 1 to 4, a converter raw material feeding chute flue gas locking device comprises a shell 4 and a PLC control system, wherein the PLC control system is further provided with a material clamping detection program, the upper end and the lower end of the shell 4 are respectively and correspondingly provided with a feeding chute inlet 5 and a feeding chute outlet 1, the feeding chute inlet 5 and the feeding chute outlet 1 are mutually communicated, the side surface of the shell 4 is provided with a through hole, a rotating rod 3 penetrates through the through hole, the two ends of the rotating rod 3 extend to the outside of the shell 4, the rotating rod 3 is fixedly connected with a locking valve 6 at the inner part of the shell 4, one end of the rotating rod 3 is connected with a driving device 2 for driving the rotating rod 3 to rotate, the other end of the rotating rod 3 is provided with a locking valve limiting device 7, and after the driving device 2 drives, the locking valve 6 is just sealed with the feeding chute inlet 5, and the locking valve 6 and the feeding chute inlet 5 are sealed by knife edge type hard seal.
Specifically, the driving device 2 includes a crank 23, a hydraulic cylinder 22 and a support 21, the hydraulic cylinder 22 is fixed at the support 21, the hydraulic cylinder 22 is provided with an action rod 221, the action rod 221 is movably connected with one end of the crank 23, the other end of the crank 23 is fixedly connected with the rotating rod 3, the action rod 221 and the crank 23 are on the same straight line, and the crank 23 is perpendicular to the rotating rod 3.
Specifically, the hydraulic cylinder 22 is a reset hydraulic cylinder, the hydraulic valve of the hydraulic cylinder 22 is a double hydraulic lock, and the hydraulic cylinder 22 is further provided with a manual valve.
Specifically, the crank 23 is fixedly connected to the rotating rod 3 by a bolt, and the crank 23 is connected to the actuating rod 221 by a hinge.
Specifically, the lock seal valve limiting device 7 comprises a lock seal valve limiting baffle plate 71 and a lock seal valve opening and closing limiting 72 corresponding to the lock seal valve limiting baffle plate 71, the lock seal valve limiting baffle plate 71 is fixed at one end of the rotating rod 3 far away from the driving device 2, the lock seal valve limiting baffle plate 71 is perpendicular to the rotating rod 3, the lock seal valve opening and closing limiting 72 is fixed outside the shell 4, and when the lock seal valve 6 is opened, the lock seal valve limiting baffle plate 71 just shields the lock seal valve opening and closing limiting 72.
Specifically, the assembly of the rotating rod 3 and the housing 4 is provided with a high-temperature core-adjusting bearing, and the outer side of the assembly is sealed by using fluororubber.
Specifically, the material of the locking valve 6 is 65Mn, and the material of the contact part of the feeding chute inlet 5 and the locking valve 6 is 65 Mn.
Specifically, the lock seal valve 6 is fixed to the rotating rod 3 by welding.
The implementation principle of the embodiment is as follows: the hydraulic cylinder 22 drives the action rod 221 and the crank 23 to move up and down, the crank 23 drives the rotating rod 3 and the lock sealing valve 6 to rotate, so that the lock sealing valve 6 and the feeding chute inlet 5 are opened and closed, meanwhile, the lock sealing valve limiting baffle plate 71 also rotates along with the rotating rod 3, and the lock sealing valve limiting baffle plate 71 triggers the lock sealing valve opening and closing limiting 72 when rotating to send an opening signal or a closing signal.
A working method of a converter raw material feeding chute flue gas locking device comprises the following steps that when raw materials are fed, a locking valve 6 is in an open state, a locking valve limiting baffle plate 71 triggers a locking valve opening and closing limiting plate 72 to send an opening signal, a nitrogen sealing device is opened to be locked, then a vibrating feeder is started to feed materials into a converter, nitrogen locking is opened, and the nitrogen sealing device is closed after 10 seconds of delay;
b, when the feeding is stopped, opening the nitrogen sealing device and closing the vibrating feeder to stop feeding, wherein the locking valve 6 is in a closed state, the locking valve limiting baffle plate 71 triggers the locking valve opening and closing limiting plate 72 to send a closing signal, the nitrogen sealing device is closed after 20 seconds of delay, the delay time is determined according to the field condition, the feeding chute material is mainly completely fallen, and the phenomenon of material blockage caused by too early closing of the locking device is prevented, so that the locking device is not closed tightly;
c, when the locking device has a fault, opening a manual valve of the hydraulic cylinder 22, temporarily setting the locking device to be in a long-opening mode, and carrying out interlocking control after the fault is eliminated;
d, a material blocking alarm reminding program is improved, when the lock seal valve 6 is in a closed state and an open state, the normal closing or opening working time is 5 seconds, and the lock seal valve opening and closing limit 72 is triggered to return to a position signal; once the opening and closing limit of the locking valve 6 exceeds 10 seconds and no position signal is returned, the feeding chute is considered to have a material blocking phenomenon, and the PLC control system outputs an alarm signal to the operation room to remind an operator to carry out inspection and treatment.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a converter raw materials is thrown material elephant trunk flue gas lock and is sealed device which characterized in that: including shell and PLC control system, PLC control system still is provided with card material and detects the procedure, both ends correspond respectively about the shell and are provided with throws the material elephant trunk import and throw the material elephant trunk export, throw the material elephant trunk import and throw the material elephant trunk export and communicate each other, the through-hole has been seted up to the shell side, through-hole department cross-under has the dwang, the dwang both ends extend to the shell outside, the dwang is located the inside fixedly connected with lock seal valve of department of shell, dwang one end is connected with the rotatory drive arrangement of drive dwang, and the other end is provided with lock seal valve stop device, after the rotatory certain angle of drive arrangement drive dwang, the lock seal valve just with throw the material elephant trunk import and seal for edge of a knife formula hard seal.
2. The converter raw material feeding chute flue gas locking device as claimed in claim 1, characterized in that: drive arrangement includes crank, pneumatic cylinder and support, the pneumatic cylinder is fixed in support department, the pneumatic cylinder is provided with the action bars, action bars and crank one end swing joint, the crank other end and dwang fixed connection, action bars and crank are on same straight line, crank and dwang mutually perpendicular.
3. The converter raw material feeding chute flue gas locking device as claimed in claim 2, characterized in that: the hydraulic cylinder is a reset hydraulic cylinder, the hydraulic valve of the hydraulic cylinder is a double-hydraulic lock, and the hydraulic cylinder is further provided with a manual valve.
4. The converter raw material feeding chute flue gas locking device as claimed in claim 2, characterized in that: the crank is fixedly connected with the rotating rod through a bolt, and the crank is connected with the action rod through a hinge.
5. The converter raw material feeding chute flue gas locking device as claimed in claim 1, characterized in that: the lock valve limiting device comprises a lock valve limiting baffle and a lock valve opening and closing limit corresponding to the lock valve limiting baffle, the lock valve limiting baffle is fixed at one end of the rotating rod away from the driving device, the lock valve limiting baffle is perpendicular to the rotating rod, the lock valve opening and closing limit is fixed outside the shell, and when the lock valve is opened, the lock valve limiting baffle just shields the lock valve opening and closing limit.
6. The converter raw material feeding chute flue gas locking device as claimed in claim 1, characterized in that: the assembly position of the rotating rod and the shell is provided with a high-temperature core-adjusting bearing, and the outer side of the assembly position is sealed by fluororubber.
7. The converter raw material feeding chute flue gas locking device as claimed in claim 1, characterized in that: the material of the locking valve is 65Mn, and the material of the contact part of the inlet of the feeding chute and the locking valve is 65 Mn.
8. The converter raw material feeding chute flue gas locking device as claimed in claim 1, characterized in that: the lock seal valve is fixed with the rotating rod through welding.
9. A working method of a converter raw material feeding chute flue gas locking device is characterized in that: a, when raw materials are put into the furnace, firstly, a locking valve is in an open state, a locking valve limiting baffle plate triggers a locking valve to open and close to send an opening signal, a nitrogen sealing device is opened firstly to be sealed, then, a vibrating feeder is started to feed the materials into the furnace, nitrogen locking is opened, and the nitrogen sealing device is closed after 10 seconds of delay;
b, when the feeding is stopped, opening the nitrogen sealing device and closing the vibrating feeder to stop the feeding, wherein the locking valve is in a closed state, the locking valve limiting baffle plate triggers the locking valve to open and close for limiting to send a closing signal, the nitrogen sealing device is closed after 20 seconds of delay, the delay time is determined according to the field condition, the feeding chute material is mainly completely fallen, and the phenomenon of material blocking caused by closing the locking device too early is prevented, so that the locking device is not closed tightly;
c, when the locking device has a fault, opening the manual valve of the hydraulic cylinder, temporarily setting the locking device to be in a long-opening mode, and carrying out interlocking control after the fault is eliminated;
d, a material blocking alarm reminding program is improved, when the lock seal valve is in a closed state and an open state, the normal closing or opening working time is 5 seconds, and the opening and closing limit of the lock seal valve is triggered to return to a position signal; once the opening and closing limit of the locking valve exceeds 10 seconds and no position signal is returned, the feeding chute is considered to have a material blocking phenomenon, and the PLC control system outputs an alarm signal to the operation room to remind an operator to carry out inspection and treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708200.5A CN110656218A (en) | 2019-08-01 | 2019-08-01 | Converter raw material feeding chute flue gas locking device and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910708200.5A CN110656218A (en) | 2019-08-01 | 2019-08-01 | Converter raw material feeding chute flue gas locking device and working method |
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| Publication Number | Publication Date |
|---|---|
| CN110656218A true CN110656218A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910708200.5A Pending CN110656218A (en) | 2019-08-01 | 2019-08-01 | Converter raw material feeding chute flue gas locking device and working method |
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| CN (1) | CN110656218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184034A (en) * | 2021-12-18 | 2022-03-15 | 芜湖华洁环保设备有限公司 | Converter coarse ash conveying scraper conveyor comprehensive protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4363470A (en) * | 1981-12-02 | 1982-12-14 | United States Steel Corporation | Gas-entrained particulate feed system |
| CN205258518U (en) * | 2015-12-03 | 2016-05-25 | 河北钢铁股份有限公司承德分公司 | A discharging valve device for material is thrown in converter |
| CN106350628A (en) * | 2016-11-14 | 2017-01-25 | 上海宝匀机电自动化设备有限公司 | Detection device for material blocking of charging bucket at top of blast furnace and detection method |
| CN206929348U (en) * | 2017-07-25 | 2018-01-26 | 中天钢铁集团有限公司 | Converter blanking high temperature fire proof seal valve |
| CN108193015A (en) * | 2018-03-20 | 2018-06-22 | 山东钢铁股份有限公司 | A kind of converter feeding chute device and converter blanking fault detection method |
-
2019
- 2019-08-01 CN CN201910708200.5A patent/CN110656218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4363470A (en) * | 1981-12-02 | 1982-12-14 | United States Steel Corporation | Gas-entrained particulate feed system |
| CN205258518U (en) * | 2015-12-03 | 2016-05-25 | 河北钢铁股份有限公司承德分公司 | A discharging valve device for material is thrown in converter |
| CN106350628A (en) * | 2016-11-14 | 2017-01-25 | 上海宝匀机电自动化设备有限公司 | Detection device for material blocking of charging bucket at top of blast furnace and detection method |
| CN206929348U (en) * | 2017-07-25 | 2018-01-26 | 中天钢铁集团有限公司 | Converter blanking high temperature fire proof seal valve |
| CN108193015A (en) * | 2018-03-20 | 2018-06-22 | 山东钢铁股份有限公司 | A kind of converter feeding chute device and converter blanking fault detection method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184034A (en) * | 2021-12-18 | 2022-03-15 | 芜湖华洁环保设备有限公司 | Converter coarse ash conveying scraper conveyor comprehensive protection device |
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Application publication date: 20200107 |