CN2890073Y - Blast furnace tuyere sampler - Google Patents
Blast furnace tuyere sampler Download PDFInfo
- Publication number
- CN2890073Y CN2890073Y CN 200620070393 CN200620070393U CN2890073Y CN 2890073 Y CN2890073 Y CN 2890073Y CN 200620070393 CN200620070393 CN 200620070393 CN 200620070393 U CN200620070393 U CN 200620070393U CN 2890073 Y CN2890073 Y CN 2890073Y
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- sampling
- range finding
- motor
- blast furnace
- wheel box
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Abstract
The utility model relates to a blast furnace tuyere sampler, comprising a rail, a chassis, a frame, a hydraulic control mechanism and a sampling mechanism, wherein, the sampling mechanism comprises a wind-free sampling component and a wind sampling component. The wind-free sampling component comprises a gearshift tank, a transition pipe, an adjustable pole of the tuyere centre, a sheathing and a wind-free sampling plate. At the chassis is arranged a stud, the gearshift tank is moveably connected up and down with the stud via the adjustable pole of the tuyere centre; the sampling pipe is connected with the gearshift tank via the transition pipe. On the sheathing is arranged a gear strip, a sheathing groove is arranged in the sampling pipe. The sheathing meshes with the gear in the gearshift tank and inserts into the sheathing grove connected with the sampling groove. The wind sampling component comprises a gearshift tank, a range finding pipe for sampling gas, a sealed cover, a range finding core stick for sampling gas and a container wherein the sealed cover is arranged at the gas sampling end of the range finding core stick for sampling gas and the other end of the range finding pipe for sampling gas is connected with the gearshift tank. Under the range finding core stick for sampling gas is provided with the gear strip meshing with the gear in the gearshift tank. The range finding core stick for sampling gas pieces into the gearshift tank and into the range finding pipe for sampling gas and the container is communicated with the range finding core stick for sampling gas via a valve.
Description
Technical field:
The utility model relates to a kind of device that is used for metallurgical ironmaking tuyere of blast furnace place sampling, is in particular a kind of tuyere sampler of blast furnace that when damping down or band produce humorously blast furnace center solid material and gas material is taken out.
Background technology:
At present, blast furnace aborning can not sample examination, and this is to quality of furnace charge and proportioning good test measure of supervision not, in order to reduce production costs, good detection method is arranged when producing in the stove, have multi-functional sampler to be used for the blast furnace sampling.(promptly can both take a sample at damping down and band wind, and energy measurement goes out the multifunction sampling machine of convolution region length) get the solid sample at stove center from blast-furnace tuyere, the technical qualities of these samples when damping down and the quality of band when producing humorously be different, the sampling of band wind could reflect sample quality in the blast furnace fully, solid sample is not only got in the sampling of band wind, the more important thing is and get gaseous sample, the product confrontation of gaseous sample is produced more important, at present, China does not have the sampling of multifunctional belt wind, more can not accurately measure the length in the district of circling round, the length in the district of circling round all is theoretical calculate, can not actual measurement; At this situation, press for and the damping down sampling can revolve the tuyere sampler of blast furnace of section length with wind sampling and survey time again.
Summary of the invention:
The purpose of this utility model, exactly in order to solve the above-mentioned defective of prior art, and a kind of tuyere sampler of blast furnace that when damping down or band produce humorously, blast furnace center solid material and gas material is taken out that provides.
The purpose of this utility model can realize by following technical solution:
Tuyere sampler of blast furnace, it includes track, the chassis, back chain seat, preceding chain seat, frame, on frame, be provided with hydraulic control, sampling mechanism, chain-drive mechanism, frame is fixed on the chassis, slide and be located on the track in the chassis, described sampling mechanism has included damping down sampling assemble or band wind sampling assemble, described damping down sampling assemble includes wheel box, transition conduit, center, air port absolute altitude governor lever, cover plate, the damping down stopple coupon, on the chassis, be provided with column, wheel box through port center absolute altitude governor lever constitutes the formula of moving up and down with column and is connected, stopple coupon is connected with wheel box by transition conduit, on the cover board be provided with the gear bar, be provided with slot cover on stopple coupon, the toothing in cover plate and the wheel box is also inserted in the slot cover that is connected on the stopple coupon; Described band wind sampling assemble includes wheel box, gets the gas range tube, sealing cover, get gas range finding plug, container, sealing cover is installed in the gas-taking end of getting gas range finding plug, the other end of getting the gas range tube is connected with wheel box, below getting gas range finding plug, be provided with tooth bar, toothing in tooth bar and the wheel box, get gas range finding plug and insert wheel box and get in the gas range tube, container by valve with get the gas plug of finding range and be communicated with.
The purpose of utility model also can further realize by following technical measures:
Aforesaid tuyere sampler of blast furnace, sealing cover was that high-pressure blast is tightly connected with getting the gas range tube when wherein said band wind sampling was found range.
Aforesaid tuyere sampler of blast furnace, wherein said hydraulic control includes hydraulic reservoir, injection pump, motor, the hydraulic integrated control valve group, the electrode points tensimeter, oil motor, motor, electric motor is vertical to be installed on the hydraulic reservoir, injection pump is installed in the inside of hydraulic reservoir, the hydraulic integrated control valve group is installed on the cover plate of hydraulic reservoir, the electrode points tensimeter is installed on the control valve group, motor is installed on the power chain and bearing of chain wheel set, with high-pressure line each parts is unified into hydraulic control system, the pressure oil of starting motor injection pump output is connected with motor with motor by the hydraulic integrated control valve group, and motor is connected with the wheel box of damping down sampling assemble or band wind sampling assemble.
Aforesaid tuyere sampler of blast furnace, wherein said cover plate are the cover plate of a band cavity, which is provided with two cavitys of intake antrum and backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
Aforesaid tuyere sampler of blast furnace, wherein said stopple coupon are an arc clamp, and its arc tube wall is one to be provided with the clamp wall of intake antrum and two cavitys of backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
Aforesaid tuyere sampler of blast furnace, it is wherein said that to get gas range finding plug be a circular clamp, and its circular tube wall is one to be provided with the clamp wall of intake antrum and backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
Aforesaid tuyere sampler of blast furnace, wherein said chassis is welded by steel construction, is provided with 4 iron tyre below, and 4 iron tyre are connected with track.
Aforesaid tuyere sampler of blast furnace, the gear of wherein said wheel box are the interchangeable gear, respectively with get gas range finding plug below be provided with tooth bar or on the cover board be provided with the engagement of gear bar.
The utility model has solved band wind and damping down can both be taken a sample, and gets solid sample and gaseous sample under the situation about can produce humorously in high furnace zone; When realizing that high furnace zone is produced humorously, measure the length in the district of circling round, solved a tractor serves several purposes, promptly a sampler can adapt to small furnace and big blast furnace, that is: 750m
3-4000m
3Blast furnace can both use; Physical construction is small and exquisite rationally, has solved 1000m
3Product range finding humorously can both be taken a sample and be with to following blast-furnace tuyere problem of sampling can at damping down and band wind.
The purpose of this utility model, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is a plan structure synoptic diagram of the present utility model.
Fig. 3 is the cross section structure synoptic diagram of the utility model stopple coupon.
Fig. 4 is the structural representation of the utility model band wind sampling assemble.
Fig. 5 gets gas range tube cross section structure synoptic diagram for the utility model.
1, track is 2; 2, oil motor is 1; 3, cover plate is 1; 4, oil motor is 1; 5, chassis 1 cover; 6, electrical control cabinet 1 cover; 7, hydraulic integrated control valve group 1 cover; 8, hydraulic reservoir is 1; 9, back chain seat is 1; 10, injection pump is 1; 11, motor is 1; 12, get 1 of gas range finding plug; 13, container (band valve) is 1; 14, the electrode points tensimeter is 1; 15, center, air port absolute altitude governor lever is 1; 16, sealing cover is 1; 17, get 1 of gas range tube, 18, get gas range finding water cooling labyrinth; 19, cover plate water cooling labyrinth; 20, stopple coupon water cooling labyrinth; 21, preceding chain seat is 1; 22, transition conduit is 1; 23, the damping down stopple coupon is 1; 24, wheel box (damping down sampling and the different needs of band wind sampling range finding internal gear change built-in gear) 2 covers; 25, guide wheel 2 covers; 26, power chain and bearing 1 cover; 27, chain.
Embodiment:
Shown in Fig. 1-shown in Figure 5, it includes track 1, chassis 5, back chain seat 9, preceding chain seat 21, frame 28 the utility model, on frame 28, be provided with hydraulic control, sampling mechanism, chain-drive mechanism, frame are fixed on the chassis, described chassis 5 is welded by steel construction, be provided with 4 iron tyre below, 4 iron tyre are connected with track.Slide and be located on the track in the chassis, sampling mechanism has included damping down sampling assemble or band wind sampling assemble, described damping down sampling assemble includes wheel box 24, transition conduit 22, center, air port absolute altitude governor lever 15, cover plate 3, damping down stopple coupon 23, on the chassis, be provided with column, wheel box 24 through port center absolute altitude governor levers 15 constitute the formula of moving up and down with column and are connected, stopple coupon is connected with wheel box 24 by transition conduit 22, on cover plate 3, be provided with the gear bar, on stopple coupon, be provided with slot cover, it is the cover plate of a band cavity that cover plate 3 also inserts the interior described cover plate 3 of the slot cover that is connected on the stopple coupon with the toothing in the wheel box, which is provided with two cavitys of intake antrum and backwater cavity, intake antrum is communicated with the high pressure water source, backwater cavity is in communication with the outside, stopple coupon 23 is an arc clamp, its arc tube wall is one to be provided with the clamp wall of intake antrum and two cavitys of backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside; Band wind sampling assemble includes wheel box 24, gets gas range tube 17, sealing cover 16, get gas range finding plug 12, container 13, sealing cover 16 is installed in the gas-taking end of getting gas range finding plug 12, during band wind sampling range finding sealing cover 16 with get gas range tube 17 and be tightly connected for high-pressure blast.The other end of getting gas range tube 17 is connected with wheel box, below getting gas range finding plug 12, be provided with tooth bar, toothing in tooth bar and the wheel box, getting gas range finding plug 12 inserts wheel box 24 and gets in the gas range tube 17, container 13 by valve with get gas range finding plug 12 and be communicated with, getting the gas plug 12 of finding range is a circular clamp, its circular tube wall is one to be provided with the clamp wall of intake antrum and backwater cavity, intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.Hydraulic control includes hydraulic reservoir 8, injection pump 10, motor 11, hydraulic integrated control valve group 7, electrode points tensimeter 14, oil motor 4, motor 2, electric motor 11 vertical being installed on the hydraulic reservoir 8, injection pump 10 is installed in the inside of hydraulic reservoir 8, hydraulic integrated control valve group 7 is installed on the cover plate of hydraulic reservoir 8, electrode points tensimeter 14 is installed on the control valve group 7, oil motor 4 is installed on the power chain and bearing 26 of chain wheel set, with high-pressure line each parts is unified into hydraulic control system, the pressure oil of starting motor 11 injection pumps 10 outputs is connected with motor 2 with oil motor 4 by the hydraulic integrated control valve group, and motor 2 is connected with the wheel box of damping down sampling assemble or band wind sampling assemble.The gear of described wheel box is the interchangeable gear, realize respectively as required and get gas range finding plug 12 below be provided with tooth bar or on cover plate 3, be provided with the engagement of gear bar.
The utility model in actual use,
During the sampling of band wind, sampler makes sampler get gas range tube 17 wheel boxes, 24 sealing covers 16 and blast furnace under motor 4 drives and props up the blowpipe interface and connect, motor 2 drives are got gas range finding plug 12 Shens and are advanced in the blast furnace, gas and solid enter in the container 13 by pipeline valve under the drive of stove inner high voltage, take a sample successfully, sealing cover 16 adopts pressurized seal, guarantee that stove inner high voltage high-temperature gas does not flow out, reach safety in production, get tracheae and adopt the high pressure water-cooled, with stainless material be made, high temperature resistant, reach service requirements.
During the damping down sampling, sampler is on track 1, before chain 27, advance under the effect of chain seat 21 back chain seats 9, making sampler stopple coupon 23 transition conduit 22 wheel boxes 24 cover plates 3 motors 2 connect the Shen advances in the blast furnace, motor 2 is extracted cover plate 3 out from stopple coupon 23, furnace charge falls in the stopple coupon, and sampler withdraws from, and finishes the damping down sampling.Stopple coupon adopts the high pressure water-cooled, with stainless material be made, high temperature resistant, reach service requirements.
When circling round district's range finding, sampler makes sampler get gas range tube 17 sealing covers 16 and blast furnace under the drive of motor 4 and props up the blowpipe interface and connect, motor 2 inserts a blowpipe to range finding plug 12 by gear and tooth bar and arrives the district of circling round, when contacting in the stove mineral, range finding plug 12 terminations are obstructed, the oil pressure of motor 2 is raise, when pressure is elevated to setting, electrode points tensimeter 14 sends electrical signal, motor 2 is shut down, get the gas range finding plug 17 actual distances that enter in the stove like this and be exactly circle round offset from, thereby reach the range finding purpose.
But the utility model is a tractor serves several purposes also, at present, domestic blast furnace is not of uniform size, blast-furnace tuyere center absolute altitude is also different, this will ask for the adjustable of model machine sampling absolute altitude, as shown in the figure: center, air port absolute altitude governor lever 15 can make wheel box 24 and stopple coupon 23 whole up-down adjustment, and regulation range 300mm can satisfy big small furnace fully and use.Sampler power partly adopts integrated design, make that oil pressure power control system structure is very tight plays, the one design of wheel box 24 and oil motor 2 moves up and down freely stopple coupon 23, realizes that center, air port absolute altitude is adjustable, global design makes sampler very little, thereby can satisfy 1000m
3The following stove sampling of blast furnace (because of the bogey tuyere platform small-sized) (global design is: motor 11 oil pumps, 10 hydraulic reservoirs 8 and hydraulic integrated control valve group 7 are designed to one, and wherein oil pump 10 is installed in hydraulic reservoir 18 the insides, and one-piece construction is little a lot)
Embodiment one:
Chassis 5 is welded by steel construction, below by 4 iron tyre, sampler is moved on track 1.Chassis 5 and track 1, chain 27, back chain seat 9, preceding chain seat 21, and power chain and bearing 26, be connected: two tracks 1 are installed on the blast-furnace tuyere platform; Chain seat 21 back chain seats 9 before two on track is good and sound; Chain 27 and guide wheel 25, power chain and bearing 26 are linked and packed, and sampler seesaws sampler under the rotation of motor 4 in orbit like this.Hydraulic reservoir 8, injection pump 10, motor 11, hydraulic integrated control valve group 7, electrode points tensimeter 14, oil motor 4, connection.Electric motor 11 vertical being installed on the hydraulic reservoir 8, injection pump 10 is installed in the inside of hydraulic reservoir 8, can save the space, structure is tightly played (as figure), hydraulic integrated control valve group 7 is installed on the cover plate of hydraulic reservoir 8, electrode points tensimeter 14 is installed on the control valve group 7, motor 4 is installed on power chain and the bearing 26, with high-pressure line each parts is unified into hydraulic control system, the pressure oil of starting motor 11 injection pumps 10 outputs is controlled motor 4 and motor 2 by the hydraulic integrated control valve group, and motor 4 rotates sampler is moved in orbit.Hydraulic integrated control valve group 7 by: directional valve, flow valve, pressure valve, pressure relay, oil circuit integrated package are formed, control high-pressure oil pressure, flow and direction.Connect regulating pavilion 15 and wheel box 24 and chassis 5 columns, rotary regulating lever 15 just makes wheel box 24 move up and down between the column on chassis, reach adjusting center absolute altitude, transition conduit 22 and damping down stopple coupon 23 connect together in (as figure) and wheel box connects, cover plate 3 inserts from wheel box, be inserted into the damping down stopple coupon (builds the notch of damping down stopple coupon for 23 li always, cover plate is built when making stopple coupon in inserting stove), cover plate is under the drive of motor 2, the meshing cover plate that makes of the gear of wheel box and the tooth bar on the cover plate seesaws in stopple coupon: make stopple coupon 23 notch open and close, reach when sampling and can guarantee sampling article status requirement in stove, (promptly the position in stopple coupon is exactly position in the stove); The connection of getting gas range tube 17, sealing cover 16, getting gas range finding plug 12, container 13: when the sampling of band wind, wheel box 24 is replaced with band wind sampling wheel box, (the inside gear changing and axle), transition conduit 22 damping down stopple coupons 23 and cover plate 3 are unloaded, load onto get gas range tube 17 sealing covers 16 after, get in the gas range tube 17 getting gas range finding plug 12 insertion wheel boxes 24, connect container 13 and promptly finish band wind sampling installation; Band wind is found range: with a last the same operation, only need be transferred to required setting pressure to the electrode points tensimeter just, starting electrical equipment position limit switch has been controlled by the spacing control in position just sampler and each action; Sampler is made up of manual and automatic control, takes a sample at damping down and adopts manually control just, promptly as long as operated hydraulicdirectional control valve.When band wind sampling range finding, for safety, to realize automatic control, promptly use the position limit switch, replace manual manipulation just, form program control loop by position limit switch, the time relay, contactor etc. on the electrical equipment, reach the automatic control purpose, electric motor adopts the direct starting loop.Cooling system: the high pressure water of 1.6Mpa is connected to the cooling chamber that cover plate 3 damping down stopple coupons 23 are got gas range finding plug 12, backwater cavity is switched to the outside just, making cover plate 3 damping down stopple coupons 22 get the temperature control when work of gas range finding plug 12 makes them can satisfy the requirement of strength of sampling within the specific limits.Shown in the cooling chamber 18,19,20, each two chamber is arranged among each figure, one is intake antrum, and one is backwater cavity, and the intensification of workpiece is taken away by water, reaches cooling performance.Finish by hydrostatic transmission and automatic control, hydrostatic transmission partly by: (the stepped control sampler advances, retreats oil pump 10 motors 11 hydraulic integrated control valve groups 7, plug and cover plate advance, retreat, and adjustable-speed joint) oil pressure pressure relay control Hui Luo is arranged when range finding, so that reach accurate location, sampler can manually be controlled and control automatically, like this, make the sampling of band wind can guarantee operator safety, the damping down sampling is with the wind sampling with control and manual control combine automatically with manually control.Stopple coupon 23 is got gas range finding plug 12 cover plates 3 three-major-items will hold high temperature about 2000 ℃, adopts the stainless steel high temperature material to make, and makes their coolings guarantee that physical strength realizes sampling purpose by high pressure (1.6Mpa) hydraulic pressure.Sealing cover 16 adopts the high-pressure blast sealing when band wind sampling range finding, and stove inner high voltage gas is not outflowed, and reaches the safety in production purpose.Electrical control system adopts stepped control, that is: motor 11 starts, stops, motor 2, oil motor 4 positive and negative runnings, the control of sampler forward-reverse, the relay circuit and all places contact control loop of 14 controls of electrode points tensimeter make sampler realize manually control and control automatically
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (8)
1. tuyere sampler of blast furnace, it includes track, the chassis, back chain seat, preceding chain seat, frame, on frame, be provided with hydraulic control, sampling mechanism, chain-drive mechanism, frame is fixed on the chassis, slide and be located on the track in the chassis, it is characterized in that: described sampling mechanism has included damping down sampling assemble or band wind sampling assemble, described damping down sampling assemble includes wheel box, transition conduit, center, air port absolute altitude governor lever, cover plate, the damping down stopple coupon, on the chassis, be provided with column, wheel box through port center absolute altitude governor lever constitutes the formula of moving up and down with column and is connected, stopple coupon is connected with wheel box by transition conduit, on the cover board be provided with the gear bar, be provided with slot cover on stopple coupon, the toothing in cover plate and the wheel box is also inserted in the slot cover that is connected on the stopple coupon; Described band wind sampling assemble includes wheel box, gets the gas range tube, sealing cover, get gas range finding plug, container, sealing cover is installed in the gas-taking end of getting gas range finding plug, the other end of getting the gas range tube is connected with wheel box, below getting gas range finding plug, be provided with tooth bar, toothing in tooth bar and the wheel box, get gas range finding plug and insert wheel box and get in the gas range tube, container by valve with get the gas plug of finding range and be communicated with.
2. tuyere sampler of blast furnace according to claim 1, sealing cover is that high-pressure blast is tightly connected with getting the gas range tube when finding range to it is characterized in that taking a sample described band wind.
3. tuyere sampler of blast furnace according to claim 1, it is characterized in that described hydraulic control includes hydraulic reservoir, injection pump, motor, the hydraulic integrated control valve group, the electrode points tensimeter, oil motor, motor, electric motor is vertical to be installed on the hydraulic reservoir, injection pump is installed in the inside of hydraulic reservoir, the hydraulic integrated control valve group is installed on the cover plate of hydraulic reservoir, the electrode points tensimeter is installed on the control valve group, motor is installed on the power chain and bearing of chain wheel set, with high-pressure line each parts is unified into hydraulic control system, the pressure oil of starting motor injection pump output is connected with motor with oil motor by the hydraulic integrated control valve group, and motor is connected with the wheel box of damping down sampling assemble or band wind sampling assemble.
4. tuyere sampler of blast furnace according to claim 1 is characterized in that described cover plate is the cover plate of a band cavity, which is provided with two cavitys of intake antrum and backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
5. tuyere sampler of blast furnace according to claim 1, it is characterized in that described stopple coupon 23 is an arc clamp, its arc tube wall is one to be provided with the clamp wall of intake antrum and two cavitys of backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
6. tuyere sampler of blast furnace according to claim 1 is characterized in that described to get gas range finding plug be a circular clamp, and its circular tube wall is one to be provided with the clamp wall of intake antrum and backwater cavity, and intake antrum is communicated with the high pressure water source, and backwater cavity is in communication with the outside.
7. tuyere sampler of blast furnace according to claim 1 is characterized in that: described chassis is welded by steel construction, is provided with 4 iron tyre below, and 4 iron tyre are connected with track.
8. tuyere sampler of blast furnace according to claim 1 is characterized in that: the gear of described wheel box is the interchangeable gear, respectively with get gas range finding plug below be provided with tooth bar or on the cover board be provided with the engagement of gear bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070393 CN2890073Y (en) | 2006-03-20 | 2006-03-20 | Blast furnace tuyere sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070393 CN2890073Y (en) | 2006-03-20 | 2006-03-20 | Blast furnace tuyere sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2890073Y true CN2890073Y (en) | 2007-04-18 |
Family
ID=38020728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070393 Expired - Fee Related CN2890073Y (en) | 2006-03-20 | 2006-03-20 | Blast furnace tuyere sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2890073Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443667A (en) * | 2011-12-07 | 2012-05-09 | 首钢总公司 | Tuyere raceway sampling and measuring device |
| CN110926885A (en) * | 2019-05-31 | 2020-03-27 | 宗宁枫 | Blast furnace tuyere with air taking and delivering machine and taking and delivering method |
-
2006
- 2006-03-20 CN CN 200620070393 patent/CN2890073Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443667A (en) * | 2011-12-07 | 2012-05-09 | 首钢总公司 | Tuyere raceway sampling and measuring device |
| CN102443667B (en) * | 2011-12-07 | 2013-04-17 | 首钢总公司 | Tuyere raceway sampling and measuring device |
| CN110926885A (en) * | 2019-05-31 | 2020-03-27 | 宗宁枫 | Blast furnace tuyere with air taking and delivering machine and taking and delivering method |
| CN110926885B (en) * | 2019-05-31 | 2023-05-23 | 宗宁枫 | Blast furnace tuyere with wind taking and conveying machine and taking and conveying method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20150320 |
|
| EXPY | Termination of patent right or utility model |