CN206754022U - A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation - Google Patents
A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation Download PDFInfo
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- CN206754022U CN206754022U CN201720416435.3U CN201720416435U CN206754022U CN 206754022 U CN206754022 U CN 206754022U CN 201720416435 U CN201720416435 U CN 201720416435U CN 206754022 U CN206754022 U CN 206754022U
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- oil
- hydraulic
- valve
- hydraulic cylinder
- petrol tank
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Abstract
Technical field of metallurgical machinery is the utility model is related to, more particularly to a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation.Including high-pressure oil pump, main fuel tank, hydraulic valve platform and hydraulic cylinder, the oil inlet of the hydraulic valve platform connects with high-pressure oil pump, and the oil-out of the hydraulic valve platform connects with hydraulic cylinder, it is characterised in that：Also include top petrol tank, the top petrol tank is connected by the oil return opening of the first oil return pipe and hydraulic valve platform, and first the oil-out of oil return pipe be immersed under the hydraulic oil pasta of top petrol tank, the top petrol tank by with hydraulic valve platform, hydraulic cylinder formed difference in height be hydraulic valve platform, hydraulic cylinder back pressure is provided, the top petrol tank is connected by the second oil return pipe with main fuel tank.The beneficial effects of the utility model are：Stable back pressure is provided for hydraulic valve platform and hydraulic cylinder by top petrol tank so that hydraulic valve platform, hydraulic cylinder and each oil pipe are full of hydraulic oil, are advantageous to device and quickly, smoothly run, and energy consumption is low.
Description
Technical field
Technical field of metallurgical machinery is the utility model is related to, discharging valve for top of blast furnace liquid is prevented more particularly to one kind
The device of cylinder pressure and pipeline evacuation.
Background technology
Discharging valve for top of blast furnace is the key equipment concerning blast furnace safety, is only pressed when the top pressure of blast furnace exceedes safety
During power, stock gas diffusion valve can just automatically open up under program, discharge high pressure gas.Stock gas diffusion valve is long-term not
Action, once but its action, it is ensuring that last one of measure of top pressure safety.
Existing blast furnace in metallurgical industry stock gas diffusion valve is all hydraulic-driven, mainly by fuel tank, high-pressure oil pump, hydraulic pressure
Valve platform, the hydraulic cylinder on stock gas diffusion valve and the composition of the connecting pipeline between each equipment.Fuel tank and high-pressure oil pump composition
Pumping plant high pressure fuel source is provided, oil sources controls the flow of hydraulic oil by hydraulic valve platform and entered, oil return direction, then by being connected to
The oil-piping of hydraulic cylinder, control the flexible of hydraulic jack so that stock gas diffusion valve opened in the presence of hydraulic jack or
Close.Usual hydraulic cylinder station and hydraulic valve platform are arranged on 30~40 meters high of furnace roof large platform, stock gas diffusion valve and its
Hydraulic cylinder device is arranged on 70~100 meters high of discharging valve for top of blast furnace platform.Due between hydraulic cylinder and fuel tank
The discrepancy in elevation is too big, to prevent the fluid in hydraulic cylinder and oil-piping from being emptied in the presence of deadweight, it usually needs in hydraulic valve platform or
Install the check valve or overflow valve of high back pressure on the oil returning tube of fuel tank additional.But generally, stock gas diffusion valve is long-term
It can equally be leaked after check valve or overflow valve long-time in high back pressure on non-action state, oil returning tube, so that
Full of air or vacuum is formed in hydraulic cylinder, oil-piping, it is necessary to first fill up when causing the stock gas diffusion valve requirement to act immediately
Oil-piping and cylinder chamber, hydraulic cylinder can not be driven immediately, and because oil return side is without back pressure, oil cylinder, which is quickly opened, after driving to damage
Bad diffusion valve mechanical structure, no matter which kind of situation, may cause the accident.
To solve problem above, existing metallurgy industry also has some other solution, such as shown in Fig. 1, in hydraulic pressure
Low pressure fuel pump 21 is connected on valve platform or tank drainback pipe oil sources is provided, prevented to the scheme of the long-term repairing in the inside of oil returning tube 19
The emptying of hydraulic oil in hydraulic cylinder, oil pipe.But such scheme is complicated, energy consumption is big, can not avoid low pressure fuel pump 21 and the back of the body
Pressure valve 20 damages the situation for causing failure of apparatus, debugs the bad normal oil return that can also affect on hydraulic cylinder.In a word, current smelting
Golden industry also lacks a kind of to the effective solution of problem above.
Utility model content
In view of the above the shortcomings that prior art, the purpose of this utility model is that providing one kind prevents State of Blast Furnace top coal
The device of gas diffusion valve hydraulic cylinder and pipeline evacuation, easily arranged for solving the hydraulic oil in hydraulic cylinder and pipeline in the prior art
The problems such as sky, back pressure stability are poor, high energy consumption.
In order to achieve the above objects and other related objects, the utility model, which provides one kind, prevents discharging valve for top of blast furnace
The device of hydraulic cylinder and pipeline evacuation, including high-pressure oil pump, main fuel tank, hydraulic valve platform and hydraulic cylinder, the hydraulic valve platform enter
Hydraulic fluid port connects with high-pressure oil pump, and the oil-out of the hydraulic valve platform connects with hydraulic cylinder, it is characterised in that：Also include high-order oil
Case, the top petrol tank are connected by the oil return opening of the first oil return pipe and hydraulic valve platform, and the oil-out submergence of the first oil return pipe
Under the hydraulic oil pasta of top petrol tank, the top petrol tank is hydraulic pressure by the difference in height formed with hydraulic valve platform, hydraulic cylinder
Valve platform, hydraulic cylinder provide back pressure, and the top petrol tank is connected by the second oil return pipe with main fuel tank.
The beneficial effects of the utility model are：The stable back of the body is provided for hydraulic valve platform and hydraulic cylinder by top petrol tank
Pressure so that hydraulic valve platform, hydraulic cylinder and each oil pipe are full of hydraulic oil, are advantageous to device and quickly, smoothly run, and energy consumption
It is low.
Further, the setting height of the top petrol tank forms back pressure, avoided greater than or equal to the setting height of hydraulic cylinder
Hydraulic oil emptying in hydraulic cylinder cavity.
Further, the oil-out of first oil return pipe is less than the oil inlet of second oil return pipe.
Further, the oil-out of first oil return pipe is stretched into by the top in top petrol tank, side or bottom.
Further, the top petrol tank, which is provided with, is used for the liquid level of hydraulic oil and the liquid level liquid thermometer of temperature in inspection box.
Further, the top petrol tank is provided with air cleaner.
Further, the top petrol tank is provided with liquid-level switch.
Further, the bottom of the top petrol tank is provided with blowoff valve.
Further, the hydraulic valve platform includes electro-hydraulic reversing valve, and the electro-hydraulic reversing valve passes through the first oil pipe and the second oil
Pipe is connected with high-pressure oil pump and the first oil return pipe respectively, is provided with oil-feed high-pressure ball valve on first oil pipe and oil-feed is unidirectional
Valve, return check valve is installed on second oil pipe.
Further, the electro-hydraulic reversing valve by the 3rd oil pipe and the 4th oil pipe respectively with the rodless cavity of hydraulic cylinder and having bar
Chamber is connected, and one-way throttle valve and high-pressure ball valve are equipped with the 3rd oil pipe and the 4th oil pipe.
It is using the above-mentioned further beneficial effect of scheme：
(1) return oil pressure at hydraulic valve platform is formed by the installation site of top petrol tank and the difference in height of hydraulic valve platform,
As long as difference in height is present, return oil pressure just can be stabilized, and reduce the factor of return oil pressure failure；
(2) size of return oil pressure is determined by the height of top petrol tank, and back pressure value stability is high, and reduction influences back
The factor of oily back pressure；
(3) after the completion of top petrol tank, hydraulic cylinder, hydraulic valve platform connection, deposited in first operation into the first return line
After full hydraulic oil, return oil pressure is just persistently present, and without continuing to be passed through hydraulic oil into pipeline, reduces energy consumption, cost-effective.
Brief description of the drawings
Fig. 1 is shown as the schematic diagram of discharging valve for top of blast furnace hydraulic drive circuit in the prior art；
Fig. 2 is shown as structural representation of the oil return pipe of the utility model first by entrance at the top of top petrol tank；
Fig. 3 is shown as the structural representation that the oil return pipe of the utility model first is entered by top petrol tank side.
Piece mark explanation
1 high-pressure oil pump；
2 main fuel tanks；
3 hydraulic valve platforms；
31 oil inlets；
32 oil return openings；
33 oil-outs；
34 oil-outs；
35 electro-hydraulic reversing valves；
4 first oil pipes；
41 oil-feed high-pressure ball valves；
42 in line check valves；
5 second oil pipes；
51 return check valves；
6 top petrol tanks；
61 liquid level liquid thermometers；
62 air cleaners；
63 liquid-level switches；
64 blowoff valves；
7 the 3rd oil pipes；
71 one-way throttle valves；
72 high-pressure ball valves；
8 the 4th oil pipes；
81 one-way throttle valves；
82 high-pressure ball valves；
9 hydraulic cylinders；
91 rodless cavities；
92 rod chambers；
10 first oil return pipes；
11 second oil return pipes；
12 diffusion valve platforms；
Embodiment
Illustrate embodiment of the present utility model below by way of specific instantiation, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages and effect of the present utility model easily.The utility model can also be by addition
Different embodiments are embodied or practiced, and the various details in this specification can also be based on different viewpoints with answering
With, without departing from it is of the present utility model spirit under carry out various modifications or alterations.
It is it should be noted that cited such as " on ", " under ", "left", "right", " centre " and " one " etc. in this specification
Term, understanding for narration is merely convenient to, and is not used to limit the enforceable scope of the utility model, the change of its relativeness
Or adjustment, in the case where changing technology contents without essence, when being also considered as the enforceable category of the utility model.
Before the utility model embodiment is described in detail, first application environment of the present utility model is retouched
State.Difference in height of the technology of the present utility model mainly applied to hydraulic cylinder and hydraulic valve platform, hydraulic oil pump, main fuel tank is larger,
Oil return side needs the system for providing high back pressure, is especially applicable to discharging valve for top of blast furnace hydraulic control system.This practicality
It is new be solve hydraulic cylinder in traditional discharging valve for top of blast furnace hydraulic control system, the hydraulic oil in oil pipe easily empties,
Stock gas diffusion valve can not drive operation immediately, and oil return side is quickly opened without back pressure, hydraulic cylinder and is easily damaged the skills such as diffusion valve
Art problem.
As shown in Fig. 2 the device of the present utility model for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation, bag
High-pressure oil pump 1, main fuel tank 2, hydraulic valve platform 3 and hydraulic cylinder 9 are included, hydraulic valve platform 3 is located at the lower section of hydraulic cylinder 9.Hydraulic valve platform 3
Oil inlet 31 is connected with high-pressure oil pump 1 by pipeline, and the oil-out 33 of hydraulic valve platform 3 passes through pipeline and the rodless cavity of hydraulic cylinder 9
91 connections, oil-out 34 are connected by pipeline with the rod chamber 92 of hydraulic cylinder 9, and the piston rod and stock gas of hydraulic cylinder 9 diffuse
Valve connects, and piston rod is flexible to promote stock gas diffusion valve to open or close.Wherein, hydraulic valve platform 3 includes electro-hydraulic reversing valve 35,
The P mouths of electro-hydraulic reversing valve 35 are connected by the first oil pipe 4 with high-pressure oil pump 1, and oil-feed high-pressure ball valve 41 is provided with the first oil pipe 4
With in line check valve 42, oil inlet 31 is on the pipeline between oil-feed high-pressure ball valve 41 and high-pressure oil pump 1；Electro-hydraulic reversing valve 35
T mouths be connected by the second oil pipe 5 with the first oil return pipe 10, return check valve 51 is installed on the second oil pipe 5；Electro-hydraulic reversing valve
35 A mouths are connected by the 3rd oil pipe 7 with the rodless cavity 91 of hydraulic cylinder 9, and the 3rd oil pipe 7 is provided with one-way throttle valve 71 and high pressure
Ball valve 72；The B mouths of electro-hydraulic reversing valve 35 are connected by the 4th oil pipe 8 with the rod chamber 92 of hydraulic cylinder 9, and the 4th oil pipe 8 is provided with
One-way throttle valve 81 and high-pressure ball valve 82.
As shown in Fig. 2 the device also includes top petrol tank 6, top petrol tank 6 may be mounted on diffusion valve platform 12, high
Position fuel tank 6 is connected by the first oil return pipe 10 with the oil return opening 32 of hydraulic valve platform 3, and the oil-out of the first oil return pipe 10 is immersed in
Under the hydraulic oil pasta of top petrol tank 6, avoid air enter the first oil return pipe 10 in, the setting of top petrol tank 6 be highly equal to or
Higher than the setting height of hydraulic cylinder 9, top petrol tank 6 is hydraulic valve platform by the difference in height formed with hydraulic valve platform 3, hydraulic cylinder 9
3rd, hydraulic cylinder 9 provides back pressure, as long as the hydraulic pressure pasta in the first oil return pipe 10 is greater than or equal to the height of hydraulic cylinder 9, passes through height
Degree official post obtains the pressure balance of hydraulic oil, avoids the hydraulic oil in the first oil return pipe 10, hydraulic cylinder 9, the pipeline of hydraulic valve platform 3 from arranging
It is empty, there is provided stable back pressure.Top petrol tank 6 is connected by the second oil return pipe 11 with main fuel tank 2, and the oil return in main fuel tank 2 can
Recycled with being transported to by high-pressure oil pump 1 in device.The fuel-displaced open height that first oil return pipe 10 is stretched into top petrol tank 6 is low
In the oil-feed open height that the second oil return pipe 11 is stretched into top petrol tank 6, the oil-out of the first oil return pipe 10 is immersed in top petrol tank 6
Under middle hydraulic oil liquid level, it be will pass through when the hydraulic pressure in top petrol tank 6 reaches certain altitude (during higher than the second oil return pipe 11)
Second oil return pipe 11 is transported in main fuel tank 2, avoids air inlet in the first oil return pipe 10 by the structure, while be advantageous to height
Hydraulic oil in the fuel tank 6 of position keeps suitable liquid level.As shown in Fig. 2 top of the oil-out of the first oil return pipe 10 by top petrol tank 6
Portion stretches into；As shown in figure 3, the oil-out of the first oil return pipe 10 is stretched into by the side of top petrol tank 6；First oil return pipe 10 it is fuel-displaced
Mouth can also be stretched into by the bottom of top petrol tank 6；In the utility model, the first oil return pipe 10 is preferably used by top petrol tank 6
Side stretch into, be advantageous to oil-out and be directly immersed in hydraulic oil, and be advantageous to the hydraulic pressure at the oil-out end of the first oil return pipe 10
Oil is stable to be rested in the first oil return pipe 10.
In the utility model, by setting top petrol tank 6 to provide back pressure for hydraulic valve platform 3, hydraulic cylinder 9, it can pass through
Hydraulic oil is directly injected into top petrol tank 6, hydraulic oil just can be caused to be rapidly filled with the first oil return pipe 10, improves and runs for the first time
The efficiency of preparation.If directly forming difference in height with hydraulic cylinder 9 by the first oil return pipe 10, then directly pass through the second oil pipe
11 are connected oil return with the oil-out of the first oil return pipe 10, and are not provided with top petrol tank 6, then when running for the first time, only pass through
Electro-hydraulic reversing valve 35 does not stop the oil return that commutates, and the hydraulic oil that high-pressure oil pump 1 provides is injected to whole device, can just be filled first time
Oil pipe 10 so that whole oil circuit is stable.Pipeline air exhaust water etc. is inconvenient for operation, and blind pipe can not also overhaul observation.
As shown in Fig. 2 top petrol tank 6, which is provided with, is used for the liquid level of hydraulic oil and the liquid level liquid thermometer of temperature in inspection box
61, the liquid level and liquid temperature in top petrol tank 6 are observed by liquid level liquid thermometer 61, are easy to straightforward observation, improves monitoring energy
Power；Top petrol tank 6 is provided with air cleaner 62, passes through the air pressure in the top petrol tank 6 of air cleaner 62 and extraneous gas
Pressure reaches a poised state；Top petrol tank 6 is provided with liquid-level switch 63, is detected by liquid-level switch 63 in top petrol tank 6
Liquid level, and be connected with the control system in the external world, by the feedback of the information of detection to control system；The bottom of top petrol tank 6 is provided with row
Dirty valve 64, the discarded object in top petrol tank 6 is discharged by blowoff valve 64, is needing to enter top petrol tank 6 or each parts
During row maintenance, the hydraulic oil in top petrol tank 6 is drained by blowoff valve 64, is easy to repair.
Its course of work is：When the piston rod of hydraulic cylinder 9 needs to stretch out motion drive discharging valve for top of blast furnace opening
When, the electromagnet b of the electro-hydraulic reversing valve 35 of hydraulic valve platform 3 obtains electric, and electro-hydraulic reversing valve 35 commutates to right side working position, high-pressure oil pump
1 hydraulic oil provided enters hydraulic valve platform 3 by pipeline by oil inlet 31, then in turn through oil-feed high-pressure ball valve 41, oil-feed
Check valve 42, the hydraulic fluid port P-A of electro-hydraulic reversing valve 35, one-way throttle valve 71, high-pressure ball valve 72, oil-out 33 enter hydraulic cylinder 9
Rodless cavity 91, hydraulic oil promote piston rod to stretch out, and the hydraulic oil in rodless cavity 91 is along pipeline successively by oil-out 34, high pressure
Enter the first oil return after ball valve 82, one-way throttle valve 81, the hydraulic fluid port B-T of electro-hydraulic reversing valve 35, return check valve 51, oil-out 32
Pipe 10, it is flowed into by the first oil return pipe 10 in top petrol tank 6, the oil-out of the first oil return pipe 10 is immersed in top petrol tank 6
Hydraulic oil liquid level under, stock gas diffusion valve completely open after, the electromagnet b of electro-hydraulic reversing valve 35 is always maintained at electric, stove
Top gas bleeding valve is then always maintained at open mode.When the piston rod of hydraulic cylinder 9 needs retraction movement to drive top gas
When diffusion valve is closed, the electromagnet a of the electro-hydraulic reversing valve 35 of hydraulic valve platform 3 obtains electric, and electro-hydraulic reversing valve 35 changes to left side working position,
High-pressure oil pump 1 provide hydraulic oil by pipeline by oil inlet 31 enter hydraulic valve platform 3, then in turn through then in turn through
Oil-feed high-pressure ball valve 41, in line check valve 42, the hydraulic fluid port P-B of electro-hydraulic reversing valve 35, one-way throttle valve 81, high-pressure ball valve 82, go out
Hydraulic fluid port 34 enters the rod chamber 92 of hydraulic cylinder 9, and hydraulic oil promotes piston rod to retract, the hydraulic oil in rod chamber 92 along pipeline according to
It is secondary by oil-out 33, high-pressure ball valve 72, one-way throttle valve 71, the hydraulic fluid port A-T of electro-hydraulic reversing valve 35, return check valve 51, go out
Enter the first oil return pipe 10 after hydraulic fluid port 32, be flowed into by the first oil return pipe 10 in top petrol tank 6, the first oil return pipe 10 it is fuel-displaced
Mouth is immersed under the hydraulic oil liquid level in top petrol tank 6, after stock gas diffusion valve completely closes, the electromagnetism of electro-hydraulic reversing valve 35
Iron b dead electricity, electro-hydraulic reversing valve 35 return to middle position, and stock gas diffusion valve is then always maintained at closing shape in the presence of mechanical stage clip
State.
The setting of top petrol tank 6 is highly higher than hydraulic valve platform 3 by the utility model, the back pressure at hydraulic valve platform 3 be by
What the difference in height of the first oil return pipe 10 and hydraulic valve platform 3 was formed, reduce other disturbing factors, and the size of back pressure is also logical
Difference in height decision is crossed, back pressure is stable.Setting height of the setting height of top petrol tank 6 greater than or equal to hydraulic cylinder 9 so that hydraulic pressure
The hydraulic oil in hydraulic oil and the first oil return pipe 10 between the rodless cavity 91 of cylinder 9, rod chamber 92 and pipeline is dead-weight balanced, prevents
In hydraulic cylinder, each pipeline hydraulic oil emptying, when first time run before to the 3rd oil pipe, the 4th oil pipe, hydraulic cylinder, first time
After being full of hydraulic oil in oil pipe line, as long as the difference in height between the oil-out of the first oil return pipe 10 and hydraulic cylinder 9 keeps constant, then
The back pressure of formation, which just can be stablized, to be persistently present, and is reduced the factor for influenceing the stable operation of hydraulic cylinder 9, is avoided hydraulic pressure in each pipeline
Oil emptying, air inlet, improve the stability and reliability of discharging valve for top of blast furnace operation.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art can all be carried out without prejudice under spirit and scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by claim of the present utility model.
Claims (10)
1. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation, including high-pressure oil pump, main fuel tank, liquid
Pressure valve platform and hydraulic cylinder, the oil inlet of the hydraulic valve platform connect with high-pressure oil pump, the oil-out and hydraulic pressure of the hydraulic valve platform
Cylinder connects, it is characterised in that：Also include top petrol tank, the top petrol tank passes through the first oil return pipe and the oil return opening of hydraulic valve platform
Connection, and the oil-out of the first oil return pipe is immersed under the hydraulic oil pasta of top petrol tank, the top petrol tank by with hydraulic pressure
The difference in height that valve platform, hydraulic cylinder are formed be hydraulic valve platform, hydraulic cylinder provides back pressure, the top petrol tank by the second oil return pipe and
Main fuel tank connects.
2. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：Setting height of the setting height of the top petrol tank greater than or equal to hydraulic cylinder.
3. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The oil-out of first oil return pipe is less than the oil inlet of second oil return pipe.
4. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The oil-out of first oil return pipe is stretched into by the top in top petrol tank, side or bottom.
5. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The top petrol tank, which is provided with, is used for the liquid level of hydraulic oil and the liquid level liquid thermometer of temperature in inspection box.
6. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The top petrol tank is provided with air cleaner.
7. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The top petrol tank is provided with liquid-level switch.
8. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The bottom of the top petrol tank is provided with blowoff valve.
9. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 1, its
It is characterised by：The hydraulic valve platform includes electro-hydraulic reversing valve, and the electro-hydraulic reversing valve is distinguished by the first oil pipe and the second oil pipe
It is connected with high-pressure oil pump and the first oil return pipe, oil-feed high-pressure ball valve and in line check valve is installed on first oil pipe, it is described
Return check valve is installed on second oil pipe.
10. a kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation according to claim 9, its
It is characterised by：The electro-hydraulic reversing valve is connected by the rodless cavity and rod chamber of the 3rd oil pipe and the 4th oil pipe respectively with hydraulic cylinder
Connect, one-way throttle valve and high-pressure ball valve are equipped with the 3rd oil pipe and the 4th oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720416435.3U CN206754022U (en) | 2017-04-19 | 2017-04-19 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720416435.3U CN206754022U (en) | 2017-04-19 | 2017-04-19 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206754022U true CN206754022U (en) | 2017-12-15 |
Family
ID=60614459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720416435.3U Withdrawn - After Issue CN206754022U (en) | 2017-04-19 | 2017-04-19 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206754022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917782A (en) * | 2017-04-19 | 2017-07-04 | 中冶赛迪工程技术股份有限公司 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
-
2017
- 2017-04-19 CN CN201720416435.3U patent/CN206754022U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917782A (en) * | 2017-04-19 | 2017-07-04 | 中冶赛迪工程技术股份有限公司 | A kind of device for preventing discharging valve for top of blast furnace hydraulic cylinder and pipeline evacuation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171215 Effective date of abandoning: 20181116 |
|
| AV01 | Patent right actively abandoned |