CN202081115U - One-time uniform pressure relief valve device on bell-less top part of blast furnace - Google Patents
One-time uniform pressure relief valve device on bell-less top part of blast furnace Download PDFInfo
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- CN202081115U CN202081115U CN2011201735488U CN201120173548U CN202081115U CN 202081115 U CN202081115 U CN 202081115U CN 2011201735488 U CN2011201735488 U CN 2011201735488U CN 201120173548 U CN201120173548 U CN 201120173548U CN 202081115 U CN202081115 U CN 202081115U
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- valve
- blast furnace
- valve seat
- bell
- valve body
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Abstract
The utility model discloses a one-time uniform pressure relief valve device on a bell-less top part of a blast furnace. A main body comprises a valve body, a valve seat, a main bracket, a cylinder support, a transmission cylinder, a valve stem, a valve cover and a connecting flange. The valve seat is connected with the lower part of the valve body; the main bracket is connected with the upper part of the valve body; the cylinder support is arranged on the upper part of the main bracket; the transmission cylinder is arranged in the cylinder seat in a penetrating way and extends into the main bracket; the valve stem is connected with the lower end of the transmission cylinder and is arranged in the main bracket and the valve body; the valve cover is connected with the lower end of the valve stem and can be movably accommodated in the valve body and the valve seat; and the connecting flange is arranged on the lower part of the valve seat, and the periphery of the valve cover is provided with a sealing ring. The valve device has good sealing effect and erosion resistance, the sealing surface cannot easily fall off, and the service life of the valve device is long.
Description
Technical field
The utility model relate to a kind of blast furnace bell-less furnace roof all, the row pressure system, particularly relate to a kind of blast furnace bell-less furnace roof once all, the valve system in the row pressure system.
Background technology
According to the raising of blast furnace top pressure and utilization coefficient in recent years, combustion intensity constantly increases thereupon, domestic newly-built or transform old blast furnace all require to high production capacity, less energy-consumption, low delay ratio and cheaply direction develop.No matter the blast furnace of in the past having gone into operation is that no bell stove string pan furnace pushes up or also pan furnace pushes up, in order to make valve follow procedure smooth opening such as upper and lower seal valve, material flow gate, guarantee pack into smoothly batch can or from batch can, discharge of furnace charge, and guarantee that furnace top pressure does not fluctuate, on batch can, be provided with equal, row pressure system.In order to improve the reliability of pressure equalizing, large blast furnace does not have general employing of bell furnace top system all presses for twice, and once all piezodielectric adopts purified gas, and the equal piezodielectric of secondary is a nitrogen.Because the use of this valve is more special, when valve-off, require must contact tightly between valve gap and the valve seat, gas leak phenomenon must not be arranged.For prolonged its work-ing life as far as possible, need comparatively strict requirement be proposed to the sealing property of equalizing valve.
Yet though at present domestic existing a lot of producers have used this equal, purge valve device, result of use is very undesirable.Specifically be, except needs carry out built-up welding at valve seat and valve gap surface in contact, and complete processing is comparatively complicated, processing charges high beyond, its work-ing life is also very short.
Consult shown in Figure 1, for of the prior art be used for the blast furnace bell-less furnace roof once all, the valve system of row pressure system, the body 10 ' of described valve system includes: valve body 5 '; Valve seat 8 ' is connected the below of described valve body 5 '; Main support 3 ' is connected the top of described valve body 5 '; Cylinder support 2 ' is arranged on the top of described main support 3 '; Transmission oil cylinder 1 ' is located among the described cylinder support 2 ', and extends to the inside of described main support 3 '; Valve rod 4 ' is connected to the lower end of described transmission oil cylinder 1 ', and is positioned among described main support 3 ' and the valve body 5 '; Valve gap 6 ' is connected to the lower end of described valve rod 4 ', is contained in movably among described valve body 5 ' and the valve seat 8 '; Between valve gap and valve seat, also be provided with pile-up welding hard alloy welding rod 7 ' with sealing function.
Because what adopt between the valve seat of valve system of the prior art and the valve gap is hard sealing, promptly adopt the carbide electrode built-up welding at valve gap and valve seat touching position surface, carry out thick, precision work, grinding mating surface again, make it reach the purpose of sealing.And in actual use, because the carbide electrode of built-up welding and the carbon content of mother metal differ widely, so the deposition poor effect.Air-flow acutely wash away and when corrosion and opening-closing valve, impact between valve gap and the valve seat, vibrations and wearing and tearing, make the pile-up welding hard alloy welding rod 7 ' of built-up welding on valve gap and valve seat surface in contact produce wearing and tearing, local shedding phenomenon, cause the impaired inefficacy of sealing property equal, the purge valve device, can not reach the ideal sealing effectiveness, so the time just can not normally open upper sealing valve and lower seal valve, directly have influence on the works better of charging equipment.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of once equal purge valve door gear of blast furnace bell-less furnace roof, and its sealing effectiveness is better, anti-washing away, and enclosed watch surface layer difficult drop-off, and work-ing life is longer.
For achieving the above object, the utility model provides a kind of once equal purge valve door gear of blast furnace bell-less furnace roof, and the body of described valve system includes: valve body; Valve seat is connected the below of described valve body; Main support is connected the top of described valve body; Cylinder support is arranged on the top of described main support; The transmission oil cylinder is located among the described cylinder support, and extends to the inside of described main support; Valve rod is connected to the lower end of described transmission oil cylinder, and is positioned among described main support and the valve body; Valve gap is connected to the lower end of described valve rod, is contained in movably among described valve body and the valve seat; And joint flange, being arranged on the below of described valve seat, the periphery of described valve gap is provided with wear ring.
Further, the contact surface of described valve gap and valve seat is a surfacing Hardmetal materials contact surface.
Further, the periphery of described valve gap also is provided with groove, and described wear ring is embedded to described valve gap by described groove.
Further, described wear ring is high temperature resistant, attrition resistant ring of silicone rubber,sealing.
Further, the scope of the interior diameter of described valve seat is 300～600mm.
According to the utility model, be installed on the valve gap by using soft wear ring, and the Wimet spray welding technology is adopted on the surface of valve seat, thereby can realize the effect of double seal, reach the requirement of strict seal.And, when reaching good sealing effectiveness and keeping long work-ing life, also effectively simplified primary built-up welding weldprocedure, prevented overlay cladding wearing and tearing, local shedding, effectively saved production cost, reduced delay ratio.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.Wherein:
Fig. 1 is a valve system main body structure synoptic diagram in the prior art; And
Fig. 2 is a valve system main body structure synoptic diagram of the present utility model.
Embodiment
Below, by exemplary embodiment the utility model is specifically described.Yet should be appreciated that under the situation that is not having further narration element, structure and feature in embodiment also can be attached in other embodiment valuably.
When blast furnace during in ordinary production, according to the requirement of technology charging procedure, to carry out row pressure earlier and detect, row pressure is opened upper sealing valve after finishing, and opens baiting valve then and feeds to batch can; When batch can need carry out pressurising (all pressing) operation to batch can during blowing in stove,, all press and close equalizing valve after finishing to guarantee batch can and furnace pressure equilibrium.Open the lower seal valve and open material flow gate to the furnace throat cloth.Close throttling valve behind the intact material of cloth, close the lower seal valve, promptly finish the process of once feeding.Carry out identical loading operation program by this circulation successively subsequently.
In conjunction with shown in Figure 2, once equal purge valve door gear for blast furnace bell-less furnace roof of the present utility model, with valve system of the prior art be, described valve system also includes the body 10 with same structure and position relation similarly, and it includes: valve body 5; Be connected the valve seat 8 of the below of described valve body 5; Be connected the main support 3 of the top of described valve body 5; Be arranged on the cylinder support 2 of the top of described main bearing 3; Be located among the described cylinder support 2, and extend to the transmission oil cylinder 1 of the inside of described main support 3; Be connected to the lower end of described transmission oil cylinder 1, and be positioned at the valve rod 4 among described main support 3 and the valve body 5; Be connected to the lower end of described valve rod 4, be contained in the valve gap 6 among described valve body 5 and the valve seat 8 movably, and the joint flange 9 that is arranged on the below of described valve seat 8.Should be pointed out that with prior art in differently be, in order to prevent primary overlay cladding wearing and tearing, local shedding, and reach ideal sealing effectiveness and long work-ing life, the periphery of valve gap 6 of the present utility model also is provided with wear ring 7.Under the power wheel drive effect of transmission oil cylinder, valve rod can move downward or upward, moves downward or upward thereby promote valve gap, and wherein valve gap can descending lowermost end up to valve seat, thereby can close or open valve.
In order to realize preferable stopping property, can be to the contact surface employing spray welding technology of valve gap 6 with valve seat 8, and then replaced carbide electrode technique for overlaying of the prior art, thereby overcome of the prior art because air-flow acutely wash away and when corrosion and opening-closing valve, impact between valve gap and the valve seat, vibrations and wearing and tearing, the phenomenon of effectively having avoided the Wimet of built-up welding on valve gap and valve seat surface in contact to produce wearing and tearing and come off.Be preferably, described valve gap 6 is the surfacing Hardmetal materials with the contact surface of valve seat 8.As preferred embodiment, described wear ring 7 can be high temperature resistant, attrition resistant silicon rubber.
For being easy to realize that repair and maintenance is convenient and reliable, use cost is low, realizes easily and keeps good sealing effectiveness.Preferably, the periphery of described valve gap 6 also is provided with groove, and described wear ring 7 is embedded at described valve gap 6 by described groove.
Unobstructed in order to guarantee the inlet and outlet mouth, alternatively, the scope of the interior diameter of described valve seat 8 is 300～600mm, and concrete numerical value can be selected the valve seat bore that is complementary according to the physical size of valve body, and with the not isometric blast furnace use of coupling, thereby make that the working stability of valve system is reliable.
In sum, once equal purge valve door gear according to blast furnace bell-less furnace roof of the present utility model, by using soft wear ring 7 to be installed on the valve gap 6, and to the contact surface employing Wimet spray welding technology of valve gap 6 with valve seat 8, thereby can realize the effect of double seal, reach the requirement of strict seal.And, when reaching good sealing effectiveness and keeping long work-ing life, also effectively simplified original built-up welding weldprocedure, prevented that overlay cladding from coming off, effectively saved production cost, reduced delay ratio.
Be appreciated that the utility model is described by some embodiment, those skilled in the art know, under the situation that does not break away from spirit and scope of the present utility model, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present utility model, can make amendment to these features and embodiment can not break away from spirit and scope of the present utility model to adapt to concrete situation and material.Therefore, the utility model is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection domain of the present utility model.
Claims (5)
1. once equal purge valve door gear of a blast furnace bell-less furnace roof, the body of described valve system includes:
Valve body;
Valve seat is connected the below of described valve body;
Main support is connected the top of described valve body;
Cylinder support is arranged on the top of described main support;
The transmission oil cylinder is located among the described cylinder support, and extends to the inside of described main support;
Valve rod is connected to the lower end of described transmission oil cylinder, and is positioned among described main support and the valve body;
Valve gap is connected to the lower end of described valve rod, is contained in movably among described valve body and the valve seat; And
Joint flange is arranged on the below of described valve seat,
It is characterized in that,
The periphery of described valve gap is provided with wear ring.
2. the once equal purge valve door gear of blast furnace bell-less furnace roof as claimed in claim 1 is characterized in that the contact surface of described valve gap and valve seat is a surfacing Hardmetal materials contact surface.
3. the once equal purge valve door gear of blast furnace bell-less furnace roof as claimed in claim 1 is characterized in that the periphery of described valve gap also is provided with groove, and described wear ring is embedded to described valve gap by described groove.
4. the once equal purge valve door gear of blast furnace bell-less furnace roof as claimed in claim 1 is characterized in that described wear ring is high temperature resistant, attrition resistant ring of silicone rubber,sealing.
5. the once equal purge valve door gear of blast furnace bell-less furnace roof as claimed in claim 1 is characterized in that the scope of the interior diameter of described valve seat is 300～600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201735488U CN202081115U (en) | 2011-05-23 | 2011-05-23 | One-time uniform pressure relief valve device on bell-less top part of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201735488U CN202081115U (en) | 2011-05-23 | 2011-05-23 | One-time uniform pressure relief valve device on bell-less top part of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081115U true CN202081115U (en) | 2011-12-21 |
Family
ID=45341755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201735488U Expired - Fee Related CN202081115U (en) | 2011-05-23 | 2011-05-23 | One-time uniform pressure relief valve device on bell-less top part of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081115U (en) |
-
2011
- 2011-05-23 CN CN2011201735488U patent/CN202081115U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20170523 |