CN101538624B - Piston assembly of blast furnace gun - Google Patents
Piston assembly of blast furnace gun Download PDFInfo
- Publication number
- CN101538624B CN101538624B CN2009101037021A CN200910103702A CN101538624B CN 101538624 B CN101538624 B CN 101538624B CN 2009101037021 A CN2009101037021 A CN 2009101037021A CN 200910103702 A CN200910103702 A CN 200910103702A CN 101538624 B CN101538624 B CN 101538624B
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- piston
- piston ring
- ring
- blast furnace
- opening
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a piston assembly of a blast furnace gun, which comprises a driving rod and a piston body, and also comprises at least one integral piston ring and at least one open piston ring; the front end of the piston body is provided with a ring-shaped grooving which leads the front end of the piston body to form a suspended deck structure, the integral piston ring and the open piston ring are sequentially sheathed around the circumference of the suspended deck structure from front to back, a pressure plate which is fixed at the front end of the piston body is pressed in the ring-shaped grooving, and the outer diameter of the integral piston ring and the outer diameter of the open piston ring are larger than the diameter of the piston. The invention adopts the integral piston ring for reinforcement in front of the joint piston ring, thus being capable of bearing stronger reacting force of gun mud, and conducts axial seal by the joint piston ring; as the contact surface is reduced, the requirement of installation coaxiality on the piston and a mud pot is not high, and the friction force and friction area are reduced, thereby reducing the abrasion of the mud gun pistonand the mud pot, prolonging the service cycle of the mud gun piston and the mud pot, saving labor and materials, reducing maintenance and use costs, and being beneficial to maintaining normal production of the blast furnace gun.
Description
Technical field
The present invention relates to a kind of blast furnace gun, particularly a kind of piston assembly of blast furnace gun.
Background technology
Hydraulic clay gun belongs to the casthouse equipment of smelting industry indispensability, its effect is that the molten iron in stove is put when clean, can accurately stop up the iron notch of putting behind the iron rapidly, make blast furnace enter next round-robin operation fast, than mechanical clay gun, that Hydraulic clay gun has is in light weight, simple in structure, operate steadily, stable and reliable for performance, efficient is high, easy to operate, lower-price characteristic, is the comparatively ideal casthouse equipment of large, medium and small ironmaking producer.Hydraulic clay gun is by changeing big gun mechanism, pressing big gun mechanism, clay extruded mechanism, Hydraulic Station and operator's console etc. partly to form, and the mud cylinder of clay extruded mechanism and piston are the requisite parts of Hydraulic clay gun, finishes by pistons reciprocating in the mud cylinder and plays the mud action.
In the prior art, the piston complement of clay gun comprises driving stem and piston body, because the medium of piston body correspondence is a stemming, has bigger reactive force when moving during compression, be different from gas piston, thereby the clay gun piston generally adopts one-piece construction.
Since adopt whole piston structure, high for installation right alignment requirement between piston and the mud cylinder, if right alignment can not guarantee enough precision, can occur rubbing partially, cause the wearing and tearing of piston and mud cylinder, the mud phenomenon can appear leaking, change mud cylinder and piston.Owing to above reason, the piston and the mud cylinder life cycle of existing Hydraulic clay gun are shorter, change comparatively frequently, and wasting manpower and material resources not only also influences the ordinary production of blast furnace.
If adopt existing compressor and steam cylinder piston that the structure of piston ring is set, can't guarantee friction pair intensity, because the big shear force of stemming when beating mud makes piston ring breakage or distortion;
Therefore, need transform existing clay gun piston complement, can bear the big reactive force of stemming, the life cycle that prolongs the bod and mud cylinder is saved and is safeguarded and use cost, is beneficial to the ordinary production of keeping blast furnace.
Summary of the invention
In view of this, the invention provides a kind of piston assembly of blast furnace gun, can bear the big reactive force of stemming, the life cycle that prolongs the bod and mud cylinder is saved and is safeguarded and use cost, is beneficial to the ordinary production of keeping blast furnace.
Piston assembly of blast furnace gun of the present invention, comprise driving stem and piston body, also comprise at least one single-piece piston ring and at least one opening piston ring, described piston body front end has annular grooving, the annular grooving makes the piston body front end form the heavy stand structure, single-piece piston ring and opening piston ring are enclosed within the cylindrical of heavy stand structure from front to back successively, are pressed in the annular grooving by the pressing plate that is fixedly installed on the piston body front end, and described single-piece piston ring and opening piston ring external diameter are greater than piston diameter.
Further, described opening piston ring and single-piece piston ring are respectively one;
Further, the groove of described annular grooving is along the 15 ° of angles that recede, opening piston ring and the side that the groove edge of annular grooving is leaned on the mutually 15 ° of angles that recede;
Further, the opening of described opening piston ring is axial tapered cut;
Further, described single-piece piston ring is that cast iron is made, and the opening piston ring is made by nylon material;
Further, described pressing plate is embedded in the piston body front end, and fixedly installs by the single ended bolt that is spun on the piston body front end, and described single ended bolt is along the circumferential direction uniform more than four.
Beneficial effect of the present invention: piston assembly of blast furnace gun of the present invention, the single-piece piston ring of the preposition reinforcement of gap piston ring is split in employing, can bear the big reactive force of stemming, and carry out shoulder seal by the opening piston ring, because contact surface reduces, thereby it is less demanding to the installation right alignment of piston and mud cylinder, and reduce friction and friction area, thereby alleviate the wearing and tearing of clay gun piston and mud cylinder, prolong the life cycle of the bod and mud cylinder, use manpower and material resources sparingly, reduce and safeguard and use cost, be beneficial to the ordinary production of keeping blast furnace.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the axial sectional view of opening piston ring.
Embodiment
Fig. 1 is a structural representation of the present invention, Fig. 2 is the axial sectional view of opening piston ring, as shown in the figure: the piston assembly of blast furnace gun of present embodiment, comprise driving stem 2 and piston body 1, also comprise a single-piece piston ring 3 and an opening piston ring 4, described piston body 1 front end has annular grooving, the annular grooving makes piston body 1 front end form heavy stand structure 11, single-piece piston ring 3 and opening piston ring 4 are enclosed within the cylindrical of heavy stand structure 11 from front to back successively, be pressed in the annular grooving by the pressing plate 5 that is fixedly installed on the piston body front end, described single-piece piston ring 3 and opening piston ring 4 external diameters are greater than piston body 1 diameter, bear the big shearing force of stemming by single-piece piston ring 3, opening piston ring 4 plays the shoulder seal effect, adopts opening piston ring 4 and single-piece piston ring 3 each structure of one, is beneficial to the matching relationship that guarantees piston ring; Certainly, opening piston ring 4 and single-piece piston ring 3 also can both be realized goal of the invention for a plurality of;
In the present embodiment, the groove of annular grooving is along receding 15 ° of angles, opening piston ring and the groove of the annular grooving 15 ° of angles that recede along 12 sides of leaning on mutually, after opening piston ring 4 is installed and is worn and torn, by the effect of single-piece piston ring 3 to the radial component of its axial force that applies, can compensate outside distending, reach the purpose of sealing, be beneficial to the work-ing life that prolongs piston ring;
In the present embodiment, the opening of opening piston ring 4 is axial tapered cut, is beneficial to the axial flow that stops stemming, further reaches excellent sealing;
In the present embodiment, described single-piece piston ring 3 is made for cast iron, and wear resistance is good, and the intensity height can bear big shearing force; Opening piston ring 4 is made by nylon material, and elasticity and wear resistance are good, and intensity is higher, is applicable to the medium that density is bigger;
In the present embodiment, described pressing plate 5 is embedded in piston body 1 front end, guarantees that piston body 1 front end is concordant, does not influence the working efficiency of beating mud; Pressing plate 5 also fixedly installs by the single ended bolt 6 that is spun on piston body 1 front end, described single ended bolt 6 be 12 along the circumferential direction uniform, can certainly be other quantity, can both reach goal of the invention, simple in structure, convenient disassembly.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. piston assembly of blast furnace gun, comprise driving stem and piston body, it is characterized in that: also comprise at least one single-piece piston ring and at least one opening piston ring, described piston body front end has annular grooving, the annular grooving makes the piston body front end form the heavy stand structure, single-piece piston ring and opening piston ring are enclosed within the cylindrical of heavy stand structure from front to back successively, be pressed in the annular grooving by the pressing plate that is fixedly installed on the piston body front end, described single-piece piston ring and opening piston ring external diameter are greater than piston diameter; The groove of described annular grooving is along receding 15 ° of angles, opening piston ring and the side that the groove edge of annular grooving is leaned on the mutually 15 ° of angles that recede.
2. piston assembly of blast furnace gun according to claim 1 is characterized in that: described opening piston ring and single-piece piston ring are respectively one.
3. piston assembly of blast furnace gun according to claim 2 is characterized in that: the opening of described opening piston ring is axial tapered cut.
4. piston assembly of blast furnace gun according to claim 3 is characterized in that: described single-piece piston ring is that cast iron is made, and the opening piston ring is made by nylon material.
5. piston assembly of blast furnace gun according to claim 4 is characterized in that: described pressing plate is embedded in the piston body front end, and fixedly installs by the single ended bolt that is spun on the piston body front end, and described single ended bolt is along the circumferential direction uniform more than four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037021A CN101538624B (en) | 2009-04-27 | 2009-04-27 | Piston assembly of blast furnace gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037021A CN101538624B (en) | 2009-04-27 | 2009-04-27 | Piston assembly of blast furnace gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101538624A CN101538624A (en) | 2009-09-23 |
| CN101538624B true CN101538624B (en) | 2011-06-01 |
Family
ID=41122010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101037021A Expired - Fee Related CN101538624B (en) | 2009-04-27 | 2009-04-27 | Piston assembly of blast furnace gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101538624B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012273B (en) * | 2017-06-16 | 2019-01-01 | 洪德隆 | Clay gun piston |
| CN110564904A (en) * | 2019-09-20 | 2019-12-13 | 本钢板材股份有限公司 | Automatic compensation formula piston structure |
-
2009
- 2009-04-27 CN CN2009101037021A patent/CN101538624B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101538624A (en) | 2009-09-23 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20150427 |
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| EXPY | Termination of patent right or utility model |