CN2519074Y - Reciprocating ultrashort distance reversing device - Google Patents
Reciprocating ultrashort distance reversing device Download PDFInfo
- Publication number
- CN2519074Y CN2519074Y CN 02228854 CN02228854U CN2519074Y CN 2519074 Y CN2519074 Y CN 2519074Y CN 02228854 CN02228854 CN 02228854 CN 02228854 U CN02228854 U CN 02228854U CN 2519074 Y CN2519074 Y CN 2519074Y
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- Prior art keywords
- sealing
- valve
- air cavity
- bearing
- coaxial
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- Expired - Lifetime
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Abstract
The utility model relates to a reciprocating ultrashort distance reversing device which includes two valve rods(1) sharing the same shaft, two sealing valve plates(3), a sealing element(4), a synchronous shaft(8) for air and coal gas and a shell(9). The shell(9) is provided with a box connecting mechanism which is divided into an upper air cavity(21) and a lower air cavity(22) by the sealing valve plates(3). The two valve rods(1) sharing the same shaft respectively penetrate the shaft holes on the left and the right of the upper air cavity(21) and then a central air flow channel which is on the upper air cavity(21) and the sealing valve plate(3). The utility model is characterized in that the two valve rods(1) between the upper and the lower sealing valve plates(3) is fixed with two symmetrically distributed cone-shaped valve cores(2) with a certain distance. The sealing valve plates(3) are provided with a sealing element(4) with a converse cone-shaped sealing surface and a plane and match with the cone-shaped valve cores(2). The two valve rods(1) sharing the same shaft respectively penetrate the shaft holes on the left and the right of the lower air cavity(22) and then connected with a bearing(6). The utility model has the advantage of good sealing and stability and short travel.
Description
Technical field
The utility model relates to the commutator that a kind of steel rolling heating furnace combustion system is used.
Background technique
Commutator is the nucleus equipment of regenerative combustion technology, and it has finished the commutation action of combustion system, and according to the characteristics of recuperative heater, the commutation cycle is about 1-3 minute, and therefore the operating frequency height requires the reliability height.
1) switch operation is accurate, can not leak.
2) finished the once requirement of commutation according to per 3 minutes, will move every year 170000 times.
The employed commutating device of recuperative heater mainly contains two kinds at present:
Two five-ways, two four-way slide-valve structures.The slide-valve volume is big, stroke long, be the plane type sealing.
Adopt the slide-valve structure, the section of valve body is bigger, and the machining accuracy height of valve plate easily causes internal leakage simultaneously; In addition, the sliding distance of slide-valve is long, brings difficulty for the design of drive unit, causes the impact of cylinder or oil hydraulic cylinder greatly, easily causes cylinder or the breakage of hydraulic cylinder sealing pad, causes cylinder or oil hydraulic cylinder to leak; The spool concentric design difficulty of two four-way slide-valves causes spool to wave in movement process.
Summary of the invention
At above-mentioned deficiency, the purpose of this utility model is to provide a kind of good airproof performance, good stability, the short reciprocating type oversquare commutator of stroke.
To achieve these goals, the technical solution of the utility model is: reciprocating type oversquare commutator, comprise two coaxial valve rods 1, sealing valve plate 3, Sealing 4, air and coal gas synchronizing shaft 8, housing 9, be provided with the header structure in the housing 9, air and coal gas synchronizing shaft 8 and coaxial valve rod 1 are in parallel synchronously, be divided into upper gas chamber 21 by sealing valve plate 3, lower air chamber 22, sealing valve plate 3 has the central gas stream passage, air cavity 19 is positioned at upper left air cavity 21, between the two sealing valve plates 3 of lower-left air cavity 22, smoke evacuation air cavity 20 is positioned at upper right air cavity 21, between the two sealing valve plates 3 of bottom right air cavity 22, two coaxial valve rods 1 pass the axis hole of left and right sides upper gas chamber 21 respectively, and be connected by bearing 6, and pass central gas stream passage on upper gas chamber 21 and the sealing valve plate 3, it is characterized in that fixing on the coaxial valve rod 1 between the upper-lower seal valve plate 3 taper valve core 2 of two symmetric arrangement, two taper valve cores 2 are at a distance of certain distance, sealing valve plate 3 is provided with the inverted cone sealing surface, the Sealing 4 on plane also matches with taper valve core 2, two coaxial valve rods 1 pass the axis hole of left and right sides lower air chamber 22 respectively, connected by bearing 6, coaxial valve rod 1 lower end is positioned at lower cavity 18.
Between taper valve core 2 and the sealing valve plate 3 is the metal hard-sealing of tapered slope, compresses sealing between the facial planes position, limit of taper valve core 2 and the Sealing 4.
Because the utility model sealing valve plate 3 and taper valve core 2 adopt multiple sealing configuration, comprise the metal hard-sealing structure of taper, the sealing configuration of sealing gasket, so good seal performance; Owing to adopt two, help shortening stroke again at a distance of certain distance taper valve core 2; Coaxial valve rod 1 passes lower air chamber 22 and is connected by bearing 6 simultaneously, and coaxial valve rod 1 is provided with upper bearing (metal) and lower bearing, thereby has avoided the generation of dancing, good stability.
Description of drawings:
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model operating state one schematic representation
Fig. 3 is the utility model operating state two schematic representation
Fig. 4 is the utility model sealed structural representation
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, reciprocating type oversquare commutator, mainly by two coaxial valve rods 1, taper valve core 2, sealing valve plate 3, Sealing 4, drive framework 5, bearing 6, pipe joint 7, air and coal gas synchronizing shaft 8, housing 9, counterweight 10, go into gas interface 11, smoke evacuation interface 14, sprocket wheel 15, Transmitted chains 16, drive unit 17 is formed, housing 9 tops are provided with and drive framework 5, drive in the framework 5 and be provided with drive unit 17, be provided with the header structure in the housing 9, for guaranteeing in the combustion system running, air and coal gas fully synchronously, air commutator and coal gas commutator adopt parallel-connection structure, and be synchronous with coaxial valve rod 1 realization in parallel by air and coal gas synchronizing shaft 8; The upper end of two coaxial valve rods 1 is walked around driving framework 5 upper sprocket wheels 15 by Transmitted chains 16 and is connected with two counterweights 10 respectively; Be divided into upper gas chamber 21, lower air chamber 22 by sealing valve plate 3, sealing valve plate 3 has the central gas stream passage; Upper left air cavity 21 communicates with upper pipe interface 7 on the housing 9, is communicated by pipeline in the middle of upper left air cavity 21 and the upper right air cavity 21, has axis hole on the upper left air cavity 21; Air cavity 19 is between two sealing valve plates 3 of upper left air cavity 21, lower-left air cavity 22, and air cavity 19 communicates with upper left air cavity 21, lower-left air cavity 22, and air cavity 19 communicates with the gas interface 11 of going into of housing 9; Lower-left air cavity 22 is communicated by pipeline with bottom right air cavity 22 centres, and lower-left air cavity 22 communicates with the lower pipeline interface 7 of housing 9; Smoke evacuation air cavity 20 is between two sealing valve plates 3 of upper right air cavity 21, bottom right air cavity 22, and smoke evacuation air cavity 20 communicates with upper right air cavity 21, bottom right air cavity 22, and smoke evacuation air cavity 20 communicates with the smoke evacuation interface 14 of housing 9; Two coaxial valve rods 1 pass the axis hole of left and right sides upper gas chamber 21 respectively, and are connected by bearing 6, and pass the central gas stream passage on upper gas chamber 21 and the sealing valve plate 3; Fix the taper valve core 2 of two symmetric arrangement on the coaxial valve rod 1 between the upper-lower seal valve plate 3, two taper valve cores 2 are at a distance of certain distance, for cooperating with taper valve core 2, sealing valve plate 3 is provided with the inverted cone sealing surface equally, is the metal hard-sealing of tapered slope between taper valve core 2 and the sealing valve plate 3; Seal the Sealing 4 that valve plate 3 also is provided with the plane simultaneously, adopt between the facial planes position, limit of taper valve core 2 and the Sealing 4 to compress sealing configuration; Two coaxial valve rods 1 pass the axis hole of left and right sides lower air chamber 22, are connected by bearing 6, and coaxial valve rod 1 lower end is positioned at lower cavity 18.
Drive coaxial valve rod by driving mechanism and rise or descend, drive the purpose that spool does to reach perpendicular to the displacement of valve body sealing surface unlatching and sealing.
The sealing of sealing valve plate 3 and taper valve core 2 realizes its function by the cone-shaped metal hard sealing structure, therefore, as long as circulation area meets the demands just passable, its advantage is that stroke is shorter, be about 1/6 of slide-valve structure, therefore, if finish the commutation action in the same time, the design's movement speed is starkly lower than the slide-valve structure, therefore, the good stability of valve body adopts the short stroke air cylinder driven, to cylinder require low, simultaneously, adopt cone structure, the area of spool reduces, gas flow reduces the good operation stability of valve body to the impact of spool.
Advantage of the present utility model:
A. it is short to drive stroke, is no more than 200mm, so the spool motion speed slows down, little to the impact that drives cylinder; Also reduced simultaneously the impact of spool and sealing surface, reliability is improved.
B. the cone-shaped metal hard sealing structure is adopted in the combination of valve body and spool, and leakproofness is improved, and sealing surface is not rubbed, and the life-span is long.
C. design the concentric shafts structure, sideslip and dancing can not take place in spool operation fully with one heart.
Claims (3)
1, reciprocating type oversquare commutator, comprise two coaxial valve rods (1), sealing valve plate (3), Sealing (4), air and coal gas synchronizing shaft (8), housing (9), housing is provided with the header structure in (9), air and coal gas synchronizing shaft (8) are in parallel with coaxial valve rod (1) synchronously, be divided into upper gas chamber (21) by sealing valve plate (3), lower air chamber (22), sealing valve plate (3) has the central gas stream passage, two coaxial valve rods (1) pass the axis hole of left and right sides upper gas chamber (21) respectively, and be connected by bearing (6), and pass central gas stream passage in upper gas chamber (21) and sealing valve plate (3), it is characterized in that fixing on the coaxial valve rod (1) between the upper-lower seal valve plate (3) taper valve core (2) of two symmetric arrangement, two taper valve cores (2) are at a distance of certain distance, sealing valve plate (3) is provided with the inverted cone sealing surface, the Sealing on plane (4) also matches with taper valve core (2), two coaxial valve rods (1) pass the axis hole of left and right sides lower air chamber (22) respectively, connected by bearing (6), coaxial valve rod (1) lower end is positioned at lower cavity (18).
2, reciprocating type oversquare commutator according to claim 1 is characterized in that being the metal hard-sealing of tapered slope between taper valve core (2) and the sealing valve plate (3), compresses sealing between the facial planes position, limit of taper valve core (2) and the Sealing (4).
3, reciprocating type oversquare commutator according to claim 1 is characterized in that housing (9) is provided with upper bearing (metal) (6) and lower bearing (6), and coaxial valve rod (1) passes upper bearing (metal) (6) and lower bearing (6) to-and-fro motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228854 CN2519074Y (en) | 2002-03-29 | 2002-03-29 | Reciprocating ultrashort distance reversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02228854 CN2519074Y (en) | 2002-03-29 | 2002-03-29 | Reciprocating ultrashort distance reversing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2519074Y true CN2519074Y (en) | 2002-10-30 |
Family
ID=33705307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02228854 Expired - Lifetime CN2519074Y (en) | 2002-03-29 | 2002-03-29 | Reciprocating ultrashort distance reversing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2519074Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307070A (en) * | 2019-06-27 | 2019-10-08 | 三一重型装备有限公司 | Gas reversing arrangement and internal combustion engine |
| US20210318035A1 (en) * | 2018-08-14 | 2021-10-14 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Geothermal heat utilization system |
-
2002
- 2002-03-29 CN CN 02228854 patent/CN2519074Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210318035A1 (en) * | 2018-08-14 | 2021-10-14 | Mitsubishi Heavy Industries Thermal Systems, Ltd. | Geothermal heat utilization system |
| CN110307070A (en) * | 2019-06-27 | 2019-10-08 | 三一重型装备有限公司 | Gas reversing arrangement and internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120329 Granted publication date: 20021030 |