Patent Application
20120178037
1. Field of the Invention
The present invention relates to a roller sealing device, in particular, to a roller sealing device arranged at an entrance or/and exit of a continuous furnace with a continuous planar processed material applied thereto, and to a gas-sealing method thereby.
2. Description of Related Art
Conventionally, there is a sealing device arranged at entrance or/and exit of a continuous furnace applied with continuous planar processed material, to prevent from the gas leaking outwards from internal of the continuous furnace. Conventional sealing method is to simply put a curtain at the entrance thereof, and it is not a useful preclusion. For nontoxic gas, the conventional sealing method is just acceptable; but for toxic gas, it's full of leakage hazards.
In view of the aforementioned issues, the issue to the present invention is to create a perfect seal device and gas-sealing method in order to prevent from the leakage.
To achieve the above-mentioned objectives, the present invention provides a roller sealing device, arranged at an entrance or/and exit of a continuous furnace applied with a continuous planar processed material. The roller sealing device includes two first roller carriers opposite to each other, and two first roller assemblies opposite to each other. Each first roller assembly includes a first sealing roller and two first auxiliary rollers. The first sealing roller and two first auxiliary rollers are pivoted to a respective one of the first roller carriers; the two first auxiliary rollers are located between the first sealing roller and the corresponding first roller carrier. The first auxiliary rollers abut against the first sealing roller and the corresponding first roller carrier.
To achieve the above-mentioned objectives, the present invention provides a roller sealing device, arranged at an entrance or/and exit of a continuous furnace applied with a continuous planar processed material. The roller sealing device includes two first roller carriers opposite to each other, two first roller assemblies opposite to each other, two second roller carriers opposite to each other, and two second roller assemblies opposite to each other. Each first roller assembly includes a first sealing roller and two first auxiliary rollers. The first sealing roller and two first auxiliary rollers are pivoted to a respective one of the first roller carriers; the two first auxiliary rollers are located between the first sealing roller and the corresponding first roller carrier. The first auxiliary rollers abut against the first sealing roller and the corresponding first roller carrier. Two second roller carriers are disposed at a lateral side of the two first roller carriers. Each second roller assembly includes a second sealing roller and two second auxiliary rollers. The second sealing roller and two second auxiliary rollers are pivoted to a respective one of the second roller carriers; the two second auxiliary rollers are located between the second sealing roller and the corresponding second roller carrier. The second auxiliary rollers abut against the second sealing roller and the corresponding second roller carrier. A negative pressure area is arranged among the two first roller carriers, the two first roller assemblies, the two second roller carriers and two second roller assemblies.
To achieve the above-mentioned objectives, the present invention provides a gas-sealing method. To abut against the upper surface and lower surface of the continuous planar processed material via the two first sealing rollers of the two first roller assemblies respectively is met, while the two second sealing rollers of the two second roller assemblies abut against the upper surface and lower surface of the continuous planar processed material respectively. Then, the first gas access port is used to convey highly-pressured gas to form the positive pressure among the first auxiliary rollers and the two first roller carriers while the second gas access port is used to suck the gas to form the negative pressure among the second auxiliary rollers and the second roller carriers, so that the reaction region is prevented from gas leakage.
It is worth mentioning as followed:
The close contacts between the first sealing roller of one first roller assembly and the upper surface of the continuous planar processed material; and between the first sealing roller of the other first roller assembly and the lower surface of the continuous planar processed material are achieved. The close contacts respectively between each first sealing roller and the first auxiliary rollers are achieved. This arrangement provides a more ideal seal structure. Especially, the pair of first auxiliary rollers serves to double the sealing effect when both are closely abutting the first sealing roller on the first roller carrier. This perfect seal structure prevents the gas from leaking and dissipating outwardly, and is preferable to applied to keep the toxic gas in the continuous furnace.
A further arrangement is provide to keep the whole device better sealed is to put a gas access port between the first auxiliary rollers and each first roller carrier.
The arrangement of the two second roller carriers and the two second roller assemblies is to create another gas sealing structure. The negative pressure area is arranged to suck the gas dissipated from the first roller carriers and the first roller assemblies and to keep the gas sealed between the second roller carriers and the second roller assemblies.
In order to further understand the techniques, means and effects the present invention takes for achieving the prescribed objectives, the following detailed descriptions and appended drawings are hereby referred, such that, through which, the purposes, features and aspects of the present invention can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present invention.
Referring now to
Each first roller assembly 2 includes a first sealing roller 21 and two first auxiliary rollers 22. The first sealing roller 21 defines an axle 211 having two ends, which are pivoted to the two lateral sidewalls 11 of the corresponding first roller carrier 1. Each first auxiliary roller 22 defines an axle 221 having two ends, which are pivoted to the two lateral sidewalls 11 of the corresponding first roller carrier 1. The pivot manner thereto could be accomplished by adapting with the bearing member or the likes (not shown), and there is no further detail described because it is convention prior art. The first auxiliary roller 22 locates between the first sealing roller 21 and the first roller carrier 1. The peripheral of each first auxiliary roller 22 abuts against the first sealing roller 21 and the first roller carrier 1.
The first roller carrier 1, the first sealing roller 21 and the first auxiliary roller 22 could be made of different materials. Usually, the first sealing roller 21 is made of soft materials; while the first auxiliary roller 22 is made of hard material. It is still not a restrain to the materials applied thereto though. The materials of first sealing roller 21 and the first auxiliary roller 22 vary by adapting to the temperature of the texture of the continuous planar processed material A. The first sealing roller 21 could be made of rubber or silicon thereby in order to keep the continuous planar processed material A away from damage. The first auxiliary roller 22 and the first roller carrier 1 could be made of metals or materials of low friction coefficient, so that the frictional abrasion of the first auxiliary roller 22 and the first roller carrier 1 is decreased thereby.
For further gas tightness between each first auxiliary roller 22 and the first roller carrier 1, there is at least one first gas access port 23 is formed between the first auxiliary rollers 22 and the first roller carriers 1, i.e., the first gas access port 23 can be arranged on the first roller carrier 1 and adjacent to the corresponding first auxiliary roller 22. In this embodiment, the first gas access port 23 is a porous structure, which could be made by the ceramics or powder metallurgy technology. The first gas access port 23 is able to include a gas outlet 231, such as a plurality of ventilators connecting a pressure generator, for example a gas-providing source (not shown) for applying highly-pressured gas to the first gas access port 23. The pressured gas is conveyed to where between the first roller carrier 1 and the first auxiliary rollers 22, in order to form a positive pressure state (a kind of gaseous film), which is capable of preventing the disposal gas generated in the reaction region of the continuous furnace from leaking via the conjunction between the first roller carrier 1 and the first auxiliary rollers 22. The ventilators 231 could be replaced by the grooves (not shown). Moreover, the first gas access port 23 is able to connect to a gas extraction device, e.g., an negative pressure generator (not shown) for sucking the gas out of where between the first roller carrier 1 and the first auxiliary rollers 22, in order to form a negative pressure state to prevent the disposal gas generated in the reaction region of the continuous furnace from leaking via the conjunction between the first roller carrier 1 and the first auxiliary rollers 22.
The continuous planar processed material A is conveyed horizontally. When the continuous planar processed material A passes through the entrance and exit of the continuous furnace along the passage, the two first sealing rollers 21 of each first roller assembly 2 respectively abut against an upper surface and a lower surface of the continuous planar processed material A. Each first sealing roller 21 also contacts tightly with the two first auxiliary rollers 22, so that the tight and close contacts are applied to two places respectively, one is between the continuous planar processed material A and each first sealing roller 21, and the other is between each first sealing roller 21 and the corresponding two first auxiliary rollers 22. The arrangement of the first auxiliary rollers 22 is helpful to keep the seal status, and to offer gas sealing even twice by the close contacts respectively via the first sealing rollers 21 and via the first roller carriers 1, so that the gas is prevented from leaking and dissipating outwardly. Moreover, the arrangement of the gas access ports 23 between the first auxiliary rollers 22 and each corresponding first roller carrier 1 is to keep the whole device further sealed.
With respect to
With respect to
A negative pressure area 5 is further arranged among the two first roller carriers 1, the two first roller assemblies 2, the two second roller carriers 1′ and two second roller assemblies 2′. In case that the negative pressure area 5, which is of negative pressure, is capable of keeping the gas retained therein, if the gas leaks from the reaction region. A secondary seal effect resulted from each second roller carrier 1′ and the corresponding two second roller assemblies 2′ further avoid the retained gas running out, in order to meet highly-requested sealing.
With respect to
Referring to
First, to arrange the roller sealing device at the entrance or/and exit of the continuous furnace is done, wherein the roller sealing device has two first roller carriers 1, two roller assemblies 2, two second roller carriers 1′ and two second roller assemblies 2′. The embodiments of the roller sealing device are described as above, and there would be no further mention.
To abut against the upper surface and lower surface of the continuous planar processed material A via the two first sealing rollers 21 of the two first roller assemblies 2 respectively is met, while the two second sealing rollers 21′ of the two second roller assemblies 2′ abut against the upper surface and lower surface of the continuous planar processed material A respectively.
Then, the first gas access port 23 is used to convey highly-pressured gas to form the positive pressure among the first auxiliary rollers 22 and the two first roller carriers 1 while the second gas access port 23′ is used to suck the gas to form the negative pressure among the second auxiliary rollers 22′ and the second roller carriers 1′, so that the reaction region 7 is prevented from gas leakage.
When the reaction region 7 is in the positive pressure, which means the pressure of the reaction region 7 is higher than that of furnace external region 6 while the pressure of the furnace external region 6 is higher than that of the negative pressure area 5, the method according to the embodiments is also adapted thereto. The first and second gas access port s 23 and 23′ are not restrained to positive or negative pressure. For example, the first gas access port s 23 could be negative pressure, the second gas access port 23′ could be positive pressure. The utilization of the pressure variation is offered to the gas sealing structure.
The above-mentioned descriptions represent merely the preferred embodiment of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alternations or modifications based on the claims of present invention are all consequently viewed as being embraced by the scope of the present invention.
