CN204111853U - The air inlet-outlet device of deep-wall type gas nitriding furnace - Google Patents
The air inlet-outlet device of deep-wall type gas nitriding furnace Download PDFInfo
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- CN204111853U CN204111853U CN201420585557.1U CN201420585557U CN204111853U CN 204111853 U CN204111853 U CN 204111853U CN 201420585557 U CN201420585557 U CN 201420585557U CN 204111853 U CN204111853 U CN 204111853U
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Abstract
The utility model discloses a kind of air inlet-outlet device of deep-wall type gas nitriding furnace, comprise the escape pipe and at least two inlet pipe of locating and being arranged on nitriding furnace inner bag inner bottom surface, escape pipe offers some production wells, one end of these at least two inlet pipe is respectively connected with external air supply source respectively, and the other end of these at least two inlet pipe is all fed through nitriding furnace inner bag and is respectively connected with escape pipe respectively by a pipe connecting; Separately to be laid on escape pipe and to be all less than near the aperture of the production well of pipe connecting position and be laid on escape pipe and the aperture of production well away from pipe connecting position, to be laid on escape pipe and to be all greater than near the spacing of adjacent two production wells of pipe connecting position and be laid on escape pipe and the spacing of adjacent two production wells away from pipe connecting position, thus effectively can improve the homogeneity of nitriding atmosphere in nitriding furnace inner bag, improve the quality of nitriding product; Also reduce the consumption of nitriding gas simultaneously, save production cost.
Description
Technical field
The utility model relates to gas nitriding furnace technical field, especially a kind of air inlet-outlet device of deep-wall type gas nitriding furnace.
Background technology
In gas nitriding furnace, the impact of homogeneity on nitriding quality product of the homogeneity of furnace temperature and nitriding atmosphere (namely entering the atmosphere in burner hearth) is very important, very crucial.In prior art, gas nitriding furnace is mostly the homogeneity being improved nitriding atmosphere by the blower fan running be arranged in nitriding furnace inner bag, but for the deep-wall type gas nitriding furnace of the inner bag degree of depth more than 4 meters, improve the homogeneity of nitriding atmosphere by means of only the blower fan running relied in inner bag, its effect is then extremely limited.Therefore in the urgent need to being improved the homogeneity of nitriding atmosphere in nitriding furnace inner bag by the enforcement of alternate manner.
Summary of the invention
In order to overcome above-mentioned defect, the utility model provides a kind of air inlet-outlet device of deep-wall type gas nitriding furnace, and this air inlet-outlet device improves the homogeneity of nitriding atmosphere in nitriding furnace inner bag effectively, improves the quality of nitriding product; Also reduce the consumption of nitriding gas simultaneously, save production cost.
The utility model in order to the technical scheme solving its technical problem and adopt is: a kind of air inlet-outlet device of deep-wall type gas nitriding furnace, comprise diffuser and air-out apparatus, described air-out apparatus comprises escape pipe, described escape pipe location is arranged on the inner bottom surface of nitriding furnace inner bag, and described escape pipe offers some production wells; Described diffuser includes at least two inlet pipe, one end of these at least two inlet pipe is respectively connected with external air supply source respectively, and the other end of these at least two inlet pipe is all fed through described nitriding furnace inner bag and is respectively connected with described escape pipe respectively by a pipe connecting;
Be laid in described in another and be laid in described in being all less than on escape pipe and near the aperture of the production well of pipe connecting position on escape pipe and the aperture of production well away from pipe connecting position, and simultaneously described in be laid in all to be greater than on escape pipe and near the spacing of adjacent two production wells of pipe connecting position described in be laid on escape pipe and the spacing of adjacent two production wells away from pipe connecting position.
As further improvement of the utility model, described nitriding furnace inner bag is hollow circular cylinder shape; Described escape pipe is an annular tracheae, and this some production well circular row is laid on described escape pipe.
As further improvement of the utility model, position locating open also near its top on all side elevations of described nitriding furnace inner bag is provided with at least two inlet mouths matched with described inlet pipe, the equal correspondence of the other end of these at least two inlet pipe is inserted in described inlet mouth, and is respectively connected with described escape pipe respectively by described pipe connecting.
As further improvement of the utility model, these at least two inlet mouths are equidistant and spaced apart along the circumferential direction of described nitriding furnace inner bag.
As further improvement of the utility model, this inlet mouth has three.
As further improvement of the utility model, described pipe connecting is the vertical tubing that round steel material is made, and the axial two ends of described pipe connecting are respectively welded to connect with described inlet pipe and escape pipe and conducting respectively.
The beneficial effects of the utility model are: the air inlet-outlet device of this deep-wall type gas nitriding furnace comprises diffuser and air-out apparatus, wherein, air-out apparatus comprises the annular escape pipe of locating and being arranged on nitriding furnace inner bag inner bottom surface, and escape pipe offers some production wells; Diffuser includes at least two inlet pipe, these at least two inlet pipe are equidistant and spaced apart along the circumferential direction of described nitriding furnace inner bag, and one end of these at least two inlet pipe is respectively connected with external air supply source respectively, the other end of these at least two inlet pipe is all fed through described nitriding furnace inner bag and is respectively connected with escape pipe respectively by a pipe connecting; Separately to be laid on escape pipe and to be all less than near the aperture of the production well of pipe connecting position and be laid on escape pipe and the aperture of production well away from pipe connecting position, and be laid in all to be greater than on escape pipe and near the spacing of adjacent two production wells of pipe connecting position simultaneously and be laid on described escape pipe and the spacing of adjacent two production wells away from pipe connecting position; Thus effectively can improve the homogeneity of nitriding atmosphere in nitriding furnace inner bag, improve the quality of nitriding product; Also reduce the consumption of nitriding gas simultaneously, save production cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
By reference to the accompanying drawings, make the following instructions:
1---nitriding furnace inner bag 2---escape pipe
3---inlet pipe 4---pipe connecting
Embodiment
With reference to the accompanying drawings the embodiment of the air inlet-outlet device of a kind of deep-wall type gas nitriding furnace of the present utility model is described in detail.
The air inlet-outlet device of a kind of deep-wall type gas nitriding furnace described in the utility model, comprise diffuser and air-out apparatus, described air-out apparatus comprises escape pipe 2, and described escape pipe location is arranged on the inner bottom surface of nitriding furnace inner bag 1, and described escape pipe offers some production wells; Described diffuser includes at least two inlet pipe 3, one end of these at least two inlet pipe is respectively connected with external air supply source respectively, and the other end of these at least two inlet pipe is all fed through described nitriding furnace inner bag 1 and is respectively connected with described escape pipe 2 respectively by a pipe connecting 4;
Be laid in described in another and be laid in described in being all less than on escape pipe 2 and near the aperture of the production well of pipe connecting 4 position on escape pipe 2 and the aperture of production well away from pipe connecting 4 position, and simultaneously described in be laid in all to be greater than on escape pipe 2 and near the spacing of adjacent two production wells of pipe connecting 4 position described in be laid on escape pipe 2 and the spacing of adjacent two production wells away from pipe connecting 4 position.Due to escape pipe to be greater than on escape pipe and away from the intake pressure of pipe connecting position near the intake pressure of pipe connecting position, therefore just by less for the aperture design be laid in also near the production well of pipe connecting position on escape pipe, and production well layout is loose; To be laid on escape pipe and aperture design away from the production well of pipe connecting position is comparatively large, and production well compact in design.
In the present embodiment, described nitriding furnace inner bag 1 is hollow circular cylinder shape; Described escape pipe 2 is an annular tracheae, and this some production well circular row is laid on described escape pipe 2.
In the present embodiment, at least two inlet mouths matched with described inlet pipe 3 are provided with on described nitriding furnace inner bag 1 week side elevation and near the position locating open on its top, the equal correspondence of the other end of these at least two inlet pipe is inserted in described inlet mouth, and is respectively connected with described escape pipe 2 respectively by described pipe connecting 4.
In the present embodiment, these at least two inlet mouths are equidistant and spaced apart along the circumferential direction of described nitriding furnace inner bag 1.
Preferably, this inlet mouth has three.It should be noted that the quantity of inlet mouth is not be more manyly more conducive to the homogeneity of nitriding atmosphere.This is because: 1. in the inner bag of the deep-wall type gas nitriding furnace of a constant volume, when arranging too much inlet pipe, too much will inevitably tie up the effective production space in inner bag, thus causing decreasing production output; 2. too much inlet pipe is set, also will inevitably affects the circulating effect of nitriding atmosphere in inner bag, be unfavorable for the homogeneity of nitriding atmosphere; 3. too much inlet pipe is set, too much interface can be equipped with accordingly, not only increase processing and the installation difficulty of pipeline, also increase the gas leakage phenomenon of another interface, be unfavorable for the homogeneity of nitriding atmosphere.And confirmed by numerous test, when arranging three inlet mouths, in nitriding furnace inner bag, the homogeneity of nitriding atmosphere is best.
In the present embodiment, the vertical tubing that described pipe connecting 4 is made for round steel material, the axial two ends of described pipe connecting are respectively welded to connect with described inlet pipe and escape pipe and conducting respectively.
Principle of work of the present utility model is: by offering three along described nitriding furnace inner bag circumferential direction inlet mouth equidistant and spaced apart on described nitriding furnace inner bag 1, and take special production well layout: to be laid in namely on escape pipe and to be laid in described in being all less than near the aperture of the production well of pipe connecting 4 position on escape pipe and the aperture of production well away from pipe connecting 4 position, describedly to be laid on escape pipe and to be laid in described in being all greater than near the spacing of adjacent two production wells of pipe connecting 4 position on escape pipe and the spacing of adjacent two production wells away from pipe connecting 4 position, thus effectively can improve the homogeneity of nitriding atmosphere in nitriding furnace inner bag, improve the quality of nitriding product, also reduce the consumption of nitriding gas simultaneously, save production cost.
Claims (6)
1. the air inlet-outlet device of a deep-wall type gas nitriding furnace, comprise diffuser and air-out apparatus, described air-out apparatus comprises escape pipe (2), described escape pipe location is arranged on the inner bottom surface of nitriding furnace inner bag (1), and described escape pipe offers some production wells; It is characterized in that: described diffuser includes at least two inlet pipe (3), one end of these at least two inlet pipe is respectively connected with external air supply source respectively, and the other end of these at least two inlet pipe is all fed through described nitriding furnace inner bag (1) and is respectively connected with described escape pipe (2) respectively by a pipe connecting (4);
Be laid in escape pipe (2) described in another upper and be laid in the upper and aperture of production well away from pipe connecting (4) position of escape pipe (2) described in being all less than near the aperture of the production well of pipe connecting (4) position, and simultaneously described in be laid in escape pipe (2) upper and be laid in the upper and spacing of adjacent two production wells away from pipe connecting (4) position of escape pipe (2) described in being all greater than near the spacing of adjacent two production wells of pipe connecting (4) position.
2. the air inlet-outlet device of deep-wall type gas nitriding furnace according to claim 1, is characterized in that: described nitriding furnace inner bag (1) is hollow circular cylinder shape; Described escape pipe (2) is an annular tracheae, and this some production well circular row is laid on described escape pipe (2).
3. the air inlet-outlet device of deep-wall type gas nitriding furnace according to claim 2, it is characterized in that: on all side elevations of described nitriding furnace inner bag (1) and near the position locating open on its top, be provided with at least two inlet mouths matched with described inlet pipe (3), the equal correspondence of the other end of these at least two inlet pipe is inserted in described inlet mouth, and is respectively connected with described escape pipe (2) respectively by described pipe connecting (4).
4. the air inlet-outlet device of deep-wall type gas nitriding furnace according to claim 3, is characterized in that: these at least two inlet mouths are equidistant and spaced apart along the circumferential direction of described nitriding furnace inner bag (1).
5. the air inlet-outlet device of deep-wall type gas nitriding furnace according to claim 4, is characterized in that: this inlet mouth has three.
6. the air inlet-outlet device of deep-wall type gas nitriding furnace according to claim 3, it is characterized in that: the vertical tubing that described pipe connecting (4) is made for round steel material, the axial two ends of described pipe connecting are respectively welded to connect with described inlet pipe and escape pipe and conducting respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585557.1U CN204111853U (en) | 2014-10-11 | 2014-10-11 | The air inlet-outlet device of deep-wall type gas nitriding furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585557.1U CN204111853U (en) | 2014-10-11 | 2014-10-11 | The air inlet-outlet device of deep-wall type gas nitriding furnace |
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| CN204111853U true CN204111853U (en) | 2015-01-21 |
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| CN201420585557.1U Active CN204111853U (en) | 2014-10-11 | 2014-10-11 | The air inlet-outlet device of deep-wall type gas nitriding furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318211A (en) * | 2021-11-26 | 2022-04-12 | 宁波吉威熔模铸造有限公司 | Heat treatment equipment for alloy steel investment casting |
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2014
- 2014-10-11 CN CN201420585557.1U patent/CN204111853U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114318211A (en) * | 2021-11-26 | 2022-04-12 | 宁波吉威熔模铸造有限公司 | Heat treatment equipment for alloy steel investment casting |
| CN114318211B (en) * | 2021-11-26 | 2024-01-26 | 宁波吉威熔模铸造有限公司 | Heat treatment equipment for alloy steel investment casting |
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