CN220052890U - Air knife and corona machine - Google Patents
Air knife and corona machine Download PDFInfo
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- CN220052890U CN220052890U CN202321684578.4U CN202321684578U CN220052890U CN 220052890 U CN220052890 U CN 220052890U CN 202321684578 U CN202321684578 U CN 202321684578U CN 220052890 U CN220052890 U CN 220052890U
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- air
- air knife
- knife body
- air inlet
- flow
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- 230000008901 benefit Effects 0.000 abstract description 2
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- 239000007789 gas Substances 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- 238000003851 corona treatment Methods 0.000 description 1
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- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
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Abstract
An air knife and a corona machine relate to the technical field of corona machines. The air knife includes: an air knife body and a flow air duct adjusting plate; an air inlet is formed in one side of the air knife body along the length direction, and an air outlet is formed in the upper side of the air knife body; the flow air duct adjusting plate is arranged in the air knife body and is positioned between the air outlet and the air inlet to divide the interior of the air knife body into an upper region and a lower region; the flow air duct adjusting plate is provided with a plurality of ventilation holes along the length direction of the flow air duct adjusting plate, the aperture of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet and/or the distribution density of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet. The corona machine includes: an air knife as described above. By adopting the technical scheme, the air outlet has the advantage of uniform air output.
Description
Technical Field
The utility model relates to the technical field of corona machines, in particular to an air knife and a corona machine.
Background
Corona treatment machines are commonly known in the packaging industry as corona machines, electronic impactors, and electric spark machines. Is known academically as a dielectric barrier discharge. The method is mainly used for surface treatment of plastic films or plastic plate products, and before the materials are subjected to printing ink, compounding, film blowing, coating, cementing, material modification, grafting, polymerization, film coating, tape casting and pasting, corona impact treatment is needed to be carried out firstly in order to ensure that the surface of the product has stronger adhesion (namely higher dyne coefficient) and prevent the phenomena of color throwing, unstable compounding and pasting, uneven coating and glue leakage and the like of the raw materials in the production process, thereby influencing the product quality.
Chinese patent publication No. CN218452454U discloses a novel corona machine with air knife, which can effectively perform additional treatment on the relevant gas as a material or corona roller. However, in the technology, the air outlet of the air knife is not uniform, the air outlet close to the air inlet of the air knife is large, and the air outlet far away from the air inlet of the air knife is small, so that improvement is urgently needed.
Disclosure of Invention
The utility model aims to overcome the defects and shortcomings of the prior art, and provides an air knife and a corona machine, which have the advantage of uniform air output of an air outlet.
In order to achieve the above purpose, the utility model adopts a technical scheme that: an air knife comprising: an air knife body and a flow air duct adjusting plate;
an air inlet is formed in one side of the air knife body along the length direction, and an air outlet is formed in the upper side of the air knife body;
the flow air duct adjusting plate is arranged in the air knife body and is positioned between the air outlet and the air inlet to divide the interior of the air knife body into an upper region and a lower region;
the flow air duct adjusting plate is provided with a plurality of ventilation holes along the length direction of the flow air duct adjusting plate, the aperture of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet and/or the distribution density of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet.
The utility model further provides two flow air duct adjusting plates which are arranged in parallel and are positioned on the upper side of the air inlet.
The utility model further provides that the air knife body comprises:
the upper side of the shell is provided with the air outlet;
the first sealing plate is covered on one side of the shell, and the air inlet communicated with the inside of the shell is formed in the first sealing plate; and
and the second sealing plate is covered on the other side of the shell.
The utility model further provides that a first sealing element is arranged between the first sealing plate and the shell, and a second sealing element is arranged between the second sealing plate and the shell.
The utility model further provides that the first sealing element and the second sealing element are sealing rings or sealing gaskets.
The utility model further provides that the second sealing plate is provided with a detection opening.
The utility model further provides that the air outlet is a strip-shaped channel arranged on the upper side of the air knife body or a plurality of air outlet holes arranged on the upper side of the air knife body.
The air knife is further provided with an adjusting device for adjusting the size of the air outlet, wherein the air knife body is arranged at a position close to the air outlet.
In order to achieve the above purpose, another technical scheme adopted by the utility model is as follows: an air knife comprising: an air knife body and a flow air duct adjusting plate;
the air knife body is provided with air inlets at two sides along the length direction, and an air outlet at the upper side;
the flow air duct adjusting plate is arranged in the air knife body and is positioned between the air outlet and the air inlet to divide the interior of the air knife body into an upper region and a lower region;
the flow air duct adjusting plate is provided with a plurality of ventilation holes along the length direction, and the aperture of the ventilation holes is gradually increased towards the middle along the two ends and/or the distribution density of the ventilation holes is gradually increased towards the middle along the two ends.
In order to achieve the above object, another technical scheme adopted by the present utility model is as follows: a corona machine, comprising: an air knife as described above.
After the technical scheme is adopted, the utility model has the beneficial effects that:
1. according to the utility model, the air knife is provided with the air inlet, the air knife body is internally provided with the flow air duct adjusting plate, the flow air duct adjusting plate is provided with the plurality of ventilation holes along the length direction of the flow air duct adjusting plate, the aperture of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet, and/or the distribution density of the ventilation holes is gradually increased along the direction from the air inlet to the air inlet, namely, the smaller aperture is closer to the air inlet and/or the more sparse is closer to the air inlet, so that the air knife body fully balances the flow speed and the wind pressure, and the air output of the whole air outlet is uniform.
2. According to the utility model, the air knife is provided with two air inlets which are oppositely arranged, and the air knife body is internally provided with the flow air duct adjusting plate, and the aperture of the air vent is gradually increased towards the middle along the two ends and/or the distribution density of the air vent is gradually increased towards the middle along the two ends, namely, the aperture which is closer to the middle is larger and/or the aperture which is closer to the middle is denser, so that the air knife body fully balances the flow velocity and the air pressure, and the air outlet volume of the whole air outlet is uniform.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of a portion of the structure of the present utility model;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at B in fig. 2;
fig. 5 is an exploded schematic view of the structure of the present utility model.
Reference numerals illustrate: 1. a first sealing plate; 11. an air inlet; 2. a housing; 21. an air outlet; 22. an outer plate; 221. a first adjustment aperture; 3. a second sealing plate; 31. a detection port; 4. a flow air duct adjusting plate; 41. a vent hole; 5. and (5) a screw.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and those skilled in the art can make modifications to the present embodiment which do not contribute to the utility model as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.
Embodiment one: the present embodiment relates to an air knife, as shown in fig. 1 to 5, including: an air knife body and a flow air duct adjusting plate 4.
The air knife body is provided with an air inlet 11 along one side of the length direction, and an air outlet 21 at the upper side. The flow air duct adjusting plate 4 is arranged in the air knife body and is positioned between the air outlet 21 and the air inlet 11. In this embodiment, the position of the flow air duct adjusting plate 4 is higher than the air inlet 11, and the flow air duct adjusting plate 4 divides the inside of the air knife body into an upper region and a lower region.
In this embodiment, the flow air duct adjusting plate 4 is provided with a plurality of ventilation holes 41 along the length direction thereof, and the aperture of the ventilation holes 41 increases along the direction from the air inlet 11 to the air inlet 11 and/or the distribution density of the ventilation holes 41 increases along the direction from the air inlet 11 to the air inlet 11.
Because the aperture of the ventilation hole 41 increases along the direction from the air inlet 11 to the air inlet 11 and/or the distribution density of the ventilation holes 41 increases along the direction from the air inlet 11 to the air inlet 11, that is, the smaller the aperture is closer to the air inlet 11 and/or the sparser the ventilation holes 41 are closer to the air inlet 11, the air knife body is fully balanced in flow velocity and wind pressure, and the air outlet volume of the whole air outlet 21 is even.
As shown in fig. 1, 3 and 5, the air knife body includes: a housing 2, a first sealing plate 1 and a second sealing plate 3. Wherein the upper side of the housing 2 is provided with the air outlet 21 as described above; the first sealing plate 1 is covered on one side of the shell 2, and is provided with an air inlet 11 communicated with the interior of the shell 2; the second sealing plate 3 is covered on the other side of the shell 2.
The air inlet 11 on the first sealing plate 1 is a vacuum air suction inlet for air (such as inert gas) or negative pressure after pressurization, the size of the air inlet can be designed according to the actually required air quantity to ensure the air pressure and the flow velocity, and the component formed by adopting metal or plastic materials or composite materials can be integrated or combined.
The air outlet 21 on the housing 2 is a long strip-shaped channel in this embodiment provided on the upper side of the air knife body. The material selection can be made of plastic or metal, and the component formed by the material selection is not limited to a single material, and can be integrated or combined. In other embodiments, the air outlet 21 may be a plurality of air outlet holes formed on the upper side of the air knife body.
The housing 2, the first sealing plate 1 and the second sealing plate 3 are matched to generate a closed air channel. In order to increase the sealing performance, a first sealing member (not shown) is preferably provided between the first sealing plate 1 and the housing 2, and a second sealing member (not shown) is preferably provided between the second sealing plate 3 and the housing 2.
The sealing element is designed to be airtight, and is used for preventing the air quantity and the air pressure of the entering air from losing and further playing a role in preventing leakage and leakage. The sealing member is a sealing ring or a sealing gasket, and when the first sealing member is a sealing gasket, an opening corresponding to the air inlet 11 needs to be formed so as to allow the required air flow to enter. The second seal may then be of non-open design. The material of the sealing member can be selected from silica gel, rubber plastic, metal and other materials, and is not limited to a single material. The first sealing piece can be fixed between the shell 2 and the first sealing plate 1 through screws, and the second sealing piece can be fixed between the shell 2 and the second sealing plate 3 through screws.
As shown in fig. 2 and 4, the flow air duct adjusting plates 4 are two and arranged in parallel, and are all located on the upper side of the air inlet 11. A supporting structure is arranged in the shell 2, and the flow air duct adjusting plate 4 is in sliding connection with the supporting structure. The material of the flow air duct adjusting plate 4 can be plastic or metal, and the components formed by the materials are not limited to a single material, and can be integrated or combined.
In this embodiment, as shown in fig. 1, the second sealing plate 3 is provided with a detection port 31. The detection port 31 may be used to detect the pressure of the gas, the type of wind speed setting gas. The number of the detecting ports 31 can be one or a plurality of detecting ports can be set according to actual requirements; the material may be plastic or metal, and is not limited to a single material. In other embodiments, the second sealing plate 3 may also be provided as a seal (i.e. without the detection port 31).
As a preferable scheme, as shown in fig. 2-3, an adjusting device for adjusting the size of the air outlet 21 is arranged on the air knife body near the air outlet 21. The air outlet 21 is adjusted in area, so that the air outlet quantity is adjusted.
In this embodiment, the upper side of the air knife body is formed by two splayed outer plates 22, and the air outlet 21 is formed between the upper ends of the two outer plates 22. The adjusting device comprises: a first adjusting hole 221 formed in one of the outer plates 22, a second adjusting hole (not shown) formed in the other outer plate 22 and disposed opposite to the first adjusting hole 221, and a screw 5 penetrating the first adjusting hole 221 and the second adjusting hole to adjust the distance between the upper ends of the two outer plates 22. The distance between the upper ends of the two outer plates 22 is further adjusted by adjusting the tightness of the screws 5, so that the size of the air outlet 21 is changed. In the present embodiment, four sets of the first adjustment holes 221, the second adjustment holes, and the screws 5 are provided.
In other embodiments, other specific structures may be used to adjust the size of the air outlet 21.
Example two (not shown): unlike the first embodiment, in this embodiment, the air knife body is provided with air inlets 11 along both sides of the length direction thereof. The flow air duct adjusting plate 4 is provided with a plurality of vent holes 41 along the length direction thereof, and the aperture of the vent holes 41 is gradually increased towards the middle along the two ends and/or the distribution density of the vent holes 41 is gradually increased towards the middle along the two ends.
Because the aperture of the ventilation hole 41 gradually increases towards the middle along the two ends and/or the distribution density of the ventilation holes 41 gradually increases towards the middle along the two ends, that is, the aperture closer to the middle is larger and/or the aperture closer to the middle is denser than the ventilation holes 41, the air knife body is fully balanced in flow velocity and air pressure, and the air output of the whole air outlet 21 is uniform.
Embodiment III: a corona machine (not shown), comprising: as in the first or second embodiments.
The working principle of the utility model is approximately as follows: when the air knife is provided with the air inlet 11, the aperture of the vent hole 41 is gradually increased along the air inlet 11 towards the direction away from the air inlet 11 and/or the distribution density of the vent hole 41 is gradually increased along the air inlet 11 towards the direction away from the air inlet 11, namely, the smaller the aperture is closer to the air inlet 11 and/or the sparser the vent hole 41 is closer to the air inlet 11, so that the air knife body fully balances the flow velocity and the air pressure, and the air output of the whole air outlet 21 is uniform. When the air knife is provided with two air inlets 11 which are oppositely arranged, the aperture of the vent holes 41 is gradually increased towards the middle along the two ends and/or the distribution density of the vent holes 41 is gradually increased towards the middle along the two ends, namely, the aperture closer to the middle is larger and/or the aperture closer to the middle is more dense than the vent holes 41, so that the air knife body fully balances the flow rate and the air pressure, and the air output of the whole air outlet 21 is uniform.
The above description is only for the purpose of illustrating the technical solution of the present utility model and not for the purpose of limiting the same, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. An air knife, comprising: an air knife body and a flow air duct adjusting plate (4);
an air inlet (11) is formed in one side of the air knife body along the length direction, and an air outlet (21) is formed in the upper side;
the flow air duct adjusting plate (4) is arranged in the air knife body and is positioned between the air outlet (21) and the air inlet (11) to divide the interior of the air knife body into an upper region and a lower region;
the flow air duct adjusting plate (4) is provided with a plurality of vent holes (41) along the length direction of the flow air duct adjusting plate, the aperture of each vent hole (41) is gradually increased along the direction of the air inlet (11) away from the air inlet (11) and/or the distribution density of each vent hole (41) is gradually increased along the direction of the air inlet (11) away from the air inlet (11).
2. The air knife according to claim 1, wherein the number of the flow air duct adjusting plates (4) is two, the two flow air duct adjusting plates are arranged in parallel, and the two flow air duct adjusting plates are located on the upper side of the air inlet (11).
3. The air knife of claim 1, wherein the air knife body comprises:
the shell (2) is provided with the air outlet (21) at the upper side;
the first sealing plate (1) is covered on one side of the shell (2), and the air inlet (11) communicated with the inside of the shell (2) is formed in the first sealing plate; and
and the second sealing plate (3) is covered on the other side of the shell (2).
4. A wind knife according to claim 3, characterised in that a first seal is provided between the first sealing plate (1) and the housing (2), and a second seal is provided between the second sealing plate (3) and the housing (2).
5. The air knife of claim 4, wherein the first seal and the second seal are sealing rings or gaskets.
6. A blade according to claim 3, wherein the second sealing plate (3) is provided with a detection opening (31).
7. The air knife according to claim 1, wherein the air outlet (21) is a strip-shaped channel arranged on the upper side of the air knife body or a plurality of air outlet holes arranged on the upper side of the air knife body.
8. The air knife according to claim 1, wherein an adjusting device for adjusting the size of the air outlet (21) is arranged on the air knife body close to the air outlet (21).
9. An air knife, comprising: an air knife body and a flow air duct adjusting plate (4);
the air knife body is provided with an air inlet (11) at two sides along the length direction, and an air outlet (21) at the upper side;
the flow air duct adjusting plate (4) is arranged in the air knife body and is positioned between the air outlet (21) and the air inlet (11) to divide the interior of the air knife body into an upper region and a lower region;
the flow air duct adjusting plate (4) is provided with a plurality of vent holes (41) along the length direction, the aperture of the vent holes (41) is gradually increased towards the middle along the two ends and/or the distribution density of the vent holes (41) is gradually increased towards the middle along the two ends.
10. A corona machine, comprising: an air knife according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321684578.4U CN220052890U (en) | 2023-06-29 | 2023-06-29 | Air knife and corona machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321684578.4U CN220052890U (en) | 2023-06-29 | 2023-06-29 | Air knife and corona machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220052890U true CN220052890U (en) | 2023-11-21 |
Family
ID=88767954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321684578.4U Active CN220052890U (en) | 2023-06-29 | 2023-06-29 | Air knife and corona machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220052890U (en) |
-
2023
- 2023-06-29 CN CN202321684578.4U patent/CN220052890U/en active Active
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