CN211190816U - Roller coater and liquid coating disc thereof - Google Patents
Roller coater and liquid coating disc thereof Download PDFInfo
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- CN211190816U CN211190816U CN201921767259.3U CN201921767259U CN211190816U CN 211190816 U CN211190816 U CN 211190816U CN 201921767259 U CN201921767259 U CN 201921767259U CN 211190816 U CN211190816 U CN 211190816U
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Abstract
The utility model relates to a roll coater and scribble liquid dish thereof, this scribble liquid dish include the disk body, the disk body bottom is equipped with the pneumatic anti-condensation mechanism that is used for improving the circulation of air condition around the dish bottom, pneumatic anti-condensation mechanism including blow the unit and with the air feed unit of unit connection blows, the direction of blowing of unit is towards the surface of dish bottom and/or towards disk body below space. The utility model has the advantages that the blowing unit is arranged at the bottom of the liquid coating disc to promote the circulation of air around the disc bottom, so that the condensation of humid air on the metal surface of the liquid coating disc can be prevented, the dew condensed at the bottom of the liquid coating disc is prevented from dripping on the surface of strip steel to cause the product quality defect, and the working stability of the roller coater is ensured; the pneumatic anti-condensation mechanism is energy-saving and environment-friendly, high in working stability, good in sustainability, low in noise and long in service life, and is suitable for newly-built roller coater units and transformation of the existing roller coater units.
Description
Technical Field
The utility model belongs to the technical field of cold rolling, concretely relates to liquid coating dish of roller coater and adopt this liquid coating dish's roller coater.
Background
Due to the advantages of high film thickness control precision, large coating liquid viscosity adaptability and the like, the roll coater is widely applied to the fields of cold-rolled strip steel processing units such as color coating, zinc plating and silicon steel coating. The horizontal double-sided roller coater is applied to a plurality of units with horizontally running strip steel due to small occupied area, namely 2 coating heads are arranged on a single set of roller coater, the upper coating head is positioned above the strip steel, and the upper surface of the strip steel is coated; the lower coating head is positioned below the strip steel and coats the lower surface of the strip steel; each coating head is provided with a coating liquid disc for dipping coating.
In some cases, for example, due to humid weather in winter in the south, dew is easily condensed at the bottom of the upper liquid coating plate above the strip steel and drips on the surface of the strip steel, so that the quality defect of the strip steel is caused, the horizontal double-sided roll coater of a plurality of units cannot be normally used in winter, and the capacity is severely limited.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a liquid coating dish of roller coater and adopt this liquid coating dish's roller coater can solve prior art's partial defect at least.
The utility model relates to a coating liquid dish of roller coater, which comprises a disc body, the disk body bottom is equipped with the pneumatic anti-condensation mechanism that is used for improving the circulation of air condition around the dish bottom, pneumatic anti-condensation mechanism including blow the unit and with the air feed unit of unit connection blows, the direction of blowing of unit is towards the surface of dish bottom and/or towards disk body below space.
As one embodiment, the air blowing unit comprises an air blowing gun, and the air blowing gun is connected with the air supply unit and is provided with a plurality of air blowing ports on a gun body.
As one embodiment, at least part of the blowing openings are blown towards the outer surface of the tray bottom.
In one embodiment, a partition plate is arranged in the air blow gun, the partition plate divides an inner cavity of the air blow gun into a pressure equalizing chamber and a buffer chamber which are communicated with each other, the air supply unit is communicated with the buffer chamber, and each air blow port is arranged on a gun body corresponding to the pressure equalizing chamber.
As one embodiment, the air supply unit includes an air source and an air supply pipe, and a stop valve is disposed on the air supply pipe.
As one embodiment, the air supply pipe is further provided with a control valve box, and a filter, a pressure reducing valve and a throttle valve are sequentially arranged in the control valve box along the air flow direction.
In one embodiment, the gas supply pipe is provided with a heat exchanger for heating the supplied gas.
As one embodiment, the heat flow medium pipe of the heat exchanger is communicated with the flue gas outlet pipe of the cold rolling annealing furnace.
As one embodiment, a heat insulation layer is arranged between the outer surface and the inner surface of the tray bottom.
The utility model discloses still relate to a roll coater, including top coat head and lower coat head, the top coat head disposes and scribbles the liquid dish, the lower coat head disposes and scribbles the liquid dish down, scribble the liquid dish and adopt as above the liquid dish of scribbling of roll coater.
The utility model discloses following beneficial effect has at least:
the utility model discloses a set up the unit of blowing at the end of liquid coating dish, make the circulation of air around the end of a dish, can prevent humid air and condense at liquid coating dish metal surface, prevent that the dew that condenses at the end of the liquid coating dish from dripping and causing the product quality defect on belted steel surface, guarantee the stability of roller coater work. The pneumatic anti-condensation mechanism is energy-saving and environment-friendly, high in working stability, good in sustainability, low in noise and long in service life, and is suitable for newly-built roller coater units and transformation of the existing roller coater units.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pneumatic anti-condensation mechanism provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of an air blow gun according to an embodiment of the present invention;
fig. 3 is a schematic view of an installation structure of the air blow gun on the liquid coating tray provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 1 and fig. 3, an embodiment of the present invention provides a liquid coating tray for a roll coater, which includes a tray body 200, where the tray body 200 is mainly used for holding paint, so as to facilitate a coating head to dip the paint; the tray 200 is a conventional device in the art, and the detailed structure thereof is not described herein. The bottom of the tray body 200 is provided with a pneumatic anti-condensation mechanism 100 for improving the air circulation condition around the tray bottom, the pneumatic anti-condensation mechanism 100 comprises a blowing unit and an air supply unit connected with the blowing unit, and the blowing direction of the blowing unit faces the outer surface of the tray bottom and/or faces the space below the tray body 200.
According to the liquid coating disc provided by the embodiment, the blowing unit is arranged at the disc bottom, so that air circulation around the disc bottom is promoted, the condensation of humid air on the metal surface of the liquid coating disc can be prevented, the product quality defect caused by the fact that dew condensed at the bottom of the liquid coating disc drops on the surface of strip steel is prevented, and the working stability of the roller coater is ensured. The pneumatic anti-condensation mechanism 100 is energy-saving and environment-friendly, high in working stability, good in sustainability, low in noise and long in service life, and is suitable for the reconstruction of a newly-built roller coater unit and the existing roller coater unit.
The air blowing unit is preferably mounted at the bottom of the tray 200, for example, by a bracket, and is further preferably detachably mounted, thereby facilitating maintenance and modification. In one embodiment, as shown in fig. 1 and fig. 2, the air blowing unit comprises an air blowing gun 101, wherein the air blowing gun 101 is connected with the air supply unit and a plurality of air blowing ports 1011 are arranged on the gun body. In the embodiment shown in fig. 2, the cross section of the air blow gun 101 is rectangular, and when the air blow gun 101 is arranged in the middle of the tray bottom, air is respectively blown to two sides through the left side and the right side of the air blow gun 101, so that the pneumatic turbulence effect of uniform and wide coverage can be achieved; of course, the air blow gun 101 having a circular cross section or the like is suitable for use in the present embodiment.
The air blowing port 1011 can adopt an air seam structure, such as a strip seam; the nozzle can be arranged at the air blowing opening 1011, so that the air flow strength is higher, and the turbulent flow effect is better. In the air blowing openings 1011, at least part of the blowing direction of the air blowing openings 1011 faces the outer surface of the tray bottom, so that the bottom of the tray body 200 is ensured to be dry. In another embodiment, each air blowing port 1011 blows air in a manner parallel to the outer surface of the bottom of the tray body 200, and an air curtain type blocking structure is formed on the outer side of the tray bottom, so that contact between ambient humid air and the tray bottom is reduced and even completely blocked, and a better effect of preventing condensation on the metal surface of the tray bottom can be achieved.
Further preferably, as shown in fig. 2, a partition 1012 is provided in the air blow gun 101, the partition 1012 divides an inner cavity of the air blow gun 101 into a pressure equalizing chamber 1013 and a buffer chamber 1014 which are communicated with each other, the air supply unit is communicated with the buffer chamber 1014, and each air blowing port 1011 is provided on a gun body corresponding to the pressure equalizing chamber 1013. In one embodiment, the area of the partition 1012 is smaller than the cross-sectional area of the air blow gun 101, and in another embodiment, the partition 1012 may be inclined, but it is necessary to ensure that the pressure equalizing chamber 1013 is communicated with the buffer chamber 1014. The air flow firstly enters the buffer chamber 1014, then crosses the clapboard 1012 to enter the pressure equalizing chamber 1013, and the stability of the air flow of each air blowing opening 1011 can be ensured through the pressure equalizing and stabilizing effect of the pressure equalizing chamber 1013. Furthermore, the blowing direction of each blowing port 1011 is perpendicular to the length direction/axial direction of the pressure equalizing chamber 1013, the uniformity of the flow velocity of the outlet airflow is good, and the drying uniformity of the metal surface of the tray bottom is effectively ensured.
Further preferably, as shown in fig. 1, the gas supply unit includes a gas source 102 and a gas supply pipe 103, and a stop valve 104 is disposed on the gas supply pipe 103. Whether the pneumatic anti-condensation mechanism 100 is put into operation or not can be controlled through the stop valve 104, and when the pneumatic anti-condensation mechanism 100 is not required to be used, the stop valve 104 is closed, and no air flow is discharged from each air blowing port 1011; the stop valve 104 is preferably interlocked with the roll coater unit for switching between production and maintenance. If dust is likely to accumulate in the air blow gun 101 without using the pneumatic anti-condensation mechanism 100 for a long time, before the pneumatic anti-condensation mechanism 100 is used, the stop valve 104 can be opened first, the inner cavity of the air blow gun 101 is purged once, and the pressure equalizing chamber 1013 and the buffer chamber 1014 are cleaned, so that impurities in the air blow gun 101 are prevented from affecting normal production.
Further preferably, as shown in fig. 1, a control valve box 105 is further disposed on the air supply pipe 103, and a filter, a pressure reducing valve and a throttle valve are sequentially disposed in the control valve box 105 along the air flow direction. Through this control valve box 105, supplied gas flow, pressure can be adjusted to control the export air current velocity of flow of gas mouth 1011, guarantee the anti-condensation effect, practice thrift the energy consumption.
In order to further optimize the above embodiment, the gas supply pipe 103 is provided with a heat exchanger for heating the supplied gas. The heat exchanger heats the supplied gas, so that the dryness of the supplied gas can be ensured, the supplied gas is heated, the humidity of the air around the tray bottom can be reduced after the supplied gas is mixed with the air around the tray bottom, the temperature of the metal surface of the tray bottom can be increased (the effect is better when the supplied gas is blown towards the metal surface), and the effect of preventing the dewing on the metal surface of the tray bottom is effectively improved.
The heat exchanger is preferably an indirect heat exchanger, in one embodiment, the heating purpose is realized by using a byproduct of a cold rolling system, and particularly, a heat flow medium pipe of the heat exchanger is communicated with a flue gas outlet pipe of the cold rolling annealing furnace. The method adopts the flue gas waste heat generated by combustion in the cold rolling annealing furnace, the temperature of the flue gas is generally 300-400 ℃, the self waste heat resources of the cold rolling system can be fully utilized, the self heat supply is realized, and the energy consumption of the system operation is reduced.
The supplied gas is preferably air; when the smoke of the cold rolling annealing furnace at the temperature of 300-400 ℃ is used for heating the cold rolling annealing furnace, the humidity of the air can be remarkably reduced, the temperature of the air can be remarkably increased, and when the high-temperature dry air is sprayed to an area where the plate bottom is prone to dewing, the phenomenon of dewing on the surface of the metal of the plate bottom can be avoided.
It is further preferred that a thermal insulation layer is provided between the outer and inner surfaces of the tray bottom to avoid the effect on the coating performance in the tray when the temperature of the metal in the tray bottom is raised by the high temperature gas flow. The heat insulation layer can adopt the conventional heat insulation material layer or a vacuum heat insulation layer and the like, and the details are not described herein.
Example two
As shown in fig. 3, the embodiment of the present invention provides a roll coater, which includes an upper coating head 300 and a lower coating head (shown and not labeled), wherein the upper coating head 300 is configured with an upper coating disc, the lower coating head is configured with a lower coating disc, and the upper coating disc adopts the coating disc of the roll coater provided in the first embodiment. Of course, the lower coating liquid pan may be provided with the above-described pneumatic condensation preventing mechanism 100, or not, as the case may be.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a coating liquid dish of roller coat machine, includes the disk body, its characterized in that: the tray body bottom is equipped with the pneumatic anti-condensation mechanism that is used for improving the circulation of air condition around the tray bottom, pneumatic anti-condensation mechanism including blow the unit and with the air feed unit that the unit is connected blows, the direction of blowing of the unit of blowing is towards tray bottom surface and/or towards tray body below space.
2. The applicator pan of a roll coater according to claim 1, wherein: the air blowing unit comprises an air blowing gun, and the air blowing gun is connected with the air supply unit and is provided with a plurality of air blowing ports on the gun body.
3. The applicator pan of a roll coater according to claim 2, wherein: at least part of the blowing ports face the outer surface of the tray bottom.
4. The applicator pan of a roll coater according to claim 2, wherein: the air blow gun is internally provided with a partition board which divides an inner cavity of the air blow gun into a pressure equalizing chamber and a buffer chamber which are communicated with each other, the air supply unit is communicated with the buffer chamber, and each air blow port is arranged on a gun body corresponding to the pressure equalizing chamber.
5. The applicator pan of a roll coater according to claim 1, wherein: the air supply unit comprises an air source and an air supply pipe, and a stop valve is arranged on the air supply pipe.
6. The applicator pan of a roll coater according to claim 5, wherein: the air supply pipe is also provided with a control valve box, and a filter, a pressure reducing valve and a throttle valve are sequentially arranged in the control valve box along the air flow direction.
7. The applicator pan of a roll coater according to claim 5, wherein: the gas supply pipe is provided with a heat exchanger for heating supplied gas.
8. The applicator pan of a roll coater according to claim 7, wherein: and a heat flow medium pipe of the heat exchanger is communicated with a flue gas outlet pipe of the cold rolling annealing furnace.
9. The applicator pan of a roll coater according to claim 7, wherein: a heat insulation layer is arranged between the outer surface and the inner surface of the plate bottom.
10. A roller coater comprises an upper coating head and a lower coating head, wherein the upper coating head is provided with an upper liquid coating disc, and the lower coating head is provided with a lower liquid coating disc, and is characterized in that: the liquid applying plate of the roll coater in any one of claims 1 to 9 is adopted as the liquid applying plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921767259.3U CN211190816U (en) | 2019-10-21 | 2019-10-21 | Roller coater and liquid coating disc thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921767259.3U CN211190816U (en) | 2019-10-21 | 2019-10-21 | Roller coater and liquid coating disc thereof |
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| Publication Number | Publication Date |
|---|---|
| CN211190816U true CN211190816U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921767259.3U Active CN211190816U (en) | 2019-10-21 | 2019-10-21 | Roller coater and liquid coating disc thereof |
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| CN (1) | CN211190816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575944A (en) * | 2019-10-21 | 2019-12-17 | 中冶南方工程技术有限公司 | Roller coater and liquid coating disc thereof |
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2019
- 2019-10-21 CN CN201921767259.3U patent/CN211190816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575944A (en) * | 2019-10-21 | 2019-12-17 | 中冶南方工程技术有限公司 | Roller coater and liquid coating disc thereof |
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