CN204817114U - Coating machine oven and its air nozzle - Google Patents

Abstract

The utility model provides a coating machine oven and a tuyere thereof, wherein the tuyere is used for blowing air to a coated substrate to dry the substrate and comprises an air outlet device and an air return device; the air outlet device is provided with an air inlet end and an air outlet end; the air outlet device is provided with two opposite air outlet side plates, and each air outlet side plate is bent towards the other air outlet side plate at the air outlet end to form an air outlet panel; the air return device extends into the air outlet device; the air return device is provided with an air return panel on one surface facing the base material, the air return panel is provided with a plurality of air return holes, and the opening areas of the air return holes gradually narrow from the middle part of the air return panel to the two ends along the length direction of the air return panel; gaps are respectively arranged between the two sides of the air return device and the two air outlet panels of the air outlet device, so that two air outlets are formed at the air outlet end of the air outlet device; when the air nozzle blows air to the substrate through the air outlets, turbulent areas are formed among the two air outlets, the air return device and the substrate. The utility model discloses the drying effect of tuyere to the substrate has been optimized.

Description

Coating machine oven and its air nozzle

technical field

The utility model relates to an oven for a coating machine and an air nozzle thereof.

Background technique

The coating machine is mainly used for the surface coating process of the substrate. Its main working process is to coat the slurry on the substrate, and then dry the coated substrate and wind it up. In the coating machine, a multi-section oven is often set up to dry the coated substrate. There is an air nozzle in the oven to blow the substrate. Direction, return air mode, etc. will have a great impact on the drying rate and drying effect. In order to improve the drying rate and drying effect, optimizing the structure of the tuyere has long been a problem that those skilled in the art have to face.

Utility model content

The purpose of the utility model is to provide a coating machine oven and its tuyere, so as to optimize the drying effect of the tuyere on the base material.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

According to one aspect of the utility model, the utility model provides an air nozzle of a coating machine oven, which is used to blow air to the coated substrate to dry the substrate, including an air outlet device and an air return device; The device has an air inlet end and an air outlet end, and the air outlet end faces the substrate; the air outlet device is provided with two opposite air outlet side plates, and each air outlet side plate is bent toward the other air outlet side plate at the air outlet end respectively. Folded to form an air outlet panel, the two air outlet panels are flush, and there is an interval between the two air outlet panels; the return air device extends into the air outlet device from the air outlet end of the air outlet device; There is a return air panel on one side of the material, and a plurality of return air holes are opened on the return air panel, wherein along the length direction of the return air panel, the opening area of the return air hole gradually changes from the middle of the return air panel to both ends. Narrow, the opening area gradually decreases from the middle of the return air panel to both ends; there are gaps between the two sides of the return air device and the two air outlet panels of the air outlet device, thus forming two outlets at the air outlet end of the air outlet device. Air outlet; when the air nozzle blows air to the base material through the air outlet, a turbulent zone is formed between the two air outlets, the return air device and the base material.

Preferably, the cross-section of the air return device is rectangular, and the air return device further includes a return air bottom plate opposite to the air return panel and a return air side plate arranged between the air return panel and the air return bottom plate; The air outlet is located between the air return side plate and the air outlet panel of the air outlet device.

Preferably, the round corner transition connection between the air return side plate and the air return panel, and the air outlet is located between the round corner and the air outlet panel.

Preferably, the air outlet panel is parallel to the air return panel and perpendicular to the air outlet side plate.

Preferably, a protruding portion protruding outward is provided on the air outlet side plate of the air outlet device, so as to form a convex area in the air outlet device.

Preferably, the air outlet side plate is an integral structure, and the protruding part is formed by bending.

Preferably, the section of the protruding part is triangular.

Preferably, the part of the return air device protruding into the air outlet device does not exceed the protrusion.

Preferably, along the length direction of the air return panel, the number of the air return holes gradually decreases from the middle of the air return panel to both ends.

According to another aspect of the utility model, the utility model also provides an oven for a coating machine, which includes a box body, and the above-mentioned tuyere is arranged in the box body.

It can be seen from the above-mentioned technical scheme that the advantages and positive effects of the utility model are: in the tuyere of the utility model, according to the wall attachment principle, after the hot air is blown out from the air outlet, it will flow along the surface of the return air device, and the air blown out of the two air outlets will The air is mixed, and fully exchanges heat with the slurry on the substrate in the turbulent flow zone formed between the two air outlets, the return air device and the substrate, and absorbs the moisture of the slurry. At the same time, with the return air device, the air that has absorbed the moisture of the slurry is discharged from the return air hole through the return air device, because the return air entering the return air device from the return air panel with many small return air holes is from the middle to both sides Therefore, the humid air taken by the air nozzle from the middle of the substrate also gradually decreases from the middle to both sides, which is offset by the boundary effect that the two sides of the substrate dry faster and the middle dries slower, so that The drying rate across the entire substrate is consistent, thus greatly improving the drying effect of the substrate.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the tuyere of the present invention.

Fig. 2 is a schematic diagram of air flow in a preferred embodiment of the tuyere of the present invention.

Fig. 3 is an axonometric view of a preferred embodiment of the tuyere of the present invention.

Fig. 4 is a schematic diagram of distribution of return air holes in a preferred embodiment of the air nozzle of the present invention.

Fig. 5 is a schematic structural view of a preferred embodiment of the oven for the coating machine of the present invention.

Reference signs are explained as follows: 10, air nozzle; 20, upper air chamber; 30, lower air chamber; 40, box body; 50, base material; 1, air outlet device; 11, air outlet side plate; 111, protrusion; 12 , air outlet panel; 101, air outlet; 102, turbulence area; 103, convex area; 2, return air device; 21, return air panel; 211, return air hole; 22, return air bottom plate; 23, return air side 3. Wind uniform device.

Detailed ways

Typical implementations embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the utility model can have various changes in different embodiments, all of which do not depart from the scope of the utility model, and the description and illustrations therein are used as illustrations in nature, not for To limit the utility model.

Referring to FIG. 1 to FIG. 3 , in a preferred embodiment of the air nozzle 10 of the present invention, the air nozzle 10 mainly includes an air outlet device 1 , an air return device 2 and an air uniform device 3 . The air uniform device 3 is used to connect the hot air source, the air outlet device 1 is used to blow out the hot air entering through the air uniform device 3 to the coated substrate 50 to dry the substrate 50, and the air return device 2 is used to Channels are provided for air that has absorbed moisture from the substrate 50 to escape.

The air outlet device 1 has an air inlet end and an air outlet end, the air inlet end is connected to the air equalizing device 3 , and the air outlet end faces the substrate 50 . The air outlet device 1 is provided with two opposite air outlet side plates 11, each air outlet side plate 11 is bent toward the other air outlet side plate 11 at the air outlet end to form an air outlet panel 12, and the two air outlet panels 12 are flush , and there is an interval between the two air outlet panels 12 .

The air return device 2 extends into the air outlet device 1 from the air outlet end of the air outlet device 1; there is a gap between the two sides of the air return device 2 and the two air outlet panels 12 of the air outlet device 1, so that the air outlet device The air outlet end of 1 forms two air outlets 101. The return air device 2 is provided with a return air panel 21 on the side facing the base material 50, and a plurality of return air holes 211 are provided on the return air panel 21, wherein, the opening area of the return air hole 211 in the middle of the return air panel 21 is relatively wide, The opening area is larger. Along the length direction of the return air panel 21 , the opening area of the return air hole 211 gradually narrows from the middle of the return air panel 21 to both ends, and the opening area gradually decreases from the middle to both ends.

When the air nozzle 10 blows air to the substrate 50 through the air outlets 101 , a turbulent flow zone 102 is formed between the two air outlets 101 , the return air device 2 and the substrate 50 .

When the air nozzle 10 is in operation, hot air enters the air outlet device 1 through the air uniform device 3 . In the air outlet device 1 , the hot air is divided into two paths and blown out from two air outlets 101 respectively. According to the principle of wall attachment, after the hot air is blown out from the air outlet 101, it will flow along the surface of the return air device 2, and the air blown out of the two air outlets 101 will mix to form a In the turbulent flow zone 102, the slurry on the substrate 50 fully exchanges heat and absorbs the moisture of the slurry. At the same time, cooperate with the air return device 2, the air that has absorbed the moisture of the slurry is discharged from the air return hole 211 through the air return device 2, and the hot air blown out from the air outlet 101 is replenished to make the gap between the substrate 50 and the air nozzle 10 The turbulent flow zone 102 is constantly updated to optimize the drying effect on the substrate 50 .

Preferably, the air outlet side plate 11 of the air outlet device 1 is provided with a protruding portion 111 protruding outward, so as to form a convex area 103 inside the air outlet device 1 . Referring to the viewing direction of FIG. 1 , the protruding portion 111 on the left air outlet side plate 11 protrudes leftward, and the upper protruding portion 111 on the right air outlet side plate 11 protrudes rightward.

The air outlet side plate 11 is an integral structure, and the protruding part 111 is formed by bending. In this embodiment, the main body of the air outlet side plate 11 is arranged along the vertical direction, and the protruding part 111 is composed of two bent sides inclined relative to the vertical direction, and the cross section of the protruding part 111 is triangular.

The section of the return air device 2 is roughly rectangular, and the return air device 2 includes a return air panel 21, a return air bottom plate 22 opposite to the return air panel 21, and a return air side plate arranged between the return air panel 21 and the return air bottom plate 22 twenty three. An air outlet 101 is formed between the two air return side panels 23 and the two air outlet panels 12 of the air outlet device 1 .

Preferably, the return air side panels 23 , the return air panel 21 and the return air bottom plate 22 are all connected by rounded transitions.

The return air panel 21 is parallel to the air outlet panel 12 , both of which are horizontally arranged, and the return air panel 21 slightly exceeds the air outlet panel 12 . The air outlet panel 12 points to the joint of the rounded corner of the air return side panel 23 and the air return panel 21 , and the rounded corner can also guide the air blown out through the air outlet 101 to guide the air smoothly to the turbulent flow area 102 .

The part of the air return device 2 protruding into the air outlet device 1 does not exceed the protrusion 111 of the air outlet side plate 11 , and the extension line of the air return bottom plate 22 passes through the convex area 103 in the air outlet device 1 . The air in the air outlet device 1 is resisted by the return air bottom plate 22 and shunted to the direction of the two air outlet side plates 11. At this time, the convex area 103 provides a residence space for the air to buffer the sudden change of air pressure, so that the air outlet 101 The wind that blows out is more stable.

4, along the length direction of the return air panel 21, the number of return air holes 211 in the middle area of the return air panel 21 is greater than the number of return air holes 211 in the two end areas, and along the length direction of the return air panel 21, the return air The number of return air holes 211 in the middle area of the wind panel 21 gradually decreases from the middle to both ends. The distribution area and the return air area of the return air holes 211 in the entire length direction become gradually thinner and smaller. Through this distribution structure, the return air rate of the hot air blown to the middle part of the substrate 50 can be accelerated, which is beneficial to solve the problem of slow drying rate in the middle part of the substrate 50; Decrease gradually, so that the drying speed of the entire substrate 50 is basically the same, so an excellent drying effect can be achieved.

Referring to Fig. 5, the utility model also provides a kind of coating machine oven, and this coating machine oven comprises box body 40, and box body 40 is provided with the upwind chamber 20 and the downwind chamber 30 of upper and lower intervals, the upwind chamber 20 and the downwind chamber 30 A plurality of air nozzles 10 as described above are all installed on them. There is a space between the upper and lower air nozzles 10 through which the substrate 50 can pass. When the substrate 50 passes through, the upper and lower air nozzles 10 blow air on the upper surface and the lower surface of the substrate 50 respectively. The upper air chamber 20 and the lower air chamber 30 respectively provide hot air to the air uniform device 3 of the air nozzle 10, the hot air blown out from the air nozzle 10 is discharged through the air return port of the box body 40, and part of it is mixed with fresh air and reheated before entering The upper wind chamber 20 and the lower wind chamber 30 are used, and the other part is directly discharged.

While the invention has been described with reference to a few exemplary embodiments, it is understood that the words which have been used are words of description and illustration, rather than of limitation. Since the invention can be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly defined within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents should be covered by the appended claims.

Claims (10)

1. a tuyere for coating machine oven, for drying to the base material after coating to carry out drying to base material; It is characterized in that, comprising:

Exhaust apparatus, it has air intake and outlet air end, and outlet air end is towards described base material; Exhaust apparatus is provided with two relative air-out side plates, and each air-out side plate has been bent to form wind outlet panel in outlet air end respectively to another air-out side plate, and two wind outlet panel are concordant, and has interval between two wind outlet panel;

Air-returning device, stretches in exhaust apparatus from the outlet air end of described exhaust apparatus; Air-returning device is provided with wind loop panel in the one side towards base material, described wind loop panel has multiple return air hole, wherein along on wind loop panel length direction, the opening area of return air hole narrows to two ends gradually by the middle part of wind loop panel, and perforated area diminishes to two ends gradually by the middle part of wind loop panel; The both sides of air-returning device have gap respectively and between two wind outlet panel of exhaust apparatus, thus form two air outlets at the outlet air end of exhaust apparatus;

Described tuyere, when being dried to base material by air outlet, two air outlets, forms turbulent area between air-returning device and base material.

2. tuyere according to claim 1, is characterized in that, the rectangular in cross-section of described air-returning device, and air-returning device also comprises the air-return bottom plate relative with described wind loop panel and is arranged on the return air side plate between wind loop panel and air-return bottom plate; Described air outlet is between described return air side plate and the wind outlet panel of described exhaust apparatus.

3. tuyere according to claim 2, is characterized in that, described return air side plate is connected with round-corner transition between described wind loop panel, and described air outlet is between this fillet and described wind outlet panel.

4. tuyere according to claim 2, is characterized in that, described wind outlet panel is parallel with described wind loop panel, and vertical with described air-out side plate.

5. the tuyere according to any one of claim 1-4, is characterized in that, the air-out side plate of described exhaust apparatus is provided with protuberance outstanding laterally, thus forms an outer convex domain in exhaust apparatus.

6. tuyere according to claim 5, is characterized in that, described air-out side plate is structure as a whole, and forms described protuberance by bending.

7. tuyere according to claim 6, is characterized in that, the cross section of described protuberance is triangular in shape.

8. tuyere according to claim 5, is characterized in that, the part that described air-returning device stretches into described exhaust apparatus is no more than described protuberance.

9. the tuyere according to any one of claim 1-4, is characterized in that, on the length direction along described wind loop panel, described return air hole quantity tails off to two ends gradually by the middle part of wind loop panel.

10. a coating machine oven, comprises casing, is provided with the tuyere as described in any one of claim 1-9 in casing.