Drying oven tuyere and drying oven

Abstract

The utility model provides a drying oven tuyere which comprises a tuyere shell, a first mesh plate, a flow guide plate and two flow guide strips, a middle air outlet channel is defined by the flow guide plate, the first mesh plate and the two flow guide strips, the two flow guide strips and the inner wall of the tuyere shell form slit air outlet channels respectively, and air return channels are formed in the two flow guide strips respectively. Due to the fact that the middle air outlet channel, the slit air outlet channel and the air return channel are arranged at the same time, the middle air outlet channel which is prone to being excessively dried is provided with the flow guide plate, the flow guide plate is provided with the third through hole, the problem of cracking caused by drying can be relieved, meanwhile, the slit air outlet channel is provided with the slots, floating force can be provided, the overall floating force change is small, and the service life is prolonged. The risk that the pole piece shakes and scrapes a belt is reduced, no air is discharged from the air return channel, convective heat transfer is reduced, meanwhile, curling and cracking caused by heat transfer of the carrier roller are avoided, and the defect that a dry-wet boundary is obvious due to the fact that the air volume is greatly reduced is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of ovens, in particular to an oven air nozzle and an oven. Background Art

[0002] The oven air nozzle is a device used to control and regulate the air flow inside the oven. The shape and air outlet position of the traditional air nozzle are fixed. Among them, the inner eight air nozzle uses slit form to discharge air, and the lateral air outlet continuity of the electrode is good. The buoyancy force provided is sufficient to make the electrode float and move the belt, and the drying efficiency is high, but it is easy to cause curling and cracking in the thinning area; the mesh air nozzle can alleviate problems such as drying cracking, but its air outlet continuity is poor and it is easy to form drying stripes, and the buoyancy force is small and requires roller support, and the drying efficiency is low; in the prior art, in order to solve the above problems, the two types of air nozzles, when used alone, adjust the air outlet by taping, but both types of air nozzles will cause obvious pressure and air volume fluctuations, causing the electrode to shake and scrape the belt or obvious dry and wet decomposition, so it is necessary to provide a new technology to solve the above problems. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an oven air nozzle and an oven to solve the problems of pole piece shaking and scraping and obvious dry and wet boundaries.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] On the one hand, the utility model provides an oven air nozzle, comprising an air nozzle shell, a first mesh plate, a guide plate and two guide strips, the air nozzle shell comprising an air inlet side and an air outlet side opposite to each other, the first mesh plate and the two guide strips are both located inside the air nozzle shell, the two guide strips are both arranged between the air outlet side and the first mesh plate, and the two guide strips are arranged side by side, the guide plate is arranged on the air outlet side and between the two guide strips, the guide plate, the first mesh plate and the two guide strips enclose a middle air outlet channel, the two guide strips respectively form a slit air outlet channel with the inner wall of the air nozzle shell, and the insides of the two guide strips respectively form return air channels;

[0006] The guide plate is provided with a third through hole to discharge the airflow of the middle air outlet channel to the air outlet side; the two guide strips are provided with a second through hole relative to the side close to the air outlet side to allow the airflow to flow back into the return air channel; the two slit air outlet channels are provided with slits relative to the side close to the air outlet side to discharge the airflow of the slit air outlet channels to the air outlet side; the air inlet side is provided with an air inlet, and the first mesh plate is provided with a first through hole so that the middle air outlet channel and the two slit air outlet channels are connected to the air inlet.

[0007] In the above structure, the cross section of the middle air outlet channel is trapezoidal, and the middle air outlet channel gradually narrows toward the air outlet side.

[0008] In the above structure, the two guide strips are respectively protruded toward the direction close to the two slit air outlet channels.

[0009] In the above structure, the two protrusions are both pointed.

[0010] In the above structure, a second mesh plate is provided between the air inlet side and the first mesh plate, a fourth through hole is provided on the second mesh plate, and an inner diameter of the fourth through hole is greater than an inner diameter of the first through hole.

[0011] In the above structure, a front sealing plate and a rear sealing plate are respectively provided at both ends of the sealing nozzle shell, both of which are provided with ventilation holes, and the two return air passages are connected to the ventilation holes to discharge the airflow in the return air passages.

[0012] In the above structure, the front sealing plate is provided with a handle and a buckle, one end of the guide plate is provided with a pin connected to the rear sealing plate, and the other end of the guide plate is provided with a connecting block connected to the buckle.

[0013] In the above structure, a nozzle base is provided on the air inlet side of the nozzle shell, and two baffles arranged at intervals are provided on the nozzle shell. The nozzle base and the baffles are connected by a connecting plate, and a sealing strip is provided on the connecting plate.

[0014] In the above structure, a nozzle latch and a buckle plate fixing plate are respectively provided on both sides of the nozzle base, and a hook portion is provided on the buckle plate fixing plate.

[0015] On the other hand, the utility model also provides an oven, comprising the aforementioned oven air nozzle.

[0016] The beneficial effects of the utility model are as follows: since an intermediate air outlet channel, a slit air outlet channel and a return air channel are provided at the same time, a guide plate is provided in the intermediate air outlet channel which is prone to over-drying, and a third through hole is provided on the guide plate, the problem of drying and cracking can be alleviated, and at the same time, the slit air outlet channel is provided with slits to provide buoyancy, and the overall buoyancy changes very little, reducing the risk of pole piece shaking and scraping. There is no air outlet in the return air channel, and convective heat exchange is reduced. At the same time, curling and cracking caused by heat transfer from the roller is avoided, and defects such as a significant reduction in air volume and an obvious dry-wet dividing line will not be caused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the internal airflow direction of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the utility model from another angle.

[0021] Figure 4 It is a structural stereogram of the utility model from another angle.

[0022] Figure 5 It is a top view of the utility model.

[0023] Figure 6 It is a structural schematic diagram of a partial structure of the utility model.

[0024] Figure 7 It is a structural schematic diagram of a partial structure of the utility model.

[0025] Figure 8 It is a structural schematic diagram of the air nozzle base of the utility model.

[0026] Fig. 9 It is a side view of the utility model.

[0027] Fig.10 It is a structural schematic diagram of a partial structure of the utility model.

[0028] Wherein: 1-air nozzle housing, 2-first mesh plate, 3-air inlet, 4-second mesh plate, 5-guide strip, 6-guide plate, 7-first connecting piece, 8-second connecting piece, 9-front sealing plate, 10-rear sealing plate;

[0029] 11-flow chamber, 12-dividing chamber, 13-middle air outlet channel, 14-return air channel, 15-slit air outlet channel, 16, air inlet side, 17, air outlet side;

[0030] 21-first through hole, 22-second through hole, 23-third through hole, 24-fourth through hole, 25-slit;

[0031] 51-protrusion;

[0032] 91-ventilation hole, 92-handle, 93-buckle, 94-latch, 95-connection block;

[0033] 111 - first bending portion, 112 - second bending portion, 113 - nozzle base, 114 - baffle, 115 - connecting plate, 116 - sealing strip, 117 - nozzle latch, 118 - buckle plate fixing plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0035] The preferred embodiment of the utility model provides an oven air nozzle, such as Figure 1 , Figure 2 and Figure 6 As shown, it includes a nozzle housing 1, a first mesh plate 2, a guide plate 6 and two guide strips 5. The nozzle housing 1 includes an air inlet side 16 and an air outlet side 17 opposite to each other. The first mesh plate 2 and the two guide strips 5 are both located inside the nozzle housing 1. The two guide strips 5 are both arranged between the air outlet side 17 and the first mesh plate 2, and the two guide strips 5 are arranged side by side. The guide plate 6 is arranged on the air outlet side 17 and is located between the two guide strips 5. The guide plate 6, the first mesh plate 2 and the two guide strips 5 enclose a middle air outlet channel 13. The two guide strips 5 respectively form a slit air outlet channel 15 with the inner wall of the nozzle housing 1, and the interiors of the two guide strips 5 respectively form a return air channel 14; see Fig.10 The guide plate 6 is provided with a third through hole 23 to discharge the airflow of the middle air outlet channel 13 to the air outlet side 17; the two guide strips 5 are provided with a second through hole 22 on one side close to the air outlet side 17 to allow the airflow to flow back into the return air channel 14; see Figure 6 , the two slit air outlet channels 15 are provided with slits 25 on one side close to the air outlet side 17 to discharge the airflow of the slit air outlet channels 15 to the air outlet side 17; the air inlet 3 is provided on the air inlet side 16, and the first through hole 21 is provided on the first mesh plate 2, so that the middle air outlet channel 13 and the two slit air outlet channels 15 are connected to the air inlet 3. Since the middle air outlet channel 13, the slit air outlet channel 15 and the return air channel 14 are provided at the same time, the guide plate 6 is provided in the middle air outlet channel 13 which is prone to over-drying, and the guide plate 6 is provided with a third through hole 23, which can alleviate the problem of drying and cracking. At the same time, the slit air outlet channel 15 is provided with slits 25, which can provide buoyancy. The overall buoyancy changes very little, reducing the risk of pole piece shaking and scraping. The return air channel 14 will not discharge air, and the convective heat exchange is reduced. At the same time, the curling and cracking caused by roller heat transfer is avoided, and the air volume will not be greatly reduced to cause defects such as obvious dry-wet dividing line.

[0036] The cross section of the middle air outlet channel 13 is trapezoidal, and the middle air outlet channel 13 gradually narrows toward the air outlet side 17 . The middle air outlet channel 13 is in an inward-facing eight-shaped shape as a whole, and provides better buoyancy.

[0037] The two guide strips 5 form protrusions 51 in the direction close to the two slit air outlet channels 15, respectively, so that the slit air outlet channels 15 are curved. The flow rate of the airflow slows down when passing through the curve. The faster the airflow rate, the faster the drying. Therefore, the setting of the protrusions 51 is beneficial to prevent the slit air outlet channels 15 from being over-dried.

[0038] Both protrusions 51 are pointed, and the pointed protrusions 51 make the slit air outlet channel 15 more tortuous, further slowing down the flow rate of the air flow, and further preventing the slit air outlet channel 15 from being over-dried.

[0039] A second mesh plate 4 is provided between the air inlet side 16 and the first mesh plate 2, and a fourth through hole 24 is provided on the second mesh plate 4, and the inner diameter of the fourth through hole 24 is greater than the inner diameter of the first through hole 21. The first mesh plate 2 and the second mesh plate 4 are arranged in parallel, and the first mesh plate 2 and the second mesh plate 4 are both fixed to the inside of the air nozzle housing 1 through the first connecting member 7, and a flow cavity 11 is formed on the side close to the air inlet 3, and a diversion cavity 12 is formed on the side away from the air inlet 3. The first connecting member 7 is a rivet, and the diameter of the fourth through hole 24 is set to be greater than the diameter of the first through hole 21, so as to make the airflow entering the diversion cavity 12 uniform, and also have a certain effect of strengthening the wind force.

[0040] In this embodiment, the guide bar 5 is connected to the first mesh plate 2 via a second connecting member 8 , and the second connecting member 8 is a rivet, so that the guide bar 5 is firmly connected to the first mesh plate 2 .

[0041] like Figure 3 and Figure 4 As shown, a front sealing plate 9 and a rear sealing plate 10 are respectively provided at both ends of the nozzle housing 1, and the front sealing plate 9 and the rear sealing plate 10 are connected to the nozzle housing 1 by rivets. Both ends of the guide plate 6 are detachably arranged between the front sealing plate 9 and the rear sealing plate 10. Ventilation holes 91 are provided on the front sealing plate 9 and the rear sealing plate 10, and the two return air channels 14 are connected to the ventilation holes 91 to discharge the airflow in the return air channel 14 to avoid excessive pressure in the return air channel 14 and damage to parts.

[0042] A handle 92 and a buckle 93 are provided on the front sealing plate 9. The handle 92 is used to move the nozzle housing 1. A latch 94 connected to the rear sealing plate 10 is provided at one end of the guide plate 6. A connecting block 95 connected to the buckle 93 is provided at the other end of the guide plate 6. The guide plate 6 is detachably connected to the front sealing plate 9 and the rear sealing plate 10 via the latch 94 and the connecting block 95.

[0043] In this embodiment, if Figure 3 , Figure 4 and Figure 7 As shown, a first bending portion 111 and a second bending portion 112 are provided on one side of the nozzle housing 1 close to the guide strip 5, and the edge of the nozzle housing 1 is chamfered to avoid cracks on the edge of the part, which is beneficial to improving product quality. At the same time, the edge chamfer can avoid damage and scratches caused by sharp edges of parts and improve safety.

[0044] A nozzle base 113 is provided on the air inlet side 17 of the nozzle housing 1. Two spaced baffles 114 are provided on the nozzle housing 1. The nozzle base 113 and the baffles 114 are connected by a connecting plate 115. A sealing strip 116 is provided on the connecting plate 115 to prevent air leakage from affecting the drying effect.

[0045] A nozzle latch 117 and a buckle plate fixing plate 118 are respectively provided on both sides of the nozzle base 111. The nozzle latch 117 and the buckle plate fixing plate 118 are used to connect with external products. A hook portion is provided on the buckle plate fixing plate 118 to further facilitate the convenience of connection.

[0046] In the present invention, an oven is also provided, and the oven includes the oven nozzle provided in the above preferred embodiment.

[0047] Working principle: During drying, Figure 2 As shown, the airflow first enters the flow cavity 11 from the air inlet 3, enters the diverter cavity 12 from the flow cavity 11, and then is divided into three parts and flows out of the diverter cavity 12. The airflows of the left and right parts enter the slit air outlet channel 15 and finally enter the return air channel 14, while the airflow of the middle part enters the middle air outlet channel 13 and then enters the return air channels 14 on both sides. By arranging the first mesh plate 2, the second mesh plate 4, the guide strip 5 and the guide plate 6 inside the air nozzle housing 1, the airflow can be better uniformed and the strength can be improved, and the buoyancy support of the air nozzle on the pole piece can be guaranteed, and the air volume will not be greatly reduced to cause obvious defects such as the dry-wet dividing line; the second mesh plate 4 is arranged to make the airflow entering the diverter cavity 12 uniform; the guide plate 6 with a different aperture from the first mesh plate 2 is arranged, so that the air outlet continuity changes less than the two forms of using the inner eight air nozzle or the mesh air nozzle alone, so that the buoyancy provided by the air nozzle changes less, improves the problem of uneven drying, and avoids causing obvious pressure and air volume fluctuations.

[0048] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An oven air nozzle, characterized in that: It includes a nozzle shell, a first mesh plate, a guide plate and two guide strips, the nozzle shell includes an opposite air inlet side and an air outlet side, the first mesh plate and the two guide strips are both located inside the nozzle shell, the two guide strips are both arranged between the air outlet side and the first mesh plate, and the two guide strips are arranged side by side, the guide plate is arranged on the air outlet side and is located between the two guide strips, the guide plate, the first mesh plate and the two guide strips are enclosed to form a middle air outlet channel, the two guide strips respectively form slit air outlet channels with the inner wall of the nozzle shell, and the insides of the two guide strips respectively form return air channels; The guide plate is provided with a third through hole to discharge the airflow of the middle air outlet channel to the air outlet side; the two guide strips are provided with a second through hole on one side close to the air outlet side to allow the airflow to flow back into the return air channel; the two slit air outlet channels are provided with a slit on one side close to the air outlet side to discharge the airflow of the slit air outlet channels to the air outlet side; the air inlet side is provided with an air inlet, and the first mesh plate is provided with a first through hole so that the middle air outlet channel and the two slit air outlet channels are connected to the air inlet.

2. The oven air nozzle according to claim 1, characterized in that: The cross section of the middle air outlet channel is trapezoidal, and the middle air outlet channel gradually narrows toward the air outlet side.

3. The oven air nozzle according to claim 1, characterized in that: The two guide strips are respectively protruded toward the direction close to the two slit air outlet channels.

4. The oven air nozzle according to claim 3, characterized in that: The two protrusions are both pointed.

5. The oven air nozzle according to claim 1, characterized in that: A second mesh plate is provided between the air inlet side and the first mesh plate, a fourth through hole is provided on the second mesh plate, and an inner diameter of the fourth through hole is greater than an inner diameter of the first through hole.

6. The oven air nozzle according to claim 1, characterized in that: A front sealing plate and a rear sealing plate are respectively provided at both ends of the air nozzle housing, both of which are provided with ventilation holes, and the two return air passages are both connected to the ventilation holes to discharge the airflow in the return air passages.

7. The oven air nozzle according to claim 6, characterized in that: The front sealing plate is provided with a handle and a buckle, one end of the guide plate is provided with a latch connected to the rear sealing plate, and the other end of the guide plate is provided with a connecting block connected to the buckle.

8. The oven air nozzle according to claim 1, characterized in that: A nozzle base is provided on the air inlet side of the nozzle shell, and two baffles arranged at intervals are provided on the nozzle shell. The nozzle base is connected to the baffles via a connecting plate, and a sealing strip is provided on the connecting plate.

9. The oven air nozzle according to claim 8, characterized in that: A nozzle latch and a buckle plate fixing plate are respectively provided on both sides of the nozzle base, and a hook portion is provided on the buckle plate fixing plate.

10. An oven, characterized in that: The invention comprises the oven air nozzle as described in any one of claims 1 to 9.

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