Air knife structure with flat air duct

Abstract

The utility model discloses an air knife structure with a flat air duct, which relates to the field of drying equipment and comprises an upper air knife plate and a lower air knife plate, an air cavity is formed on the surface of one side of the lower air knife plate close to the upper air knife plate, an air duct slot is formed on the front side edge of the air cavity, and a lower compression air duct is formed on the front side edge of the air duct slot; an upper compression air channel is formed in the surface of the side, close to the lower air knife plate, of the upper air knife plate, and a plane air outlet is formed in a fit clearance in the front side edge position between the upper compression air channel and the lower compression air channel. Compared with the prior art, air flow is compressed through the upper compression air duct and the lower compression air duct and then pressurized and output from the plane air outlet, the air flow can be kept on the same plane when output, overall drying of plane products is achieved, full drying can be achieved only by arranging an air knife on one side, and the drying efficiency is improved. And the air volume required to be consumed during air blowing is effectively reduced, so that the technical effect of saving energy is achieved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment, and in particular to an air knife structure with a smooth air duct. Background Technology

[0002] Existing air knives blow dry air out through a long, narrow vent. However, the airflow may vary at different points in the vent, resulting in uneven airflow and affecting the drying effect.

[0003] After the flat products such as glass, stone slabs, and wood are processed, they need to be cleaned with water or cleaning solution. After cleaning, the surface of the flat products needs to be dried. Generally, two or more air knives are used to blow air onto the surface. However, due to the poor uniformity of air output from the air knife structure, more compressed air is required to achieve thorough drying.

[0004] Therefore, it is necessary to set up an air knife structure with a flat air duct so that the air outlet angle is kept on the same plane. The drying of the entire flat product can be achieved by using an air knife on one side, so as to achieve the technical effect of energy saving. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0006] A flat air knife structure includes an upper air knife plate and a lower air knife plate. The lower air knife plate has an air cavity formed on the side surface near the upper air knife plate. An air duct slot is formed on the front edge of the air cavity. A lower compression air duct is formed on the front edge of the air duct slot.

[0007] The upper air blade has an upper compression air duct formed on the side surface near the lower air blade. The mating gap at the front edge of the upper and lower compression air ducts forms a planar air outlet.

[0008] Furthermore, the upper and lower air blades are locked together by screws, and air blade shafts are fixedly installed on both the left and right ends of the rear side of the upper air blade.

[0009] Furthermore: the bottom side of the lower air blade is formed with several countersunk holes, the bottom side of the upper air blade is formed with several threaded holes, and several screws are provided for installing the upper and lower air blades, and the screws pass through the countersunk holes one by one and are screwed into the threaded holes.

[0010] Furthermore: several thickened rings are formed within the groove of the air duct, the thickness of the thickened rings being the same as the depth of the air knife groove, and the screws for installing the upper and lower air knife plates are respectively set through the thickened rings.

[0011] Furthermore, several of the thickened rings are arranged at equal intervals in the air duct slot.

[0012] Furthermore: the lower compression air duct includes a first transverse groove, a convex edge, and a second transverse groove. The convex edge is located between the first transverse groove and the second transverse groove. The first transverse groove is located on the front side of the air duct slot. A pressure gap is left between the upper compression air duct and the lower compression air duct. The pressure gap connects the air duct slot and the planar air outlet.

[0013] Furthermore, the width of the convex edge is smaller than the width of the upper compression air duct.

[0014] Furthermore: the distance between the surface of the slotted air duct and the bottom side of the upper air blade is L1, the distance between the surface of the first transverse groove and the bottom side of the upper air blade is L2, the distance between the top side of the convex edge and the upper compression air duct is L3, the distance between the second transverse groove and the bottom side of the upper air blade is L4, the thickness of the planar air outlet is L5, and the distance between the air cavity and the bottom side of the upper air blade is L6, where L6 > L2 > L1 = L3 = L4 > L5.

[0015] Furthermore, the thickness of the planar air outlet is set between 0.05mm and 0.13mm.

[0016] Furthermore, the distance of L6 is set between 3-7mm.

[0017] Furthermore, the distance of L2 is set between 1.5mm and 2mm.

[0018] Furthermore, the distance between L1, L3, and L4 is set between 1.2mm and 1.5mm.

[0019] Furthermore, the front edge of both the upper and lower air blades is formed with a chamfer, and the chamfer is located on the side edge away from the planar air outlet.

[0020] Furthermore, the angle between the chamfer and the planar air outlet is set at 40°-50°.

[0021] Furthermore, the upper surface of the upper air blade is formed with a number of air holes, which are interconnected with the air cavity.

[0022] Furthermore, the bottom surface of the upper air blade and the top surface of the lower air blade are both ground smooth using a grinding machine.

[0023] Furthermore: several pores are arranged at equal intervals.

[0024] Compared with the prior art, the beneficial effects of this utility model are: by utilizing the cooperation between the upper and lower compression air ducts to form a structure that blocks the airflow, the airflow will not be directly output after being pressurized. After the airflow is compressed through the upper and lower compression air ducts, it is pressurized and output from the flat air outlet, so that the airflow can be kept on a plane when it is output, thereby achieving overall drying of flat products. Moreover, only a single-sided air knife is needed to achieve thorough drying, effectively reducing the air volume required for blowing.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0029] Figure 3 This is an exploded structural diagram of the present invention;

[0030] Figure 4 yes Figure 3 A magnified structural diagram at point A;

[0031] Figure 5 This is an exploded structural diagram of the present invention from another perspective;

[0032] Figure 6 yes Figure 5 A magnified structural diagram at point B;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the upper and lower air blades of this utility model when they are assembled together.

[0034] The diagram shows: 1. Upper air blade; 2. Lower air blade; 3. Air cavity; 4. Air duct slot; 5. Lower compression air duct; 51. First horizontal groove; 52. Protruding edge; 53. Second horizontal groove; 6. Upper compression air duct; 7. Flat air outlet; 8. Screw; 9. Air blade shaft; 10. Countersunk hole; 11. Threaded hole; 12. Thickened ring; 13. Chamfer; 14. Air hole. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0036] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0037] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] like Figure 1-7 As shown, the present invention provides a flat air knife structure, including an upper air knife plate 1 and a lower air knife plate 2. The lower air knife plate 2 has an air cavity 3 formed on the side surface near the upper air knife plate 1. An air duct slot 4 is formed on the front edge of the air cavity 3, and a lower compression air duct 5 is formed on the front edge of the air duct slot 4.

[0041] The upper air blade 1 has an upper compression air duct 6 formed on the side surface near the lower air blade 2. The mating gap between the upper compression air duct 6 and the lower compression air duct 5 at the front edge position forms a planar air outlet 7.

[0042] The principle is as follows: by utilizing the cooperation between the upper compression air duct 6 and the lower compression air duct 5, a structure is formed to block the airflow, so that the airflow will not be directly output after being pressurized. After the airflow is compressed through the upper compression air duct 6 and the lower compression air duct 5, it is pressurized and output from the flat air outlet 7, so that the airflow can be kept on a plane when it is output, achieving overall drying of flat products. Moreover, only a single-sided air knife is needed to achieve thorough drying, effectively reducing the air volume required when blowing.

[0043] Furthermore: the upper air blade 1 and the lower air blade 2 are locked together by screws 8, and air blade rotating shafts 9 are fixedly installed on both the left and right ends of the rear side of the upper air blade 1; the setting of the air blade rotating shafts 9 can facilitate the angle adjustment of the air blade structure, thereby making it easier to control the air outlet angle, and is suitable for drying various flat products.

[0044] Furthermore: the bottom side of the lower air blade 2 is formed with a number of countersunk holes 10, and the bottom side of the upper air blade 1 is formed with a number of threaded holes 11. A number of screws 8 are provided for installing the upper air blade 1 and the lower air blade 2, and the screws 8 pass through the countersunk holes 10 one by one and are screwed into the threaded holes 11; this can ensure the stable assembly between the upper air blade 1 and the lower air blade 2.

[0045] Furthermore, the air duct groove 4 is formed with several thickened rings 12. The thickness of the thickened rings 12 is the same as the depth of the air knife groove. The screws 8 for installing the upper air knife plate 1 and the lower air knife plate 2 are set through the thickened rings 12 one by one. The setting of the thickened rings 12 can ensure that the screws 8 are locked with uniform force. Even if the locking force of each screw 8 is different, it will not cause the internal air duct groove 4 to deform, thereby achieving the technical effect of uniform air output and improving service life.

[0046] Furthermore, several thickened rings 12 are arranged at equal intervals in the air duct slot 4, which can ensure the uniformity of force and airflow.

[0047] Furthermore: The lower compression air duct 5 includes a first transverse groove 51, a convex edge 52, and a second transverse groove 53. The convex edge 52 is disposed between the first transverse groove 51 and the second transverse groove 53. The first transverse groove 51 is disposed on the front side of the air duct slot 4. A wind pressure gap is left between the upper compression air duct 6 and the convex edge 52. The wind pressure gap connects the air duct slot 4 and the planar air outlet 7. The structure of the lower compression air duct 5 and the upper compression air duct 6 can be used to form an air duct structure that blocks the airflow, allowing the airflow to be fully pressurized in the wind pressure gap before being output through the planar air outlet 7. This keeps the airflow on a single plane and is suitable for surface drying of various planar products.

[0048] Furthermore, the width of the protruding edge 52 is smaller than the width of the upper compression air duct 6; it can form an air pressure gap to ensure the uniformity of airflow.

[0049] Furthermore: the distance between the surface of the air duct slot 4 and the bottom side of the upper air blade 1 is L1, the distance between the surface of the first transverse groove 51 and the bottom side of the upper air blade 1 is L2, the distance between the top side of the convex edge 52 and the upper compression air duct 6 is L3, the distance between the second transverse groove 53 and the bottom side of the upper air blade 1 is L4, the thickness of the planar air outlet 7 is L5, and the distance between the air cavity 3 and the bottom side of the upper air blade 1 is L6, where L6 > L2 > L1 = L3 = L4 > L5; after the airflow enters the air cavity 3, it can be diffused and compressed through the compression air duct, and then initially pressurized through the gap between the upper compression air duct 6 and the lower compression air duct 5, and finally further pressurized through the planar air outlet 7 to achieve a stable airflow effect, keeping the airflow on a single plane.

[0050] Furthermore, the distance of L6 is set between 3-7mm; preferably 5.2mm, so that the airflow can be uniformly diffused into the air cavity 3.

[0051] Furthermore, the distance of L2 is set between 1.5mm and 2mm; preferably 1.8mm, which allows for initial pressurization.

[0052] Furthermore, the distance between L1, L3, and L4 is set between 1.2mm and 1.5mm; preferably 1.4mm, which can achieve further pressurization.

[0053] Furthermore, the thickness of the planar air outlet 7 is set between 0.05mm and 0.13mm; preferably 0.07mm, which can fully pressurize the airflow and keep the airflow output on a single plane.

[0054] Furthermore, the front edge of the upper air blade 1 and the front edge of the lower air blade 2 are both formed with chamfered angles 13, which are located on the side edge away from the plane air outlet 7. When the airflow is blown out, the chamfered angles 13 can be used to drive the surrounding airflow to flow, so as to achieve the effect of high-pressure airflow drying on the plane.

[0055] Furthermore, the angle between the chamfered angle 13 and the flat air outlet 7 is set at 40°-50°; preferably 45°; this can achieve stable airflow control, avoid airflow erratic movement, and ensure sufficient drying on the flat product.

[0056] Furthermore, the upper surface of the upper air blade 1 is formed with a number of air holes 14, which are interconnected with the air cavity 3; compressed gas can be input into the air cavity 3 in a diversion manner to achieve a uniform air intake effect, thereby enhancing the uniformity of the air outlet.

[0057] Furthermore, the bottom surface of the upper air blade 1 and the top surface of the lower air blade 2 are both ground flat using a grinding machine. Since the grinding machine can produce a very flat surface, it can ensure that the airflow is on the same plane, thereby effectively improving the energy efficiency of the blowing and drying process.

[0058] Furthermore, several air holes 14 are arranged at equal intervals to each other, allowing compressed air to enter the air chamber 3 evenly.

[0059] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A wind tunnel leveling air knife structure comprising an upper air knife plate and a lower air knife plate, characterized in that: a wind cavity is formed on one side surface of the lower air knife plate close to the upper air knife plate, a wind channel slot is formed on the front side edge of the wind cavity, and a lower compression wind channel is formed on the front side edge of the wind channel slot; an upper compression wind channel is formed on one side surface of the upper air knife plate close to the lower air knife plate, and a planar air outlet is formed at the cooperation gap of the front side edge position between the upper compression wind channel and the lower compression wind channel; the lower compression wind channel comprises a first horizontal groove, a convex edge, and a second horizontal groove, the convex edge is arranged between the first horizontal groove and the second horizontal groove, the first horizontal groove is arranged on the front side of the wind channel slot, a wind pressure gap is left between the upper compression wind channel and the convex edge, and the wind pressure gap is communicated between the wind channel slot and the planar air outlet.

2. The air duct smoothing air knife structure of claim 1, wherein: The upper air knife plate and the lower air knife plate are locked by screws, and the left and right ends of the rear side of the upper air knife plate are fixedly installed with air knife rotating shafts.

3. The air duct smoothing air knife structure of claim 2, wherein: The bottom side of the lower air knife plate is formed with a plurality of countersunk holes, the bottom side of the upper air knife plate is formed with a plurality of threaded holes, a plurality of screws for installing the upper air knife plate and the lower air knife plate are provided, and the plurality of screws are one-to-one correspondingly threaded through the countersunk holes and screw-fitted in the threaded holes.

4. The air duct smoothing air knife structure of claim 3, wherein: A plurality of thickened rings are formed in the wind channel slot, the thickness of the thickened ring is the same as the depth of the air knife slot, and the screws for installing the upper air knife plate and the lower air knife plate are one-to-one correspondingly threaded through the thickened rings.

5. The air duct smoothing air knife structure of claim 4, wherein: The plurality of thickened rings are arranged at equal distances from each other in the wind channel slot.

6. The air duct flattened air knife structure of claim 1, wherein: The width of the convex edge is less than the width of the upper compression wind channel.

7. The air duct flattened air knife structure of claim 1, wherein: The front side edge of the upper air knife plate and the front side edge of the lower air knife plate are both formed with an inverted bevel, and the inverted bevel is located on the side edge away from the planar air outlet.

8. The air duct smoothing air knife structure of claim 1, wherein: The upper side surface of the upper air knife plate is formed with a plurality of air holes, and the air holes are arranged at equal distances from each other.

9. The air duct flattened air knife structure of claim 8, wherein: The plurality of air holes are arranged at equal distances from each other.

Images