Double-slit air knife
By using the integrated structure and wedge-shaped blade design of the double-slit air knife, the problems of uneven gas mixing and vibration in traditional air knives are solved, resulting in smooth airflow, reduced air consumption, and uniform air curtain, which extends the life of the device and improves product yield.
Patent Information
- Application Number
- CN202520474660.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Traditional single-slit air knives suffer from uneven gas mixing and obstructed channels during high-speed air jetting, leading to vibration, reduced device lifespan, and inability to effectively control watermarks, thus affecting product yield.
It adopts an integrated double-slit structure with a mixing chamber inside the substrate. Combined with the 45° and 60° wedge blade design, the first and second air curtain components form air curtains at 45° and 60° angles respectively, eliminating resonance superposition, reducing vibration, and improving gas uniformity.
It achieves smooth, collision-free airflow, reduces air consumption, improves air curtain uniformity, extends equipment life, and increases product yield.
Smart Images
Figure CN223856096U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of air knife, specifically a double-slit air knife. BACKGROUND
[0002] In high-speed precision scenes such as lithium battery pole piece drying, photovoltaic glass cleaning, surface water mark control directly affects product yield. The traditional single-slit air knife is not uniform in gas mixing due to different air inlet holes, the gas channel is not smooth during high-speed air injection, and collision is easy to occur at the nozzle, and at the same time, the air inlet is directly connected with the exhaust groove, which will produce vibration during high-speed air supply, thereby reducing the service life of the device. Therefore, the technical personnel in the art provides a double-slit air knife to solve the problems raised in the above background technology. SUMMARY
[0003] The utility model aims at providing a double-slit air knife to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] A double-slit air knife, comprising a substrate, one end of the substrate is fixedly connected with a first side sealing plate through a bolt, the other end of the substrate is fixedly connected with a second side sealing plate through a bolt, and the first side sealing plate and the substrate are provided with a first air curtain assembly for generating an air knife, and the second side sealing plate and the substrate are provided with a second air curtain assembly for generating another angle air knife.
[0006] Further, the first air curtain assembly comprises a first main air inlet hole, a first auxiliary air inlet hole, a mixing bin, a second main wedge-shaped block and a second matching wedge-shaped block, the mixing bin is opened on the substrate, the first main air inlet hole and the first auxiliary air inlet hole are opened on the first side sealing plate, the first main air inlet hole and the first auxiliary air inlet hole are located on the same horizontal plane, and the first main air inlet hole and the first auxiliary air inlet hole are in communication with the mixing bin.
[0007] Further, the lower end of the substrate is fixedly connected with a second main wedge-shaped block on one side, and the first side sealing plate is fixedly connected with a second matching wedge-shaped block for matching the second main wedge-shaped block.
[0008] Further, the second air curtain assembly comprises a second main air inlet hole, a second auxiliary air inlet hole, a first matching wedge-shaped block and a first main wedge-shaped block, the second main air inlet hole and the second auxiliary air inlet hole are opened on the second side sealing plate, the second main air inlet hole and the second auxiliary air inlet hole are located on the same horizontal plane, and the second main air inlet hole and the second auxiliary air inlet hole are in communication with the mixing bin.
[0009] Further, the lower end of the substrate is fixedly connected with a first main wedge-shaped block, and the lower end of the second side sealing plate is fixedly connected with a first matching wedge-shaped block for matching the first main wedge-shaped block.
[0010] By adopting the technical scheme,
[0011] Compared with the prior art, the utility model has the advantages that:
[0012] 1. The integrated double-slit structure eliminates the resonance superposition of the traditional double air knife, the mixing bin is arranged in the substrate, the negative pressure effect can be generated, and the vibration can be effectively reduced;
[0013] 2. The front slit 45° wedge-shaped knife peels off the water film, the rear slit 60° wedge-shaped knife discharges the gas, the air duct runs more smoothly under high speed, and there is no internal collision condition;
[0014] 3. The volume of the double-slit air knife is smaller than that of the traditional double air knife, the gas consumption is reduced, and the gas of different air inlet holes can be mixed in the mixing bin, so that the sprayed air curtain can be more uniform. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is an explosion structure schematic view of a double-slit air knife;
[0016] Fig. 2 It is an overall structure schematic view of a double-slit air knife;
[0017] Fig. 3 It is a front view structure schematic view of a double-slit air knife;
[0018] In the drawing: 1, first main air inlet hole; 2, first auxiliary air inlet hole; 3, first side sealing plate; 4, mixing bin; 5, substrate; 6, second side sealing plate; 7, second main air inlet hole; 8, second auxiliary air inlet hole; 9, first matching wedge-shaped block; 10, first main wedge-shaped block; 11, second main wedge-shaped block; 12, second matching wedge-shaped block. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments. In the description of the utility model, it should be noted that the directions or position relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0020] Please refer to Figs. 1-3This utility model provides an embodiment of a double-slit air knife, including a base plate 5. One end of the base plate 5 is fixedly connected to a first side sealing plate 3 by bolts, and the other end of the base plate 5 is fixedly connected to a second side sealing plate 6 by bolts. The first side sealing plate 3 and the base plate 5 are provided with a first air curtain assembly for generating an air knife, and the second side sealing plate 6 and the base plate 5 are provided with a second air curtain assembly for generating an air knife at another angle.
[0021] In this embodiment, the first air curtain assembly includes a first main air inlet 1, a first secondary air inlet 2, a mixing chamber 4, a second main wedge block 11, and a second mating wedge block 12. The mixing chamber 4 is provided on the base plate 5, and the first main air inlet 1 and the first secondary air inlet 2 are provided on the first side sealing plate 3. The first main air inlet 1 and the first secondary air inlet 2 are located on the same horizontal plane, and both the first main air inlet 1 and the first secondary air inlet 2 are interconnected with the mixing chamber 4. The second main wedge block 11 is fixedly connected to one side of the lower end of the base plate 5, and the second mating wedge block 12 for mating with the second main wedge block 11 is fixedly connected to the first side sealing plate 3. The first side sealing plate 3 is fixed to one side of the base plate 5 by bolts, and the interval between them is a predetermined range. At this time, when the gas from different air inlets is filled into the mixing chamber 4, it can be effectively discharged along the gap and form a water curtain. Through the mutual cooperation of the second main wedge block 11 and the second mating wedge block 12, the water curtain can be changed to a certain angle when it is sprayed out.
[0022] In this embodiment, the second air curtain assembly includes a second main air inlet 7, a second secondary air inlet 8, a first mating wedge block 9, and a first main wedge block 10. The second side sealing plate 6 has a second main air inlet 7 and a second secondary air inlet 8. The second main air inlet 7 and the second secondary air inlet 8 are located on the same horizontal plane, and both the second main air inlet 7 and the second secondary air inlet 8 are interconnected with the mixing chamber 4. The lower end of the base plate 5 is fixedly connected to the first main wedge block 10, and the lower end of the second side sealing plate 6 is fixedly connected to the first mating wedge block 9 for mating with the first main wedge block 10. Similarly, the first side sealing plate 3 can fix the second side sealing plate 6 to the other side of the base plate 5, so that when the first secondary air inlet 2 and the second secondary air inlet 8 are inhaled, they can effectively counteract the air entering through the air inlet, making the gas in the different air inlets inside more uniform. At the same time, the pressure is released through the gap discharge device, and a water curtain is formed.
[0023] The double-slot air knife is composed of a base plate 5, a first side sealing plate 3 and a second side sealing plate 6, which are fixedly connected by bolts, and a mixing bin 4 is arranged on the base plate 5 for mixing gases from different air inlets, and a first air curtain assembly and a second air curtain assembly for generating air curtains are arranged on the first side sealing plate 3 and the second side sealing plate 6 respectively, for the first air curtain assembly, when the gases enter the mixing bin 4 through the first main air inlet 1 and the first auxiliary air inlet 2 respectively, they are mixed inside the mixing bin 4, at this time, the second main wedge block 11 at the lower end of the base plate 5 cooperates with the second matching wedge block 12 on the first side sealing plate 3 to form a slot with a predetermined interval, when the mixed gases from different air inlets are discharged through the slot, a water curtain is formed, and due to the cooperation of the wedge blocks, the water curtain forms a certain angle when it is sprayed out, that is, 45°, which helps to peel off the water film, and similarly, the working process of the second air curtain assembly is similar to that of the first air curtain assembly, the gases enter the mixing bin 4 through the second main air inlet 7 and the second auxiliary air inlet 8 respectively for mixing, then the mixed gases from different air inlets are discharged through the slot formed between the first main wedge block 10 at the lower end of the base plate 5 and the first matching wedge block 9 on the second side sealing plate 6, forming another water curtain, and the spray angle of the water curtain is 60°, which helps to improve the gas discharge.
[0024] The integrated double-slot structure eliminates the resonance superposition of the traditional double air knife, the mixing bin is arranged inside the base plate, which can generate a negative pressure effect, effectively reducing vibration; the front slot 45° wedge-shaped knife peels off the water film, and the rear slot 60° wedge-shaped knife discharges the gas, the air duct runs more smoothly at high speed, and there is no internal collision condition; the volume is smaller than that of the traditional double air knife, the gas consumption is reduced, and the gases from different air inlets are mixed inside the mixing bin, which can effectively make the sprayed air curtain more uniform.
[0025] The present specification is described according to the embodiments, but each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments which can be understood by the person skilled in the art.
Claims
1. A double-slot air-knife comprising a base plate (5), characterized in that, One end of the base plate (5) is fixedly connected with the first side sealing plate (3) through bolts, the other end of the base plate (5) is fixedly connected with the second side sealing plate (6) through bolts, and the first side sealing plate (3) and the base plate (5) are provided with a first air curtain assembly for generating a wind knife, and the second side sealing plate (6) and the base plate (5) are provided with a second air curtain assembly for generating another angle wind knife.
2. A dual slot air knife according to claim 1, wherein, The first air curtain assembly comprises a first main air inlet hole (1), a first auxiliary air inlet hole (2), a mixing bin (4), a second main wedge (11) and a second matching wedge (12), the mixing bin (4) is opened on the base plate (5), the first main air inlet hole (1) and the first auxiliary air inlet hole (2) are opened on the first side sealing plate (3), the first main air inlet hole (1) and the first auxiliary air inlet hole (2) are located on the same horizontal plane, and the first main air inlet hole (1) and the first auxiliary air inlet hole (2) are in communication with the mixing bin (4).
3. A dual slot air knife according to claim 2, wherein, The lower end of the base plate (5) is fixedly connected with the second main wedge (11) on one side, and the first side sealing plate (3) is fixedly connected with the second matching wedge (12) for matching the second main wedge (11).
4. A dual slot air knife according to claim 3, wherein, The second air curtain assembly comprises a second main air inlet hole (7), a second auxiliary air inlet hole (8), a first matching wedge (9) and a first main wedge (10), the second main air inlet hole (7) and the second auxiliary air inlet hole (8) are opened on the second side sealing plate (6), the second main air inlet hole (7) and the second auxiliary air inlet hole (8) are located on the same horizontal plane, and the second main air inlet hole (7) and the second auxiliary air inlet hole (8) are in communication with the mixing bin (4).
5. A dual slot air knife according to claim 4, wherein, The lower end of the base plate (5) is fixedly connected with the first main wedge (10), and the lower end of the second side sealing plate (6) is fixedly connected with the first matching wedge (9) for matching the first main wedge (10).